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Ericsson Mobile Phone

1. Parameter Philip Singa Spain UK Kuwait pines pore ESN Electrical Serial No Security code 0000 0000 0000 0000 0000 Roam type 0 0 0 0 0 Subscription with charge rate off off off off off Number of channels 1320 1320 1320 1320 1320 1st dedicated control chan 0023 0023 0023 0023 0023 nel in System A 1st dedicated control chan 0323 0323 0323 0323 0323 nel in System B Total no of dedicated control 0021 0021 0021 0021 0021 channels in System A Total no of dedicated control 0021 0021 0021 0021 0021 channels in System B No of emergency numbers 2 2 0 2 2 Emergency number 1 110 995 999 999 Emergency number 2 119 112 112 112 Emergency number 3 Enquiry number 5319828 908 192 192 Country international prefix 00 00 07 00 00 NAM International Mobile Station 460 0 525 7 2148 2340 2340 Identity Number IMSI 123456 123456 123456 123456 123456 Subscriber number 0836 7 908 0836 0836 123456 123456 123456 123456 123456 Pref Sys A B B A A Home system identity 02051 20480 23552 02051 02051 number AID Ist paging channel 0023 0323 0323 0023 0023 Roam off off off off off Access overload class 05 05 05 05 05 Response to local control off off off off off message enabled Sending of extended MS off off off off off number 39 Test Service Programs 40 Quick NAM Programming The num
2. CT 17 Test Service Programs 18 Software Installation The ETACS Service Program consists of four files SPEPI361 EXE TYPE1361 CFG TYPE1361 EDT e TYPE1361 MNU The program can be run directly from a diskette but it is adviseable to have it run from the hard disk Simply install the software on the hard disk by copying the contents of the diskette to a suitable directory on the hard disk The copying of files mentioned above describes how to install the ETACS Service Program from a standard floppy disk but the program may become distributed in other media formats CAUTION Use a fully charged phone battery since the interface is powered by the phone Using an even slightly discharged battery may result in misreadings even if the Low Battery warning has not yet appeared Starting the Program Turn the phone On Start the program by double clicking the file SPEP1361 EXE in the File Manager Explorer and the following picture appears on the screen File Edit Short Numbers Options SELECT COM PORT 1 Press digit 1 to use COMI 2 Press digit 2 to use COM2 Esc Press ESC to continue Select the serial port COMI or COM where the programming interface is con nected as instructed on the screen Test Service Programs The Programming Cycle Det
3. Cradle Weight 105g 3 7 oz Height 95mm 3 7 in Depth incl cradle attachment 54mm 2 1 in Width 60mm 2 4 in 31 Accessories 32 Connectors and Signals Holder System Connector 1 12 pm EE NNI Note For pin assignments refer to column H pin of System Connector J1 table on next page HandsFree Unit J4 J7 J5 J6 J1 J2 Accessories System Connector J1 12 2 11 1 H pin Signal Specification 10 DGND Digital ground amp DC return 2 12 DCIO DC voltage supply to phone power 3 AGND Audio signal ground amp reference 4 2 ATMS Audio to mobile station 5 HOOKSNS Hook sense connected to cradle not phone 6 1 AFMS Audio from mobile station 7 6 MUTE Music Mute 8 3 EXTAUD External analog audio accessory sense 9 5 PORTHF Portable handsfree sense 10 8 VDD Logic reference status ON 11 9 DFMS Data from mobile station 12 11 DTMS Data to mobile station Jl pin HandsFree Unit System Connector JI pin H pin Holder System Connector pin Power Connector J2 3 1 1 GND i 2 12VDC 3 MUTEINV 4 2 4 n c 33 Accessories Microphone Connector J4 1 Stick On microphone Goose Neck microphone I
4. Parameter Austria China Hong Ireland Italy Malay Kong sia ESN Electrical Serial No Security code 0000 0000 0000 0000 0000 0000 Roam type 0 0 0 0 0 0 Subscription with charge rate off off off off off off Number of channels 1320 1320 1320 1320 1320 1320 1st dedicated control chan 0023 0023 1996 0023 0023 0023 nel in System A Ist dedicated control chan 0323 0323 0323 0323 0323 0323 nel in System B Total no of dedicated control 0021 0021 0021 0021 0021 0021 channels in System A Total no of dedicated control 0021 0021 0021 0021 0021 0021 channels in System B No of emergency numbers 3 2 3 2 3 2 Emergency number 1 122 110 112 999 116 999 Emergency number 2 133 119 110 112 113 112 Emergency number 3 144 119 112 Enquiry number 11611 108 192 103 Country international prefix 00 00 00 00 00 00 NAM International Mobile Station 2320 460 0 454 2 2340 2222 5020 Identity Number IMSI 123456 123456 123456 123456 123456 123456 Subscriber number 0000 0836 90 0836 0337 0000 123456 123456 123456 123456 123456 123456 Pref Sys A A A A A A Home system identity 26625 02051 11083 02051 24641 18435 number AID Ist paging channel 0023 0023 1996 0023 0023 0023 Roam off off off off off off Access overload class 05 05 05 05 05 05 Response to local control off off off off off off message enabled Sending of extended MS off off off off off off number 38 Test Service Programs
5. 3 8V Regulator Flash GUSTAV 3 3V GUSTAV 3 8V Buzzer Driver EEPROM LED Driver Buzzer amp Indicator Light Regulator ANTON MIA Accessories MALIN RX Parts BERTINDY 2nd LO Figure 9 Power Distribution Regulators The phone is powered by three regulators as follows VDIG powers the digital audio user interface circuitry VMALIN powers MALIN TX and buffer VRAD powers the remaining radio circuitry 20 BERTINDY Power Amp DOUT1 Low Level S BERTINDY Coupler vco LNA Mixer BERTINDY DOUTO Els IF Chip T Technical Description The regulators have got an enable input which is used to power the phone on off The minimum voltage for turning the regulators on is 2 0V and the maximum for turning them off is 0 18V Reset The digital voltage VDIG is monitored by a low voltage detector in ANTON While the phone is operating and if VDIG drops below 3 35V typical ANTON s LVN open drain output will set GUSTAV s reset input MRN low causing the processor to reset Upon power up an RC filter holds GUSTAV s reset input low for the required 20 ms delay On Off Control The phone may be powered on by either pressing the ON OFF END key or by applying 7 0V 10 0V at DCIO When the ON OFF END key is pressed for at least 200 ms this key
6. DC n c 402 0036 BV 95 x 38x 27 mm 3 7 x 1 5 x 1 1 in 24 x 11x 11 mm 0 9 x 0 4 x 0 4 in 100 240 Vac 10 150mA typical 50 60 Hz 5 7 6 Vpc 600mA 11 Accessories 12 Accessories Vehicle Power Charger Introduction The Vehicle Power Charger is a step down DC DC converter to be used as charger and power supply for the phone when plugged into the 12V or 24V negative ground cigarette lighter outlet The Vehicle Power Charger is an integrated unit consisting of three parts cigarette lighter adaptor coiled cord power plug Main Features The Vehicle Power Charger can be used as power source in two different ways for e the 7X8 family phones the DeskTop Charger MC7000 13 Accessories Indicators A green LED located next to the coiled cord outlet of the cigarette lighter adaptor is turned on whenever the appropriate vehicle voltage is available LED Output Characteristics The output voltage and current of the Vehicle Power and Charger should stay within the values indicated as white area in the picture below mA 600 900 Output power characteristics within range e Output power characteristics out of range 14 Connectors Accessories Cigarette Lighter Adaptor V Ground Spring Power Plug x LE Specifications Type No Dimensions Cigarett
7. Key Function MENU Saves value and steps forward Saves value and steps forward L Saves value and steps backwards MEM Moves to beginning of present menu 5 Moves to beginning of NAM submenu when NAM menu Moves to beginning of Long NAM Programming menu CLR Returns to previous value 0 9 Entry of numbers and toggling of values End Pwr No Exit from Long NAM Programming mode Test Service Programs NOTE Due to the limited amount of display characters some parameters will be displayed as two parts an intro text shown for 1 second followed by the numeric data indicated as two text rows in the Display column below Menu Type Display Menu Action ESN Electrical Serial No ESN 123 1 3 most significant digits shown 1 sec 12345678 Remaining digits shown thereafter Security code CODE 0000 2 Code shown set in menu mode Roam type ROAMTYPE 0 4 Press 0 9 to switch ROAMTYPEI Subscription with charge rate CHARGE OFF 5 Press 0 9 to switch CHARGE ON Number of channels CHAN 1320 6 Press 0 9 to switch CHAN 600 1st dedicated control chan FCCHA 0023 7 Enter number 0000 0600 1329 2047 nel in System A incl leading zeroes 1st dedicated control chan FCCHB 0323 8 Enter number 0000 0600 1329 2047 nel in System B incl leading zeroes Total no of dedicated control BANDA 0021 9 Enter 4 digit number incl
8. Contents The Mobile Telephone Network 5 Base Station and Cell 6 Radio Channels 6 Radio Coverage 7 Transmission Control and Communication 8 Quality Control 9 Data Transmission 10 Frequency Tables Table 1 Channels 1329 2047 12 Channels 1329 1478 12 Channels 1479 1628 13 Channels 1629 1778 14 Channels 1779 1928 15 Channels 1929 2047 16 Table 2 Channels 0 600 17 Channels 0 149 17 Channels 150 299 18 Channels 300 449 19 Channels 450 600 20 System Introduction System Introduction The Mobile Telephone Network PSTN MTX Mobile Telephone Exchange MTS Mobile Telephone Subsystem PSTN Public Switching Telephone Network AXE 10 Telephone Exchange BS Base Station MT Mobile Telephone A cellular mobile telephone system CMS controlled by one single exchange is illustrated in fig 1 The basic units of such a system are e the mobile services switching centre MSC e the base stations BS e the mobile telephones MT The MSC is the interface between the radio system and the public switching tele phone network PSTN Calls to and from the mobile subscriber are switched by the MSC which also provides all signalling functions needed to establish the calls In order to obtain radio coverage of a given geographical area a certain number of base stations is required The number of base stations may range from one up to a hundred or more Such a geographical ar
9. RF Power Output Output Impedance Spurious Emission TX Receiver RF Level EF738 1030601 BV ETACS TX 872 905 MHz RX 917 950 MHz 25kHz 1320 FM 2 5ppm 45MHz One 10 chrs alphanumeric line One status indicator line icons 17 front keys 2 side keys quarter wave No 4 8V lt 590mA at level 2 full power 45mA standby lt 30mA standby with DRX z 80 min conversation 22 hours standby 106 x 50 x 24 mm 4 17 x 1 97 x 0 94 in 70g 2 5 2 excl battery 137g 4 80z incl standard battery 10 to 55 C 14 to 131 F operating 40 to 70 C 40 to 185 F storage 0 95 relative humidity 26 5dBm level 2 500 lt 26dBm below 1GHz lt 30dBm above 1GHz gt 113dBm 20dB SINAB Test Service Programs Ericsson Mobile Phone EF738 Test Service Programs Test Service Programs Contents Test Equipment 5 Recommended Instruments 5 Other Equipment 6 Test Propram 47 How to Use 7 Initiating the Test Program 7 Return to TEST INPUT 7 Exit 7 Individual Test Options 8 Overview of the Test Program 15 ETACS Service Program 17 Hardware Requirements 17 Software Installation 18 Starting the Program 18 The Programming Cycle 19 Using the Menus 19 How to Select 19 The Functions 20 File 20 Edit 21 Short Numbers 31 Options 31 Re Programming a Telephone 32 Contents of Saved Short Number Files 32 Key
10. is a comment and will not cause any programming of the telephone Test Service Programs Keypad NAM Programming The Keypad NAM Number Assignment Modules Programming includes not only the NAM parameters but also some functionally related parameters as well as coun try dependent parameters Two different Keypad NAM Programming modes are available Long NAM non user selectable by default Quick NAM always selectable A list of the available programmable parameters programming instructions and country related default values for Long resp Quick NAM follows 33 Test Service Programs 34 Long NAM Programming Programmable Parameters Electrical Serial Number ESN The ESN which is a unique binary number that identifies the MS to the cellular sys tem is set by the factory and can not be modified Security Code This code gives the user access to protected memory locations resetting of menus and setting of call restrictions Roam Type The roaming indicator can be set in three different modes off flashing steady on Subscription with Charge Rate This parameter determines whether AirTime CallCharge is selectable by the user Number of Channels Defines the allowed number of channels according to the frequency band First Dedicated Control Channel in System A This control channel number can be programmed in service mode for internal tests First Dedicated Control Channel in System B This control channel
11. 889 6875 934 6875 1937 887 2125 932 2125 1987 888 4625 933 4625 2037 889 7125 934 7125 1938 887 2375 932 2375 1988 8884875 933 4875 2038 889 7375 934 7375 1939 887 2625 932 2625 1989 888 5125 933 5125 2039 889 7625 934 7625 1940 85872875 932 2875 1990 888 5375 933 5375 2040 889 7875 934 7875 1941 887 3125 932 3125 1991 888 5625 933 5625 2041 889 8125 934 8125 1942 887 3375 932 3375 1992 888 5875 933 5875 2042 889 8375 934 8375 1943 887 3625 932 3625 1993 888 6125 933 6125 2043 889 8625 934 8625 1944 887 3875 932 3875 1994 8886375 933 6375 2044 889 8875 934 8875 1945 8874125 932 4125 1995 888 6625 933 6625 2045 889 9125 934 9125 1946 887 4375 932 4375 1996 888 6875 933 6875 2046 889 9375 934 9375 1947 887 4625 932 4625 1997 888 7125 933 7125 2047 889 9625 934 9625 1948 887 4875 932 4875 1998 888 7375 933 7375 1949 887 5125 932 5125 1999 888 7625 933 7625 1950 887 5375 932 5375 2000 888 7875 933 7875 1951 887 5625 932 5625 2001 888 8125 933 8125 1952 887 5875 932 5875 2002 888 8375 933 8375 1953 887 6125 932 6125 2003 888 8625 933 8625 1954 887 6375 932 6375 2004 888 8875 933 8875 1955 887 6625 932 6625 2005 888 9125 933 9125 1956 887 6875 932 6875 2006 888 9375 933 9375 1957 887 7125 932 7125 2007 888 9625 933 9625 1958 8877375 932 7375 2008 888 9875 933 9875 1959 887 7625 932 7625 2009 889 0125 934 0125 1960 85877875 932 7875 2010 889 0375 934 0375 1961 887 8125 932 8125 2011 889 0625 934 0625 1962 887 837
12. 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 System Introduction Tx 892 4875 892 5125 892 5375 892 5625 892 5875 892 6125 892 6375 892 6625 892 6875 892 7125 892 7375 892 7625 892 7875 892 8125 892 8375 892 8625 892 8875 892 9125 892 9375 892 9625 892 9875 893 0125 893 0375 893 0625 893 0875 893 1125 893 1375 893 1625 893 1875 893 2125 893 2375 893 2625 893 2875 893 3125 893 3375 893 3625 893 3875 893 4125 893 4375 893 4625 893 4875 893 5125 893 5375 893 5625 893 5875 893 6125 893 6375 893 6625 893 6875 893 7125 Rx 937 4875 937 5125 937 5375 937 5625 937 5875 937 6125 937 6375 937 6625 937 6875 937 7125 937 7375 937 7625 937 7875 937 8125 937 8375 937 8625 937 8875 937 9125 937 9375 937 9625 937 9875 938 0125 938 0375 938 0625 938 0875 938 1125 938 1375 938 1625 938 1875 938 2125 938 2375 938 2625 938 2875 938 3125 938 3375 938 3625 938 3875 938 4125 938 4375 938 4625 938 4875 938 5125 938 5375 938 5625 938 5875 938 6125 938 6375 938 6625 938 6875 938 7125 17 System Introduction Channels 150 299 Ch Tx Rx Ch Tx Rx Ch Tx Rx 150 893 7375 938 7375 200 894 9875 939 9875 250 896 2375 941 2375 151 893 7625 938 7625 201 895 0125 940 0125 251 896 2625 941 2
13. 948 8875 457 901 4125 946 4125 507 902 6625 947 6625 557 903 9125 948 9125 458 901 4375 946 4375 508 902 6875 947 6875 558 903 9375 948 9375 459 901 4625 946 4625 509 902 7125 947 7125 559 903 9625 948 9625 460 901 4875 946 4875 510 902 7375 947 7315 560 903 9875 948 9875 461 901 5125 946 5125 511 902 7625 947 7625 561 904 0125 949 0125 462 901 5375 946 5375 512 902 7875 947 7875 562 904 0375 949 0375 463 901 5625 946 5625 513 902 8125 947 8125 563 904 0625 949 0625 464 901 5875 946 5875 514 902 8375 947 8375 564 904 0875 949 0875 465 901 6125 946 6125 515 902 8625 947 8625 565 904 1125 949 1125 466 901 6375 946 6375 516 902 8875 947 8875 566 904 1375 949 1375 467 901 6625 946 6625 517 902 9125 947 9125 567 904 1625 949 1625 468 901 6875 946 6875 518 902 9375 947 9375 568 904 1875 949 1875 469 901 7125 946 7125 519 902 9625 947 9625 569 904 2125 949 2125 470 901 7375 946 7375 520 902 9875 947 9875 570 904 2375 949 2375 471 901 7625 946 7625 521 903 0125 948 0125 571 904 2625 949 2625 472 901 7875 946 7875 522 903 0375 948 0375 572 904 2875 949 2875 473 901 8125 946 8125 523 903 0625 948 0625 573 904 3125 949 3125 474 901 8375 946 8375 524 903 0875 948 0875 574 904 3375 949 3375 475 901 8625 946 8625 525 903 1125 948 1125 575 904 3625 949 3625 476 901 8875 946 8875 526 903 1375 948 1375 576 904 3875 949 3875 477 901 9125 946 9125 527 903 1625 948 1625 577 904 4125 949 4125 478 901 9375 946 9375 528 903 1875 948 1875 578 904 4375 949
14. Detect RXCD such that signals below this level are ignored This value plus a fixed offset also determines the minimum signal threshold for the AFC When the received signal is below this threshold the AFC pro vides TCXO compensation based on a default temperature com pensation table The values for level 1 and 5 are used to determine the RSSI graph to display The values for level 2 3 and 4 are interpolated from these two reference levels M displays the next RSSI level number and its current value reads an averaged RSSI value and stores it Adjustment of the receiver audio output M enables calibration and echoes the initial value increases decreases the value by 1 new value is echoed M S stores the current value Factory and level 5 repair only Factory and level 5 repair only Adjustment of the audio deviation enables calibration and echoes the initial value increases decreases the value by 1 new value is echoed M S stores the current value Sets the AFC operating mode and displays AFC information 0 only temperatue compensation temp age compensation temp age freq compensation smoothed default temp age freq compensation no smooth no compensation Any other code entered in handset mode will display ABCCDDEEFF where AFC operating mode only temperatue compensation temp age compensation temp age freq compensation smoothed default temp age freq comp
15. default 1 microphone on earphone on loudspeaker off 2 microphone off earphone off loudspeaker on Controls the SAT tone switch and TX SAT deviation 0 generate 5970 Hz SAT generate 6000 Hz SAT generate 6030 Hz SAT no SAT generated SAT tone switch setting ON SAT tone switch setting OFF M enables calibration and echoes the initial value increases decreases the value by 1 new value is echoed 8 stores the value Q Test Service Programs 23 MANCH OUT Controls the wideband data and deviation 24 MANCH IN 25 VOLUME 26 DTMF 27 TX SOURCE 28 EARPIECE 29 COMP To transmit these data the transmitter must be switched on 0 off no data output 1 8kHz output ones 2 8kHz output zeros 3 hardcoded idle frame 0101010101 M enables calibration and echoes the initial value increases decreases the value by 1 new value is echoed M S stores the value Displays the latest received data from the base station The value is displayed each time a key is pressed Sets the earpiece and loudspeaker volume Possible values 0 7 default 3 DTMF tones consist of a lower frequency in combination with a higher frequency The test enables listening to either or both as follows 0 low frequency 1 high frequency 2 both frequencies scroll forwards backwards to next previous DTMF tone M enables calibration and echoes the initial value increase decrease the value by 1 new v
16. leading channels in System A zeroes Total no of dedicated control BANDB 0021 10 Enter 4 digit number incl leading channels in System B zeroes No of emergency numbers NO EMERG 1 11 Enter digit 0 3 Emergency number 1 EMERGENCY 12 Enter max 10 digits press MENU or 911 to go to next emerg no if any Enquiry number ENQUIRY 13 Enter a number with max 10 digits 912 Country international prefix INTER PREF 14 Enter a number with max 4 digits 07 NAM NAM 1 15 Press 0 9 to switch NAM International Mobile Station IMSI 1 16 Enter a 10 digit number Identity Number IMSI 1111110111 Subscriber number SUBNUMBERI 17 Enter a max 10 digit number 1111110111 Pref Sys SYSTEMI A 18 Press 0 9 to switch SYSTEMI Home system identity AIDI 00000 19 Enter a number 00000 32767 incl number AID leading zeroes 1st paging channel 0023 20 Enter a number 000 600 1329 2047 incl leading zeroes Roam ROAMI ON 21 Press 0 9 to switch ROAMI OFF Access overload class ACCOLCI 01 22 Enter two digits 00 15 Default 0 second last IMSI digit Response to local control LOCAL 1 ON 23 Press 0 9 to switch LOCALI OFF message enabled Sending of extended MS EXTI ON 24 Press 0 9 to switch EXT1 OFF number 37 Test Service Programs Default Values
17. 10dB 2 0dB 3 3 AGND Signal ground Microphone connector J4 is female Picture shows corresponding male Music Mute Connector J5 LSP Loudspeaker common DGND Digital ground amp DC return LSP Loudspeaker signal MUTE Music mute al BJ Ww DC120UT 12VDC output Music Mute connector J5 is male Picture shows corresponding female Data Communication Connector J6 1 MUTEINV Music Mute inverted 1 22275 2 VDD Logic reference status ON 3 DCI2OUT 12VDC output 4 AFMS RX Audio from mobile station i 5 D V Data voice signal pas 6 ATMS TX Audio to mobile station 7 Portable handsfree sense 8 DTMS Data to mobile station 9 DFMS Data from mobile station 10 DGND Digital ground amp DC return Speaker Connector J7 1 LSP Loudspeaker signal LSP Loudspeaker common S n c Speaker connector J7 is female Picture shows corresponding male 34 Accessories Vehicle HandsFree Solution HF7600 Introduction The Vehicle Handsfree Solution HF7600 is specially designed for the Ericsson 7X8 family telephones and includes apart from the handsfree facilities also a power sup ply and battery charger for the phon
18. 1625 931 1625 1796 883 6875 928 6875 1846 8849375 929 9375 1896 886 1875 931 1875 1797 883 7125 928 7125 1847 884 9625 929 9625 1897 886 2125 931 2125 1798 883 7375 928 7375 1848 8849875 929 9875 1898 886 2375 931 2375 1799 883 7625 928 7625 1849 885 0125 930 0125 1899 886 2625 931 2625 1800 883 7875 928 7875 1850 885 0375 930 0375 1900 886 2875 931 2875 1801 883 8125 928 8125 1851 885 0625 930 0625 1901 886 3125 931 3125 1802 883 8375 928 8375 1852 885 0875 930 0875 1902 886 3375 931 3375 1803 883 8625 928 8625 1853 885 1125 930 1125 1903 886 3625 931 3625 1804 883 8875 928 8875 1854 885 1375 930 1375 1904 886 3875 931 3875 1805 883 9125 928 9125 1855 885 1625 930 1625 1905 886 4125 931 4125 1806 883 9375 928 9375 1856 885 1875 930 1875 1906 886 4375 931 4375 1807 883 9625 928 9625 1857 8852125 930 2125 1907 886 4625 931 4625 1808 883 9875 928 9875 1858 8852375 930 2375 1908 886 4875 931 4875 1809 884 0125 929 0125 1859 885 2625 930 2625 1909 886 5125 931 5125 1810 884 0375 929 0375 1860 885 2875 930 2875 1910 886 5375 931 5375 1811 884 0625 929 0625 1861 885 3125 930 3125 1911 886 5625 931 5625 1812 884 0875 929 0875 1862 885 3375 930 3375 1912 886 5875 931 5875 1813 884 1125 929 1125 1863 885 3625 930 3625 1913 886 6125 931 6125 1814 884 1375 929 1375 1864 885 3875 930 3875 1914 886 6375 931 6375 1815 884 1625 929 1625 1865 885 4125 930 4125 1915 886 6625 931 6625 1816 884 1875 929 1875 1866 885 4375 930 4375 1916 8
19. 1655 880 1625 925 1625 1705 881 4125 926 4125 1755 882 6625 927 6625 1656 880 1875 925 1875 1706 881 4375 926 4375 1756 882 6875 927 6875 1657 8802125 925 2125 1707 8814625 926 4625 1757 882 7125 927 7125 1658 880 2375 925 2375 1708 8814875 926 4875 1758 882 7375 927 1315 1659 880 2625 925 2625 1709 881 5125 926 5125 1759 882 7625 927 7625 1660 880 2875 925 2875 1710 881 5375 926 5375 1760 882 7875 927 7875 1661 880 3125 925 3125 1711 881 5625 926 5625 1761 882 8125 927 8125 1662 880 3375 925 3375 1712 881 5875 926 5875 1762 882 8375 927 8375 1663 880 3625 925 3625 1713 881 6125 926 6125 1763 882 8625 927 8625 1664 880 3875 925 3875 1714 881 6375 926 6375 1764 882 8875 927 8875 1665 880 4125 925 4125 1715 881 6625 926 6625 1765 882 9125 927 9125 1666 8804375 925 4375 1716 881 6875 926 6875 1766 882 9375 927 9375 1667 880 4625 925 4625 1717 881 7125 926 7125 1767 882 9625 927 9625 1668 8804875 925 4875 1718 881 7375 926 7375 1768 882 9875 927 9875 1669 880 5125 925 5125 1719 881 7625 926 7625 1769 883 0125 928 0125 1670 880 5375 925 5375 1720 881 7875 926 7875 1770 883 0375 928 0375 1671 880 5625 925 5625 1721 881 8125 926 8125 1771 883 0625 928 0625 1672 880 5875 925 5875 1722 881 8375 926 8375 1772 883 0875 928 0875 1673 880 6125 925 6125 1723 881 8625 926 8625 1773 883 1125 928 1125 1674 880 6375 925 6375 1724 881 8875 926 8875 1774 883 1375 928 1375 1675 880 6625 925 6625 1725 881 9125 926 9125 1775 883 1625 928 16
20. 5625 273 896 8125 941 8125 174 894 3375 939 3375 224 895 5875 940 5875 274 896 8375 941 8375 175 894 3625 939 3625 225 895 6125 940 6125 275 896 8625 941 8625 176 894 3875 939 3875 226 895 6375 940 6375 276 896 8875 941 8875 177 894 4125 939 4125 227 895 6625 940 6625 277 896 9125 941 9125 178 894 4375 939 4375 228 805 6875 940 6875 278 896 0375 941 9375 179 894 4625 939 4625 229 895 7125 940 7125 279 896 9625 941 9625 180 894 4875 939 4875 230 805 7375 940 7375 280 896 9875 941 9875 181 894 5125 939 5125 2331 805 7625 940 7625 281 897 0125 942 0125 182 894 5375 930 5375 232 805 7875 940 7875 282 897 0375 942 0375 183 894 5625 939 5625 233 805 8125 940 8125 283 897 0625 942 0625 184 894 5875 939 5875 234 895 8375 940 8375 284 897 0875 942 0875 185 894 6125 939 6125 235 895 8625 940 8625 285 897 1125 942 1125 186 894 6375 939 6375 236 895 8875 940 8875 286 897 1375 942 1375 187 894 6625 939 6625 237 895 9125 940 9125 287 897 1625 942 1625 188 894 6875 939 6875 238 895 9375 940 9375 288 897 1875 942 1875 189 894 7125 939 7125 239 895 9625 940 9625 289 897 2125 942 2125 190 894 7375 939 7375 240 805 9875 940 9875 290 897 2375 942 2375 191 894 7625 939 7625 241 896 0125 941 0125 291 897 2625 942 2625 192 894 7875 939 7875 242 896 0375 941 0375 292 897 2875 942 2875 193 894 8125 939 8125 243 896 0625 941 0625 293 897 3125 942 3125 194 894 8375 939 8375 244 896 0875 941 0875 294 897
21. 7 6 MUTE Music Mute 8 3 EXTAUD External analog audio accessory sense 9 5 PORTHF Portable handsfree sense 10 8 VDD Logic reference status ON 11 9 DFMS Data from mobile station 12 11 DTMS Data to mobile station J1 pin HandsFree Unit System Connector JI pin H pin Holder System Connector pin Power Connector J2 3 1 1 GND I 2 12VDC 3 MUTEINV 4 n n 2 4 n c 41 Accessories Microphone Connector J4 1 Stick On microphone Goose Neck microphone I 10dB 2 0dB 3 3 AGND Signal ground Microphone connector J4 is female Picture shows corresponding male Music Mute Connector J5 LSP Loudspeaker common DGND Digital ground amp DC return LSP Loudspeaker signal MUTE Music mute al BJ Ww DC120UT 12VDC output Music Mute connector J5 is male Picture shows corresponding female Data Communication Connector J6 1 MUTEINV Music Mute inverted 1 22275 2 VDD Logic reference status ON 3 DCI2OUT 12VDC output 4 AFMS RX Audio from mobile station i 5 D V Data voice signal pas 6 ATMS TX Audio to mobile station 7 Portable
22. 927 0875 1633 879 6125 924 6125 1683 880 8625 925 8625 1733 882 1125 927 1125 1634 879 6375 924 6375 1684 8808875 925 8875 1734 882 1375 927 1375 1635 879 6625 924 6625 1685 880 9125 925 9125 1735 882 1625 927 1625 1636 879 6875 924 6875 1686 880 9375 925 9375 1736 882 1875 927 1875 1637 879 7125 924 7125 1687 880 9625 925 9625 1737 882 2125 927 2125 1638 879 7375 924 7375 1688 880 9875 925 9875 1738 8822375 927 2375 1639 879 7625 924 7625 1689 881 0125 926 0125 1739 882 2625 927 2625 1640 879 7875 924 7875 1690 881 0375 926 0375 1740 8822875 927 2875 1641 879 8125 924 8125 1691 881 0625 926 0625 1741 882 3125 927 3125 1642 879 8375 924 8375 1692 881 0875 926 0875 1742 882 3375 927 3375 1643 879 8625 924 8625 1693 881 1125 926 1125 1744 882 3875 927 3875 1645 879 9125 924 9125 1695 881 1625 926 1625 1745 8824125 927 4125 1646 879 9375 924 9375 1696 881 1875 926 1875 1746 882 4375 927 4375 1647 879 9625 924 9625 1697 881 2125 926 2125 1747 882 4625 927 4625 1648 879 9875 924 9875 1698 98812375 926 2375 1748 8824875 927 4875 1649 880 0125 925 0125 1699 98812625 926 2625 1749 882 5125 927 5125 1650 880 0375 925 0375 1700 881 2875 926 2875 1750 882 5375 927 5375 1651 880 0625 925 0625 1701 881 3125 926 3125 1751 882 5625 927 5625 1652 880 0875 925 0875 1702 881 3375 926 3375 1752 882 5875 927 5875 1653 880 1125 925 1125 1703 881 3625 926 3625 1753 882 6125 927 6125 1654 8801375 925 1375 1704 881 3875 926 3875 1754 882 6375 927 6375
23. 935 2125 935 2375 935 2625 935 2875 935 3125 935 3375 935 3625 935 3875 935 4125 935 4375 935 4625 935 4875 935 5125 935 5375 935 5625 935 5875 935 6125 935 6375 935 6625 935 6875 935 7125 935 7375 935 7625 935 7875 935 8125 935 8375 935 8625 935 8875 935 9125 935 9375 935 9625 935 9875 936 0125 936 0375 936 0625 936 0875 936 1125 936 1375 936 1625 936 1875 936 2125 891 2375 891 2625 891 2875 891 3125 891 3375 891 3625 891 3875 891 4125 891 4375 891 4625 891 4875 891 5125 891 5375 891 5625 891 5875 891 6125 891 6375 891 6625 891 6875 891 7125 891 7375 891 7625 891 7875 891 8125 891 8375 891 8625 891 8875 891 9125 891 9375 891 9625 891 9875 892 0125 892 0375 892 0625 892 0875 892 1125 892 1375 892 1625 892 1875 892 2125 892 2375 892 2625 892 2875 892 3125 892 3375 892 3625 892 3875 892 4125 892 4375 892 4625 Rx 936 2375 936 2625 936 2875 936 3125 936 3375 936 3625 936 3875 936 4125 936 4375 936 4625 936 4875 936 5125 936 5375 936 5625 936 5875 936 6125 936 6375 936 6625 936 6875 936 7125 936 7375 936 7625 936 7875 936 8125 936 8375 936 8625 936 8875 936 9125 936 9375 936 9625 936 9875 937 0125 937 0375 937 0625 937 0875 937 1125 937 1375 937 1625 937 1875 937 2125 937 2375 937 2625 937 2875 937 3125 937 3375 937 3625 937 3875 937 4125 937 4375 937 4625 Ch 100 101 102 103 104 105 106 107
24. Access Overload Class normally the last digit of the Mobile Station Id No followed by the Home Traffic Area Identification entered as hex code Inter System Roaming Y Inter System Roaming enabled N Inter System Roaming disabled System A System A is the home system in the NAM B System B is the home system in the NAM First Paging Channel First paging channel in the present NAM to be entered in decimal form Country amp Network Code Mobile Country Code 3 digits followed by Mobile Network Code 1 digit for the present NAM Send External Mobile Station Number Y z Phone must send the extended address word when accessing the system N Extended address word not required when accessing the system Response to Local Message Y Phone must respond to local control messages sent on the FOCC N Response not required to local control messages sent on the FOCC Short Numbers Short Numbers Save To Disk Load From Disk Clear Mobile Save To Disk Reads the short numbers from the telephone and transfers them to a file see below Load From Disk Reads short numbers from a file and stores burns them in the phone Clear Mobile Clear all short numbers in the phone Options COM Port Possible to change the COM port whithout leaving the program for example when having programming interfaces connected to both COM ports 31 Test Service Programs 32 Re Programming a Telephone When makin
25. C to 35 C 41 F to 95 F 22 Accessories Connectors and Signals System Bus Connector LL it Pin Signal Specification 1 AFMS Audio from mobile station 2 ATMS Audio to mobile station 3 EXTAUD External analog audio accessory sense 4 AGND Audio signal ground refernce 5 PORTHF Portable handsfree 6 MUTE Music mute 7 VPPFLASH Flash memory voltage and service voltage 8 VDD Logic reference status On 9 DFMS Data from mobile station 10 DGND Digital ground and DC return 11 DTMS Data to mobile station 12 ACCDCIO DC positive pole for phone battery charging and exter DCIO2 nal accessory powering 1 System Bus Connector 2 Front Slot Connector Front Slot 1 EE Note For pin assignments refer to System Bus Connector above 23 Accessories 24 Rear Slot Negative pole Positive pole Accessories Portable HandsFree Introduction The Portable HandsFree is a light weight unit which allows the user to combine the mobility of a handheld phone with the advantages of being handsfree The following three main components are included e microphone earphone connector The connector is plugged into the system connector of the phone After fitting the earp
26. EM 2 EM 3 doy NNN ENQUIRY Y N INTER PRE Y Y NA Y N IMSI SUBN Yu YOY SYSTE Y N AIDH FPCH ROA X AA Y NN ACCOLC LOCAL EXT NNN Not used set to Y N X aX Yn old NNNNNNIN The table above displays the various programmable parameters for NAM programming center column Quick NAM programming right column By entering a Y the parameter becomes accessible for programming By entering a N the parameter becomes not accessible for programming The default settings for the accessibility of the NAM and Quick NAM parameters are as listed in the table above For more detailed information refer to Keypad NAM Programming which is found further on in this section Test Service Programs 30 COUNTRY DATA The example below shows one out of four country dependent data tables The parameters are identical for all countries but the settings will vary COUNTRY DATA 1 Country Name UA CC Data System A B 0023 21 0323 21 Station Class Mark Enquiry Number No of Emergency No s Emergency no Emergency no 2 Emergency no 3 Prefix Info NAM User Selectabl Subscriber No obile Stat Id No ACCOLC AID Inter 5ystem Roaming System First Paging Channel Country Netw Code Send Ext MS Number Resp to Local Mess WO ZZNOBZUPOKNOWWNWw ZUZNOPugUILOZ Country Name If the Country Name contains less than te
27. Handset Accessories An External Handset will give the user the possibility to switch from handsfree to handheld operation without disconnecting the power source A Data Extension Unit is required for the connection between the External Handset and the Data Commu nication Connector Specifications Handsfree Unit Type No 502 0020 BV Dimensions 135 x 100 x 28 mm 5 3 x 39 x 1 1 in Input Voltage 10 8 to 15 6 VDC Ambient Temperature Operating 25 C to 60 C 13 F to 140 F Ambient Temperature Charging 10 C to 35 C 50 F to 95 F Cradle Weight 105g 3 7 oz Height 95mm 3 7 in Depth incl cradle attachment 54mm 2 1 in Width 60mm 2 4 in 39 Accessories 40 Connectors and Signals Holder System Connector 1 12 Note For pin assignments refer to column of System Connector J1 table on next page HandsFree Unit Li Zm gU E E CO 4 J7 J5 J J1 J2 Accessories System Connector J1 12 2 11 1 H pin Signal Specification 1 10 DGND Digital ground amp DC return 2 12 DCIO DC voltage supply to phone power 3 4 AGND Audio signal ground amp reference 4 ATMS Audio to mobile station 5 HOOKSNS Hook sense connected to cradle not phone 6 1 AFMS Audio from mobile station
28. PCB exchange fault finding and alignment Accessories technical descriptions of available accessories HandsFree Installation installation instructions regarding vehicle handsfree kits Spare Parts section reserved for separately distributed spare parts lists Service Messages section reserved for separately distributed service messages Contents System Introduction 7 Spare Parts 8 Service Messages The Mobile Telephone Network 5 Frequency Tables 11 Technical Description Overview 7 Mechanical Design 11 Man Machine Interface MMI 12 Radio Design 13 Power and Charging Design 20 User Interface 23 Logic Design 24 Audio Design 27 Software Design 33 Technical Specifications 34 Test Service Programs Test Equipment 3 Test Program 7 ETACS Service Programs 17 Keypad NAM Programming 33 Flash Programming 43 Service Instructions System Connector Signals 5 Disassembly 6 Reassembly 7 Exchanging the Circuit Board 9 Fault Finding and Alignment 10 5 Accessories Rapid Charger 7 Travel Charger 9 Vehicle Power Charger 13 DeskTop Charger MC7000 17 Portable HandsFree 25 Vehicle HandsFree Solution HF7300 27 Vehicle HandsFree Solution HF7600 35 6 HandsFree Installation Vehicle HandsFree Solutions HF7300 amp HF7600 5 System Introduction Ericsson Mobile Phone EF738 System Introduction System Introduction
29. Time Menu Y Last Time duration of last call display selection enabled N Last Time display selection disabled Last Charge Menu Y Last Charge no of charge units for last call display selection enabled N Last Charge display selection disabled Total Time Menu Y Total Time since counter reset display selection enabled N Total Time display selection disabled Test Service Programs Total Charge Menu Y Total Charge since counter reset display selection enabled N Total Charge display selection disabled Call Count Menu Y Call Count no of in out going calls since reset display selection enabled N Call Count display selection disabled 25 Test Service Programs 26 SYSTEM amp SERVICES SYSTEM amp SERVICES HE PP 00 HH lt Er Oo 5 pi FACS level ine Identific Long NAM Prog Entry Test Program Entry Country Menu Entr Rescan Time minutes Handset Feature No of Auto Retries Sys Busy Wait Time Called side BW Tihe Keypad ayout Ty Indicator Not used set to 0 pip OOH MH OLJZ Y Phone is ETACS type N Phone is a TACS only type ITACS Type Y Phone is an ITACS type N Used in combination with ETACS type Mobile Station supported TACS level 0 if TACS 1 if TACS 2 Calling Line Identification Y Calling Line Identification function
30. and can not be manu ally altered Press the On Off key on the phone and click immediately Start to start flashing Transfering hex load file is displayed The flash memory is erased after which the actual flash programming process is begun and also displayed by a graph After completion click OK to confirm SUCCESSFUL FLASHING disconnect the phone and if required connect an identical phone and repeat the procedure as from step 5 Exit the EMMA flash program Note If the flash programming is not succesful or has become interrupted during the flashing process the flash connector and phone battery have to be disconnected and reconnected before the flashing can be resumed Service Instructions Ericsson Mobile Phone EF738 Service Instructions Service Instructions Contents System Connector Signals 5 Disassembly 6 Reassembly 7 Flip Mount Inspection 8 Warranty Seal 8 Exchanging the Circuit Board 9 Fault Finding and Alignment __ 10 Sequence of Adjustments 11 Item 1 VCTCXO _ 11 Item 2 RSSI Calibration 12 Item 3 RF Output Power 13 Item 4 Maximum Deviation 14 Item 5 Nominal Deviation 15 Item 6 SAT Deviation 16 Item 7 TX Data Deviation 17 Item 8 AFMS and Harmonic Distortion 18 Item 9 Receiver Sensitivity 19 Service Instructions Service Instructions System Connector Signals External units are connected to the Transceiver Board via the 12 pin System Con nector AFMS
31. different acoustic signals are Ring signals Alarm signals Low battery warning Keypad tone or click Top LED Indicator A dual colour LED green amp red is positioned on the top front end Each LED is connected to a separate output port on GUSTAV Blinking rates and color of the Indicator LED are controlled by software Technical Description Radio Design General Overview The radio operates on the ETACS frequency band The transmitter operates at 872 0125 MHz to 905 9875 MHz and the receiver at 917 0125 MHz to 949 9875 MHz The duplex spacing is 45MHz and the channel separation is 25 KHz Together with the logic audio part the radio fulfills the ETACS requirements TX de TX MIXER amp TX SYNTH tr A POWER VCTCXO CONTROL 14 85MHz 962 995MHz Ly i DUPLEX RADIO IF gt FILTER RX SYNTH BERTINDY Bus Control 44 55MHz Audio Out Y 450KH IF 50KHz FRONT 45MHz END Figure 6 Radio Block Diagram Antenna Connector The antenna connector consists of a mechanical assembly that connects the antenna to the radio The impedance of the antenna connector is 500 Antenna Filters The duplex filter consists of a 4 pole TX section of band pass characteristic with a notch at the RX frequency and a 4 pole RX section filter
32. frequency 14 85 MHz is used as the 2nd LO signal The 450 KHz signal is filtered through a ceramic 2nd IF filter and fed to the input of the IF amplifier stage The output signal from this stage is filtered through a second ceramic 2nd IF filter and is then applied to the limiter The resulting 450 KHz square wave signal is fed to the digital discriminator in BERTINDY where it is demodulated and de emphasized before being passed to the ANTON IC for further audio processing Band Pass 1st IF Filter 2nd Image Filter This crystal filter is needed for spurious response rejection suppression of the 2nd image frequency and inter modulation rejection The crystal filter is a band pass filter with a center frequency of 45 MHz Some channel filtering is also performed in this filter Channel and Noise Reduction Filters Two bandpass 2nd IF filters are needed for broadband noise reduction and desired channel selection Each filter is a ceramic 4 pole bandpass filter with a center fre quency of 450 KHz 450 KHz Output From the limiter output the 450 KHz square wave signal is fed to the digital dis criminator in BERTINDY for demodulation This signal is also used by the AFC algorithm in determining the frequency error of the 14 85 MHz reference relative to the received signal RSSI Output A voltage which is logarithmically proportional to the RF input power of the received signal is produced in the IF AF IC RSSI Range The lower en
33. in Input Voltage Refer to Versions above Input Frequency Refer to Versions above Output Voltage Current 6Vpc 700mA Accessories Travel Charger Introduction The Travel Charger is a primary switched AC DC converter to be used as charger and power supply world wide without the need of an AC AC converter The Travel Charger consists of three parts mains primary AC cord e AC DC converter secondary DC cord Main Features The Travel Charger can be used as power source in two different ways for the 7X6 family phones the DeskTop Charger MC7000 Accessories Indicators A green LED located next to the secondary DC output is turned on whenever the mains voltage is available on the primary side LED Voc output connector Output Characteristics The output voltage and current of the Travel Charger should after 5 minutes stay within the values indicated as white area in the picture below U V 600 900 1000 Output power characteristics within range Output power characteristics within range first 5 minutes Output power characteristics out of range after 5 minutes Output power characteristics out of range 10 Connector Accessories Secondary DC cord Specifications Type No Dimensions AC DC Converter Power Plug Input Voltage Input Current Input Frequency Output Voltage Current GND n c
34. in the transmit audio path in order to limit the maximum audio level out of the ASIC and into the modula tor block Transmit Lowpass Filter A 3 KHz lowpass filter follows the hard limit to filter out the harmonic components caused by clipping in the hard limit AUDIODEV Programmable Gain Stage The AUDIODEV programmable gain stage follows the TX lowpass filter to allow adjustment of the maximum transmit deviation This stage is provided to trim out tolerances in the following summing stage The nominal gain in the AUDIODEV stage is 0 dB with an adjustment range from 3 2 to 2 8 dB in steps of 0 4 dB Test mode 14 can be used to adjust the AUDIODEV stage for TX audio The transmitted DTMF tone has a separate setting for AUDIODEV in EEPROM It needs to be adjusted to provide enough gain after the compressor so that the signal does not clip in the compressor Summing Amplifier The summing amplifier is provided to combine the TX audio DTMF tone SAT tone and Manchester data into the modulator The input resistors and feedback resis tor for this circuit are external to the ASIC to allow for gain adjustments TXSENSE Programmable Gain Stage The TXSENSE programmable gain stage is an amplifier which is provided to trim out tolerances in the modulator but is currently not used however set to a default value of 0 dB This stage has an adjustment range from 3 2 to 2 8 dB with steps of 0 4 dB Low Voltage Detect Circuit A compar
35. is a basic charger which converts AC to DC by using a conven tional transformer followed by a rectifying circuitry This charger can consequently not be used worldwide as opposed to a primary switched charger and will therefor be available in several different versions as listed on next page The Rapid Charger consists of e AC DC converter incl wall plug e secondary cord with power connector The AC DC converter is plugged directly into the mains power outlet and the recti fied DC voltage current is distributed via the secondary cord to the power connec tor which is plugged into the system connector of the phone Main Features The Rapid Charger can be used as power source in two different ways for e the 7X8 family phones the DeskTop Charger MC7000 Accessories Versions The Rapid Charger is designed in several versions for different mains voltages fre quencies and power outlets as specified below Mains voltage Frequency Mains plug 115V 10 60Hz 5 US standard 230V 10 to 6 50Hz 5 EU standard US Thailand UK Hong Kong 240V 10 to 6 50Hz 5 UK standard 240V 10 50Hz 5 AUS standard Connectors Secondary DC cord GND Voc Specifications Type No 402 0034 UK Dimensions AC DC Converter 78 x 42 x 45 mm 3 1 x 1 7 x 1 8 in excl wall plug Power Plug 24x 11x 11 mm 0 9 x 0 4 x 0 4
36. minimum length of an international phone number Three Level Menu Y 3 level user menu structure is set to comply with the User s Manual N 2 level user menu structure Test Service Programs SOUNDS amp GENERAL SOUNDS amp GENERAL Ring Vol Menu Ringtone Menu KeySound Menu Silent Menu Not used set to N Backlite Menu Greeting Menu Language Menu Reset Menu em Used Menu Keylock Menu Not used set to N ZKKKKKKZKKKE z z z Ring Volume Menu Y Ringing volume selection Low Med High Step Silent enabled N Ringing volume selection disabled RingTone Menu Y Ringing tone selection Low Med High Mixed Scale Fast Melodies enabled N Ringing tone selection disabled KeySound Menu Y Key sound selection Burst Continuous Click Silent enabled N Key sound selection disabled Silent Menu Y Silent Mode selection Off On enabled N Silent Mode selection disabled BackLite Menu Y Backlight selection Off On 10sec On 20sec enabled N Backlight selection disabled Greeting Menu Y Greeting String at power on choice enabled N Greeting String disabled Language Menu Y Language selection English Espanol Italiano Deutsch Melayu enabled N Language selection disabled Reset Menu Y Reset option Reset All enabled N Reset option disabled Memory Used Menu Y Memory Used Menu is accessable N Memory Used Menu not accessible Key
37. number can be programmed in service mode for internal tests Total Number of Dedicated Control Channels in System A Maximum number of dedicated control channels in System A Total Number of Dedicated Control Channels in System B Maximum number of dedicated control channels in System B Number of Emergency Numbers Determines the number lt 3 of available emergency numbers for the country Emergency Number 1 States the first emergency number Emergency Number 2 States the second emergency number if exists Emergency Number 3 States the third emergency number if exists Enquiry Number States the enquiry number Country International Prefix Prefix required when dialing an international call This parameter detects an international call at call restrictions Test Service Programs NAM Each country area is subdivided into NAM areas NAMI and NAM2 which are pro grammed with System A and System B parameters when shipped from factory A configuration of system and subscriber data preferred system subscriber number etc can be programmed into each NAM International Mobile Station Identity IMSI This IMSI identity is a 10 digit number composed of three parts MNC Mobile Network Code 3 digits MCC Mobile Country Code 1 digit MSIN Mobile Station Identification Number 6 digits Subscriber Number The subscriber number may include from 0 up to 10 digits Pref Sys Both NAMSs associated with each country a
38. on the battery in the rear slot The CPU then activates the discharge operation by draining the battery at a suitable resistive load LED Indicators The LEDs are used for indication of the various charging phases Front LEDs The two front LEDs green and red can be On and Off in any combination except both On Rear LEDs The two rear LEDs green and red can be On and Off in any combination Temperature Guard A temperature related voltage is generated due to an onboard NTC resistor and fed to an input of the CPU for detection and measures to prevent overheating The threshold is set to 55 C onboard corresponding to an ambient temperature of 35 C Power Distribution for Phone Operation The power to the front slot for phone operation is entirely controlled by the phone The various current values needed in different situations like stand by or transmis sion are programmed and stored in the telephone The MC7000 is able to deliver 500 700 mA to the phone depending on the power source is being connected Battery Charging The charging of both batteries is turned on and off by a switch circuitry which is controlled by the Central Processing Unit Charging is only possible for one slot at a time where the front slot has got highest priority i e charging of the spare battery will not begin until the phone battery is fully charged or removed The batteries being used are four 1 2V cell NiMH Nickel Metal Hydride or Ni
39. positive input of an op amp where the detected output power level is connected to the negative input of the same op amp The op amp produces an error voltage that controls the base current of a transistor which in turn varies the output level of the PA Technical Description TX Filtering The reduction of TX spurious emissions and TX noise in the RX band is achieved with two filters The first is a bandpass SAW filter The second filter is the TX branch of the duplexer filter The response is predominately band pass with a notch in the RX band to protect the receiver from TX noise power High frequency attenu ation provides reduction in the level of TX harmonics Protection against Electro Static Discharge ESD is also provided by the high pass element of the duplexer TX branch MALIN MALIN is an integrated RF circuit for FDMA cellular telephones The circuit is designed for a radio architecture using one synthesizer for both RX and TX parts The transmitter portion consists of a TX IF VCO and a TX mixer The base band signal modulates the TX IF via an external tank circuit which is then up converted to the TX frequency by the TX mixer A programmable prescaler is included for use in the main synthesizer loop and power down control is provided for current saving TX IF VCO The TX IF is generated by an internal oscillator of MALIN Tuning is performed by an external tank circuit where the center frequency is controlled by the auxilia
40. programming cable to the phone Keep the phone turned OFF until further notice 7 4 Fully charged NTZ 112 311 battery e 1 2 B EE N KRY 101 1135 10 R1A Note Use a fully charged phone battery since the interface is powered by the phone The use of an even slightly discharged battery may result in erroneous flashing Flashing Instructions 1 In the EMMA window of the Program Manager first double click the subdirec tory etacsflash and then double click the wanted flasher program 2 If the default Com Port has not previously been set Click Settings and Com Port select the default Com Port Com1 Com4 and click OK 3 To check that the appropriate input file will be used Click Settings and Input File click Default to select the default file or New to select a different input file 45 Test Service Programs 46 8 Check that the phone is connected to the PC with a fully charged battery as described on previous page Click Start to enter the flashing dialogue If required a Com Port different to the default port can be temporarily selected The baud rate 9600 is controlled by the program
41. system connector Turn the transmitter on TP 2 2 Monitor RF peak deviation If the deviation is outside the limits adjust the deviation Enter TP 27 Start the trimming by pressing M tn N Trim audio deviation to 5 38 6 02 kHz by pressing and to increase decrease the deviation Allowed trim values are 2 to 29 Trim step size is 0 4dB per step 9 Press M S to store the value 15 Service Instructions 16 Item 6 SAT Deviation Purpose Checking and if necessary calibrating the SAT Supervisor Audio Tone deviation of the transmitter Test method Radio test set in TX mode Input signal None Measurement point At the antenna connector measured with a deviation meter Limit 1 7kHz 0 5dB 1 60 1 80 kHz Procedure 1 Mute the TX audio path TP 20 0 Activate the SAT tone TP 22 1 Unmute the TX SAT path TP 22 4 Turn the transmitter on TP 2 2 Monitor the SAT deviation If the deviation is outside the limits adjust the deviation Enter TP 22 Start the trimming by pressing M O LU N Trim SAT deviation to 1 60 1 80 KHz by pressing and to increase decrease the deviation Allowed trim values are 2 to 29 Trim step size is 0 3dB per step 10 Press M S to store the value Service Instructions Item 7 TX Data Deviation Purpose Checking and if necessary calibrating the TX data deviation of the transmitter Test m
42. test handset by holding down the M button and pressing 90 40 59 or by pressing 90 40 59 followed by MM However if the Test Program Enter function is enabled in the telephone the pro gram can be initiated and run directly from the keypad by pressing the same sequence M MENU When the phone enters the test mode the hardware becomes initialized and the text TEST INPUT appears in the display To step forward and backwards in the test program press SEND and RCL To choose a specific test press its number followed by the button Return to TEST INPUT Press the C or M button to return to the input mode where the TEST INPUT prompt is displayed Exit To exit from the test program select test option 99 and press the button Test Service Programs Individual Test Options A list describing the use of the test program options follows below A summary of the test options and possible parameter values is given as well 1 CH NUMBER Setting of channel number 2 TX POWER 4 FLASHER 5 PWR CAL 6 TX DETECT 7 TX SENS Choose any chanel in the ETACS system 0 600 1329 2047 Default setting is channel 1 To change channel number enter a 4 digit decimal number fol lowed by Use and to step backwards forwards Channel number and signal strength are displayed Sets the transmitter on and offF and determines the output power 8 off 7 power level 7 minimum output power 6 power level 6 5 power level 5 4 powe
43. 0375 920 0375 1351 872 5625 917 5625 1401 873 8125 918 8125 1451 875 0625 920 0625 1352 872 5875 917 5875 1402 873 8375 918 8375 1452 875 0875 920 0875 1353 872 6125 917 6125 1403 873 8625 918 8625 1453 875 1125 920 1125 1354 872 6375 917 6375 1404 873 8875 918 8875 1454 875 1375 920 1375 1355 872 6625 917 6625 1405 873 9125 918 9125 1455 875 1625 920 1625 1356 872 6875 917 6875 1406 873 9375 918 9375 1456 875 1875 920 1875 1357 8727125 917 7125 1407 873 9625 918 9625 1457 875 2125 920 2125 1358 872 7375 917 7375 1408 873 9875 918 9875 1458 875 2375 920 2375 1359 872 7625 917 7625 1409 874 0125 919 0125 1459 875 2625 920 2625 1360 8727875 917 7875 1410 874 0375 919 0375 1460 8375 2875 920 2875 1361 872 8125 917 8125 1411 874 0625 919 0625 1461 875 3125 920 3125 1362 872 8375 917 8375 1412 874 0875 919 0875 1462 875 3375 920 3375 1363 872 8625 917 8625 1413 874 1125 919 1125 1463 875 3625 920 3625 1364 872 8875 917 8875 1414 874 1375 919 1375 1464 875 3875 920 3875 1365 872 9125 917 9125 1415 874 1625 919 1625 1465 875 4125 920 4125 1366 872 9375 917 9375 1416 874 1875 919 1875 1466 875 4375 920 4375 1367 872 9625 917 9625 1417 874 2125 919 2125 1467 875 4625 920 4625 1368 872 9875 917 9875 1418 874 2375 919 2375 1468 8754875 920 4875 1369 873 0125 918 0125 1419 874 2625 919 2625 1469 875 5125 920 5125 1370 873 0375 918 0375 1420 8742875 919 2875 1470 875 5375 920 5375 1371 873 0625 918 0625 1421 874 3125 919 3125 1471 875 5625
44. 15 897 8625 942 8625 365 899 1125 944 1125 415 900 3625 945 3625 316 897 8875 942 8875 366 899 1375 944 1375 416 900 3875 945 3875 317 897 9125 942 9125 367 899 1625 944 1625 417 900 4125 945 4125 318 897 9375 942 9375 368 899 1875 944 1875 418 900 4375 945 4375 319 897 9625 942 9625 369 899 2125 944 2125 419 900 4625 945 4625 320 897 0875 942 9875 370 899 2375 944 2375 420 900 4875 945 4875 321 898 0125 943 0125 371 899 2625 944 2625 421 900 5125 945 5125 322 898 0375 943 0375 372 899 2875 944 2875 422 900 5375 945 5375 323 898 0625 943 0625 373 899 3125 944 3125 423 900 5625 945 5625 324 898 0875 943 0875 374 899 3375 944 3375 424 900 5875 945 5875 325 898 1125 943 1125 375 899 3625 944 3625 425 900 6125 945 6125 326 898 1375 943 1375 376 899 3875 944 3875 426 900 6375 945 6375 327 898 1625 943 1625 377 899 4125 944 4125 427 900 6625 945 6625 328 898 1875 943 1875 378 899 4375 944 4375 428 900 6875 945 6875 329 898 2125 943 2125 379 899 4625 944 4625 429 900 7125 945 7125 330 898 2375 943 2375 380 899 4875 944 4875 430 900 7375 945 7375 331 898 2625 943 2625 381 899 5125 944 5125 431 900 7625 945 7625 332 898 2875 943 2875 382 899 5375 944 5375 432 900 7875 945 7875 333 898 3125 943 3125 383 899 5625 944 5625 433 900 8125 945 8125 334 898 3375 943 3375 384 899 5875 944 5875 434 900 8375 945 8375 335 898 3625 943 3625 385 899 6125 944 6125 435 900 8625 945 8625 336 898 3875 943 3
45. 18 2625 1429 874 5125 919 5125 1330 872 0375 917 0375 1380 873 2875 918 2875 1430 874 5375 919 5375 1331 872 0625 917 0625 1381 873 3125 918 3125 1431 874 5625 919 5625 1332 872 0875 917 0875 1382 873 3375 918 3375 1432 874 5875 919 5875 1333 872 1125 917 1125 1383 873 3625 918 3625 1433 874 6125 919 6125 1334 872 1375 917 1375 1384 873 3875 918 3875 1434 874 6375 919 6375 1335 872 1625 917 1625 1385 873 4125 918 4125 1435 874 6625 919 6625 1336 872 1875 917 1875 1386 8734375 918 4375 1436 874 6875 919 6875 1337 872 2125 917 2125 1387 873 4625 918 4625 1437 874 7125 919 7125 1338 872 2375 917 2375 1388 873 4875 918 4875 1438 874 7375 919 7375 1339 872 2625 917 2625 1389 873 5125 918 5125 1439 874 7625 919 7625 1340 872 2875 917 2875 1390 873 5375 918 5375 1440 874 7875 919 7875 1341 872 3125 917 3125 1391 873 5625 918 5625 1441 874 8125 919 8125 1342 872 3375 917 3375 1392 873 5875 918 5875 1442 874 8375 919 8375 1343 872 3625 917 3625 1393 873 6125 918 6125 1443 874 8625 919 8625 1344 872 3875 917 3875 1394 873 6375 918 6375 1444 874 8875 919 8875 1345 872 4125 917 4125 1395 873 6625 918 6625 1445 874 9125 919 9125 1346 872 4375 917 4375 1396 873 6875 918 6875 1446 874 9375 919 9375 1347 872 4625 917 4625 1397 873 7125 918 7125 1447 874 9625 919 9625 1348 872 4875 917 4875 1398 873 7375 918 7375 1448 874 9875 919 9875 1349 872 5125 917 5125 1399 873 7625 918 7625 1449 875 0125 920 0125 1350 872 5375 917 5375 1400 873 7875 918 7875 1450 875
46. 25 1676 880 6875 925 6875 1726 881 9375 926 9375 1776 883 1875 928 1875 1677 880 7125 925 7125 1727 8819625 926 9625 1777 883 2125 928 2125 1678 880 7375 925 7315 1728 881 9875 926 9875 1778 8832375 928 2375 14 System Introduction Channels 1779 1928 Ch Tx Rx Ch Tx Rx Ch Tx Rx 1779 883 2625 928 2625 1829 884 5125 929 5125 1879 885 7625 930 7625 1780 8832875 928 2875 1830 884 5375 929 5375 1880 885 7875 930 7875 1781 883 3125 928 3125 1831 884 5625 929 5625 1881 885 8125 930 8125 1782 883 3375 928 3375 1832 884 5875 929 5875 1882 885 8375 930 8375 1783 883 3625 928 3625 1833 8846125 929 6125 1883 885 8625 930 8625 1784 883 3875 928 3875 1834 884 6375 929 6375 1884 885 8875 930 8875 1785 883 4125 928 4125 1835 884 6625 929 6625 1885 885 9125 930 9125 1786 883 4375 928 4375 1836 884 6875 929 6875 1886 885 9375 930 9375 1787 8834625 928 4625 1837 884 7125 929 7125 1887 885 9625 930 9625 1788 883 4875 928 4875 1838 884 7375 929 7375 1888 885 9875 930 9875 1789 883 5125 928 5125 1839 884 7625 929 7625 1889 886 0125 931 0125 1790 883 5375 928 5375 1840 884 7875 929 7875 1890 886 0375 931 0375 1791 883 5625 928 5625 1841 884 8125 929 8125 1891 886 0625 931 0625 1792 883 5875 928 5875 1842 884 8375 929 8375 1892 886 0875 931 0875 1793 883 6125 928 6125 1843 884 8625 929 8625 1893 886 1125 931 1125 1794 883 6375 928 6375 1844 884 8875 929 8875 1894 886 1375 931 1375 1795 883 6625 928 6625 1845 884 9125 929 9125 1895 886
47. 3 Main Features 13 Indicators 14 Output Characteristics 14 Connectors 15 Cigarette Lighter Adaptor 15 Power Plug 15 Specifications 15 Continued on next page Accessories DeskTop Charger MC7000 17 Introduction 17 Electronics 18 Central Processing Unit __ 18 Supply Current Monitor 19 Charge Switches 19 Front Slot Switch 19 Rear Slot Switch 19 Voltage Monitors 19 Front Slot Monitor 19 Rear Slot Monitor 19 Phone On Off Status 20 Discharger 20 LED Indicators 20 Front LEDs 20 Rear LEDs 20 Temperature Guard 20 Power Distribution for Phone Operation 20 Battery Charging 20 Front Slot Charger 21 Main Charging 21 Trickle Charging 21 Rear Slot Charger 21 Main Charging 21 Trickle Charging 21 Discharging 21 Error Detection 22 LED Indicators 22 Front Indicator Phone Slot 22 Rear Indicator Spare Battery Slot 22 Specifications 22 Connectors and Signals 23 System Bus Connector 23 Front Slot 23 Rear Slot 24 Portable HandsFree _ 25 Introduction 25 Portable HandsFree Features 25 Specifications 26 Microphone 26 Earphone 26 Connector and Signals 26 Continued on next page Vehicle HandsFree Solution HF7300 Introduction Accessories HandsFree Features HandsFree Components Cradle Stick On Microphone External Speaker HandsFree Unit Microphone Amplifier Speaker Amplifier Modem Handset Option Audio Switch Control External Audio Control Music Mute Control Power Su
48. 3375 942 3375 195 894 8625 939 8625 245 806 1125 941 1125 295 897 3625 942 3625 196 894 8875 939 8875 246 896 1375 941 1375 296 897 3875 942 3875 197 894 9125 939 9125 247 896 1625 941 1625 297 897 4125 942 4125 198 894 9375 939 9375 248 896 1875 941 1875 298 897 4375 942 4375 199 894 9625 939 9625 249 896 2125 941 2125 299 897 4625 942 4625 18 System Introduction Channels 300 449 Ch Tx Rx Ch Tx Rx Ch Tx Rx 300 897 4875 942 4875 350 898 7375 943 7375 400 899 9875 944 9875 301 897 5125 942 5125 351 898 7625 943 7625 401 900 0125 945 0125 302 897 5375 942 5375 352 898 7875 943 7875 402 900 0375 945 0375 303 897 5625 942 5625 353 898 8125 943 8125 403 900 0625 945 0625 304 897 5875 942 5875 354 898 8375 943 8375 404 900 0875 945 0875 305 897 6125 942 6125 355 898 8625 943 8625 405 900 1125 945 1125 306 897 6375 942 6375 356 898 8875 943 8875 406 900 1375 945 1375 307 897 6625 942 6625 357 898 9125 943 9125 407 900 1625 945 1625 308 897 6875 942 6875 358 898 9375 943 9375 408 900 1875 945 1875 309 897 7125 942 7125 359 898 9625 943 9625 409 900 2125 945 2125 310 897 7375 942 7375 360 898 9875 943 9875 410 900 2375 945 2375 311 897 7625 942 7625 361 899 0125 944 0125 411 900 2625 945 2625 312 897 7875 942 7875 362 899 0375 944 0375 412 900 2875 945 2875 313 897 8125 942 8125 363 899 0625 944 0625 413 900 3125 945 3125 314 897 8375 942 8375 364 899 0875 944 0875 414 900 3375 945 3375 3
49. 4375 479 901 9625 946 9625 529 903 2125 948 2125 579 904 4625 949 4625 480 901 9875 946 9875 530 903 2375 948 2375 580 904 4875 949 4875 481 902 0125 947 0125 531 903 2625 948 2625 581 904 5125 949 5125 482 902 0375 947 0375 532 903 2875 948 2875 582 904 5375 949 5375 483 902 0625 947 0625 533 903 3125 948 3125 583 904 5625 949 5625 484 902 0875 947 0875 534 903 3375 948 3375 584 904 5875 949 5875 485 902 1125 947 1125 535 903 3625 948 3625 585 904 6125 949 6125 486 902 1375 947 1375 536 903 3875 948 3875 586 904 6375 949 6375 487 902 1625 947 1625 537 903 4125 948 4125 587 904 6625 949 6625 488 902 1875 947 1875 538 903 4375 948 4375 588 904 6875 949 6875 489 902 2125 947 2125 539 903 4625 948 4625 589 904 7125 949 7125 490 902 2375 947 2375 540 903 4875 948 4875 590 904 7375 949 7375 491 902 2625 947 2625 541 903 5125 948 5125 591 904 7625 949 7625 492 902 2875 947 2875 542 903 5375 948 5375 592 904 7875 949 7875 493 902 3125 947 3125 543 903 5625 948 5625 593 904 8125 949 8125 494 902 3375 947 3375 544 903 5875 948 5875 594 904 8375 949 8375 495 902 3625 947 3625 545 903 6125 948 6125 595 904 8625 949 8625 496 902 3875 947 3875 546 903 6375 948 6375 596 904 8875 949 8875 497 902 4125 947 4125 547 903 6625 948 6625 597 904 9125 949 9125 498 902 4375 947 4375 548 903 6875 948 6875 598 904 9375 949 9375 499 902 4625 947 4625 549 903 7125 948 7125 599 904 9625 949 9625 600 904 9875 949 9875 20 Technical Description Eric
50. 5 1513 876 6125 921 6125 1563 877 8625 922 8625 1613 879 1125 924 1125 1514 8766375 921 6375 1564 877 8875 922 8875 1614 879 1375 924 1375 1515 _ 876 6625 921 6625 1565 877 9125 922 9125 1615 879 1625 924 1625 1516 876 6875 921 6875 1566 877 9375 922 9375 1616 879 1875 924 1875 1517 876 7125 921 7125 1567 877 9625 922 9625 1617 879 2125 924 2125 1518 876 7375 921 7375 1568 877 9875 922 9875 1618 879 2375 924 2375 1519 876 7625 921 7625 1569 878 0125 923 0125 1619 879 2625 924 2625 1520 876 7875 921 7875 1570 878 0375 923 0375 1620 879 2875 924 2875 1521 876 8125 921 8125 1571 878 0625 923 0625 1621 879 3125 924 3125 1522 876 8375 921 8375 1572 878 0875 923 0875 1622 879 3375 924 3375 1523 876 8625 921 8625 1573 878 1125 923 1125 1623 879 3625 924 3625 1524 876 8875 921 8875 1574 878 1375 923 1375 1624 879 3875 924 3875 1525 876 9125 921 9125 1575 878 1625 923 1625 1625 879 4125 924 4125 1526 876 9375 921 9375 1576 878 1875 923 1875 1626 8794375 924 4375 1527 876 9625 921 9625 1577 878 2125 923 2125 1627 879 4625 924 4625 1528 876 9875 921 9875 1578 8782375 923 2375 1628 879 4875 924 875 System Introduction Channels 1629 1778 Ch Tx Rx Ch Tx Rx Ch Tx Rx 1629 879 5125 924 5125 1679 880 7625 925 7625 1729 882 0125 927 0125 1630 879 5375 924 5375 1680 880 7875 925 7875 1730 882 0375 927 0375 1631 879 5625 924 5625 1681 880 8125 925 8125 1731 882 0625 927 0625 1632 879 5875 924 5875 1682 880 8375 925 8375 1732 882 0875
51. 5 932 8375 2012 889 0875 934 0875 1963 887 8625 932 8625 2013 889 1125 934 1125 1964 887 8875 932 8875 2014 889 1375 934 1375 1965 887 9125 932 9125 2015 889 1625 934 1625 1966 887 9375 932 9375 2016 889 1875 934 1875 1967 887 9625 932 9625 2017 889 2125 934 2125 1968 887 9875 932 9875 2018 889 2375 934 2375 1969 888 0125 933 0125 2019 889 2625 934 2625 1970 888 0375 933 0375 2020 889 2875 934 2875 197 888 0625 933 0625 2021 889 3125 934 3125 1972 888 0875 933 0875 2022 889 3375 934 3375 1973 888 1125 933 1125 2023 889 3625 934 3625 1974 888 1375 933 1375 2024 889 3875 934 3875 1975 888 1625 933 1625 2025 889 4125 934 4125 1976 888 1875 933 1875 2026 8894375 934 4375 1977 888 2125 933 2125 2027 889 4625 934 4625 1978 888 2375 933 2375 2028 889 4875 934 4875 16 Table 2 Channels 0 600 Channels 0 149 a 889 9875 890 0125 890 0375 890 0625 890 0875 890 1125 890 1375 890 1625 890 1875 890 2125 890 2375 890 2625 890 2875 890 3125 890 3375 890 3625 890 3875 890 4125 890 4375 890 4625 890 4875 890 5125 890 5375 890 5625 890 5875 890 6125 890 6375 890 6625 890 6875 890 7125 890 7375 890 7625 890 7875 890 8125 890 8375 890 8625 890 8875 890 9125 890 9375 890 9625 890 9875 891 0125 891 0375 891 0625 891 0875 891 1125 891 1375 891 1625 891 1875 891 2125 934 9875 935 0125 935 0375 935 0625 935 0875 935 1125 935 1375 935 1625 935 1875
52. 591 878 5625 923 5625 1492 876 0875 921 0875 1542 877 3375 922 3375 1592 878 5875 923 5875 1493 876 1125 921 1125 1543 877 3625 922 3625 1593 878 6125 923 6125 1494 876 1375 921 1375 1544 877 3875 922 3875 1594 878 6375 923 6375 1495 876 1625 921 1625 1545 877 4125 922 4125 1595 878 6625 923 6625 1496 876 1875 921 1875 1546 877 4375 922 4375 1596 878 6875 923 6875 1497 876 2125 921 2125 1547 877 4625 922 4625 1597 878 7125 923 7125 1498 8762375 921 2375 1548 877 4875 922 4875 1598 878 7375 923 7375 1499 8762625 921 2625 1549 877 5125 922 5125 1599 878 7625 923 7625 1500 876 2875 921 2875 1550 877 5375 922 5375 1600 878 7875 923 7875 1501 876 3125 921 3125 1551 877 5625 922 5625 1601 878 8125 923 8125 1502 876 3375 921 3375 1552 877 5875 922 5875 1602 878 8375 923 8375 1503 876 3625 921 3625 1553 877 6125 922 6125 1603 878 8625 923 8625 1504 876 3875 921 3875 1554 877 6375 922 6375 1604 878 8875 923 8875 1505 8764125 921 4125 1555 877 6625 922 6625 1605 878 9125 923 9125 1506 8764375 921 4375 1556 877 6875 922 6875 1606 8789375 923 9375 1507 876 4625 921 4625 1557 8777125 922 7125 1607 878 9625 923 9625 1508 8764875 921 4875 1558 8777375 922 1315 1608 878 9875 923 9875 1509 876 5125 921 5125 1559 8777625 922 7625 1609 879 0125 924 0125 1510 876 5375 921 5375 1560 877 7875 922 7875 1610 879 0375 924 0375 1511 8765625 921 5625 1561 877 8125 922 8125 1611 879 0625 924 0625 1512 876 5875 921 5875 1562 877 8375 922 8375 1612 879 0875 924 087
53. 625 152 893 7875 938 7875 202 895 0375 940 0375 252 896 2875 941 2875 153 893 8125 938 8125 203 895 0625 940 0625 253 896 3125 941 3125 154 893 8375 938 8375 204 895 0875 940 0875 254 896 3375 941 3375 155 893 8625 938 8625 205 805 1125 940 1125 255 896 3625 941 3625 156 893 8875 938 8875 206 895 1375 940 1375 256 896 3875 941 3875 157 893 9125 938 9125 207 895 1625 940 1625 257 896 4125 941 4125 158 893 9375 938 9375 208 895 1875 940 1875 258 896 4375 941 4375 159 893 9625 938 9625 209 895 2125 940 2125 259 896 4625 941 4625 160 893 0875 938 9875 210 895 2375 940 2375 260 896 4875 941 4875 161 894 0125 939 0125 211 895 2625 940 2625 261 896 5125 941 5125 162 894 0375 939 0375 212 895 2875 940 2875 262 896 5375 941 5375 163 894 0625 939 0625 213 895 3125 940 3125 263 896 5625 941 5625 164 894 0875 939 0875 214 895 3375 940 3375 264 896 5875 941 5875 165 894 1125 939 1125 215 895 3625 940 3625 265 896 6125 941 6125 166 894 1375 939 1375 216 805 3875 940 3875 266 896 6375 941 6375 167 894 1625 939 1625 217 805 4125 940 4125 267 896 6625 941 6625 168 894 1875 939 1875 218 805 4375 940 4375 268 896 6875 941 6875 169 894 2125 939 2125 219 805 4625 940 4625 269 896 7125 941 7125 170 894 2375 939 2375 220 805 4875 940 4875 270 896 7375 941 7375 171 894 2625 939 2625 221 805 5125 940 5125 271 896 7625 941 7625 172 894 2875 939 2875 222 895 5375 940 5375 272 896 7875 941 7875 173 894 3125 939 3125 223 895 5625 940
54. 86 6875 931 6875 1817 884 2125 929 2125 1867 885 4625 930 4625 1917 886 7125 931 7125 1818 884 2375 929 2375 1868 885 4875 930 4875 1918 886 7375 931 7375 1819 884 2625 929 2625 1869 885 5125 930 5125 1919 886 7625 931 7625 1820 8842875 929 2875 1870 885 5375 930 5375 1920 886 7875 931 7875 1821 884 3125 929 3125 1871 885 5625 930 5625 1921 886 8125 931 8125 1822 884 3375 929 3375 1872 885 5875 930 5875 1922 886 8375 931 8375 1823 884 3625 929 3625 1873 885 6125 930 6125 1923 886 8625 931 8625 1824 884 3875 929 3875 1874 885 6375 930 6375 1924 886 8875 931 8875 1825 884 4125 929 4125 1875 885 6625 930 6625 1925 886 9125 931 9125 1826 884 4375 929 4375 1876 885 6875 930 6875 1926 886 9375 931 9375 1827 8844625 929 4625 1877 885 7125 930 7125 1927 886 9625 931 9625 1828 8844875 929 4875 1878 885 7375 930 7375 1928 886 9875 931 9875 System Introduction Channels 1929 2047 Ch Tx Rx Ch Tx Rx Ch Tx Rx 1929 887 0125 932 0125 1979 888 2625 933 2625 2029 889 5125 934 5125 1930 85870375 932 0375 1980 8882875 933 2875 2030 889 5375 934 5375 1931 887 0625 932 0625 1981 888 3125 933 3125 2031 889 5625 934 5625 1932 887 0875 932 0875 1982 888 3375 933 3375 2032 889 5875 934 5875 1933 887 1125 932 1125 1983 888 3625 933 3625 2033 889 6125 934 6125 1934 887 1375 932 1375 1984 888 3875 933 3875 2034 889 6375 934 6375 1935 887 1625 932 1625 1985 888 4125 933 4125 2035 889 6625 934 6625 1936 887 1875 932 1875 1986 888 4375 933 4375 2036
55. 875 386 899 6375 944 6375 436 900 8875 945 8875 337 898 4125 943 4125 387 899 6625 944 6625 437 900 9125 945 9125 338 898 4375 943 4375 388 899 6875 944 6875 438 900 9375 945 9375 339 898 4625 943 4625 389 899 7125 9447125 439 900 9625 945 9625 340 898 4875 943 4875 390 899 7375 944 7375 440 900 9875 945 9875 341 898 5125 943 5125 391 899 7625 944 7625 441 901 0125 946 0125 342 898 5375 943 5375 392 899 7875 944 7875 442 901 0375 946 0375 343 898 5625 943 5625 393 899 8125 944 8125 443 901 0625 946 0625 344 898 5875 943 5875 394 899 8375 944 8375 444 901 0875 946 0875 345 898 6125 943 6125 395 899 8625 944 8625 445 901 1125 946 1125 346 898 6375 943 6375 396 899 8875 944 8875 446 901 1375 946 1375 347 898 6625 943 6625 397 899 9125 944 9125 447 901 1625 946 1625 348 898 6875 943 6875 398 899 9375 944 9375 448 901 1875 946 1875 349 898 7125 943 7125 399 899 9625 944 9625 449 901 2125 946 2125 System Introduction Channels 450 600 Ch Tx Rx Ch Tx Rx Ch Tx Rx 450 901 2375 946 2375 500 902 4875 947 4875 550 903 7375 948 7375 451 901 2625 946 2625 501 902 5125 947 5125 551 903 7625 948 7625 452 901 2875 946 2875 502 902 5375 947 5375 552 903 7875 948 7875 453 901 3125 946 3125 503 902 5625 947 5625 553 903 8125 948 8125 454 901 3375 946 3375 504 902 5875 947 5875 554 903 8375 948 8375 455 901 3625 946 3625 505 902 6125 947 6125 555 903 8625 948 8625 456 901 3875 946 3875 506 902 6375 947 6375 556 903 8875
56. 920 5625 1372 873 0875 918 0875 1422 874 3375 919 3375 1472 875 5875 920 5875 1373 873 1125 918 1125 1423 874 3625 919 3625 1473 875 6125 920 6125 1374 873 1375 918 1375 1424 874 3875 919 3875 1474 875 6375 920 6375 1375 873 1625 918 1625 1425 874 4125 919 4125 1475 875 6625 920 6625 1376 873 1875 918 1875 1426 874 4375 919 4375 1476 875 6875 920 6875 1377 873 2125 918 2125 1427 874 4625 919 4625 1477 875 7125 920 7125 1378 873 2375 918 2375 1428 8744875 919 4875 1478 875 7375 920 7375 12 System Introduction Channels 1479 1628 Ch Tx Rx Ch Tx Rx Ch Tx Rx 1479 875 7625 920 7625 1529 877 0125 922 0125 1579 8782625 923 2625 1480 875 7875 920 7875 1530 877 0375 922 0375 1580 8782875 9232875 1481 875 8125 920 8125 1531 877 0625 922 0625 1581 878 3125 923 3125 1482 875 8375 920 8375 1532 877 0875 922 0875 1582 878 3375 923 3375 1483 875 8625 920 8625 1533 877 1125 922 1125 1583 878 3625 923 3625 1484 875 8875 920 8875 1534 877 1375 922 1375 1584 878 3875 923 3875 1485 875 9125 920 9125 1535 877 1625 922 1625 1585 878 4125 923 4125 1486 875 9375 920 9375 1536 877 1875 922 1875 1586 878 4375 923 4375 1487 875 9625 920 9625 1537 877 2125 922 2125 1587 878 4625 923 4625 1488 875 9875 920 9875 1538 877 2375 922 2375 1588 878 4875 923 4875 1489 876 0125 921 0125 1539 877 2625 922 2625 1589 878 5125 923 5125 1490 8760375 921 0375 1540 877 2875 922 2875 1590 878 5375 923 5375 1491 876 0625 921 0625 1541 877 3125 922 3125 1
57. ACS which consists of data receiver data transmitter SAT detector and SAT transmitter The data receiver consists of three parts digital discriminator data decoder and wordsync detector The data transmitter sends data bytewise where the most significant bit is transmit ted first The SAT detection consists of continuous measurements of 10 12 ms and the three frequencies being used are 5970 6000 and 6030 Hz SAT generation of the three frequencies is also done in GUSTAV Baud Clock This block generates the baud rate for the serial interface of GUSTAV and is select able among the following baud rates 600 Power on default 1200 2400 4800 9600 12C Controller This part controls the communication between the EEPROM and the display FLASH EPROM The system program is stored in a low voltage Flash EPROM with 128k x 8 bit area EEPROM The customer PROM is a CMOS EEPROM with 4k x 8 bit area Data that has to be saved when the station is turned off is stored in this memory which contains the telephone number short numbers talk time area ID and other radio audio informa tion Technical Description Audio Design The baseband audio is processed by ANTON which is a mixed signal ASIC with a compander filters limiters and programmable gain blocks Receive Audio Circuit Description Receive Audio Interface The receive audio is demodulated by a digital discriminator in BERTINDY and then passed through
58. B in steps of 0 8 dB where the nominal setting is 8 dB This stage has calibration settings for three modes of operation external audio e internal audio DTMF tones The three calibration values are stored in the EEPROM Transmit Bandpass Filter The next block in the transmit audio chain is a switched capacitor bandpass filter which is designed to allow frequencies from 300 to 3000 Hz to pass through TX HF Attenuator Following the bandpass filter is a 0 to 49 dB attenuator for full duplex handsfree operation which is programmable in steps of 7 dB When the external audio signal on the system connector is low the software implements a handsfree algorithm that attenuates the unused audio path to prevent feedback from external speakers to microphone Compressor The audio is AC coupled from the transmit handsfree attenuator block into a 2 1 switch capacitor compressor This stage is enabled during the conversation modes of the phone and can be bypassed for testing Test mode 29 has two options for control of the compressor An integrator using an amplifier in the ASIC is configured to provide feedback from the output to the input of the compressor Pre emphasis A 3 dB Octave high pass filter follows the compressor This filter is used to equalize the audio spectrum by attenuating the low frequency components of the signal Technical Description Hard Limit A 13 5 dB gain hard limit follows the pre emphasis block
59. Cd Nickel Cadmium chargeable batteries without internal thermistor Accessories Front Slot Charger Main Charging The charging is entirely controlled by the phone which after being inserted into the charger slot starts being charged by the MC7000 Any possible charging of a spare battery in the rear slot is interrupted and 500 700 mA is delivered to the phone battery Note The phone does not have to be turned On when inserted into the charger slot due to its auto turn on feature Trickle Charging After the main charging the phone automatically returns to normal power distribu tion and trickle charging unless a spare battery then is going to be charged The power distribution and trickle charging to the phone is in that case inhibited until the spare battery charging is terminated Rear Slot Charger Main Charging The 500 700 mA charging current to the spare battery is entirely controlled by the Central Processing Unit Several algorithms are used to establish when the battery is fully charged e dv dt The battery voltage is sampled once a second for approximately one minute and the mean value is calculated The max mean value is stored and compared with consecutive values When a specific divergence is obtained the charging is ter minated peak detect The charging is terminated when the above mentioned values are less or identical to the max mean value for a specific time safety time elapsed 4 hours Th
60. Function Audio From Mobile Station ATMS Audio To Mobile Station EXTAUD External Analog Audio Accessory Sense AGND Audio Signal Ground reference PORTHF Portable Handsfree MUTE Music Mute VPPFLASH Flash Memory Voltage and Service Voltage VDD Logic Reference Status ON DFMS Data From Mobile Station GND Digital Ground and DC Return DTMS In Data To Mobile Station DCIO In Out DC positive pole for phone battery charging and external accessory powering Service Instructions Disassembly Remove the battery and the antenna Before opening the unit for further disassembly make sure that the parts can be placed on a dust free ESD protected surface NOTE Do not touch the display with your fingers 2 Place the phone on its front and remove four screws with the appropriate torx screwdrivers 3 Remove the back cover carefully from underneath 4 Loosen the remaining screws 6 10 Be careful not to damage the antenna connector 7 5 Carefully remove the board 1 from the front cover 2 by lifting it upwards 6 Remove the keypad 4 Service Instructions Reassembly O PS Place a front cover 2 on the workbench Assemble the keypad 4 Carefully place the board 1 into the front cover with the shield can upwards NOTE Do not touch the display with your fingers Drop a screw 10 into th
61. Hz tone at 5 7kHz deviation at a level of 115dBm to the antenna connector Turn the transmitter on TP 2 2 Disable the AFC TP 15 0 Enter RF sensitivity test TP 9 Press M S Press M to move to next adjustment Set the signal generator to 107dBm Press M S to store the value x O W ND Press M to move to next adjustment 10 Set the signal generator to 87dBm 11 Press M S to store the value Service Instructions Item 3 RF Output Power Purpose Checking and if necessary calibrating the RF output power Test method Radio test set in TX mode Input signal None Measurement point Output power at the antenna connector measured with an RF power meter Limit Power level Output power 2 26 5dBm 0 1dB 3 22 5dBm 0 5dB 4 18 5dBm 0 5dB 5 14 5dBm 0 5dB 6 10 5dBm 0 5dB 7 6 5dBm 1 0dB Procedure 1 Turn the transmitter on TP 2 2 7 Check if the output power is within the above stated limits Check the output power at low 1329 mid 1 and high channels 600 2 If the output power is not within the above stated limits use TP 5 to calibrate the output power 3 Press M to start the calibration and display power level and calibrated value 4 Use and to increase decrease the output power Press M S to store the value and step to next power level 5 Press C to turn off TX restore channel number and jump to menu 0 test input 13 Service Instruc
62. Lock Menu Y Key lock selection Unlock Lock enabled N Key lock selection disabled 23 Test Service Programs 24 CALL SET amp CALL DATA CALL SET amp CALLDATA Fastdial Menu Flip Menu Y Answ Opt Menu Y Minder Menu Y Tonesend Menu Y Acc Tone Menu Air Info Menu N Ca Type Menu Y LastTime Menu 24 LastChar Menu N ot Time Menu hd Tot Char Menu N Ca Cnt Menu X Not used set to N NNN FastDial Menu Y Fast Dial one key dial selection Off On enabled N Fast Dial selection disabled Flip Menu Y Flip answer end call selection Off On enabled N Flip answer end call disabled Answering Option Menu Y Answering method selection Any Key Send Only enabled N Answering method selection disabled Minder Menu Y Minder minute beep selection Off On enabled N Minder selection disabled Tone Send Menu Y Tone Send DTMF when key pressed during call selection Off On enabled N Tone Send selection disabled Access Tone Menu Y Access Tone outgoing call established selection Off On enabled N Access Tone selection disabled Air Info Menu Y Air Info duration or charge display selection Air Time Call Charge enabled N Air Info disabled Call Type Menu Y Call Type charge out or out in display selection Only Out Out and In enabled N Call Type charge display selection disabled Last
63. MS level by pressing and to increase decrease Press M S to store the value t Q Measure the receiver harmonic distortion 10 Should be less than 4 5 at AFMS using a CCITT filter Service Instructions Item 9 Receiver Sensitivity Purpose Checking the receiver sensitivity Test method Radio test set in RX mode Input signal Apply an RF signal at low mid and high channel modulated with a 1kHz tone at 5 7kHz deviation at a level of 113dBm to the antenna input Measurement point At the AFMS output from the system connector measured with an AC volt meter Limit Better than 20dB SINAD at low mid and high channel Procedure 1 Select channel TP 1 1329 1 or 600 2 Disable AFC TP 15 0 3 Turn the transmitter on TP 2 2 4 Apply an RF signal at low mid and high channel modulated with a 1kHz tone at 5 7kHz deviation at a level of 113dBm to the antenna input 5 Measure better than 20dB SINAD on AFMS using a CCITT filter 19 Service Instructions 20 Accessories Ericsson Mobile Phone EF738 Accessories Accessories Contents Rapid Charger 7 Introduction 7 Main Features 7 Versions 8 Connectors 8 Secondary DC cord 8 Specifications 8 Travel 7 9 Introduction 9 Main Features 9 Indicators 10 Output Characteristics 10 Connector 11 Secondary DC cord 11 Specifications 11 Vehicle Power Charger C 13 Introduction 1
64. ZKKKKZK ZK 2 2 2 Enable NAM Selection Y NAM selection enabled N NAM selection disabled Enable Country Selection Y Country selection enabled N Country selection disabled Security Code Menu Y Security Code 4 digit personal code Menu is accessible N Security Code Menu not accessible Memory Only Menu Y Memory Only calls from mem pos 1 10 only Menu is accessible N Memory Only Menu not accessible No Calling Menu Y No Calling receive only Menu is accessible N No Calling Menu not accessible No Inter Menu Y No Inter no international calls Menu is accessible N No Inter Menu not accessible Auto Lock Menu Y Auto Lock phone locked at power up Menu is accessible N Auto Lock Menu not accessible Test Service Programs LANGUAGES LANGUAGES Not used set to Y Spanish Y Italian Y Deutsch Y Melayu Y Not used set to N NNN Spanish Y Spanish language selectable N Spanish language not selectable Italian Y Italian language selectable N Italian language not selectable Deutsch Y German language selectable N German language not selectable Melayu Y Malayan language selectable N Malayan language not selectable NAM amp QUICK NAM NAM amp QUICK NAM ESN Y CODE Y N ROAM TYPE Y N CHARGE xv Y CHAN FCCHA FCCHB 540 44 NNN BANDA BANDB Y NN NO EMERG Y N EMERG 1
65. a com mand to the chip The auxiliary and main synthesizer can be powered down sepa rately and the RX VCO is controlled by BERTINDY The prescaler and the 90 MHz VCO of MALIN is controlled by sending power up down commands Lock Detect A signal showing when the synthesizer is locked is implemented in BERTINDY The lock detect circuit operates with both the main and the auxiliary synthesizers If both synthesizers are enabled the lock detect output becomes active when they are both locked If only one synthesizer is enabled the lock detect output becomes active when that one is locked Technical Description VCTCXO The task of the VCTCXO is to supply the synthesizer with a stable accurate refer ence frequency A 14 85 MHz crystal with DAC controlled varactor diodes and a transistor stage within BERTINDY constitues the TCXO circuit A software algo rithm is used for temperature compensation as well as an AFC function The operating frequency of the synthesizer reference oscillator is set by the crystal element The crystal is specified for a resonant frequency of 14 85 MHz at a specific load capacitance Tuning of the series resonance frequency is accomplished by adjusting the total series capacitance seen by the crystal Varactor diodes provide the method of varying the load capacitance posed to the crystal Both varactors are con trolled by DAC s within BERTINDY DACI is the fine tune adjustment and DAC2 is the coarse tune adjus
66. a first order active bandpass filter which is comprised of an op amp located in BERTIND Y External resistors and capacitors set the gain and bandpass of the filter and the output of this filter is then AC coupled through a capacitor to an external de emphasis network The interface between the radio and the baseband audio is between the discriminator s bandpass filter and the external de emphasis network De Emphasis Network The de emphasis network is composed of two series resistors and a shunt capacitor The audio is routed through a resistor pair into the receive input port on ANTON The received SAT is tapped off between the resistor pair and routed to a port on ANTON The shunt capacitor provides the necessary de emphasis slope to restore the low frequency components of the audio that were attenuated by the pre empha sis in the base station transmit path RXSENSE Programmable Gain Stage The receive audio enters ANTON at the receive input port The signal first passes through an anti aliasing filter and is then routed to the RXSENSE programmable gain stage This gain stage is provided to trim out the tolerances between the dis criminator output and the expander input The RXSENSE gain stage has a nominal gain of 8 dB and can be adjusted 6 4 6 0 dB in steps of 0 4 dB Test mode 10 RX Sensitivity can be used to update this gain stage This stage is used to adjust the AFMS level to 25 mVrms with a 1 kHz tone at 2 3 kHz deviation and no
67. a into the phone Check the function of the phone and if necessary align as described next in Fault Finding and Alignment Service Instructions Fault Finding and Alignment 10 The table below shows information about test points and test data of the radio and logic audio parts of the board This information will become an aid in testing as well as fault finding In general the following procedure can be used 1 Align the boards in the sequence stated below 2 If aspecific value cannot be obtained use the tools mentioned in step 3 below to trace the reason 3 The built in Test Program will provide access to the function or signal to become investigated and any signal data that may be required is found in the section Connectors and Signals where the distribution of signals at the respective con nector pins is found The telephone is tested unless otherwise explicitly stated with DC power 6 2V supplied via a dummy battery Channel 1 TP 1 1 RX 935 0125MHz TX 890 0125MHz RF Power Off TP 2 8 AFC Active TP 15 2 Audio Switches On TP 20 3 TX amp RX audio paths unmuted SAT Tone Off TP 22 3 Manchester Out Off TP 23 0 Volume 4 TP 25 4 mid range TX Source ATMS TP 27 0 Earpiece External TP 28 2 Compandor Disabled TP 29 0 disabled Softlimiter Off TP 32 0 Green LED Off TP 41 MENU 4 0 Red LED Off TP 41 MENU 5 0 ICTRL Off TP 41 MENU 2 0 Il
68. ails of the different entries are given in Using the Menus Below is a brief description of the main events After selection of the COM port the Subscriber Data editing window is automati cally displayed Most customers will require data to be entered in this window only Move the cursor by the arrow keys of the PC or click the mouse on the respective field of the window Press the Esc key to return to the main menu on the top row of the screen L SUBSCRIBER DATA Subscriber No partl Subscriber No part2 Mobile Stat Id No 56 ACCOLC Home Traffic AID Guarantee Start mmyy Guarantee Length min Lock Code The service program will fetch today s date from the system clock of the Check and if necessary correct the date before starting the programming When ready to program the telephone i e transfer data into the EEPROM e Press F2 while keeping the ALT key depressed ALT F2 Confirm by pressing the Y key After the programming the result can be verified by pressing ALT F3 To exit the program press ALT X Using the Menus How to Select Press Esc to reach the menu From a Data edit window it is also possible to go directly to a sub menu by holding down the ALT key and pressing the highlighted letter in the main menu e g ALT F to go to File functions Move the selection bar reverse video to the left or right by the keypad arrow keys to sel
69. alue is echoed M S stores the value Sets the TX audio paths in the audio circuit Also possible to adjust the levels of the different audio paths 0 external line input ATMS default 1 internal MIC 2 internal MIC with MicAmp gain M enables calibration and echoes the initial value increases decreases the value by 1 new value is echoed 8 stores the value Sets the earpiece mute switch in the audio circuit to allow for adjustment of the earpiece sensitivity values 0 internal earpiece disconnected 1 internal earpiece connected 2 audio sent out AFMS on system connector default internal earpiece and AFMS can both be adjusted M enables calibration and echoes the initial value increases decreases the value by 1 new value is echoed 8 stores the value Selects compander or linear mode M displays the current compander settings M 0 linear mode default M 1 companding mode 11 Test Service Programs 12 30 HF 32 SOFTLIMIT 35 COUNTRY 36 BER 37 OMC 38 ADC 39 DAC 40 INPORT Controls the handsfree attenuation level for RX and TX audio M 0 selects RX handsfree audio gain settings and echoes initial gain settings M 1 selects TX handsfree audio gain settings and echoes initial gain settings 0 7 sets the gain for the selected path 0 0dB 1 7dB 2 14dB 7 49dB Sets the use of the softlimiter in the audio circuit Changes made are temporary and will not update the EEPROM Factory an
70. as EXTAUD external audio control and MUTEINV inverted mute are derived from logical gates controlled by the signals PORTHF portable handsfree DV data voice and HOOKSNS hook sense External Audio Control The EXTAUD external audio control signal informs the phone when an accessory which is using the two external audio signals AFMS and ATMS has been connected to the HandsFree Unit Music Mute Control An optional Music Mute unit can be supplied with 12V from the vehicle battery The Music Mute function is controlled from the phone by the MUTE signal which is 29 Accessories 30 inverted by an open collector transistor before becoming available at two of the con nectors Power Supply The Handsfree Unit is able to deliver power to the phone for operation and battery charging by regulating the 12V of the vehicle battery to a constant current supply of max 850mA and less than 1mA during stand by Phone Operation The power consumption of the phone in different situations e g in stand by or in transmission is entirely controlled by the phone itself as these power levels are pro grammed and stored in the phone Battery Charger As the phone battery at all times is provided with current from the HandsFree Unit the charging of the battery incl trickle charging is controlled by the phone itself For more information regarding the battery charging algorithms of the telephone refer to section 2 Technical Descr
71. ator is included in ANTON to provide a reset signal to GUSTAV when the regulated voltage drops below approximately 3 3 V This circuit is enabled at power up and can be disabled by software to save a small portion of current in standby mode 31 Technical Description 32 RX and TX Sat Circuits RX SAT Filter A 6 kHz bandpass filter is included to capture the received SAT tone from the com posite received audio signal RX SAT Schmit Trigger The filtered SAT signal is then amplified and routed to a schmit trigger circuit in ANTON where it is squared up and driven to GUSTAV as a digital signal TX SAT Filter The TX SAT signal originates in GUSTAV as a digital signal The TX SAT filter is a 6 kHz bandpass filter for removal of high order harmonics from the signal TX SATDEV Programmable Gain Stage A programmable gain stage SATDEV is provided to adjust tolerances in the sum ming circuit to maintain the proper signal level to transmit a 6 KHz SAT tone at 1 7 kHz FM deviation This gain stage is nominally 0 dB with an adjustment range of 4 8 to 4 5 dB in steps of 0 3 dB Test mode 22 can be used to adjust SATDEV 8Kbit s Manchester Data Circuit Data Filter A 20 kHz lowpass filter is provided to limit the frequency components of the digit ally generated Manchester data Data is transmitted as an 8 KHz signal at 6 2 KHz FM deviation DATADEV Programmable Gain Stage The filtered data signal is routed to a programmable ga
72. ber of programmable parameters available in Quick NAM Programming is defined as earlier described in ETACS Service Program NAM amp Quick NAM The parameters below are the available Quick NAM Programmable Parameters as set by default Programmable Parameters Electrical Serial Number ESN The ESN which is a unique binary number that identifies the MS to the cellular sys tem is set by the factory and can not be modified Subscription with Charge Rate This parameter determines whether AirTime CallCharge is selectable by the user Country International Prefix Prefix required when dialing an international call This parameter detects an international call at call restrictions International Mobile Station Identity IMSI This IMSI identity is a 10 digit number composed of three parts MNC Mobile Network Code 3 digits MCC Mobile Country Code 1 digit MSIN Mobile Station Identification Number 6 digits Subscriber Number The subscriber number may include from 0 up to 10 digits Home System Identity Number AID This identity number states the subscriber home system and is provided by the sub scription operator Programming Instructions Test Service Programs To enter the Quick NAM Programming mode press 9 8 7 MENU MENU or keep the MENU key depressed while pressing 9 8 7 By scrolling forward T or backwards 4 all NAMs will be reached NOTE Due to the limited amount of display characte
73. cal Description Mechanical Design The phone is designed as a brick with a mechanical assembly consisting mainly of plastic front cover plastic rear cover plastic flip keyboard system connector LCD light guide metallic plastic for PCB shielding It has been designed for easy assembly with 6 screws An optional clip can be mounted into the rear cover Figure 5 Mechanical Assembly 11 Technical Description Man Machine Interface MMI 12 Keypad The keypad has back lighting that makes it possible to operate the station in the dark The back lighting function on 10sec on 20sec off is selected by the user Note that the EVD PWR NO key is not part of the keyboard scanning matrix It is connected to the 3 8V regulators enable inputs so that the power of GUSTAV is forced On when this key is held down The volume keys are not located on the keypad They are push button switches mounted on the upper left hand side of the phone Display The segmented LCD contains one row of 10 alpha numeric characters and one row of icons The software for driving the display is contained in the Flash EPROM An elastomeric connector joins the PCB to the transparent conductive tracks on the LCD module Acoustic Signals The acoustic signals are generated by a buzzer in the transceiver The acoustic level as well as the frequency of the signal is variable in order to distinguish between dif ferent situations The
74. calibration of VCTCXO factory and level 5 repair only sets audio paths in audio circuits sets audio paths in handset controls SAT tone switch and TX SAT deviation controls wideband data and deviation displays latest received data from base station sets earpiece and loudspeaker volume DTMF tones sets TX audio paths in audio circuit sets earpiece mute switch in audio circuit selects compander linear mode controls handsfree attenuation level for RX and TX audio sets use of softlimiter in audio circuit factory and level 5 repair only factory and level 5 repair only factory and level 5 repair only displays different hex values from ADC changes temporarily output voltage from DAC shows status of different inports 15 Test Service Programs Menu 41 OUTPORTS 42 DISCR 43 BAR 45 LCD 46 PWR DOWN 47 SW REV 48 SYNTH 49 RX PWR MODE 50 GUARANTEE 53 SYNTISET 54 EEPROM INIT 60 SYNTH 61 AUDIO CIRCUIT 62 RADIO CTRL 74 TCA TEST 76 BATT SAVE 77 EEDATA 79 PIN 91 EEPROM DUMP 92 EEPROM LOAD 96 COLD START 97 FLASH CHSUM 98 ERROR 99 EXIT Possible Values selects status of selected outport turns discriminator multiplier on off tests different tones of phone tests different segments and icons of display factory and level 5 repair only displays software revision and ESN inside terminal factory and level 5 repair only factory and level 5 repair only warranty information factory and level 5 repair only fa
75. ce microphone and flip removable battery removable antenna Ericsson 2 ERICSSON 2 Figure 1 The Ericsson Mobile Phone EF738 Technical Description Basic Building Blocks The diagram below shows the basic building blocks Figure 2 Basic Building Blocks Technical Description Transceiver Block Diagram The transceiver transmitter receiver consist of a digital part that controls and supervises transmission reception on the radio channel It also handles keyboard display and protocol transmission to the MTX Mobile Telephone eXchange The audio part controls audio signals for earphone microphone and modem TRANSMITTER FREQ GENERATOR MOD RECEIVER CPU MEMORIES On Off control bus gt KEYPAD DISPLAY AUDIO PROCESSING MICRO LOUDSPKR FOHOMZZOO Figure 3 Transceiver Block Diagram Technical Description 10 PCB The printed circuit board is a 6 layer PCB where all components are located in layer 1 primary side and layer 6 secondary side Layers 2 and 5 are ground planes and layers 3 and 4 are used for signal conducting Primary Side Secondary Side DUPLEXER En RECEIVER vco TRANSMITTER MALIN IF PART VCTCXO BAT CON BERT INDY ANTON KEYPAD GUSTAV EE FLASH PROM SYSTEM CONNECTOR SYSTEM CONNECTOR Figure 4 PCB LayOut Techni
76. charge switch control and analog outputs corresponding to charger current and battery voltage These outputs are connected to BERTIND Y s AID inputs GUSTAV turns on the charge switch using a current control output port which is connected to an input of MIA If the battery voltage is less than 8 0V the current control port controls the on off state of the FET switch If the battery voltage is greater than 8 0V MIA keeps the charge switch off regardless of the state of the current control port 21 Technical Description 22 Transient ESD Protection Diodes are used for ESD protection on the System Connector outputs The inputs have got resistors between the System Connector and the ASIC input ports Capaci tors on DCIO prevent spikes caused by charger cable inductance when the charge switch is turned off They also protect MIA and the FET switch from ESD and pro vide de coupling for voltage ripple A capacitor and a varistor provide de coupling and high voltage ESD protection on the battery voltage Off Current Draw The current draw when the phone is off should be as low as possible in order to pre vent low batteries from being too heavily discharged The only components directly connected to the battery which may draw current when the phone is off are MIA a low voltage detector and the regulators Technical Description User Interface Illumination The phone is illuminated with 14 SMD LED s 4 for the display and 10 for t
77. clude a DSP digital signal processor as the CPU Central Processing Unit of the telephone handles the handsfree switching The handsfree function is semi duplex which only permits one party to talk at a time while the other party is switched off to avoid feedback When the land side party is talking a comfort noise is added to simulate the background noise heard from the mobile 27 Accessories 28 HandsFree Components Cradle The cradle consists of two sub units the Cradle Attachment and the Holder Holder Cradle Attachment The Cradle is equipped with a slide joint which is adjusted during the installation to a suitable vertical and horizontal angle for easy reach of the phone The snap click in Holder connects the phone to the HandsFree Unit Stick On Microphone The Stick On Microphone included in the kit is a unidirectional microphone to be mounted in a fixed position in the vehicle and connected to the HandsFree Unit External Speaker Unless an optional Music Mute unit is utilised the 40 External Speaker has to be connected to the speaker amplifier output of the HandsFree Unit HandsFree Unit The HandsFree Unit includes the following electronic blocks Microphone Amplifier e Speaker Amplifier Modem Handset Option Audio Switch Control External Audio Control Music Mute Control Power Supply Accessories Microphone Amplifier The Microphone Amplifier has got two individual inputs
78. control block WatchDog On Off The Watchdog On Off block in GUSTAV contains the watchdog block and the Autonomous Time Out ATO block This block consists of a four second counter which when overflown activates a reset circuit and generates a 100ms reset The ATO is a supervising block that monitors the status of the received carrier detect and the transmitter power If the transmitted power is detected without the received carrier detect for 30 seconds the ATO initiates a hardware turn off of the phone IFC The IFC counter is used to count a predetermined number of periods of the IF from the radio interface LSI BAR The output from the bar generator is a continuous pulse train with program control led ON and OFF time This makes it possible to vary signal parameters such as tone frequency signal period signal on time volume Clock Generator The processor clock is generated from an external signal or crystal An 8 064 MHz clock gives a system clock frequency of 1 008 MHz or 2 016 MHz in Turbo mode The serial interface clock will always be 1 008 MHz The clock generator block has many divider steps to generate all clock frequencies that are required inside GUSTAV and on the logic PCB 25 Technical Description 26 Internal Ports There are three 8 bit read and three 8 bit write ports in this block that are used within GUSTAV Modem The modem part supports two different cellular systems AMPS and T
79. ctory and level 5 repair only factory and level 5 repair only factory and level 5 repair only factory and level 5 repair only checks ETACS combining algorithm controls reduced and extra power functions factory and level 5 repair only factory and level 5 repair only factory and level 5 repair only factory and level 5 repair only powers up in terminal charge only mode calculates checksum of flash memory factory and level 5 repair only press to exit service program Test Service Programs ETACS Service Program The ETACS Service Program is a tool used for entering the initializing customer parameters into the EEPROM of the Ericsson mobile phone EF738 This description of the ETACS Service Program includes information on hardware requirements software setup programming instructions Hardware Requirements The following equipment is required when using the ETACS Service program for the EF738 Ericsson mobile phone PC with Windows 3 1 or Windows 95 operating system COM port COMI COM available on the PC e Programming cable KRY 101 1135 10 RIA Programming interface NTZ 112 311 Adapter 25 to 9 pin for PC equipped with a 9 pin COM connector not supplied by Ericsson Fully charged NTZ 112 311 battery eS mh N KRY 101 1135 10 R1A
80. d if the file name is other than TYPE1361 CNF Default name is STATIONI SAV Reloads a configuration file Resets the PIN to 0000 Activates the Discontinuous Reception feature CAUTION May deteriorate the performance of the phone if DRX is not supported by the system Deactivates the Discontinuous Reception feature Quit the program Test Service Programs Edit When leaving the File menu the Subscriber Data edit window is displayed After pressing Esc the Edit sub menu is reached and the editing windows listed below can be accessed Subscriber Data Misc MMI Features Sounds amp General Call Set amp CallData System amp Services Sys Opt amp Restrict Languages NAM amp Quick NAM Country data Country data Country data Country data ONP SUBSCRIBER DATA L SUBSCRIBER DATA Subscriber No partl Subscriber No part2 Mobile Stat Id No ACCOLC i Home Traffic AID Guarantee Start mmyy Guarantee Length mm Lock Code Oey D O NW OY C OD Ww OFF OU Choo NI Subscriber No Part 1 Part 2 The Subscriber No shown in certain menues and at power on is information intended for the user and is not used by the system Mobile Station Identification No The 6 least significant digits of the international mobile station number usually identical to the 6 least significant digits of the subscriber number ACCOLC Th
81. d level 5 repair only Factory and level 5 repair only Factory and level 5 repair only Displays the different hex values from the ADC M 1 RSSI M 2 battery voltage M 3 unused M 4 temperature sense M 5 bandgap reference M 6 current sense M 7 handsfree level Changes temporarily the output voltage from the DAC M 1 normally controlled by AFC M 2 normally trimmed using MENU 18 M 3 power level xxx M decimal value followed by MENU sent directly to the active DAC valid values 000 255 increases decreases value by 1 new value is echoed Shows the status of the different inports updated every second M 1 external audio connection detected 0 input high 1 input low M 2 state of CPU port 2 M 3 flip status 0 flip closed 1 flip open M 4 transmitter status 0 transmitter off 1 transmitter on M 6 external handsfree detected 0 input low 1 input high M 7 receiver carrier detect 0 RSSI lt sensitivity limit 1 RSSI gt sensitivity limit immediately reads the selected port 41 OUTPORTS 42 DSCR 43 BAR 45 LCD 46 PWRDOWN 47 SW REV 48 SYNTH 49 RX PWR MODE Test Service Programs Shows the status of the selected outport First select a digital outport M 1 0 VRX M 1 1 VTX Note VRX must be on M 1 2 power down VCO M 1 3 unused M 1 4 SWDC M 1 5 MPD2 M 1 6 FMPDI M 1 7 unused M 1 8 temperature M 2 ICTRL M 3 MUTE M 4 green LED M 5 red LED M 6 back light Th
82. d of the useable range is controlled primarily by the RF IF gain of the receiver while the upper end of the RSSI voltage is controlled by the supply voltage of the IF AF chip 15 Technical Description 16 Synthesizer A 900 MHz RX synthesizer is used as first LO The TX synthesizer is modulated and working at a fixed frequency of 90 MHz The TX frequency is obtained by mix ing the frequencies from the two synthesizers The main synthesizer uses fractional N to achieve lower phase noise and faster switching In most applications the phase noise is proportional to the overall divi sion ratio and since fractional N uses a higher comparison frequency the phase noise will be lower The auxiliary synthesizer is a conventional loop without fractional N and the com parison frequency is 75 KHz The RX VCO is a module which operates between 914 040 MHz and 938 970 MHz The MALIN chip contains the TX VCO TX buffer stage TX mixer RX buffer stage and the RX prescaler The TX PLL RX PLL and the lock detect logic are part of the BERTINDY chip Programming The name of the PLL circuit is BERTINDY which is a combination of the two chips Bertram and Cindy A three line bus is used to program the synthesizer with the help of a clock frequency The RX synthesizer is operating at 45 MHz above the required RX frequency and a 14 85 MHz reference frequency is used Power The synthesizer part in BERTINDY is put in power down mode by sending
83. e The four main components are Cradle Stick on Microphone External Speaker HandsFree Unit HandsFree Features After placing the telephone in the HF7600 holder all handsfree functions are con trolled by the DSP Digital Signal Processor and its peripherals located in the HandsFree Unit The handsfree communication is full duplex i e both parties will be able to talk simultaneously Some attentuation can however be noticed on the land side during simultaneous talking while both speech channels will be open on the mobile side all the time 35 Accessories 36 Echo Cancellation To avoid acoustic feedback in a full duplex handsfree system i e prevent the speaker sound being picked up by the microphone from becoming amplified the DSP has to suppress these signals by Echo Cancellation The DSP will be able to distinguish transmitted speech from received echoed speech if it is informed about the acoustic environment of that particular vehicle where the handsfree kit is installed This is automatically done by an adaptive training sequence which is being continuously updated Noise Reduction The ambient noise of a driven vehicle is often too loud to allow an acceptable speech quality when using handsfree The DSP is however able to separate this noise from the speech and reduce it to an acceptable level HandsFree Components Cradle The Cradle consists of two sub units the Cradle Attachment and the Hold
84. e Access Overload Class is normally the second last digit of the Mobile Station Identification No Home Traffic AID The Home Traffic Area Identification is entered as a hexadecimal code Guarantee Start mmyy Is read from the PC s system clock at program start but can be manually altered Guarantee Length mm To be used in conjunction with the Guarantee Start Lock Code The subscriber s four digit lock code which must initially be set to 0000 to comply with the information of the User s Manual 21 Test Service Programs 22 MISCELLANEOUS MMI FEATURES MISC MMI FEATURES Roam indicat type IM Auto Retr Y Call Count Feature Y Arrow Indication 1 Left Arrow Segments 22C0 Right Arrow Segments 0251 Int lock digits 0A Three level menu Y Roaming Indicator Type Y Icon flashing N Icon steady on Auto Retry Y Enables Automatic Retry when network is busy N Disables Automatic Retry when network is busy Call Count Feature Y Enables registration of unanswered incoming calls N Disables registration of unanswered incoming calls Arrow Indication 0 no arrow is displayed 1 one arrow is displayed 2 one arrow followed by hyphen is displayed Left Arrow Segments Layout of Left Arrow Segments 22COpgx not to be changed Right Arrow Segments Layout of Right Arrow Segments 0251 ggx not to be changed International Lock Digits No of digits as hex code to define the
85. e Bandpass Filter 27 Expandor Gain 28 RX HF Attenuation 28 RX Volume Control 28 EARSENS Programmable Gain Stage 28 Externally Programmable Gain Stage 28 Earpiece Driver 29 AFMS 29 Transmit Audio Circuit Description 29 ATMS 29 Microphone Input 29 Soft Limit 30 INPSENSE Programmable Gain Stage 30 Transmit Bandpass Filter 30 TX HF Attenuator 30 Compressor 30 Pre emphasis 30 Hard Limit 31 Transmit Lowpass Filter 31 AUDIODEV Programmable Gain Stage 31 Summing Amplifier 31 TXSENSE Programmable Gain Stage 31 Low Voltage Detect Circuit 31 Continued on next page Technical Description RX and TX Sat Circuits 32 RX SAT Filter 32 RX SAT Schmit Trigger 32 TX SAT Filter 32 TX SATDEV Programmable Gain Stage 32 8Kbit s Manchester Data Circuit 32 Data Filter 32 DATADEV Programmable Gain Stage 32 HandsFree Circuit 32 Software Design 33 Power Down Control 33 Timing and Operation 33 Main Modes of Operation 33 Power Saving Sleep Function 33 Software Assignments 33 Technical Specifications _ 222234 General ___ 34 Transmitter __ 34 34 Technical Description Technical Description Overview The Ericsson EF738 Mobile Phone is a small lightweight phone operating at 3 8V Itis a class 4 cellular telephone that is fully compatible with the ETACS system with extended frequencies The EF736 includes the following three exterior parts telephone section incl keypad character display earpie
86. e Lighter Adaptor Power Plug Input Voltage Output Voltage Current 402 0035 96 x 28 x 25 mm 3 8 x 1 1 x 1 0 in 24 x 11 x 11 mm 0 9 x 0 4 x 0 4 in 10 8 31 2 Vpc 7 6V pc 600mA 15 Accessories 16 Accessories DeskTop Charger MC7000 Introduction The DeskTop Charger MC7000 is a dual desk charger specially designed for the 7X8 family telephones The phone is placed in the front slot for simultaneous pow ering and battery charging while the spare battery to be charged is placed in the rear slot which also features a manual discharge reconditioning facility As the MC7000 does not include an internal power supply an external power source has to be connected to the system bus connector at the rear of the unit The external power source should be one of the following Ericsson product Rapid Charger e Travel Charger e Vehicle Power Charger Furthermore the Portable HandsFree as well as Mobile Office equipment can be connected to the DeskTop Charger MC7000 17 Accessories 18 Electronics The electronics of the MC7000 is designed around the Central Processing Unit Central Processing Unit The Central Processing Unit CPU is equipped with 4kbyte ROM thus making it possible to control the entire MC7000 charger The supply voltage to the CPU is 3 8V which is being derived from a linear volt age regulator and a crystal generates a 5MHz clock frequency to the oscillator input of the CPU The Cen
87. e is programmable in 0 4 dB steps from 2 8 to 3 2 dBs Test Mode 28 Earpiece is used to trim this stage Externally Programmable Gain Stage An inverting amplifier follows the EARSENSE stage The input and feedback ele ments are external to allow for external programming of gain and filtering This stage is bypassed when the earpiece drivers are put in external mode Technical Description Earpiece Driver The earpiece driver is composed of a differential pair a non inverting amplifier and an inverting amplifier The drivers can be software configured in four modes single ended differential external e muted A resistor is added in series with the earpiece as a pad to limit the maximum acous tic level to 103 dBspl The gains in the ASIC are set to force the signal into clipping at maximum deviation and maximum volume and the excess amplitude is divided down between the resistor and the earpiece AFMS The inverting earpiece amp is used to generate the AFMS signal The signal is AC coupled to reduce popping when connecting a portable handsfree unit Transmit Audio Circuit Description ATMS The ATMS signal is AC coupled to the transmit audio path via a capacitor and is then reduced by 2 dB and biased to a voltage A switch to this voltage is also con nected to the output of the ATMS port to provide a bias for the portable handsfree microphone This switch is controlled by the microprocessor but can be contro
88. e of information The mobile telephone has a systems section where the frames are coded and decoded The transmission is performed by means of FSK Frequency Shift Key modulation where a logic is represented by a constant frequency above the carrier frequency of the transmitter A logic 0 is represented by a constant frequency below the carrier frequency The speed of transmission is 8 kbits s System Introduction Frequency Tables A mobile telephone for the ETACS system operates in full duplex and provides 1320 channels with a channel spacing of 25kHz 0 025MHz and a duplex separa tion of 45MHz The 900MHz band has been divided into an upper and a lowerband The lower sub band 872 0125 904 9875M Hz covers the 1320 transmitting channels in the hand held telephone while the upper sub band 917 0125 949 9875MHz covers the corresponding 1320 receiving channels The channels are numbered from 1329 to 2047 and from 0 to 600 The following formulas can be used to calculate the frequencies f MHz associated with a certain channel number N channel number Frequencies channels 1329 2047 see table 1 f 872 0125 N 1329 x 0 025 MHz fe 917 0125 N 1329 x 0 025 MHz Frequencies channels 0 600 see table 2 f 889 0875 N x 0 025 MHz RR 934 9875 N x 0 025 MHz 11 System Introduction Table 1 Channels 1329 2047 Channels 1329 1478 Ch Tx Rx Ch Tx Rx Ch Tx Rx 1329 872 0125 917 0125 1379 873 2625 9
89. e safety timer is used as a last resort when the above methods fail Trickle Charging When the main charging is completed an 8mA trickle charging generated by short pulses is automatically initiated but only in case the front slot is empty Discharging After pressing the discharge button the spare battery is discharged by a 200mA cur rent Charging will commence when the battery voltage has dropped to 4 0V 21 Accessories Error D etection An error is indicated and charging is halted for 20 minutes when the ambient tem perature is higher than 35 C LED Indicators Front Indicator Phone Slot Status Significance Detection Off No phone Front Voltage Monitor or Phone On Off Status Red Charging Supply Current Monitor gt 200mA Green Charging complete Supply Current Monitor lt 200mA Rear Indicator Spare Battery Slot Status Significanse Detection Off No battery Rear Voltage Monitor Red Charging Rear Voltage Monitor Green Charging complete Rear Voltage Monitor Yellow Discharging Discharge Switch Red flash Temperature error Temperature Guard Specifications Battery type Charging time Front Charging time Rear NiMH 650mAh Ih50min 1h25min Type No 402 0040 BV 402 0040 UK Dimensions 73 x 90 x 47 mm 2 9 x 3 5x 1 9 in Input voltage 7 10 Vpc Ambient temp 5
90. e upper right corner hole in the board Tighten the screw with a screwdriver 0 15Nm Drop an antenna connector 7 into the placement cavity of the antenna connec tor placement guide Ensure that the locating posts of the antenna connector are positioned in the mat ing holes of the board Drop a screw 6 into the screw hole in the antenna connector Tighten the screw with a scredriver 0 15Nm Mount the back cover 13 on the front cover 12 Hold down the lower part of the back cover against the front cover and press the upper part of the phone together Drop the four screws 14 into the holes on the back cover Tighten the screws with a screwdriver 0 15 Nm Mount the antenna by screwing it clockwise into the thread Insert the battery pack into the phone and push until a click is heard Service Instructions Flip Mount Inspection After mounting the flip Hold the telephone upside down and check that the flip is not open The flip must be closed as shown in fig not open as shown in fig 2 Fig 1 Flip Closed Fig 2 Flip Open Warranty Seal Place the warranty seal over the right hand torx screw at the bottom Service Instructions Exchanging the Circuit Board N Transfer the contents of the phone to the PC as described in section 3 Test Service Programs Disassemble as previously described in this section Exchange the board Reload the EEPROM customer dat
91. ea is called an MSC service area The number of MSCs varies from one country to another depending on traffic den sity the number of base stations and so on Each MSC handles calls from one serv ice area which in turn is divided into radio zones A service area consists of a number of radio zones or cells each of which is serviced by a base station _ N Service area VVVA Figure 1 Basic Units in the Mobile Telephone System System Introduction Base Station and Cell A base station is able to communicate with any mobile telephone within a certain area close to it This area is called a cell The base station contains channel units Each channel unit is equipped with a radio transmitter a radio receiver and a control unit The control unit is used for data communication with the MSC and for data signalling with the mobile telephones on the radio path A channel uses two separate radio frequencies one for transmission by the mobile telephone and one for transmission by the base station Such a chan nel is called a duplex channel The distance between these two frequencies the duplex distance is always the same and is 45 MHz A Radiosignals Data Tx Transmitter Rx Receiver Cu Control Unit Figure 2 Channel Unit All base stations within a service area are connected to the MSC via dedicated l
92. ect a sub menu and press Enter to open it The functions in the sub menu are selected by moving the selection bar up or down using the arrow keys Press Enter to activate the selected function or Esc to return to the main menu Sub menus and functions can also be reached by clicking with the mouse 19 Test Service Programs 20 The Functions NOTE Defaults are printed in italic File The File sub menu includes the functions listed below Read Alt Fl Burn Alt F2 Verify Alt F3 Save Alt F5 Load Alt F6 Reset PIN Alt F7 Activate DRX Alt F8 Deactiv DRX Alt F9 EXit Alt X Read Burn Verify Save Load Reset PIN Activate DRX Deactivate DRX Exit Transfers the contents of the EEPROM to the computer memory CAUTION When using this function make sure to reload the configuration file before programming other phones as incor rect data inadvertently might be programmed Programs the phone with the Subscriber Country and System data that has been entered into the PC memory Comparison between the PC memory and the phone This command has two different functions 1 Creates a configuration file which is automatically loaded at each program start The file name must be manually changed to TYPE1361 CNF All data from the edit windows are saved Guarantee Start is set to today s date by the system clock 2 Saves the data in the phone before service Data in the edit windows is save
93. ection transmission power identification of sender and receiver start and ter mination of call and so on The information enables the exchange that holds the subscriber registered to follow the movements of the mobile telephone Should the subscriber s unit come into the control area of a different exchange this exchange will immediately report the new location to the home exchange When a mobile telephone approaches the limit of the system s coverage or when neighbouring base stations cannot offer a free channel conversation shall continue on the active channel until reception quality gets below a specified level The channels of the system are automatically scanned and analyzed with regard to channel number voice channel control channel and service area Normally the mobile telephone is locked on a control channel in the service area where it is located If the telephone becomes unlocked it will immediately start scanning for another control channel Each base station sends a search signal over the control channel When a call is made to a mobile telephone the setup information will be transmitted over this con trol channel Once the mobile telephone has responded to the call the base station searches for a free voice channel and orders the mobile to switch to the chosen voice channel after which the mobile subscriber will hear a ringing signal on the mobile telephone The entire conversation between the two subscribers takes place o
94. ed SURREY ANTENNA CABLE ANTENNA ADAPTER RF IN OUT lt co lt m m gt Test Service Programs Other Equipment Equipment Ordering Number ETACS Service Program Programming Interface NTZ 112 311 Connection Cable KRY 101 1135 10 Adapter LPC 102 280 Car Cradle KRY 109 1001 72 Test Handset NTZ 112 210 Antenna Cable NTZ 112 294 Antenna Cable Adapter RNT 403 012 003 Dummy Battery NTZ 112 310 Service Adapter Kit Test Interface Box LPC 102 280 Audio Box KRY 101 1612 51 Power Supply 110V KRY 101 1612 54 Power Supply 220V KRY 101 1612 55 Standard tools and soldering equipment must also available Note When servicing mobile telephones it is most important that a bench earthing network is used to protect sensitive components against electrostatic discharge ESD Test Service Programs Test Program How to Use This document will describe the use of the built in test program for the EF738 After the more extensive descriptions found in ndividual Test Options an overview follows in the form of a table with data referring to the different options This table will become a handy alternative after having some experience of the test program Initiating the Test Program The test program is initiated from the special
95. en select the state 0 set output low 1 set output high Turns the discriminator and multiplier on and off 0 discriminator off 1 discriminator on default Tests the different tones of the phone continous ringing signal at maximum volume continuos alarm signal click signal single pulse error signal single pulse continuous 3kHz ringing tone Q Tests the different segment and icons of the display as five dif ferent patterns M digit 1 5 shows the selected pattern no 1 5 shows all patterns continuously starting with pattern no 1 CorS terminates the test Factory and level 5 repair only Displays the software revision and ESN inside the terminal Press any key to show software name and revision Additional pressure of any key will show the ESN Factory and level 5 repair only Factory and level 5 repair only 50 GUARANTEE Press any key to display year and month when warranty guaran 53 SYNT I SET 54 EEPROM INIT tee was activated and the length months of the warranty period Factory and level 5 repair only Factory and level 5 repair only 13 Test Service Programs 14 60 SYNTH Factory and level 5 repair only 61 AUDIO Factory and level 5 repair only CIRCUIT 62 RADIO CTRL Factory and level 5 repair only 74 TCA TEST Checks the ETACS combining algorithm 76 BATT SAVE Controls the reduced and extra power functions 0 off 1 power reduction invoice channel power level 2 only 2 extra pow
96. ensation no smooth no compensation Q D Test Service Programs 18 DAC2CAL 19 RX SAT 20 AUDIO 21 HANDSET 22 TX SAT 10 B AFC state 1 waiting for signal no valid RSSI compensate for temp or temp age 2 acquiring lock RSSI good use whole freq error for 1 5 sec for fast lock 3 locked RSSI good use smoothed freq compensation 4 freeze lock RSSI temporarily lost compensate for temp age frozen freq error for up to 30 sec 5 locked using short count RSSI good use smoothed freqcompensation only entered when current savings is active short freq measurements is used to find freq error com pensation 6 entered when DRX has started compensate for temp age frozen freq error CC total compensation DD temperature table component EE age component FF frequency error component Calibration of the VCTCXO M enables calibration and echoes the initial value increases decreases the value by 1 new value is echoed M S stores the current value During the calibration the AFC is in Temperature only compen sation mode Tp 15 0 Upon exiting the calibration the AFC returns to its previously selected operating mode Factory and level 5 repair only Sets the audio paths in the audio circuit Key Tx audio RX audio 0 muted muted 1 unmuted muted 2 muted unmuted 3 unmuted unmuted Sets the audio paths in the handset 0 microphone off earphone off loudspeaker off
97. er Holder Cradle Attachment The Cradle is equipped with a slide joint which is adjusted during the installation to a suitable vertical and horizontal angle for easy reach of the phone The snap click in Holder connects the phone to the HandsFree Unit Stick On Microphone The Stick On Microphone included in the kit is a unidirectional microphone to be mounted in a fixed position in the vehicle and connected to the HandsFree Unit Accessories External Speaker Unless an optional Music Mute unit is utilised the 4 2 External Speaker has to be connected to the speaker amplifier output of the HandsFree Unit Handsfree Unit The Handsfree Unit includes the following electronic blocks Digital Signal Processor DSP e Audio To Mobile Station e Audio From Mobile Station Microphone Amplifier e Speaker Amplifier Music Mute Control Power Supply Digital Signal Processor DSP The main functions of the Digital Signal Processor are to reduce the ambient audible noise and to suppress the speaker sound after being picked up by the microphone so called echo cancellation The circuitry around the DSP includes memories like ROM EEPROM and SRAMs Audio To Mobile Station The digital output from the DSP is D A converted and amplified by the Audio To Mobile Station block The audio signal passes through an analog multiplexer and a latch when enabled which occurs when the signal MUTE from the phone goes high i e whe
98. er power level 2 only 77 EEDATA Factory and level 5 repair only 79 PIN Factory and level 5 repair only 91 EEPROM Factory and level 5 repair only DUMP 92 EEPROM Factory and level 5 repair only LOAD 96 COLD START Clears the RAM exits service amp test mode and powers up in terminal charge only mode exit service amp test mode power up in normal mode M exit service amp test mode power up in charge only mode 97 FLASH Calculates the checksum of the flash memory CHSUM 2 bytes checksum will be displayed 98 ERROR Factory and level 5 repair only 99 EXIT Press to exit the service program Test Service Programs Overview of the Test Program Menu 1 CHNUMBER 2 TX POWER 4 FLASHER 5 PWRCAL 6 TX DETECT 7 TX SENS 9 RF CAL 10 RX SENSE 11 KEYPAD 13 BANDGAP 14 AUDIO DEV 15 AFC 18 DAC2CAL 19 RX SAT 20 AUDIO 21 HANDSET 22 TX SAT 23 MANCH OUT 24 MANCH IN 25 VOLUME 26 DTMF 27 TX SOURCE 28 EARPIECE 29 COMPAND 30 HF 32 SOFTLIMIT 35 COUNTRY 36 BER 37 OMC 38 ADC 39 DAC 40 INPORTS Possible Values 0 600 1329 2047 8 off 2 maximum power only used when loading program into terminal calibration of power levels simple test of transmitter factory and level 5 repair only RSSI calibration adjustment of receiver audio output factory and level 5 repair only factory and level 5 repair only adjustment of maximum audio deviation sets AFC operating mode and displays AFC information
99. er up to 950mA to the phone for operation and battery charging Phone Operation The power consumption of the phone in different situations e g in stand by or in transmission is entirely controlled by the phone itself as these power levels are pro grammed and stored in the phone Battery Charger As the phone battery at all times is provided with current from the HandsFree Unit the charging of the battery incl trickle charging is controlled by the phone itself For more information regarding regarding the battery charging algorithms of the tel ephone refer to section 2 Technical Description subsection Battery Charging Optional Accessories Music Mute An optional Music unit can be connected to the Handsfree Unit and will direct the amplified received audio signal to the car stereo speakers during the handsfree con versation If the car stereo is equipped with a specific mute input the optional Music Mute Cable connected directly between this input and the Handsfree Unit will mute the car stereo during the handsfree conversation Note Max current load at Music Mute output is 200mA Goose Neck Microphone A Goose Neck Microphone allows a more flexible microphone position for improved sound quality incl reduction of transmitted noise Data Extension Data communication using handsfree mode is made possible by connecting a Data Extension Unit between a modem and the Data Communication Connector External
100. ernal 512 byte ROM in GUSTAV which holds a Primitive Interface Program used for code loading into the RAM After a reset the CPU will begin executing the code in IROM If the SERV line is high the ROM code continues to execute otherwise the program code in the external EPROM is started RAM There are 6016 bytes of RAM available in GUSTAV The processor uses this mem ory as working space when the phone is turned on When turned off data that has to be saved will be stored in the EEPROM before turn off Bus Interface The bus interface will provide the data and address lines to the external Flash EPROM and will also handle the internal busses in GUSTAV 24 Technical Description Decoder The decoder in GUSTAV is an address decoder which has outputs for both internal functions and logic control signals such as chip selects CS write W and output enable OE Serial Interface The serial interface in GUSTAV has a transmitter block and a receiver block The transmitter block consists of four write registers a clock divider and other logic for generating interrupts and latch signals Data is transmitted and received via a serial interface data line The receiver block consists of three read registers in which the received data may be read one byte at a time by the processor External Ports This block manages the keyboard along with the handling of binary input output ports where some inputs are connected to the interrupt
101. ethod Radio test set in TX mode Input signal None Measurement point At the antenna connector measured with a deviation meter Limit 6 4kHz 0 5dB 6 021 6 780 kHz Procedure Mute the TX audio path TP 20 0 Activate the TX Data TP 23 1 Turn the transmitter on TP 2 2 Monitor the TX data deviation If the deviation is outside the limits adjust the deviation Enter TP 23 Start the trimming by pressing M Trim TX Data Deviation to 6 021 6 780 kHz by pressing and to increase decrease the deviation Allowed trim values are 2 to 13 Trim step size is 0 4dB per step tA N 9 Press M S to store the value 17 Service Instructions 18 Item 8 AFMS and Harmonic Distortion Purpose Checking and if necessary calibrating the deviation of the receiver Test method Radio test set in RX mode Input signal Apply a 50dBm 935 0125MHz RF signal modulated with a 1kHz tone 2 3kHz deviation to the antenna input Measurement point At the AFMS output from the system connector measured with an AC volt meter Limit 25mV 1 5dB 21 035 29 710 mV Procedure 1 Enable the compandor TP 29 1 2 Apply a 50dBm 935 0125 RF signal modulated with 1kHz tone 2 3kHz deviation to the antenna input Monitor AFMS output with a 100kQ load If AFMS is outside the limits adjust the AFMS level Enter TP 10 Start the trimming by pressing M Trim the AF
102. for the two types of micro phones being available e Stick On microphone standard e Goose Neck microphone optional The microphone signal passes through two amplifier stages which results in a total gain of 31dB and 21dB for the Stick On and Goose Neck microphone resp Speaker Amplifier The AFMS audio from mobile station signal received from the phone is amplified by a programmable gain amplifier and fed to a differential amplifier consisting of four power transistors resulting in a total gain of 21dB To protect the power transis tors and the speaker against high current a feed back signal from the power transis tors to the programmable amp will allow only short peaks of high current to get through but reduce continuous high current to approximately 1 2A corresponding to just about 5W output power Modem Handset Option The Data Communication connector can be utilised for connection of two different options analog PCMCIA modem e external handset When any of these devices is connected the audio signal ATMS Audio To Mobile Station is switched to this connector while AFMS audio from mobile station always is available Note A Data Extension Unit is required for the connection between the optional unit and the Data Communication connector Audio Switch Control The Audio Multiplexer Control is used to switch the audio paths between the exter nal microphone and the modem handset connector Control signals such
103. g a Flasher Program After having the Shell program installed the Flasher programs of various phones based on the same platform are easily added 1 Close all active windows and insert a Flasher disk 2 In the Program Manager window click on File and Run type a setup in the Command Line box and click OK 3 After a while some important information is displayed Read the information and click Next gt 4 The Flasher program suggests a path and subdirectory where the flasher pro gram is placed If convenient click Next gt If not click Browse select a directory path that corresponds with the Shell loca tion register and click Next 5 The copying of files is begun and also displayed by several graphs 6 After completion of the file copying the installation of the Flasher program is ended Confirm the completion by clicking OK in the Information window and remove the disk 7 In the Program Manager a new window EMMA has been created from which the Flasher program now can be opened and started by clicking on the group icon ETACS Flash Test Service Programs Flash Operation Hardware Setup To make the setup for the upgrading of the mobile phones follow the instructions below and refer to Figure 1 1 Connect the programming interface NTZ 112 311 to an available COM port 2 Connect the programming cable KRY 101 1135 10 RIA to the interface 3 Connect a fully charged battery to the phone 4 Connect the
104. g changes to a telephone that has already been programmed first read the EEPROM by pressing ALT F1 Then perform the desired changes and program the EEPROM by pressing ALT F2 Verify by pressing ALT F3 Note Make sure that the configuration file has been reloaded before programming other phones Otherwise incorrect data may inadvertently be programmed Contents of Saved Short Number Files The Save file is a normal text file which may be edited by any word processor or text editor as an ASCII text file It is possible to create a file independently from the program and then use the program for transfer to the telephone The file does not have to list the short numbers in any particular order and it is not necessary to sup ply all 99 numbers For example it is possible to create a file with only three short numbers at pos 21 22 and 23 and add these to a phone that already has some numbers programmed Each line of the file should have the following form 1 Two digits representing the Short Number positions from 01 through 99 2 Name of the subscriber maximum 10 characters letters and digits 3 Telephone number of no more than 16 or 32 characters system dependent Digits 0 9 and are allowed Example 01 ERICSSON 0094646193000 02 JOHN DOE 12345678 03 TRANSFER 21 9171234567 Lines containing the positions only will erase the shortcodes for example 04 05 06 A line containing text only NO NUMBERS
105. gress simultaneously in both directions as it does on an ordinary telephone The duplex separation is the fre quency separation between the transmitter and receiver operating frequencies The 900 MHz band has been divided into an upper and a lower frequency band The lower band 872 0125 904 9875 MHZ contains the mobile telephone transmitter channels and the upper band 917 0125 949 9875 MHz contains the correspond ing mobile telephone receiver channels Transmission Control and Communication The heavy traffic and the many functions applied in the system requires the tele phone exchanges to be program controlled The exchange has to observe which base station is now serving the mobile telephone When the car moves away from the original base station and comes closer to another the exchange must request a switch over to the more favourable station This must occur without interrupting or cancelling the call Switching a call in progress from one base station to another is called Handoff or Handover Before transferring the communication line to a new base station the exchange makes sure that this is really the station that will provide the best conditions for transmission and reception To enable the exchange to supervise transmission as indicated above there is a con tinuous flow of data between the mobile telephones and the exchange via the base stations This information which cannot be heard in the telephone concerns chan nel sel
106. handsfree sense 8 DTMS Data to mobile station 9 DFMS Data from mobile station 10 DGND Digital ground amp DC return Speaker Connector J7 1 LSP Loudspeaker signal LSP Loudspeaker common S n c Speaker connector J7 is female Picture shows corresponding male 42 HandsFree Installation Ericsson Mobile Phone EF738 HandsFree Installation HandsFree Installation Contents Vehicle HandsFree Solutions HF7300 amp HF7600 5 HandsFree Installation HandsFree Installation Vehicle HandsFree Solutions HF7300 amp HF7600 Data Extension External Handset via Data Extension Unit HandsFree Installation Spare Parts Ericsson Mobile Phone EF738 To be distributed by the After Sales organization within the Region Service Messages Ericsson Mobile Phone EF738 To be distributed by the After Sales organization within the Region EF 38 EF 38 EF 38 EF 38 EF 38 EF 738 EF 38 Ericsson Mobile Phone Ericsson Mobile Phone Ericsson Mobile Phone Ericsson Mobile Phone Ericsson Mobile Phone Ericsson Mobile Phone Ericsson Mobile Phone Service Manual Service Manual Service Manual Service Manual Service Manual Service Manual Service Manual
107. he key board The LED s are switched on and off from GUSTAV A voltage regulating cir cuit is included which prevents changes in the battery voltage from affecting the backlighting intensity Buzzer The buzzer which emits the Beep Ring and Alarm signals is an electromagnetic resonance buzzer with a resonance frequency of about 3 KHz The sounds are generated in GUSTAV by software control and then fed to the buzzer LCD Display The display is a 1 row segmented LCD which utilizes chip on glass technology for mounting of the driver chip on the LCD module No negative voltage supply is required for this LCD and no contrast control is needed since the display in EF738 utilizes a technology which provides a wide viewing cone Keypad There is a 5 x 4 keyboard scanning connected to GUSTAV A detection signal is set high when the END PWR NO key is pressed and by looking at a feed back signal GUSTAV is informed and turns the phone on 23 Technical Description Logic Design GUSTAV GUSTAV is a uP ASIC that consists of 15 blocks 6303 e ROM e RAM BusInterface Decoder Serial Interface External Ports Watchdog On Off FC BAR Clock Generator nternal Ports Modem Baud Clock 2C Controller Circuit Description 6303 The processor is an 8 bit processor with an asynchronous full duplex serial commu nication interface DIMS DFMS for external connections ROM There is an int
108. hone and attaching the microphone clip to a suitable part of the clothing the portable handsfree facility is ready to be used Portable HandsFree Features The Portable HandsFree is designed to be used with all phones in the Ericsson 7X8 family The portable handsfree communication is full duplex i e both parties will be able to talk simultaneously 25 Accessories 26 Specifications Type No 502 0013 BV Microphone Characteristics Omnidirectional Sensitivity 43 5dB 3dB rel 1V Pa at 1kHz Impedance lt 2kQ S N ratio gt 35dB Earphone Sensitivity 106dB 250mV at 1kHz Impedance 16Q Connector and Signals PORTHF GND MIC EAR uH Q Portable HF connector Signal direction System connector MIC H ATMS EAR AMS GND GND PORTHF actice LO PORTHF detect Accessories Vehicle HandsFree Solution HF7300 Introduction The Vehicle Handsfree Solution HF7300 is specially designed for the Ericsson 7X8 family telephones and includes apart from the handsfree facilities also a power sup ply for battery charging and phone operation The four main components are Cradle e Stick On Microphone External Speaker Handsfree Unit HandsFree Features The HandsFree Unit does not in
109. ignal to noise ratio is continuously measured by a monitoring signal SAT Supervisory Audio Tone sent out by the base station and returned by the mobile telephone If the base station finds that the signal strength is below a certain value it alerts the exchange The exchange now requests neighbouring base stations to transmit their monitoring signals and measure the signal strength The exchange then decides which base sta tion provides the best conditions and orders the mobile telephone to switch to a channel of this base station instead The mobile sends a signalling tone ST as response or synchronization to the base station for instance during call setup and during handoff System Introduction 10 Data Transmission Many types of signalling are used between the different parts of the ETACS system The signalling has the following main objectives MSC MT setting up and clearing of calls switching of call in progress updating ordering of power reduction MSC BS remote control of base station transmission of alarm MSC MSC updating of subscriber register and roaming register transfer of call to roaming subscriber MSC PSTN setting up of calls e BS MT supervision of transmission quality The messages and orders between the different units are sent in the form of so called words All words have the same length Each word is divided into a number of fields each of which contains a given typ
110. in stage DATADEV for trimming out tolerances in the summing amplifier The DATADEV gain stage is nominally 0 dB with an adjustment range of 3 2 to 2 8 dB with steps of 0 4 dB HandsFree Circuit ANTON includes rectifier circuits for audio detection in the RX and TX paths A single port is provided for the monitoring of the rectified signal A switch is software controlled to select the RX or TX path for sampling An external capacitor is provided to set the time constant for each path Technical Description Software Design Power Down Control voltage regulators are on all the time when in SLEEP STAND BY and TRANS MIT mode The operation modes of ANTON and BERTINDY are software control led directly from GUSTAV through the serial interface Timing and Operation In the ETACS system it is most important that a well working sleep function can be implemented as this will increase the standby time by several hours Main Modes of Operation The transceiver hardware operation can be split into four main modes OFF SLEEP STAND BY and TRANSMIT OFF is when all regulated power are switched off by the on off logic The hard ware is powered up when the voltage regulators are enabled At power up the 8 MHz clock frequency synthesizer has to be loaded with the correct division ratios and the RAM has to loaded as well All software controlled circuits have to be initiated and loaded with their default settings and then powered dow
111. ines in the public telephone network Radio Channels Two different types of radio channels exist in a base station e voice channels VC e control channels CC The majority of channel units are voice channel units Such a voice channel unit is engaged in carrying one telephone call at a time Depending on how many simulta neous calls a base station is required to handle the number of voice channel units in some base stations may be only a few while in others up to a hundred or more There is normally only one control channel in each cell A mobile telephone being within a cell and not in the conversation state is always tuned to the control chan nel of this cell The telephone supervises the continuous data stream The total number of channels available in a mobile telephone system is limited As the radio waves only reach so far from the base station however identical channel frequencies can be used by several base stations provided the distance between them is sufficient to prevent interference This method is used to increase the capac ity of the system System Introduction Radio Coverage The coverage or the transmitting power of the base station is adjusted to the amount of traffic so less power is used in cities and other areas where the traffic is heavy The covered area in these cases may be limited to about two kilometers More power is permissible in less populated areas The range in these areas may amoun
112. iption subsection Battery Charging Optional Accessories Music Mute An optional Music Mute unit can be connected to the HandsFree Unit and will direct the amplified received audio signal to the car stereo speakers during the handsfree conversation If the car stereo is equipped with a specific mute input the optional Music Mute Cable connected directly between this input and the HandsFree Unit will mute the car stereo during the handsfree conversation Note Max current load at Music Mute output is 200mA Goose Neck Microphone A Goose Neck Microphone allows a more flexible microphone position for improved sound quality incl reduction of transmitted noise Data Extension Data communication using handsfree mode is made possible by connecting a Data Extension Unit between a modem and the Data Communication Connector External Handset An External Handset will give the user the possibility to switch from handsfree to handheld operation without disconnecting the power source A Data Extension Unit is required for the connection between the External Handset and the Data Commu nication Connector Specifications HandsFree Unit Accessories Type No 502 0019 BV Dimensions 135 x 100 x 28 mm 5 3 x 3 9 x 1 1 in Input Voltage 10 8 to 15 6 VDC Ambient Temperature Operating 25 C to 60 C 13 F to 140 F Ambient Temperature Charging 10 C to 35 C 50 F to 95 F
113. lled directly by the PORTHF port of the system connector Microphone Input The ASIC has a switchable 22 32 dB gain stage for amplifying low level micro phone signals The ASIC also provides a low noise bias voltage for microphone biasing ANTON is designed to provide gain to the portable handsfree microphone by the use of software controlled switches which are located before and after the Mic gain stage to allow routing of the signal from the ATMS port through the Mic amplifier The switches can be configured to route the mic audio through the mic amp to route ATMS through the mic amp or to bypass ATMS around the mic amp In all three cases the output of this block is routed to the soft limiter 29 Technical Description 30 Soft Limit A 0 to 30 dB attenuator follows the audio input block where this soft limit is ena bled through software and is used to limit clipping before the compressor The soft limit is controlled by two threshold comparators When the signal exceeds the threshold a clock will step a tap on a resistor ladder to increase the attenuation When the level drops below the threshold a slower clock steps the tap back up the resistor ladder to reduce the attenuation INPSENSE Programmable Gain Stage The soft limit output is AC coupled into the INPSENSE programmable stage and this stage is used to adjust the audio level into the compressor The gain is pro grammed through software in a range from 2 to 14 4 d
114. lumination Off TP 41 MENU 6 0 TP Test Program The above settings are automatically executed when entering the test program For detailed information regarding the adjustments refer to subsection Test Pro gram in this section Service Instructions Sequence of Adjustments Item 1 VCTCXO Purpose Checking and if necessary calibrating the reference frequency generator for the synthesizers Test method Radio test set in TX mode measured with a frequency counter Input signal None Measurement point Transmitter frequency at antenna connector Limit 890 0125MHz 200Hz Procedure 1 Turn on the transmitter TP 2 2 2 Disable the AFC TP 15 0 3 Check the frequency error 4 If the transmitter frequency is not within 890 0125M Hz 200Hz enter VCTCXO calibration TP 18 Press M to enable the calibration 6 Use and buttons to change value and press M S to store the new value 11 Service Instructions 12 Item 2 RSSI Calibration Purpose Calibration of the RSSI received signal strength indicator Test method Radio test set in RX mode Input signal Apply 935 0125MHz RF signal modulated with a 1kHz tone at 5 7kHz deviation at a level of 115dBm to the antenna connector Measurement point None Limit 115dBm 20 lt value lt 150 107dBm 30 lt value lt 218 87dBm 50 value 279 Procedure 1 Apply 935 0125MHz RF signal modulated with a 1k
115. minal volume Receive Bandpass Filter The output of the RXSENSE stage is fed into a 300 Hz to 3 kHz switch capacitor bandpass filter 27 Technical Description 28 Expandor Gain The gain in the expandor is a function of the input signal level with the following relationship for the expandor 2 X0 YO where reference input unaffected level YO reference output X input Y1 output The relationship states that a change in the input from to X1 will produce a change in the output from YO to Y1 that equals 1 2 The gain A is then A Y1 X1 Y0 2X0 X1 RX HF Attenuation Following the expander is a 0 to 49 dB attenuator for full duplex handsfree opera tion This stage is programmable in steps of 7 dB When the external audio signal on the system connector is low the software implements a handsfree algorithm that attenuates the unused audio path to prevent feedback from external speakers to the microphone Under normal modes of operation this stage is set to 0 dB However during the gen eration of DTMF tones to the earpiece this stage is used to attenuate the signal to prevent clipping RX Volume Control The RX audio level is controlled by a 0 to 24 dB gain stage in steps of 3 dB EARSENS Programmable Gain Stage A programmable gain stage is provided to trim the level to the Earpiece to provide 84 dBspl with a 1 KHz tone at 2 3 KHz deviation and max volume setting 0 dB This stag
116. n a conversation is initiated by the phone The audio signal is supplied from the latch to the phone via the ATMS pin of the System Connector Audio From Mobile Station The analogue audio signal from the phone is received via the AFMS pin of the Sys tem Connector and supplied to the Audio From Mobile Station block where the level of the signal is reduced by an amplifier and then A D converted Microphone Amplifier The low level signal from the microphone is amplified and filtered by the Micro phone Amplifier which also includes an A D converter The signal level is reduced prior to being digitised in order not to exceed the max allowed peak voltage at the input of the A D converter Speaker Amplifier The digital speaker signal from the DSP is D A converted fed through an analogue multiplexer and a latch The final stage of the Speaker Amplifier includes the power amplifier which is able to supply approximately 7W into a 4Q speaker The 12V power supplied to the Speaker Amplifier is switched on and off by the phone via the DCIO pin of System Connector 37 Accessories 38 Music Mute Control An optional Music Mute unit is supplied with 12V via the DCI2OUT pin of the Music Mute Connector The Music Mute function is controlled from the phone by the MUTE signal of the System Connector via the DSP a latch and finally a switch ing transistor in the Music Mute Control block Power Supply The HandsFree Unit is able to deliv
117. n by software until needed again SLEEP mode is the lowest operation mode the transceiver can be put in excl OFF mode All receiver transmitter and audio circuits are put in power down mode or switched off STAND BY mode is the normal data receive mode where the transceiver can listen to the data signalling from the base station TRANSMIT mode is the normal conversation data mode Power Saving Sleep Function When in STAND BY mode the transceiver doesn t have to be awake listening all the time as there are time slots where the transceiver can be put into SLEEP mode Software Assignments Software is loaded via the serial channel through GUSTAV into the Flash EPROM and the main assignments are controller of the hardware circuitry communicator with the cellular system via the RF link provider and handler of the operating interface to the user provider of test and tune commands for factory and field service co ordinator of the overall system e g operating system controller of the battery charging 33 Technical Description Technical Specifications 34 General Phone Model Type Number System Frequency Range Channel Spacing Number of Channels Modulation Frequency Stability Duplex Spacing LCD Keypad Antenna External Antenna Jack Voltage Operation Power Consumption Standard Battery Durability Dimensions Weight Temperature Range Humidity Transmitter
118. n letters remaining positions can be blank CC Data System A B First control channels and the number of control channels for system A and B Values are to be entered in decimal form Station Class Mark The Station Class Mark is always set tot 13ypx Enquiry Number The number of digits of the Enquiry Number and the actual Enquiry Number No of Emergency Numbers The total number of available Emergency Numbers Emergency No 1 The number of digits of the Emergency Number and the actual Emergency Number Emergency No 2 As Emergency No 1 if available otherwise set to 0 Emergency No 3 As Emergency No 1 if available otherwise set to 0 International Prefix Information The number of digits of the International Prefix and the actual International Prefix NAM User Selectable Y NAM can be selected by the user N NAM cannot be selected Note First NAM must always be enabled Subscriber No The Subscriber Number is a max 10 digit number from which the user may want only part of it to be displayed Enter for 10 digit display or enter 0 to 9 for the reduced number of digits counted from the end digit The Subscriber No is information aimed for the user and is not used by the system Test Service Programs Mobile Station Identification No The 6 least significant digits of the international mobile station number in most countries equal to the 6 least significant digits of the subscriber number ACCOLC AID The
119. ne program for each phone model which are installed in the above sequence Note The installation procedure below describes how to install the EMMA flash program by using standard floppy disks but the program may become distributed in other media formats 43 Test Service Programs 44 Installing the Shell Program Itis not possible to install a Flasher program unless the Shell program first has been installed on the local hard disk or a network server To install the Shell program proceed as follows 4 Close all active windows and insert the Shell disk 5 In the Program Manager window click on File and Run type a setup in the Command Line box and click OK 6 After a while some important information is displayed Read the information and click Next gt 7 The shell program suggests a Destination Location in the directory C emma If convenient click Next If not convenient click Browse select a suitable directory and click Next 8 The copying of files is begun and also displayed by several graphs 9 After completion of the file copying the installation of the Shell program is ended but additional information can be retrieved by clicking Yes to the question Do you want to view the README file now 10 Confirm the completion by clicking OK in the Information window and remove the disk Note The path and name of the Shell location directory must not be altered after completed installation Installin
120. pad NAM Programming E EE 33 Long NAM Programming 34 Programmable Parameters _ 34 Programming Instructions 36 Default Values 38 Quick NAM Programming 40 Programmable Parameters _ 40 Programming Instructions 41 Default Values 42 Flash Programming 43 Introduction 43 Hardware Requirements 43 Software Setup 43 Installing the Shell Program 44 Installing a Flasher Program 44 Flash Operation 45 Hardware Setup 45 Flashing Instructions 45 Test Service Programs Test Equipment Test Service Programs The type of equipment required for service on the Ericsson Mobile Phone EF738 is listed below and includes instruments tools and other hardware Descriptions of the programs for test service NAM programming ESN transfer and software upgrading are also included in the following subsections Recommended Instrument Alternative 1 Radio Test System lternative 2 Communication Test Set Alternative 3 Communications Test Set Alternative 4 Radio Test Set Signalling Unit Other alternatives Oscilloscope Multimeter Digital Voltmeter Power Supply Unit POWER SUPPLY GROUND INSTRUMENT FRONT IN AUDIO OUT C Q IN AF OUT Tm A KRY 101 1612 2 Instruments Recommended Unit Marconi 2960 Schlumberger 4031 Schlumberger 4015 Rohde amp Schwarz CMS 52 Rohde amp Schwarz CMS B13 Tektronix 2235 Hewlett Packard 3468A Fluke 8060A Power Box EK030 10 GROUND CABLE black SUPPLY CABLE r
121. powers on the phone by connecting the battery voltage to the enable inputs of the regulators through a diode The processor then comes out of reset and latches the enable inputs of the regulators Chargers and accessories power on the phone by applying 7 0V 10 0V at DCIO The voltage difference between DCIO and the battery voltage turns on a transistor connected to the enable inputs of the regulators As with the ON OFF END key the DCIO voltage must be present for at least 200 ms in order to power on the phone If no charger is connected the phone is powered off by pressing and then releasing the ON OFF END key Pressing the ON OFF END key generates an interrupt to GUSTAV via a transistor GUSTAV then tries to disable the regulators but these will stay on until the ON OFF END key is released If a charger is connected the phone will stay on until the processor detects that the charger has been removed no cur rent from charger to phone The phone cannot turn itself off as long as a charger is connected Charging Circuitry The phone software controls charging by turning a FET switch on off based on bat tery voltage and charging current through a 0 1Q resistor Chargers are designed to have an open circuit voltage less than 10V and supply an average current of approx imately 700mA when connected to a battery through the FET switch A resistor allows a dead battery to become trickle charged high enough for the phone to turn on MIA provides
122. pply Optional Accessories Music Mute Goose Neck Microphone Data Extension External Handset Specifications HandsFree Unit Cradle Connectors and Signals Holder System Connector HandsFree Unit System Connector J1 Power Connector J2 Microphone Connector J4 Music Mute Connector J5 Data Communication Connector J6 Speaker Connector J7 Continued on next page 27 27 27 28 28 28 28 28 29 29 29 29 29 29 30 30 30 30 30 30 31 31 31 32 32 32 32 33 33 34 34 34 34 Accessories Vehicle HandsFree Solution HF7600 Introduction 35 35 HandsFree Features 35 Echo Cancellation Noise Reduction HandsFree Components 36 36 36 Cradle Stick On Microphone External Speaker Handsfree Unit _ Digital Signal Processor DSP Audio To Mobile Station Audio From Mobile Station Microphone Amplifier Speaker Amplifier Music Mute Control Power Supply Optional Accessories 36 36 37 37 37 37 37 37 37 38 38 Music Mute Goose Neck Microphone Data Extension External Handset Specification 38 38 38 39 39 Handsfree Unit _ Cradle Connectors and Signals 39 39 40 Holder __ System Connector HandsFree Unit System Connector J1 Power Connector J2 Microphone Connector J4 Music Mute Connector J5 Data Communication Connector J6 Speaker Connector J7 40 40 40 41 41 42 42 42 42 Accessories Rapid Charger Introduction The Rapid Charger
123. r level 4 3 power level 3 2 power level 2 maximum output power When the power reduction function is activated in menu 76 power level 2 will be displayed as S When the extra power option in menu 76 is activated power level 2 will be displayed as X Used only when loading the program into a terminal Calibration of power levels Transmitter is turned on and tuned to the calibration channel Modify the power levels with the following keys increases decreases the power level M S stores the value and steps to next power level transmitter is turned on M starts calibration and displays power level steps forward to next power level 2 gt 3 gt gt 7 gt 2 C turns off TX restores channel no returns to menu 0 Performs two simple transmitter tests a general Go NoGo trans mitter test and a transmitter leakage test To start the test press any key except C The result is displayed when the test is finished FF both tests passed 01 general transmitter test failed 02 leakage test failed Factory and level 5 repair only 9 RF CAL 10 RX SENS 11 KEYPAD 13 BANDGAP 14 AUDIO DEV 15 AFC Test Service Programs Calibrates the RSSI levels based on the level of the signal cur rently being received The value determined for each level is the minimum strength signal for that level averaged over 16 readings to provide a more reliable value The value for level 0 is used to update the Receiver Carrier
124. re programmable to become operable in both systems If both systems are programmed as System A the automatic NAM switch function will search the A system channels for both NAMs Home System Identity Number AID This identity number states the subscriber home system and is provided by the sub scription operator First Paging Channel The first paging channel is programmed in service mode and the appropriate value for this parameter is provided by the home system operator at subscription Roam This parameter defines whether inter system roaming is allowed on the comple menting network or not If set it will enable the use of both systems A and B in the present NAM Access Overload Class Overload class field that controls access attempts made by the MS identical to the second last digit of the IMSI Response to Local Control Message Enabled Determines whether the MS will respond to Local Control Messages sent on the Forward Control Channel Sending of Extended MS Number Determines whether the MS must send the extended address word when accessing the system 35 Test Service Programs 36 Programming Instructions To enter the Long NAM Programming mode press 923885 MENU MENU or keep the MENU key depressed while pressing 923885 After entering the Long NAM Programming mode the phone exits the Standby mode turns off the radio and becomes non operational Key Functions
125. rs some parameters will be displayed as two parts an intro text shown for 1 second followed by the numeric data indicated as two text lines in the Display column below Menu Type Display Menu Action ESN Electrical Serial No ESN 12311 3 most significant digits shown 1 sec 12345678 Remaining digits shown thereafter Subscription with charge rate CHARGE OFF 2 Press 0 9 to switch CHARGE ON Country international prefix INTER PREF 3 Enter a number with max 4 digits 07 International Mobile Station IMSI 1 4 Enter a 10 digit number Identity Number IMSI 1111110111 Subscriber number SUBNUMBERI 5 Enter a max 10 digit number 1111110111 Home system identity AIDI 00000 6 Enter a number 00000 32767 incl number AID leading zeroes 41 Test Service Programs Default Values number AID 42 Parameter Austria China Hong Ireland Italy Malay Kong sia ESN Hlectrical Serial No Subscription with charge rate off off off off off off Country international prefix 00 00 00 00 00 00 International Mobile Station 2320 460 0 4542 2340 2222 5020 Identity Number IMSI 123456 123456 123456 123456 123456 123456 Subscriber number 0000 0836 90 0836 0337 0000 123456 123456 123456 123456 123456 123456 Home system iden
126. ry synthesizer using a varactor diode The TX IF signal is also buffered and sent to the auxiliary synthesizer to maintain a constant 90 MHz TX IF frequency TX Mixer The TX mixer multiplies the TX IF signal with the first LO signal from the main VCO to create the desired output signal The mixer is designed to have a low noise floor in order not to affect the receiver performance The output is differential and an LC network is used to align the signals to make them combine constructively TX Modulation The modulation of the transmitter occurs in the TX IF VCO tank circuit The base band signal coming from the audio IC ANTON is filtered and used to shift the reso nant frequency of the external tank circuit by the varying capacitance of the varactor diode TX IF Frequency Control The center frequency of the TX IF VCO is controlled by the auxiliary synthesizer located in BERTINDY A portion of the TX IF signal is buffered and sent to the TX oscillator outputs This signal is used to lock the TX IF in the Auxiliary PLL Programmable Prescaler MALIN also includes a prescaler for use in the main synthesizer loop The divider has separate Vcc and ground connections to provide good isolation from the TXPA outputs 19 Technical Description Power and Charging Design Battery Connector System Connector 3 8V Regulator Battery Voltage MIA vco TX Buffer Red Green LED Backlight LEDs
127. s an internal buffer for the Local Oscillator LO which allows low LO input power and immunity from variations in LO input power At the RF port an inductor rejects the noise coming to the mixer directly at the IF band The output of the mixer is converted to a higher impedance to match the crystal filter in the following IF circuitry IF Part The IF AF part is the second link in the receiver chain It performs the major part of the RF amplification and all the channel filtering The 1st IF at 45 MHz is down converted to 450 KHz and FM demodulated in Bertindy The IF IC generates a DC voltage RSSI which is logarithmically proportional to the strength of the received signal S 5 SE EE rey ia rie vile ER I To Digit Discr amp I De Emphasis i BERTINDY d I 1 I i From ANNIKA L xs r 2nd LO 1st 2nd 45MHz from 450KHz 450KHz Filter BERTINDY Filter Filter Figure 7 IF AF Link Technical Description Receiver Back End The IF AF circuit is an integrated bipolar circuit containing a mixer IF amplifier limiter RSSI circuits and FM detection circuit The rest of the required functions are located in BERTINDY The Ist IF frequency of 45 MHz is fed to the 2nd mixer where it is down converted to 450 KHz 2nd IF in the IC The 2nd LO signal at 44 55 MHz for the mixer comes from BERTINDY Third harmonic of the reference oscillator
128. s enabled N Calling Line Identification functions disabled Long NAM Programming Entry Y User access to the NAM menu is enabled N User access to the NAM menu is disabled Test Program Entry Y The test program is accessed by entering a code on the keypad N The test program cannot be accessed from the keypad Country Menu Entry Y User access to the Country Menu is enabled N User access to the Country Menu is disabled Rescan Time minutes No of minutes until a Rescan is started default 5 minutes after signalling Handset Feature Y Handset Feature enabled N Handset Feature disabled No of Auto Retries Max number of Automatic Retries default 3 System Busy Wait Time Time between attempts in Auto Retry when system is busy default 0Aypx Called Side Busy Wait Time Time between attempts in Auto Retry when called number is busy default Test Service Programs Keypad Layout Type 0 Not applicable 1 New international alpha keypad layout ABC Indicator Debug Enables the use of special indicators ABC for internal tests 0 not used 1 NAM system indication 2 Accessory indication 3 Data Voice mode 4 TX power indication 5 Power save indication 27 Test Service Programs 28 SYSTEM OPTIMIZATION amp RESTRICTIONS Po SYS OPT amp RESTRICT Enable NAM Selection Enable Country Sel Not used set to N Sec Code Menu Not used set to N NNNNN NNNNNN
129. s to enable reading of the battery voltages Front Slot Monitor If the CPU input of the Front Slot Voltage Monitor suddenly detects a voltage at DCIO when the corresponding charge switch is Off this means that the voltage is coming from the battery i e a phone has been inserted into the slot This will be detected regardless of whether the phone is turned On or Off If Off when inserted the auto turn on mode will turn it On However if the phone is removed during charging e g when a call is received this will not be detected as this input still will read a voltage now coming from the external power source See Phone On Off Status on next page Rear Slot Monitor The Rear Slot Voltage Monitor detects whether the spare battery requires charging During the charging the current is switched off for a short while every other second in order to read the battery voltage and in this way establish whether the battery is fully charged or not The CPU is in this way also informed if the battery is removed during the charging process 19 Accessories 20 Phone On Off Status The VDD input indicates whether the phone is Off or On and will inform the CPU if the phone has been removed during charging Discharger To prolong the battery life the rear slot is equipped with a reconditioning feature By pressing the discharge switch same as the rear LED indicator the CPU becomes notified that it will have to carry out a discharge operation
130. service manual EF 738 Ericsson Mobile Phone Type 1030601 BV EN LZB 126 1319 R2A MOBILE PHONES BY ERICSSON 2 System Introduction 1 Service Manual Technical Description 2 Test Service Programs 3 7 3 3 Service Instructions 4 Accessories 5 HandsFree Installation 6 Spare Parts 7 Ericsson M O b e Service Messages 8 Phone 1030601 BV ERICSSON 2 EN LZB 126 1319 R2A Second Edition January 1998 Publication number EN LZB 126 1319 R2A Ericsson Mobile Communications AB 1998 Rights Reserved Printed in Sweden 1998 Preface The Ericsson service philosophy includes the ambition that engineers serving our telephones also possess a general knowledge of the system for which they are intended as well as of the phone itself and its accessories This manual contains consequently not only information regarding the actual serv ice work but also additional information as stated below Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 System Introduction network description frequency tables Technical Description description of the mechanical design operational description of the electronic circuitries technical specifications Test Service Programs test equipment test program ETACS service program keypad NAM programming flash programming Service Instructions system connector signals disassembly reassembly
131. sson Mobile Phone EF738 Technical Description Technical Description Contents Overview 7 Basic Building Blocks 8 Transceiver Block Diagram 9 PCB 10 Mechanical Design _ E 11 Man Machine Interface MMI m E 12 Keypad 12 Display 12 Acoustic Signals 12 Top LED Indicator 12 Radio Design __ 13 General Overview 13 Antenna Connector 13 Antenna Filters 13 Receiver Part 14 Receiver Front End 14 IF Part 14 Receiver Back End 15 Synthesizer 16 Programming 16 Power 16 Lock Detect 16 VCTCXO 17 Transmitter 18 TX Blocks 18 MALIN 19 TX IF VCO 19 TX Mixer __ 19 TX Modulation 19 TX IF Frequency Control 19 Programmable Prescaler 19 Power and Charging Design __ 20 Regulators 20 Reset 21 On Off Control 21 Charging Circuitry 21 Transient ESD Protection 22 Off Current Draw 22 User Interface __ 23 Illumination 23 Buzzer 23 LCD Display 23 Keypad 23 Continued on next page Technical Description Logic Design 24 GUSTAV 24 Circuit Description 24 6303 24 ROM 24 RAM 24 Bus Interface 24 Decoder 25 Serial Interface 25 External Ports 25 WatchDog On Off 25 IFC 25 BAR 25 Clock Generator 25 Internal Ports 26 Modem 26 Baud Clock 26 PC Controller 26 FLASH EPROM 26 EEPROM 26 Audio Design 27 Receive Audio Circuit Description 21 Receive Audio Interface 27 De Emphasis Network 27 RXSENSE Programmable Gain Stage 27 Receiv
132. t to about 40 kilometres Local Transit Exchange Exchange Figure 3 Service Areas with Radio Zones and Base Stations A method known as the small cell technique may be applied in areas with an extreme demand on radio capacity With this technique the service area to be cov ered is divided into a number of radio zones see fig 3 Each radio zone is covered by a base station which includes a transmitter Tx and a receiver Rx For such a system to operate without the base stations interfering with each other the available frequency band is split up for example into six different groups A F with a cer tain number of frequencies in each group Allocating these groups in such a way that no radio zone operating on a particular group of frequencies adjoins another operating on the same frequencies makes it possible to cover an entire service area without any interference between the base stations Fig 4 shows an example of channel allocation Figure 4 Channel Allocation System Introduction In order to reduce the risk of interference still further and to remove noise the sys tem uses the compander technique Basically this method improves the signal noise ratio of the radio channel by compressing the signal before transmission and expanding the signal on reception The ETACS system features full duplex operation with a duplex separation of 45 MHz Full duplex means that a conversation can pro
133. tions 14 Item 4 Maximum Deviation Purpose Checking and if necessary calibrating the maximum deviation of the transmitter Test method Radio test set in TX mode Input signal 1kHz sine wave signal at 320mV pgs to ATMS system connector Measurement point At the antenna connector measured with a deviation meter Tolerance 7 2kHz 1dB 6 462 7 200 kHz Procedure 1 Set TXSENS programmable gain stage to nominal value TP 7 value 7 Enable the compandor TP 29 1 Connect a 1kHz sine wave signal at 320mVgys to ATMS system connector Turn the transmitter on TP 2 2 Monitor RF peak deviation If the deviation is outside the limits adjust the deviation Enter TP 14 Start the trimming by pressing M 00 10 tA A N Trim audio deviation to 6 462 7 200 kHz by pressing and to increase decrease the deviation Allowed trim values are 2 to 13 Trim step size is 0 4dB per step 10 Press M S to store the value Service Instructions Item 5 Nominal Deviation Purpose Checking and if necessary calibrating the nominal deviation of the transmitter Test method Radio test set in TX mode Input signal 1kHz sine wave signal at 190mVgys to ATMS system connector Measurement point At the antenna connector measured with a deviation meter Limit 5 7kHz 0 5dB 5 38 6 02 KHz Procedure Enable the compandor TP 29 1 Connect a 1kHz sine wave signal at 190mVRMS to ATMS
134. tity 26625 02051 11083 02051 24641 18435 number AID Parameter Philip Singa Spain UK Kuwait pines pore ESN Electrical Serial No Subscription with charge rate off off off off off Country international prefix 00 00 07 00 00 International Mobile Station 460 0 5257 2148 2340 2340 Identity Number IMSI 123456 123456 123456 123456 123456 Subscriber number 0836 7 908 0836 0836 123456 123456 123456 123456 123456 Home system identity 02051 20480 23552 02051 02051 Test Service Programs Flash Programming Introduction The Ericsson Mobile Maintenance Applications EMMA flash program is a tool used for upgrading and recovery of the software for the new generation of Ericsson mobile phones This description of the EMMA flash program includes information on hardware requirements software setup hardware setup flashing instructions Hardware Requirements The following equipment is required when using the EMMA flash program for the Ericsson mobile phones PC with Windows 3 1 or later operating system COM port COMI available on the PC Programming cable KRY 101 1135 10 RIA Programming interface NTZ 112 311 Adaptor 25 to 9 pin for PC equipped with a 9 pin COM connector not supplied by Ericsson Software Setup The EMMA program consists of two separate programs the SHELL one program common for all phone models based on this platform the FLASHER o
135. tment Initial trimming for component tolerances is done by DAC2 in the factory In the field the TCXO is adjusted mainly through DACI for temperature compensation and AFC DAC2 is only adjusted in the field when necessary to maintain the fullest DACI range possible This is where the integer ratio of tuning sensitivity is desira ble The inherent frequency deviations of the crystal when operated over the full temper ature range are corrected by a software controlled temperature compensation algo rithm A look up table is stored in memory which is indexed by temperature readings from a signal originating from a thermistor voltage divider network This is the only means for frequency compensation in the field when the down link signal from the base station is weak and below the AFC threshold When the base station signal is above the threshold roughly 110 dBm and when the phone is in either idle or conversation mode the AFC algorithm is enabled The temperature compen sation table ensures that the TCXO frequency will be kept close enough to lock to the base station signal and null out frequency error once the proper conditions are met 17 Technical Description 18 Transmitter The transmitter section amplifies the transmitter signal from approximately 0 25 mW to 1 25 W This section is compound by a driver stage and a power ampli fier Output power is regulated by a closed feedback loop incorporating a stripline cou pler Scho
136. tral Processing Unit interacts with the following major peripheral blocks e Supply Current Monitor Charge Switches front amp rear Voltage Monitors front amp rear Phone On Off Status Discharger e LED Indicators front amp rear Temperature Guard System Bus VDD Connector Supply Front ACCDCIO 4 Current Voltage Monitor Monitor Temp Rear Voltage une Monitor Front LEDs Rear LEDs Dis charger Accessories Supply Current Monitor The current distributed from the external power source to the front or rear slot passes through the Supply Current Monitor The CPU reads the output from the Supply Current Monitor is order to establish whether charging or charging com pleted is in effect as follows gt 200mA Charging lt 200mA Charging completed Charge Switches The current from the external power source to the two slots can independently be switched On Off by two separate CPU outputs Front Slot Switch This CPU controlled switch is normally On except when the spare battery is being charged Rear Slot Switch The rear slot charging switch is controlled by the second CPU output which will allow charging of the spare battery only if the phone battery is fully charged or if no phone is inserted in the front slot This switch goes Off for a short while once every other second for voltage reading purposes Voltage Monitors The CPU controls the Voltage Monitor
137. ttky rectifier diode and a power amplifier with high and variable gain and high efficiency F TX TX Power Antenna Fitter Attenuator Amp Duplexer I Coupler Rectifier Level Figure 6 Transmitter Block Diagram TX Blocks TX Driver Amplifier The transistor used is a bipolar type in a common emitter configuration which offers unconditional stability and good dynamic range The output and inputs are matched to 50 2 and there is an attenuation at the output to avoid damage in PA Power Amplifier Module The output power of the PA module is varied by controlling the bias point The sat urated output power of the PA is dependent upon the load presented at its output For the required saturated output power and efficiency a specified load must be used Power Detector The power sensing is done with a coupled stripline detector This circuit senses for ward power with some directionality A Schottky diode is used to rectify the RF and this diode is forward biased to avoid having the diode snap off when detecting low levels of RF Direct temperature compensation is achieved by providing the detector bias voltage via a matched diode Power Control The output power from the power amplifier is regulated by an active feedback loop The reference value is set via a D A converter in BERTINDY and is connected to the
138. ver the voice channel selected by the base station If a zone boundary is passed during the call the channel will be switched over automatically to the new base station and the call will continue without any disturbance System Introduction If the mobile telephone makes a call a call request will be sent to the area base sta tion which will select a voice channel and direct the mobile to the selected channel As in the previous case the call will be transmitted over the selected voice channel until a zone boundary is passed The mobile telephone uses the control channel for different purposes namely to report to the system when it passes from one service area into another One of the purposes is for page response which is an answer to a cell access from a mobile sta tion that is a call from the mobile phone or an order confirmation When messages are sent to all mobile phones being tuned to a control channel this is called over head message The system parameters are transmitted during this message and con tain for instance the following information about the cellular system AID Area Identity indicates system A or B system identity number MSC serv ice area and location area DCC Digital Colour Code identifies which group of cells the message belongs to Quality Control Each time a connection is established the exchange automatically measures the field intensity of the mobile telephone During conversation the s
139. with 500 impedance in each direction The task for the TX filter is to suppress wide band noise evolving from the VCO and the power amplifier on RX frequencies The task for the RX branch is to suppress the transmitter signal to a level low enough not to overdrive the receiver front end amplifier and attenuate external spu rious signals The RX section also suppresses leakage from the local oscillator 13 Technical Description 14 Receiver Part The front end stage is the first link in the receiver chain It s purpose is to amplify the RF and down convert it to the 1st IF frequency and to set the RX system noise figure The desired input frequencies are within the range 917 0125 to 949 9875 MHz The selected frequency is down converted to 45 MHz and amplified This section includes a low voltage RX front end chip Low voltage ANNIKA com prised of a low noise amplifier a mixer and the 1st image filter Receiver Front End ANNIKA RF amplifier The input of the integrated low noise amplifier is matched for optimal performance regarding minimum noise level and second order intermodulation performance It also provides a 500 load to the duplexer BP filter This bandpass filter is a SAW filter needed for spurious response rejection suppres sion of the first image frequency The filter also suppresses the local oscillator backwards to the antenna ANNIKA Mixer The integrated mixer in the same package as the LNA include

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