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1. 11 8 i BBP 1054045 MTX900 Theory Maintenance seem meme GB P8 1054040 On page ji MODEL OPTION CHART replace with Model Option Chart listed below MODEL NUMBER DESCRIPTION Basic Packaga Enhanced Package ITEM DESCRIPTION NTN5612A Charging Console Basic Charging Console Enhanced 12 Watt Speaker NTN5633A Palm Mobile Microphone DTMF Palm Microphone 1056 Mini Mobile Microghone HMN3013A DTMF Palm Microphone Timed Tones ADS Antenna 1 4 Wave Rooftop 144 152 MHz AD Antenna 1 4 Wave Rooftop 152 162 MHz E eT TSA TAD6114A Antenna 1 4 Wave Rooftop 162 174 MHz RAE4012ARB Antenna 588 Gain Rooftop 406 420 MHz RAE4014ARB Antenna 598 Gain Rooftop 445 470 MHz 4015 Antenna 548 Gain Rooftop 470 494 MHz A Antenna 5dB Gain Rooftop 494 512 MHz RAF4001A Antenna Rooftop 806 866 MHz Antanna Rooftop 890 960 MHz KEY X ITEM INCLUDED MAEPF 20088 A A ALTERNATE ITEM OPTIONAL May 22 1989 1 of 3 FMR 1412 1 NQ 1 On page 1 1 GENERAL first paragraph add the following sentences after the first sentence The words no external hookup means the radio has no df in out connections at the accessory connector which makes the MVA rear antenna connector not applicable for this radio For MTX800 radios operatio2. MODEL NO NAME CHARACTERISTICS APPLICATION LLL R 2001 R 2002 Service Monitor si Audio circuit or R 2200 testing frequency devialion power output 5 1347 DC Power Supply 0 20Vdc Power supply lor 0 5 Amps bench testing current limited S 1053 AC Vollmater imV to 300mV Audio vollage RMS 7248 to measurements 5208 input impedance R 1028 Solid state Wavetorm Osellloscope measurements A 1001 Digital High input DC voltage Multimeter impedance resistance measurements See your Motorola sales representative for aid in ordering test equipment The sales representative will analyze your requirements and help you select the latest available equipment and service aids to suit your individual needs 1 MAV PACK 3 VID 952 The VID 952 Motorola Video Visual Package MAV PACK is a video tape training program on 5 component repair techniques This VHS format video cassette and supplemental literature describe the removal and replacement of leacless components using the following specialized equipment RRX 4033 Laurier Hot Gas Bonder RPX 4234A Regulator and Hardware Kit 0180386A62 Heated Tweezers RSX 1002 Desoldering Station 5 1008 Weller Soldering Station This MAV PACK is strongly recommended for technicians who intend 1o service this and other Motorola products using ieadless components This VHS videotape is in standard half inch format This
3. a TPI2 TPH4 TPIS e RI60 RIG RIG2 RIG3 8164 ff 120 120 120 120 120 18k 4 7k EI cm 15 i f 022 ro RI20 X tios 7 R287 RI26 B 2k 38 SARS f 3af Roa 222 pe 47k 330pF 82 MA 057 ceo DYNAMIC VOLTAGE 4 7uF WINDOW LED DRIVERS m B los Se SoS Se R66 33 1 A vany 1 L S C DETECT BATTERV 0 C DETECT MOTOROLA ING MANUAL REVISION for Manual No 68P81062C75 0 MT10007M Vehlcular Adapter This revision outlines changes that have occurred since the printing of your manual Use this information to supplement your manual Installation of these changes in earlier equipment is not necessary except as recommended in Motorola Service and Repair Notes SRN s REVISION DETAILS NQ CHANGE AFFECTS ITEM 1 General Information CHANGES NO 1 page RELATED PUBLICATIONS AVAILABLE SEPARATELY add the following manuals MTX800 Service anne 8 81049 70 MTX800 Theory Maintenance 2 2 68 81049 65 MTX900 Service
4. XL 30V CR27 RIO8 cios T ceo 4 7uF 330pF DYNAMIC VOLTAGE WINDOW 120k 20 x See See S C DETECT 8 CR39 CRAO RIO CURRENT REGULATOR ______ _ _ _ LASS ee ids En 1 u2 s iors 3 o OUT R83 RISL 1 82k 824 CR6 T 50 trop R34 836 RI36 4 150 4 74 47k l BR Ba 5 E 1 1 1 a l pu 6 us L CAP 050 AR C5 url L2 T3300F Te or RI2 Au F 450 ST 500 A70pF E ClO YB sso T Ras P mai 5 i 47 029 i i BATTERY T c52 t ON 82pF Fa gt 22k R4 3840 18V ES 13k 20k 2 6 E El ENT ln isn ye JI 2 l 1 l 1 TEMP WINDOW ids 49 RAB 1M R60 R59 200k 100k R473 cos CB 22k a ur T BATTERY 0 C DETECT 63001062 76 0 SCHEMATIC DIAGRAM 17 RI RIS 1 023 4n RHO ee
5. MAV PACK as well as others is available from Motorola C amp E Inc National Service Training Center 1300 N Plum Grove Road Schaumburg Illinois 60195 c Troubleshooting Reter to the troubleshooting and voltage charts at the back of this section to isolate a malfunction to a defective circuit Follow the flow through the chart check each observation and answer each question As an aid in understanding the operation and functioning of a particular circuit refer to the appropriate paragraphs in the THEORY OF OPERATION section of this manual circuit board must tested it may be necessary to remove from chassis and test it outside of the enclosure In this case leave all wires connected to the board and usa care to protect the board from being accidentally shorted out Use heat sinks with insulators on transistor Q2 while the board is removed from the chassis 11 0 c e 12 Console Disassembly NOTE The Universal Connector pins can be individually replaced without disassembling the console Grasp the pin with a pair of tweezers and pull it out towards the rear of the console Unlock the MVA remove the radio from the pocket and disconnect all cabies including the microphone Remove the key from the lock and place the console on a flat surface Referring to Figure 4 insert a small flat bladed screwdriver into the two top housing catches a
6. The cold side temperature is below 8 C while the hot side temperature is above 41 C If the temperature rises above 60 C the output of U4 B goes low cutting off charging completely Temperature sensing is through a thermistor RT and its resistance is converted to voltage and compared with preset voltages of each comparator During normal operation 8 C to 41 C the output at U4 D pin 14 is high turning on Q5 and the charging rate is 0 4C If the temperature falls below 8 C the output at U4 D pin 14 is low turning off Q6 Q4 and Q5 charging at 0 1C As the battery charges the temperature of the battery increases causing RT resistance drops As the temperature increases and exceeds 41 C the output of U4 C goes from high to low causing the output of U4 A to go low and turning off Q6 Q4 and Q5 the is now in slow charge 0 1 C Once the battery temperature goes above 41 the rate of charging will latch at 0 1C with the help of Q30 031 Q32 and associated circuitry This prevents a fully charged battery going back to rapid charge as its temperature drops The sudden low output at U4 A results in a low 8 output at U5 C 2 changing LEDs CR28 amp CR29 from red to green indicating complete state of charge This charging rate will continue as long as the temperatura of the battery remains below 60 If the battery temperature exceeds 60 degrees the output of U4 8 goes low and the pass transistor Q2 t
7. amp btty 2 Check DC circuftry in console for proper charging operation If btty Is discharged Check if ext spkr select 52 1 is enable Check if extemal spkr select S2 1 and CVC No en Check 12W audio power amplifier Dekey mobile microphone check for Check charger proper charger circultry operation Check for continuity of mic conn to universal conn and universal flex to universal head conn Is there sufficient deviation MCEPF 18497 0 TROUBLESHOOTING CHART TPLE S815 0 ELECTRICAL PARTS LIST REFERENCE MOTOROLA SYMBOL PART NUMBER DESCRIPTION 9899959 C18 C18 thru 22 C23 24 C25 C26 thru 30 C31 C32 C33 34 C35 C36 C37 C38 C39 40 C41 C42 thru 46 C47 C48 cag C50 C51 52 C53 C54 C55 56 C57 thru 61 C100 C101 C102 C103 C104 105 C106 CR CR2 OFG 4 CRS thro 7 CR26 CR27 CR28 CR29 CR32 CR33 thru 37 thru 41 43 1 2 J3 4 J5 J6 7 Ki 2160521837 2113741429 2113741448 2160521A11 2113741421 230215903 2302159J02 2269561 23 2362998074 2362998074 2113740 67 2113740A53 2362998074 2360561 23 2113741 45 2113740A67 2113741 45 2113740A53 0902178J01 0902167J01 09021701 09501130901 0902176401 8002161J01 2405452C08 2502162405 1uF 10 20V Tant 2213 2096 18 S30pFt5 50 Not Usad 0
8. 13V 92V 12W SPEAKER or HI COMPLETE UNSQUELCHED U12 027 _ RADIO ON PTT SW PRESSED 430v RADIO OFF SW PRESSED 02V LO LED CIRCUITAV SECTION VOLTAGE MEASUREMENTS RED LED ON RAPID CHARGE BATTERIES RAPID CHARGING U4 us a GREEN LED OFF TRICKLE CHARGE BATTERIES STANDARD CHARGING ps PNIS PIN2 C HI HI HI HI LO RED LED OFF RAPID CHARGE BATTERY COMPLETE LO Hi LO LO HI OR GREEN LED ON LO 14 EXPLODED VIEW PARTS LIST TPLF 3816 O ITEM MOTOROLA NUMBER PART NUMBER DESCRIPTION 1 010270305 BRACKET Trunnion includes items 243 2 0400114169 LOCKWASHER 2 req d 3 0383265G05 SCREW Hex Socket 2 req d 4 1505066 01 HOUSING Top 5 300217301 CABLE Miniature UHF Assembly 6 2602328J01 CLIP Heatsink 2 req d 7 4205200R01 CLIP Power Transistor 8 0102701742 ASSEMBLY Main includes 6 9 19 24 25 amp 33 5 See Note POT Volume R109 10 0705097R01 BRACKET Keylock 4102146J01 SPRING Keylock 12 3702133J01 SLEEVE Friction 13 4705099R01 ROD Vibration 14 1505069R01 HOUSING Bottom 15 640213901 BASEPLATE 16 1302141401 ESCUTCHEON Side 17 3605096801 Keylock 18 1302140 01 ESCUTCHEON Bottom 19 1502138401 HOUSING Charging Contact 20 550214701 KEYLOCK 21 0105951 79 ASSEMBLY Knob Volume 22 1505067801 HOUSING L Connaci 23 3902135102 CONTACT U Connect 13 req d 24 3902137401 CONTACT Charging 8 req
9. 90 change next to last sentence to read The output of the oscillator flips back and forth and tums the green and red LED s on and off change last sentence to read This low output turns the oscillator on triggering the green and red LED s which causes them to flash first paragraph change last sentence to read This circuit aiso activates the oscillator that flashes the green and red LED s page 9 k Radio ON OFF Sensing Circultrv change third sentence to read When the radio is on B voltage J5 pin 3 and Busy J5 pin 9 go high first paragraph change the sixth sentence to read For best results the HT600 or MTX800 radio should be adjusted to 3 4 maximum volume when pla ed into the consote On page 9 1 Microphone and Audio PA Interface change chart to read as follows METHOD S2A POSITION S2B POSITION 12W AUDIO DOWN DOWN RADIO AUDIO UP UP On page 12 d Console Disassembiv step I change sentence to read as follows To remove the volume pot board unsnap it from the bottom housing by lifting the two catches On page 14 h Solderina change any reference of SVA to read MVA l add the following information to your chart Depress PTT switch on mobile microphone Does radio transmit The MTX radio PTT switch path clo sure only occurs when proper conditions are met in communication with the base site controller signal strength proper ID available repeater etc For best results using the flow chart tests th
10. AA MOTOROLA INC MT 1000 VEHICULAR ADAPTER INSTRUCTION MANUAL MT1000 VEHICULAR ADAPTER CONTENTS SECTION PAGE FOREWORD iii et ce BE Pa dU I inside front cover SPECIFICATIONS an een a na ate ei HR ORE UE ate tet ji CHAR Tunisie aee e a nt dae equ pud cete des DESCRIPTION i GENERAL inside E eg 1 Da CONSOLES A rn Eh presse 1 3 EXTERNAL 12 WATT SPEAKER edet etas e ewe detestatur es 1 4 MOBLE MICROPHONE a adi Eg P SERRE VERE E ed on kr E ra 1 sn reete ae bm rer ete Ce et nn S D hd apu 1 INSTALLATION 1 INSTALLATION PLANNING dimos 2 2 iret ab iv ERE RO un e 3 3 MICROPHONE BRACKET INSTALLATION L 3 4 12 WATT SPEAKER INSTALLATION 50099200 3 5 ANTENNA INSTALLATION acer eet Sa a Belle 4 6 CONSOLE CABLING iii ob NE Hg e se 4 7 ANTI SKID BRAKING PRECAUTIONS nennen 5 8 INSTALLATION CHECKOUT 2 22 2 2 4 2 REMIS AT sedis 6 THEORY OF OPERATION GENERAL ass ettet iet dies eu ca uae 7 2 CIRCUIT DESCRIPTION ae ae teen te tad te gite edt e ande cu d 7 MAINTENANCE 1 P
11. can be lifted out of the bracket Unsnap the universal connector header and flex assembly from the connector housing Be careful not to damage any of the components on the flex circuit on the bottom housing snaps as itis pulled oot p To remove the lock assembly slide the bracket toward the rear out of the slots in the housing Note the position of the torsion spring so it can be reassembled correctly Lift up on the rear end of the rod and unsnap it from the bottom housing The lock assembiy can then slide out through the front of the housing e Console Reassembly Reassemble the console by reversing the disassembly procedure Be careful to completely snap all of the snaps that hold the bottom housing to the baseplate and the main PCB to the bottom housing f Safe Handling of CMOS Devices Complementary metal oxide semiconductor CMOS devices are used in the MVA While the attributes of CMOS are many their characteristics make them susceptible to damage by electrostatic or high voltage charges Damage can be latent resulting in failures occurring weeks or montbs later Therefore special precautions must be taken to prevent device damage during disassembly troubleshooting and repair The following handling precautions are mandatory for CMOS circuits and are especially important in low humidity conditions 1 All CMOS devices must be stored or transported in conductive material so that all exposed leads are shorted tog
12. d 25 3902137502 CONTACT Charging 4 req d 26 0102701290 HEADER Flex Assembly includes Items 5 823 27 3802138101 PIN Cap 4 req d 28 1505068R01 HOUSING Pocket 29 4102155401 SPRING Hellcal Exi 2 req d 30 0102701J38 ASSEMBLY Flex Dislay 31 0702151501 BRACKET Housing Top 32 1302142501 ESCUTGHEON Top 33 3002301404 GABLE Flat Volume NOTE For part number see electrical parts lisl EXPLODED VIEW DIAGRAM 19488 0 AND PARTS LIST 19 Set volume control to mid range ignition switch on press monitor button Test Handie Talkie radio and batterv according to procedure in manual Check mic connector and continuity to Check red LED check Place radio In consola corinect power cable and 1 2W or 12W ext audio power ampilfier if used START is noise heard from console or ext spkr Conn RF wattmeter and dummy load to rear of console load should be IET Depress PTT switch on moblie microphone Does radio transmit Does speaker quiet Does red light come on continuity of mic 4 conn to universal conn 1 Check coax and conn 2 Check charger If radio btty is discharged radio and console Does console have output power Apply a 1KHz signal of 13dbm between pin 5 amp pln 4 of J1 mic conn Check if extemal spkr select S2 1 is disable 1 Recheck radio
13. l Microphone and Audio PA Interface An external microphone and audio amplifier are connected to the MVA through Telco and DB 25 connectors respectively Audio path selection is mage by adjusting switches S1 and S2 white switches located on back of console The MVA is shipped standard with the 12W PA and both S1 and S2 should be in the down position For MT1000 and MTX radios the volume control is remoted to the MVA For HT600 radios either ine radio or MVA volume control can be used For best results the HT600 radio should be adjusted to 3 4 maximum volume when placed into the console All volume adjustments should be made using the MVA volume control The chart below shows other methods for routing audio METHOD 1 POSITION 2 POSITION 12 W AUDIO DOWN DOWN RADIO AUDIO UP UP Receive audio from the radio J5 pin 8 and 2 passes through volume pot R109 and attenuator resistors R110 111 and R142 to the 12 watt audio PA J6 pins 20 and 21 The 12 W squelch is controlled via transistors Q20 and Q21 When the radio unsquelches Q20 turns on and Q21 turns oft This causes the PA squelch line to go high J6 pin 5 The microphone receives its bias voltage from the MVA s 12 volt regulator through R127 and R128 to J4 pin 5 The microphone signal comes from J4 pin 5 through C103 and H126 to the radio via J5 pin 1 MAINTENANCE 1 PREVENTIVE MAINTENANCE a Periodic Inspections Slow degradation of equipment per
14. output iow This low output turns the oscillator on triggering the green and yellow LEDs which causes them to flash i Shorted Cells and Short Circuit Detect This circuit compares the voltage at the battery terminals with a preset reference voltage of 4 0V As long as the terminal voltage goes low the charging current is cut off completely thru U8 D This circuit also activates the oscillator that flashes the green and yellow LEDs Capacitor C37 100uF is used to hold the output high when the console is powered on and is also used to time the response of the short circuit detect j Dynamic Voltage Clamp As long as the voltage at the battery terminals remains below 15V the output of U3 A is held high When the battery voltage exceeds 15V the voltage at pin 2 U3 A is greater than the voltage at pin 3 U3 A This causes the output of U3 A to go low and reduces the base drive for Q2 thus limiting the terminal voltage to 15V This prevents over voltage loads and protects the radio from high voltage damage Radio ON OFF Sensing Circuitry The MVA contains sensing circuitry detecting whether the radio is on or off When the radio is on the MVA supplies an extra 70 mA of charging current io the battery to compensate for the current drawn by the radio in the standby mode When the radio is on B voltage pin 3 and Busy J5 pin 3 go high When the busy line goes high the output of U13 A will go high Option B and or th
15. side of the vehicle opposite from the braking modulator box DO NOT operate the transmitter while the vehicle is in motion with the trunk lid open c Test Procedure This test is divided to cover Several different tyoes of interference Disturbance of the electronic anti skid device can usually be detected in several dierent ways in the vehicle s braking system by the lights by any irregular audible sounds or by any change in the performance of the braking system itself NOTE During procedure steps 1 through 6 however none of Ihe above conditions should be observed With the car gear selector in NEUTRAL or PARK your foot ofi the brake pedal and the engine running at a fast idle key turn the carrier on and oft the transmitter with and without modulation Refer to the note above 9 step 1 with your foot gentiv pressing the brake pedal Refer to the note above 3 When performing this step allow at least two car lengths of clear area in from of the vehicle while it is stationary Press your foot on the brake pedal with just enough pressure to keep the vehicle from moving Put the car in a forward gear with the engine running at a fast idle then key the transmitter with and without modulation WARNING Disruption of the anti skid braking system may cause the vehicle to move forward in addition to the lights and audible sounds mentioned above 4 Drive at a moderate speed
16. speaker beeps equal fre quency number NOTE Connect the radio to a service monitor monitoring the deviation at the transmit frequencies Refer to the fol lowing chart for the test frequency combination MTX800 MTX900 Radlo 824 9875MHz 901 9875MHz d Select the modulation mode quick key either of the radio s side buttons speaker beeps equal mode number Refer to the foliowing chart for the modulation mode MTX800 Radio MTX900 Radio Mode 1 Mode 6 No Connect Tone No Connect Tone Hear Clear e Insert the radio into the pocket of the MVA and turn the vehicle s ignition to the ON position f Using the Service Monitor set it to the radio transmit frequency monitor deviation and press the key on the DTMF microphone the radio will show Tx LED from an automatic mic PTT Note the deviation ADA Ty Af FMD 1419 1 g If necessary adjust the microphone s internal adjustment to the deviation values shown as follows MTX800 MTX900 3 3kHz 1 75kHz NOTE To exit the air test mode tum the power to the radio OFF change last sentence to read For best results connect the positive lead red directly to the positive terminal and the negative lead black to the chassis On page 8 top of page replace existing chart with the following BATTERY RC CHARGING CURRENT mA CHARGING CURRENT mA CAPACITY RAPID WITH RADIO TRICKLE WITH RADIO ON OFF ON OFF Medium 5 6k 320 250 130 62 High 3 3k 430 360 160
17. units in locations where they might interfere with the vehicle operator or operating controls DON T install the units where they will be difficult for the operator to reach For vehicles with electronic anti skid braking systems reler to the Anti Skid Braking Precautions section ol this manual b Console Location NOTE f possible avoid mounting the console in a vertical position This will minimize the danger o foreign Substances being dropped or spilled into the console pocket The console should be mounted to provide 12 inches of clearance in front of the console for inserting and removing the radio A 4 inch clearance at the rear and left side of the console is necessary for connection of power microphone antenna and speaker cables a 2 5 inch clearance s required above the vents on the top of the console Consider accessibility to the controls by the operator When possible mount the console on the floor near the center of the vehicle c Microphone Bracket Location When possible mount the microphone bracket on the dash near the left side of the console The location should be within easv reach of the operator and it should be convenient to remove and replace the microphone without intertering with any of the vehicle controls CAUTION Do not attach the microphone mounting bracket to the housing of the sole d Speaker Location Select a location for the speaker that will be neither dangerous to the
18. 0 800 no external rf hookup MTX 800 MTX 800 HT800 HT600E Handie Talkie portable FM two way radios for mobile operation The vehicular adapter system consists of a console an external 12 watt speaker amplifier a hand held mobile microphone a rooftop antenna mounting hardware and cables When the radio is inserted into the console pockel for vehicular operation ihe resulting combination acts as a mobile radio with the following functions occurring automatically The vehicular adapter s external antenna is connected to the radio and the radio s internal antenna is disconnected The vehicular adapter s mobile microphone is connected to the radio and the radio s internal microphone is disconnected console s charging circuits are connected to the radio to charge the radio s battery The radio s audio output is connected to the external 12 watt speaker amplifier and the radio s internal speaker is disconnected 2 CONSOLE The NTN5612A Basic console is the vehicular adapter s central unit The Basic console includes three LEDs on the front control panel palm microphone 12 external speaker mounting hardware and power cables When the MT1000 or MTX 900 radio is loaded into place the MVA overrides the portable s volume control All MVA consoles have a key lock located below the radio pocket When the radio is loaded in the console the combined radio console operat
19. 15 25 mph with your foot off the brake pedal and have an assistant key the transmitter with and without modulation Refer to tho above warn ng Repeat step 4 with your foot lightly on the brake to turn off the brake lights Refer to the above warning WARNING Severe disruplion of the electronic anti skid braking system may cause loss of control of the vehicle in steps 6 7 and 8 6 Increase the vehicle speed to 25 30 mph Decelerate slowly and come to a stop As you doing this have an assistant key the transmitter with and without modulation Refer to the above warning S While making abrupt stops from 20 mph have an assistant key the transmitter with and without modulation Refer to ihe above warning C If no interference or disruption is noticed repeat step 7 making abrupt stops from 30 mph Refer to the above warning no malfunctions are observed in performing the above steps it can be assumed that no apparent problem exists and the car can be released to the customer If any of the above steps results in a brake malfunction contact the car manufacturer s service department as soon as possible and remove the radio from the vehicle DO NOT complete the installation 8 INSTALLATION CHECKOUT a General After completing the installation of the vehicular adapter check all electrical wiring for tight connections Also check all mechanical parts for tight and secure
20. 15uF 80 20 25V Not Used 5 4 7UF4H10 16V Not Used 82 5 SOV 4 7uF 10 16V Not Used 1UFE10 20V Not Used i 100uF220 16V 4 7uF 410 18V Not Used 4 7UFHOX 16V Not Used 2 2uF Tant 221 20 18V Not Used 330 5 50V 82pF 15 50V 4 79 194 18V 22uF 220 16V DtuF 330 69 SOV DtuF S2nF15 SOV Not Usad 1uF 10 20V 4 7UF410 16V 2242096 16V Fasi Recovery MUR405 Tape and Reel IN5391 Rectifier Rectifier Hot Carrier 49 LED Red LED Green LED Red Used Rectifier Not Used Rectiflor Not Usad Rectifior Green JACK Not Used Connector ZIFLOK Connector Modular Connector ZIFLOK Connector DB25 Connector Modular RELAY INDUCTOR Choke 1009H R41 R42 R43 R44 945 46 R47 R48 R49 R50 1 R52 R53 1854 R55 856 thru 58 R59 R60 R61 R63 R64 4805128 67 4805128M62 4805474G42 4805128M62 4805128 67 4805128 62 4805128 67 4805128 62 1780471A01 0660076A65 0660075L49 0660078A01 0660076E95 0660076F25 1702166J01 0650076F25 945P Choke Choke TRANSISTOR See Note MOSFET 521 PNP TIP32A PNP LP733 NPN MPS650 NPN SMAT 1001 Not Used PNP MMBT 3906 NPN SMBT 1001 PNP MMBT 380 Nat Used NPN SMBT 1001 PNP MMBT 3906 NPN SMAT 1001 NPN 945P NPN SMBT 1001 PNP MMBT 3906 NPN SMBT 1001 PNP MMBT 3806 N
21. G 72 U vU WALL MOUNT BRACKET DETAIL om WINDOW MOUNTING DETAIL 6 20x12 gt SELF TAPPING SCREWS rer THE REAR COVER DF THE 12W SPEAKER MUST i xi PEDI i6 TEMPASARILY REMOVED TO MOUNT THE HANGER SAACKEY REW USE TWO 6 32X1 4 PHILLIPS MACHINE SCREWS AND TWO TINNERMAN NUYS MOUNTING BRACKET DETAIL J Figure 3 12 Watt Speaker Installation Detail The wall mount bracket can be used for permanent mounting if the trunnion bracket is too large to fit in the desired area In this case the trunnion bracket is removed and the speaker is attached to the wall mount bracket bv the hanger bracket Referring to Figure 3 for installation information perform the following procedure a Using the trunnion bracket as a template drill the necessarv mounting holes and secure the bracket with the self tapping screws provided b Position the 12 watt speaker onto the trunnion bracket and secure it using the wing screws provided 5 ANTENNA INSTALLATION Install the antenna and antenna cable as outlined in the installation instructions supplied with the antenna Pertinent information on frequency matching and mounting details are also provided with each antenna NOTE The rf jack on the MVA console is a mini UHF jack and must be mated with either a mini UHF plug or a UHF to mini UHF adapter Motorola part number 5880367B22 6 CONSOLE CABLING Refer to Figures 4 and 5 bef
22. J4 pin 5 The microphone signal comes from J4 pin 5 through C103 and R126 to the radio via J5 pin 1 current is cut off completely thru U8 D This circuit also activates the oscillator that flashes the green and yellow LEDs Capacitor C37 100UF is used to hold the output high when the console is powered and is also used to time the response of the short circuit detect Dynamic Voltage Clamp As long as the voltage at the battery terminals remains below 15V the output of U3 A is held high When the battery voltage exceeds 15V the voltage at 2 U3 A is greater than the voltage at pin 3 U3 A This causes the output of U3 A to go low and reduces the base drive for Q2 thus limiting the terminal voltage to 15V This prevents over voltage loads and protects the radio from high voltage damage k Radio ON OFF Sensing Circuitry The MVA contains sensing circuitry detecting whether the radio is on or off When the radio is on the MVA supplies an extra 70 mA of charging current to the battery to compensate for the current drawn the radio in the standby mode When the radio is on B voltage J5 pin 3 and Busy J5 pin 3 go high When the busy line goes high the output of U13 A will go high Option B and or the output of U13 A pull U12 pins 3 and 4 low This causes U12 pins 1 and 2 to go high and supply bias to U11 pin 13 This switches R98 into the circuit and modifies the charging current to supply the extra 70 mA
23. PN SMBT 1001 RESISTOR Fixed 03 5 1 8W unless stated 16k 41 5 1kE1 1Meg 20k 196 3 31 1Meg 10k 100k 200k 10k Not Used 33k 47K 1Meg R156 R157 R158 159 0660076817 0660076801 0660076 77 0660076 0 0660076 0 0660076818 0660076 01 0660076A73 0660076B07 0660076B01 0660076B05 0660076A73 0660076A85 0660076808 0660076825 066007667 R160 thru 164 18 ELECTRICAL PARTS LIST 5102198 29 5105469 49 5102198J28 5102198J19 5102198J19 4805129M37 4805129M61 4805129M25 4811058B05 0180743T91 0200115123 0300139498 0300139913 CIRCUIT MODULE See Note PWM UC2843A Voltage Reg 12V LM340LA Quad OP Amp LM2902D Quad LM2901D Not Used Diode Array Voltage Reg 5V Diode Array Quad MMPQ3904 Quad LM2901D DIODE See Note Zener 10V Zener 18V Zener 5 1V Zener 30V ASSY Mic Bracket NUT Mounting 10 32 Hex SCREW Mounting 10 32x5 8 Hex SCREW Mounting 8 18x1 2 LUG Ignition LUG Battery NOTE For optimum performance order replacement diodes and transistors by Motorola part number only VIEWED FRON SIDE I OL DEPF 2001 0 16 CIRCUIT BOARD COMPONENT LAYOUT DIAGRAM VIEWEO FRON SIDE I 16 CIRCUIT BOARD COMPONENT LAYOUT DIAGRAM TO 12 WATT SPEAKER FROM MICROPHONE LED DISPLAY BOARD
24. REVENTIVE menn nnnm 10 2 CGORRECTIVEMAINTENANG Ein na d l RN Med apes 10 REPLACEMENT PARTS ORDERING ae inside back cover RELATED PUBLICATIONS AVAILABLE SEPARATE LY MT1000 VHF Service Manual T ED 68 81061 40 MT1000 UHF Service 2 68 81061 45 MT1000 Theory Maintenance 2222222 68P81061C50 Operating InStr cllorl8 ue pedet e one 68P81062C70 Reducing Noise Interference in Mobile Radios LL ee eee 68P81109E33 5 Motorola MT 1000 HT600 HT600E HT800 MTX 800 MTX 900 Handie Talkie and Private Line are trademarks of Motorola Inc t 1989 by Motorola Inc Portable Products Division 8000 W Sunrise Blvd Fi Lauderdale FL 33322 9934 Instruction Manual Printed in U S A 4 88 Rights Reserved 68 81062 75 SPECIFICATIONS CAPACITY DIMENSIONS LxHxW WEIGHT without portable radia NOMINAL INPUT VOLTAGE CURRENT DRAIN Radio OFF Radio ON Transmit CHARGE RATE ANTENNA INPUT IMPEDANCE AUDIO OUTPUT at less than 5 distortion One MT1000 HT600 MTX 800 MTX 900 HT800 or HT600E radio 265 5x158 5x83mm 10 43 x6 24 x3 26 1 70kg 3 76165 13 8Vdc 11Vdc min 16Vde max negative ground CHARGED BATTERY DISCHARGED BATTERY 200mA 600mA 300mA 750 1 2 1 2 Three hours Rapid Charge Sixteen h
25. UNIVERSAL CONNECTOR VIA FLEX DATA A NC GND GNO DATA PA 50 NC EXT SPKR SPKR COM PAC RT NC FILTERED A NC EXT MIC EXT PTT 16 5 8USY NC NC PA AUDIO COM PA AUDIO IGN Sw FILYERED Ar TUS NC UNFILTERED A SW HEADLIGHT BUSY DATA MONITOR EXT EXT REMOTE POWER ND GND GND OPTION DATA BUSY 5v TO CR28 cR2S CR30 HEADLIGHT 5 CR28 TO cR29 EXT MIC EXT SPKR B OPTION EXT PTT GND EXT SPKR SEL SPKR COMM 8USY SENSE GND GND GND GND 2 RUS 22k 491 4 1 dE Ra 1 65 Nc tk R32 27 gt bt i ml RIBO CIOOL sh a 023 RIO Ri 883 22 34 3 47k 1k Ik 5 RI25 1 so i Y m i RES Your JOD1Z NC TPI2 GNO Ne To Ther it 57 56 125 1L NC 1330er Tela eis PALTEHING REGULATC cm Ft 1 ib c2 L2 R7 4 T 10833066 7A 68 TO 1 R142 270 V 8140 R24 8155 5 330 mos a 1k RI39 033 RI38 1175 1 18k 3 4 44 2 t 2 POCKET LIGHT RIGO RISI 8162 8153 RIBS RUB 28105 024 d ff 770 120 120 120 120 IBk 4 7 t 022 CRAB 120 247 VRI VRE lok Tz2ur
26. be cleaned when the console must be disassembled for servicing or repair The only factory recommended liquid for cleaning the circuit boards and their components is isopropy alcoho 70 by volume NOTE When the MVA is used under adverse marine conditions the circuit board must be cleaned of salt deposits at least twice a year Isopropyl alcohol may be applied with a stiff non metallic short bristled brush to dislodge embedded or caked on materials located in hard to reach areas The brush stroke should direct the dislodged material out and away from the inside of the console Alcoho is a high wetting liquid and can carry contamination into unwanted places if an excessive quantity is used Make sure that the controls are not soaked with the liquid Upon completion of the cleaning process use a solt absorbent lintless cloth to dry the area NOTE Always use a fresh supply of alcohol and a clean container to prevent comtamination by dissolved material from previous usage 5 Reassemble the console disassembiv procedure reversing the 2 CORRECTIVE MAINTENANCE a Introduction Efficient corrective maintenance requires an orderly and logical troubleshooting procedure for localizing malfunctions in the MVA s internal or external circuits Troubleshooting and repair will be greatly simplified by becoming familiar with the overall MVA and radio operation This section provides detailed information required t
27. d If the trunnion bracket is to be mounted on the floor or vehicle console bend the tabs on the bracket to conform to the shage of the floor or vehicle console see Figure 1 b Position the console onto the trunnion bracket so that the knurled fittings of the console and trunnion bracket mesh together c Place the lockwashers on the Allen head screws then insert the screws through the trunnion bracket and screw them into the console Since the console will have to be removed later to connect the cables do not tighten the screws at this time are f y p is DIA er C E N EN A 4 4 P L i 4 rias del f 1 NO fO 6x 54 SELF Let 2 516 24x 3 B ALLEN H 4 LLEN HES 3 556 LOCKWASHER Figure 1 Console Installation Detail 3 MICROPHONE BRACKET INSTALLATION Referring to Figure 1 crimp the S hook supplied with the mounting hardware to the microphone cable approximately 1 5 inches to 2 inches from the connector end When hooked to the baseplate this prevents inadvertent damage to the cable connections when using the microphone Care should be taken to prevent cutting into the cable jacket when installing the S hook Referring to Figure 2 use the microphone mounting bracket as a template and drill two 1 8 inch holes Attach the microphone bracket to the mounting surface with the two self tapping screws provided Be sure to leave sufficient room above the brack
28. e console g Connect speaker cable plug P6 to console jack JB applying three in Ib of torque to each screw Attach the strain relief hook to the console h Connect external antenna cable plug i Connect microphone cable plug P4 to console jack J4 Attach the strain relief hook to the console j Make certain that no radio is installed in the console then replace the S amp luse ANTI SKID BRAKING PRECAUTIONS General following transmitter installation suggestions and test procedures are recommended for vehicles with electronic anti skid braking systems b Installation Suggestions Determine the location of the braking modulator box in the vehicle This box is located in the trunk of Chrysler Corporation cars and either in the trunk or under the dash in General Motors and Ford Corporation automobiles A service manual may be helpful in finding the location of the braking modulator box Install the console in accordance with the following recommended guidelines the braking modulator box is mounted in the right side of the vehicle mount the console on the left side to give as much space as possible between the box and the console f the bax is mounted on the left side of the vehicle mount the console on the right side Use the shortest practical length of Motorola coaxial cable Mount the antenna on the side of the car trunk opposite from the braking modulator box e Route all cables along the
29. e output of U13 A pull U12 pins 3 and 4 low This causes U12 pins 1 and 2 to go high and supply bias to U11 pin 13 This switches R98 into the circuit and modifies the charging current to supply the extra 70 mA Microphone and Audio PA Interface An external microphone and audio amplifier are connected to the MVA through Telco and DB 25 connectors respectively Audio path selection is made by adjusting switches S1 and 52 white switches located on back of console The MVA is shipped standard with the 12W PA and both S1 and S2 should be in the down position For MT1000 and MTX radios the volume control is remoted to the MVA For HT600 radios either the radio or MVA volume control can be used For best results the HT600 radio should be adjusted to 3 4 maximum volume when placed into the console All volume adjustments should be made using the MVA volume control The chart below shows other methods for routing audio METHOD 51 POSITION 52 POSITION 12 W AUDIO DOWN DOWN RADIO AUDIO UP UP Receive audio from radio J5 pin 8 and 2 passes through volume pot R109 and attenuator resistors R110 111 and R142 to the 12 watt audio 46 pins 20 and 21 12 W squelch is controlled via transistors 020 and 021 When the radio unsquelches 020 turns on and Q21 turns off This causes the PA squelch line to go high J6 pin 5 The microphone receives its bias voltage from the MVA s 12 volt regulator through R127 and R128 to
30. e radio should be placed in the air test mode See the applicable service manua for details On page 1 delete the following information from your chart 1 2 W ext audio Check if ext spkr select S2 1 is enable yes no Enable S2 1 Mav 22 3 of 3 FMR 1412 1
31. e switching regulator is required to step up the vehicle s voltage to the constant 16 5V45 required by the charging circuit to provide a constant rate of charge The switching regulator operates at 40KHz and the input voltage is stepped up to 16 5V The output capacitors C8 to C10 reduce the ripple voltage to less than 100mV for an 800mA load 25 C d Current Regulator The charger is receptive to two different charge rates A three hour fast charge 0 4C and a sixteen nour Slow charge 0 16 Features for dead battery operation during transmit PTT with constant 800mA charge rate and extra 70mA charging if the radio is on is incorporated The charging current is controlled by a current regulator with negative feedback The current regulator is comprised of iransistor circuits Q2 thru Q6 U11 U12 a differential amplifier U3C and single input amplifier U3D Under normal conditions Q5 and U12 C are in saturation ON giving a rapid charge rate of 0 4 C When the radio is loaded the momentary increase in charging current through R19 10 results in an increase in differential amplifier output pin 8 and input to the single input amplifier pin 13 Its output drops and the base drive of Q2 and Q3 is reduced Therefore the charging current drops and maintains constant charge rate according to the sensing resistors of the battery Diodes CRA transistor Q4 and resistor R15 provide for a constant current input o
32. e volume pot knob out of its shaft Disconnect the universal connector flex from its connector J5 using the same procedure as explained in Step d Unsnap the power transistor clip Referring to Figure 5 and using the small screwdriver unsnap the five snap catches holding the main PCB The board should be pulled directly upwards to allow the microphone connector to slide from its mating grooves The main PCB is still attached to the bottom housing by the ribbon cable connected to the volume pot board The main board can be flipped forward to access the underside without removing the volume pot board To remove the volume pot board unsnap it from the bottom housing by lifting the totwo catches m Referring to Figure 6 and using a small screwdriver unsnap the six catches that hold the basepiate and the bottom housing together n Lift the plastic bottom housing away from the baseplate Id 5 Figure 5 Top View of PCB MAEPF 200 19 0 MAEPF 20020 0 Figure 6 Top View of Bottorn Housing 0 The universal connector housing can only be removed after the bottom housing is removed from the baseplate Locate the two snap features about 1 2 on either side of the contact pins Using the small screwdriver push the snaps down and slide the connector housing and lock bracket toward the rear of the console The bracket will only slide about 1 2 back and then the connector housing
33. es as a mobile two way radio Ihe radio must have a battery attached when it is inserted into the console this battery will b2 automatically charged when the radio is inserted A kev lock is provided on the console to minimize theft when the vehicle is left unattended Appropriate mounting hardware is provided with the console to facilitate mounting at any suila e location 3 EXTERNAL 12 WATT SPEAKER The NSN6054A 12 watt speaker provides 12 watts of audio oupu power for use in high noise level environments The audio level of the speaker can be adjusted from console s panel 4 MOBILE MICROPHONE Three different tvpes of mobile microphones are available for the MVA the HMN1056A compact microphone the 1035 palm microphone and the HMN1037A DTMF palm microphone she microphones are palm type weatherproof cartridge microphones with transistorized preamplifiers as an integral part of the cartridge Each microphone is equipped with a push to talk switch on the side has a coiled cord and an 8 pin connector which plugs into a jack on the left side of the console Mounting hardware is provided as part of the console package 5 RO0OFTOP ANTENNA To enable the vehicular adapter to function as a mobile vehicular radio an external rooftop antenna must be ordered from C amp E Parts This antenna is cut to correspond to the frequency band of the radio used with the vehicular adapter Refer io the MODEL CHART f
34. et for insertion and removal of the microphone When connecting the DTMF palm microphone to the MVA press the 1 tone and tune the microphone s adjustable DTMF level to 60 of the radio s system deviation 3kHz on a radio with 5kHz maximum system deviation or 1 5kHz for MTX 900 radio 1 8 01A HOLES SELF TAPPING SCREWS NO 8 18X 1 2 19494 0 Figure 2 Microphone Bracket Installation Detail 4 12 WATT SPEAKER INSTALLATION The 12 speaker includes a trunnion bracket a hanger bracket and a wall mount bracket permitting the speaker to be mounted in a variety of ways bracket is used to permanently mount the speaker on the dashboard or accessible iirewall areas while permitting the speaker to be tilted to a desired angle hanger bracket permits temporary mounting such as on an automobile window The speaker must be removed from the trunnion bracket to use the hanger bracket DASHBOARD FIREWALL ONSOLE OR FLOOR 4 5 TAUNNIDN BRACKET uc lt p ag EM HOLE SIZE 30157 IN E i BENO CONFORM 4 TO FLDOR OR CCNSOLE FOR MQUNTING 1 ur 73 mi HANGER B ACKET PRALIPS MACHINE SCREW 32 1 47 ISEE NOTE HANGER BRACKET HOLE SIZE DIA WALL MOUNT BRA Nus 10 WINDOW i FIREWALL MOUNTIN
35. ether CMOS devices must not be inserted into conventional plastic snow or plastic trays of the type that are used for storage or transportation of other semiconductor devices 2 All CMOS devices must be placed on a grounded bench surface and the technicians must ground themselves prior 1o handling the devices This is done most effectively by having the technician wear a conductive wrist strap in series with a 100k ohm resistor to ground 3 Do not wear nylon clothing while handling CMOS circuits 4 Do not insert or remove CMOS devices with power applied Check all power supplies to be used for testing CMOS devices and be certain that there are no voltage transients present 5 When straightening CMOS device leads provide ground straps for the apparatus used 6 Use a grounded soldering iron 7 All power must be turned off in a system before printed circuit boards containing CMOS devices are inserted removed or soldered g Parts Replacement and Substitution When detective parts or components must be replaced identical parts should be used tf the identical replacement part is not locally available check the electrical and exploded view parts lists for the correct Motorola part number Order the part from the nearest Motorola Communications Parts office as listed under Replacement Parts Ordering on the inside back cover of this manual If for any reason substitutions must be made reinstall ihe exact
36. f transistor Q5 turning on Q5 independent of battery terminal voltage and charge rate Together with Q6 this constant current source can be switched off for trickle charging by switching off Q6 Q4 and Q5 With Q5 turned off R16 R154 and R153 are added in the charging path The following chart lists the three differeni battery capacities RC s and repid charging current and trickle charging current BATTERY CHARGING CURRENT mA CHARGING CURRENT mA CAPACITY RC HAPID WITH RADIO TRICKLE WITH AADIO OFF ON OFF 500 5 6K 320 250 130 62 900 3 3K 430 360 160 90 950 3 3K 430 360 160 90 At dead battery operation the console provides a constant 800mA to the radio for transmitting Pressing the PTT switch causes Q27 to turn off and U12 pins 7 and 8 to go low This switches off U12C and the charging current is no longer controlled by RC but is controlled by R36 instead e Battery Sense Detect With no battery in the charger the voltage at U3 B pin 6 is approximately 9 6V holding the output of U3 B pin 7 low When the radio is loaded in the console U12 C conducts Voltage at U3 B pin 6 drops to approximately 1 4V This drop in voltage results in a high output at U3 B pin 7 turning on Q12 and charging LED CR28 f Temperature Window and Bistable Multivibrator Comparators U4 B U4 C and U4 D sense the RT line and set the cold and hot sides of the temperature window respectively
37. formance if left uncorrected can lead to costly equipment downtime and repair Preventive maintenance PM differs from corrective maintenance in that minor equipment operating deficiencies can be corrected before breakdown occurs Periodic and systematic PM inspection schedules should be set up to keep the equipment and failure free The frequency of PM schedules will be determined by the environment in which the equipment is being used The periodic inspections should include e Visual inspection of cables for frayed or oxidized leads Ensuring that battery connections are free from Oxidation or corrosion Checking the external rooftop antenna for clean and rust free mounting Checking for tight connection of the console to antenna cable connectors Checking the system ground lead black for clean and proper electrical contact Checking all jack and plug connections for tightness and good electrical pin contact Pins should be visually checked for wear Checking for loose components Checking component assemblies and mechanical assemblies for tight and secure installation The majority of failures is directly related to poor installation Inspecting all mounting brackets and associated mounting screws for secure and tight mounting Checking for overheated or discolored components Checking for proper 13 8Vdc vehicular alternator charging Vehicular voltage can vary fr
38. igid Circuit Boards The MVA uses bonded multi layer printed circuit boards Since the inner layers are not accessible some special considerations are required when soldering and unsoldering components The printed through holes may interconnect multiple layers of the printed circuit Therefore care should be exercised to avoid pulling the plated circuit out of the hole Closely examine your work for shorts due to solder bridges 2 Flexible Circuits The flexible circuits are made from a different material than the rigid boards and different techniques must be used when soldering Excessive prolonged heat on the flexible circuit can damage the material Avoid excessive heat and excessive bending For parts replacement use the ST 1087 Temperature Controlled Solder Station with a 600 or 700 degree tip and use small diameter solder such as ST 633 The smaller size solder will faster and require less heat being applied to the circuit POWER DISTRIBUTION TABLE 024 17 CRI U2 ug Q2 IGNITION PIN PIN2 PN4 CATH PIN 1 PIN3 B E C NORADIO 13 8V i38V 13 8 ov E in IN MVA IGNITION ONRADIO 11 8V 13 87 ov 13 8V 12V 135V 16 8V 16 2V IN MVA CHARGER SECTION VOLTAGE MEASUREMENTS 06 U3C 020 021 RAPID CHARGE C PINS 12W SPEAKER RED LED 02V 6 02V SQUELCHED HI to TRICKLE CHARGE
39. mounting Check for proper operation of the console microphone speaker and radio as described in the operating instructions Motorola publication 68 81061635 If alternator or other vehicular noise is present in the received signal or in the transmission reter to Reducing Noise Interference in Mobile Two Wav Radios Motorola publication 68P81109E33 This publication may be ordered separately from Motorola Communications Sector National Parts Department THEORY OF OPERATION 1 GENERAL The MVA is compatible with HT600 MTX900 MT1000 HT800 and HT600E FM two way radios The resulting combination of ine console and portable radio gives the same or better performance as a standard mobile system The MTX 800 radio can also be placed in the MVA however the MTX800 does not have the ability to port external rf Connection between the radio batterv and the console is made through the charger contact block mounted on the printed circuit board in the rear of the radio pocket The contacts on this block and the associated circuitry automatically charge the portable radio battery Connection between the console and the portable radio functions is made through the portable radio control top universal contacts When the portable radio is inserted into the console pocket and pushed in the radio universal contacts are automatically engaged by ihe MVA pogo pins and all basic portable radio functions are available to the cons
40. n is obtained by connect ing the rooftop antenna coaxial cable end to an adapter supplied with antenna kit RAF4001ARG The adapter should be substituted for the radio antennna before the radio is loaded into the MVA On page 1 1 GENERAL third paragraph change the following sentence to read The vehicular adapter s external antenna is connected to the radio and the radio s internal antenna is disconnected For MTX800 radios the radio s internal antenna is not disconnected On page 1 4 MOBILE MICROPHONE add the following paragraph Three different types are available the HMN1035A palm microphone is shipped standard with each vehicular adapter while the others are optional Of the three types of microphones DTMF palm microphones HMN1037A and HMN3013A are unique because they have an internal tone level adjustment that must be set during installation On page 3 3 MICROPHONE BRACKET INSTALLATION third paragraph add the following sentence Because the procedure for setting tone levels for trunked radios is more complex than conventional radios follow the DTMF adjustment procdure as follows For adjusting the microphone tone level trunked radios perform the following steps a Remove the portable radio from the MVA b Turn the radio on and enter it in the air test 7 condition temporary short between accessory connector terminals 5 and 6 c Select a test frequency quick key the radio s PTT button to frequency 2
41. o isolate malfunctions to the MVA s internal or external circuits The troubleshooting chart at the end of this section provides information on possible circuit failures related symptoms and suspected malfunctioning stages Generally it may be assumed that if the MVA is totally inoperative the vehicle s battery is completely discharged the fuse is blown or the power lead is opened However if the MVA is partially operative it may be assumed that the batteries are serviceable and that one or more internal or external functional MVA circuits are defective or marginal Using diagrams the troubleshooting chart the voltage table and deductive reasoning the defective circuit may readily be found To further aid in analyzing the symptoms and possible causes of the malfunction check ri power output using an in line wattmeter audio deviation and current drain Once the general problem area of the MVA is identified careful use of a dc voltmeter ohmmeter and or oscilioscope should help isolate the problem to a defective component b Test Equipment and Service Aids The RECOMMENDED TEST EQUIPMENT chart lists the test equipment recommended to properly service the MVA Refer to the service manual for the associated radio for the recommended radio test equipment For field servicing the vehicle s battery is an adequate power source Battery operated test equipment is recommended when available RECOMMENDED TEST EQUIPMENT
42. ole On the basic model NTN5612A all basic portable radio controis remain with the radio except for the volume control when ihe 12W speaker option is used The mobile microphone and anterna are also automatically connected to the portable radio when it is inserted into the console pocket 2 CIRCUIT DESCRIPTION a General Reier to the schematic diagram The console is powered directly from the vehicle battery and through the vehicle ignition switch The console consists of battery charging interface switching regulation microphone and audio PA interface capabilities b Ignition and RT Interface Turning the ignition switch on causes the car ignition voltage to be supplied at J7 pin 2 If a radio is in the MVA ground will be present at JS pin 5 This ground will provide a biasing path which turns Q22 on When 022 is on 024 is turned on and switches the relay 1 The relav supplies the MVA with power for all circuitrv When the RT switch 51 is turned off J6 9 is grounded and the RT is disabled When the RT switch is on and a radio is in the MVA 023 is saturated J pin 9 is low and the RT is still disabled When the radio is removed trom the MVA and the RT switch is 023 is off and 46 pin 9 is high and the is enabled c Switching Regulator Due to the variation of the vehicle s battery voltage of 13 8V 20 th
43. om as low as 12 9Vdc to as high as 18Vdc without being evident to the operator however it can affect MVA operation b Cleaning Procedures In areas of high dust or salt conditions periodically check the mechanical operation of the console s battery contacts If contact movement requires excessive effort clean any dust or salt deposits from the moving parts as described below Cleaning may be accomplished by performing the following procedure 1 Remove the console from the vehicle and place it rightside up on a flat working surface The working surface should offer protection from scratching to the console s surfaces 2 Referring to the Disassembly Reassembly Procedures paragraph d in the CORRECTIVE MAINTENANCE section of th s manual disassemble the unit for cleaning 3 Clean the external surfaces of the console using the recommended cleaning agent These surfaces should be cieaned whenever a periodic visual inspection reveals the presence of excessive dust grease and or grime The only recommended agent for cleaning the internal and external plastic MVA surfaces is a 0 5 solution of a mild dishwashing detergent in water one teaspoon of detergent per gallon of water The effects of certain chemicals and their vapors can be harmful io some types of plastics Aerosol sprays tuner cleaners and other such chemicals should be avoided 4 The internal circuit boards and components should ordinarily
44. operator nor damaging lo the speaker A trunnion bracket is provided for mounting the speaker The speaker is normally hung under the dash near the right side of the console however the trunnion bracket permits mounting the speaker against a wall or other vertical surface if desired e Antenna Location Complete antenna installation instructions are supplied with each antenna ordered Refer to those instructions for all information pertaining to the antenna Also refer to the SAFETY INFORMATION paragraph in the FOREWORD of this manual for additional information ft Battery Connections Determine the best cable route from the rear of the console to the vehicle battery through the engine firewall The best route should include the shortest path to the battery terminals yet provide the cable with protection from engine heat Be sure the supplied grommet or similar protective measure is used wherever a cable must pass through a hole in a metal panel such as a firewall The power cables must be routed in a way that protects them from being pinched or crushed For best results connect the positive and negative leads directly to the battery terminals 2 CONSOLE INSTALLATION Referring to Figure 1 install the console using the following procedure or modify the procedure as necessary to conform to the vehicle type a Using the trunnion bracket as a temolate drill the mounting holes and mount the bracket with the hardware supplie
45. or specific antenna model numbers and frequencies INSTALLATION 1 INSTALLATION PLANNING a General Before starting the installation determine the location of the console microphone and 12 watt speaker Also check the mounting penetrations required On most vehicles it is necessary to penetrate firewall to reach the battery Check the opposite side of the firewall for cable clearance before drilling holes and protect the cable where it passes through the firewall by using the supplied grommets or other similar protective measures Because of the wide variations in vehicle design these instructions may be modified to suit each particular installation requirement A properly installed MVA will minimize service calls and equipment downtime Consider the following guidelines when planning the installation DO use all mounting holes provided DO use lockwashers where provided DO ensure that unit cables are not placed under stress are not weathered and are not subjected to damage due to engine heat DO follow proper A and A connections DO tape al splices securely e DON T attach the units to any part of the vehicle that is not rigid or is subject to excessive vibration DON T install units in areas where rain or snow can easily get into them such as next to a vehicle window which may be left open DON T dress cables over sharp edges that could cause wear or tearing of cable insulation DON T install the
46. ore routing or connecting any console cable As shown in Figure 5 the console is used with a negative ground system only The console should be cabled using the following procedure d CAUTION 1 Remove the 5 ampere fuse from the power cable red wire before proceeding NOTE Due to space restrictions it may be necessary to remove the console before making connections to the connectors at the back of the console 1f this is the case make the connections and re mount the console before replacing the 5 amp fuse Route the main power cable through the firewall and into the battery compartment Use an existing opening or if necessary drill a 3 4 inch hole through the firewall Insert the grommet provided with the mounting kit into the hole to prevent damage to the power cable Connect the black lead to the chassis of the vehicle t is not good practice to connect the black lead to he negative battery terminat the MVA could be damaged if Ihere were a malfunction in the vehicle s electrical system Connect the red lead to the positive battery terminal Ensure that the plug and jack in the wire are connected firmly together Connect the yellow lead to the switched side of the ignition circuit e Dress the cable so that it does not obstruct any vehicle controls or touch any hot or moving parts of the engine Connect power cable jack J7 lo console plug P7 Attach the strain relief hook to th
47. ours Standard Charge Batteries 50 Ohms 500mW with Internal Speaker 12W with External Speaker MTX 800 radios have no external rf hookup Optional MODEL NUMBER NTN1048A DESCRIPTION Basic Package NTN1050A Enhanced Package ITEM NO NTN5612A gt lt 7 DESCRIPTION Charging Console Basic 5613 Charging Console Enhanced NSN6054A 12 Watt Speaker Speaker Adapter HMN1035A Palm Mobile Microphone 1037 DTMF Palm Microphone gt lt gt x gt lt gt lt HMN1056A Mini Mobile Microphone 2 gt lt lt lt gt lt gt lt TAD6111A Antenna 1 4 Wave Rooftop 136 144 MHz TAD6112A Antenna 1 4 Wave Rooftop 144 152 MHz NTN5489A TADEI13A Antenna 1 4 Wave Rooftop 152 162 MHz TAD6114A Antenna 1 4 Wave Rooftop 162 174 MHz RAE4012ARB Antenna 5dB Gain Rooftop 406 420 MHz RAE4014ARB Antenna 5dB Gain Rooftop 445 470 MHz RAE4015ARB RAE4016ARB KEY X ITEM INCLUDED A ALTERNATE ITEM SUPPLIED CHOICE DEPENDS UPON FREQUENCY Antenna 5dB Gain Rooftop 470 494 MHz Antenna 50B Gain Rooftop 494 512 MHz 20088 0 Specifications subject to change without notice DESCRIPTION 1 GENERAL The Basic Motorola Mobile Radio Adapter is a vehicular mounted unit used to adapt 1000 111760
48. replacement part as soon as possible to ensure optimum performance The substituted part must have identical electrical characteristics and must have equal or higher voltage and current ratings If it is necessary to replace any of the transistors that mate against the heat sink fins on the chassis be 13 sure to form new transistor s leads like those of the original part so that the transistor lies flat against the insulator when clamped the transistor clip against the heat sink fins h Soldering Leadiess component technology requires the use of specialized equipment and procedures for repair and servicing of the SVA you are not totally familiar with leadiess component repair techniques it is strongly recommended that you either defer maintenance to qualified service personnel and service shops or take the recommended video taped component repair training program 3 VID 952 This is of paramount importance as irreparable damage to the SVA can result from service unauthorized persons Unauthorized attempts to remove or repair parts mav void anv existing warranties or extended performance agreements with the manufacturer Special care must be taken to be as certain as possible that a suspected component is actually at fault This special care will eliminate unnecessary unsoldering and removal of parts which could damage or weaken other components or the printed circuit board itself 1 R
49. t the rear of the housing Disengage these catches one at a time while applying pressure to separate the top and bottom housings These catches can only be reached from the underside of the console Lift the top housing from the rear of the MVA so the front hooks in the bottom housing near the volume knob can slide out of their mating 51015 Set the top housing to the side away from the pocket since there is still a flex circuit connection to the top housing With thumb and forefinger grasp the top edges of connector J3 white and l ft up to disconnect the LED circuit flex The connector will move upward about 1 8 but does not separate from the PCB fully The flex circuit can now be pulled out of the connector Position the pocket housing at its highest position Unsnap the front two guide pins of the pocket housing from the guideways by bending the left guideway and pushing the pocket housing upwards LOCATION FOR SCREWDRIVER LOCATION FOR SCREWDRIVER WV Figure 4 Disengaging the Two Catches MAEPF 20018 O h i k I Repeat Step 6 for the rear guide pins Unhook the two helical springs from the baseplate caiches NOTE Whenever the pocket is removed from the assembly steps e thru 9 it is recommended that all four cam shafts mate to the pins on the pocket on the bottom housing be wiped clean to remove any foreign material To accomplish this use a dry cotton swab Pull th
50. urns off and all charging stops 04 8 going low also results in the enabling of the oscillator and the LEDs will flash Due to the linearity of RC with charging current resistor R96 is added to compensate for 900mAH and 950mAH battery capacity Resistors R98 and R100 provide an extra 70mA charging current rapid and Slow when the radio is on g The oscillator circuit turns the green and yellow LEOs on and off flashing indicating that a problem shorted or open cells shorted terminals is detected with the battery or the contacts when the output of the short circu detector circuit U5 C pin 13 or the battery open circuit detector U5 D pin 14 goes low This pulls pin 7 of U5 B lower than pin 6 and the output of the oscillator U5 B pin1 changes from high to low Hence C38 discharges through R80 and R81 until the voltage falls below the oulput at pin 7 of U5 B and toggles the O P again The output of the oscillator flips back and forth and turns the green and yellow LEDs on and off If a problem occurs during the charge complete cycle onty the yellow LED will flash Battery O C Open Circuit Detector During normal operation pin 9 of US D is higher than pin 8 of US D unless an open circuited battery is detected RC present but no charging current The low impedance of RC causes the differential operational amplifier output to go low pulling pin 9 of U5 D lower than pin 8 of U5 D and thereby pulling the
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