Specifications (W370/W375)
Contents
1. b Vibrator defective Replace the defective vibrator 10 No or weak audio when using a Headset plug not fully pushed Ensure the headset plug is fully seated in the headset jack If the seated is OK proceed to b b Headset defective Temporarily replace the headset with a known good headset Ensure good seated Place a call and verify improvement in headset audio If fault is cleared replace the defective headset 11 Camera module not functioning for Camera module defective Replace the camera module as described in W375 the procedures Verify that the fault has been cleared and reassemble the phone with the new camera module Programming Software Upgrade and Flexing Contact your local technical support engineer for information about equipment and procedures for flashing and flexing 40 Aug 15 2006 Part Number Charts Level 1 2 Service Manual Part Number Charts Figure 47 W375 Exploded View Diagram 41 Aug 15 2006 Part Number Charts 42 Figure 48 W370 Exploded View Diagram Aug 15 2006 W370 W375 Level 1 2 Service Manual Part Number Charts Exploded View Parts List Table 3 W375 Exploded View Parts List Number Part Number gawk ac 003 oos 765 HSOQOINV T CAMERA HOO CM 5628VGACHICONY 6610880001W GJ Fws fosan O o 22 6320500001W G_ SMT LONIB TJ meomeoacso f 9 253 21H8003061W__ POBASSY H8O GF O9T REVOOFS CO so 5801850001W G mept L T O f2. 2006 Level 1 2 Service Manual General Functions General Functions Controls Indicators and Input Output I O Connectors The W370 W375 phone s controls are located on the front side of the device and on the keyboard as shown in below Indicators icons are displayed on the LCD Earpiece Menu Key Listen to your voice calls Open a menu when it amp messages appears in the display Right Soft Key Perform functions identified by right display prompt Left Soft Key Perform functions identified by left display prompt Message Key Web Browser Key Access the Message menu Volume Controls Power End Key Send Answer Key Make amp answer calls Press in idle screen to see the Press amp hold to turn the phone on off Press amp release to end phone calls exit menu system recently dialed calls Navigation Key Mini USB Connector Scroll up down left or right Change the battery or connect to a PC Headset Jack _ Battery Indicator __ Message Indicator Call Indicator Camera Lens Battery Headset Jack Insert the headset accessory for handsfree use Figure 1 Phone Controls Menu Navigation W370 W375 telephones are equipped with a simplified icon and graphical based user interface See the table below for details of the W370 W375 menu structure A five way navigation key allows you to move easily through menus and confirm your
3. so 264JH80001W cover JHSOPOSIVER O f 9 7802 2826480001 KBUPPC H8OIKEF 1622 BLACK f 9 303 3028R80001W__ MIC HOLD F80RUBBER BLAGK 9 so 2557H80001W LANYARD L O f 9 sos 2888 HB00O1NV ANGEKe H8OPOBLACK 9 306 3106R80001W__ VOLKEY HO RUBBER SILVERT 9 sor 3101H80001W DIALKEY HBO RUBBER BLAGK28 f 9 so 3041H80001W SPRING FB0C1720481250248 f 9 so 28A1R80001W ANTASSY HBO EUTRIBAND f 310 3109R80001W MET DOME heogerrogs on s06aHe0001W E 9 312 3052R80001W SHIELD KBOSUS30 40 294211 50 MGOV J H80 RUBBER 30 18 4 4 7 sm4 308LF80002W BTB SPON H8O PORON 28 STKB f 315 302BH80002W_ RUBBERPAD H80 TPU SILVERAUDO 3 3028H80001W RUBBERPAD HBO TPUSWERUSB f KB LOW C LT 318 3028R80001W__ RF COV_ HeoRUBBERSIVER 37 264AR80001W LEDLENS HBOMRSB BLAGK SS s 2917480001 DISLONASY L H o f 321 H80 PORON 4 12 0 3 CAMERA m H80 PORON 7 5 1 0 3 DIS i 828 305AR80001W_ BRACKET H80 8U8304 3962903 f 324 302AH80001W TJ RUBBER H8086 94 4 3VGAGOVER 825 302AH80003W RUBBER H80 RUBBER TRANSPARENTLED 326 302AH80002W TJ RUBBER 80 107 7942VGABASE 9 827 2616180001W_ BISUPPASY J HBOBLAGK T 828 aao7tte0otW HINGE H96 FERAUFT M955PREXCO f s29 264 H80OO VJ LGDLENS H80 MR58 TRANSPARENT f 332 302BH80007W_ RUBBERPAD HB0 SLICON 67 WAITEHINGE f 850 3801745101W SOREN TORXMITASBLA
4. W370 W375 telephones support GPRS class 8 and SMS in addition to traditional circuit switched transport technologies GPRS where available provides substantial increases in mobile data communications performance and the efficient use of radio spectrum Data transmission rates for GSM networks can potentially increase from the current rate of 9 6 kbps up to a theoretical maximum of 171 2 kbps An increased data rate is by no means the only benefit provided by GPRS A key advantage is the provision of a permanent virtual connection to the network This always on connection is possible because GPRS uses packet data transfer so that for example email can be downloaded in background mode There is no need for the user to reconnect before requesting a service eliminating connection set up delays and adding convenience and immediacy to data services access The virtual nature of this connection means that network resources are not consumed during periods when a user is not actually sending or receiving data The telephones are made of plastic The display and speaker as well as the 25 key keypad transceiver printed circuit board PCB microphone charger and headphone connectors and power button are contained within clam shell form factor housing The userreplaceable 850 mAh Lithium Ion Li Ion battery provides up to 4 2 8 24 hours of talk time with up to 130 293 hours of standby time The phone accepts 1 8V 3V mini subscriber identity module SI
5. a component is not known use the product model number or other related major assembly along with a description of the related major assembly and of the component in question In the U S A to contact Motorola Inc on your TTY call 800 793 7834 Accessories and Aftermarket Division AAD Replacement parts test equipment and manuals can be ordered from AAD For EMEA spare parts call 49 461 803 1638 For Asia spare parts call 65 648 62995 U S A Outside U S A Phone 800 422 4210 Phone 847 538 8023 FAX 800 622 6210 FAX 847 576 3023 6 Aug 15 2006 Level 1 2 Service Manual Specifications W370 W375 Specifications W370 W375 General Functions Specification External LCD 65K color TFT Active area 28 032 x 35 04mm Pixel Resolution 128 RGB x160 EGSM DCS PCS or GSM850 DCS PCS Frequency Range EGSM DCS Tx 1710 1785MHz Rx 1805 1880MHz GSM850 Tx 824 849MHz Rx 869 894MHz z Frequency Range ea Frequency Range P Frequency Range PCS Tx 1850 1910MHz Rx 1930 1990MHz Channel Spacing 200kHz Channels 174 in EGSM 124 in GSM859 374 in DCS 299 in PCS Modulation GMSK at BT 0 3 Transmitter Phase Accuracy 5 degrees RMS 20 degrees peak Duplex spacing 45MHz EGSM GSM850 95MHz DCS 80MHz PCS Frequency Stability 0 1ppm of downlink frequency RX Operating voltage 3 53V 4 2V Average Transmit Current Power Level 19 115mA Average Standby Current FM Radio Frequency Ran
6. earlier 2 Remove the conduct 3 Need to replacing new conduct P N 306AH80001W after repair process Figure 35 Removing the conduct 4 Pry off the FPC connector Figure 36 Prying off the FPC connector Aug 15 2006 31 Disassembly W370 W375 5 Disengaging the three latches Figure 37 Disengaging the latches 6 Disengaging the three latches Figure 38 Separating the bracket 32 Aug 15 2006 Level 1 2 Service Manual Disassembly 7 Pry off the Sub board Figure 39 Removing the sub board 8 Pry off the VGA FPC connector and remove VGA module Figure 40 Prying off the VGA module Aug 15 2006 33 Disassembly W370 W375 9 Pop out the receiver If you remove a functioning receiver you will irreparably damage it and must therefore replace it Figure 41 Removing the receiver 34 Aug 15 2006 Level 1 2 Service Manual Disassembly Remark l In the event the SIM Card warps after being inserted shown as Figure 42 below Figure 42 2 Solution The angle of insertion must be lower than the surface of the Shielding Can when the factory disassembles the Shielding Can to rework shown in the following figure the surface of Shielding Can This shear plane must be lower than that of Shielding Can Figure 43 Aug 15 2006 35 Disassembly W370 W375 3 1 Cover the shielding case P N 3052H80005W as the figure 44 Figure 4
7. keypad as described earlier 2 Use hand tooling remove four rubber cover Figure 27 Remove four rubber cover 3 Remove four T5 screws Use torque force of 10 78 Nem Figure 28 Removing the four T5 screws Aug 15 2006 27 Disassembly W370 W375 4 With a flat pry bar disconnect the two halves Figure 29 Disconnecting the two halves 5 Disconnect the two halves they are joined by a total of 7 latches ES Ps LT RE Pa a 4a Tit LJ 0 TET Figure 30 Separate the top housing 28 Aug 15 2006 Level 1 2 Service Manual Disassembly 6 Remove the rubber Figure 31 Removing the rubber 7 Use hand tooling remove the HINGE KB Be sure you don t inadvertently damage the FPC Figure 32 Removing the rubber Aug 15 2006 29 Disassembly W370 W375 Removing and Replacing the Top Clamshell l Remove the Top Housing as described earlier 2 Insert a hook into the left hinge space press down and then exert pressure by pressing the clamshell forward Figure 33 Exerting pressure on the clamshell 3 Gently disconnect the top clamshell being careful to not snag or damage the FPC as it slips out of the notch that protects it Figure 34 Disconnecting the top clamshell 30 Aug 15 2006 Level 1 2 Service Manual Disassembly Removing and Replacing the Bracket Sub Board VGA module and Receiver l Remove the top clamshell as described
8. selection Aug 15 2006 11 General Functions W370W375 Liquid Crystal Display LCD The LCD provides a multicolor backlit color display with user adjustable contrast settings for optimum readability in all light conditions The bit map 128 x 160 pixel display includes up to 3 lines of text 1 line of icons and 1 line of prompts Home Screen Display Glock Left Soft Key Label 4 Right Soft Key Label Menu indicator Icon Name Description agl Signal Strength e ar show the strength of the network GPRS Service Available Indication If user is at a GPRS service available area E Data Connection if user choses CSD bear type as data connection bear EB Status If user choses GPRS bear type as data connection bear TS If user activates GPRS service dB Security Link If the browser link is a security web site E If data is transmitting over GPRS connection E KL SA If data is transmitted finishedly over GPRS connection Roam If user roam to another network EE On Call If a phone call is connected 5 S The activate line is line1 E Activate Eme The activate line is line2 EIS Call Forward Line1 is set as call forward kaz Line2 is set as call forward New chat message New Voice Mail received Message Indicator New Voice Mail and Message received New Text MMS WAP Push message received Message Full RingStyle set as LoudRing RingStyle set as SoftRing Ringstyle set as Vibrate REM MnCheator RingSt
9. similar as possible to what appears in the display For example ALERTS or ALERTS Information that you need to type is printed in boldface type Warranty Service Policy The product is sold with the standard 12 month warranty terms and conditions Accidental damage misuse and extended warranties offered by retailers are not supported under warranty Non warranty repairs are available at agreed fixed repair prices Out of Box Failure Policy The standard out of box failure criteria applies Customer phones that fail very early on after the date of sale are to be returned to Manufacturing for root cause analysis to guard against epidemic criteria Manufacturing to bear the costs of early life failure Product Support The customer s original phones will be repaired but not refurbished as standard Appointed Motorola Service Hubs will perform warranty and non warranty field service for level 2 assemblies and level 3 limited Transceiver component Motorola High Tech Centers will perform level 4 full component repairs Customer Support Customer support is available through dedicated Call Centers and in country help desks Product Service training should be arranged through the local Motorola Support Center Aug 15 2006 5 Introduction W370 W375 Parts Replacement When ordering replacement parts or equipment include the Motorola part number and description used in the service manual When the Motorola part number of
10. 4 3 2 Stick the black mylar P N 3064H80001W on the surface of shielding case as the figure 45 Figure 45 36 Aug 15 2006 Level 1 2 Service Manual Subscriber Identity Module SIM and Identification Label Subscriber Identity Module SIM and Identification Label SIM A SIM is required to access the existing local GSM network or remote networks when traveling if a roaming agreement has been made with the provider The SIM contains e All the data necessary to access GSM services e The ability to store user information such as phone numbers e All information required by the network provider to provide access to the network Identification Each Motorola GSM phone is labeled with a variety of identifying numbers The following information describes the current identifying labels Mechanical Serial Number MSN e The MSN is an individual unit identity number and remains with the unit throughout its life e The MSN can be used to log and track a phone on Motorola s Service Center Database e The MSN is divided into 4 sections as shown in Figure 46 4 MSN 10 Digits p 3 Digits 1 Digit 2 Digits 4 Digits Account Product Code Distribution Center Date Code Year and Unit s individual serial i e StarTAC Phone130 i e Easter Inch Month of Shipment number Figure 46 MSN Divisions International Mobile Station Equipment Identity IMEI The International Mobile Station Equipment Identity IMEI
11. CKNIKLIXEF f 351 Aug 15 2006 43 Part Number Charts W370 W375 Table 4 W370 Exploded View Parts List Number Part Number paka 320 2517H80001W 322 303LH80001W 323 305AH80001W 325 302AH80003W 327 2516H80001W 328 3407119001W 329 2541H80001W 332 302BH80007W 350 3501745101W 351 3501733103W 352 254CH80001W DISLOWASY BTB SPON BRACKET RUBBER DISUPPASY HINGE LCD LENS RUBBERPAD SCREW SCREW SCREW COV H80 SILVER H80 PORON 7 5 11 0 3 DIS H80 SUS304 39 62 9 0 3 H80 RUBBER TRANSPARENT LED H80 BLACK H96 FE AU F7 11 95 5 PREXCO H80 MR58 TRANSPARENT H80 SILICON 6 7 WHITE HINGE TORX M1 7 4 5 BLACK NI KL IXEF TORX M1 7 3 3 BLACK NI KL H80 RUBBER BLACK 01 zzzowootw MIC ACM601 02P22413 9611AAC 002 003 004 006 051 251 252 253 500 301 502 303 304 505 306 307 308 309 Fr 512 gra 2517R80001W DISLOWASY H SIVER lt lt 308LHB0001W_ BTB SPON LE 305AH800010_ BRACKET H80 8U5304 30 2908 3021800030 RUBBER H GRUBBER TRANSPARENT LED 25T6RB0001W DISUPPASY rosak ooo 3407119001W_ HINGE HB6FE AU FT 1195 5PREXGO 2541R80001W_ LOD LENS HB0 MRGB TRANSPARENT 3028A80007W RUBBERPAD FBO LICONST WHTERNGE 3501745101W SCREW TORXM1 74 5 BLACKNIKLJXEF 3501783108W_ SCREW TORXMI T3 3 BLACKNIKL 2546H80601W_ SGREWGOV______ HBGRUBB R BLACK Aug 15 2006 Level 1 2 Service Manual Part Number Charts only with the same type of b
12. Liquid Crystal Display LCD 12 Low Battery 14 Mechanical Serial Number 37 Menu Key 11 Menu Navigation 11 Microphone 11 N Navigation Key 11 O Other Features 10 Out of Box Failure Policy 5 D Part Number Charts 41 Parts Replacement 6 Accessories and Aftermarket Division 6 Power Connector Port 11 Power End Key 11 Product Overview 9 Caller Line Identification 10 Features 9 Other Features 10 SIM Toolkit Class 2 10 Simplified Text Entry 10 Product Support 5 R Right Soft Key 11 S Scope 4 Send Answer Key 11 SIM Card 37 Identification Label 37 International Mobile Station Equipment Identity IMEI 37 Mechanical Serial Number 37 SIM Toolkit Class 2 10 Simplified Text Entry 10 Specifications 7 Aug 15 2006 Index Index 2 Level 1 2 Service Manual T Tools and Test Equipment 14 Troubleshooting 39 U USB Connector Port 11 User Interface 11 User Interface Menu Structure 13 VV VVarranty Service Policy 5 Customer Support 5 Out of Box Failure Policy 5 Product Support 5 Aug 15 2006 Index Index 3 Level 1 2 Service Manual Index Aug 15 2006 Index 4 MOTOROLA the Stylized M Logo and all other trademarks indicated as such herein are trademarks of Motorola Inc All other product or service names are the property of their respective owners Reg U S Pat Tm Off 2005 Motorola Inc All rights reserved Personal Communications Sector Sawgrass International Concou
13. M cards that fit into the SIM holder next to the battery These telephones feature a 128 x 160 pixel color graphics display and an internal antenna Features W370 W375 telephones use advanced self contained sealed custom integrated circuits to perform the complex functions required for GSM GPRS communication Aside from the space and weight advantage microcircuits enhance basic reliability simplify maintenance and provide a wide variety of operational functions Features available in this family of telephones include e A 128 x 160 pixel color graphics display e Internal antenna e Caller line identification CLI Network subscription and SIM card or service provider dependent feature Not available in all areas e Lower voltage technology that provides increased standby and talk times e Extended GSM EGSM channels e Tri coder decoder CODEC that allows full rate half rate and enhanced full rate modes of transmission e Display animation VibraCall vibrating alert e 5 Way navigation key e Simplified text entry using iTAP predictive text entry e SIM Toolkit Class 2 STK Network subscription and SIM card or service provider dependent feature Not available in all areas Aug 15 2006 9 Product Overview W370 W375 e Backlight e Speed Quick and One Touch dialing e Call Forwarding and Holding e Customized Menus e Personal management tools calculator with currency converter real time clock wi
14. Q Level 1 2 Service Manual MOTOROLA W370 W375 Tri Band Wireless Telephone W370 W375 GSM 9001 1800 1900 GSM8501 1800 1900 Table of Contents W370 W375 Table of Contents IIrOAUCHON usu OGR OEG EEE e AEO 3 PROGUCLIJENUIEGNON aoc SER GO Alo dT AA OO OR EEE EE 3 ROG ic NAME e 3 Sele d eL 3 Regulatory Agency Compliance sneri aaa aaa aaa aa aaa aaa a nike aaa e ten ere zaa a zaaa aaa aaa eee eee nenes 3 Computer Program Copyrights nana aaa nenen eke nike need eee eee e eee eee ee eee nep e sere nete eee eee ee pene kene 4 ADOUF THIS Sevice Manual oe sete pain GG A O td 4 Walra n gt SeMICEPOAICY pe petrustenc acar e ho BEZ dE Gd 5 E ANS REDIaCEMIE L wa i OO OWE A AO GAGA GOO 6 SPECITICATIONS VWVS7 OVS 70 asza hite ohh CEE a de ni is zd 7 PFOGUGCE OVEN VICW ara nn oh he 9 FOAIUT S den 9 General HUG COINS ann des 11 Controls Indicators and Input Output I O Connectors 0 0 0 eee ana ee eee 11 Us rinterrac MenuSWUCIUrE sarrerea adi e O Pzero ydy dk 13 BalerY Talee 14 ETIT APO AREAS OGR AEON A OO A 14 Tools ana Test EQUIPME NI esen 14 DISASSOMDN g ri s ran du ah ua klad d ud 15 Removing and Replacing the Battery esaa aaa ae re aaa aaa aa eres eres rete rete rete res eee e rene res enesi 16 Removing and Replacing the SIM Card esuae aaa e aaa aaa aa anawa aa epe nene ee pene e ene ke eee eee kete 17 Removing and Replacing the Bottom HOUSING sss esse eee eee aaa aaa aaa
15. a aaa nare e eee eee ever eren eres 17 Removing and Replacing the Spk gasket Vibrator rubber pad and Speaker 20 Removing and Replacing the Main Board and Keypad sese nana eee 22 Removing and Replacing the Top HOUSING aaa aaa aaa eee ee ee eee e eka ee nare nie ne eee eee eee eee e eee ke eee eee 21 Removing and Replacing the Top Clamshell sese 30 Removing and Replacing the Bracket Sub Board VGA module and Receiver 31 ROMAN aan ORA cee AREA OE AA A 35 Subscriber Identity Module SIM and Identification Label esaae saa o aaa o eren arenen 37 SIN eee eee eee een ee ee eer ee EA 3 GEDUICALUOM na 37 IFOUBIESROOUNO suck c d w a ok Odd 39 W370 W375 Troubleshooting Chart esuae aaa e aaa aaa aa aaa aaa a eee eee pes eres eee e eee teren ee rene enes 39 Programming Software Upgrade and Flexing esse sese eee aaa eee ee 40 Part Number CANS uuu e ACO AEO AGE E 41 Explodeaview Pans LIS err i 43 ACCOSSONES asa ARA O RO R An A AAAA 45 NAC E ZAC EEE R A 1 2 Aug 15 2006 Level 1 2 Service Manual Introduction Introduction Motorola Inc maintains a worldwide organization that is dedicated to provide responsive full service customer support Motorola products are serviced by an international network of company operated product care centers as well as authorized independent service firms Available on a contract basis Motorola Inc offers comprehensive maintenanc
16. attery or equivalent as recommended by the battery manufacturer There is a danger of explosion if the Lithium ion battery pack is replaced incorrectly Replace Dispose of used batteries according to the manufacturer s instructions To order parts please use the following Link https servicelink3 motorola com Password is required For information on ordering parts please contact EMEA at 49 461 803 1638 Accessories Table 5 List of Accessories Power solutions BQ50 battery 850 mAh EMU Switch Mode Dual Rate US In Vehicle VC700 EMU Power Adapter SYN0847A Audioa Connectivity Mono Earbud Headset Black Mono Earbud Headset Silver Consumer amp Personalization Silver Lanyard Asia except PRC AAYN4402A Silver Lanyard CHYN4546 Aug 15 2006 45 Part Number Charts W370 W375 46 Aug 15 2006 Level 1 2 Service Manual Index A About Audience 4 Conventions 5 Scope 4 Accessories and Aftermarket Division 6 Audience 4 B Battery Function 14 Operation 14 Battery Gauge 14 C Caller Line ldentification 10 Controls 11 Conventions 5 Customer Support 5 D Disassembly 15 E Electrostatic Discharge 15 G General Functions 11 H Headset Connector Port 11 Indicators 11 Input Output I O Connectors 11 International Mobile Station Equipment Identity IMEI 37 Number Breakdown 37 Aug 15 2006 Index Index 1 Level 1 2 Service Manual L Left Soft Key 11
17. e and installation programs that enable customers to meet requirements for reliable continuous communications To learn more about the wide range of Motorola service programs contact your local Motorola products representative or the nearest Customer Service Manager Product Identification The model number on a label usually on the housing identifies Motorola products Use the entire model number when inquiring about the product Numbers are also assigned to chassis and kits Use these numbers when requesting information or ordering replacement parts Product Names Product names are listed on the front cover Product names are subject to change without notice Some product names as well as some frequency bands are available only in certain markets Product Changes When electrical mechanical or production changes are incorporated into Motorola products a revision letter is assigned to the chassis or kit affected for example A B or C and so on The chassis or kit number complete with revision number is imprinted during production The revision letter is an integral part of the chassis or kit number and is also listed on schematic diagrams and printed circuit board layouts Regulatory Agency Compliance This device complies with Part 15 of the FCC Rules Operation is subject to the following conditions e This device may not cause any harmful interference and this device must accept interference received including int
18. erference that may cause undesired operation e This class B device also complies with all requirements of the Canadian Interference Causing Equipment Regulations ICES 003 Cet appareil num rique de la classe B respecte toutes les exigences du Reglement sur le mat riel brouilleur du Canada Aug 15 2006 3 Introduction W370W375 Computer Program Copyrights The Motorola products described in this manual may include Motorola computer programs stored in semiconductor memories or other media that are copyrighted with all rights reserved worldwide to Motorola Laws in the United States and other countries preserve for Motorola Inc certain exclusive rights to the copyrighted Introduction computer programs including the exclusive right to copy reproduce modify decompile disassemble and reverse engineer the Motorola computer programs in any manner or form without Motorola s prior written consent Furthermore the purchase of Motorola products shall not be deemed to grant either directly or by implication estoppel or otherwise any license or rights under the copyrights patents or patent applications of Motorola except for a nonexclusive license to use the Motorola product and the Motorola computer programs with the Motorola product About This Service Manual Using this service manual and the suggestions contained in it assures proper installation operation and maintenance of W370 W375 telephones Refer questions about this manual
19. ge Operating Temperature Storage Temperature 40 C to 85 C Talking time 4 2 8 24 hours Standby Battery Life time 130 293 hours Battery Charge Time 240 Mins to 90 850mAH Capacity Alert Volume Max 95dB 5 cm 0 5 watts input Aug 15 2006 7 Specifications W370 W375 W370 W375 Transmitter Functions Specification RF Power Output EGSMIGSM850 32 5dBm TYP DCS PCS 30dBm TYP Output Impedance 50 ohm TYP Spurious Emissions 36 dBm from 0 1 to 1GHZz 30 dBm from 1 to 4GHz Receiver Sensitivity EGSM GSM850 107dBm DCS PCS 106dBm Channel Hop Time 500 microseconds Time to Camp Approximately 6710 Second Speech Coding Functions Specification Speech Coding Type Regular pulse excitation linear predictive coding with long term prediction PRE LPC with LTP Class 2 bits 78 bits Bit Rate with FEC Encoding 22 8 Kbps 8 Aug 15 2006 Level 1 2 Service Manual Product Overview Product Overview The Motorola W370 W375 features a global system for mobile communications wireless interface and general packet radio service GPRS transport technology It also features a simplified icon and graphical user interface UI for easier operation in addition to short message service text messaging SMS speed dialing quick dialing an alarm a calculator games and an address book The W370 W375 is a tri band phone that allows for roaming within the EGSM900 DCS1800 PSC1900 or GSM850 1 DCS1800 PCS1900
20. le to damage from electrostatic discharge ESD Ensure adequate static protection is in place when handling shipping and servicing any internal components componeniS i Avoid stressing the plastic in any way to avoid damage to either the plastic or internal Aug 15 2006 15 Disassembly W370 W375 Removing and Replacing the Battery A All batteries can cause property damage and or bodily injury such as burns if a conductive material such as jewelry keys or beaded chains touches exposed terminals The conductive material may complete an electrical circuit short circuit and become quite hot Exercise carein handling any charged battery particularly when placing it inside a pocket purse or other container with metal objects 1 Ensure the phone is turned off 2 Press the battery cover release button and then slide it away Figure 5 Opening the battery cover 3 Next push the battery inward and as it disengages pull it up and away from the battery compartment Figure 6 Removing the battery 16 Aug 15 2006 Level 1 2 Service Manual Disassembly There is a danger of explosion if the Lithium ion battery is replaced incorrectly Replace only with the same type of battery or equivalent as recommended by the battery manufacturer Dispose of used batteries according to the manufacturer s instructions Removing and Replacing the SIM Card l Remove the battery as described earlier 2 Rem
21. lephone Menu Structure Aug 15 2006 13 Tools and Test Equipment W370 W375 Battery Function A A gt Operation The telephone displays a battery charge indicator icon in the idle screen to indicate the battery charge level The gauge shows four levels 100 66 33 and Low Battery Removing the battery causes the phone to shut down immediately and loose any pending work partially entered phone book entries or outgoing messages for example Note All batteries can cause property damage and or bodily injury such as burns if a conductive material such as jewelry keys or beaded chains touches exposed terminals The conductive material may complete an electrical circuit short circuit and become quite hot Exercise care in handling any charged battery particularly when placing it inside a pocket purse or other container with metal objects If the battery is removed while receiving a message the message is lost To ensure proper memory retention turn the phone OFF before removing the battery Immediately replace the old battery with a fresh battery For detailed operating instructions refer to the appropriate User Guide listed in the Related Publications section toward the end of this manual Tools and Test Equipment The table below lists the tools and test equipment used on W370 W375 telephones Use either the listed items or the equivalent Table 1 General Test Equipment and Tools 0180386A82 Antis
22. ng the appropriate battery charger If the battery will not recharge replace the battery If battery is not at fault proceed to b b Battery terminals open or Visually inspect the battery terminals on both the misaligned battery and the phone Realign and if necessary either replace battery or refer to a Level 3 Service Center for the battery connector replacement If battery terminals are not at fault proceed to c c Keypad defective Replace the keypad Temporarily connect a 3 6 Vdc supply to the battery terminals Press and hold the PWR button If phone turns on and stays on disconnect the dc power source and reassemble with the new keypad 2 Phone exhibits poor reception or Connections to or from lower Check connection between the antenna and the erratic operation such as calls PCB defective lower PCB frequently dropping or weak or distorted audio 3 Display is erratic or provides LCM defective Replace the LCM Verify that the fault has been partial or no display cleared and reassemble the phone with the new LCM 4 Incoming call alert transducer Speaker defective Replace the speaker as described in the audio distorted or volume is too low procedures Verify that the fault has been cleared and reassemble the phone with the new speaker 5 Phone transmit audio is weak Microphone defective Replace the microphone as described in the usually indicated by called parties procedures Verify that the fault has been clea
23. number is an individual number unique to the Transceiver and is stored within the unit s memory The IMEI uniquely identifies an individual mobile station and thereby provides a means for controlling access to GSM networks based on mobile station types or individual units The full IMEI structure is listed in the table below Aug 15 2006 37 Subscriber Identity Module SIM and Identification Label W370 W375 Table 2 IMEI Number Breakdown TAC Serial Number Check Digit NNXXXXXX ZZZZZZ A Where TAC Type Allocation Code formerly known as Type Approval Code NN Reporting Body Identifier BABT or CTIA XXXXXX Type Identifier defined by BABT or CTIA ZZZZZZ Individual unit serial number Phase 1 0 A Phase 2 amp 2 check digit and is defined as a function of all other IMEI digits Other label number configurations present are e TRANSCEIVER NUMBER Identifies the product type Normally the SWF number i e V100 e PACKAGE NUMBER Identifies the equipment type mode and language in which the product is shipped 38 Aug 15 2006 Level 1 2 Service Manual Troubleshooting Troubleshooting W370 W375 Troubleshooting Chart Level 1 and 2 Troubleshooting Chart Symptom Probable Cause Verification and Remedy 1 Phone will not turn on or stay on a Battery either discharged or Measure battery voltage across a 50 ohm gt 1 Watt defective load If the battery voltage is lt 3 25 Vdc recharge the battery usi
24. ove the SIM from its holder by sliding it in the direction shown below ALI Figure 7 Removing the SIM Card 3 To replace carefully slide the SIM into position in its socket 4 The latch secures the SIM when correctly positioned over the terminals in the phone Replace the battery Removing and Replacing the Bottom Housing l Remove the SIM as described earlier 2 Remove the cap Figure 8 Removing the cap Aug 15 2006 17 Disassembly W370 W375 3 Remove the two T5 screws Use torque force of 10 78 Necm Figure 9 Removing the screws 4 Remove the four T5 screws Use torque force of 10 78 Nem Figure 10 Removing the screws 18 Aug 15 2006 Level 1 2 Service Manual Disassembly 5 Push housing to separate the latch Figure 11 Disengaging the latches 6 Use one hand to grip the case firmly and pry it apart a fraction then disengage 2 latches connecting it to the front housing Figure 12 Disengaging the latches Aug 15 2006 19 Disassembly W370 W375 7 Pry the back housing away from the front Figure 13 Separating the back housing Removing and Replacing the Spk gasket Vibrator rubber pad and Speaker l Remove the bottom housing as described earlier 2 Remove the spk gasket Figure 14 Removing the Spk gasket 20 Aug 15 2006 Level 1 2 Service Manual Disassembly 3 Remove the vibrator Figure 15 Removing the
25. red complaining of difficulty in hearing and reassemble the phone with the new voice microphone 6 Receive audio from earpiece a Connections to or from lower Check connection between the antenna and the speaker is weak or distorted PCB defective lower PCB If the connection is OK proceed to b b Earpiece Speaker defective Temporarily replace the earpiece speaker with a known good earpiece speaker Ensure good connection Place a call and verify improvement in earpiece audio If fault is cleared reassemble the phone with the good earpiece speaker Aug 15 2006 39 Troubleshooting W370 W375 Level 1 and 2 Troubleshooting Chart Continue Symptom Probable Cause Verification and Remedy 7 Phone will not recognize or accept SIM SIM card defective Check the SIM card contacts for dirt Clean if card necessary and check if fault has been cleared If the contacts are clean insert a known good SIM card into the phone Power up the phone and confirm that the card has been accepted If the fault no longer exists replace the defective SIM card 8 Keypad not functioning Keypad defective Use alcohol to wipe the keypad metal dome Check if fault has been cleared If the fault is still present either replace the keypad or refer to a Level 3 Service Center for the keypad metal dome replacement 9 Vibrator feature not functioning a Vibrator faulty Check general condition of vibrator If it is good proceed to b
26. rse 789 International Parkway Room S2C Sunrise FL 33323
27. tatic Mat Kit includes 66 80387A95 Provides protection from damage to antistatic mat 66 80334B36 ground phone caused by electrostatic discharge cord and 42 80385A59 wrist band ESD Antistatic Gloves Provides protection from damage to phone caused by electrostatic discharge ESD 8102430204 GSM DCS PCS Test SIM Used to enable manual test mode 6680388B67 Disassembly tool plastic with flat and Used during assembly disassembly pointed ends manual opening tool 6680388B01 Tweezers plastic Used during assembly disassembly camera jig Used to remove a built in camera where present Aug 15 2006 Level 1 2 Service Manual Disassembly Table 1 General Test Equipment and Tools HP34401A2 Digital Multimeter Used to measure battery voltage 1 To order in North America contact Motorola Aftermarket and Accessories Division AAD by phone at 800 422 4210 or FAX 800 622 6210 Internationally AAD can be reached by calling 847 538 8023 or by fax 847 576 3023 2 Not available from Motorola To order contact Hewlett Packard at 800 452 4844 Figure 4 A screwdriver T5 a pair of tweezers and a camera jig P gt Note This particular camera requires a unique camera jig pictured on the far right for disas sembly of the camera where present You can order this tool from Motorola using the informa tion presented above in Footnote 1 Disassembly Many of the integrated devices used in this phone are vulnerab
28. th date reminders and caller profiling e Other features Caller Line Identification Upon receipt of a call the calling party s phone number is compared to the phone book If the number matches a phone book entry that name will be displayed If there is no phone book entry the incoming phone number will be displayed In the event that no caller identification information is available an incoming call message is displayed Simplified Text Entry The W370 W375 features ITAPTM predictive text entry Press a key to generate a character and a dynamic dictionary uses this to build and display a set of word or name options The 1TAP feature may not be available on the phone in all languages SIM Toolkit Class 2 SIM Application Toolkit is a value added service delivery mechanism that allows GSM operators to customize the services they offer their customers from the occasional user who requests sports news and traffic alerts to a high call time business user who receives stock alerts and checks flight times Operators can now create their own value added services menu quickly and easily in the phone The customized menu will appear as the first menu and may be updated over the air with new services when customers request them Other Features Detailed descriptions of the other features can be found in the appropriate W370 W375 telephone user guides listed in the Related Publications section at the end of this manual 10 Aug 15
29. to the nearest Customer Service Manager This manual contains mechanical service information required for the equipment described and is current as of the printing date Audience This document aids service personnel in testing and repairing W370 W375 telephones Service personnel should be familiar with electronic assembly testing and troubleshooting methods and with the operation and use of associated test equipment Scope This manual provides basic information relating to W370 W375 telephones and also provides procedures and processes for repairing the units at Level 1 and 2 service centers including e Unit swap out e Repairing of mechanical faults e Basic modular troubleshooting e Testing and verification of unit functionality Initiate warranty claims and send faulty modules to Level 3 or 4 repair centers 4 Aug 15 2006 Level 1 2 Service Manual Introduction Conventions Special characters and typefaces listed and described below are used in this publication to emphasize certain types of information Note Emphasizes additional information pertinent to the subject matter Caution Emphasizes information about actions that may result in equipment damage Warning Emphasizes information about actions that may result in personal injury gt gt Keys to be pressed are represented graphically For example instead of Press the Menu Key you will see Press Information from a screen is shown in text as
30. vibrator 4 Remove the two rubber pad Figure 16 Removing the rubber pad Aug 15 2006 21 Disassembly W370 W375 5 Insert a thin screwdriver or tweezers beneath the speaker chip then gently pry it out Figure 17 Removing the speaker chip Removing and Replacing the Main Board and Keypad l Remove the bottom housing as described earlier Use hand tooling pry out the conduct 3 Need to replacing new conduct P N 306AH80001W after repair process Figure 18 Removing the conduct 22 Aug 15 2006 Level 1 2 Service Manual Disassembly 4 Remove the side rubber Figure 19 Removing the side rubber 5 Pry off the FPC connector Figure 20 Prying off the FPC connector Aug 15 2006 23 Disassembly W370 W375 6 Remove the main board Figure 21 Remove the main board 7 Push two clip to pry off the antenna Figure 22 Prying the antenna 24 Aug 15 2006 Level 1 2 Service Manual Disassembly 8 Pry off the microphone Figure 23 Prying the microphone 9 Pry off the spring carefully when Removing and replacing spring Figure 24 Prying the spring Aug 15 2006 25 Disassembly W370 W375 10 Remove the keypad Figure 25 Removing the keypad 11 Remove the lanyard Figure 26 Removing the lanyard 26 Aug 15 2006 Level 1 2 Service Manual Disassembly Removing and Replacing the Top Housing l Remove the main board and
31. yle set as Vibrate And Ring RingStyle set as Vibrate ThenRing RingStyle set as Silent mm N Ae e Vertical bar shows the battery level Headset Indicator Shows the phone is connecting with headset Figure 2 LCD Icons 12 Aug 15 2006 Level 1 2 Service Manual General Functions User Interface Menu Structure The table below shows a portion of the W370 W375 telephone menu structure Menu Map Phonebook x Recent Calls Start Browser Received calls e Web Shortcut Dialed Calls e Go to URL NotePad e Web Session Call Times e Stored Pages Call Cost e History Date Times e General Setting Date Volumes Multimedia Messages e Camera Create e Pictures Inbox e Sounds Draft e FM Radio Outbox E Personalize Quick Notes e Home Screen Voicemail e Main Menu Browser Msgs e Color Setting Info Services e Greeting MMS Templates e Wallpaper Office Tools e Screen Saver Calculator e Quick Dial MyMenu bf Settings Alarm Clock e Ring Style Stop Watch e Call Forward Web Access Chat e In Call Setup Dialing Services STK Service Calendar Lantern Games amp Apps e Football Initial Setup Phone Status Headset Network Security Easy Prefix e Space Lantern e Crazy e Sound Settings Note The STK Service depends on your carriers SIM card You may not see this function Chat Quick Dial and Easy Prefix depend on your carrier s set tings You may not see these features in your phone Figure 3 Te
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