Huawei U8650-NFC Maintenance Manual
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Huawei U8650-NFC Maintenance Manual

Maintenance manual basic version
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U8650-NFC Maintenance Manual Basic Version
Prepared by
Reviewed by
Approved by
V1.0
Product Department
Documentation Team
Huawei Technologies Co., Ltd.
All rights reserved
Date
2011-06-9
Date
Date

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Summary of Contents for Huawei U8650-NFC

  • Page 1 U8650-NFC Maintenance Manual Basic Version V1.0 Product Department Prepared by Date 2011-06-9 Documentation Team Reviewed by Date Approved by Date Huawei Technologies Co., Ltd. All rights reserved...
  • Page 2 U8650-NFC Maintenance Manual Basic Version V1.0 Internal Revision record Revision Section Change Date Revision Cause Author Version Number Description Product Department 2011-6-9 V1.0 Documentation Team 2011-06-09 Huawei confidential. No spreading without permission. Page 2 of 62...

  • Page 3: Table Of Contents

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal Contents 1 PRODUCT INTRODUCTION ..........................5 1.1 P ............................. 5 RODUCT PPEARANCE 1.2 P ..........................5 RODUCT PECIFICATIONS 2 MAINTENANCE INFORMATION GUIDE ......................7 2.1 D ........................... 7 OCUMENT PPLICATION 2.2 M ........................... 7...
  • Page 4 U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.16.5 RF Transmitting Failure-WCDMA 900MHz ..................... 55 9.16.6 RF Transmitting Failure-GSM 1800&1900MHz ..................56 9.16.7 RF Transmitting Failure-GSM 900MHz ..................... 57 10 WELD POINTS INDICATOR CHART FOR PCB AND BGA CHIP ............58 11 FUNCTIONAL TEST ............................

  • Page 5: Product Introduction

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal Product Introduction 1.1 Product Appearance 1.2 Product Specifications Items Content Description Shape Bar-type Dimensions 116.3mm(L) × 60.5mm(W) × 11.9mm(T) Weight About 120g (including the battery) WCDMA/HSDPA: 3GPP FDD Release 99, Release 5 (International...
  • Page 6 U8650-NFC Maintenance Manual Basic Version V1.0 Internal Items Content Description External interface Standard Micro USB, MicroSD Card slot, 3.5mm headset SIM card interface standard 6-pin SIM card interface USB2.0 High Speed 1400 mAh Li-Battery; Battery Standby time: Up to 400 hours (3G) Talking time: Up to 400 min (3G) 3.5-inch TFT-LCD flat capacitive touch-sensitive screen with 320×480...

  • Page 7: Maintenance Information Guide

    Maintenance Information Guide 2.1 Document Application This document provides instructions for maintenance of Huawei products. This manual is Huawei proprietary and is only permitted to be used by authorized service partners. Shall there be any mistakes found in this document, kindly contact our customer service personnel.

  • Page 8: Explosive View Of Product

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal Explosive View of Product 14 15 This exploded view is only applied to show phone frame. It is not regarded as a reference for applying spare parts. Description Quantity Touch Screen Front Cover Asm...
  • Page 9 U8650-NFC Maintenance Manual Basic Version V1.0 Internal Description Quantity Volume_Key Bottom Cover Asm PRODUCT_LABEL Li-ion Battery Battery_Cover_Asm MIC_COVER Voice Key Adagio Speaker Main Antenna 2011-06-09 Huawei confidential. No spreading without permission. Page 9 of 62...

  • Page 10: Location Of Components On The Main Board

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal Location of Components on the Main Board Z4304 SAW filter J1101 earphone connector U1303 Voltage Regulator J1301 BTB Connector Failure symptom: Failure symptom: Failure symptom: Failure symptom: Weak signal- Earphone failure LCD backlight failure Display failure WCDMA2100&1900MHz...
  • Page 11 U8650-NFC Maintenance Manual Basic Version V1.0 Internal D1202 Infrared Emitting U1202 light&Proximity Diode sensor Failure symptom: Failure symptom: Light&Proximity sensor failure Light&Proximity sensor failure U3202 RF Switch Failure symptom: RF failure U3304 Duplexer Failure symptom: RF failure- WCDMA2100MHz U3501 Power Module...
  • Page 12 U8650-NFC Maintenance Manual Basic Version V1.0 Internal Description Location 15010251 Schottky Diode D1401,D1503 15020099 Lighting Diode-0.045cd-White D1402,D1403 15040208 Transient Suppressing Diodes D1404 19040121 Fast Blowout Fuse F901 14240247 IO Connector J901 14240170 Connector,Camera Socket J1001 14240229 Headphone Connector J1101 14240178...
  • Page 13 U8650-NFC Maintenance Manual Basic Version V1.0 Internal Description Location 38140017 semiconducting sensor, light&Proximity sensor U1202 38140024 Semiconductor Sensor, E-Compass U1203 38140023 Semiconductor Sensor, Accelerometer U1204 39110581 Voltage Regulator U1303 32050026 Vibrator U1401 Temperature Compensated Crystal 12070013 U3101 Oscillator-19.2MHz 14240004 RF Connector-Straight-Female...
  • Page 14 U8650-NFC Maintenance Manual Basic Version V1.0 Internal Description Location 22020058 Speaker-8ohm 23060043 Camera Module 22030037 Receiver,30ohm 23070079 Touch Screen 2011-06-09 Huawei confidential. No spreading without permission. Page 14 of 62...

  • Page 15: Software Upgrade

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal Software Upgrade 5.1 Preparation for Upgrade Item Contents Remark Battery The battery level shall be no less than two bars. Micro SD card 512M at least. Upgrade Environment For copy upgrade file. The version is only for your information. Please Main package download the latest version.
  • Page 16 U8650-NFC Maintenance Manual Basic Version V1.0 Internal 2011-06-09 Huawei confidential. No spreading without permission. Page 16 of 62...

  • Page 17: Force Download

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 4. Begin upgrade the main package, the handset will restart automatically. 5. Upgrade the vendor package, the upgrade procedure is the same as upgrade main package. 5.3 Force Download 1. Format micro SD card or delete its content.

  • Page 18: Check The Firmware Version

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 5.4 Check the Firmware Version To check the version Settings -> About device -> Build number 5.5 Error Handling Error 1 During SD card upgrade, the key pad led flash very frequently (two flashes per second), and the progress bar stop, that means an error occurs.

  • Page 19: Maintenance Tools

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal Maintenance Tools Name: Constant-temperature Hot Air Gun Purpose: Heat component. Name: Soldering Iron Purpose : Repair soldering Name: DC Power Supply Purpose: Supply voltage and current. Name: Soldering Station Purpose: Fix main board.
  • Page 20 U8650-NFC Maintenance Manual Basic Version V1.0 Internal Name: Tool kit Purpose : Assemble and Disassemble tool Name: Electronic Screw Driver Purpose : Assemble and Disassemble tool 2011-06-09 Huawei confidential. No spreading without permission. Page 20 of 62...

  • Page 21: Disassembly Procedure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal Disassembly Procedure 1. Make sure the ESD antistatic wrist strap 2. Disassemble procedure is shown below. connect to the ground is normal. 3. Remove the Battery cover. 4. Remove the Battery. 5. Remove the six screws.
  • Page 22 U8650-NFC Maintenance Manual Basic Version V1.0 Internal 7. Remove the volume key. 8. Remove the volume key FPC. 9. Remove the power key FPC. 10. Loosen the TP lens connector. 11. Loosen the LCD module connector. 12. Loosen the buckles between the mainboard around.
  • Page 23 U8650-NFC Maintenance Manual Basic Version V1.0 Internal 13. Remove the main board. 14. Remove the LCD module. 15. Protect the LCD with film. 16. Protect the LCD lens with film. 17. Loosen the receiver. 18. Remove the MIC_COVER. 2011-06-09 Huawei confidential. No spreading without permission.
  • Page 24 U8650-NFC Maintenance Manual Basic Version V1.0 Internal 20. Use soldering iron to remove the power key 19. Remove the camera.（Use the professional FPC and volume key FPC. disassembly tool） 21. Disassembly procedure is completed. 22. Disassembly procedure is completed. 2011-06-09 Huawei confidential.

  • Page 25: Assembly Procedure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal Assembly Procedure 1. Make sure the ESD antistatic wrist strap 2. Assemble procedure is shown below. connect to the ground is normal. 4. Assemble the camera. （Use the professional 3. Use soldering iron to assemble the power key FPC and volume key FPC.
  • Page 26 U8650-NFC Maintenance Manual Basic Version V1.0 Internal 7. Rip off the protective film from LCD. 8. Assemble the LCD. 9. Assemble the mainboard. 10. Press and fix the main board. 11. Assemble the power key FPC and volume key 12. Fix the LCD BTB connector.
  • Page 27 U8650-NFC Maintenance Manual Basic Version V1.0 Internal 13. Fix the TP BTB connector. 14. Assemble the volume key. 15. Assemble the speaker. 16. Assemble the back cover. 17. Assemble the six screws. 18. Assemble the battery. 2011-06-09 Huawei confidential. No spreading without permission.
  • Page 28 U8650-NFC Maintenance Manual Basic Version V1.0 Internal 20. Assembly procedure is completed. 19. Assemble the battery cover. 2011-06-09 Huawei confidential. No spreading without permission. Page 28 of 62...

  • Page 29: Trouble Shootings Of Common Faults

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal Trouble shootings of Common Faults Before performing the following troubleshooting operations, ensure the software of the terminal is in good condition and restored to default settings. 9.1 Principle Instruction 2011-06-09 Huawei confidential. No spreading without permission.

  • Page 30: N Opower On

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.2 No Power On 9.2.1 High Current (DC power supply) Analyzing： High current is caused by the short of power supply circuit, when use the DC power supply, the current is about 500mA or more. This fault consist of major reasons, the VBAT and VPH_PWR is short with ground.
  • Page 31 U8650-NFC Maintenance Manual Basic Version V1.0 Internal VPH_PWR U201 4.2V Test C218 U201 VBAT J1201 3.7-4.2V Test Pin1 J1201 U401 VPH_PWR Q202 4.2V Test Pin2 VBAT Q202 3.7-4.2V Test Pin3 VCHG J901 Test Pin1 J901 VBAT U3501 3.7-4.2V Test C3522...

  • Page 32: Low Current (Dc Power Supply)

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.2.2 Low Current (DC power supply) Reference Figure 9-2 Low current Download the latest software version, check if it is normal? Measure whether Replace the the output voltage of the U201 U201 is normal?
  • Page 33 U8650-NFC Maintenance Manual Basic Version V1.0 Internal U401 U601 VREG_TCXO U201 2.85V Test C227 32.768KHz X201 Test Pin1 VREG_MSME U201 1.8V Test C208 VREG_MSMP X201 U201 2.6V Test C221 VREG_MSMC1 U201 1.4V U201 Test C219 VREG_MSMC2 U201 1.4V Test C210...

  • Page 34: Charge Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.3 Charge Failure Reference Figure 9-3 Charge failure Measure whether the voltage Replace the of J901 Pin1 is about 5V? J901 Measure whether Replace faulty the F901&LB901 are components normal? Measure whether Replace the...

  • Page 35: Sim Card Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal U401 J1401 D1404 OUT-VPH_PWR U901 4.2V Test C923 U901 VPH_PWR Q202 4.2V Test Pin2 VBAT Q202 3.7-4.2V Test Pin3 VCHG J901 J901 Test Pin1 F901 Impedance value 0Ω LB901 Impedance value 0Ω Figure 9-3 9.4 SIM Card Failure...

  • Page 36: Sd Card Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.5 SD Card Failure Reference Figure 9-4 SD card failure Check whether J1402 is Replace the normal? J1402 Measure whether the voltage Replace the VREG_WLAN is normal? U201 Replace the U401 D1401 J1402...

  • Page 37: Vibration Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.6 Vibration Failure Reference Figure 9-4 Vibration failure Supply voltage (3V) Replace the for Motor, and then check U1401 whether it is vibrate? Measure whether Replace the the D1401 is normal? D1401 Replace the U201 2011-06-09 Huawei confidential.

  • Page 38: Display Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.7 Display Failure Reference Figure 9-5 Display failure Check whether Re-solder and BTB connector J1301 is replace J1301 normal? Measure whether power supply for Replace the LCD(VREG_MSME/MSMP) U201 is normal? Replace the LCD,...

  • Page 39: Touch Panel Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.8 Touch Panel Failure Reference Figure 9-5 TP failure Download the latest software version, check whether it is normal? Measure whether power supply for TP Replace U201 (VREG_MSMP) is normal? Measure whether Re-solder and...

  • Page 40: Camera Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.9 Camera Failure Reference Figure 9-6 Camera failure Measure whether Replace the the power voltage for camera U201 is normal? Replace camera module, then check whether it is OK? Check whether J1001 is...

  • Page 41: Audio Malfunction

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.10 Audio Malfunction 9.10.1 No Ring Tone Reference Figure 9-7 No ring tone Measure whether Replace the the impedance value of speaker speaker is about 8Ω? Measure whether L1501&L1502&D1501&D15 Replace faulty 02 are rosin joint and...

  • Page 42: Receiver Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.10.2 Receiver Failure Reference Figure 9-8 Receiver failure Measure whether Replace the the impedance ofreceiver is receiver about 32Ω？ Measure whether Replace faulty D1505&D1506&L1503& components L1504 are normal? Replace the U401 D1506 L1503 Impedance value 0Ω...

  • Page 43: Voice Transmitting Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.10.3 Voice Transmitting Failure Voice transmitting failure Replace MIC, check whether it is normal? Replace the U401 9.10.4 Earphone No Voice Reference Figure 9-9 Earphone no voice Inset a normal earphone, Replace the...

  • Page 44: Earphone Can"T Transmit Voice

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal LB1106 Impedance value 0Ω J1101 Z1101 LB1102 Impedance value 0Ω LB1104 Impedance value 0Ω U1101 VPH_PWR U1101 4.2V Test C1114 Figure 9-9 9.10.5 Earphone Can’t Transmit Voice Reference Figure 9-9 Earphone can‟t transmit voice...

  • Page 45: Wifi&Bt Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.11 WIFI&BT Failure Reference Figure 9-10 WIFI&BT Failure Measure whether Replace the the antenna is normal? antenna Replace Z4101, check whether the function is normal? Replace U4104, check whether the function is normal?

  • Page 46: Fm Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal U4104 RF switch BT&WiFi antenna spring U4201 Z4101 Ceramics Filter WLAN/Bluetooth U4101 /FM chip 37.4MHz X4101 Test Pin1 Figure 9-10 9.12 FM Failure Reference Figure 9-10 FM Failure Inset a normal earphone, Replace the...

  • Page 47: Gps Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.13 GPS Failure Reference Figure 9-11 GPS Failure Measure whether Replace the the antenna is normal? antenna Replace Z4001& Z4002, check whether the function is normal? Replace U4001, check whether the function is...

  • Page 48: Nfc Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.14 NFC Failure Reference Figure 9-12&9-13 NFC failure Measure whether Replace the the antenna is normal? antenna Check whether Replace faulty Q4401-Q4403 are normal？ components Replace U4401, check whether it is normal？ Replace the U401...

  • Page 49: Proximity Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal VBAT U4401 3.7-4.2V Test C4403 U4401 VREG_MSME U4401 1.8V Test C4409 Figure 9-13 9.15 Proximity Failure Reference Figure 9-14 Proximity failure Measure whether the power Replace the supply for accelerometer is U201 normal? Replace D1202, check whether it is normal？...

  • Page 50: Rf Failure

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.16 RF Failure 9.16.1 RF Receiving Failure-WCDMA 2100MHz Reference Figure 9-15 RF receiving failure Upgrade the software， measure whether it is normal? Measure whether Replace the the RF power supply voltage U201 is normal?
  • Page 51 U8650-NFC Maintenance Manual Basic Version V1.0 Internal Power Supply For RF： VREG_RFRX1 2.1V VREG_RFTX 2.7V VREG_MSMP 2.6V VREG_TCXO 2.85V VBAT 3.7-4.2V VREG_TCXO U201 2.85V Test C227 VREG_MSMP U201 2.6V Test C221 U201 VREG_RFRX1 U201 2.1V Test C223 VREG_RFTX U201 2.7V...

  • Page 52: Rf Receiving Failure-Wcdma 900Mhz

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.16.2 RF Receiving Failure-WCDMA 900MHz Reference Figure 9-15 RF receiving failure Upgrade the software， measure whether it is normal? Measure whether Replace the the RF power supply voltage U201 is normal? Measure whether two pins of...

  • Page 53: Rf Receiving Failure-Gsm 900&1800&1900Mhz

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.16.3 RF Receiving Failure-GSM 900&1800&1900MHz Reference Figure 9-15 RF receiving failure Upgrade the software, measure whether it is normal? Measure whether Replace the the RF power supply voltage U201 is normal? Measure whether two pins of...

  • Page 54: Rf Transmitting Failure-Wcdma 2100Mhz

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.16.4 RF Transmitting Failure-WCDMA 2100MHz Reference Figure 9-15 Transmitting failure Upgrade the software. Then check whether it is normal? Measure RF power supply Replace the voltage whether is normal? U201 Replace U3302, check whether it is normal？...

  • Page 55: Rf Transmitting Failure-Wcdma 900Mhz

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.16.5 RF Transmitting Failure-WCDMA 900MHz Reference Figure 9-15 Transmitting failure Upgrade the software. Then check whether it is normal? Measure RF power supply Replace the voltage whether is normal? U201 Replace U3401, check whether it is normal？...

  • Page 56: Rf Transmitting Failure-Gsm 1800&1900Mhz

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.16.6 RF Transmitting Failure-GSM 1800&1900MHz Reference Figure 9-15 Transmitting failure Upgrade the software. Then check whether it is normal? Measure RF power supply Replace the voltage whether is normal? U201 Replace U3501, check whether it is normal？...

  • Page 57: Rf Transmitting Failure-Gsm 900Mhz

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal 9.16.7 RF Transmitting Failure-GSM 900MHz Reference Figure 9-15 Transmitting failure Upgrade the software. Then check whether it is normal? Measure RF power supply Replace the voltage whether is normal? U201 Replace U3501, check whether it is normal？...

  • Page 58: Weld Points Indicator Chart For Pcb And Bga Chip

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal Weld Points Indicator Chart for PCB and BGA Chip ：Empty point ：GND 2011-06-09 Huawei confidential. No spreading without permission. Page 58 of 62...
  • Page 59 U8650-NFC Maintenance Manual Basic Version V1.0 Internal ：Empty point ：GND 2011-06-09 Huawei confidential. No spreading without permission. Page 59 of 62...

  • Page 60: Functional Test

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal Functional Test 11.1 Keypad Introduction Power key Volume up key Volume down key Search key Home key Back key Menu key 11.2 MMI Test Input *#*#2846579#*#* to enter the the engineering mode, select MMI Test_Ⅱ, then pressing volume down key to start MMI test.
  • Page 61 U8650-NFC Maintenance Manual Basic Version V1.0 Internal Item Test method and information The LCD will display white screen. The LCD will display black screen. LCD test The LCD will display the 3-color screen(red、green、blue). LCD backlight The LCD will display white lines color, and its luminance will change all the test time.

  • Page 62: Voice Call Test

    U8650-NFC Maintenance Manual Basic Version V1.0 Internal Item Test method and information All scanned devices will be listed in this screen. (Please make sure that Bluetooth test there is another BT device is on and around the tested phone) In three-dimensional space for mobile phones with the XYZ are at an angle...

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