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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...
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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...
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.
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...
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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...
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.
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U8650-NFC Maintenance Manual Basic Version V1.0 Internal 2011-06-09 Huawei confidential. No spreading without permission. Page 16 of 62...
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.
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.
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.
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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...
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.
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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.
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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.
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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.
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.
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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.
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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.
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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...
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.
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.
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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...
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?
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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...
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...
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...
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.
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,...
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...
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...
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...
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?
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...
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?...
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?
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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...
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...
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...
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?...
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?...
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?...
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?...
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...
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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...
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.
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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.
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...