Lenovo S960 Service Manual
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Lenovo S960 Service Manual

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  • Page 1 Lenovo S960 Service Manual Service-Manual.ir LENOVO...

  • Page 2: Table Of Contents

    LENOVO S960 手机维修手册 Content CELLPHONE APPEARANCE ....................5 LAYOUT OF MOTHERBOARD ....................5 BASEBAND ............................ 9 ........................... 9 DISPLAY When the device is turned on there’s nothing on screen ............9 3.1.1 LCD backlight doesn’t light up..................10 3.1.2 .
  • Page 3 GPS - ................. 34 SEARCH SATELLITES AND LOCATE FM - ......................35 SEARCH CHANNELS HOW TO ASSEMBLE AND DISSEMBLE LENOVO S960 ............ 36 LENOVO S960 ................36 SSEMBLY SEQUENCE OF ’ LENOVO S960 ............... 37 OS AND DON TS WHEN ASSEMBLING...

  • Page 5: Cellphone Appearance

    LENOVO S960 Cellphone Service Manual 1 Cellphone appearance Layout of motherboard Front of motherboard: Page 5...
  • Page 6 LENOVO S960 Cellphone Service Manual Page 6...
  • Page 7 LENOVO S960 Cellphone Service Manual Back of motherboard: Page 7...
  • Page 8 LENOVO S960 Cellphone Service Manual Page 8...

  • Page 9: Baseband

    LENOVO S960 Cellphone Service Manual 3 Baseband Electronic circuit diagram 3.1 LCD display 3.1.1 When the device is turned on there’s nothing on screen Page 9...

  • Page 10: Lcd Backlight Doesn't Light Up

    LENOVO S960 Cellphone Service Manual Screen is blank. Check whether the connectors of the LCD are attached correctly. Re-install FPC. Check whether the cellphone works. Check whether the EMI components in LCD channel on motherboard have dry joint problems. Re-solder the EMI components.

  • Page 11: Cameras Do Not Work Properly

    LENOVO S960 Cellphone Service Manual 3.2 Cameras do not work properly. 3.2.1 Back camera does work properly. Can’t take photos. Dissemble the unit. Check whether the Camera module is detached. Re-assemble the module. Check whether it can take photos. Replace the Camera module.

  • Page 12: Front Camera Doesn't Work Properly

    LENOVO S960 Cellphone Service Manual 3.2.2 Front camera doesn’t work properly. Can’t take photos. Dissemble the unit. Check whether the Camera module is detached. Re-assemble the module. Check whether it can take photos. Replace the Camera module. Check whether it can take photos.

  • Page 13: Ring And Vibration

    LENOVO S960 Cellphone Service Manual 3.3 Ring and Vibration 3.3.1 It does not vibrate. It does not vibrate. Use a multi-meter to check whether the Replace the terminal voltage difference between the motor. two leads of the motor in the Motor Vibration mode is higher than 2.6V.
  • Page 14 LENOVO S960 Cellphone Service Manual It does not ring. Check whether the connections of the main FPC connectors are OK. Check whether the contacts between the speaker spring clips and the sound Replace the sound chamber stand. chamber stand are good.
  • Page 15 LENOVO S960 Cellphone Service Manual It does not ring. Check whether the connections of the main FPC connectors are OK. Check whether the contacts between the speaker spring clips and the sound Replace the sound chamber stand are good. chamber stand.

  • Page 16: Charging

    LENOVO S960 Cellphone Service Manual 3.4 Charging 3.4.1 It doesn’t show charging indicator when charger is plugged Page 16...
  • Page 17 LENOVO S960 Cellphone Service Manual It doesn’t show the charging indicator when charger is plugged in. Replace the charger. Check Replace the whether it can charge normally. charger. Check whether there’s any rips Replace the on the battery FPC. battery.

  • Page 18: It Shows The Charging Indicator. But The Battery Can't Be Fully Charged

    LENOVO S960 Cellphone Service Manual 3.4.2 It shows the charging indicator. But the battery can’t be fully charged. It shows the charging indicator. But the battery can’t be fully charged. Replace the battery and try again to see whether the battery can be fully charged.

  • Page 19: Keyboard And Keyboard Backlight

    LENOVO S960 Cellphone Service Manual 3.5 Keyboard and keyboard backlight 3.5.1 Keyboard can’t work properly. The Power On button can’t work properly. Check whether the main FPC Replace the main connectors are fastened properly, and FPC. FPC is broken. Is the Voltage to Ground at PWRKEY...

  • Page 20: Keyboard Backlight Doesn't Light Up

    LENOVO S960 Cellphone Service Manual 3.5.2 Keyboard backlight doesn’t light up. Keyboard backlight doesn’t light up. Re-solder ICON LED FPC. Is ICON LED FPC soldered properly? Is the motor switching FPC soldered Re-solder the motor properly? switching FPC. Replace U1301.

  • Page 21: Audio Problems During Phone Calls

    LENOVO S960 Cellphone Service Manual 3.6 Audio problems during phone calls 3.6.1 You can’t hear the person you are talking to during a phone call. The receiver is silent. Check whether the connections of the main FPC connectors are OK.

  • Page 22: You Can't Be Heard By The Person You Are Talking To During A Phone Call

    LENOVO S960 Cellphone Service Manual 3.6.2 You can’t be heard by the person you are talking to during a phone call. You can’t be heard by the person you are talking to. Check to see whether MIC and surrounding components need Re-solder.

  • Page 23: Device Will Not Turn On

    LENOVO S960 Cellphone Service Manual 3.7 Device will not turn on. Device will not turn on. Are the main FPC connectors fastened properly? Re-fasten. Is there a big current when power supply of Motherboard is damaged. motherboard is the phone’s only power Replace motherboard.

  • Page 24: Radio Frequency

    LENOVO S960 Cellphone Service Manual 4 Radio frequency 4.1 GSM calibration during production 4.1.1 GSM AFC calibration  Problem: AFC calibration failed.  Reason: Connections of RF test cable are not reliable during the calibration. TCXO is fitted reversely or has a dry joint problem. Receiving channel is open.

  • Page 25: Gsm Afc Calibration

    LENOVO S960 Cellphone Service Manual dry joint problems.  Troubleshooting: Rx path loss calibration failed. Check the calibration report to see whether all three frequency bands failed. Does L2133 Check whether Re-connect Re-solder. Did GSM have a dry connections of RF cable...
  • Page 26 LENOVO S960 Cellphone Service Manual module’s RF input circuits are shifted, and shield bracket is short circuit.  Troubleshooting: PCL calibration failed. Check the calibration report to see whether every frequency band failed. Is AGC calibration DCS/PCS Analyse Did GSM...

  • Page 27: Gsm Comprehensive Test

    LENOVO S960 Cellphone Service Manual 4.2 GSM comprehensive test 4.2.1 Switching spectrum template are over the limits.  Switching spectrum and PVT template of three frequency bands (GSM, DCS and PCS) are over the limits.  If C2209 on PA’s V_ramp signal cable is damaged or has a dry joint problem, switching spectrum may become over the limits.

  • Page 28: Phase Error Is Too Big

    LENOVO S960 Cellphone Service Manual Frequency Error is over the limit. Re-calibrate. Check whether X2101 is damaged or has a dry joint problem. Replace components which have dry joint problems. 4.2.3 Phase Error is too big.  Problem: Phase Error is over the limit in whole-unit test.

  • Page 29: Power Output Related Problems

    LENOVO S960 Cellphone Service Manual 4.2.4 Power output related problems  Problem: The device can turn on and receive signals normally. But there’s no power output or power output is very low, when it is trying to output power of double frequency bands or single frequency band.

  • Page 30: Wcdma Rx Path Loss Calibration

    LENOVO S960 Cellphone Service Manual 4.3.1 WCDMA Rx Path Loss calibration Problem: Item Rx Path Loss failed. Reason: Receiving channel has a problem. Troubleshooting: Rx Path Loss failed. Do PA module (U2201) and RF connector (CON2201) have a dry joint Re-solder.
  • Page 31 LENOVO S960 Cellphone Service Manual TPC failed. Check whether Re-connect and connections of RF cable calibrate. and fittings are reliable. Do RF connector CON2201, PA module (U2201), C2210 and C2211 have dry joint Re-solder. problems? Is WCDMA PA (U2202, U2203) fitted reversely? Or does it have a Re-solder.

  • Page 32: Wcdma Comprehensive Test

    LENOVO S960 Cellphone Service Manual 4.4 WCDMA comprehensive test 4.4.1 ACLR or SEM Problem: ACLR or SEM. Reason: It’s not calibrated; or WCDMA PA (U2202, U2203) has a dry joint problem; or RF receiver and transmitter (U2105) is faulty. Troubleshooting: ACLR or SEM Re-perform WCDMA calibration.

  • Page 33: Frequencyerr

    LENOVO S960 Cellphone Service Manual 4.4.3 FrequencyErr Problem: FrequencyErr Reason: It’s not calibrated; or there’s outside interference. Troubleshooting: Re-calibrate. 4.5 WiFi test Problem: Can’t find WiFi Reason: WiFi/BT/GPS/FM four-in-one chip (U2306) and its surrounding circuits have soldering problems. Troubleshooting: Can’t find WiFi.

  • Page 34: Use Of Bluetooth

    LENOVO S960 Cellphone Service Manual 4.6 Use of Bluetooth Problem: Can’t find Bluetooth. Reason: WiFi/BT/GPS/FM four-in-one chip and its surrounding circuits have soldering problems. Troubleshooting: Can’t find BT. Does MT6628(U2306) have a dry Re-solder. joint problem? Re-solder. Does U2301 have a dry joint problem? Replace main chip MT6628(U2306).

  • Page 35: Fm - Search Channels

    Replace of the Power power connection module. normal? modules X0201, chip LENOVO S960 Cellphone Service Manual components Check C0201 again. surrounding whether the B404. whether again. current-limiti LEDs which metal dome U301 whether the again.

  • Page 36: How To Assemble And Dissemble Lenovo S960

    LENOVO S960 Cellphone Service Manual 5 How to assemble and dissemble LENOVO S960 Assembly sequence of LENOVO S960 Fig. 5-1 Main assembly exploded view of LENOVO S960 For details, see the attachment. Removal steps of S960 Battery Cover.ppt Page 36...

  • Page 37: Dos And Don'ts When Assembling Lenovo S960

    LENOVO S960 Cellphone Service Manual LENOVO S960 5.2 Dos and don’ts when assembling (1) Using the location line, attach conductive back glue and conductive graphite to the steel sheet of the front cover. To avoid interference with the FPC of LCD itself, the position of the LCD conductive adhesive must be exact.

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