Sony ST26i Troubleshooting Manual
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Sony ST26i Troubleshooting Manual

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Troubleshooting Guide
- mechanical -
ST26i, ST26a
1268-3899 Rev 3
©
Sony Mobile Communications AB – Company Internal

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  • Page 1 Troubleshooting Guide - mechanical - ST26i, ST26a 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal...

  • Page 2: Table Of Contents

    1.17 Real Time Clock ................. 29 1.17.1 Real Time Clock test fails ................. 29 1.18 Total call time ..................30 1.18.1 Total call time fails ..................30 1.19 External Memory ................31 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 2(44)
  • Page 3 1.26 HandsFree by Wire ................42 1.26.1 Connection to Portable HandsFree fails ..........42 1.27 Data Communication ................. 43 1.27.1 Data transfer via System Connector fails ..........43 Revision History ................44 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 3(44)

  • Page 4: Problem Areas

    3. If damaged – replace board. Check: Inspect the on/off key. Action: 1. Refer to section 1.2.3 ‘Key On/Off’. 2. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 4(44)

  • Page 5: Keys

    Inspect the volume key (a) and the volume key push switch (b). Action: 1. If dirty – clean them. 2. If the volume key is damaged – replace the Side Key. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 5(44)

  • Page 6: On/Off Key

    Inspect the external area of the on/off key. Action: If dirty – clean it. Check: Inspect the on/off key (a) and the on/off key push switch (b). Action: 1. If dirty – clean them. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 6(44)
  • Page 7 2. If dirty or oxidized – clean it. 3. If the BtB connector or the on/off key push switch is damaged – replace the SIM SD Side Key FPC. 4. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 7(44)

  • Page 8: Touch Screen

    Assembly is damaged – replace the Front Cover Display Assembly. 4. Replace board. Note: Calibrate the Touch Panel 1270-6729 Trouble Shooting Application – mechanical after replacements of action 3 or action 4. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 8(44)

  • Page 9: Display

    2. If dirty or oxidized – clean it. 3. If the display or the FPC of the Front Cover Display Assembly is damaged – replace the Front Cover Display Assembly. 4. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 9(44)

  • Page 10: Led/Illumination

    Front Cover Display Assembly. Action: 1. If dirty or clogged – clean them. 2. If the Proximity rubber is damaged – replace it. 3. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 10(44)

  • Page 11: Menu/Home/Back Keys Illumination

    1. If not properly connected – disconnect and reconnect. 2. If dirty or oxidized – clean it. Check: Inspect the LEDs on the Sub Board Assembly. Action: 1. If dirty– clean them. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 11(44)
  • Page 12 1. If not properly connected – disconnect and reconnect. 2. If dirty or oxidized – clean it. 2. If the Link FPC is damaged – replace it. 3. Replace Board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 12(44)

  • Page 13: Speaker

    Inspect the mesh of the Loudspeaker on the Rear Cover. Action: 1. If dirty – clean it. 2. If the mesh is damaged – replace the Rear Cover. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 13(44)
  • Page 14 2. If dirty or oxidized – clean it. 3. If the pads or the ZIF connector of the Sub Board Assembly is damaged – replace the Sub Board Assembly. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 14(44)
  • Page 15 2. If dirty or oxidized – clean it. 3. If the ZIF connector or the FPC of the Link FPC is damaged – replace the Link FPC. 4. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 15(44)

  • Page 16: Earphone

    Inspect the Receiver’s pins and the contact pins on the main PBA. Action: 1. If dirty – clean them. 2. If the pins of the Receiver are damaged – replace the Receiver. 3. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 16(44)

  • Page 17: Microphone

    Inspect the ZIF connector of the Link FPC to the Sub Board Assembly. Action: 1. If not properly connected – disconnect and reconnect. 2. If dirty or oxidized – clean it. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 17(44)
  • Page 18 2. If dirty or oxidized – clean it. 3. If the ZIF connector or the FPC of the Link FPC is damaged – replace the Link FPC. 4. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 18(44)

  • Page 19: Vibrator

    2. If dirty or oxidized – clean it. 3. If the ZIF connector or the FPC of the Link FPC is damaged – replace the Link FPC. 4. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 19(44)

  • Page 20: Camera

    1. If not properly connected – disconnect and reconnect. 2. If dirty or oxidized – clean it. Check: Inspect the Main Camera. Action: 1. If the Main Camera is damaged – replace it. 2. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 20(44)

  • Page 21: Video Call Camera Defects

    Proximity rubber on the Front Cover Display Assembly. Action: 1. If dirty or clogged – clean them. 2. If the Proximity rubber is damaged – replace it. 3. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 21(44)

  • Page 22: Flash Led

    Inspect the Rubber Flash Led White. Action: 1. If the Rubber Flash Led White is not properly mounted – remounted it 2. If the Rubber Flash Led White is damaged – replace it. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 22(44)
  • Page 23 Troubleshooting Guide (mech) Problem Areas: Flash LED Check: Inspect the flash LED on the main PBA. Action: 1. If dirty or clogged – clean it. 2. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 23(44)

  • Page 24: Bluetooth And Wlan

    PBA. Action: 1. If dirty or oxidized – clean the pads and pins. 2. If the pads are damaged – replace the Antenna BT WIFI. 3. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 24(44)

  • Page 25: Gps

    PBA. Action: 1. If dirty or oxidized – clean them. 2. If the pad is damaged – replace the Antenna GPS. 3. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 25(44)

  • Page 26: Compass

    Troubleshooting Guide (mech) Problem Areas 1.14 Compass 1.14.1 Compass fails Action: Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 26(44)

  • Page 27: Accelerometer

    Troubleshooting Guide (mech) Problem Areas 1.15 Accelerometer 1.15.1 Accelerometer test fails Action: Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 27(44)

  • Page 28: Proximity Switch

    PBA and the Proximity rubber on the Front Cover Display Assembly. Action: 1. If dirty or clogged – clean them. 2. If the Proximity rubber is damaged – replace it. 3. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 28(44)

  • Page 29: Real Time Clock

    Troubleshooting Guide (mech) Problem Areas 1.17 Real Time Clock 1.17.1 Real Time Clock test fails Action: Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 29(44)

  • Page 30: Total Call Time

    Troubleshooting Guide (mech) Problem Areas 1.18 Total call time 1.18.1 Total call time fails Action: Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 30(44)

  • Page 31: External Memory

    3. If the BtB connector or the memory holder of the SIM SD Side Key FPC is damaged – replace the SIM SD Side Key FPC. 4. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 31(44)

  • Page 32: Security

    Troubleshooting Guide (mech) Problem Areas 1.20 Security 1.20.1 Security fails Action: Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 32(44)

  • Page 33: Fm Radio

    If dirty or oxidized – clean it. Check: Inspect the audio jack on the main PBA. Action: 1. If dirty or oxidized – clean it. 2. If damaged – replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 33(44)

  • Page 34: Verify Certificates

    Troubleshooting Guide (mech) Problem Areas 1.22 Verify Certificates 1.22.1 Verify certificates fails Action: Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 34(44)

  • Page 35: Network & Signal

    Inspect the ZIF connector of the Link FPC to the Sub Board Assembly. Action: 1. If not properly connected – disconnect and reconnect. 2. If dirty or oxidized – clean it. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 35(44)
  • Page 36 1. If not properly connected – disconnect and reconnect. 2. If dirty or oxidized – clean it. 3. If the ZIF connector of the Link FPC is damaged – replace the Link FPC 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 36(44)
  • Page 37 1. If not properly connected – disconnect and reconnect it. 2. If the Coaxial Cable or its two connectors is damaged – replace the Coaxial Cable. 3. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 37(44)

  • Page 38: Sim

    3. If the BtB connector or the SIM card holder of the SIM SD Side Key FPC is damaged – replace the SIM SD Side Key FPC. 4. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 38(44)

  • Page 39: Incorrect Sim-Card Adapter

    Check whether the phone is locked to a particular operator and whether the correct operator SIM is being used. Action: 1. Use a proper operator SIM or test SIM. 2. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 39(44)

  • Page 40: Charging

    Check: Inspect the USB connector. Action: If dirty or oxidized – clean the connector. Check: Inspect the USB connector. Action: If dirty or oxidized – clean the connector. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 40(44)
  • Page 41 Troubleshooting Guide (mech) Problem Areas: Charging Check: Inspect the USB connector on the main PBA. Action: 1. If dirty or oxidized – clean the connector. 2. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 41(44)

  • Page 42: Handsfree By Wire

    If dirty or oxidized – clean the connector. Check: Inspect the audio jack on the main PBA. Action: 1. If dirty or oxidized – clean it. 2. If damaged – replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 42(44)

  • Page 43: Data Communication

    If dirty or oxidized – clean the connector. Check: Inspect the USB connector on the main PBA. Action: 1. If dirty or oxidized – clean the connector. 2. Replace board. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 43(44)

  • Page 44: Revision History

    Initial release 2012-Oct-11 Add Touch Panel calibration information after its replacement in chapter1.3 Update Micro-SIM adapter to 1257-9796 in chapter1.24.2 2012-Oct-15 Update Touch Panel calibration application P/N to 1270-6729. 1268-3899 Rev 3 © Sony Mobile Communications AB – Company Internal 44(44)

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St26a

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