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Xperia S LT26ii

Sony Xperia S LT26i, Xperia S LT26ii Troubleshooting Manual

1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
Troubleshooting Guide
Xperia S
LT26i, LT26ii, SO-02D
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
2(57)
CONTENTS
1 Problem Areas ................................................................................ 4
1.1 Power ................................ .................................................................... 4
1.1.1 Will not power on or will switch off randomly ........................................... 4
1.2 Keys ...................................................................................................... 5
1.2.1 Menu, Home and Back Keys ....................................................................... 5
1.2.2 Key Camera .................................................................................................. 5
1.2.3 Key Volume .................................................................................................. 6
1.2.4 Key On/Off .................................................................................................... 7
1.3 Touch Screen ....................................................................................... 9
1.3.1 Touch Screen malfunction .......................................................................... 9
1.4 Display ................................................................................................ 11
1.4.1 Graphics & Illumination ............................................................................ 11
1.5 LED/Illumination ................................................................................. 13
1.5.1 LED/Illumination ........................................................................................ 13
1.5.2 Key Illumination ......................................................................................... 14
1.6 Speaker ............................................................................................... 16
1.6.1 Loudspeaker .............................................................................................. 16
1.7 Earphone ............................................................................................ 18
1.7.1 Earphone .................................................................................................... 18
1.8 Microphone ......................................................................................... 19
1.8.1 Microphone ................................................................................................ 19
1.8.2 Secondary Microphone ............................................................................. 22
1.9 Vibrator ............................................................................................... 24
1.9.1 Vibrator not generating alerts .................................................................. 24
1.10 Camera ................................................................................................ 26
1.10.1 Camera defects .......................................................................................... 26
1.10.2 Secondary Camera .................................................................................... 27
1.11 Flash LED ........................................................................................... 28
1.11.1 Flash LED not flashing .............................................................................. 28
1.12 Bluetooth and W-LAN malfunctions ................................................. 29
1.12.1 Bluetooth and W-LAN malfunctions ........................................................ 29
1.13 NFC ..................................................................................................... 30
1.13.1 NFC malfunctions ...................................................................................... 30
1.14 GPS ..................................................................................................... 31
1.14.1 GPS malfunctions ...................................................................................... 31
1.15 Compass ............................................................................................. 32
1.15.1 Compass fails ............................................................................................ 32
1.16 Accelerometer .................................................................................... 33
1.16.1 Accelerometer test fails ............................................................................ 33
1.17 Gyroscope .......................................................................................... 34
1.17.1 Gyroscope test fails .................................................................................. 34
1.18 Ambient Light Sensor ........................................................................ 35
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
3(57)
1.18.1 Light Sensor malfunctions ....................................................................... 35
1.19 Proximity switch ................................................................................. 37
1.19.1 Proximity switch malfunctions ................................................................. 37
1.20 Pressure Sensor ................................................................................. 39
1.20.1 Pressure Sensor test failed ...................................................................... 39
1.21 Water Proof ......................................................................................... 40
1.21.1 Water Proof test failed ............................................................................... 40
1.22 Real time clock ................................................................................... 41
1.22.1 Real time clock test failed ......................................................................... 41
1.23 Total call time ................................................................ ..................... 42
1.23.1 Total call time failed .................................................................................. 42
1.24 External Memory ................................................................................ 43
1.24.1 External Memory test failed ...................................................................... 43
1.25 Security ............................................................................................... 44
1.25.1 Security failed ............................................................................................ 44
1.26 FM Radio ............................................................................................. 45
1.26.1 No/Poor FM Radio reception .................................................................... 45
1.27 Battery Health test ............................................................................. 47
1.27.1 Battery Health test fails ............................................................................. 47
1.28 HDMI Test ........................................................................................... 48
1.28.1 HDMI test fails ............................................................................................ 48
1.29 Network & Signal ................................................................................ 49
1.29.1 No/Poor signal ........................................................................................... 49
1.30 SIM ...................................................................................................... 52
1.30.1 SIM not detected ........................................................................................ 52
1.30.2 Incorrect SIM indicated ............................................................................. 52
1.31 Charging ............................................................................................. 53
1.31.1 Battery will not charge .............................................................................. 53
1.32 HandsFree by Wire ............................................................................. 54
1.32.1 Connection to Portable HandsFree fails .................................................. 54
1.33 Data Communication ......................................................................... 56
1.33.1 Data transfer via System Connector fails ................................................ 56
2 Revision History ........................................................................... 57
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
4(57)
1 Problem Areas
1.1 Power
1.1.1 Will not power on or will switch off randomly
Check:
Check whether the phone vibrates and the Keyboard illuminates after the Key On/Off is depressed.
Action:
If activation of the Vibrator is detected, refer to section 1.4 ‘Display’.
If NO activation of the Vibrator is detected, check that the battery is charging when connected to a charger. Follow test instruction (Charging via USB), Diagnostic Battery / Charging status.
Check:
Inspect the contact pads on the Battery.
Action:
1. If dirty or oxidized – clean the pads.
2. If damaged – replace the Battery.
Check:
Inspect the Battery Contact pins on the main PBA.
Action:
1. If dirty or oxidized – clean the contact pins.
2. If adhesive is detected on the contact pins, use an eraser
to gently rub off the adhesive.
3. If damaged – replace board.
4. Check current draw in off mode by using “Dummy Battery”
(max 1 mA)
5. Replace Board
Check:
Inspect the Key On/Off.
Action:
1. Refer to section 1.2.4 ‘Key On/Off’.
2. Replace board.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
5(57)
Problem Areas
1.2 Keys
1.2.1 Menu, Home and Back Keys
Check:
Inspect the menu, home and back keys on the Cover Front.
Action:
1. Refer to the section 1.3 ‘Touch Screen’.
2. Replace board.
1.2.2 Key Camera
Check:
Inspect the Key Camera on the Cover Front Assy.
Action:
If the Key Camera is damaged – replace it.
Check:
Inspect the Key Camera push switch on the Main FPC.
Action:
If (a) or (b) is dirty or clogged – clean it.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
6(57)
Problem Areas: Keys
Check:
Check the BtB connector of the FPC Main Assy to the Main PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean both sides of the BtB
connector.
Check:
Inspect the FPC Main Assy.
Action:
1. If the FPC Main Assy or its BtB connector is damaged –
replace the Main FPC.
2. Replace board.
1.2.3 Key Volume
Check:
Inspect the Key Volume on the Cover Front Assy.
Action:
If the Key Volume is damaged – replace it.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
7(57)
Problem Areas: Keys
Check:
Inspect the key volume push switch on the FPC Main Assy.
Action:
If (a) or (b) or (c) is dirty or clogged – clean it.
Check:
Check the BtB connector of the FPC Main Assy to the Main PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean both sides of the BtB
connector.
Check:
Inspect the FPC Main Assy.
Action:
1. If the FPC Main Assy or its BtB connector is damaged –
replace the FPC Main Assy.
2. Replace board.
1.2.4 Key On/Off
Check:
Inspect the Key On/Off on Cover Front Assy.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
8(57)
Problem Areas: Keys
Action:
If the Key On/Off is damaged – replace it.
Check:
Inspect the BtB connector of the FPC Jack Assy to the main PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean both sides of the BtB
connector.
Check:
Inspect the FPC Jack Assy.
Action:
1. If the FPC Jack Assy or its BtB connector is damaged –
replace the FPC Jack Assy.
2. Replace board.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
9(57)
Problem Areas
1.3 Touch Screen
1.3.1 Touch Screen malfunction
Check:
Inspect the touch screen of the Cover Front.
Action:
1. If dirty – clean it.
2. If the touch screen is damaged – replace the Cover Front
Assy.
Check:
Inspect the BtB connector of the Cover Front Assy to the Main FPC.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean both sides of the BtB
connector.
Check:
Inspect the Cover Front Assy.
Action:
If the Cover Front Assy or its BtB connector is damaged – replace the Cover Front Assy.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
10(57)
Problem Areas :Touch Screen
Check:
Inspect the BtB connector of the FPC Main Assy to the Main PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean both sides of the BtB
connector.
Check:
Inspect the Main FPC.
Action:
1. If the FPC Main Assy or its BtB connector is damaged –
replace the Main FPC.
2. Replace board.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
11(57)
Problem Areas
1.4 Display
1.4.1 Graphics & Illumination
Check:
Check whether the phone vibrates after the Key On/Off has been pressed.
Action:
If the activation described above is not detected, refer to section 1.1 ‘Power’.
Check:
Inspect the ZIF connector of the Cover Front Assy.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean both sides of the BtB
connector.
Check:
Inspect the BtB connector of the Cover Front Assy to the Main FPC.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean both sides of the BtB
connector.
Check:
Inspect the Cover Front Assy.
Action:
If the Cover Front Assy or its BtB connector is damaged – replace the Cover Front Assy.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
12(57)
Problem Areas: Display
Check:
Inspect the BtB connector of the FPC Main Assy to the main PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean both sides of the BtB
connector.
Check:
Inspect the Main FPC.
Action:
1. If the FPC Main Assy or its BtB connector is damaged –
replace the Main FPC.
2. Replace board.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
13(57)
Problem Areas
1.5 LED/Illumination
1.5.1 LED/Illumination
Check:
Inspect the window of LED red/green/blue on the Cover Front Assy.
Action:
1. If dirty – clean it.
2. If the window is damaged – replace the Cover Front Assy.
Check:
Inspect the BtB connector of the FPC Jack Assy to the main PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean both sides of the BtB
connector.
Check:
Inspect the Illumination LED on the FPC Jack Assy.
Action:
If dirty – clean it.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
14(57)
Problem Areas: Illumination
Check:
Inspect the FPC Jack Assy.
Action:
1. If the FPC Jack Assy or its BtB connector is damaged –
replace the FPC Jack Assy.
2. Replace board.
1.5.2 Key Illumination
Check:
Inspect the Illumination window on the Cover Front Assy.
Action:
1. If dirty – clean it.
2. If the window is damaged – replace the Cover Front Assy.
Check:
Inspect the LED window on Cover Transparent Assy.
Action:
1. If dirty – clean it.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
15(57)
Problem Areas: Illumination
2. If the window is damaged – replace the Cover
Transparent Assy.
Check:
Inspect the BtB connector of the FPC Main Assy to the main PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean both sides of the BtB
connector.
Check:
Inspect the Illumination LED on the Main FPC.
Action:
1. If dirty – clean it.
Check:
Inspect the Main FPC.
Action:
1. If the FPC Main Assy or its BtB connector is damaged –
replace the Main FPC.
2. Replace board.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
16(57)
Problem Areas
1.6 Speaker
1.6.1 Loudspeaker
Check:
Inspect the Loudspeaker‘s external port on the Cover Rear Assy.
Action:
1. If clogged – clean the speaker port or replace the Cover
Rear Assy.
2. If the Cover Rear Assy is damaged – replace the Cover
Rear Assy.
Check:
Inspect the Loudspeaker‘s mesh on the Rear Frame Assy.
Action:
1. If clogged – clean the speaker mesh.
2. If the mesh is damaged – replace the Rear Frame Assy.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
17(57)
Problem Areas: Speaker
Check:
Inspect the Loudspeaker’s pins on the Rear Frame Assy and
the pads on the Main PBA.
Action:
1. If dirty – clean them.
2. If the Loudspeaker is damaged – replace the
Loudspeaker.
3. Replace board.
Trouble Shooting Guide Repair Instruction Mechanical/
1257-2931 Rev 6
Sony Mobile Communications AB – Company Internal
18(57)
Problem Areas
1.7 Earphone
1.7.1 Earphone
Check:
Inspect the Ear Speaker‘s external port.
Action:
1. If clogged – clean it.
2. If the Net Receiver on the Cover Front Assy is damaged –
replace the Cover Front Assy.
Check:
Inspect the Ear Speaker pins and the pads on the Main PBA.
Action:
1. If dirty – clean them.
2. If the Ear Speaker is damaged – replace the Ear Speaker.
3. Replace board
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