Sony Xperia M, Xperia M Dual, C1904, C1905, C2004 Troubleshooting Guide
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TM
TM
Troubleshooting Guide
- mechanical -
Xperia
M, Xperia
C1904, C1905, C2004, C2005
1277-1356 Rev 2
Sony Mobile Communications AB – Company Internal
M Dual
Company Internal
CONTENTS
Troubleshooting Guide (mech)
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 Back/Home/Multi task Keys ........................................................................ 5
1.2.2 Camera Key .................................................................................................. 5
1.2.3 Volume Key .................................................................................................. 6
1.2.4 On/Off key .................................................................................................... 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 ................................................................................. 12
1.5.1 LED/Illumination ........................................................................................ 12
1.6 Speaker ............................................................................................... 14
1.6.1 Loudspeaker .............................................................................................. 14
1.7 Earspeaker .......................................................................................... 17
1.7.1 Earspeaker ................................................................................................. 17
1.8 Microphone ......................................................................................... 18
1.8.1 Microphone ................................................................................................ 18
1.8.2 Secondary Microphone ............................................................................. 20
1.9 Vibrator ............................................................................................... 21
1.9.1 Vibrator not generating alerts .................................................................. 21
1.10 Camera ................................................................................................ 22
1.10.1 Camera defects .......................................................................................... 22
1.11 Bluetooth and WLAN ......................................................................... 23
1.11.1 Bluetooth or WLAN connection failure .................................................... 23
1.12 GPS ..................................................................................................... 24
1.12.1 GPS malfunctions ...................................................................................... 24
1.13 Compass ............................................................................................. 25
1.13.1 Compass fails ............................................................................................ 25
1.14 Accelerometer .................................................................................... 26
1.14.1 Accelerometer test fails ............................................................................ 26
1.15 Light Sensor ....................................................................................... 27
1.15.1 Light Sensor malfunctions ....................................................................... 27
1.16 Proximity switch ................................................................................. 28
1.16.1 Proximity switch malfunctions ................................................................. 28
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
1277-1356 Rev 2
Sony Mobile Communications AB –
2(45)
Company Internal
Troubleshooting Guide (mech)
1.19 External Memory ................................................................................ 31
1.19.1 Memory Card not detected ....................................................................... 31
1.20 Security ............................................................................................... 32
1.20.1 Security fails .............................................................................................. 32
1.21 FM Radio ............................................................................................. 33
1.21.1 No/Poor FM Radio reception .................................................................... 33
1.22 Verify Certificates ............................................................................... 34
1.22.1 Verify certificates fails............................................................................... 34
1.23 Network & Signal ................................................................................ 35
1.23.1 No/Poor signal ........................................................................................... 35
1.24 SIM ...................................................................................................... 37
1.24.1 SIM not detected ........................................................................................ 37
1.24.2 Incorrect SIM indicated ............................................................................. 38
1.25 Charging ............................................................................................. 39
1.25.1 Battery will not charge .............................................................................. 39
1.26 HandsFree by Wire ............................................................................. 40
1.26.1 Connection to Portable HandsFree fails .................................................. 40
1.27 Data Communication ......................................................................... 41
1.27.1 Data transfer via System Connector fails ................................................ 41
1.28 Flash LED Defects .............................................................................. 42
1.28.1 Flash LED defects ..................................................................................... 42
1.29 NFC ..................................................................................................... 44
1.29.1 NFC malfunctions ...................................................................................... 44
2 Revision History ........................................................................... 45
1277-1356 Rev 2
Sony Mobile Communications AB –
3(45)
Company Internal
1 Problem Areas
1.1 Power
1.1.1 Will not power on or will switch
off randomly
Check:
Inspect whether the phone vibrates after the on/off key is
pressed.
Action:
If activation of the vibrator is detected, refer to section 1.4
‘Display’.
Check:
Inspect the contact pads on the battery.
Action:
1. If dirty or oxidized – clean the pads.
2. If damaged – replace the battery.
Troubleshooting Guide (mech)
Check:
Inspect the battery contact pins.
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 Main PBA.
Check:
Inspect the on/off key (a) and the on/off switch (b).
Action:
Refer to section 1.2.4 ‘On/Off Key’.
1277-1356 Rev 2
Sony Mobile Communications AB –
4(45)
Company Internal
Problem Areas
1.2 Keys
1.2.1 Back/Home/Multi task Keys
Check:
Touch the Screen to check the Back Key, Home Key and
Multi task Keys
Action:
Refer to section 1.3 ‘Touch Screen’.
1.2.2 Camera Key
Check:
Inspect the camera key (a) on the Battery Cover Assy and
the camera key switch (b).
Action:
1. If the camera key (a) or the camera key switch (b) is dirty
or clogged – clean it.
Troubleshooting Guide (mech)
2. If the camera key (a) is damaged – replace the Camera
Key.
3. If the camera key switch (b) is damaged – replace the
Link FPC and Link FPC Gasket.
1277-1356 Rev 2
Sony Mobile Communications AB –
5(45)
Company Internal
Problem Areas: Keys
Check:
Inspect the BtB connector of the Link FPC to the Main PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. If the BtB connector or the camera key switch of the Link
FPC is damaged – replace the Link FPC and Link FPC
Gasket.
4. Replace Main PBA.
Troubleshooting Guide (mech)
1.2.3 Volume Key
Check:
Inspect the volume key (a) on the Battery Cover Assy and
the volume switch (b).
Action:
1. If the volume key (a) or the volume switch (b) is dirty or
clogged – clean it.
2. If the Volume Key (a) is damaged – replace the Volume
Key.
1277-1356 Rev 2
Sony Mobile Communications AB –
6(45)
Company Internal
Problem Areas: Keys
3. If the Volume Key switch (b) is damaged – replace the
Link FPC and Link FPC Gasket.
Check:
Inspect the BtB connector of the Link FPC to the Main PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
Troubleshooting Guide (mech)
3. If the BtB connector or the Volume Key switch of the Link
FPC is damaged – replace the Link FPC and Link FPC
Gasket.
4. Replace Main PBA.
1.2.4 On/Off key
Check:
Inspect the on/off key (a) on the Battery Cover Assy and the
on/off switch (b).
Action:
1. If the on/off key (a) or the on/off switch (b) is dirty or
clogged – clean it.
1277-1356 Rev 2
Sony Mobile Communications AB –
7(45)
Company Internal
Problem Areas: Keys
2. If the On/off Key (a) is damaged – replace the Volume
Key.
3. If the On/off switch (b) is damaged – replace the Link FPC
and Link FPC Gasket.
Troubleshooting Guide (mech)
Check:
Inspect the BtB connector of the Link FPC to the Main PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. If the BtB connector or the On/off Key switch of the Link
FPC is damaged – replace the Link FPC and Link FPC
Gasket.
4. Replace Main PBA.
1277-1356 Rev 2
Sony Mobile Communications AB –
8(45)
Company Internal
Problem Areas
1.3 Touch Screen
1.3.1 Touch Screen malfunction
Check:
Inspect the Touch Screen.
Action:
1. If dirty – clean it.
2. If damage – replace it.
Check:
Inspect the ZIF connector of the Touch Panel to the Display.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
Troubleshooting Guide (mech)
Check:
Inspect the FPC of the Touch Panel.
Action:
If the FPC or the touch screen is damaged – replace the
Touch Panel, Kapton Tape TP connector and Touch Panel
Adhesive.
1277-1356 Rev 2
Sony Mobile Communications AB –
9(45)
Company Internal
Problem Areas: Touch Screen
Check:
Inspect the BtB connector of the Display to the Main PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
Check:
Inspect the FPC of the Display.
Troubleshooting Guide (mech)
Action:
1. If the Display or its FPC is damaged – replace the
Display, Touch Panel, Touch Panel Adhesive and Kapton
Tape TP connector.
2. Replace Main PBA.
1277-1356 Rev 2
Sony Mobile Communications AB –
10(45)
Company Internal
Problem Areas
1.4 Display
1.4.1 Graphics & Illumination
Check:
Inspect whether the phone vibrates after the on/off key has
been pressed.
Action:
If the activation described above is not detected, refer to
section 1.1 ‘Power’.
Check:
Inspect the BtB connector of the Display to the Main PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
Troubleshooting Guide (mech)
Check:
Inspect the Display and its FPC.
Action:
1. If dirty – clean it.
2. If the Display or its FPC is damaged – replace the
Display, Touch Panel, Touch Panel Adhesive and Kapton
Tape TP connector.
3. Replace Main PBA.
1277-1356 Rev 2
Sony Mobile Communications AB –
11(45)
Company Internal
Problem Areas
1.5 LED/Illumination
1.5.1 LED/Illumination
Check:
Inspect the external window area of the LED on the Touch
Panel.
Action:
1. If dirty – clean it.
Troubleshooting Guide (mech)
2. If the external window area is damaged – replace the
Touch Panel, Touch Panel Adhesive and Kapton Tape TP
connector.
Check:
Inspect the Light Bar Gasket (a) and Reflective Sheet (b)
and Diffusion Film (c) on the Front Cover Assy.
Action:
1. If misplace – reassemble them.
2. If damage – replace them.
Check:
Inspect the LED (a) on the ANT Board and the backside of
the RGB window (b).
Action:
1. If dirty – clean them.
2. If damage - replace the ANT Board.
1277-1356 Rev 2
Sony Mobile Communications AB –
12(45)
Company Internal
Problem Areas: LED/Illumination
Check:
Inspect the ZIF connector of the ANT Board to the Link FPC.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
Check:
Inspect the BtB connector of the Link FPC to the Main PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
Troubleshooting Guide (mech)
3. If the connectors or the FPC part of Link FPC is damaged
– replace the Link FPC and Link FPC Gasket.
4. Replace Main PBA.
1277-1356 Rev 2
Sony Mobile Communications AB –
13(45)
Company Internal
Problem Areas
1.6 Speaker
1.6.1 Loudspeaker
Check:
Inspect the Loudspeaker’s external port on the Battery
Cover Assy.
Action:
1. If clogged – clean it.
Troubleshooting Guide (mech)
2. If damaged – replace the Speaker Mesh.
Check:
Inspect the Speaker Mesh on Rear Cover.
Action:
1. If dirty – clean it.
2. If damaged – replace it
Check:
Inspect the Speaker Sponge.
Action:
1. If dirty – clean it.
2. If damaged – replace it
1277-1356 Rev 2
Sony Mobile Communications AB –
14(45)
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