Sony Xperia Z1 User manual

1277-9814 Rev 2

Sony Mobile Communications AB – Company Internal
Troubleshooting Guide
- mechanical -
Xperia Z1TM
C6902, C6903, C6906, LT39h

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
2(63)
CONTENTS
1Problem Areas................................................................................5
1.1 Power....................................................................................................5
1.1.1 Will not power on or will switch off randomly...........................................5
1.2 Keys ......................................................................................................7
1.2.1 Back, Menu, Home and Multitask Keys .....................................................7
1.2.2 Volume Key..................................................................................................7
1.2.3 On/Off Key....................................................................................................8
1.2.4 Camera Key................................................................................................10
1.3 Touch Screen .....................................................................................12
1.3.1 Touch Screen malfunction........................................................................12
1.4 Display................................................................................................14
1.4.1 Graphics & Illumination ............................................................................14
1.5 LED/Illumination.................................................................................16
1.5.1 LED/Illumination........................................................................................16
1.6 Speaker...............................................................................................17
1.6.1 Loudspeaker..............................................................................................17
1.7 Earphone ............................................................................................19
1.7.1 Ear Speaker................................................................................................19
1.8 Microphone.........................................................................................20
1.8.1 Primary Microphone..................................................................................20
1.8.2 Secondary Microphone.............................................................................21
1.9 Vibrator...............................................................................................24
1.9.1 Vibrator not generating alerts ..................................................................24
1.10 Camera................................................................................................25
1.10.1 Main Camera..............................................................................................25
1.10.2 Video Call Camera defects........................................................................26
1.11 Flash LED ...........................................................................................27
1.11.1 Flash LED not flashing..............................................................................27
1.12 Bluetooth and WLAN .........................................................................28
1.12.1 Bluetooth or WLAN connection failure....................................................28
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
1.18.1 Light Sensor malfunctions .......................................................................35

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
3(63)
1.19 Proximity Switch................................................................................37
1.19.1 Proximity switch malfunctions.................................................................37
1.20 Pressure Sensor.................................................................................39
1.20.1 Pressure Sensor test fails.........................................................................39
1.21 Water Resistance ...............................................................................40
1.21.1 Water Resistance fails...............................................................................40
1.22 Real Time Clock .................................................................................44
1.22.1 Real time clock test fails...........................................................................44
1.23 Total call time.....................................................................................45
1.23.1 Total call time fails ....................................................................................45
1.24 External...............................................................................................46
1.24.1 Memory Card not detected .......................................................................46
1.25 Security...............................................................................................47
1.25.1 Security fails..............................................................................................47
1.26 FM Radio.............................................................................................48
1.26.1 No/Poor FM Radio reception ....................................................................48
1.27 Battery Health test .............................................................................49
1.27.1 Battery Health test fails.............................................................................49
1.28 Flip Slider Counter.............................................................................50
1.28.1 Flip Slider Counter fails ............................................................................50
1.29 Verify Certificates...............................................................................51
1.29.1 Verify Certificates fails..............................................................................51
1.30 IrDA Test.............................................................................................52
1.30.1 IrDA test fails .............................................................................................52
1.31 TV-Out Test.........................................................................................53
1.31.1 TV-Out test fails.........................................................................................53
1.32 Network & Signal................................................................................54
1.32.1 No/Poor signal ...........................................................................................54
1.33 SIM ......................................................................................................57
1.33.1 SIM not detected........................................................................................57
1.33.2 Incorrect UIM or SIM indicated.................................................................57
1.34 Charging .............................................................................................58
1.34.1 Battery will not charge by USB connector..............................................58
1.34.2 Battery will not charge by charge pad.....................................................58
1.35 HandsFree by Wire.............................................................................61
1.35.1 Connection to portable Handsfree fails...................................................61
1.36 Data Communication .........................................................................62
1.36.1 Data transfer via System Connector fails................................................62
2Revision History...........................................................................63

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
4(63)
Always firstly disconnect the Battery BtB connector to cut off power supply when the Rear Cover
Assy is disassembled.
Always finally connect the Battery BtB connector before the Rear Cover Assy is reassembled.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
5(63)
1 Problem Areas
1.1 Power
1.1.1 Will not power on or will switch
off randomly
Check:
Check whether the phone vibrates by pressing the on/off
key.
Action:
1. If activation of the vibrator is detected, refer to section 1.4
‘Display’.
2. If NO activation of the Vibrator is detected, check that the
battery is charging when connected to a charger.
Follow 1277-9815 Test Instruction - mechanical chapter
2.3.7 (Charging via USB and Easy Charger), Diagnostic
Battery / Charging status.
Check:
Inspect the on/off key.
Action:
Refer to section 1.2.3 ‘On/Off Key’.
Check:
Inspect the BtB connector of the Battery to Main PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean the both sides of the BtB
connector.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
6(63)
Problem Areas: Power
3. If the BtB connector, the Battery FPC or the Battery is damaged
– replace the Battery.
4. Replace Main PBA.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
7(63)
Problem Areas
1.2 Keys
1.2.1 Back, Menu, Home and
Multitask Keys
Action:
1. Refer to section 1.3 ‘Touch Screen’.
2. Replace Main PBA.
1.2.2 Volume Key
Check:
Inspect the external area of the Key Volume.
Action:
If dirty – clean it.
Check:
Inspect the BtB connector of FPC Assembly Relay to Main
PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. If the FPC of FPC Assembly Relay is damaged – replace
the FPC Assembly Relay.
4. Replace Main PBA.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
8(63)
Problem Areas: Keys
Check:
Inspect the rubber of the Volume Key (a) and Volume Key
switch (b).
Action:
1. If dirty – clean them.
2. If the rubber of the Volume Key is damaged – replace the
Gasket Side Key.
3. If the volume key switch is damaged – replace the FPC
Assembly Relay.
1.2.3 On/Off Key
Check:
Inspect the external area of the Power Key.
Action:
If dirty – clean it.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
9(63)
Problem Areas: Keys
Check:
Inspect the BtB connector of FPC Assembly Relay to Main
PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. If the FPC of FPC Assembly Relay is damaged – replace
the FPC Assembly Relay.
4. Replace Main PBA.
Check:
Inspect the rubber of the Power Key (a) and Power Key
switch (b).
Action:
1. If dirty – clean them.
2. If the Power key is damaged – replace the Power Key.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
10(63)
Problem Areas: Keys
3. If the rubber of the power key is damaged – replace the
Gasket Side Key.
4. If the power key switch is damaged – replace the FPC
Assembly Relay.
1.2.4 Camera Key
Check:
Inspect the external area of the Camera Key.
Action:
If dirty – clean it.
Check:
Inspect the BtB connector of FPC Assembly Relay to Main
PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
11(63)
Problem Areas: Keys
3. If the FPC of FPC Assembly Relay is damaged – replace
the FPC Assembly Relay.
4. Replace Main PBA.
Check:
Inspect the rubber of the Camera Key (a) and Camera Key
switch (b).
Action:
1. If dirty – clean them.
2. If the Camera Key is damaged – replace the Camera Key.
3. If the camera key switch is damaged – replace the FPC
Assembly Relay.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
12(63)
Problem Areas
1.3 Touch Screen
1.3.1 Touch Screen malfunction
Check:
Inspect the touch screen of the Front Cover.
Action:
1. If dirty – clean it.
2. If scratched or damaged – replace the Front Cover.
Check:
Inspect the BtB connector of FPC Assembly Relay to Main
PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. If the BtB connector of FPC Assembly Relay or FPC is
damaged – replace the FPC Assembly Relay.
4. Replace Main PBA.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
13(63)
Problem Areas: Touch Screen
Check:
Inspect the BtB connector of FPC Assembly Relay to Front
Cover and the BtB connector of Front Cover.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. Replace Front Cover.
4. Replace Main PBA.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
14(63)
Problem Areas
1.4 Display
1.4.1 Graphics & Illumination
Check:
Check 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 FPC Assembly Relay to Main
PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. If the BtB connector of FPC Assembly Relay or FPC is
damaged – replace the FPC Assembly Relay.
Check:
Inspect the BtB connector of FPC Assembly Relay to Front
Cover and the BtB and ZIF connector of Front Cover.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
15(63)
Problem Areas: Display
3. If the BtB connector of FPC Assembly Relay or FPC is
damaged – replace the FPC Assembly Relay.
Check:
Replace the Main PBA with a known working one and test the
Display.
Action:
1. If the display is still not working – Replace the Front Cover.
2. Replace Main PBA.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
16(63)
Problem Areas
1.5 LED/Illumination
1.5.1 LED/Illumination
Check:
Inspect external port of LED on the Front Cover.
Action:
1. If dirty – clean it.
Check:
Inspect the BtB connector of FPC Assembly Mic to Main
PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. If the BtB connector of FPC Assembly Mic or FPC is
damaged – replace the FPC Assembly Mic.
4. Replace Main PBA.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
17(63)
Problem Areas
1.6 Speaker
1.6.1 Loudspeaker
Check:
Inspect the Speaker Panel on the Main frame Assy.
Action:
1. If the Speaker Panel is clogged – clean it.
2. If the Speaker Panel is damaged – replace the Speaker
Panel.
Check:
Inspect the contact pads of Loudspeaker and the contact
pads on the FPC Assembly Relay.
Action:
1. If dirty – clean them.
2. If the contact pads of Loudspeaker or the Loudspeaker
are damaged – replace the Loudspeaker.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
18(63)
Problem Areas: Speaker
3. If the contact pads of FPC Assembly Relay are damaged
- replace the FPC Assembly Relay.
Check:
Inspect the BtB connector of FPC Assembly Relay to Main
PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. If the BtB connector of FPC Assembly Relay or FPC is
damaged – replace the FPC Assembly Relay.
4. Replace Main PBA.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
19(63)
Problem Areas
1.7 Earphone
1.7.1 Ear Speaker
Check:
Inspect the external port of Ear Speaker on the Front Cover .
Action:
1. If clogged – clean it.
Check:
Inspect the contact pads of Ear Speaker and the contact
pads on the Main PBA.
Action:
1. If dirty – clean them.
2. If the contact pads of the Ear Speaker or the Ear Speaker
are damaged – replace the Ear Speaker.
3. Replace Main PBA.

Troubleshooting Guide (mech)
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
20(63)
Problem Areas
1.8 Microphone
1.8.1 Primary Microphone
Check:
Inspect the Speaker Panel on the Front Cover .
Action:
1. If clogged – clean it.
2. If the Speaker Panel is damaged – replace the Speaker
Panel.
Check:
Inspect the Cushion 1st Mic on Front Cover .
Action:
1. If dirty – clean them.
2. If the Cushion 1st Mic is damaged – replace Cushion 1st
Mic.