Sony Xperia Z1 User manual

1279-7185 Rev 1
 Sony Mobile Communications AB – Company Internal
Troubleshooting Guide
- mechanical -
Xperia
TM
Z1
LT39t

Troubleshooting Guide (mech)
1279-7185 Rev 1
 Sony Mobile Communications AB –
Company Internal
2(68)
CONTENTS
1 Problem 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................................................................................................13
1.4.1 Graphics & Illumination ............................................................................13
1.5 LED/Illumination.................................................................................14
1.5.1 LED/Illumination........................................................................................14
1.6 Speaker...............................................................................................15
1.6.1 Loudspeaker..............................................................................................15
1.7 Earphone ............................................................................................17
1.7.1 Ear Speaker................................................................................................17
1.8 Microphone.........................................................................................18
1.8.1 Primary Microphone..................................................................................18
1.8.2 Secondary Microphone.............................................................................19
1.9 Vibrator...............................................................................................22
1.9.1 Vibrator not generating alerts ..................................................................22
1.10 Camera................................................................................................24
1.10.1 Main Camera..............................................................................................24
1.10.2 Video Call Camera defects........................................................................25
1.11 Flash LED ...........................................................................................26
1.11.1 Flash LED not flashing..............................................................................26
1.12 Bluetooth and WLAN .........................................................................28
1.12.1 Bluetooth or WLAN connection failure....................................................28
1.13 NFC .....................................................................................................29
1.13.1 NFC malfunctions......................................................................................29
1.14 GPS .....................................................................................................30
1.14.1 GPS malfunctions......................................................................................30
1.15 Compass.............................................................................................31
1.15.1 Compass fails............................................................................................31
1.16 Accelerometer....................................................................................32
1.16.1 Accelerometer test fails............................................................................32
1.17 Gyroscope ..........................................................................................33
1.17.1 Gyroscope test fails ..................................................................................33
1.18 Ambient Light Sensor........................................................................34
1.18.1 Light Sensor malfunctions .......................................................................34

Troubleshooting Guide (mech)
1279-7185 Rev 1
 Sony Mobile Communications AB –
Company Internal
3(68)
1.19 Proximity Switch................................................................................36
1.19.1 Proximity switch malfunctions.................................................................36
1.20 Pressure Sensor.................................................................................38
1.20.1 Pressure Sensor test fails.........................................................................38
1.21 Water Resistance...............................................................................39
1.21.1 Water Resistance fails...............................................................................39
1.22 Real Time Clock .................................................................................45
1.22.1 Real time clock test fails...........................................................................45
1.23 Total call time.....................................................................................46
1.23.1 Total call time fails ....................................................................................46
1.24 External...............................................................................................47
1.24.1 Memory Card not detected .......................................................................47
1.25 Security...............................................................................................48
1.25.1 Security fails..............................................................................................48
1.26 FM Radio.............................................................................................49
1.26.1 No/Poor FM Radio reception ....................................................................49
1.27 Battery Health test .............................................................................50
1.27.1 Battery Health test fails.............................................................................50
1.28 Flip Slider Counter.............................................................................51
1.28.1 Flip Slider Counter fails ............................................................................51
1.29 Verify Certificates...............................................................................52
1.29.1 Verify Certificates fails..............................................................................52
1.30 IrDA Test.............................................................................................53
1.30.1 IrDA test fails .............................................................................................53
1.31 TV-Out Test.........................................................................................54
1.31.1 TV-Out test fails.........................................................................................54
1.32 Network & Signal................................................................................55
1.32.1 No/Poor signal...........................................................................................55
1.33 SIM ......................................................................................................62
1.33.1 SIM not detected........................................................................................62
1.33.2 Incorrect UIM or SIM indicated.................................................................62
1.34 Charging.............................................................................................63
1.34.1 Battery will not charge by USB connector ..............................................63
1.34.2 Battery will not charge by charge pad.....................................................63
1.35 HandsFree by Wire.............................................................................66
1.35.1 Connection to portable Handsfree fails...................................................66
1.36 Data Communication .........................................................................67
1.36.1 Data transfer via System Connector fails................................................67
2 Revision History...........................................................................68

Troubleshooting Guide (mech)
1279-7185 Rev 1
 Sony Mobile Communications AB –
Company Internal
4(68)
Always firstly disconnect the Battery FPC BtB connector to cut off power supply when the Sub
Antenna Assy is disassembled.
Always finally connect the Battery FPC BtB connector before the Sub Antenna Assy is
reassembled.

Troubleshooting Guide (mech)
1279-7185 Rev 1
 Sony Mobile Communications AB –
Company Internal
5(68)
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 1279-7188 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)
1279-7185 Rev 1
 Sony Mobile Communications AB –
Company Internal
6(68)
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)
1279-7185 Rev 1
 Sony Mobile Communications AB –
Company Internal
7(68)
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 Assy Relay/Side Key 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 Assy Relay/Side Key is damaged –
replace the FPC Assy Relay/Side Key.
4. Replace Main PBA.

Troubleshooting Guide (mech)
1279-7185 Rev 1
 Sony Mobile Communications AB –
Company Internal
8(68)
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
Display Frame Assy.
3. If the volume key switch is damaged – replace the FPC
Assy Relay/Side Key.
1.2.3 On/Off Key
Check:
Inspect the external area of the Power Key.
Action:
If dirty – clean it.

Troubleshooting Guide (mech)
1279-7185 Rev 1
 Sony Mobile Communications AB –
Company Internal
9(68)
Problem Areas: Keys
Check:
Inspect the BtB connector of FPC Assy Relay/Side Key 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 Assy Relay/Side Key is damaged –
replace the FPC Assy Relay/Side Key.
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 rubber of the power key is damaged – replace the
Display Frame Assy.

Troubleshooting Guide (mech)
1279-7185 Rev 1
 Sony Mobile Communications AB –
Company Internal
10(68)
Problem Areas: Keys
3. If the power key switch is damaged – replace the FPC
Assy Relay/Side Key.
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 Assy Relay/Side Key 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 Assy Relay/Side Key is damaged –
replace the FPC Assy Relay/Side Key.
4. Replace Main PBA.