Sony Xperia TX LT29i Working Instructions page 84

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 ...................................................................................................... 6
1.2.1 Back, Home and Multitask Keys ................................................................. 6
1.2.2 Camera Key .................................................................................................. 6
1.2.3 Volume Key .................................................................................................. 7
1.2.4 On/Off Key .................................................................................................... 8
1.3 Touch Screen ..................................................................................... 10
1.3.1 Touch Screen malfunction ........................................................................ 10
1.4 Display ................................................................................................ 11
1.4.1 Graphics & Illumination ............................................................................ 11
1.5 LED/Illumination ................................................................................. 12
1.5.1 LED/Illumination ........................................................................................ 12
1.5.2 XPERIA logo Illumination .......................................................................... 13
1.6 Speaker ............................................................................................... 15
1.6.1 Loudspeaker .............................................................................................. 15
1.7 Earphone ............................................................................................ 18
1.7.1 Earphone .................................................................................................... 18
1.8 Microphone ......................................................................................... 20
1.8.1 Microphone ................................................................................................ 20
1.8.2 Secondary Microphone ............................................................................. 22
1.9 Vibrator ............................................................................................... 24
1.9.1 Vibrator not generating alerts .................................................................. 24
1.10 Camera ................................................................................................ 25
1.10.1 Camera defects .......................................................................................... 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 ..................................................................................................... 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
1266-5087 Rev 1

Sony Mobile Communications AB - Company Internal
Troubleshooting Guide (mech)
2(57)