Sony Ericsson Txt pro User manual

1246-9261 Rev 1
©Sony Ericsson Mobile Communications AB – Company Internal
Troubleshooting Guide
- electrical -
Txt pro,CK15i,CK15a

Troubleshooting Guide (elect)
1246-9261 Rev 1
©Sony Ericsson Mobile Communications AB – Company Internal 2(16)
CONTENTS
1Troubleshooting Flow....................................................................3
1.1Display...................................................................................................3
1.2Touch..................................................................................................... 4
1.3Illumination ...........................................................................................5
1.4Keys & Sensors .................................................................................... 6
1.5Alert & RTC ...........................................................................................7
1.6Audio .....................................................................................................8
1.7On/Off ....................................................................................................9
1.8Charging & Capacity ..........................................................................10
1.9SIM .......................................................................................................11
1.10Camera ................................................................................................12
1.11Data Communication..........................................................................13
1.12Memory Stick ...................................................................................... 14
1.13Network & Signal................................................................................15
2Revision History...........................................................................16

Troubleshooting Guide (elect)
1246-9261 Rev 1
©Sony Ericsson Mobile Communications AB – Company Internal 3(16)
1 Troubleshooting Flow
1.1 Display
Symptom:
Replace: Display problem
J502, if damaged, visual check pin 1,3,5,7,9,11,13,15,17,19,21,23,25
U506, U507 or U508, if damaged

Troubleshooting Guide (elect)
1246-9261 Rev 1
©Sony Ericsson Mobile Communications AB – Company Internal 4(16)
Troubleshooting Flow
1.2 Touch
Symptom:
Replace: Touch Screen problems
J502, if damaged vision check pin 24,26,30,32

Troubleshooting Guide (elect)
1246-9261 Rev 1
©Sony Ericsson Mobile Communications AB – Company Internal 5(16)
Troubleshooting Flow
1.3 Illumination
Symptom:
Replace: No Display illumination
J502, if damaged, visual check pin 40,42,44,46,48,50
Symptom:
Replace: No Main key LED
D705, if short circuit
Q701, if damaged
D701, D702, D703, D704 if damaged
Symptom:
Replace: No Pre-charge Charge LED
J502,if damaged vision check pin 16
Q501, if damaged