Sony Ericsson S312 User manual

1222-7451 Rev 2
Troubleshooting Guide
- electrical -
S312
©Sony Ericsson Mobile Communications AB – Company Internal

Troubleshooting Guide (elect)
1222-7451 Rev 2
CONTENTS
1Troubleshooting Flow....................................................................3
1.1 Display................................................................................................... 3
1.2 Illumination ........................................................................................... 4
1.3 Keys & Sensors .................................................................................... 5
1.4 Alert & RTC ...........................................................................................6
1.5 Audio ..................................................................................................... 7
1.6 On/Off .................................................................................................... 8
1.7 Charging & Capacity ............................................................................9
1.8 Data Communication..........................................................................10
1.9 Network & Signal................................................................................11
2Revision History...........................................................................12
©Sony Ericsson Mobile Communications AB – Company Internal 2(2)

Troubleshooting Guide (elect)
1222-7451 Rev 2
1 Troubleshooting Flow
1.1 Display
Symptom:
Replace: Display problem
J301, if damaged
©Sony Ericsson Mobile Communications AB – Company Internal 3(3)

Troubleshooting Guide (elect)
1222-7451 Rev 2
Troubleshooting Flow
1.2 Illumination
Symptom:
Replace: No Display illumination
J301, if damaged
D302 or D301, if short circuit
Symptom:
Replace: No Navigation keys illumination
J601, if damaged
D605, if short circuit
Symptom:
Replace: No TORCH LIGHT
LED301, if damaged
D304 or D303,if short circuit
©Sony Ericsson Mobile Communications AB – Company Internal 4(4)

Troubleshooting Guide (elect)
1222-7451 Rev 2
Troubleshooting Flow
1.3 Keys
Symptom:
Replace: Keyboard problems
J601, if damaged
D607, D608, D610, D611, D612, D613, D614, D615, D618, if short circuit
©Sony Ericsson Mobile Communications AB – Company Internal 5(5)