Sony Ericsson S312 Schematics 2

Troubleshooting Guide

- electrical -

S312

1222-7451 Rev 2

Troubleshooting Guide (elect)

CONTENTS

1 Troubleshooting 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

2 Revision History ........................................................................... 12

1222-7451 Rev 2

2(2)

1 Troubleshooting Flow

Symptom: Replace:

Display problem J301, if damaged

Troubleshooting Guide (elect)

1222-7451 Rev 2

3(3)

Troubleshooting Flow

Symptom: Replace:

No Display illumination

J301, if damaged D302 or D301, if short circuit

No Navigation keys illumination J601, if damaged D605, if short circuit

No TORCH LIGHT

LED301, if damaged D304 or D303, if short circuit

Troubleshooting Guide (elect)

1222-7451 Rev 2

4(4)