Sony Ericsson S312 Manuale utente

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)

Troubleshooting Guide (elect)

1222-7451 Rev 2

Troubleshooting Flow

1.4 Alert & RTC

Symptom:

Replace: Vibrator problems

D508, if short circuit

Symptom:

Replace: The clock gain or lose time

X102

©Sony Ericsson Mobile Communications AB – Company Internal 6(6)

Troubleshooting Guide (elect)

1222-7451 Rev 2

Troubleshooting Flow

1.5 Audio

Symptom:

Replace: No Microphone

J501, if damaged

D505, if short circuit

Symptom:

Replace: No Earphone

D506, D507, if short circuit

Symptom:

Replace: No or bad Loudspeaker

D503, D504, if short circuit

U501, if damaged

Symptom:

Replace: Can not detect Hands-free (PHF)

D709, if short circuit

Symptom:

Replace: No FM Radio

U803, if damaged

D702, if short circuit

©Sony Ericsson Mobile Communications AB – Company Internal 7(7)

Troubleshooting Guide (elect)

1222-7451 Rev 2

Troubleshooting Flow

1.6 On/Off

Symptom:

Replace: Using no current when On/Off key is pressed and will not start.

J401, if damaged

J601

D601, if short circuit

U904, if damaged

Symptom:

Replace: Current draw greater than 300 mA

D403, if short circuit

©Sony Ericsson Mobile Communications AB – Company Internal 8(8)

Troubleshooting Guide (elect)

1222-7451 Rev 2

Troubleshooting Flow

1.7 Charging & Capacity

Symptom:

Replace: No Charging from power outlet

J401, if damaged

D403 or D708, if short circuit

D402 or D405,

U401, if damaged

Symptom:

Replace: No Charging from computer via USB

J401, if damaged

D701, if short circuit

D403 or D701, if short circuit

D401 or D405,

U402, if damaged

Symptom:

Replace: Capacity problem

D404, if short circuit

©Sony Ericsson Mobile Communications AB – Company Internal 9(9)

Troubleshooting Guide (elect)

1222-7451 Rev 2

Troubleshooting Flow

1.8 Data Communication

Symptom:

Replace: No communication via the System Connector

D706, D707 or D701, if short circuit

U703, if damaged

©Sony Ericsson Mobile Communications AB – Company Internal 10(10)

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