Sony Ericsson WT19a User manual

1251-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
1(15)
Troubleshooting Guide
- electrical -
WT19a, WT19i
Sony Ericsson Live with Walkman

Trouble Shooting Guide Repair Instruction Electrical/Trouble Shooting Guide, Electrical/
1257-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
2(15)
CONTENTS
1Troubleshooting Flow......................................................................3
1.1 Display.....................................................................................................3
1.2 Illumination .............................................................................................4
1.3 Keys & Sensors......................................................................................5
1.4 Alert.........................................................................................................6
1.5 Audio.......................................................................................................7
1.6 On/Off......................................................................................................8
1.7 Charging & Capacity ..............................................................................9
1.8 SIM.........................................................................................................10
1.9 Camera..................................................................................................11
1.10Data Communication............................................................................12
1.11Memory Stick / Card.............................................................................13
1.12Network & Signal..................................................................................14
2Revision History.............................................................................15
For general information about mechanical repair related issues, refer to
1220-1336: Generic Repair Manual –electrical

Trouble Shooting Guide Repair Instruction Electrical/Trouble Shooting Guide, Electrical/
1257-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
3(15)
1 Troubleshooting Flow
1.1 Display
Symptom:
Replace:
Display problems
X7100, if damaged vision check all pins
Z7800 or Z7801

Trouble Shooting Guide Repair Instruction Electrical/Trouble Shooting Guide, Electrical/
1257-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
4(15)
Troubleshooting Flow
1.2 Illumination
Symptom:
Replace:
No Display illumination
X7100, if damaged vision check pin 2, 3 and 5
L7600 or L7610 , if more than 1 
C7603 , if short circuit
V7601
N7600
Symptom:
Replace:
No Key Back Light
X7600, if damaged vision check pin 14-16
N7600
Symptom:
Replace:
No Right Top Light
V7602
N7600
Symptom:
Replace:
No Left Top Light
V7603
N7600
Symptom:
Replace:
No R G B MMI LED s
N7806/V1003
Symptom:
Replace:
No Flash LED
L7801,if more than 1 

Trouble Shooting Guide Repair Instruction Electrical/Trouble Shooting Guide, Electrical/
1257-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
5(15)
Troubleshooting Flow
1.3 Keys & Sensors
Symptom:
Replace:
On / Off key problems
S52
Symptom:
Replace:
Back Key, Menu Key and Display Touch Sensor problems
X7600, if damaged vision check pin 1-13
N5300
Symptom:
Replace:
Volume Up key problems
S110
Symptom:
Replace:
Volume Down key problems
S111
Symptom:
Replace:
Camera key problems
S112
Symptom:
Replace:
Walkman key problems
S113
Symptom:
Replace:
Proximity sensor problems
N7606/V1001 or N7606/V1002
N7606/N1001
Symptom:
Replace:
Ambient Light Sensor problems
N7806/N1
N7600
Symptom:
Replace:
Compass problems
N5401

Trouble Shooting Guide Repair Instruction Electrical/Trouble Shooting Guide, Electrical/
1257-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
6(15)
Troubleshooting Flow
1.4 Alert
Symptom:
Replace:
Vibrator problems
B5100

Trouble Shooting Guide Repair Instruction Electrical/Trouble Shooting Guide, Electrical/
1257-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
7(15)
Troubleshooting Flow
1.5 Audio
Symptom:
Replace:
No audio
L1001 ,if more than 1 
Symptom:
Replace:
No Primary Microphone
L3503 or L3504, if more than 2 
B3501
N2800
Symptom:
Replace:
No or bad Earphone / Ear speaker
L3507 or L3508 ,if more than 1 
V3511 , if X3506 or X3507 is short circuit to GND
N2800
Symptom:
Replace:
No or bad Right Loudspeaker
L3505, L3506, L3511 or L3512, if more than 2 
V3502 , if X3502 or X3503 is short circuit to GND
N3502
N2800
Symptom:
Replace
No or bad Left Loudspeaker
L3501, L3502, L3509 or L3510, if more than 2 
V3500 , if X3500 or X3504 is short circuit to GND
N3501
N2800
Symptom:
Replace:
No or bad Hands-free (PHF) Microphone
L3100 or L3604 , if more than 2 
N3600
N2800
Symptom:
Replace:
No or bad Hands-free (PHF) Aux Earphone / Ear speaker
L3100 , L3600 , L3601 , L3602or L3603 if more than 2 
N3600
N2800
Symptom:
Replace:
No Hands-free (PHF) Microphone –Phone not recognizes PHF set
L3100 , if more than 2 
N3600
Symptom:
Replace:
No or bad FM Radio
V3100
N8100

Trouble Shooting Guide Repair Instruction Electrical/Trouble Shooting Guide, Electrical/
1257-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
8(15)
Troubleshooting Flow
1.6 On/Off
Symptom:
Replace:
Current draw greater than 300 mA
V1700 ,if getting hot
N2801C ,if getting hot
N2903 ,N2900 or N2902 , if getting hot
Symptom:
Replace:
Current draw when powered off
C1312C
N2801C, if getting hot
N2903 ,N2900 or N2902 , if getting hot
Symptom:
Replace:
Using no current when On/Off key is pressed and will not start.
S52
Symptom:
Replace:
Draws current when On/Off key is pressed, returns to zero
L1000, L1003,L1004 or L2400C , if more than 1 
N2401C
Symptom:
Replace:
Others
X1300 , if damaged vision check all pins

Trouble Shooting Guide Repair Instruction Electrical/Trouble Shooting Guide, Electrical/
1257-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
9(15)
Troubleshooting Flow
1.7 Charging & Capacity
Symptom:
Replace:
No or bad Charging from USB
X2200, if damaged vision check pin 1 and 5
X1300 , if damaged vision check all pins
C1317 or C2200 , if X2200 pin 1 is short circuit to GND
L1300C, if more than 1 
N1303C
Symptom:
Replace:
Wrong Battery indicator
N1302
Symptom:
Replace:
Wrong Battery temperature
V1701 , if X1300 pin 2 is short circuit to GND
Symptom:
Replace:
No trickle Charging
N1602

Trouble Shooting Guide Repair Instruction Electrical/Trouble Shooting Guide, Electrical/
1257-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
10(15)
Troubleshooting Flow
1.8 SIM
Symptom:
Replace:
SIM not detected
X4000 , if damaged vision check all pins
V4000 or V4001, if short circuit to GND