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

Trouble Shooting Guide Repair Instruction Electrical/Trouble Shooting Guide, Electrical/
1257-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
11(15)
Troubleshooting Flow
1.9 Camera
Symptom:
Replace:
Main Camera problems
X7302, if damaged vision check all pins
L1002, 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
12(15)
Troubleshooting Flow
1.10 Data Communication
Symptom:
Replace:
No communication via the USB Connector, charging via USB connector is working
X2200, if damaged vision check pin 2, 3 and 4
N2200, if X2200 pin 2,3 or 4 are short circuit to GND
Z2200 , if more than 4 between pin 1-2 and more than 4 between pin 3-4
Symptom:
Replace:
No Bluetooth and WLAN connection
L8100 , if more than 2 
N8102
Symptom:
Replace:
Bad Bluetooth and WLAN connection
X8420 or X8421, if damaged
X8401, if more than 1 between term A and C
Z8001
Symptom:
Replace
No Bluetooth and / or WLAN connection
N8100
N8101
Symptom:
Replace:
No GPS connection
X8422 or X8423, if damaged
Z8401 or Z8403C
N8401
N2800

Trouble Shooting Guide Repair Instruction Electrical/Trouble Shooting Guide, Electrical/
1257-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
13(15)
Troubleshooting Flow
1.11 Memory Stick / Card
Symptom:
Replace:
Memory stick / Card (micro SD) not detected
X4101 , if damaged vision check pin all pins
V4100

Trouble Shooting Guide Repair Instruction Electrical/Trouble Shooting Guide, Electrical/
1257-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
14(15)
Troubleshooting Flow
1.12 Network & Signal
Symptom:
Action:
Phone fails to lock on to network during radiated (wireless) Go/ No Go test
Use RF probe to perform conducted Go / No Go test
Symptom:
Check:
Replace:
Action:
Phone passes conducted (RF cable) Go / No Go test but fails radiated (wireless) Go / No
Go test
X2801for damage and replace, if more than 1 between A and C term
Rear Cover Assembly
Rerun the phone through radiated (wireless) Go / No Go testing
Symptom:
Action:
Phone fails conducted (RF probe) Go / No Go test
Run the calibration routine
Symptom:
Action:
Fails conducted (RF probe) Go/No Go test, but passes calibration
Rerun the phone through Go/No Go testing
Symptom:
Check:
Replace:
Fails any part of the calibration routine
X2801 for damage and replace, if more than 1 between RF probe and C term or
A and C term is short circuit then the probe is inserted.
N2803C or N2800, if GSM Low band Rx fault.
N2803C,N2800 or Z2800C, if GSM High Band Rx fault
N2803C or N2800, if WCDMA Rx fault
V8101, N2801C, N2803C or N2800, if GSM Tx fault
N2900 , N2803C or N2800 ,if WCDMA Tx band 5 or 8
N2903 , N2803C or N2800 ,if WCDMA Tx band 1 fault
N2902 , N2803C or N2800 ,if WCDMA Tx band 2 fault

Trouble Shooting Guide Repair Instruction Electrical/Trouble Shooting Guide, Electrical/
1257-5712 Rev 1
Sony Ericsson Mobile Communications AB –Company Internal
15(15)
2 Revision History
Rev.
Date
Changes / Comments
PA1
2011-09-26
Released