Trouble Shooting Guide, Electrical
Trouble Shooting Guide, Electrical
Applicable for K330
Contents
1 General...............................................................................................................2
2 Repair Actions for Manual Test Failures......................................................... 3
2.1 Power Problem.........................................................................................3
2.2 Display Problem.......................................................................................3
2.3 Charging/Capacity Problem.....................................................................3
2.4 Camera Problem......................................................................................3
2.5 Illumination Problem.................................................................................3
2.6 Display Illumination Problem....................................................................3
2.7 Audio Problem..........................................................................................3
2.8 Radio Problem...........................................................................................3
2.9 Network/Signal Problem............................................................................ 3
2.10 SIM Problem..............................................................................................3
2.11 Data communication Problem...................................................................3
2.11 SW Upgrade Problem ...............................................................................3
3 Revision History................................................................................................4
1219-0638 Rev 2
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Electrical
1 General
The purpose of this document is to indicate the electrical level repair actions associated with
the different failure symptoms.
For symptoms that have multiple repair actions, the repair actions are listed in order of their
probability of creating a successful repair. The first action has the highest probability, and
subsequent actions have lower probabilities. The intention is for the repair technician to
implement the first repair action and then retest the phone. If the phone continues to fail the
same test, then the technician should continue to the second repair action. If the phone
continues to fail the same test after all of the repair actions are exhausted, then the phone will
be considered not reparable at this level.
This document should be used only after the actions from the Mechanical Trouble Shooting
Guide have been exhausted for the specific symptom.
Voltage, current, and resistance information is provided for some symptoms to enable faster
repairs. Perform current measurements using a dummy battery and power supply with digital
current display. The phone should be fully assembled. Perform voltage and resistance
measurements with a multimeter. Purchasing this equipment and performing these
measurements is optional but recommended.
Perform current measurements using a
dummy battery and power supply with digital
current display.
The phone should be fully assembled.
Perform voltage measurements with a
multimeter.
Perform resistance measurements with a
multimeter.
1219-0638 Rev 2
Company Internal© Sony Ericsson Mobile Communications AB
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Trouble Shooting Guide, Electrical
2 Repair Actions for Manual Test Failures
Failure Failure Symptom Action - Replacement
2.1 Power Problem
2.2 Display Problem
2.3 Charging/Capacity Problem
2.4 Camera Problem
2.5 Illumination Problem
2.6 Display Illumination Problem
2.7 Audio Problem
2.8 Radio Problem
No Power On
No Display
Can’t charge
Can’t charge with USB
Can’t take picture
No keypad back light
No LCM backlight
No Audio
No Ring Tone
No Radio
• Replace J6
• Replace D101
• Replace J1
• Replace D12
• Replace U8
• Replace U9
• Replace Z1002
• Replace J7
• Replace U100
• Replace J4
• Replace U601
• Replace U606
2.9 Network/Signal
Problem
2.10 SIM Problem
2.11 Data
communication
Problem
2.11 SW Upgrade
Problem
No network or poor network
Display “Insert SIM “
Can’t link with computer
Can’t upgrade SW with Emma
• Replace Z901
• Replace Z902
• Replace J2
• Replace U706
• Replace D71
Note: Check polarity!
1219-0638 Rev 2
Company Internal© Sony Ericsson Mobile Communications AB
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Trouble Shooting Guide, Electrical
3 Revision History
Rev. Date Changes / Comments
1 2008-09-25 1st release
2 2008-10-10 Added “2.11 SW Upgrade problem”
Added action “Can’t charge” symptom
Added “Can’t Charge USB” symptom
1219-0638 Rev 2
Company Internal© Sony Ericsson Mobile Communications AB
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