LGE Internal Use Only
3. TROUBLE SHOOTING
Checking Flow
Image
3.5.2.1
Checking WCDMA PAM DC Power & Control Circuit
3.5 WCDMA RF PART
Main
Top
TP5
TP4
TP3
U3201
TP1(3.4V~4.3V)
TP2(3.4V~4.3V)
Check TP1
Re-solder or Change
Check TP2
YES
YES
NO
NO
Re-solder or Change
Check TP3
Re-solder or Change
YES
Check TP4/TP5
NO
START
WCDMA PAM Power and
Circuit is OK
Re-solder or Change
NO
YES
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2017 LG Electronics. Inc. All right rese
rved. Only training and service purposes
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