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LG 50PZ570 Service Manual page 48

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Repair Process-Reference data
Input
PDP TV
Block
Make sure you can't hear any audio
Y
Check speaker for damage.
Y
Check Connector
P1300
Y
Check IC700 Power
17V(L1306), 3.3V(L1307)
Y
Check IC1300 Status
PDN(#23) / Reset(#31) is High?
Y
Check SCL,SDA
R1314, R1316
Y
Check BCM I2S Output
R1305, 1306, 1307, 1308
Y
Replace AMP(IC1300)
All Input Audio Problem
N
Replace the Speaker
N
Replace P1300
N
Check 17V (P500 #1,2),
3.3V (IC505)
N
Check
Reset (R1309) / PDN (R1311)
:They must be High (3.3V)
N
Delete R1314,1416 and check
IIC Line(SCL/SDA3)
N
Replace BCM(IC101).
Making
Revision
A2
2010. 12 . 24
A2-1

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