Read LG 42PG3HD-UA (CHASSIS:PU84A) Service Manual online
- 15 -
Module Control Trouble Shooting
Check the PDP Module Control
Board
Replace Module Control Board
N
Y
Check the IIC To II C Test
- Debug Menu IIC Test
Remove R330, R334
Check each IC sharing
IIC channel
N
Check P302 SCL,SDA line SCL,SDA
line R330, R334
Check Signal
N
Y
SCL (continue)
SDA (continue)
ACK
By Slave
9
1
D0
D7
9
ACK
By Slave
Command Data
for Addr
Stop
By Master
D6
SCL
8
SDA
0
0
1
1
1
A7
W
Start
By
Master
Chip ID Address Byte
(0x1C)
ACK
By Slave
0
1
9
1
A6
A1
A0
Command Address
Addr=A[7:0]
0
Write
only
Master : Image Board
Slave : PDP Module
Slave : PDP Module
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