Read LG 42PT350B-SA (CHASSIS:PB11K) Service Manual online
Module Control Trouble Shooting
“TILT” on Adjust Remocon
: PDP internal pattern displays?
PDP Module Power is OK?
N
PDP Module is OK.
Check SCL,SDA line
Check Signal
output
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
< Sample Signal >
SCL
SDA
ACK
signal Check
Low :
OK
High :
Error
Replace Control
Board
N
Check SMPS & cable
N
Y
Replace PDP Module
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