LG 42PQ30 Training Manual page 84

Control PWB Signal Block
Control PWB Signal Block
The Control Board supplies Video Signals to the TCP (Tape Carrier Package) ICs.
If there is a bar defect on the screen, it could be a Control Board problem.
Control Board to X Board
Address Signal Flow
This Picture shows Signal Flow Distribution to help determine the
failure depending on where the it shows on the screen.
EEPROM
MCM
IC201
DRAM
To X-Drive Boards
Basic Diagram of Control Board
IC201
MCM
Resistor Array
16 line
2 Buffer
Outputs
per TCP
128 Lines per Buffer
256 Lines output Total
Preliminary Information 42PQ30
84
CONTROL PWB
X-DRIVE PWB
PANEL