LG 50PS80 Training Manual page 89

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 problem shows on the screen.
DRAM
To X-Drive
To X-Drive
Center Board
Left Board
EEPROM
MCM
IC1
To X-Drive
Right Board
Basic Diagram of Control Board
IC1
MCM
Resistor Array
16 bit
2 Buffers
per TCP
128 Lines per Buffer
256 Lines output Total
August 2009 Plasma 50PS80
89
CONTROL PWB
X-DRIVE PWB
TCP
PANEL
23 Total TCPs
5888 Line Outputs
RGB per/Pixel
5888 / 3 = 1962
1920 actual
(42 pin outputs not used)