Daewoo DT-4220NH Service Manual page 21

Description of A/V(MAIN and SUB PCB) and POWER
4-2-4. PC (Personal Computer)signal
PC signal is switched out by IC109 and input to IC114 for A/D conversion. Then the signal goes
through IC140 for digital image processing.
- Main IC
A. IC109: Switching IC (Input: Analog RGB, H, V Output: Analog RGB, H, V)
B. IC114: A/D converter (Input: Analog RGB, H, V Output: 24bit digital RGB, H, V)
C. IC140: Image Processor (Input: 24bit digital RGB, H, V Output: 24bit digital RGB, H, V)
- Main TP (Input: Color Bar Pattern)
TP136: Vertical sync (output of IC121)
TP130: Vertical sync (output of IC114)
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