Service manual

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Description of A/V(MAIN and SUB PCB) and POWER
- Main TP (Input: Color Bar Pattern)
TP116: Horizontal sync (output of IC112)
TP117: Vertical sync (output of IC112)
4-2-6. Video Enhancer and LVDS transmitter (for all inputs)
Outputs of IC140 are inputted to IC149(video signal enhancer) which improves picture quality greatly.
Outputs of IC149 are inputted to IC150 which is a LVDS transmitter. The converted LVDS signal is
transmitted to the digital board.
- Main IC
A. IC149: Video enhancer (Input: 24bit digital RGB, H, V Output: 24bit digital RGB, H, V)
B. IC150: LVDS transmitter (Input: 24bit digital RGB, H, V Output: LVDS signal)
- Main TP (Input: Color Bar Pattern)
TP204: Horizontal sync (output of IC149), refer to TP184
TP205: Vertical sync (output of IC149), refer to TP187