First issue 06 / 03
15
ADJUSTMENTS
PANEL voltage adjustment
Power voltage adjust for TTL panel
The power voltage should be adjusted and checked when changing the panel or power board
1. Setting input source to RGB mode.
2. RGB mode pattern is all white pattern.
3. Follow the panel label voltage to adjust VR (Va=75V, Vs=175V, -Vy=-80, Vset_up=220V)
4. Check voltage between ”check point” and ground.
5. Adjust sequence VA, VS, -Vy and Vset_up
Panel exchange the main power board adjust voltage for each Mode:
Digital Voltage meter the negative(-) to get main power board:(GND) PCB pin.
1. Digital Voltage meter the anode(+) to get main power board: (Va) CN805 or CN806 Va Connect pin.
Adjust VR (Va) = 75 ±0.3Vdc
2. Digital Voltage meter the anode(+) to get main power board: (Vs) CN803 or CN804 Vs Connect pin.
Adjust VR (Vs) = 175 ±0.3Vdc
MAIN POWER BOARD
*NOTE: ADJUSTMENT KNOB
V
Vs ADJ
-Vy ADJ
Vset ADJ
Va ADJ
GND POINT