Preheat Run Condition; Cut Off Adjustment - Hitachi C47-WD8000 Service Manual

SERVICE ADJUSTMENTS

1.3 PREHEAT RUN CONDITION

* Preset each VR as in the following figure before PREHEAT RUN.
(1) SCREEN VR ON FOCUS PACK.
<PRESET> Turn counterclockwise to the end.
(2) STATIC FOCUS VR ON FOCUS PACK.
<PRESET>Turn clockwise to the end.

2.1 CUT OFF ADJUSTMENT

Adjustment preparation
(1) Preheat run should be finished.
(2) Confirm item No.54(R cut off), 55(G cut off) and 56 (B cut off) are set to 127 in service menu.
(3) Confirm item No.52(R DRV) and No. 53(G DRV) are set to 63 in service menu.
Adjustment procedure
(1) Select item No. 20 in service menu by using the remote controller.
Press [►] key to enter CUT OFF adjustment mode.
(2) Screen VR (R, G and B) should be turned clockwise gradually and set the condition that the each horizontal
line is just beginning to appear.
(3) Press [◄] key to return normal mode.
Screen VR
Focus VR
28
Static Focus VR
Screen VR
R G B
R G B
<Focus Pack>