Hitachi 37LD8800TA, Service Manual

Page: 31 / 128

31
55PD8800/37LD8800
Item
Applicable Model All models
Preparation Procedure
(1) Input 576p or 480p adjustment signal
into AV1 terminal.
(1) Receive 576p or 480p adjustment signal on AV1
terminal input.
Indicate Service Adjustment Menu.
(2)
(3)
Select No.652 (RGB amplitude gain adjustment
Main) of Service Adjustment Menu.
Press [OK] key more than 2 seconds to start the
automatic adjustment.
The adjustment completes when the indication
[Auto Mode] at the bottom of the screen
disappears.
[Note] Never adjust without use of the specified signal.
If that were done by mistake, the picture would become abnormal in black level, contrast and color.
In this case, it will be recovered by re-adjustment in the specified way.
Black pattern: Set pedestal level.
Characters must not be inserted
into this signal.
Black White
0.7V
RGB Amplitude Adjustment (Main/Sub)
Select No.653 (RGB amplitude gain adjustment
Sub) of Service Adjustment Menu.
Press [OK] key more than 2 seconds to start the
automatic adjustment.
The adjustment completes when the indication
[Auto Mode] at the bottom of the screen
disappears.
[Note] Never adjust without use of the specified signal.
If that were done by mistake, the picture would become abnormal in black level, contrast and color.
In this case, it will be recovered by re-adjustment in the specified way.
Item
Applicable Model All models
Preparation Procedure
(1) (1)
(2)
Black pattern: Set pedestal level.
Characters must not be inserted
into this signal.
Black White
0.7V
RGB Amplitude Adjustment (PC D-Sub input)
Input RGB amplitude adjustment signal of VGA
(60Hz) into RGB2 [D-sub] terminal. Receive PC signal (VGA [60Hz]), and indicate
Service Adjustment Menu.(Main)
Select No.652 of Service Adjustment Menu.
Press [OK] key more than 2 seconds to start the
automatic adjustment.
The adjustment completes when the OSD
reappears.