Hitachi 42PD7200 Service Manual page 23

Item
Applicable Model
(1)
Input RGB amplitude adjustment signal of VGA
(60Hz) into RGB2 [D-sub] terminal.
Black pattern: Set pedestal level.
Characters must not be inserted
into this signal.
0.7V
[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
(1) Input 576p or 480p adjustment signal
into AV4 terminal.
Black pattern: Set pedestal level.
Characters must not be inserted
into this signal.
0.7V
[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.
RGB Amplitude Adjustment (PC D-Sub input)
All models
Preparation
Black White
RGB Amplitude Adjustment (Main/Sub)
All models
Preparation
Black White
42PD7200 (PW2)
(1)
Receive PC signal (VGA [60Hz]), and indicate
Service Adjustment Menu.(Main)
(2)
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.
(1) Receive 576p or 480p adjustment signal on AV4
terminal input.
Indicate Service Adjustment Menu.
(2) 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.
(3) 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.
22
Procedure
Procedure