Hitachi 42PD9800TA Service Manual page 23

Amplitude Adjustment (Composite PAL)
Item
Preparation
(1)
Input Composite PAL amplitude adjustment
signal into AV3 terminal.
Black pattern: Set pedestal level.
Characters must not be inserted
into this signal.
White (105 IRE)
0.735V
[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.
Amplitude Adjustment (Composite NTSC)
Item
Preparation
(1) Input Composite NTSC adjustment signal into
AV3 terminal.
Black pattern: Set pedestal level.
Characters must not be inserted
into this signal.
White (105 IRE)
0.750V
[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.
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42PD9800TA (FW1)
(1)
(2)
(1) Receive Composite NTSC adjustment signal, and
(2) Select No.597 of Service Adjustment Menu.
23
Procedure
Receive Composite PAL adjustment signal and
indicate Service Adjustment Menu.(Main (1))
Select No.597 of Service Adjustment Menu.
Press [OK] key more than 2 seconds to start the
automatic adjustment.
The adjustment completes when the OSD
reappears.
Procedure
indicate Service Adjustment Menu. (Main (1))
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.