Hitachi 42EDT41A, Service Manual

Page: 49 / 89

49
PW1A
Item AUTOMATIC SIGNAL LEV EL ADJ USTMENT –VIDEO
Procedure Preparation
(1) Input the adjustment signal of 576p or
480p format into AV1 input terminal.
(1) Select AV1 and enter the service adjustment mode.
the adjustment signal (2) Select No.743 “Automatic White peak Adj. (Multi)”
and press OK button for more than 2 seconds to
start the adjustment.
It will complete the adjustment after the OSD of
“AUTO MODE” disappeared.
[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.
The signal level of black area
should be pedestal level.
This signal must not be inserted
characters etc.
Black White
0.7V