Hitachi P50H401/DW3, Service Manual

Page: 51 / 125

50
7 SCREEN CHECK
Preparation
(1) Set AC120±1V.
(2) Turn on the power and leave it more than 5 min.
(3) Receive circle pattern at 4:3 Expanded mode.
(4) Input 480p and 1080i circle pattern into Component
video 3 . (ASPECT 16:9 Standard)
Checking
(1) Receive RF, 480p and 1080i signal, then check
the following items 1~4:
1. Check the symmetry of the pattern (right/left).
2. Check the horizontal position and the balance
(right/left).
3. Check the symmetry of the pattern (top/bottom).
4. Check the vertical position and the balance
(top/bottom).
Remarks
3
SCREEN
0 1 2 2 1 0
A B
8 HDMI ADJUSTMENT
(1) DVI compatibility check
Preparation
1. Prepare HDTV signal generator.
2. Select DVI mode then 1080i format
3. Connect HDMI-DVI cable to the HDM I input on the
PDP set.
BACK TO ADJUSTMENTS
SIGNAL ASPECT SPEC(A,B)
Hitachi circle pattern
16:9 Standard 1
0 +/- 0.5
ATSC
DVI - HDMI
conversion cable
Set Top Box
9 FACTORY RESET
After all of the adjustments of main chassis are finished,
perform FACTORY RESET.
(1) Enter Adjustment Mode by the method described in
sub-item 1-1 from page 43 . (“Adjustment Procedure
Start-up”).
(2) From the first menu in Adjustment Mode, select
FACT RESET adjustment code.
(3) Activate FACT RESET by pressing “Right” cursor
key once.
(
4
) The procedure of the FACTORY RESET process is
the following and the DATA table is shown next.
(
7
)
When PDP turns ON , it will tune CH03 this is the
complete operation
of FACTORY RESET process.
Process of
FACTORY RESET operation.
A screen is colored
magenta
when FACTORY RESET
start.
A screen is colored
green
when FACTORY RESET
finish normally.
A screen is colored
RED
when FACTORY RESET
finish abnormally.
(6) After FACTORY RESET, it should be unplug AC
cord.Unplug and plug AC cord and then all settings
and data are updated.
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②
③
DW
3
U