Hitachi 42HDT51M, Service Manual

Page: 31 / 131

31
PT5-G/PW1-H
6. 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
1. (ASPECT 16:9 Standard)
(5) Input XGA (60Hz) circle pattern into RGB. (ASPECT
Full)
Checking
(1) Receive RF, 480p, 1080i and XGA (60Hz) 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
(1) RGB: XGA (60Hz).
( )
3
SCREEN
0 1 2 2 1 0
A B
7. HDMI adjustment
a. DVI compatibility check
Preparation
1. Prepare HDTV signal generator.
2. Select 1080i format
3. Connect HDMI-DVI cable to the DVI input on the
AVC.
b. DVI/HDCP/Timing (Display Position) Check
1. Set 1080i crosshatch with black background,
with a small color bar and small multi-burst.
(Confirm that the picture appears as shown
below)
2. Press “INFO” button on remote control to
confirm that “1080i Format” indication appears.
3. Confirm that Horizontal and Vertical position
meet the following spec.
BACK TO ADJUSTMENTS
8. 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-items 1-1 and 1-2 from page 30. (“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) Check that the receiving channel goes to CH03.
Unit is set to factory settings.
(5) This procedure returns user settings to the values
and states shown in Table 1 on the following pages.