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Hitachi 32LD7800TA Manual

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47
ENGLISH
Depending on the kind of system equipment used, images may not be displayed normally. In this case, make the adjustments
suggested below. (only for RGB2)
• The display image may be momentarily disturbed during clock adjustment but this is not a failure.
Symptom 1
Text displayed across the screen appears vertically streaked, with some characters blurred (Figure 1).
Example
Figure 1
Adjustment
procedure
1) Press the MENU button. The Main Menu will be displayed.
2) Press the SELECT button and select Setup.
3) Press the OK button. The Setup Menu will be displayed.
4) Press the SELECT button and select Auto Adjust.
When adjustment is not possible with Auto Adjust
5) Press the MENU button. The Main Menu will be displayed.
6) Press the SELECT button and select Setup.
7) Press the OK button. The Setup Menu will be displayed.
8) Press the SELECT button and select Horizontal Clock.
(Display fine patterns as characters or a vertical striped pattern over the entire screen during Horizontal Clock adjustment.)
9) Press the or ADJUST buttons and search for clear characters over the entire screen.
10) Perform adjustment for symptom 2 below, when the characters are blurred on the entire screen.
Symptom 2
Text displayed across the screen appears blurred in its entirety (Figure 2).
A fine pattern flickers when displayed on the screen (Figure 3).
Example
Figure 2 Figure 3
Adjustment
procedure
1) Press the MENU button. The Main Menu will be displayed.
2) Press the SELECT button and select Setup.
3) Press the OK button. The Setup Menu will be displayed.
4) Press the SELECT button and select Auto Adjust.
When adjustment is not possible with Auto Adjust
5) Press the MENU button. The Main Menu will be displayed.
6) Press the SELECT button and select Setup.
7) Press the OK button. The Setup Menu will be displayed.
8) Press the SELECT button and select Clock Phase.
(Display fine patterns as characters or a vertical striped pattern over the entire screen during Clock Phase adjustment.)
9) Press or ADJUST buttons to make the text appear
clean across the screen.
9) Press or ADJUST buttons to make the text appear
without flickering.
TROUBLESHOOTING (continued)
Actions to Correct Abnormal Displays
Vertical Streaks
Before adjustment.
Some characters are blurred.
After adjustment.
All characters are
blurred.
After adjustment.
All characters appear
crisp now.
Before adjustment
After adjustment
Before adjustment
After adjustment
… 49 …


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