Hitachi 32PD7800, 42PD7800 Troubleshooting Actions to Correct Abnormal Displays, Example

Models: 42PD7800 32PD7800

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TROUBLESHOOTING (continued)

Actions to Correct Abnormal Displays

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)

Symptom 1

Text displayed across the screen appears vertically streaked, with some characters blurred (Figure 1).

(RGB input).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 1

 

 

 

Vertical

Before adjustment,

 

 

 

 

 

 

streaks

some characters

 

 

 

 

 

 

 

 

 

are blurred.

 

After adjustment,

 

 

 

 

ABCDEFGHIJ

 

 

 

ABC

 

 

 

 

abcdefgABCDEFGabcd

 

ABC

all characters appear

 

 

 

 

 

crisp now.

Example

 

 

 

ABCDEFGHIJ

 

 

 

 

 

 

 

abcdefgABCDEFGabcd

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

After adjustment, ABC all characters are

blurred.

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

Adjustment 5)

Press the MENU button. The Main Menu will be displayed.

procedure

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.

The display image may be momentarily disturbed during clock adjustment but this is not a failure.

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).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2

 

Before adjustment

Figure 3

 

 

Before adjustment

 

 

ABCDEFGHIJ

ABC

 

 

 

 

 

 

 

abcdefgABCDEFGabcd

 

 

 

 

 

 

 

 

ABCDEFGHIJ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

abcdefgABCDEFGabcd

 

 

 

 

 

 

Example

 

 

After adjustment

 

 

 

After adjustment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ABC

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 Adjustment 5) Press the MENU button. The Main Menu will be displayed. procedure 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

9) Press or ADJUST buttons to make the text appear

clean across the screen.

without flickering.

 

 

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Hitachi 32PD7800, 42PD7800 user manual Troubleshooting Actions to Correct Abnormal Displays, Example