Actions to Correct Abnormal Displays. Hitachi CMP4211, CMP4212

01 QR58553-英語-初校 03.10.15 10:47 AM ページ26

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

Example

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

The display image appears flowing (figure 2) (RGB input).

Figure 1

Vertical streaks

Before adjustment

Some characters are blurred.

ABCDEFGHIJ abcdefgABCDEFGabcd

ABCDEFGHIJ abcdefgABCDEFGabcd

ABC

After adjustment

All characters appear crisp now.

After adjustment

All characters are blurred.

1) Press the AUTO button on the remote control.

Adjustment procedure

When adjustment is not possible with Auto Adjust

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

3) Press the SELECT button and select Setup.

4) Press the OK button. The Setup Menu will be displayed.

5) 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.)

6) Press the or ADJUST buttons and search for clear characters over the entire screen.

7) 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

ABCDEFGHIJ abcdefgABCDEFGabcd

ABCDEFGHIJ abcdefgABCDEFGabcd

Example

After adjustment

ABC

Before adjustment

After adjustment

1) Press the AUTO button on the remote control.

Adjustment procedure

When adjustment is not possible with Auto Adjust

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

3) Press the SELECT button and select Setup.

4) Press the OK button. The Setup Menu will be displayed.

5) 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.)

6) Press or ADJUST buttons to make the text appear clean across the screen.

6) Press or ADJUST buttons to make the text appear without flickering.

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