Sharp LC-13SH1U Wartungshandbuch PDF herunterladen (Seite 19)

5-4

L0170EA

6. Sub-Brightness Adjustment

Purpose: To mix red, green and blue beams correctly

for pure white.

Symptom of Misadjustment: White becomes bluish

or reddish.

Confirmation at [VIDEO-1]

1. Set CG951 to 7/5/3 IRE 3-step grayscale.

TEST PATTERN (7/5/3 IRE)

7 IRE 5 IRE 3 IRE

2. Apply CG951 video signal to VIDEO1 input.

3. Enter the Service mode.

4. Make sure that contrast and brightness controls are

set to initial position.

5. Confirm “5 IRE” position was biginning to bright.

6. If “5 IRE” position was bigining to bright, no need to

adjust.

7. If “5 IRE” position is not avilable or to be highly

brightness, then adjust the following values by using

remote control unit. Refer to “1. Initial Setting.”

RF/VIDEO1: BRT

VIDEO2: C-BRT

Confirmation at [VIDEO-2]

1. Set CG951 to 7/5/3 IRE 3-step grayscale.

2. Apply CG951 video signal to “Y” input.

3. Enter the Service mode.

4. Make sure that contrast and brightness controls are

set to initial position.

5. Confirm “5 IRE” position was beginning to bright.

6. If “5 IRE” position was beginning to bright, no need

to adjust.

7. If “5 IRE” position is not available or to be highly

brightness, then adjust the following values by using

remote control unit. Refer to “1. Initial Setting.”

RF/VIDEO1: BRT

VIDEO2: C-BRT

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Sharp LC-13SH1U Wartungshandbuch Seite 19