C-Brt - Sharp LC-13SH1U Service Manual

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.
7 IRE 5 IRE
TEST PATTERN (7/5/3 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
3 IRE
5-4
L0170EA