Sanyo VPC-AZ1, Service Manual

Page: 18 / 52

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7-2. LCD RGB Offset Adjustment
Adjusting method:
1. Adjust LCD “RGB Offset” so that the amplitude of the CL402
waveform is 4.0 V
±
0.1 Vp-p.
7-3. LCD Gain Adjustment
Adjusting method:
1. Adjust LCD “Gain” so that the amplitude of the CL402 wave-
form is 7.3 V
±
0.3 Vp-p.
Note:
7-2. LCD RGB Offset adjustment should always be carried
out first.
7-4. LCD Red Brightness Adjustment
Adjusting method:
1. Adjust LCD “R Bright” so that the amplitude of the CL403
waveform is (VG–0.1)
±
0.05 Vp-p with respect to the CL402
(VG) waveform.
○○○○○○○
○
○○
A
CL404
CL407
Enlargement
○○○○○○
○
○
○○
A
CL404
CL407
CL402 waveform
4.0 V
±
0.1 Vp-p
CL402 waveform
7.3 V
±
0.3 Vp-p
CL402 waveform
CL403 waveform
VG
(VG–0.1)
±
0.05 Vp-p
7-5. LCD Blue Brightness Adjustment
Adjusting method:
1. Adjust LCD “B Bright” so that the amplitude of the CL401
waveform is (VG+0.2)
±
0.05 Vp-p with respect to the CL402
(VG) waveform.
Note:
7-2. LCD RGB Offset adjustment and 7-3. LCD Gain adjust-
ment have done.
CL402 waveform
CL401 waveform
VG
(VG+0.2)
±
0.05Vp-p
Note:
7-2. LCD RGB Offset adjustment and 7-3. LCD Gain adjust-
ment should always be carried out first.