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ページを印刷するService Adjustment
User Static Data
V11
(Horizon, Blue)
Test Pattern Horizontal
V12
Phase (LOW)
Test Pattern Fine
V13
Horizontal Phase (LOW)
Test Pattern Coarse
V14
Horizontal Phase (LOW)
V15
Start Line (LOW)
Table 9: Service Adj. V00 ~ V15 (Continued)
HV_Feedback Voltage (D08)
Procedure:
1. Apply a NTSC all black pattern.
2. Connect meter (+) to TPA38 and (-) to TPA20.
3. Adjust DAC D08 until reading on meter is
5.0V ± 0.2V.
Sub-Bright Adjustment (B00)
Procedure:
1. Normalize picture.
2. Connect meter (+) to TPA18 and (-) to TNPA19.
3. Apply a black level pattern.
4. Adjust DAC B00 (Sub-Brightness) until reading on
meter is 17.0V ± 1V (7.5 IRE part is same light
output as 3 IRE part. See Fig. 9.
5. Apply a monoscope pattern and adjust bright
control to max. and confirm same reading on
meter.
Contrast Adjustment
Adj.
Default
Preparation:
Range
Level
1. Set Auto Color and AI Picture to "OFF".
2. Set the following in the user picture menu as
FIXED
100
FIXED
90
FIXED
235
Set Cut Off Data:
FIXED
0
FIXED
11
Set Drive Data:
Procedure:
1. Use 100:1 probe for measurements.
2. Apply a black/white pattern. See Fig. 9.
3. Connect scope to TPLR1 and adjust Sub-Bright
4. Connect scope to TPLG1 and adjust R-CutOff
5. Connect scope to TPLB1 and adjust B-CutOff
6. Connect scope to TPLR1 and adjust Sub-Contrast
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follows:
COLOR: min. (0)
PICTURE: max (63)
BRIGHT: center (31)
SHARPNESS: min. (0)
•
DAC C00 (R_CutOff) to 128.
•
DAC C01 (G_RF CutOff) to 128.
•
DAC C02 (B_CutOff) to 128.
•
DAC C06 (G_Video CutOff) to 127.
•
DAC C07 (B_Video CutOff) to 127.
•
DAC C0A (G_Video Component) to 127.
•
DAC C0B (B_Video Component) to 127.
•
DAC C04 (
G_Drive RF) to 64.
•
DAC C05 (
B_Drive RF) to 64.
Figure 9. Black/white Pattern
(B00) data until voltage measured is 190V ± 2V.
See Fig. 10.
(C00) data until voltage measured is 190V ± 2V.
See Fig. 10.
(C02) data until voltage measured is 190V ± 2V.
See Fig. 10.
(B01) data to obtain 85V ± 2V between black
(7.5 IRE) and White level. See Fig. 10.
7.5 IRE
190V±2V (R, G, B)
GND
Figure 10. Contrast Adjustment.
85V ± 2V (R)
100 IRE
Use 100:1 Probe
Service Manual