Toshiba 20N7XE, Service Manual

Page: 12 / 55

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GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
V
SPEC V p-p
MODEL: S9S Series (Reference factory adjustments)
Adjust the amplitude of color bar
(p-p value of the upper half)
NO ADJUSTMENT
1. SUB CONTRAST
(Measuring point) Q501 #14 R-OUT
(Adjusting signal) Sub Bright (NTSC) signal
(Adjusting method)
1. BUS data of Q501
RCUT (Q501 SUB ADDR:0C)
→
Initial value (20H)
Y
γ
(Q501 SUB ADDR:08/D7)
→
OFF (0)
WPL (Q501 SUB ADDR:08/D6)
→
OFF (1)
PACL (Q501 SUB ADDR:08/D5)
→
OFF (0)
COLOR (Q501 SUB ADDR:02/D7-DC)
→
MIN (00H)
2. Set user control to the standard 1
3. Change to adjust SCNT data (Q501 SUB ADDR:05/D4~D0).
X
It makes the point which doesn't have a change and it adjust with screen VR.
4. After adjustment, return the data which are set in steps 1, 2 above, to original data.
2. SUB COLOR PAL (THIS ADJUSTMENT AFTER SUB COLOR NTSC)
(Measuring point) Q501 #12 B-OUT
(Adjusting signal ) Sub Bright (PAL) signal
(Adjusting method)
1. Set BUS data of Q501 to the same value as that of SUB TINT adjustment.
2. Set user control to the standard 1.
3. Change COLP data (COLC Difference data) to adjust the 6th peak amplitude of rainbow color bar.
4. After adjustment return the data set in steps 1,2 above, to the original data.
1.3
±
0.2 V p-p