Sanyo PLC-XW20A Service Manual page 14

■ Adjustment
5. Gain (Signal Amplitude) adjustments
Equipment
Input Signal
Enter the Service mode.
Adjust the amplitude of part A to be below value for each
test point by the Volume + or - button.
5-1 Input mode
Item no. Test Point
13 TP-R1
14 TP-G1
15 TP-B1
5-2 Input mode
13 TP-R1
14 TP-G1
15 TP-B1
6. 50% Luminance (Contrast Linearity)
Adjustments
Input Signal
Enter the Service mode.
If the black or white saturated picture can be seen, adjust
the value of below item to be reduced it by the Volume + or
- button.
Item no. Imput Mode
11 Computer
11 AV (NTSC)
7. Flicker Reduction
Input mode
Input Signal
Enter the Service mode.
Adjust to be minimum flicker for each color by the Volume
+ or - button.
Item no. Screen
19 Only red color picture
20 Only green color picture
21 Only blue color picture
Oscilloscope
16 step gray scale signal
Computer
Adjustment value
4.2 ± 0.1 Vp-p
4.2 ± 0.1 Vp-p
4.2 ± 0.1 Vp-p
AV (NTSC)
4.1 ± 0.1 Vp-p
4.1 ± 0.1 Vp-p
4.1 ± 0.1 Vp-p
A
16 step gray scale signal
Computer
1dot computer signal
8. White Balance Adjustments
Input Signal
Enter the Service mode.
Adjust each value of below item to be good white balance
by the Volume + or - button.
Item no. Imput Mode
17 and 18 Computer
17 and 18 AV (NTSC)
(17:Red, 18:Blue)
Note:
The white balance of Computer and AV pictures must be
same.
(9. Color Shading Correction)
For the color shading correction, the proper computer and
" Color Shading Correction" software are needed.
The software can be ordered as follows.
COLOR SHADING CORRECTION
Service Parts No. 645 056 6288
Note:
The software for the previous model "PLC-XW20" or "PLC-
SW20" can not be used.
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16 step gray scale signal