Sanyo PLV-55WM1 Service Manual page 66

Electrical Adjustments
. .
Ga Gain adjustment ain a a just men t
Equipment Equipm ment Oscilloscope sc
Input signal 16-step gray scale signal
9-1 Input mode INPUT 2 [Analog RGB] mode
Input format 720p computer signal
9-2 Input mode INPUT 4 [Video] mode
Input format NTSC composite signal
9-3 Input mode VIDEO_2 [Y,Pb/Cb,Pr/Cr] mode
Input format 720p component signal
9-4 Input mode VIDEO_2 [Y,Pb/Cb,Pr/Cr] mode
Input format 1080i component signal
1. Enter the service mode.
2. Change data values for each test points to adjust the
waveform "a" to be minimum amplitude in each
mode.
Item no. Test Point
7 TPPANELG
8 TPPANELB
9 TPPANELR
White Level
(a)
⁄0
Common Center adjustment
Input mode INPUT 2 [Analog RGB] mode
Input signal 1 line dot pattern 720p computer signal
1. Enter the service mode.
2. Project only one color component to the screen.
3. Change data value to obtain the minimum flicker
for each color on the screen.
Item no. Screen
13 Only green color picture
14 Only blue color picture
15 Only red color picture
⁄1
Gamma adjustment
Input signal 16-step gray scale signal
11-1 Input mode INPUT 2 [Analog RGB] mode
Input format 720p computer signal
11-2 Input mode INPUT 4 [Video] mode
Input format NTSC composite signal
1. Enter the service mode. nter the he he serv v vic c e mo v ic
2. If the black or white saturated picture can be seen, the bla a ack o or r white sa
16
adjust the item no. "
mode.
scop e
ated pic ure can be see
" to be reduced it in each n e
⁄ ⁄ ⁄ ⁄2
White Balance adjustment anc
Inp Input signal
12-1 Input mode
Input format
12-2 Input mode
Input format
1. Enter the service mode.
2. select item no. "
change data values respectively to make a proper
white balance.
Note:
Confirm that the same white balance is obtained in
video and computer input.
Note on WHITE UNIFORMITY Adjustment
If you find the color shading on the screen, please
adjust the white uniformity by using the proper comput-
er and "Color Shading Correction" software supplied
separately. The software can be ordered as follows;
COLOR SHADING CORRECTION ver.. 3.03
Service Parts No.
n,
- 66 -
e ad djust men t
16-step gray scale signal 6 st p gra ca e sig al
INPUT 2 [Analog RGB] mode
720p computer signal
INPUT 4 [Video] mode
NTSC composite signal
17 18
" (Red) or " " (Blue), and
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