Sharp Notevision XG-C40XE, Service Manual

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XG-C40XU/XE
ADJUSTING THE PC BOARD (CPCi-0047CE15/16. PC I/F Unit)
1. RGB level adjustment
1) Connect a signal generator to the projector that is equipped with the 0047 PWB. Set the signal generator
output to the XGA mode (VESA1024x768, 60Hz, 32-tone waveform). Adjust the output amplitude to 700
mVp-p at the P8404 connector.
2) Set the projector input to the RGB1 mode.
3) Using a pushbutton on the projector, call the process mode.
4) On the main menu screen, select the group “A/D”.
5) Select the subject “R-BRIGHT” in the group “A/D” and adjust the “R-BRIGHT” setting so that there should be
no bits around the screen.
6) Do the same with the “G-BRIGHT” and “B-BRIGHT” settings.
7) Next select the group “R-D” and the settings of the above subjects so that there should be no bits around the
screen.
8) Then select the groups “G-D” and “B-D” and make the same adjustments.
Now let’s go to the DTV level adjustment.
2. DTV level adjustment
1) Set the signal generator output to the green-only mode.
2) On the main menu screen of the process mode, select the group “DTV”.
3) Select the subject “G-BRIGHT” in the group “DTV” and adjust the “G-BRIGHT” setting so that there should be
no bits around the screen.
4) Do the same with the “CB-OFFSET” and “CR-OFFSET” settings.
Now the 0047 PWB on the projector is adjusted for delivery.
Note: There is no need to make the VIDEO input adjustments.
Servicing precautions
If the convergence gets out of spec in servicing the set, call the process mode and select the following group and
subjects.
Group: NOKO
Subject: R-CNV-H, R-CNV-V
G-CNV-H, G-CNV-V
B-CNV-H, B-CNV-V
(H and V are for horizontal and vertical adjustments, respectively.)
Adjust the above settings to the range of 0 to 4.