PG-C30XE. Version 1.4 - Sharp Projector Handy Guide. Page 40

40

1. Setting the oscilloscope
Set the range to DC 1 V/div and 5µs/div.
2. Connecting the PC interface
1) Connect the PC interface to the projector. Make suret he CON2 (P8404), CON3 (P8502)
and CON4 (P8405) connectors are all tight in position.
2) Connect the cable between the computer’s ANALOG OUTPUT terminal and the DSUB
(INPUT1 on the projector) connector.
3) Set the projector’s input selector to the RGB1position.
4) Set the signal generator to the XGA mode (1024 x 768, 60Hz, 32-tone scale). Keep the
output amplitude at 700mVp-p.
5) Turn on the power.
3. Adjusting the levels and checking the tones
1) Press the SW5101 switch to call up the process mode.
2) Enter 8 for the SH-PHASE setting on the OUTPUT3 menu. (Adjust to get the on-screen
display characters clearand crisp.)
(A/D menu adjustment)
3) R-BRIGHT adjustment: Feed the black signal and adjust the R-BRIGHT setting on the A/D
menu screen until the bitless state.
4) G-BRIGHT adjustment: Feed the black signal and adjust the G-BRIGHT setting on the A/D
menu screen until the bitless state.
5) B-BRIGHT adjustment: Feed the black signal and adjust the B-BRIGHT setting on the A/D
menu screen until the bitless state.
6) R-D adjustment: Feed the white signal and adjust the R-D setting on the A/D menu screen
until the bitless state.
7) G-D adjustment: Feed the white signal and adjust the G-D setting on the A/D menu screen
until the bitless state.
8) B-D adjustment: Feed the white signal and adjust the B-D setting on the A/D menu screen
until the bitless state.
4. DTV adjustment
1) Feed the 480P Y signal to INPUT1. Keep the R (Pr) and B (Pb) without signal input.
2) G-BRIGHT adjustment: Make this setting the same as the G-BRIGHT setting on the A/D
menu screen.
3) CR-OFFSET adjustment: Feed the 56% white signal and adjust the CR-OFFSET setting
on the DTV menu screen until the bitless state.
4) CB-OFFSET adjustment: Feed the 56% white signal and adjust the CB-OFFSET setting on
the DTV menu screen until the bitless state.
5) G-BRIGHT correct adjustment = Adjust the value of G-BRIGHT up 6 point.
6) Press SW5101 and exit from the process mode.
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.