Sharp XG-NV5XE (serv.man41) Service Manual ▷ View online
28
XG-NV5XE
XG-NV5XM
XG-NV5XM
ADJUSTING THE PC BOARD (CPCi-0031CE02. PC I/F Unit)
1. Setting the oscilloscope
Set the range to DC 1 V/div and 5µ/div.
2. Connecting the PC interface
1)
Connect the PC interface to the projector. Make surethe CON2 (P8404), CON3 (P8502) and CON4
(P8405)connectors are all tight in position.
(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.
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.
700mVp-p.
5)
Turn on the power.
3. Adjusting the levels and checking the tones
1)
Press the S5001 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.)
(Adjust to get the on-screen display characters clearand crisp.)
3)
Using the BRIGHT setting on the OUTPUT1 menu, adjustthe black level at TP8002 to 1.9 V.
4)
Using the ROS setting on the A/D menu, adjust thevoltage at TP8008 (or at pin (2) of IC8011) to 1.7 V.
5)
Using the GOS setting on the A/D menu, adjust thevoltage at TP8009 (or at pin (2) of IC8010) to 1.7 V.
6)
Using the BOS setting on the A/D menu, adjust thevoltage at TP8010 (or at pin (2) of IC8009) to 1.7 V.
7)
Make sure the GAIN setting on the A/D menu is 163.
8)
Using the B-D setting on the A/D menu, adjust the whitelevel at TP8001 to 3.6 V. Make sure also the tone
scale(number of tones) is as specified.
scale(number of tones) is as specified.
9)
Using the R-D setting on the A/D menu, adjust the whitelevel at TP8003 to 3.6 V. Make sure also the tone
scale(number of tones) is as specified.
scale(number of tones) is as specified.
10) Using the G-D setting on the A/D menu, adjust the whitelevel at TP8002 to 3.6 V. Make sure also the tone
scale(number of tones) is as specified.
11) Finally press the S5001 switch again to quit theprocess mode.
Display
