Khz Signal Registration Rough Adjustment - Sony VPH-G90U Service Manual

3-4-5. 64 kHz Signal Registration Rough
Adjustment
1. Set INPUT-A to the no-signal state, then select INPUT-
A.
2. Select the INT OSC PATTERN from INT. OSC menu
with the MENU key, then select P3 (fH = 64 kHz, fV =
60 Hz).
GREEN Registration Adjustment
3. Press the REGISTRATION CENT key and ADJ G key.
4. Press CUT OFF R and B keys to set GREEN only on
the screen.
5. Adjust the GREEN center to the screen center using the
↑, ↓, ← and → keys.
6. Press REGISTRATION SIZE key.
7. Roughly adjust H. SIZE (the horizontal size) with ←
and → keys, then V. SIDE (the vertical size) with ↑
and ↓ keys. Adjust the external circumference of the
GREEN test signal to the position 30 to 50 mm inside
the screen.
8. Press REGISTRATION KEY key.
9. Roughly adjust H. KEY and V. KEY (the horizontal
and vertical keystones) using the ↑, ↓, ← and → keys.
10. Press REGISTRATION BOW key.
11. Roughly adjust H. BOW and V. BOW (the horizontal
and vertical bows) using the ↑, ↓, ← and → keys.
12. Press REGISTRATION SKEW key.
13. Roughly adjust H. SKEW and V. SKEW (the
horizontal and vertical skews) using the ↑, ↓, ← and →
keys.
14. Press REGISTRATION PIN key.
15. Roughly adjust H. PIN and V. PIN (the horizontal and
vertical pin cushions) using the ↑, ↓, ← and → keys.
3-6
RED Registration Adjustment
16. Press the ADJ R key.
17. Press CUT OFF B keys to set RED and GREEN only
on the screen.
18. Adjust RED registration in the same way as Steps 5 to
15. Adjust the RED signal to GREEN signal.
BLUE Registration Adjustment
19. Press the ADJ B key.
20. Press CUT OFF R keys to set BLUE and GREEN only
on the screen.
21. Adjust BLUE registration in the same way as Steps 5 to
15. Adjust the BLUE signal to GREEN signal.
Saving Registration Data
22. Keep pressing MEMORY key for 5 seconds or more.
23. Select "YES" on the screen with ↑ and ↓ keys, then
press the ENTER key.
24. Select "REGISTRATION DATA" on the screen with ↑
and ↓ keys, then press the ENTER key.
25. Press the NORMAL key to exit from the adjustment
mode.
26. Press the PATTERN key to output the cross-hatch on
the screen, then check that the RED, GREEN and
BLUE registration have been adjusted roughly.
VPH-G90E/G90U/G90M