LG HT903WA Service Manual page 27

8. FOCUS ON WAVEFORMS
CD_DVDCT
FOO
F+
F-
FIG 8-1 (DVD)
CD_DVDCT
FOO
F+
F-
FIG 8-2 (DVD)
9. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION)
SPINO
SP-
SP+
LGE Internal Use Only
FIG 9-1
1
2
3
4
2
1
3
4
2
3
4
1
2
3
1
2-18 Copyright © 2008 LG Electronics. Inc. All right reserved.
1
IC501
2
3
IC501
Only for training and service purposes