Acer 7299sl Service Manual page 41

+12V
R427
15K
3
+
IC401
2
-
R421
10K
TILT
R428
12K
IC401 LM324 is offered for voltage amplifier to supply 0 ~ 24 at op-amp output terminal The amplifier
signal is input to tilt coil via Q411,Q412 current amplifier to get positive and negative coil current for tilt ,
adjustment.
Circuit Operation Theory
4
LM324 R414
1K
1
C41
R415
11 OPEN 1
4.7K
100V
(PE)
R422
47K
Fig8: Tilt circuit
No Copy/Reproduction Allowed
+24V
Q411
D667
Q412
B647 +12V
R429
56
2W
API Confidential
M401
3P
3
TILT
R432 2
COIL
330
1/4W 1
2-7