![background image](http://html.mh-extra.com/html/lg/gsa-4166b/gsa-4166b_service-manual_211208049.webp)
53
2. Focus/Tracking/Sled Servo Circuit
2-1. Focus, Tracking & Sled Servo Process
F
E
D
C
A
B
H
G
Pick-up
Focus Error
Detector
Focus Error
Detector
A,B,C,D
A,B,C,D
E,F,G,H
A,B,C,D
E,F,G,H
IC121 AN22113A
FE
TE
IC201
Servo Control
MN103SA6G
TE
FE
A/D
D
A
C
SLED
COMPENSATOR
A/D
PARALLEL
DIGITAL
COMPENSATOR
SDRV
60
64
66
67
STEP2
STEP1
IC301 BD7956FS
29
30
M
Stepping Motor
Logic
A+
37
38
40
39
A-
B-
B+
Tracking Focusing
Actuator
T-
T+
F-
F+
5
4
LEVEL SHIFT
FDRV
TDRV
LEVEL SHIFT
53
54
51
52
Focus, Tracking, Sled Servo
Содержание GSA-4166B
Страница 18: ...2 2 Pick up A Release 1 screw C and remove the Pick up Pick up Unit Pick up C Fig 2 2 18 ...
Страница 39: ...43 3 MD Assy For LightScribe Optical Encoder Unit OPU ID Movement Range L 21um ...
Страница 86: ...90 CD Laser Power Setup Result HC_CD Laser Power Setup Result DVD Laser Power Setup Result ...