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13.3. SERVO BLOCK DIAGRAM
OPTICAL PICKUP UNIT
PHOTO DETECTOR
T1
A1
A2
(CD)
A4
A3
T2
HEAD
AMP
B1
B2
(DVD)
B4
B3
LASER DIODE(DVD)
LASER DIODE(CD)
CLOSE SW
S2601
OPEN SW
S2602
IC8001
(DV4.1)
TRSDRV
67
VIN6(DVD/CD)
114
VIN7(DVD/CD)
TRDRV
126
115
VIN8(DVD/CD)
116
VIN5(DVD/CD)
FODRV
127
113
VIN9(CD)
112
VIN10(CD)
SPDRV
66
111
DRV4(SW)
63
AD1
122
LPC01
104
TRAY-DRY
62
LPC1
103
LPC02
106
SP MUTE
30
RFINN
95
TRVFT MUTE
47
RFINP
96
TRAY CLOSE
64
TRAY OPEN
59
TRAY_MUT
60
RF SIGNAL
MOTOR DRIVE SIGNAL
IC8251
(MOTOR DRIVE)
VIN2
6
-
BIAS1
+
VIN4
22
VIN5
23
VIN1
5
-
+
OPOUT
+
27
-
VIN3
7
-
+
BIAS2
CH1
3
MUTE
CH2,4,5
4
MUTE
-
+
-
+
MUTE3
CH3
1
MUTE
35
TRACKING ERROR SIGNAL
VO2+
12
-
+
LEVEL
VO2-
SHIFT
11
-
+
OPIN+
25
VO1+
14
-
+
LEVEL
VO1-
SHIFT
13
-
+
OPIN-
26
VO3+
10
-
+
LEVEL
VO3-
SHIFT
9
-
+
IC8251-15,16,17,18
4Vp-p(0.5msec./div.)
-
VO4+
+
17
LEVEL
VO4-
18
SHIFT
-
+
VO5+
15
VO5-
-
16
+
LEVEL
SHIFT
-
+
DVD-K32GCS/PL/PLA
SERVO BLOCK DIAGRAM
DVD-K32GCS / DVD-K32PL / DVD-K32PLA
FOCUS ERROR SIGNAL
TRAVERS MOTOR
SPINDLE MOTOR
M2601
LOADING MOTOR
OPTICAL PICKUP UNIT
ACTUATOR
TRACKING
COIL
ACT T+
ACT T-
FOCUS
COIL
ACT F+
ACT F-
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