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15.3. SERVO BLOCK DIAGRAM
OPTICAL PICK UP UNIT
DVD
CD
f1
f2
f4
f3
HEAD
a
b
A
B
AMP
d
c
D
C
e1
e2
e4
e3
DVD
LASER DIODE
Q5271,Q5272
LD DRIVE
Q5281,Q5282
CD
LASER DIODE
LD DRIVE
IC3001
(DV5.0)
TRDRV
VCLKx2/PWMCO[1]/GPIO[50]
91
FODRV
PWMCO[0]/GPIO[49]
89
RF_A
69
A
RF_B
70
B
RF_C
72
C
TRVDRV
HSYNC/PWMCO[3]/GPIO[52]
RF_D
93
73
D
VC
80
VC
LD_DVD
88
DVD_LD
MD_DVD
86
DVD_MD
LD_CD
CD_LD
87
MD_CD
85
CD_MD
FG
APIWM[4]/ALRCLK/DUPRD1/IGPIO[24]
40
SPDRV
FIELD/PWMCO[2]/GPIO[51]
92
RFINN
RFINN
67
RFINP
66
RFINP
D
R
- V
M
U
T
E
APIWM[5]/ABCLK/DUPTD1/IGPIO[23] 39
RF SIGNAL
MOTOR DRIVE SIGNAL
IC2601
(MOTOR DRIVE)
IN1
42
-
Pre
+
LOGIC
Driver
CNF1
NF
41
amp
IN2
43
-
Pre
+
LOGIC
Driver
CNF2
NF
40
amp
OSC
IN4
45
-
Pre
+
LOGIC
Driver
CNF4
NF
38
amp
VREF
36
IC2601-48
FG
48
OSC
INSP
47
+
BEMP
LOGIC
-
DETECTER
-
+
LIMIT
C
T
L
1
4
STBY/BMSW
CTL2
5
34
TRACKING ERROR SIGNAL
OPTICAL PICK UP UNIT
IC2601-6,7,9,10
6.4Vp-p(5usec/div)
VO1F
TR+
6
POWER
MOS
VO1R
TR-
7
VO2F
FO+
9
POWER
MOS
VO2R
FO-
10
PVCC1
11
M+5.5V
PGND1
8
VO4F
DC1
31
POWER
MOS
VO4R
DC2
32
PVCC3
33
M+5.5V
PGND3
30
23
M+5.5V
27
SPINDLE MOTOR UNIT
W
A1
29
Pre
POWER
V
A2
26
Driver
MOS
U
A3
25
COM
21
COUT
19
CCOM
20
RNF1
24
RNF2
28
DVD-LS92P/PC
SERVO BLOCK DIAGRAM
FOCUS ERROR SIGNAL
ACTUATOR
TRACKING
COIL
FOCUS
COIL
TRAVERSE MOTOR
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