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2.2k
1000p
0.01
0.1
0.1
0.12.2k
470k
22k
SC111258FCR2
0.1
100
6.3V
10k 10k
0.1
470
0.1
10 6.3V
10 6.3V
10
6.3V
0.1
22
6.3V
22k
0.1
0.1
100
10
6.3V
1000p
2.2
220k
220k
220k
0.1 1
XC61CN0802NR 470k
220k
1M
100k
0.1
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4700p1000p
1000p
0.022
0.01
0.022
0.01
0.01
0.022
10k
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10k
2.2k
2.2k
2.2k
1M
1000p
MA111-TX
10
6.3V
10P
2.2
2SD2216J-R
(TX).SO
2SD2216J-R
(TX).SO
2SD2216J-R
(TX).SO
MA729-TX
10
6.3V
MA2YD1500LS0
MA2YD1500LS0
XPC18A32FCR2
2SA1745-6.7TL
100k
0.1
(VLO)
10k
0.5%
(VCO)
1k
0.5%
2.2k
0.5%
0
4.7k
0.5%
22k
0.5%
00
0
0
47k
0.5%
10k
0.5%
0.047 0.047 0.047
10k
0.5%
100k
0.5%
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
V
L
O
N
FCS- FCS+
T
R
K
-
T
R
K
+
C1
C2
C3
C
1
C
2
C
3
C
4
C
5
C
6
D1
D2
D3
TF1
TR1
FR1
FF1
C4
C5
C6
D1
D2
D3
D5
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D7
D5
D6
D7
D4
D8
D4
D8
XRST
SCW
SCV
SCU
SP
SMU
SMV
SMW
XMD
CMW
CMV
CMU
CP
CCU
C
C
V
C
C
W
R
E
C
K
H
A
L
F
W
D
E
T
CSEL
FF
SL
ZZ1ZZ2ZZ3
VCP VLP
PGN
D2
NC
VD
VC2
XRST
CRST
RSTREF
VREF
VB
GND
CLKSEL
VAIFON
FFCLR
SLEEP
CLK
V
LO
N
XW
K
1
XW
K2
X
W
K4
X
W
K
3
V
STB
V
R
M
C
G
ND
VL
V
LO
VL
L2
PGN
D2
NC
L2
PGND2
LG
VG
INM2
RF2
DTC2
DTC1
INM1
RF1
L1
PG
ND1
N
C
L1
VCOU
T
VC
VCO
VC
G
ND
V
IFFB
VD
FB
V
AFB
V
A
V
IF
UI2
PWM2
CPUO2
CPVO2
CPWO2
OE
GND1
VC
VG
CPWO1
CPVO1
CPUO1
PWM1
UI1
V
I1
W
I1
PG
N
D
W
1
W
O1
VM
V
W
1
V
O
1
PG
ND
U
V
1
U
O
1
V
M
U
1
VM
R
1
R
O
1
P
GN
D
1
FO
1
V
M
F1
FI1
RI1
COM1
CPUI1
CPVI1
CPWI1
GND2
NC
CPWI2
CPVI2
CPUI2
COM2
RI2
FI2
W
M
F2
FO
2
PG
N
D
2
RO
2
VM
R2
V
M
U
2
U
O
2
PG
N
D
UV
2
V
O
2
VM
VW
2
W
O
2
P
GN
D
W
2
W
I2
V
I2
SLEDN
SLEDU
SLEDV
SLEDW
HD DRV-
HD DRV+
CLVW
CLVV
CLVU
CLVN
P
GND1
VGFB
VDRF
(2/4)
GN
D
N
C
V
DD
O
UT
V
U
N
W
(SLED)
(SPINDLE)
M602
V
U
N
W
OVER WRITE
HEAD UP/DOWN
M601
1
10
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
POWER CONTROL
VOLTAGE
DETECTOR
Q901,902
SWITCHING
B+ SWITCH
Q903,904
10µH
100µH
100µH
10µH
22µH
6-8. SCHEMATIC DIAGRAM – MAIN Board (2/4) –• See page 42 for Waveform. • See page 43 for IC Block Diagrams.
(Page 38)
(Page 40)