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MZ-R909
4141
6-8. SCHEMATIC DIAGRAM – MAIN Board (2/4) – • See page 37 for Waveform. • See page 44 for IC Block Diagrams.
R906
R946
C902 C901
L903
10µH
L901
68µH
R941
L902
22µH
R911
R921
R920
C913
R907
C914
C903
C921
C908
R909
R902
C905R903
R910
D904
R947
C919 C920
D902
C924
C923
C925
C907
D903
L905
100µH
R917
C906
R905 C922
R915
C911
C917
C915
C932
C926
R551R552
C522
C521
R554 R553
C557
C558 C559
C564C563
R926
R936
C904
C566C512
RB552
C562
L904
10µH
IC901
IC551
CN502
R908
D901
R948
M603
C561
AP914
AP912
AP915
RB551
0
22k
0.5%
10
6.3V
10
6.3V
22k
470
150k
10k
0.5%
4700p
470k
0.1
100
6.3V
0.1
0.1
10k
470k
0.12.2k
10k
MA111-TX
3.3k
0.5%
10
6.3V
10
6.3V
MA2YD1500LS0
0.47
0.47
0.47
2.2
MA729-TX
0
0.01
2.2k 1000p
100
10
6.3V
0.1
0.1
0.1
1000p
00
0.1
0.1
00
0.033 0.033 0.033
0.0330.033
4.7k
0.5%
22k
0.5%
10
4V
0.10.1
10k
X4
0.033
XPC18A32FCR2
SC111258FCR2
10P
100k
MA2YD1500LS0
150k
0.5%
0.1
(VC)
(GND)
(VL)
3.3k
X4
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
C1
C2
C3
C4
C5
C6
C7
C8
C9
C12
D1
D2
D3
C10
C11
FFCLR
SLEEP
VLON
WK DET
REF KEY
RMC KEY
HALF LOCK
CLV CON W
CLV CON V
CLV CON U
CLV PWM
CLV MON U
CLV MON V
CLV MON W
SLD MON V
SLD MON U
SLD MON W
SLD PWM
SLD CON U
SLD CON V
SLD CON W
FCS-
FCS+
TRK-
TRK+
CSEL
C1
C2
C3
C1
C2
C3
C4
C5
C6
D1
D2
D3
D4
D5
D6
TF1
TR1
FR1
FF1
C4
C5
C6
D4
D5
D6
D1
D2
D3
X MTR DRV
VCP
VLP
PGND2
NC
VD
VC2
XRST
CRST
RSTREF
VREF
VB
GND
CLKSEL
VAIFON
FFCLR
SLEEP
CLK
VLON
XWK1
XWK2
XWK4
XWK3
VSTB
VRMC
GND
VL
VLO
VL
L2
PGND2
NC
L2
PGND2
LG
VG
PWM2
PWM1
INM2
RF2
DTC2
DTC1
INM1
RF1
L1
PNGD1
PGND1
NC
L1
VCOUT
VC
VCO
VC
GND
VIFFB
VDFB
VAFB
VA
VIF
UI2
PWM2
CPUO2
CPVO2
CPWO2
OE
GND1
VC
VG
CPWO1
CPVO1
CPUO1
PWM1
UI1
VI1
WI1
PGNDW1
WO1
VMVW1
VO1
PGNDUV1
UO1
VMU1
VMR1
RO1
PGND1
FO1
VMF1
FI1
RI1
COM1
CPUI1
CPVI1
CPWI1
GND2
NC
CPWI2
CPVI2
CPUI2
COM2
RI2
FI2
WMF2
FO2
PGND2
RO2
VMR2
VMU2
UO2
PGNDUV2
VO2
VMVW2
WO2
PGNDW2
WI2
VI2
SLEDN
SLEDU
SLEDV
SLEDW
HD DRV-
HD DRV+
CLVW
CLVV
CLVU
CLVN
POWER CONTROL
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
V
U
N
W
(SLED)
(SPINDLE)
M602
V
U
N
W
OVER WRITE
HEAD UP/DOWN
M601
1
10 10
1
(Page 40)
(Page 42)
(Page 43)