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MZ-R900
2727
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM – SERVO Section –
33
29
28
41
42
1
44
21
31
26
25
43
24
23
4
8
9
10
11
12
14
5
6
13
7
18
19
JX JY JX
IX IY
IY
IX
JX
JY
A
B
C
D
MON
IX
A
B
CD
OPTICAL PICK-UP BLOCK
(LCX-4R)
HR601
OVER
WRITE
HEAD
S0
S1
D
D-C
PD-NI
PD-O
C
B
A
VREF
A-C
JY
JX
IX
IY
RF AMP,
FOCUS
ERROR,
TRACKING
ERROR
TPP/WPP
APC
S-MONITER
RF OUT
PEAK
BOTM
ABCD
FE
ADIP IN
TE
ADIP
PD-I
OFTRK
VC
SBUS
SCK
S-MON
RESET
PEAK
/BOTM
RF AMP, FOCUS/TRACKING ERROR AMP
IC501
M603
OVER WRITE
HEAD
UP/DOWN
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
AUTOMATIC
POWER
CONTROL
Q501
20
LD
SERIAL
INTERFACE
TRK+
FCS+
FCS–
FCS+
FCS–
TRK–
TRK+
TRK–
37
44
45
46
47
56
74
49
12
217
221
9
161
194
195
160
78
35
33
41
38
37
42
25
38
31
1 2 3 5 6
199 198 197 201200
4
7
CHARGE
PUMP 2
27
28
CHARGE
PUMP 1
100
101
93
94
95
87
223
88
166
102
99
97
98
96
233
83
82
80
81
18
19
24
25
8
10
35
33
89
90
2731
26
20
16
17
3
2
46
44
55 56 1
6 220
14
12
41
29
42
40
39
38
37
4
5
48
53
52
51
54
105
62
68
67
LD-A
(TRACKING)
(FOCUS)
2-AXIS
DEVICE
OVER WRITE
HEAD DRIVE
Q604, 605
MM
EFM
PRE DRIVER
H-BRIDGE
PRE DRIVER
SYSTEM CONTROL (1/2)
HB
HA
OUTA
OUTB
VREF
C1H
C1L
C2H
C2L
VRECIN2
CLK
EFM
VRECIN1
VRECO
B+
SW
RECON
OE
RI
FI
MODE3
MODE2
MODE1
HD CON2
HD CON1
EFMD
OVER WRITE HEAD DRIVE
IC601 (1/2)
RFI
PEAK
BOTM
ABCD
FE
TE
ADIP
VC
VREF MON
OFTRK
XRF RST
S MON
M602
(SLED)
SSB CLK
PD S0
PD S1
SSB DATA
APCREF
SYSTEM CONTROLLER,
DIGITAL SIGNAL PROCESSOR,
16M BIT D-RAM
IC801 (1/3)
• SIGNAL PATH
: PLAYBACK
: REC (ANALOG IN)
: REC (DIGITAL IN)
A
B
C
D
DIN1
ADDT
DADT
DIN1
(Page28)
(Page 28)
(Page 28)
(Page 29)
(Page 29)
ADDT
DADT
CLK
E
VREF
SLCU
SLCV
SPCU
SPCV
SPCW
SLD1 MON
SLD2 MON
CLV MON U
CLV MON V
CLV MON W
SPDU
SPDL MON
SPFD/SPVS/PWM3
SPDL AUX PWM
SLCW
SLDW
SFDR
SLDV
SLDR
SLD MON
FRDR
FFDR
TRDR
TFDR
SPDV
SPDW
XRST MTR DRV
SPINDLE
SERVO
DRIVE
SWITCH
IC805
RI1
FI1
RI3
FI3
RI4
FI4
PWMI4
RI2
FI2
VI
WI
CPWO
CPVO
CPUO
CLV MON W
CLV MON V
CLV MON U
OF
UI
PWM
RO1
FO1
RO3
FO3
FCS–
FCS+
TRK–
TRK+
RO4
VO
WO
FO2
RO2
CPAIM
FO4
CPAIP
CPBIP
CPBIM
CPA0
SLD 2 MON
SLD 1 MON
CPB0
UO
CPUI
CPVI
CPWI
COM
TRACKING
COIL DRIVE
FOCUS
COIL DRIVE
SLED VOLTAGE
MONITER
SPINDLE
VOLTAGE MONITOR
SLED
MOTOR
DRIVE
SPINDLE
MOTOR
DRIVE
FOCUS/TRACKING
COIL DRIVE,
SPINDLE/SLED
MOTOR DRIVE
IC551
BIAS
M601
(SPINDLE)
MM
U
WV