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MZ-E90
6-2-2. SERVO BLOCK DIAGRAM
MINIDISC
MECHANISM
BLOCK
M902
(SLED)
M901
(SPINDLE)
MAIN BOARD
(2/3)
VOLTAGE MONITOR
5
6
3
2
FOCUS/TRACKING COIL DRIVE,
SPINDLES/SLED MOTOR DRIVE
TRK+
30
PRE
29
DRIVER
33
TRK-
32
MD
1
SECTION
(Page 21)
FCS+
7
4
PRE
8
DRIVER
FCS-
5
CN551
SLED1+
5
11
PRE
12
DRIVER
SLED1-
7
9
SLED2+
6
26
PRE
SLED2-
8
28
DRIVER
1
37
38
39
40
CLVU
2
46
47
CLVV
PRE
3
44
DRIVER
43
CLVW
4
42
UNREG
AVCC
18
VC
VG
20
VG
04
– 23 –
DIGITAL SIGNAL PROCESSOR,
DIGITAL SERVO SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
16M BIT D-RAM
IC601(2/2)
SLED
IC552
7
139
SLCV
DAVDD2
1
SLCU
138
DAVDD3
IC551
21
110
TFDR
HI-BRIDGE
CONTROL
22
109
TRDR
16
FFDR
HI-BRIDGE
111
CONTROL
15
112
FRDR
134
13
SLDV
HI-BRIDGE
14
133
SLDU
CONTROL
141
SLVS
25
135
SLDW
23
HI-BRIDGE
CONTROL
24
140
SLCW
34
132
SPCW
35
131
SPCV
130
SPCU
36
48
3 PHASE
1
CONTROL
2
3
17
BIAS
VREG
VDC0
1
VDC1
36
VDC2
37
VDC3
68
VDC4
108
VLD
VDC5
136
25
26
19
OSCI
X601
22.57MHz
20
OSCO
SPINDLE MOTOR SWITCH
IC504
7
124
1
2
SPVS
3
127
SPDU
6
5
SPINDLE MOTOR SWITCH
IC505
7
SPDV
128
1
2
3
SPDW
129
6
5
CN801
(2/4)
SPDL START SW
21
SLD 1 MON
27
30
CLV W
26
CLV V
28
CLV U
32
SPDL PWM
23
XRST MTR DRV
– 24 –
SYSTEM
3
CONTROL
SECTION
(Page 25)
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