MZ-R37
– 25 –
– 26 –
6-2. BLOCK DIAGRAM — SERVO SECTION —
OVER WRITE
HEAD DRIVE
Q741,742
OVER
WRITE
HEAD
63
64
9
8
62
EFM
LOGIC
MODE1
MODE2
HA
HB
EFM
REC DRIVE
IC901 (1/2)
RF AMP
IC501
EFM/
ACIRC
ENCODER/
DECODER
SHOCK
PROOF
MEMORY
CONTROL
3
4
17
16
5
|
9
•
11
|
15
1
•
2
•
18
•
19
XWE
XRAS
XCAS
XOE
DQ1-DQ4
SDTI
LRCK
BCK
MCLK
SDTO
DIN
XRST
DRAM
IC602
DIGITAL
AUDIO
IN
38
1
2
3
33
37
36
RF
AGC/
EQ
AUX
SW
ABCD
AMP
FOCUS
ERROR
AMP
PEAK/
BOTTOM
RF
AMP
8
9
10
11
19
I-V
CONV.
APC
I-V
CONV.
RF
AUX
PEAK
BOTM
26
28
16
17
18
12
20
TRACKING
ERROR
AMP
TE
SE
SWDT
SCLK
XLAT
APCREF
FO CONT
34
FE
35
4
5
6
7
ABCD
AI
AMP
32
ADFG
XSTBY
VC
VC
Q581
(1/2)
Q581
(2/2)
74
73
82
81
80
83
79 FO CONT
16 OSCI
17 OSCO
TFDR
TRDR
FFDR
FRDR
SFDR
SRDR
SPFD
SPRD
APCREF
XLRF
CDRF
DTRF
SE
TE
ADFG
FE
ABCD
BOTM
PEAK
AUX1
100
55
66
65
RFI
EFMO
62
63
64
78
45
44
42
41
D0-D3
46
|
49
29
|
32
•
34
|
38
•
43
XWE
XRAS
XCAS
XOE
24
DADT
23
ADDT
A00
|
A09
A0
A9
25
26
27
ALRCK
ABCK
FS256
21
DIN
FOCUS/TRACKING COIL
SLED/SPINDLE MOTOR DRIVE
IC701
DRIVE
20
21
86
85
29
27
DRIVE
16
17
88
89
8
10
DRIVE
18
19
92
91
12
14
DRIVE
35
3
4
34
6
DRIVE
22
94
93
95
13
15
12
11
10
9
8
7
6
5
4
2
1
25
X601
22.5MHz
SPOFF
RSI
OPTICAL
PICK-UP
I
J
A
B
C
D
E
F
PD
VCC
AUTO POWER
CONTROL
Q571
FOCUS COIL
TRACKING
COIL
LDON
SD+
SD–
AOUT
AOUTB
PROTECT
SLED
MOTOR
COM
W
V
U
SPINDLE
MOTOR
XINTREC SW
INLS
2.8V
6
19
20
1
12
17
14
11
DRIVE
VM
PSB
STBY
FG
SPINDLE MOTOR DRIVE
IC761
POWER
SWITCH
Q761
HIGH
VCC DET
IC581
MD MECHANISM
2.8V
2.8V
XRFSW
CLV STB
3
4
XPHOTO SW
MNT 0
90
FS4
MNT 1
MNT 3
SWDT
SCLK
XLAT
SRDT
SENS
XRST
SQSY
DQSY
TX
WRPWR
FGIN
61
3
4
75
80
2
97
77
98
20
58
47
29
71
72
8
82
79
78
63
99
76
33
34
T COUNT
MODE 1
MODE 2
RF SW
RSI
SPOFF
XPHOTOSW
INLS
XINTRECSW
PROTECT
LDON
XSHOCK
FOK PORT
SDO 1
SCK 1
XLAT
SDI 1
SENSE
XRST
SQSY
DQSY
TX
WRPWR
FGIN
SYSTEM CONTROL
IC801 (1/3)
100
CLV STB
AUDIO
SECTION
A
FS4
SYSTEM
CONTROL
SECTION
C
04
DIGITAL SERVO ENC/DEC
&
ATRAC MEMORY CONTROLER
IC601
2.8V
Signal path
: PLAY(DIGITAL)
: REC(DIGITAL)
R-ch : same as L-ch.
+
–
–
+
VC
(Page 30)
(Page 27)