Block Diagram - Servo Section - Sony MZ-R37 Service Manual

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