Block Diagram - Servo Section - Sony MZ-R55 Service Manual

MZ-R55
6-2. BLOCK DIAGRAM — SERVO SECTION —
OVER OVER WRITE
10
WRITE HEAD DRIVE
11
HEAD Q601, 602
OPTICAL RF AMP
PICK-UP IC501
1
I RF
AMP
J 2
AUX
SW
VC 3 VC
ABCD
4
A
AMP
B 5
C 6
I-V
D 7
CONV.
AI
AMP
8
E I-V
CONV.
F 9
PP 10
APC
11
AUTO POWER
VCC CONTROL 2.7V
Q502
LDON
TRACKING
COIL
FOCUS COIL
SLED
SD+
MOTOR
SD–
AOUT
AOUTB
PROTECT
XINTREC SW
SPINDLE MOTOR DRIVE
INLS
IC701
COM 6 12
VM
SPINDLE W 19 17
DRIVE
STBY
MOTOR
V 20 14
FG
U 1 11
2.7V
MD MECHANISM
04
– 25 –
REC DRIVE
IC602
DIGITAL SERVO
ATRAC
17
MODE1
IC503
MODE2 16
EFM FEMO
14 100
LOGIC
EFM/
ACIRC
ENCODER/
DECODER
RF
RF RFI
AGC/
38 55
EQ
SHOCK
AUX
AUX1 PROOF
33 66
MEMORY
PEAK
37 62 PEAK
PEAK/ CONTROL
BTM
BOTTOM BOTM
36 63
ABCD
35 64 ABCD
FOCUS
FE
34 65 FE
ERROR
AMP
ADFG
32 78 ADFG
TRACKING TE
TE
26 74
ERROR
SE
28 73 SE
AMP
DIGITAL
SWDT DTRF AUDIO
16 82
IN
SCLK 17 81 CDRF
XLAT 18 80 XLRF
APCREF
12 83 APCREF
FO CONT 20 79 FO CONT
XSTB
Q503 Q503
19 16 OSCI
(1/2) (2/2)
17 OSCO
X501
22.5MHz
FOCUS/TRACKING COIL
SLED/SPINDLE MOTOR DRIVE
IC505
29 20 86 TFDR
DRIVE
27 19 85 TRDR
8 16 88 FFDR
DRIVE
10 17 89 FRDR
34
PSB
12 18 92 SFDR
DRIVE
14 19 91 SRDR
SPOFF
4 35
DRIVE
RSI
6 3
DRIVE
25 22 94 SPFD
93 SPRD
XRFSTBY
HIGH
POWER
VCC DET
3 4
SWITCH 2.7V
IC510
Q701
XPHOTO SW
DRAM
IC509
WE 45 4 XWE
44 5
XRAS XRAS
XCAS 42 21 XCAS
XOE 41 22 XOE
2
D0-D3 •
46 3
• D0-D3
|
22
49
•
23
6 A0
29
•
A0
| 11
|
39 •
A11
14
•
|
43
A11
19
DADT
24 SDTI
ADDT
23 SDTO
(Page 27)
ALRCK 25 LRCK
A
ABCK 26 BCK
FS256 27 MCLK
AUDIO
DIN
SECTION
21 DIN
XRST
DC/DC CONVERTER
2.7V
IC601
L602
PWM
5 8V
COMP
D602
1
2 2.7V
SYSTEM CONTROL
IC802 (1/3)
MNT 0 1 76 T COUNT MODE 1 34
MNT 1 2 99 SHOCK MODE 2 33
MNT 3 4 63 FOK
5 78
SWDT SDO 1
SCLK 6 79 SCK 1
XLAT 7 82 XLAT
SRDT 8 77 SDI 1 XRFSTBY 8
SENS 9 97 72
SENSE RSI
XRST 10 2 XRST SPOFF 71
SQSY 11 80 SQSY XPHOTOSW 29
DQSY 12 75 DQSY INLS 47
TX 15 4 TX XINTRECSW 58
WRPWR 13 3 20
WRPWR PROTECT
FGIN 95 61 FGIN LDON 98
2.7V
– 26 –
Signal path
: PLAY(DIGITAL)
: REC(DIGITAL)
R-ch : same as L-ch.