Read Sony ICF-CD73 / ICF-CD73V Service Manual online
ICF-CD73/CD73V
17
17
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – CD Section –
A
B
D
F
E
C
I-V AMP
DETECTOR
19
20
17
18
22
SL+
SL–
FCS–
FCS+
TRK+
TRK–
SPINDLE
MOTOR DRIVE
M702
(SPINDLE)
SLED
MOTOR DRIVE
23
M701
(SLED)
FOCUS
COIL DRIVE
TRACKING
COIL DRIVE
SP+
SP–
7
8
9
10
FCS IN
TRK IN
SL IN
SP IN
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE,
POWER CONTROL
IC702
LD
PD
LASER DIODE
OPTICAL PICK-UP
BLOCK
(KSM-900AAA)
2-AXIS
DEVICE
(FOCUS)
(TRACKING)
25
24
REGB
M
M
4
MUTE34
AUTOMATIC
POWER
CONTROL
Q701
8
FIN2 (PD1)
7
FIN1 (PD2)
+
MIX
4
RF
LPF
EQ
PH
BH
10
TIN2 (F)
9
TIN1 (E)
A/D
SW
LPF
TRACK
JUMP
TBAL
80
LDD
APC
AUDIO
ADJUST
SERVO
PROCESSOR
RUPTURE
DETECT
79
LDS
SW
AGC
D/A
13
FE
15
TE
20
TDO
21
FDO
23
SLDO
22
SPDO
S/H
3
EFMIN
SLISE LEVEL
CONTROL
ERROR
CORRECTION
AUDIO CD
RAM
8FS
DIGITAL
FILTER
INTERPOLATION
MUTE
ATTENUATION
DEEMPHASIS
1 BIT
DAC
42
LCHO
RCHO
LPF
DOUT
AUDIO
OUT
FSEQ
PLL
VCEC
CLV, CAV
CONTROL
FRAME SYNC
DETECT,
PROTECT, INSERT,
EFM DECODE
31
RAM
DRF
67
25
CONT4
72
CONT1
66
RES
65
WRQ
61
CE
62
CL
63
DI
64
DO
RF AMP, FOCUS/TRACKING SERVO,
DIGITAL SIGNAL PROCESSOR, CLV SERVO,
DIGITAL FILTER, D/A CONVERTER
IC701
53 CD DATA IN
54 CD DATA
55 CD CLK
56 CD CE
50 WRQ
58 XRST
57 DRF
39 FSEQ
59 CD ON
61
CD OPEN
S551
(CD LID OPEN/CLOSE)
A
SYSTEM
CONTROLLER
IC401
(1/2)
R-CH
GENERAL PURPOSE
PORTS
COMMAND
INTERFACE
INTERFACE
DRF
5
MUTE1
XOUT
XIN
X701
16.9344MHz
CD LCH
PD1
PD2
F
E
LO LD
LO PD
TRK +
TRK –
FCS +
FCS –
When the optical pick-up
is inner position
is inner position
ON :
S701
(LIMIT)
45
39
CLOCK
GENERATOR
48
49
• SIGNAL PATH
: CD PLAY
• R-ch is omitted due to same as L-ch.
MUTING
SWITCH
SWITCH
Q702
DC IN
CD ON
SWITCH
Q703, 704
REGULATOR
30
+3.3V
REGULATOR
Q705
CD +3.3V
PVCC
31
(Page 20)
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