Sony CMT-VC1 / HCD-VC1 Service Manual ▷ View online
HCD-VC1
31
31
5-18. SCHEMATIC DIAGRAM – POWER Board –
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
no mark : FM
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
(Page 22)
HCD-VC1
32
32
• IC Block Diagrams
– CD Board –
– CD Board –
IC701
CXD2545Q
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
92
91
90
89
88
87
86
85
84
83
93
94
95
96
97
98
99
100
SLED PWM
GENERATOR
TRACKING PWM
GENERATOR
FOCUS PWM
GENERATOR
PWM GENERATOR
SERVO DSP
FOCUS
SERVO
TRACKING
SERVO
SLED
SERVO
CLV
PROCESSOR
CPU
INTERFACE
NOISE
SHAPER
18-TIMES
OVER SAMPLING
FILTER
CPU
INTERFACE
CPU
INTERFACE
ADDRESS
GENERATOR
CPU
INTERFACE
PRIORITY
ENCODER
CPU
INTERFACE
ERROR
CORRECTOR
CPU
INTERFACE
TIMING
GENERATOR 2
MIRR
DFCT
FOK DETECTOR
32K RAM
RESISTER
D/A
DIGITAL
PROCESSOR
TIMING
GENERATOR 1
SYNC
PROTECTOR
DIGITAL
OUT
SUBCODE
P-W
PROCESSOR
SUBCODE
Q
PROCESSOR
DIGITAL
PLL
VARI-PITCH
DOUBLE SPEED
CPU
INTERFACE
EFM
DEMODULATOR
SERIAL
PARALLEL
PROCESSOR
CPU
INTERFACE
ASYMMETRY
CORRECTION
1 2 3 4
5 6 7 8 9 10 11
20
19
18
17
16
15
14
13
12
21 22 23
24 25
46
|
50
61 – 51
PEAK
DETECTOR
CLOCK
GENERATOR
MUX
A/D
CONVERTER
SWITCH
&
BUFFER
SERVO
AUTO
SEQUENCER
SERVO
MICRO PROGRAM
INTERFACE
RFC
ADIO
AVSS
IGEN
AVDD
VCKI
VPCO
PDO
TES3
TES2
DVSS
TEST
VCO1
VCO0
SRON
SRDR
SFON
TFDR
TRON
TRDR
TFON
FFDR
FRON
FRDR
FFON
RFDC
TE
SE
FE
VC
FILO
FILI
PCO
CLTV
AVSS
RFAC
BIAS
ASYI
ASYO
AVDD
ADD
ASYE
PSSL
WDCK
LRCK
XTAI
XTAO
XTSL
DVSS
FSTI
FSTO
D OUT
MD2
C16M
C4M
SCOR
WFCK
EMPH
SBSO
EXCK
SQSO
SQCK
MUTE
SENS
XRST
DIRC
SCLK
DFSW
ATSK
DATA
XLAT
CLOK
COUT
ADD
MIRR
DFCT
FOK
FSW
MON
MDP
MDS
LOCK
SSTP
SFDR
4
3
DA01
|
DA11
DA16
|
DA12
26
IC702
BA6392FP-E2
BUFF
BUFF
BUFF
BUFF
R
R
F
F
1
CH1 OUT F
2
CH1 OUT R
3
CAPA IN 1
4
CH1 R IN
5
CH1 F IN
6
VREF IN
7
VREF OUT
8
GND
9
CH2 F IN
10
CH2 R IN
11
CAPA IN 2
12
CH2 OUT R
13
CH2 OUT F
14
GND
28 GND
27 CH4 OUT F
26 CH4 OUT R
25 VB IN
24 VS IN
23 VB IN
22 VCC
21 VCC
20 CH3 F IN
19 CH3 R IN
18 CAPA IN 3
17 CH3 OUT R
16 CH3 OUT F
15 MUTE
LEVEL
SHIFT
INTERFACE
BUFF
BUFF
BUFF
BUFF
R
F
R
F
BUFF
INTERFACE
INTERFACE
F
F
R
R
MUTE
IC703
CXA1821M-T6
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
LD
VCC
VCC
PD
LD ON
A
LC/PD
B
RFE
C
RFO
D
FE
VEE
FE BIAS
F
TE
E
VC
VC
VC BUFFER
TRACKING ERROR AMP
FOCUS ERROR AMP
RF EQ AMP
APC LD AMP
RF SUMMING AMP
EI
EO
VEE
VCC
VCC
VC
VC
VC
VC
VC
VC
VC
VEE
VEE
VEE
VREF
33
HCD-VC1
CH2/A CH2/B
NF
VCC
CG
NF
ALC
METAL
OUT
PRE
OUT
OUT
TAPE A
/TAPE B
REC
OUT
OUT
REC
IN
CH1/A CH1/B
NF
GND1
M/H
NF
CH2
CH2
ALC
M/N
CH1
GND
GND
CH1
+
–
+
–
+
–
+
–
A/B
GND
METAL
OUT
PRE
OUT
OUT
MIX
OUT
REC
OUT
OUT
REC
IN
IREF
VREF2
VREF1
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
THERMAL
SHUTDOWN
BIPOLAR
TRANSCONDACTANCE
INPUT STAGE
STANDBY/
MUTE
BOOST-
STRAP
MOS GAIN &
LEVEL SHIFTING
STAGE
STBY
-GND
IN
–
IN+
IN+ MUTE
NC
BOOSTSTRAP
+VS
–
VS
STBY
MUTE
NC
NC
+PWVS
OUT
–
PWVS
14 15
12
13
10
11
8 9
6
7
5
3
4
1 2
+
–
MOS
OUTPUT
STAGE
SHORT
CIRCUIT
PROTECTION
– MAIN Board –
IC101, 201
TDA7296
GND
OUT1
VCTL
VZ1
VZ2
IN1
IN2
VCC1
VCC2
OUT2
5
6
7
8 9 10
1
2 3
4
DRIVER OUT
PRE DRIVER
LOGIC
SWITCH
TSD
BIAS
IC320
KA3082
– TC Board –
IC401
TA8189N
34
HCD-VC1
6-1. UPPER COVER, TAPE MECH DECK SECTION
SECTION 6
EXPLODED VIEWS
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Hardware (# mark) list and accessories are
given in the last of the electrical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet's Color
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
#3
not supplied
not
supplied
supplied
not supplied
not supplied
not supplied
chassis section
#1
#1
#3
#1
#3
#1
#1
#2
#2
#1
front panel
section
section
6
2
3
4
5
6
not supplied
not supplied
The components identified by
mark 0 or dotted line with mark
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
• Abbreviation
HK : Hong Kong model
MY : Malaysia model
MY : Malaysia model
1
1-796-101-12 DECK, MECH (TAPE)
2
A-4726-690-A TC BOARD, COMPLETE
3
1-757-809-11 CABLE, FLEXIBLE FLAT (9 CORE)
4
1-757-806-11 CABLE, FLEXIBLE FLAT (18 CORE)
5
X-4954-042-1 COVER SUB ASSY, UPPER (SILVER)
5
X-4954-077-1 COVER SUB ASSY, UPPER (BLACK)
5
X-4954-078-1 COVER SUB ASSY, UPPER (RED)
6
4-221-580-01 SCREW, CASE
SP
: Singapore model
TH
: Thailand model
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