Sony HCD-DX80 Service Manual ▷ View online
42
42
HCD-DX80
6-21. SCHEMATIC DIAGRAM – MAIN TRANS/SUB TRANS Board –
(Page 32)
(Page 32)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
no mark : FM
43
43
HCD-DX80
6-22. PRINTED WIRING BOARDS – MAIN TRANS/SUB TRANS Board –
• See page 23 for Circuit Boards Location.
There are a few cases that the part printed on
this diagram isn’t mounted in this model.
this diagram isn’t mounted in this model.
Ref. No.
Location
D971
F-7
D972
F-8
D973
F-8
D974
F-7
D975
F-7
D977
F-1
IC971
F-8
Q971
G-8
• Semiconductor
Location
4
1
L
POWER AMPLIFIER BOARD
NO501
1-680-265-
11
(11)
T910
POWER TRANS FORMER
(MX)
(EXCEPT MX)
SUB TRANS BOARD
MAIN TRANS BOARD
AC IN
(MX)
VOLTAGE SELECTOR
S901
230 – 240V
220V
110V
(EXCEPT BR)
(EXCEPT MX)
(MX)
T972
POWER TRANSFORMER
1
3
3
1
E
M
POWER AMPLIFIER
BOARD
CN504
1-680-266-
11
(11)
TO
SATELLITE AMPLIFIER
(TA-DX80)
(MX)
*
*
NOT REPLACEABLE
BUILT IN TRANSFORMER
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
(Page 33)
(Page 33)
44
44
HCD-DX80
• IC Block Diagrams
– BD Board –
IC101
CXD3017Q
IC102
BA5974FM-E2
1
2
3
10 11 12 13 14 15 16 17 18
19
20
60
59 58 57
56
55
54
52
51
50
49
48
47
46 45 44
53
21
39
40
41
42
43
22
23
79
24
26
25
28
27
29
30
31
32
35
36
37
38
33
34
80
62
61
77
78
78
75
76
76
73
74
72
71
70
69
66
65
64
63
68
67
4
5
6
7
8
9
D/A
Interface
Digital
PLL
CPU
Interface
Digital
OUT
Serial-In
Interface
Over Sampling
Digital Filter
Timing
Logic
PWM
3rd-Order
Noise Shaper
PWM
Asymmetry
Corrector
A/D
Converter
OP Amp
Analog SW
Clock
Generator
Digital
CLV
MIRR
DFCT
FOK
SERVO DSP
FOCUS
SERVO
SERVO
TRACKING
SERVO
SELED
SERVO
EFM
Demodurator
Servo Auto
Sequencer
SERVO
Interface
Error
Corrector
16K
RAM
Sub Code
Processor
PWM
GENERATOR
FOCUS PWM
GENERATOR
TRACKING
PWM
GENERATOR
SLED PWM
GENERATOR
SQSO
SQCK
XRST
DATA
XLAT
CLOK
SENS
SCLK
VDD
SPOA
SPOB
XLON
XPCK
SCOR
COUT
MIRR
DFCT
FOK
LOCK
MDP
SSTP
SFDR
SRDR
TFDR
TRDR
FFDR
FRDR
TEST
TES1
VC
FE
SE
TE
CE
RFDC
ADIO
IGEN
ASYO
ASYI
BIAS
RFAC
CLTV
FILO
FILI
PCO
DOUT
XTAI
XTAO
AVDD1
AOUT1
AIN1
LOUT1
LOUT2
AIN2
AOUT2
LMUT
XVSS
RMUT
SYSM
ATSK
WFCK
XUGF
GFS
C2PO
VSS
XTSL
AVDD
AVSS
AVSS
AVDD
VSS
VDD
LRCK
PCMD
BCK
EMPH
XVDD
AVSS1
AVSS2
AVDD2
LEVEL SHIFT
INTERFACE
INTERFACE
INTERFACE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
21
22
23
24
25
26
27
28
19
18
17
16
15
F
R
R
F
F
R
R
F
R
R
F
F
MUTE
THERMAL
SHUTDOWN
VREFOUT
VREFIN
POWVCC
CH1FIN
CH1RIN
CH2FIN
CH2RIN
CH2OUTR
CH2OUTF
CH1OUTR
CH1OUTF
CAP
AIN1
CAP
AIN2
GND
PRFVCC
MUTE
POWVCC
CH4SIN'
CH4SIN
CH4BIN
CH3FIN
CH3RIN
CH3OUTR
CH3OUTF
CH4OUTR
CH4OUTF
CAP
AIN3
GND
IC103
CXA2581N-T4
RW/ROM
RW/ROM
EQ ON/OFF
VOFST
VOFST
DVC
VC
VC
VC
RW/ROM
VC
DVC
30
29
28
+
–
+
–
DVC
VCC
DVC
27
26
25
24
RW/ROM
EQ
23
22
21
20
19
RFAC
VCA
VCC
+
–
DVC
+
–
+
–
RW/ROM
VC
RW/ROM
DVC
+
–
3
A
B
C
D
B
C
C
A
A
A
B
C
C
D
B
C D
D
+
–
1
2
APC AMP
5
6
7
8
9
4
RFAC
SUMMING
AMP
RW/ROM
APC-OFF
(Hi-Z)
RW/ROM
(H/L)
VOFST
VC
RW/ROM
+
–
10
11
GM
GM
18
17
16
B
D
A
C
13
14
15
12
EQ IN
LD
PD
GND
A
B
C
D
AC SUM
E
F
DVCC
DVC
RFAC
SW
DC OFST
RFDCI
RFDCO
VC
RFC
VFC
BST
RFG
VCC
CEI
CE
TE BAL
TE
FEI
FE
45
HCD-DX80
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
21
22
23
24
S-CURVE
AM/FM
IF
BUFF
COMP
TUNING
DRIVE
AM
OSC
OSC
AM
MIX
MIX
AM
PF.AMP
PF.AMP
AGC
AM
IF
AM
DET
DET
BUFF
LEVEL
DET
FM
IF
FM
DET
REG
GND
DEOODER
ANTI-BIRDIE
P-DET
ø
PILOT
CANCEL
STEREO
SW
VCO
304kHz
FF
38k
FF
19k
π
2
FF
19k
0
PILOT
DET
V
CC
ALC
PHASE
DETECTOR
CHARGE PUMP
SWALLOW COUNTER
1/16, 1/17 4BITS
12BITS
PROGRAMMABLE
DRIVER
UNIVERSAL
COUNTER
REFERENCE
DIVIDER
POWER
ON
RESET
1/2
CCB
INTERFACE
1
2 3 4 5
6 7 8 9
16
15
14
13
12
11
10
17
18
19
20
XOUT
VSS
AOUT
AIN
PD
VDD
FMIN
AMIN
XIN
DO
CL
DI
CE
IFIN
IO1
BO4
BO3
BO2
BO1
IO2
UNLOCK
DETECTOR
DATA SHIFT REGISTER LATCH
1
5
2
4
3
6
7
8
SELECT A
SELECT B
3
2
1
0
3
2
1
0
INH
Y1
Y3
Y
Y1
Y0
VEE
VSS
X3
X0
X
X1
X2
VDD
A
B
9
12
14
15
11
16
13
10
IC11
LA1845
IC51
LC72131
IC105
BU4052BCF-E2
IC302
µ
PC1330HA
1
2
3
4
5
6
7
8
9
INVERTER
COMPARATER
SW R1
GND
SW P1 CONT
GND
VCC
SW P2 GND
SW R2
– MAIN Board –
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