Sony HCD-DX90 / MHC-DX90 Service Manual ▷ View online
HCD-DX90
25
25
7-4. SCHEMATIC DIAGRAM – BD SECTION – • See page 21 for Wavefoms. • See page 42 for IC Block Diagrams.
OPTICAL
PICK-UP
BLOCK
(KSM-213DAP)
MAIN BOARD (3/3)
CN201
TP
(XPCK)
TP
(VC)
TP
(RFO)
TP
(FEO)
TP
(TEO)
TP
(AGCCON)
TP
(FE1)
(Page 29)
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD STOP
no mark : CD STOP
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
HCD-DX90
26
26
IC951
G-7
IC961
H-7
Q101
D-7
Q102
D-6
Q103
I-8
Q141
D-5
Q151
D-7
Q152
D-6
Q153
I-8
Q301
I-5
Q302
I-5
Q303
I-5
Q304
H-5
Q305
H-6
Q391
E-2
Q392
D-2
Q393
E-3
Q394
D-2
Q395
E-3
Q396
E-3
Q397
D-2
Q501
B-5
Q503
D-4
Q504
D-4
Q505
D-4
Q601
C-10
Q602
A-11
Q611
D-10
Q612
D-10
Q821
H-11
Q822
H-11
Q823
G-11
Q824
H-11
Q825
G-11
Q828
G-11
Q829
G-11
Q861
I-9
Q862
H-11
Q863
H-10
Q891
G-11
Q892
G-11
Q911
D-9
Q912
D-9
D501
B-5
D502
B-5
D503
B-5
D504
B-4
D505
B-5
D506
B-5
D511
D-2
D601
C-10
D641
D-12
D651
C-9
D801
I-11
D822
G-11
D824
F-10
D841
H-11
D861
I-9
D891
I-12
D892
I-12
D901
H-10
D902
I-9
D903
H-10
D904
H-9
D906
I-10
D907
I-10
D908
I-10
D909
I-10
D910
J-7
D911
I-7
D952
G-7
D953
G-7
IC101
E-8
IC102
D-6
IC104
C-7
IC201
B-12
IC301
G-5
IC302
H-4
IC303
F-3
IC304
H-3
IC401
C-3
IC501
B-5
IC601
C-11
IC651
B-10
IC911
C-8
IC921
H-8
IC931
H-6
A
PANEL BOARD
CN601
H
LEAF SW BOARD
CN1001
I
HEAD (A) BOARD
CN1
81
80
51
50
31
30
1
100
1
E
3
K
DRIVER BOARD
CN701
E
BD BOARD
CN101
4
1
1
E
E
3
5
8
4
1
5
8
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
1
3
(FOR ADJUSTMENT)
4
5
8
1
4
1
1
8
1
1
9
3
5
8
J
HEAD (B) BOARD
CN2
E
E
E
E
6
4
1
3
3
1
3
1
3
1
3
1
21
1
22
42
8
5
4
1
1
1
1
3
5
4
1
3
5
4
3
5
4
3
E
E
E
7
6
5
1
1
2
3
4
A
K
K
K
A
2
3
4
8
1
12
13
4
5
14
11
10
15
6
7
9
2
2
3
3
3
1
1
E
E
E
E
E
E
E
E
E
E
E
E
E
4
6
3
5
1
2
1
13
1
13
POWER AMP BOARD
CN503
B
POWER AMP BOARD
CN502
C
1-676-194-
(CHASSIS)
26
R (+)
L (+)
R (–)
L (–)
SPEAKER
TM801
MD/VIDEO
(AUDIO)
FM 75
Ω
COAXIAL
M
M961
(FAN)
(FAN)
AM
ANTENNA
CD DIGITAL OUT
OPTICAL
TM601
MAIN BOARD
A
B
C
D
E
F
G
H
I
J
1
2
3
4
5
6
7
8
9
10
11
12
13
E
7-5. PRINTED WIRING BOARD – MAIN SECTION – • See page 21 for Circuit Boards Location.
Ref. No. Location
Ref. No. Location
• Semiconductor Location
(Page 32)
(Page 34)
(Page 34)
(Page 34)
(Page 30)
(Page 30)
(Page 36)
(Page 24)
HCD-DX90
27
27
7-6. SCHEMATIC DIAGRAM – MAIN (1/3) SECTION – • See page 43 for IC Block Diagrams.
RV611
FM TUNED
LEVEL
T601
NULL
330
470
470
220p
MAIN BOARD (3/3)
100p
(Page 29)
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
no mark : FM
(
) : AM
HCD-DX90
28
28
7-7. SCHEMATIC DIAGRAM – MAIN (2/3) SECTION – • See page 21 for Wavefoms. • See page 44 for IC Block Diagrams. • See page 34 for Printed Wiring Board of Head Boards.
RV304
REC BIAS
(L-CH)
RV354
REC BIAS
(R-CH)
RV353
PLAYBACK LEVEL
(DECK B R-CH)
RV303
PLAYBACK LEVEL
(DECK B L-CH)
RV352
PLAYBACK LEVEL
(DECK A R-CH)
RV302
PLAYBACK LEVEL
(DECK A L-CH)
RV351
REC LEVEL
(R-CH)
RV301
REC LEVEL
(L-CH)
N
4.7k
4.7k
C395 0.1
C354
0.1
0.1
C304
0.1
0.1
2 . 2
2 . 2
22k
100
100
100
470
470
470
100
100
100
100
100
100
100
100
100
1
2
2
3
TAPE MECHANISM
DECK BLOCK (2/3)
DECK BLOCK (2/3)
(TCM-230PWR11)
TAPE MECHANISM
DECK BLOCK (3/3)
DECK BLOCK (3/3)
(TCM-230PWR11)
ERASE
5.6k
MAIN BOARD (3/3)
12K
12K
4.7K
8.2K
4.7k
1.2k
18k
18k
8.2k
4.7k
LEAF SW BOARD
CN1001
MAIN BOARD (3/3)
47k
22k
MAIN BOARD (3/3)
MAIN BOARD (3/3)
MAIN BOARD (3/3)
(Page 29)
(Page 29)
(Page 29)
(Page 29)
(Page 29)
(Page 35)
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD STOP
(
no mark : CD STOP
(
) : REC
<
> : TAPE PB
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
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