Sony HCD-DX90 / MHC-DX90 Service Manual ▷ View online
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.
HCD-DX90
29
29
BD BOARD
CN101
DRIVER BOARD
CN701
POWER AMP BOARD
CN503
POWER AMP BOARD
CN502
TA7807S
M5F7809L
25V
10V
JR908
JR909
32
33
C212
1000P
1000P
3.3k
C824
4.7k
D824
1SS355
1SS355
R830
4.7k
4.7k
R901
100
100
25V
10V
MAIN BOARD (2/3)
MAIN BOARD (2/3)
MAIN BOARD (2/3)
MAIN BOARD (2/3)
MAIN BOARD (2/3)
PANEL BOARD
CN601
MAIN BOARD (1/3)
47k
Q891, 892
FAN DRIVE
M961
7-8. SCHEMATIC DIAGRAM – MAIN (3/3) SECTION –
(Page 28)
(Page 28)
(Page 37)
(Page 25)
(Page 27)
(Page 31)
(Page 31)
(Page 28)
(Page 33)
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD STOP
(
no mark : CD STOP
(
) : REC
<
> : TAPE PB
(Page 28)
(Page 28)
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