Sony MHC-VX888 (serv.man2) Service Manual ▷ View online
31
31
HCD-VX888
6-9.
SCHEMATIC DIAGRAM – MAIN Board (2/4) –
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
(
no mark : FM
(
) : TAPE
[
] : CD
(Page 44)
(Page 43)
(Page 32)
(Page 35)
(Page 30)
(Page 33)
HCD-VX888
32
32
6-10. SCHEMATIC DIAGRAM – MAIN (3/4)/HEAD Board –
•
See page 50 for Waveforms.
•
See page 51 for IC Block Diagrams.
•
See page 35 for Printed Wiring Board of Head Boards.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
no mark : FM
(
) : TAPE
[
] : CD
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
(Page 31)
(Page 33)
33
33
HCD-VX888
6-11. SCHEMATIC DIAGRAM – MAIN Board (4/4) –
•
See page 50 for Waveforms.
•
See page 55 for IC Pin Function Description.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
no mark : FM
(
) : TAPE
[
] : CD
(Page
31)
(Page
32)
(Page 42)
(Page 38)
(Page 36)
(Page 36)
HCD-VX888
34
34
6-12. PRINTED WIRING BOARD – MAIN Board –
•
See page 27 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
Ref. No.
Location
• Semiconductor Location
D51
A-12
D507
B-5
D508
C-2
D509
D-4
D510
E-4
D511
C-2
D512
B-5
D575
E-4
D576
E-4
D577
D-4
D578
E-4
D579
D-4
D580
D-4
D801
I-12
D822
G-11
D824
G-11
D841
I-12
D861
I-9
D892
H-13
D893
H-13
D901
I-10
D902
I-10
D903
I-10
D904
I-10
D906
H-10
D907
I-10
D908
I-10
D909
I-11
D910
J-7
D911
I-7
D912
G-10
D920
H-7
D921
H-7
D922
H-7
D952
H-7
D953
H-7
IC11
D-12
IC51
A-11
IC101
E-8
IC102
D-6
IC103
C-6
IC104
C-7
IC105
E-9
IC201
B-13
IC301
G-6
IC302
H-5
IC303
F-4
IC304
H-4
IC501
C-3
IC502
E-4
MAIN BOARD
E
PANEL BOARD
CN601
Q
VIDEO SWITCH
BOARD
CN403
F
LEAF SW BOARD
CN1001
31
50
51
80
81
100
30
1
E
E
E
E
E
E
E
E
3
1
O
HEAD (A) BOARD
CN1
P
HEAD (B) BOARD
CN2
8
1
3
1
2
3
1
2
1
9
1
3
2
E
E
E
E
6
4
1
3
E
1
3
2
E
E
E
E
E
E
1
3
2
1
3
(FOR ADJUSTMENT)
E
E
E
E
E
13
1
13
1
3
1
3
1
3
1
G
POWER AMPLIFIER BOARD
CN503
H
POWER AMPLIFIER BOARD
CN502
22
21
42
1
E
3
1
E
E
B
E
E
1
2
3
E
E
E
E
E
E
E
E
E
E
E
E
E
E
1
4
8
5
1
13
2
12
1
2
3
1
2
3
4
FE1
FE2
FM FRONT-END
1
2
3
E
A
DRIVER BOARD
CN701
B
VIDEO BOARD
CN502
OPTICAL
CD DIGITAL OUT
SYSTEM
CONTROL
FM 75
Ω
COAXIAL
ANTENNA
AM
R
L
CN101
MD/VIDEO
(AUDIO)
J101
TO SATELLITE AMPLIFIER
(TA-DX80)
+
+
–
–
TM1
IN
L
R
L
R
SPEAKER
RB41
AM FRONT-END
AM FRONT-END
M
M961
(FAN)
(FAN)
TM801
IMPEDANCE
USE 6~16
Ω
1
3
2
(CHASSIS)
(EA)
8
1
16
9
12
13
(EXCEPT E91)
(E91)
1-680-268-
11
(11)
B
C
D
E
F
G
H
I
J
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
JR39
(FOR CHECK)
IC701
F-12
IC911
C-8
IC921
H-8
IC951
H-7
IC961
H-8
Q1
C-11
Q2
A-12
Q11
D-11
Q12
D-11
Q101
D-7
Q102
D-6
Q103
I-8
Q104
E-9
Q141
E-5
Q151
D-7
Q152
D-6
Q153
I-8
Q301
I-5
Q302
I-4
Q303
I-5
Q304
I-5
Q305
I-6
Q391
E-2
Q392
E-2
Q393
E-3
Q394
E-2
Q395
E-2
Q396
E-3
Q397
E-2
Q503
E-6
Q504
F-7
Q505
F-8
Q575
E-4
Q821
G-11
Q822
G-12
Q823
G-12
Q824
H-12
Q825
H-12
Q828
G-11
Q829
G-11
Q831
H-12
Q832
H-12
Q861
I-9
Q862
H-11
Q863
H-11
Q891
G-12
Q892
H-13
Q911
C-9
Q912
C-10
(Page 43)
(Page 47)
(Page
39)
(Page 35)
(Page 42)
(Page 35)
(Page 35)
(Page 37)
(Page 37)
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