Sony MHC-VX888 (serv.man2) Service Manual ▷ View online
HCD-VX888
36
36
6-16. SCHEMATIC DIAGRAM – POWER AMP/SENSOR Board –
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
(Page 33)
(Page 48)
(Page 33)
(Page 48)
37
37
HCD-VX888
6-17. PRINTED WIRING BOARDS – POWER AMP/SENSOR 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.
• Semiconductor
Location
Ref. No.
Location
D501
B-2
D502
C-2
D503
C-6
D504
C-6
D541
E-3
D543
F-5
D551
B-2
D581
C-5
D941
F-3
IC501
A-5
Q501
C-2
Q503
F-6
Q504
G-6
Q505
C-6
Q506
C-7
Q551
B-2
Q581
C-5
Q831
C-7
Q941
E-3
POWER AMPLIFIER BOARD
SENSOR BOARD
E
E
1
13
1
13
H
MAIN BOARD
CN901
G
MAIN BOARD
CN902
1
3
M
SUB TRANS BOARD
CN976
L
MAIN TRANS BOARD
CN977
1
2
13
E
–
–
~
~
+
+
~
~
E
E
E
E
E
E
(CHASSIS)
(CHASSIS)
1-680-267-
11
(12)
1
2
1-681-143-
11
(11)
B
C
D
E
F
G
A
1
2
3
4
5
6
7
8
CN701
(Page 34)
(Page 34)
(Page 49)
(Page 49)
HCD-VX888
38
38
6-18. SCHEMATIC DIAGRAM – PANEL Board –
•
See page 50 for Waveform.
•
See page 55 for IC Pin Function Description.
•
See page 54 for IC Block Diagram.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
no mark : FM
(Page 40)
(Page 33)
(Page 35)
(Page 40)
39
39
HCD-VX888
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.
6-19. PRINTED WIRING BOARD – PANEL Board –
•
See page 27 for Circuit Boards Location.
FB603
D619
D620
JW713
JW706
JW707
PANEL BOARD
CD
D613, 614
S603
TUNER/BAND
D609, 612
S604
MD (VIDEO)
D617, 618
S601
MAIN BOARD
CN401
TAPE A/B
D615, 616
S602
E
30
29
1
2
1
2
4
3
7
6
PHONES
J631
9
10
1
18
E
E
E
E
1
3
3
2
1
9
1
J
PAD SWITCH BOARD
NO605
S601 – 606
5
1
10
15
20
25
30
35
40
45
50
55
60
66
70
1
30
31
50
51
80
81
100
FLUORESCENT INDICATOR TUBE
1
9
K
CD-SW BOARD
NO603
E
1
4
8
5
E
GAME
VIDEO
AUDIO
GAME INPUT
L
R
D608, S605
MIC2
J722
MIC1
J721
J601
6
5
4
3
7
2
1
1-680-261-
11
(12)
MIC
LEVEL
RV722
SURROUND
SPEAKER MODE
(CHASSIS)
(IA)
(IA)
ECHO
LEVEL
(CHASSIS)
B
C
D
E
F
G
A
1
2
3
4
5
6
7
8
9
10
11
R601
JW752
C708
JW712
JW711
C709
C707
C
VIDEO SWITCH
BOARD
CN607
16
9
1
8
D608
A-10
D609
B-2
D610
A-3
D611
D-6
D612
B-2
D613
A-2
D614
A-2
D615
B-2
D616
B-2
D617
C-2
D618
C-2
D619
C-10
D620
C-10
D705
E-9
Ref. No.
Location
Ref. No.
Location
• Semiconductor Location
IC601
B-6
IC602
F-2
IC603
B-3
IC616
C-3
IC721
E-9
IC722
G-9
Q601
B-2
Q602
A-2
Q603
B-2
Q604
C-2
Q605
A-11
Q721
E-8
(Page 34)
(Page 41)
(Page 41)
(Page 35)
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