Sony HCD-GX20 / MHC-GX20 Service Manual ▷ View online
29
29
HCD-GX20
5-10. Schematic Diagram – MAIN Section (4/4) –
4.0
0
0
0
0
0
12
11.8
0
0
0
0.7
11.9
11.9
11.1
4.8
4
4.4
4.4
4.4
4.4
4
0.7
0.7
0
0
0
5.6
4.4
4.4
4.4
4.4
0.7
0
0
0
0
0
0
6.6
1.2
1.9
0.7
0.7
5.8
1.5
2.1
30
31
32
33
34
35
35
36
37
38
38
39
40
41
41
42
43
44
45
43
44
45
46
47
48
TO
MAIN BOARD
(2/4)
TO
MAIN BOARD
(3/4)
49 50
51
52 53 54
55
58596061626364656671 67 69 70
80
74 75 76 77 78 79
MAIN BOARD
(4/4)
7
9
+
+
-
-
SPEAKER
TO
PANEL
BOARD
BOARD
CN691
E
(Page 31)
TO
POWER
BOARD
CN503
D
(Page 33)
SWIITCH
Q331,332
MUTE
Q315,316
MUTE
Q313,314
MUTE CONT
Q809,810
PROTECT DETECT
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
SWITCH
SWITCH
SWITCH
JK303
CN403
30
30
HCD-GX20
5-11. Printed Wiring Boards – PANEL Section –
• See page 19 for Circuit Boards Location.
IC601
IC602
RM601
PANEL BOARD
KEY BOARD BOARD
REM BOARD
VIDEO OUT
BOARD
A
TO
CD
CD
BOARD
CN733
(Page 22)
CD
CD
TUNER/BAND
TUNER/BAND
TAPE A/B
TAPE A/B
GAME
VIDEO
PHONES
MOVIE EQ
MUSIC EQ
GAME EQ
DISPLAY
EFECT ON/OFF
GROOVE
CD SYNC
REC
PAUSE/START
GAME
MIXING
GAME
MIXING
VOLUME
DISC 3
DISC 2
DISC 1
OPEN/
CLOSE
DISC SKIP/
EX-CHANGE
AUDIO
GAME INPUT
VIDEO OUT
GAME
L
R
1-684-297-
11
(11)
1-684-305-
11
(11)
1-684-299-
11
(11)
1-684-298-
11
(11)
C
TO
MAIN
BOARD
CN603
(Page 25)
E
TO
MAIN
BOARD
CN303
(Page 25)
1
30
31
50
51
80
81
100
+
-
E
3
1
1
2
A
B
C
D
E
F
3
4
5
6
7
8
9
10
Ref. No.
Location
D601
C-3
D602
C-5
D603
A-4
D604
A-4
D606
A-4
D608
B-2
D611
D-2
D612
D-2
D613
D-2
D614
D-2
D615
C-4
D616
C-4
D617
C-4
D618
C-6
IC601
B-4
IC602
D-4
LED610
B-7
LED611
C-7
LED612
B-7
LED614
B-7
LED615
E-5
LED616
A-7
Q601
C-5
RM601
F-8
• Semiconductor
Location
31
31
HCD-GX20
5-12. Schematic Diagram – PANEL Section –
• See page 36 for IC Pin Function Description.
• See page 19 for Waveforms.
-23.8
0
0
0
0
5.1
0
0
0
5
5
5
5
0.3<4.9>
4.9<0.4>
5
4.3
0.2
No mark:FM
< >:CD(stop)
< >:CD(stop)
5
5
-23.8
-23.8
-23.8
-23.8
-23.8
-23.6
-23.6
-23.6
-23.6
-23.6
-14.9
-12.4
-12.5
-25
4.9
-20
-17.5
-22.5
-25.1
-25.4
-15
-22.5
-25.2
-22.5
-17.5
-15
-17.5
-17.5
-15
-17.5
-25.2
-25.2
-25.3
-20.2
0
0
0
0
0.2
4.9
0
0
0
4.6
4.8
4.8
4.8
4.9
-1.5
0
5.1
5
5.1
5.1
5.1
5.1
0.3
0.4
0.9
5.1
5.1
4.9
2.7
2.4
2.5
2.2
4.9
5
0
4.9
4.9
0
0
0
4.9
4.9
4.9
-23.8
5.1
4.8
0
5.1
5.1
4.9
3
2
FLD601
IC601
LC876662W
JK691
CN601
CN602
100
KEY BOARD BOARD
PANEL BOARD
REM BOARD
VIDEO OUT
BOARD
GAME MIXING
GAME MIXING
+
/START
SEL2410G
TO
MAIN BOARD(4/4)
CN303
E
(Page 29)
PHONES
JK602
VIDEO
OUT
AUDIO
JK681
VIDEO
GAME
INPUT
TO
MAIN BOARD
(2/4)
CN603
C
(Page 27)
TO
CD BOARD
CN733
A
(Page 24)
SEL2110R
SEL2810D-C
SEL2810D-C
SEL2810D-C
SEL2810D-C
A/B
/BAND
IC601
SYSTEM CONTROL
IC602
RESET
RM601
REMOTE CONTROL
RECEIVER
OPEN/CLOSE
VOLUME
EX-CHANGE
NJL64H00A-1
BUFFER
10K
10K
4.7M
J
32
32
HCD-GX20
5-13. Printed Wiring Boards – POWER/TRANS Section –
• See page 19 for Circuit Boards Location.
IC901
IC501
SUB TRANS BOARD
TRANS BOARD
POWER BOARD
F
TO
MAIN BOARD
CN402
(Page 25)
D
TO
MAIN BOARD
CN403
(Page 25)
1-684-302-
11
(11)
1-684-301-
11
(11)
1-684-300-
11
(11)
AC
IN
F919
E
1
2
POWER
TRANSFORMER
(SUB)
POWER TRANSFORMER
(MAIN)
E
1
3
1
1
3
2
3
E
E
E
E
E
1
2
A
B
C
D
E
F
3
4
5
6
7
8
9
Ref. No.
Location
• Semiconductor Location
Ref. No.
Location
D501
B-8
D502
C-8
D541
B-9
D542
D-7
D543
D-7
D551
C-8
D901
B-4
D902
C-3
D903
C-3
D904
C-3
D905
C-3
D911
E-5
D912
E-5
D913
F-6
IC501
C-7
IC901
C-4
Q501
B-8
Q503
B-8
Q504
C-8
Q551
C-8
Q581
B-7
Q901
C-4
Q911
F-5
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