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HCD-GT444
Sony HCD-GT444 Service Manual
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HCD-GT1
1
1/GT222/GT444/GT555
HCD-GT1
1
1/GT222/GT444/GT555
49
49
7-29.
SCHEMA
TIC DIAGRAM - TRANS1 Board (GT1
1
1: 120V
AC area in E, 240V AC area in E, Chilean and Peruvian models) -
(2/2)
BOARD
R
NO801
POWERAMP
D
BOARD
NO468
MAIN
(2/4)
-32
-38.3
-32.6
0.7
0.1
250V
F906
T3.15AL
50V
10
C909
25V
1000
C91
1
10k
R952
1k
R904
0.1
C907
JW917
JW907
JW912
JW909
JW905
63V
220
C908
35V
100
C910
4.7k
R915
2SC3052EF-T1-LEF
Q903
JL901
JL906
JL907
JL914
JL915
JL916
JL919
JL921
JL923
JL924
JL926
1
3
4
5
6
7
8
9
2
S901
22k
R912
1
R908
1N4002B
D908
MC2837
D912
MC2837
D91
1
6P
CN903
MA2J1
110GLS0
D901
MAZ8330GMLS0
D906
11
P
CN907
AC4
AC4
AC3
AC3
VF
VF
-VFL
DGND
EVER10V
STBY RELA
Y
AC CUT DETECT
JW933
JW932
JW901
JW925
RY901
1
3
3P
CN901
LIVE
NEUTRAL
JL927
JL928
JL929
JL930
JL931
JL932
JL933
JL934
JL935
250V
F908
T6.3AL
250V
F909
T6.3AL
250V
F907
T2AL
22
R910
0
R91
1
100k
R914
0.1
C926
JW950
C925
1
(CHASSIS)
W901
TRANS1 BOARD
230-240V
220V
120V
VOL
TAGE SELECTOR
RELA
Y DRIVE
8
9
10
11
12
13
14
15
16
17
6
5
4
2
NOT REPLACEABLE:
BUIL
T IN TRANSFORMER
7
D
B
69
1
0
5
3
1
C
E
8
4
A
2
11
AC-VH
AC-VL
GND
GND
AC-VL
AC-VH
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
10
11
2SB1238-PQR-TV2
Q902
-32V REGULA
TOR
∗
∗
(AC IN)
PT902
SUB POWER
TRANSFORMER
TRANSFORMER
MAIN POWER
PT901
(Page 43)
(Page 37)
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
48
50
Table of Contents
Default Chapter
1
Specifications
1
Table of Contents
2
1 Servicing Notes
3
2 General
7
Parts/Controls
7
Hooking up the System Securely
8
Setting the Clock
8
3 Disassembly
9
Disassembly Flow
9
Side-L/R Case
10
Top Panel Block
10
Tape Mechanism Deck
11
Front Panel Block
11
Back Panel
12
MAIN Board
12
CD Mechanism Block
13
POWERAMP Board
13
Base Unit
14
OP Base Assy (KSM-213D)
14
Belt (DLM3A)
15
4 Test Mode
16
5 Mechanical Adjustments
20
6 Electrical Adjustments
21
7 Diagrams
23
Block Diagram - CD SERVO, USB Section
23
Block Diagram - MAIN Section
24
Block Diagram - AMP Section
25
Block Diagram
25
Tel 13942296513
25
BLOCK DIAGRAM - PANEL, POWER SUPPLY Section
26
Schematic Diagram - CD Board (1/2)
28
Schematic Diagram - CD Board (2/2)
29
Printed Wiring Board - CD Board
30
Printed Wiring Board - TC Board
31
Schematic Diagram - TC Board
31
Printed Wiring Board - USB Board
32
Schematic Diagram - USB Board
33
Printed Wiring Boards - REG Section
34
Schematic Diagram - REG Section
34
Printed Wiring Board - MAIN Board
35
Schematic Diagram - MAIN Board (1/4)
36
Schematic Diagram - MAIN Board (2/4)
37
Schematic Diagram - MAIN Board (3/4)
38
Schematic Diagram - MAIN Board (4/4)
39
Printed Wiring Boards - JACK Section
40
Schematic Diagram - JACK Section
40
Printed Wiring Board - POWERAMP Board
41
Schematic Diagram - POWERAMP Board (1/2)
42
Schematic Diagram - POWERAMP Board (2/2)
43
Printed Wiring Board - DISPLAY Board
44
Schematic Diagram - DISPLAY Board
45
Printed Wiring Boards - PANEL Section
46
Schematic Diagram - PANEL Section
47
Printed Wiring Board - TRANS1 Board (GT111: 120V AC Area in E, 240V AC Area in E, Chilean and Peruvian Models)
48
Schematic Diagram - TRANS1 Board (GT111: 120V AC Area in E, 240V AC Area in E, Chilean and Peruvian Models)
49
Printed Wiring Board - TRANS2 Board (GT222/GT444/GT555)
50
Schematic Diagram - TRANS2 Board (GT222/GT444/GT555)
51
Printed Wiring Board - TRANSX Board (GT111: AEP, Russian and Argentina Models)
52
Schematic Diagram - TRANSX Board (GT111: AEP, Russian and Argentina Models)
53
8 Exploded Views
63
Q Q 8-1. Case Section
63
Loading Panel Section
64
DISPLAY Board Section
65
Front Panel Section
66
Meter Display Assy
67
Top Panel Section
68
Back Panel Section
69
MAIN Board Section
70
Chassis Section
71
CD Mechanism Section (CDM88A-K6BD93-WOD)
72
9 Electrical Parts List
73
5
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Sony HCD-GT444 Specifications
General
Brand
Sony
Model
HCD-GT444
Category
Stereo System
Language
English
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