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HCD-GT22/GT44/GT55
39
39
HCD-GT22/GT44/GT55
7-15. SCHEMATIC DIAGRAM – MAIN Section (2/4) –
•
See page 58 for IC Block Diagrams.
9.1
4.7
4
4
4
4
4
4
5.3
4
3.5
8.3
4
0.4
1
4
4
4
4
4
8
4
4
4
4
4
4
0
0
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
0
7.4
3.7
3.7
3.7
3.7
3.7
3.7
0
4.6
4.2
9.1
4.6
1.2
1.8
4
100k
R169
470p
C147
10
R068
E
EP061
22k
R166
47k
R147
22k
R165
0.1
C063
470p
C285
100k
R170
1
2
3
4
5
6
7
8
9
10
11
11P
CN201
A-SOL
A-PHOTE
A-HALF
CAPM+
B-REC-F
M-GND
D-GND
B-PHOTE
B-HALF
NC
B-SOL
1
2
3
4
5
6
7
8
9
10
11
11P
CN202
PB-L
PB-R
A-GND
REC-R
REC-L
REC/PB_SW
+9V
REC-MUTE
0-BIAS
DECK-D-GND
NC
4700p
C268
4700p
C267
2.2k
R202
2.2k
R201
56k
R145
100
R153
100
R151
0.022
C152
6.8k
R125
47k
R160
2200p
C128
1k
R133
4700p
C146
100
R164
2.2k
R119
R129
∗
220
R143
50V
1
C130
10V
100
C168
0.1
C120
220k
R156
0.1
C140
50V
C154
1
50V
10
C126
16V
47
C180
50V
10
C125
50V
10
C109
2SC3052EF
-T1-LEF
Q113
1k
R134
10V
100
C167
R130
∗
1.8k
R140
C158
∗
16V
100
C170
C155
∗
10V
470
C121
100
R122
0.047
C143
2.2k
R124
2200p
C127
50V
1
C138
100p
C171
22k
10k
R136
50V
1
0.022
C151
50V
1
C137
47k
R159
0.01
C122
2.2k
R123
220k
R157
100
R152
15k
R162
2.2k
R138
4700p
C145
C157
∗
47p
C123
0.01
C179
100p
C172
47p
C174
220k
R155
15k
R161
2.2k
R137
2200p
C281
220k
R158
1.8k
R139
220
R144
0.1
C114
50V
1
C129
1M
R163
22k
470p
C160
50V
10
C110
10k
R135
50V
10
C141
47p
C173
100
R131
2.2k
R120
0.022
C149
0.1
C139
50V
10
C142
6.8k
R126
100
R121
C115
470
10V
0.047
C144
R128
18K
R127
18k
4.7k
R101
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
0.022
C150
2SC3052EF-T1-LEF
Q114
C156
∗
220k
R214
50V
2.2
C211
50V
22
C111
4.7k
R113
50V
1
C116
220
R216
47k
R110
2SC3052EF-T1-LEF
Q111
100
R116
50V
0.47
C119
220
R217
50V
0.22
C212
100k
R111
4.7k
R213
470
R112
680
R114
50V
2.2
C118
2.2k
R212
10k
R108
470p
C117
2SC3052EF-T1-LEF
Q112
1
2
3
4
5
6
7
8
9
10
R2S15208SP
1
C164
1
C176
1
C166
1
C178
1
C163
1
C175
1
C165
1
C177
R105
47
47k
R148
R221
4.7k
R222
4.7k
22k
R226
22k
R227
22k
R228
22k
R230
22k
R231
22k
R229
R223
4.7k
R225
4.7k
R224
4.7k
MA111-TX
D214
1
2
3
4
5
6
7
8
9
10
11
12
13
CN061
13P
HP L-OUT
HP-GND
HP R-OUT
HP-GND
AUX-IN-LCH
A-GND
AUX-IN-RCH
D-GND
USB-LED-OUT
LED+9V
MIC-SIG
MIC+9V
O-MIC-DET
MC2837
D213
MC2837
D211
2SC3052EF-T1-LEF
120k
R173
2.2k
R175
16V
47
C182
220k
R174
22k
R232
22k
R234
MC2836
D212
1000p
C064
220k
R215
8.2k
R211
MA111-TX
D159
P-DATA
A-CLK
A-CLK
F-DATA
REC-M
BIAS
REC/PB
HP/MIC
U-OUT
B-REEL
A-REEL
VACS
TAPE-STAT
L+R_SIGNAL
A+9V
STREAM
D-GND
4
5
6
7
9
10
11
12
13
14
16
17
18
19
20
21
23
28
33
32
31
29
30
26
34
MAIN BOARD (2/4)
INPUT SELECTOR,
IC103
IC102
PARAMETRIC
A
10
1
2
J
H
B
13
11
L
C
7
8
I
14
F
9
6
K
4
18
15
16
3
G
D
5
17
E
12
EQUALIZER
(GT55)
∗
R130
56k
GT55:E51,MX,AR
GT22:E3,E13,E51,MX,AR,AUS/
(GT22:E2/GT44:E2/GT55:E2)
GT44:E3,E13,E51,MX,AR,AUS/
27k
(GT55)
(GT55)
(GT22/GT44)
TONE CONTROL,
ELECTRICAL VOLUME
BASS AGC
BASS AGC
∗
C155-158
0.12(GT44/GT55)
0.15(GT22)
(GT44/GT55)
(GT55)
(GT22/GT44)
BUFFER
(GT44/GT55)
Q111,112
BAND-PASS FILTER
(GT55)
27k
∗
R129
GT44:E3,E13,E51,MX,AR,AUS/
56k
(GT22:E2/GT44:E2/GT55:E2)
GT22:E3,E13,E51,MX,AR,AUS/
GT55:E51,MX,AR
(CHASSIS)
THE ASSEMBLED
SUPPLIED WITH
DECK BLOCK
TAPE MECHANISM
BLOCK
3
1
(
)
IC102
R141
R142
C153
Q121
O
M
4P
J701
3
4
1
2
2SC5053T100Q
Q701
UDZW-TE17-4.7B
D703
220k
R701
R702
56k
1k
R703
0.1
C702
C704
0.22
C706
2SC3052EF-T1-LEF
Q702
2.2k
R708
0.47
C707
25V
22
C705
2W
82
R705
33k
R706
8.2k
R709
JL702
JL706
1
2
3
3P
CN701
D-GND
A+9V
L+R SIGNAL
50V
C703
10
220
R710
25V
220
C701
D-LIGHT SYNC BOARD
+4.1V REGULATOR
SYNC OUT
D-LIGHT
BUFFER
BRACKET
A701
GT44:E2,E3,E13,E51,MX,AR/
GT22:E2,E3,E13,E51,MX,AR/
GT55