U
V
X
Z
AB
AD
W
Y
AA
AC
2
1
3
5
7
4
6
Y09-4610-10
G-EQ300
-B LINE
+B LINE
-55.6V
6.7V
-6.7V
5.0V
5.0V
-6.7V
6.7V
-15.1V
15.3V
15.3V
-15.1V
MUTE OFF
MUTE ON
0V
13.5V
:
:
14.8V
:
: -14.9V
9.8V
MUTE ON
NOR
-15.1V
15.3V
0V
0V
0V
0V
-41.3V
-6.6V
-6.0V
-55.48V
-6.7V
15.3V
0V
:
:
4.5V
0V
MUTE OFF
MUTE ON
15.3V
-15.1V
-15.1V
-26.0V
6.7V
5.0V
15.3V
24.3V
C
G-EQ300(M) (2/2)
B
A
IC104
IC106
IC102
IC103
IC107
IC105
IC101
MAIN PCB
-42V
120V
AC110-
AC220-
240V
1
2
3
4
5
3
2
1
SW101
SW101
SW101
SW101
250V T1.6A
SW101
250V T1.6A
250V T1.6A
250V T1.6A
F102
F102
F102
2
1
2
1
2
1
2
1
POWER
2
1
-B
+B
SIGNAL LINE
GND LINE
-15.1V
+15.3V
+6.7V
-15.1V
-15.1V
+15.3V
+15.3V
-15.1V
-15.1V
+15.3V
-15.1V
-15.1V
+15.3V
+15.3V
+15.3V
+15.3V
-15.1V
+15.3V
-15.1V
+15.3V
-15.1V
+15.3V
+15.3V
+15.3V
-15.1V
-15.1V
+14.9V
-15.1V
-15.1V
+15.3V
+15.3V
+15.3V
-15.1V
-6.7V
+6.7V
+5V
+5V
+5V
+6.7V
-6.7V
-6.7V
-15.1V
+15.3V
+6.7V
+15.3V
+15.3V
+15.3V
-15.1V
-6.7V
+5V
+6.7V
-6.7V
+6.7V
+6.7V
+5V
-6.7V
-15.1V
+5V
50Hz
AC240V
2
2
1
1
SW101
C220
4700P
SW101
4700P
C220
C112
0.01
100K
R141
C220
C220
C220
C220
110-120/
330P
C189
330P
C188
330P
C187
1/4W
FR102
3.3
T301
POWER
TRANSFORMER
T301
POWER
TRANSFORMER
T301
POWER
TRANSFORMER
T301
POWER
TRANSFORMER
T301
POWER
TRANSFORMER
T301
+6.7V
SW101
AC
C
AC
250V T1.6A
+5V
-15.1V
+
C201
33u50
0.5uH
L103
GND
OUT IN
680
FR147
R148
+
C195 4.7u100
R153
100K
+
C202
10u50
2.7K
R156
C203
470u63
C204 0.01
100K
R149
39K
R150
R151
4.7K
4.7K
R152
+
C205
100u63
+
FR101 4.7 1/4W
+
C206 47u50
7.5K
220P
C214
220P
C215
SW101
4700P
13
16
17
13
15
50/60Hz
230-240V
2
2
1
1
F102
SW102
SW101
4700P
1000u35
R143 560
R144 560
R142 560
560
R122
R121
560
560
R120
C218
100u16
IN
OUT
GND
0.01
C199
+
C197
60Hz
AC120V
2
2
1
1
TRANSFORMER
50Hz
AC220V
2
2
1
1
SW101
4700P
4700P
SW101
F102
1
1
2
2
AC230V
50Hz
50Hz
AV230V
2
2
1
1
17
16
C114 0.01
C113 0.01
R128 1.2K
16
17
13
13
16
17
13
C211
8
3
2
+
-
1
R117
4.7K
R118
4.7K
R137
100
C209
1u100
+
100K
R139
220P
C217
1u100
7
4
6
5
+
-
C210
220P
R140
100K
+
1u100
C208
100
R138
C196
100u16
0.01
C191
FR146
680
FR154 390 2W
FR155 390 2W
+
+
100u16
C194
C192
FR145
680
100u16
+
+
1000u35
C198
+
C200
0.01
100u16
C219
+
C193
0.01
560
560
47K
+
-
-
+
560
47K
-
+
47K
560
560
47K
+
-
-
+
47K
560
47K
+
-
VE
GND
VD
10K
10K
16
15
VCC
VEE
DI
S
19
18
17
VSS
CLK
TEST1
TEST2
FR1
FL1
25
22
FL3
FR3
FR2
20
FL2
FR4
21
FL4
FL6
FR6
FR5
23
FL5
FR7
24
FL7
IN2R
26
IN2L
NC
IN1R
27
VDD
IN1L
28
14
13
12
10
11
4
7
9
8
6
5
3
2
1
0.043
C120
C118
0.056
0.082
C122
C124
0.068
0.1
C126
C128
0.15
0.18
C130
C132
0.22
0.27
C134
C136
0.33
0.68
C144
C140
0.56
220P
C138
100K
R124
820K x 7
AR102
47K
560
+
-
-
+
47K
R127 1.2K
1
7
4
2
3
5
6
8
9
10
20
14
17
19
18
16
15
13
12
11
220u16
C207
+
100K
R119
+
16
13
15
16
C111
330P
330P
C109
C110
330P
C154
0.022
0.033
C150
C152
0.027
10K
10K
VD
GND
VE
-
+
47K
560
47K
+
-
-
+
47K
560
560
47K
+
-
47K
560
+
-
-
+
47K
560
560
47K
+
-
-
+
560
47K
11
12
13
15
16
18
19
17
14
20
10
9
8
6
5
3
2
4
7
1
AR104
820K x 7
+
C116 4.7u100
C166
5600P
7500P
C164
C162
8200P
0.01
C160
C158
0.015
0.018
C156
4300P
C168
C170 4.7u100
+
C172 4.7u100
+
C176 4.7u100
+
C174
R130
47K
820K
R134
C146 0.82
C142 0.47
C182 2200P
C186 3300P
C185 3300P
C181 2200P
C141 0.47
C145 0.82
R133
820K
47K
R129
C175
+
C173 4.7u100
+
C171 4.7u100
+
C169 4.7u100
220P
R135
11K
C177
220P
2700P
C183
C179
1800P
R131
11K
820K
R125
+
C147
4.7u100
C115 4.7u100
+
820K x 7
AR103
1
7
4
2
3
5
6
8
9
10
20
14
17
19
18
16
15
13
12
11
47K
560
+
-
-
+
1800P
C180
C184
2700P
220P
C178
11K
R136
220P
4.7u100
C148
+
R126
820K
11K
R132
560
47K
-
+
47K
560
560
47K
+
-
-
+
47K
560
47K
+
-
VE
GND
VD
10K
10K
0.027
C151
C149
0.033
0.022
C153
C155
0.018
0.015
C157
C159
0.01
8200P
C161
C163
7500P
5600P
C165
C167
4300P
AR101
820K x 7
R123
100K
C137
220P
0.56
C139
C143
0.68
0.33
C135
C133
0.27
0.22
C131
C129
0.18
0.15
C127
C125
0.1
0.068
C123
C121
0.082
0.056
C117
C119
0.043
1
2
-42V
3
4
B+
B-
GND
7305 CLK
7305 DI
7311 ST
7311 CK
7305 S
1
2
3
4
5
7
8
9
R OUT
MUTE
10
11
SYSCON
SYSCON
L OUT
6
7311 DA
1
2
3
5
6
8
9
7
4
11
10
12
13
14
28
IN1L
VDD
27
IN1R
NC
IN2L
26
IN2R
FL7
24
FR7
FL5
23
FR5
FR6
FL6
FL4
21
FR4
FL2
20
FR2
FR3
FL3
22
25
FL1
FR1
TEST2
TEST1
CLK
VSS
17
18
19
S
DI
VEE
VCC
15
16
10K
10K
VD
GND
VE
-
+
47K
560
47K
+
-
-
+
47K
560
560
47K
+
-
47K
560
+
-
-
+
47K
560
560
47K
+
-
-
+
560
47K
11
12
13
15
16
18
19
17
14
20
10
9
8
6
5
3
2
4
7
1
28
27
26
24
23
21
20
22
25
18
19
17
16
15
1
VDD
2
VSS
3
5
6
8
9
7
4
12
11
10
DATA
ST
CK
GND
14
13
470
R109
C105
220P
R111
820K
820K
R112
220P
C106
R110
470
1.5K
R114
C108
220P
R116
470K
470K
R115
220P
C107
R113
1.5K
1.5K
R105
C103
470P
R107
47K
47K
R108
470P
C104
47K
560
560
47K
+
-
-
+
R106
1.5K
470
R102
C102
220P
R104
820K
820K
R103
220P
C101
R101
470
)
(
)
(
)
(
)
(
)
(
(
)
(
)
(
(
)
)
(
(
)
(
)
)
(
)
(
)
(
)
(
)
(
)
)
(
TAPE
1/2
DISPLAY PCB
-W305
C
W306
W103
MAIN
POWER
MAIN
POWER
MAIN
POWER
MAIN
POWER
MAIN
POWER
W102
W102
W102
W102
W102
W101
(X) TYPE
A0102
UNSWITCHED
AC OUTLET
F103
IC110
IC109
(BOTTOM VIEW)
(BOTTOM VIEW)
(BOTTOM
VIEW)
VIEW)
(BOTTOM
(BOTTOM VIEW)
(BOTTOM VIEW)
W305
POWER
MAIN
: NJM7815FA
IC109
: NJU7305L
IC104,105
: M5229P
IC102,103,106,107
: NJU7311AL
IC101
AVR
-42V
AVR
-15V
AVR
15V
MUTE
MUTE CONTROL
Q101
Q104
Rch
Lch
D101
D102
-W302
DISPLAY PCB
DISPLAY PCB
1/2
1/2
-W301
Lch
Rch
BUFFER
D108-117
: 1SS131
ZD102
MTZJ5.1B
:
ZD103
MTZJ6.2B
:
:
:
:
KTB1366Y
DTC124ES
KTC2878
Q103
Q104
Q105,106
D101-107,118,119
: MTZJ6.8B
ZD101,104
1N4002A
:
: 2SA933S
Q102
: DTA124TS
Q101
:
: NJM4565DD
IC108
: NJM7915FA
IC110
D107
D110
D111
D108
D109
D106
ZD103
D112
D113
D114
D115
A
Q103
Q102
CONTROL
SYSTEM
AC OUTLET
UNSWITCHED
A0101
W101
W101
D118
D119
(M,Y) TYPE
AC OUTLET
UNSWITCHED
A0101
D117
D116
(K.P) TYPE
AC OUTLET
UNSWITCHED
A0101
W101
(C) TYPE
AC OUTLET
UNSWITCHED
A0101
W101
W101
A0101
UNSWITCHED
AC OUTLET
(E) TYPE
(T) TYPE
IC108(1/2)
JACK103
Q106
Q105
IC108(2/2)
ZD102
ZD101
ZD104
D105
D104
D103
B
E.Q ELECTRIC
VOL.IC
E.Q IC
E.Q
IC
IC
E.Q
E.Q IC
VOL.IC
E.Q ELECTRIC
SELECTOR
INPUT
CN101
CN102
JACK102
JACK101
L
R
LINE IN
LINE OUT
R
L
L
R
REC OUT
PLAY IN
R
L
CAUTION: For continued safety, replace safety critical components only with
manufacturer's recommended parts (refer to parts list). indicates safety critical
components. For continued protection against risk of fire, replace only with same type
and rating fuse(s). To reduce the risk of electric shock, leakage-current or resistance
measurements shall be carried out (exposed parts are acceptably insulated from the
supply circuit) before the appliance is returned to the customer.
The DC voltage is an actual reading measured with a high
impedance type voltmeter. The measurement value may vary
depending on the measuring instruments used or on the product.
G-EQ300(K)
PCB/SD.INT
97.11.27
7:29
AM
y [ W
5
Summary of Contents for G-EQ300
Page 4: ... EQ300 PARTS DESCRIPTIONS ...