JBL GX-A604 Service Manual ▷ View online
1
2
3
4
5
6
7
8
A
B
C
D
8
7
6
5
4
3
2
1
D
C
B
A
INPUT SENS
0.2V-4V
power supply
1
2
3
GROUND
REM
+12V
bass boost
45Hz 0-12dB
power
A1
P1
A2
A4
C7
A5
HP ON
HP OFF
A6
1ch(L) -out
2Ω/4Ω
1ch input
Class AB Audio Power Amplifier
input selector
variable crossover
FUSE
P2
HI-IN auto ON
A1
GX-A604
A2
PRT
1
2
3
A
input mode
2ch
4ch
3ch
4ch
A3
switch
1
2
3
4
1&2ch HI IN
A
A1
A2
INPUT SENS
0.2V-4V
B1
B2
B4
B5
HP ON
HP OFF
B6
2ch(R) +out
2Ω/4Ω
2ch input
Class AB Audio Power Amplifier
input selector
variable crossover
A
A2
A1
Pitch 2.5mm
INPUT SENS
0.2V-4V
C1
C2
C4
C5
LP
FLAT
C6
3 ch(L) -out
2Ω/4Ω
3ch(L) input
Class AB Audio Power Amplifier
input selector
variable crossover
1
2
3
4
3&4ch HI IN
A1
A2
A2
Pitch 2.5mm
A
bass boost
45Hz 0-12dB
C7
INPUT SENS
0.2V-4V
C1
C2
C4
C5
LP
FLAT
C6
4 ch(R) +out
2Ω/4Ω
4ch(R) input
Class AB Audio Power Amplifier
input selector
variable crossover
A
A1
A2
3ch
4ch
3
2
1
4
A
7
6
5
8
B
HP
HP
crossover
32/320Hz 12dB/ oct
HP/LP pass
10Hz
320Hz
＞
40 KHz
32Hz
crossover
32/320Hz 12dB/ oct
HP/LP pass
10Hz
320Hz
＞
40KHz
32Hz
crossover
80Hz 12dB/ oct
HP pass
10Hz
＞
40KHz
80Hz
crossover
80Hz 12dB/ oct
HP pass
10Hz
＞
40KHz
80Hz
1
2
3
4
5
6
7
8
A
B
C
D
8
7
6
5
4
3
2
1
D
C
B
A
R5A
4K7
R2A
4K7
4K7
C8A
47P
C4A
10U/50V
R1A
22K
C6A
102P
R4A
4K7
C7A
100P
100P
C2A
100uF/25V NP
R3A
4K7
C3A
10U/50V
R16A
910R
C5A
10U/50V
C25A
100P
R7A
2K
R6A
10K
R5B
4K7
R2B
4K7
C8B
47P
C4B
10U/50V
R1B
22K
C6B
102P
CH2/FR
R4B
4K7
C7B
100P
C2B
100uF/25V NP
R3B
4K7
C3B
10U/50V
R16B
910R
C5B
10U/50V
C25B
100P
R7B
2K
2K
R6B
10K
2
3
1
8
4
U1A
BA4560
+15V-1
-15V-1
6
5
7
U1B
BA4560
2
3
1
8
4
U2A
BA4560
+15V-1
-15V-1
6
5
7
U2B
BA4560
-15V-1
+15V-1
PGND
R5C
4K7
4K7
R2C
4K7
C8C
47P
C4C
10U/50V
R1C
22K
C6C
102P
CH3/RL
R4C
4K7
C7C
100P
C2C
100uF/25V NP
R3C
4K7
C3C
10U/50V
R16C
910R
C5C
10U/50V
C25C
100P
R7C
2K
R6C
10K
R15C
22K
R5D
4K7
R2D
4K7
C8D
47P
C4D
10U/50V
R1D
22K
C6D
102P
CH4/RR
R4D
4K7
C7D
100P
C2D
100uF/25V NP
R3D
4K7
C3D
10U/50V
R16D
910R
C5D
10U/50V
C25D
100P
R7D
2K
R6D
10K
R15D
22K
R13D
0R
2
3
1
8
4
U6A
BA4560
+15V-1
-15V-1
6
5
7
U6B
BA4560
2
3
1
8
4
U7A
BA4560
+15V-1
-15V-1
6
5
7
U7B
BA4560
C36D
823P
R34D
1K
C34D
823P
R36D
43K
C35D
823P
R38D
36K
R35D
43K
R37D
10K
R39D
10K
C36C
823P
R34C
1K
C34C
823P
R36C
43K
C35C
823P
R38C
36K
R35C
43K
43K
R37C
10K
R39C
10K
CH1/FL
FL SG
2
3
1
8
4
U11A
4558
-15V-1
+15V-1
6
5
7
U11B
4558
GND
R20F
13K
13K
R7F
13K
13K
R26
5.6K
R21F
13K
13K
R19F
5.1K
R8F
13K
13K
C5F
10uF/50V
C15F
10uF/50V
C14F
10uF/50V
C6F
10uF/50V
R25
2.2K
2.2K
R18F
2.2K
FL-HI
FL+HI
FR-HI
FR+HI
1
2
C1F
10uF/25V NP
10uF/25V NP
1
2
C13F
10uF/25V NP
R27
68K
R11F
68K
R6F
68K
R12F
68K
1
2
3
4
CN5
130223000018
GX-A604
2
1
RCAA
120203000083
4
3
RCAB
120203000083
6
5
RCAC
120203000083
8
7
RCAD
120203000083
R13C
0R
0R
FL 2CH
RL 4CH
RR 4CH
FR 2CH
R15B
NC
R15A
NC
1
2
3
4
5
6
7
8
9
10
CN1
130253000115
C22
100uF/16V
R2
4.3K
R1
10K
SP REM
R5
56K
R6
56K
R7
56K
R8
56K
RCA PRO
PROT
RCA PROT
+15V
-15V
RL SG
RR SG
FR SG
C3
104P
C1
104P
C5
104P
+15V-1
-15V-1
R20E
13K
R7E
13K
R19E
5.1K
R21E
13K
R24
5.6K
R6E
13K
C2E
10uF/50V
C7E
10uF/50V
C14E
10uF/50V
10uF/50V
C15E
10uF/50V
R22E
2.2K
R18E
2.2K
RL-HI
RL+HI
RR-HI
RR+HI
1
2
C1E
10uF/25V NP
10uF/25V NP
1
2
C13E
10uF/25V NP
R23
68K
R11E
68K
R1E
68K
R12E
68K
1
2
3
4
CN6
130223000018
R3
1K
R4
22K
C6
104P
FL+H
FL-H
FL-H
FL+H
FR+H
FR-H
RR-H
RR+H
RL+H
RL-H
RL-H
RL+H
RR+H
RR-H
FR-H
FR+H
SP REM
Hi auto
Hi auto
Hi auto
Hi auto
Hi auto
R 0dB
4
5
6
SW1B
110103000017
SW1A
110103000017
R8C
1K
R8D
1K
R8A
1K
1
2
R8B
1K
FR 4CH
FL 4CH
1
2
3
VR1A
010703000103
4
5
6
VR1B
010703000103
4
5
6
VR2B
010703000103
1
2
3
VR2A
010703000103
FR SG
FL SG
7
8
9
10
SW1C
110103000040
A
K
D1
1N4148
D2
1N4148
1N4148
RR SG
RX
47K
RX1
47K
47K
RL SG
R31
4.7R
R28
4.7R
R10
4.7R
R11
4.7R
R12
4.7R
R13
4.7R
R14
4.7R
R15
4.7R
R16
4.7R
R17
4.7R
C8
104P
C9
104P
C10
104P
C11
104P
C12
104P
C13
104P
C14
104P
C15
104P
C16
104P
C17
104P
Q1
2SC1815
B
C
E
Q2
2SC1815
4
5
6
SW2B
110103000017
SW2A
110103000017
0dB L
RL3
RR4
FL1
FR2
7
8
9
10
SW2C
110103000040
J11
0R
Q3
NA
R49
0R
R48
0R
C38
10uF/50V
C39
C39
10uF/50V
C40
10uF/50V
C41
C41
10uF/50V
C42
10uF/50V
C43
C43
10uF/50V
C44
10uF/50V
C45
C45
10uF/50V
R40
4.7K
R41
4.7K
R42
4.7K
R43
4.7K
R44
4.7K
R45
4.7K
R46
4.7K
R47
4.7K
1
2
CN7
170103000529
1
2
CN8
1
2
CN9
170103000529
1
2
CN10
J39
6.5
1
2
3
4
5
6
7
8
A
B
C
D
8
7
6
5
4
3
2
1
D
C
B
A
C191
10uF/50V
R131
2K
R144
1K
C137
47uF/25V
Q103
2SC1815
R135
47R
R139
6K8
R134
47R
B
C
E
Q102
2SC1815
E
C
B
Q105
2SA1015
Q104
2SA1015
R137
47R
R136
47R
R138
6K8
+AMP
Q109
2SD669
Q108
MPSA13
C135
104M
R147
3K3
R148
5K6
Q106
2N5401
Q107
2N5551
C131
100P
R146
47R
R149
47R
C132
100P
R156
680R
680R
D101
4148
R159
4K7
Q113
2SC1815
C136
104
D103
1N4148
Q110
2SB649
R157
680R
A
K
D102
1N4148
R160
4K7
R158
4R7/0.25W
C158
NC
C133
47P
R145
15K
R170
1K
R168
10K
R169
1K
R166
4K7
C291
10uF/50V
R231
2K
R244
1K
C237
47uF/25V
B
C
E
Q203
2SC1815
R235
47R
R239
6K8
1
2
R234
47R
B
C
E
Q202
2SC1815
Q205
2SA1015
Q204
2SA1015
R237
47R
R236
47R
R238
6K8
-AMP
Q209
2SD669
Q208
MPSA13
MPSA13
C235
104M
R247
3K3
R248
5K6
Q206
2N5401
Q207
2N5551
C231
100P
R246
47R
R249
47R
C232
100P
R256
680R
680R
A
K
D201
4148
R259
4K7
B
C
E
Q213
2SC1815
C236
104
D203
1N4148
Q210
2SB649
R257
680R
680R
D202
4148
R260
4K7
R258
4R7/0.25W
C258
NC
C233
47P
R245
15K
+VCC
R270
1K
R268
10K
R269
1K
R266
4K7
PROT
-VCC
Q112
B688
Q212
B688
Q211
D718
Q111
D718
R140
220R
R240
220R
8
7
6
5
JK1B
120903000119
C132A
100P
C131A
100P
C231A
100P
C232A
100P
C2
122P
C5
122P
GX-A604
+AMP
-A
M
P
-A
M
P
+A
M
P
PROT
FL+SG
+VCC
-VCC
FL
+
out
FR-out
FR-SG
PROT
-VCC
+VCC
FL+out
FR-out
FR-SG
FL+SG
1
2
3
R255
0.15R/10W
R155
0.15R/10W
J15
17.5
J16
15
15
15
15
15
15
J70
15
1
2
3
4
5
6
7
8
A
B
C
D
8
7
6
5
4
3
2
1
D
C
B
A
R331
2K
R344
1K
C337
47uF/25V
Q303
2SC1815
R335
47R
R339
6K8
+AMP
R334
47R
Q302
2SC1815
Q305
2SA1015
Q304
2SA1015
R337
47R
R336
47R
R338
6K8
-AMP
Q309
2SD669
Q308
MPSA13
C335
104M
R347
3K3
R348
5K6
Q306
2N5401
Q307
2N5551
C331
100P
R346
47R
R349
47R
C332
100P
R356
680R
D301
4148
R359
4K7
Q313
2SC1815
C336
104
D303
1N4148
PROT
Q310
2SB649
R357
680R
D302
4148
R360
4K7
R358
4R7/0.25W
C358
NC
C333
10P
R345
15K
R370
1K
R368
10K
R369
1K
R366
4K7
R431
2K
R444
1K
C437
47uF/25V
B
C
E
Q403
2SC1815
R435
47R
R439
6K8
R434
47R
Q402
2SC1815
E
C
B
Q405
2SA1015
Q404
2SA1015
R437
47R
R436
47R
R438
6K8
Q409
2SD669
Q408
MPSA13
C435
104M
R447
3K3
R448
5K6
Q406
2N5401
B
C
E
Q407
2N5551
C431
100P
R446
47R
R449
47R
C432
100P
R456
680R
D401
4148
R459
4K7
Q413
2SC1815
C436
104
A
K
D403
1N4148
Q410
2SB649
R457
680R
680R
A
K
D402
4148
R460
4K7
R458
4R7/0.25W
C458
NC
C433
10P
R445
15K
+VCC
R470
1K
R468
10K
R469
1K
R466
4K7
RL+out
RR-out
C491
10uF/50V
C391
10uF/50V
-VCC
Q311
D718
Q411
D718
Q102P
2SC1815
Q103P
2SC1815
R158P
5.6K
C142P
220uF/25V
D101P
IN4148
PROT
R332
82K
R132
82K
R232
82K
R432
82K
R340
220R
R440
220R
R23
84.5K
R24
84.5K
C22
220U/25V
R30
6.8K
D25
1N4148
Q17A
2SC1815
Q16
2SC1815
D9
1N4148
R23A
84.5K
R24A
84.5K
84.5K
FL+out
FR-out
RR-out
RL+out
C17
104P
C18
104P
Q312
B688
E
C
B
Q412
B688
4
3
2
1
JK1A
120903000119
PROT
C331A
100P
C332A
100P
C432A
100P
C431A
100P
C4
122P
C3
122P
GX-A604
RR-SG
RL+SG
-A
M
P
+AMP
PROT
-VCC
+VCC
FR-out
FL+out
R1P
10K
R2P
0R
PROT
-VCC
+VCC
FR-out
FL+out
RR-SG
RL+SG
-A
M
P
+A
M
P
R355
0.15R/10W
R455
0.15R/10W
R40
6.2K
6.2K
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