JBL GTO-504EZ Service Manual ▷ View online
8
7
6
5
J6B
JSZ8P-26A
FL+IN
R131A
1K
R167A
10K
MUTE
R144A
1K
C137A
100uF/16V
Q103A
BC850C
R135A
47R
R139A
5K6
+15V
R134A
47R
Q102A
BC850C
Q105A
BC860C
Q104A
BC860C
R137A
47R
R136A
47R
R138A
5K6
-15V
Q109A
2SD669
Q108A
BC850C
C135A
104
R147A
4K7
R148A
2K7
Q106A
2SA1514K
Q107A
2SC3906K
C131A
101
R146A
220R
R149A
220R
C132A
101
R165A
0.15/5W
R156A
680R
D101A
IN4148
R159A
6K8
Q113A
2SC1815
C136A
105
D103A
1N4148
PROT
Q110A
2SB649
R155A
0.15/5W
R157A
680R
D102A
IN4148
R160A
6K8
R158A
4R7
C158A
CM104
C133A
47P
R145A
4K7
R151A
100R
+VCC
M114A
K117
R170A
1K5
R168A
10K
R169A
1K5
R166A
3K6
-VCC
Q112A
KTB778
Q111A
KTD998
R140A
100R
C141A
10uF/25V
C143A
391
C144A
391
C142A
101
C192A
10uF/25V
FR-IN
R131B
1K
R167B
10K
MUTE
R144B
1K
C137B
100uF/16V
Q103B
BC850C
R135B
47R
R139B
5K6
+15V
R134B
47R
Q102B
BC850C
Q105B
BC860C
Q104B
BC860C
R137B
47R
R136B
47R
R138B
5K6
-15V
Q109B
2SD669
Q108B
BC850C
C135B
104
R147B
4K7
R148B
2K7
Q106B
2SA1514K
Q107B
2SC3906K
C131B
101
R146B
220R
R149B
220R
C132B
101
R165B
0.15/5W
R156B
680R
D101B
IN4148
R159B
6K8
Q113B
2SC1815
C136B
105
D103B
1N4148
PROT
Q110B
2SB649
R155B
0.15/5W
R157B
680R
D102B
IN4148
R160B
6K8
R158B
4R7
C158B
CM104
C133B
47P
R145B
4K7
R151B
100R
+VCC
M114B
K117
R170B
1K5
R168B
10K
R169B
1K5
R166B
3K6
-VCC
Q112B
KTB778
Q111B
KTD998
R140B
100R
C141B
10uF/50V
C143B
391
C144B
391
C142B
101
C192B
10uF/50V
R132A
4K7
D104A
1N4148
FLS
R132B
4K7
D104B
1N4148
FRS
C193B
105
C194B
105
C193A
105
C194A
105
FL+Out
FR-Out
R133A
100K
100K
R133B
100K
100K
C138B
10uF/35V
C138A
10uF/35V
TP52
TP53
TP54
TP55
TP56
TP57
R130B
1K
R129B
1K
R130A
1K
R129A
1K
GTO-504EZ
29
RL+IN
R131C
1K
R167C
10K
MUTE
R144C
1K
C137C
100uF/16V
Q103C
BC850C
R135C
47R
R139C
5K6
+15V
R134C
47R
Q102C
BC850C
Q105C
BC860C
Q104C
BC860C
R137C
47R
R136C
47R
R138C
5K6
-15V
Q109C
2SD669
Q108C
BC850C
C135C
104
R147C
4K7
R148C
2K7
Q106C
2SA1514K
Q107C
2SC3906K
C131C
101
R146C
220R
R149C
220R
C132C
101
R165C
0.15/5W
R156C
680R
D101C
IN4148
R159C
6K8
Q113C
2SC1815
C136C
105
D103C
1N4148
PROT
Q110C
2SB649
R155C
0.15/5W
R157C
680R
D102C
IN4148
R160C
6K8
R158C
4R7
C158C
CM104
C133C
47P
R145C
4K7
R151C
100R
+VCC
M114C
K117
R170C
1K5
R168C
10K
R169C
1K5
R166C
3K6
RLS
-VCC
Q112C
KTB778
Q111C
KTD998
R140C
100R
C141C
10uF/50V
C143C
391
C144C
391
C142C
101
C192C
10uF/50V
RR-IN
R131D
1K
R167D
10K
MUTE
R144D
1K
C137D
100uF/16V
Q103D
BC850C
R135D
47R
R139D
5K6
+15V
R134D
47R
Q102D
BC850C
Q105D
BC860C
Q104D
BC860C
R137D
47R
R136D
47R
R138D
5K6
-15V
Q109D
2SD669
Q108D
BC850C
C135D
104
R147D
4K7
R148D
2K7
Q106D
2SA1514K
Q107D
2SC3906K
C131D
101
R146D
220R
R149D
220R
C132D
101
R165D
0.15/5W
R156D
680R
D101D
IN4148
R159D
6K8
Q113D
2SC1815
C136D
105
D103D
1N4148
PROT
Q110D
2SB649
R155D
0.15/5W
R157D
680R
D102D
IN4148
R160D
6K8
R158D
4R7
C158D
CM104
C133D
47P
R145D
4K7
R151D
100R
+VCC
M114D
K117
R170D
1K5
R168D
10K
R169D
1K5
R166D
3K6
RRS
-VCC
Q112D
KTB778
Q111D
KTD998
R140D
100R
C141D
10uF/25V
C143D
391
C144D
391
C142D
101
C192D
10uF/25V
R136
56K
R140
56K
C15
NP100U/25V
R127
4K3
Q24
2N5551
Q23
2N5551
R131
56K
R135
R135
56K
FL+Out
FR-Out
RR-Out
RL+Out
PROT
R123
56K
R124
56K
C14
NP100U/25V
R115
10K
Q22
2N5551
Q21
2N5551
R119
56K
R120
56K
FL+Out
FR-Out
RR-Out
RL+Out
PROT
D13
1N4148
D12
1N4148
R132D
4K7
D104D
1N4148
R132C
4K7
D104C
1N4148
C193D
105
C194D
105
C193C
105
C194C
105
4
3
2
1
J6A
JSZ8P-26A
RL+Out
RR-Out
R121
10K
R122
10K
R133C
100K
100K
R133D
100K
C138D
10uF/35V
C138C
10uF/35V
TP48
TP49
TP50
TP51
TP58
TP59
R130D
1K
R129D
1K
R130C
1K
R129C
1K
GTO-504EZ
30
3
2
1
U3A
TL072
R38A
1K
R40A
0R
R39A
NC
NC
FL+IN
3
2
1
U5A
TL072
R3A
10K
R5A
30K
ć
PTC1A
330R
R6A
1K
R4A
10K
10K
R39B
10K
R40B
10K
6
5
7
U3B
TL072
FR-IN
R3B
10K
R5B
30K
ć
PTC1B
330R
R6B
1K
6
5
7
U5B
TL072
R4B
10K
10K
R38C
1K
R40C
0R
R39C
NC
NC
3
2
1
U4A
TL072
RL+IN
3
2
1
U6A
TL072
R3C
10K
R5C
30K
ć
PTC1C
330R
R6C
1K
R4C
10K
10K
6
5
7
U4B
TL072
R39D
10K
R40D
10K
RR-IN
R3D
10K
R5D
30K
ć
PTC1D
330R
R6D
1K
R4D
10K
10K
6
5
7
U6B
TL072
FLI
FRI
RLII
RRII
6
5
7
U2TB
LM393
R22T
11K
11K
R23T
10K
10K
R21T
2K2
C13T
220uF/16V
R11T
15K
15K
R12T
47K
R19T
2.7M
R20T
22K
P+12V1
D5T
1N4148
C12T
2.2uF/50V
R37T
1K
R16T
100K
R18T
2K2
2K2
Q3T
2SA1015
Q4T
2SC1815
D4T
1N4148
SG-ON
5
6
7
U1TB
TL072
C1T
104
R1T 200K
A1
R8T
200K
200K
R6T
200K
3
2
1
U1TA
TL072
C8T
101
101
VCC/2
C7T
101
C4T
104
C3T
104
R4T
200K
R7T 200K
A3
A4
R10T
15K
C11T
474
R14T
1K5
VCC/2
R15T
680K
C10T
12PF
C9T
474
R29T
10K
R30T
10K
C14T
220uF/16V
P+12V2
VCC/2
R28T
0R
0R
Q6T
2SC1815
R27T
0R
R26T
10K
10K
R25T
1K
C16T
47uF/25V
D6T
1N4148
REM
Q5T
2SC1815
8
4
U2TC
LM393
8
4
U1TC
TL072
C17T
NC
D1T
1N4148
1N4148
D8T
1N4148
1N4148
R31T
10K
R17T
2K2
Q9T
2SA1015
2SA1015
R33T
15K
R34T
4K7
P
+
12V
2
Q8T
2SC1815
R35T
6K8
R36T
10K
D7T
1N4148
C2T
104
R2T 200K
A2
C18T
NC
NC
Q7T
2SC1815
C19T
106
R32T
6K8
1
3
5
7
9
11
2
4
6
8
10
12
J5B
CON2*6P
FLI
RLII
FL+IN
RL+IN
FRI
RRII
FR-IN
RR-IN
1
3
5
7
9
11
2
4
6
8
10
12
13
14
J4B
CON2*7P
REM
PGND
A2
+15V
P+12V1
SG-ON
-15V
A1
A4
A3
8
4
U4C
TL072
8
4
U5C
TL072
+15V
-15V
C20C
104
C21E
104
C11E
104
C10E
104
8
4
U6C
TL072
8
4
U3C
TL072
C22E
104
C23C
104
C25C
104
C24C
104
C15T
104
C26C
104
C1A
56pF
C1B
56pF
56pF
C1C
56pF
C1D
56pF
56pF
C5T
104
C6T
47uF/25V
R3T
10R
R9T
10R
P+12V2
GTO-504EZ
31
R49S
1K
LED3S
Green
+15VS
Q9S
S8050
R47S
100K
R22S
1K
FLS
R4S
10K
R11S
30K
R18S
1K
R30S
10K
R1S
10K
R3S
10K
LED5S
RED
R34S
2K7
FRS
R2S
10K
R29S
10K
R19S
1K
R9S
30
K
D1S
IN4148
Q1S
2SC1815
+15VS
LED1S
Orange
R41S
47K
R45S
2K2
5
6
7
8
4
U1SB
LM393
3
2
1
U1SA
LM393
R33S
2K7
VL1
VH1
Q5S
2SA1015
R36S
2K7
D2S
IN4148
Q2S
2SC1815
+15VS
R42S
47K
R35S
2K7
Q6S
2SA1015
R17S
1K
R10S
30
K
R12S
30K
R20S
1K
R21S
1K
R50S
1K
LED4S
Green
+15VS
Q10S
S8050
R48S
100K
R28S
1K
RLS
R8S
10K
R15S
30K
R25S
1K
R32S
10K
R5S
10K
R7S
10K
LED6S
RED
R38S
2K7
RRS
R6S
10K
R31S
10K
R26S
1K
R13S
30
K
D3S
IN4148
Q3S
2SC1815
+15VS
LED2S
Orange
R43S
47K
R46S
2K2
5
6
7
8
4
U2SB
LM393
3
2
1
U2SA
LM393
R37S
2K7
VL2
VH2
Q7S
2SA1015
R40S
2K7
D4S
IN4148
Q4S
2SC1815
+15VS
R44S
47K
R39S
2K7
Q8S
2SA1015
R23S
1K
R14S
30
K
R16S
30K
R24S
1K
R27S
1K
C1S
104
C2S
104
104
C3S
104
C4S
104
C5S
104
C6S
104
104
R51S
20K
R53S
649R
R52S
825R
+15VS
VL1
VH1
D5S
IN4148
D6S
IN4148
R55S
1M3
R54S
10K
D7S
IN4148
R56S
10K
D8S
IN4148
R57S
1M3
R58S
20K
+15VS
FRS
FLS
RRS
RLS
1
1
3
3
2
2
4
5
6
7
J10B
CON7P-2.0
R61S
20K
R60S
649R
R62S
825R
+15VS
VL2
VH2
R59S
20K
GTO-504EZ
32