JBL ESC 550 Source (serv.man4) Service Manual ▷ View online
1 0
Powered Subwoofer
BASS550
REF. NO.
PART NO.
DESCRIPTION
QTY
R31, 32
RS1715
SMD 5.6K
Ω
5% 1/8W
2
R36
RS1912
SMD 11.3K
Ω
5% 1/8W
1
R37, 39, 40
RS1767
SMD 1M
Ω
5% 1/8W
3
R42
RS1702
SMD 100K
Ω
1% 1/8W
1
R46, 47
RS2180
M/O 470
Ω
5% 1W
2
Thermistor
TH1
TH1006
NTC 10KW @ 2 5DegC
1
Transistors
Q1, 1A
TR1057
NPN POWER TIP35CTO-218
2
Q2, 2A
TR1061
PNP POWER TIP36 TO-218
2
Q3, 3A
TR1183
NPN POWER TIP31 TO220
2
Q4, 4A
TR1184
PNP POWER TIP32 TO220
2
Q5, 5A, 8, 8A,
TR1166
PNP 2N5401 TO-92 T/R
7
13, 13A, 15
Q6, 6A, 7, 7A,
TR1167
NPN 2N5551 TO-92 T/R
5
14
Q9, 95
TR1063
NPN MPS2222A TO-92
2
Q10, 10A, 11,
TR1108
SMD NPN 2SC2412K CP PKG
4
11A
Q12, 12A
TR1131
SMD NPN DTC1124TK 10K CP
2
Wires
JW1-5
WI1623
#16 SOLID UL1569 GREEN
8
JW6, 9, 10, 11
WI1553
#22 BARE SOLID TINNED
4
0.66 FOOT
Miscellaneous (See Exploded View)
1
BR1187
Alum. Bar 4.8x12.7x40mm
4
2
BR1386
Transistor Bar TO-218
2
3
BR1395
Bracket Power Support
6
REF. NO.
PART NO.
DESCRIPTION
QTY
4
BR1411
Bracket Support 60 Deg
1
5
BR1421
Bracket "L" 0.9"x0.9"
1
6
BR1423
Front Plate
1
7
BR1495
Alum.Bar
1
8
SEE FUSES
9
FH1002
Fuse Holder 1/4x1-1/4
1
10
XX1174
AG AC Cord 6ft.UL/CSA aprov.120V
1
WI1597
AG AC Cord 6ft.UL/CSA aprov.230V
11
HS1142
1
12
MI1151
AG Power Transformer 120V
1
m1159
AG Power Transformer 230V
1
13
ST1025
Round Spacer 1/2x3/8 length
6
14
SW1075
JR Switch Rocker 2P2T Snap-I
1
15
XX1259
Knob Black (not shown)
1
16
XX1269
Gasket
1
17
XX1276
Plastic Cover
1
18
NU1059
Nut 4-40 Keps-Thr.Hexag.Zinc
2
19
NU1057
Nut 6-32 Keps Zinc Hexag.2
20
NU1049
Nut 8-32x1/4 Keps Hexag.5
21
WA1049
Washer Ext.Tooth #6 Zinc
10
22
WA1080
Washer Flat #8 Steel Zinc
5
23
XX1250
Strain Relief SPT-1 Black
1
24
SC1253
Screw 4-40x3/8 Pan Phillips
2
25
SC1274
Screw 5-20x1/4 Thread Form.Z.
6
26
SC1192
Screw 6-32x3/4 Cutt-Thr.Hex.
8
27
SC1194
Screw 6-32x3/8 Tapt-Thr Hex.17
28
SC1282
Screw 10-32x7/8 Pan-Torx Hd.6
29
SP1073
Sil Pad TO-3P 1/0"x0.75"
12
30
SP1072
Sil Pad TO-220 0.750"
3
31
ST1024
1/4 Hex Fem.Standoff 1-1
2
32
332630-001
13 Pin Interconnect Cable
1
Revisions
Date
Revision
Change Description
Reason of Change
1/29/97
01
A) Changed R6, A, C from 27K to 24.3K 1% on PCB1164.
B) Changed R6B from 27K to 15K on PCB1164.
C) Changed R5, A, C from 2.7K to 4.32K 1% on PCB1164.
D) Changed R5B from 2.7K to 7.5K on PCb1164.
B) Changed R6B from 27K to 15K on PCB1164.
C) Changed R5, A, C from 2.7K to 4.32K 1% on PCB1164.
D) Changed R5B from 2.7K to 7.5K on PCb1164.
Changes required by Engineering
2/5/97
02
A) Changed R33, R34, R35 from 10K 5% to 10K 1% on (2)
PCB1165 & PCB1166.
B) Changed R36 from 11K 5% to 11.3K 1% on (2) PCB1165
& PCB1166.
Changes required by Engineering
3/3/97
03
A) Identified Polarity Power Cord.
3/11/97
04
A) Changed R7 from 4.7K to 10K on PCB1164.
B) Changed R26 from 10K to 4.7K on PCB1164.
C) Changed R30 from 1K to 2.2K on PCB1164.
D) Changed R31 from 470 to 220 on PCB1164.
E) Delete JW9, JW10, JW11 on PCB1163.
F) Add F3, F4, F5 on JW9, JW10, JW11 on PCB1163.
G) Changed R1 from 1K to 15K on PCB1163.
H) Delete R2 and Add ZD1, 10V in the same place on PC1163.
B) Changed R26 from 10K to 4.7K on PCB1164.
C) Changed R30 from 1K to 2.2K on PCB1164.
D) Changed R31 from 470 to 220 on PCB1164.
E) Delete JW9, JW10, JW11 on PCB1163.
F) Add F3, F4, F5 on JW9, JW10, JW11 on PCB1163.
G) Changed R1 from 1K to 15K on PCB1163.
H) Delete R2 and Add ZD1, 10V in the same place on PC1163.
I) Add C26, C27 of 0.01
µ
F 100V on PCB1163.
J) Add C22, C23, C24, C25 from 4700
ρ
F on PCB1164
(Speaker Out).
A, B, C, D= Power On Sensitivity.
E, F = Protection On Voltage.
G, H = POP On Power Off.
1 0
Revisions
Date
Revision
Change Description
Reason of Change
1/29/97
01
A) Changed R6, A, C from 27K to 24.3K 1% on PCB1164.
B) Changed R6B from 27K to 15K on PCB1164.
C) Changed R5, A, C from 2.7K to 4.32K 1% on PCB1164.
D) Changed R5B from 2.7K to 7.5K on PCb1164.
B) Changed R6B from 27K to 15K on PCB1164.
C) Changed R5, A, C from 2.7K to 4.32K 1% on PCB1164.
D) Changed R5B from 2.7K to 7.5K on PCb1164.
Changes required by Engineering
2/5/97
02
A) Changed R33, R34, R35 from 10K 5% to 10K 1% on (2)
PCB1165 & PCB1166.
B) Changed R36 from 11K 5% to 11.3K 1% on (2) PCB1165
& PCB1166.
Changes required by Engineering
3/3/97
03
A) Identified Polarity Power Cord.
3/11/97
04
A) Changed R7 from 4.7K to 10K on PCB1164.
B) Changed R26 from 10K to 4.7K on PCB1164.
C) Changed R30 from 1K to 2.2K on PCB1164.
D) Changed R31 from 470 to 220 on PCB1164.
E) Delete JW9, JW10, JW11 on PCB1163.
F) Add F3, F4, F5 on JW9, JW10, JW11 on PCB1163.
G) Changed R1 from 1K to 15K on PCB1163.
H) Delete R2 and Add ZD1, 10V in the same place on PC1163.
B) Changed R26 from 10K to 4.7K on PCB1164.
C) Changed R30 from 1K to 2.2K on PCB1164.
D) Changed R31 from 470 to 220 on PCB1164.
E) Delete JW9, JW10, JW11 on PCB1163.
F) Add F3, F4, F5 on JW9, JW10, JW11 on PCB1163.
G) Changed R1 from 1K to 15K on PCB1163.
H) Delete R2 and Add ZD1, 10V in the same place on PC1163.
I) Add C26, C27 of 0.01
µ
F 100V on PCB1163.
J) Add C22, C23, C24, C25 from 4700
ρ
F on PCB1164
(Speaker Out).
A, B, C, D= Power On Sensitivity.
E, F = Protection On Voltage.
G, H = POP On Power Off.
1 1
Powered Subwoofer
BASS550
PRINTED CIRCUIT BOARDS 1 (TOP VIEW)
1 2
Powered Subwoofer
BASS550
PRINTED CIRCUIT BOARDS 1 (BOTTOM VIEW)
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