JBL SCS 120 Sub Service Manual ▷ View online
8
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MECHANICAL PARTS LIST
REF. NO.
PART NO.
DESCRIPTION
QTY
1
BR1187
ALUM. BAR 4.8mmx12.7mmx40m
2
BR1387
ALUMINUM BAR 1.9"x0.5"x0.1
1
2
HS1102
HEAT SINK ASSY.
1
3
FH1002
FUSE HOLDER 1/4x1-1/4 (120V)
1
FH1003
FUSE HOLDER 5x20mm (230V)
1
4
SEE FUSES
5
LB1269
LABEL FOR HEATSINK (120V)
1
LB1298
LABLE FOR HEATSINK (230V)
1
7
MS1004
SILICONE GREASE #340 DOW
8
PM1366
GASKET FOR BASS20
1
9
TE1125
TERMINAL ULTRA FAST INS.
9
10
WI1637
WIRE #18 BLUE/WHITE TRACER
3"
11
SC1192
Sc 6-32x7/8 TAPT-THR HEX W
2
12
WA1049
WASHER EXT. TOOTH #6 ZINC
6
13
XX1250
STRAIN RELIEF SPT-1 BLACK
1
15
SC1215
SCREW M3x1.25x10 plas-Thr Pan
5
17
XX1174
AC CORD. 6FT UL/CSA APRO. (120V) 1
WI1597
AC CORD. 6FT UL/CSA APRO. (230V) 1
18
SP1020
SIL. FOAM 3/8"Lx1/4"Wx3/16
2
19
SP1073
SIL PAD TO-3P 1.0"x0.75"
4
20
XX1257
COVER PLASTIC
1
21
XX1259
KNOB BLACK CUSTOM
1
22
WA1032
WASHER PLAIN #6 ZINC FINISH
4
23
SC1194
Sc 6-32x3/8 TAPT-THR HEX
4
331364-001
GASKET
1
61868
Sc #8x3/4" Blk Pan Head Phillips
12
305718-001
FOOT
4
63868
INSERT THREADED (for foot)
332246-001
SUBWOOFER
2
900101-016
SCREW #8x1" Blk Pan Head
8
C01076
RCA JACK DUAL GOLD RED/WHT
1
C01256
JACK SPEAKER QUAD PC
2
CT, LINE 1
TE1175
TRMNL MALE TAB 0.32"x0.25" PI
3
LINE 2
ELECTRICAL PARTS LIST
Capacitors
C1, C2
CP1635
CAP ALUM EL 4700uF 20% 63v
2
C3, 20
CP1473
CAP CERAMIC 220 pF 50V P
2
C4, 24, 30
CP1415
CAP ALUM EL. 2.2uF 20% 50V P
6
31, 32, 33
C5
CP1439
SMD CAP 33nF 10% 100V X7R PI
1
C7
CP1633
CAP CERAMIC 0.033uF 5% 50 PI
1
C8, 10, 13
CP1552
SMD CAP 0.1uF 20% 100V Z5U P
3
C9, 12, 27, 29 CP1417
CAP ALUM EL. 22uF 20% 16V P
4
C11
CP1178
CAP POLY FILM 22nF 5% 63V P
1
REF. NO.
PART NO.
DESCRIPTION
QTY
C14, 16
CP1426
SMD CAP 0.1uF 20% 50V Z5U P
2
C15
CP1479
SMD CAP 3300pF 10% 100V X PI
1
C19, 28
CP1645
CAP AL EL 22uF 20% 63V 85 PI
2
C21
CP1478
SMD CAP 330pF 5% 100V NPO P
1
C22
CP1475
SMD CAP 33pF 5% 50V NPO 12 P
1
C23
CP1411
CAP ALUM EL. 100uF 20% 16V P
1
C1P
CP1426
SMD CAP 0.1uF 20% 50V Z5U P
1
C2P, C3P
CP1480
SMD CAP 470pF 5% 100V NPO
2
C4P
CP1552
SMD CAP 0.1uF 20% 100V Z5U P
1
C5P, 6, 17
CP1579
33
µ
F 16V NPE
3
CX
CP1808
0.1
µ
F 250V
1
CX1, CX2,
CP1844
0.01
µ
F 200V SMD
4
CX3, CX4
Diodes
CR1, 2, 3, 4
DI1005
1N5401 DIODE 3A/200V P
4
D1, 2, 3, 4, 5 DI1132
SMD DIODE 1N4148 LL-34 PKG T P 5
Z1, 2
DI1150
SMD ZENER 15V 5% CP PKG T P
2
Fuses
F1 (120V)
870-0052
FUSE Fast Blow 5A 250V 3AG
1
F1 (230V)
870-0017
FUSE Fast Blow 2A 250V 3AG
1
F2
FS1073
FAST BLOW 8A 250V ACG
1
(early versions)
F2
312004
FAST BLOW 4A 250V ACG
2
(later versions)
Integrated Circuits
IC1, 2, 3,
IC1041
IC SMD DUAL J-FET NJM072B
5
4, 5
OP AMP
Resistors
J1, 2, 3, 4, 5, RS1779
SMD RES ZERO
Ω
JUMPER 12 P
8
6, 7, 10
P1
RS1794
POT, 50K
Ω
20% LOG TAPER
1
R1, 2, 4, 5,
RS1702
SMD RES 100K
Ω
5% 1/8W 12 P
8
24, 42,
57, 58
R3, 8, 14, 18 RS1701
SMD RES 10K
Ω
5% 1/8W 120 P
15
21, 23, 27,
32, 38, 39,
45, 50, 52,
53, 54
R6, 7, 31, 48 RS1700
SMD RES 1K
Ω
5% 1/8W 12 P
4
R9, 10
RS1720
SMD RES 200K
Ω
1% 1/8W 1 PI
2
R11
RS1872
SMD RES 51K
Ω
5% 1/8W 120 P
1
R12
RS2101
SMD RES 24K
Ω
5% 1/8W 120 PI
1
R13, 15
RS1704
SMD RES 22K
Ω
5% 1/8W 120 P
2
R16, 49
RS1715
SMD RES 5.6K
Ω
5% 1/8W 1 P
2
R17
RS1883
SMD RES 1.5K
Ω
5% 1/8W 12 P
1
R19
RS1878
SMD RES 10
Ω
5% 1/8W 120 P
1
R20, 40
RS1829
SMD RES 160
Ω
5% 1/8W 12 P
2
R22, 33, 34
RS1705
SMD RES 4.7K
Ω
5% 1/8W 12 P
3
R25
RS1831
SMD RES 7.5K
Ω
5% 1/8W T/ P
1
BASS 20 PARTS LIST
9
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REF. NO.
PART NO.
DESCRIPTION
QTY
R26, 28
RS1717
SMD RES 100
Ω
5% 1/8W 12 P
2
R29
RS1716
SMD RES 33.2K 1% 1/8W 120 P
1
R30
RS1711
SMD RES 220
Ω
5% 1/8W 12 P
1
R35
RS1912
SMD RES 11K
Ω
5% 1/8W 120 P
1
R36, 41
RS2180
470W 1W (early versions: 1K 1W)
2
R37
RS1703
SMD RES 2.2K
Ω
5% 1/8W 12 P
1
R43, 44
RS1968
SMD RES 2.2M
Ω
5% 1/8W 12 P
2
R47, 55
RS1767
SMD RES 1 M
Ω
5% 1/8W 120 P
2
R51
RS1793
SMD RES 475K 1% 1/8W 12 P
1
R56
RS1722
SMD RES 470
Ω
5% 1/8W 12 P
1
R1P, 1AP, 2P RS1868
RES. W/W 0.1
Ω
5% 5W RAD P
4
2AP
R3P, R7P
RS1994
RES. 100
Ω
, 5%, 1/4W, C/F, T/R
2
R5P, R6P
RS1916
RES. C/F 5.1
Ω
5% 1/4W T/ P
2
Transistors
Q1
TR1135
TRANSISTOR PNP 2N5401
1
Q2
TR1108
TRANSISTOR 2SC2412 SMD NPN
1
Q4
TR1134
TRANSISTOR 2N5551 NPN
1
Q5
TR1167
TRANSISTOR 2N5551 NPN
1
Q6
TR1131
TRANSISTOR DTC114TK SMD NPN 1
Q7
TR1063
TRANSISTOR MPS2222A NPN
1
Q8
TR1166
TRANSISTOR PNP 2N5401
1
Q1P, Q1AP
TR1245
TRANSISTOR NPN TIP35E
2
Q2P, Q2AP
TR1246
TRANSISTOR PNP TIP36E
2
Q3P
TR1247
TRANSISTOR NPN TIP32E
1
Q4P
TR1248
TRANSISTOR PNP TIP31E
1
REF. NO.
PART NO.
DESCRIPTION
QTY
Miscellaneous
L1
SA0000042
AIR CORE INDUCTOR 1.8uH MI
1
LED1
LE1032
LED BICOLOR RED/GREEN 5mm. PI 1
SW1
SW1070
SWCH SLIDE SP3T RIGHT AN PI
1
24
SW1075
SWITCH ROCKER 2P2T
1
SNAP (230V ONLY)
TH1
TH1006
NTC THERMISTOR 10K
Ω
@25 P
1
TRIAC
TY1001
MAC224-4 TRIAC 200V 25A
1
XFORMR
MI1130
POWER TRANSFORMER (120V)
1
MI1176
POWER TRANSFORMER (230V)
1
Date
Rev. No.
Changes Made
3/21/96
1
Increment And Transistor Voltage To 140v
6/19/96
2
R11 changed from
27K
to 51K
R12 changed from
51K
to 24K
R9
changed from
20K
to 200K
R10 changed from
33K
to 200K
R29 changed from
11K
to 33K
R51 changed from
160K
to 470K
R39 changed from
47K
to 10K
R54 changed from
47K
to 10K
R22 changed from
15K
to 4.7K
R34 changed from
15K
to 4.7K
R20 changed from
220
to 160
R40 changed from
220
to 160
R33 changed from
4.3K
to 4.7K
C5changed from
.1
µ
F
to .033
µ
F
C7
changed from
.1
µ
F
to .033
µ
F
C11 changed from
.1
µ
F
to .022
µ
F
C15changed from
.047
µ
F to 3300
ρ
F
C21 changed from
100
ρ
F
to 330
ρ
F
Fuse changed from
3A
to 5A
C19 changed from
22
µ
F/16V to 22
µ
F/63V
C28 changed from
22
µ
F/16V to 22
µ
F/63V
R5P changed from
10
to 5.1
R6P changed from
10
to 5.1
C1
changed from 4700
µ
F/50V to 4700
µ
F/63V
C2
changed from 4700
µ
F/50V to 4700
µ
F/63V
Date
Rev. No.
Changed Made
6/19/96
3
R
was added from 100 -Dwg Rev.03
C
was added from 0.1
µ
F/100V -Dwg Rev.03
CX, CY added from 470
ρ
F - Dwg Rev.03
6/24/96
4
PC1132-1 was changed to PC1132-2
Q1AP was added
R1AP, R2AP were added from 0.1ohm
Q2AP was added
R2P was added from 100
C4P was added from 0.1
Q1AP was added
R1AP, R2AP were added from 0.1ohm
Q2AP was added
R2P was added from 100
C4P was added from 0.1
µ
F/100V
CX, CY were changed from 470
ρ
F to C2P, C3P
DIP, D2P were deleted
7/290/96
5
R20 changed from
220
to 160
R40 changed from
220
to 160
R5P changed from
10
to 5.1
R6P changed from
10
to 5.1
7/29/96
4
R29 was deleted from 33K
R9
R9
was deleted from 200K
R51 was deleted from 470K
R10 was deleted from 200K
C7
R10 was deleted from 200K
C7
was deleted from 0.033
µ
F 10%
R29 was added from 33.2K 1%
R9
R9
was added from 200K 1%
R51 was added from 475K 1%
R10 was added from 200K 1%
C7
R10 was added from 200K 1%
C7
was added from 0.033
µ
F 5 %
REVISIONS
1 0
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BASS20 PACKAGING VIEW (MUSIC20 & SCS120)
1 1
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PRINTED CIRCUIT BOARDS (TOP VIEW)
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