JBL SCS 138-178, SCS 138, SCS 178 Service Manual

SIMPLY CINEMA - SCS 138-178 Subwoofer

Service manual V1 (E)

• High Frequency Cut-off: 40Hz - 120Hz Variable

• Built-In Amplifier Power: 100 Watts RMS

• Drive Units: 200mm Paper Cone Long Throw Driver

• Dimensions (H x W x D): 450mm x 25 0mm x 360 mm

SPECIFICATIONS:

Active Subwoofer Section

• Low Frequency Cut-off: 35Hz

Bass Reflex Enclosure

• Weight: 13.6kg

106SUB138E 106SUB138E

PART NO. DESCRIPTION QTY REFERENCE

1 101OSUB138C PCB AMP ASS'Y 1
2 101ASUB138C AI PCB AMP ASS'Y 1
3 104sub138c01 PCB 1
4 11016103j26 Resistor 10K 1/6W ±5% CF 1 R303
5 11016273j26 Resistor27K 1/6W ±5% CF 1 R304
6 11016472j26 Resistor 4.7K 1/6W ±5% CF 2 R301,2
7 115h203b205 Variable Resistor B20K 1 VR302
8 115h503a202 Variable Resistor A50K 1 VR301

9 180sms50126 SLIDE SW MS50126 1 SW301
10 19006m4558d I.C. OPA 4558D 1 U301
11 101OSUB138E PCB ASS'Y AMP 1
12 101ASUB138E AI PCB ASS'Y AMP OF SUB138 1
13 104sub135e00 PCB OF SUB135CE 1
14 11014122j26 Resistor 1.2K 1/4W ±5% CF 1 R265
15 11014472j26 Resistor 4.7K 1/4W ±5% CF 2 R201,2
16 11014560j26 Resistor 56 1/4W ±5% CF 1 R117
17 11016101j26 Resistor 100 1/6W ±5% CF 4 R120,213,4,5
18 11016102j26 Resistor1K 1/6W ±5% CF 3 R124,66,254
19 11016103j26 Resistor 10K 1/6W ±5% CF 17 R133,4,209,12,6,7,20,1,2,5,8,9,30,2,5,40,60
20 11016104j26 Resistor100K 1/6W ±5% CF 3 R231,163,4
21 11016105j26 Resistor1M 1/6W ±5% CF 2 R143,259
22 11016123j26 Resistor 12K 1/6W ±5% CF 3 R135,9,65
23 11016124j26 Resistor 120K 1/6W ±5% CF 1 R233

24 11016151j26 Resistor 150 1/6W ±5% CF 1 R253
25 11016152j26 Resistor 1.5K 1/6W ±5% CF 7 R103,23,36,7,41,2,53
26 11016153j26 Resistor15K 1/6W ±5% CF 5 R118,45,52,4,234
27 11016154j26 Resistor 150K 1/6W ±5% CF 2 R131,252
28 11016181j26 Resistor180 1/6W ±5% CF 2 R111,4
29 11016205j26 Resistor2.0M 1/6W ±5% CF 1 R257
30 11016223j26 Resistor22K 1/6W ±5% CF 10 R128,9,55,6,8,60,237,8,55,62,3
31 11016273j26 Resistor27K 1/6W ±5% CF 1 R223
32 11016332j26 Resistor 3.3K 1/6W ±5% CF 5 R106,7,44,236,58
33 11016392j26 Resistor 3.9K 1/6W ±5% CF 2 R105,8
34 11016393j26 Resistor39K 1/6W ±5% CF 1 R126
35 11016470j26 Resistor47 1/6W ±5% CF 4 R112,3,5,6
36 11016471j26 Resistor470 1/6W ±5% CF 3 R140,61,2
37 11016472j26 Resistor 4.7K 1/6W ±5% CF 8 R110,25,30,47,50,9,207,8
38 11016473j26 Resistor47K 1/6W ±5% CF 5 R101,219,49,50,1
39 11016512j26 Resistor 5.1K 1/6W ±5% CF 2 R210,1
40 11016513j26 Resistor 51K 1/6W ±5% CF 1 R224
41 11016563j26 Resistor 56K 1/6W ±5% CF 1 R104
42 11016681j26 Resistor680 1/6W ±5% CF 2 R148,51
43 11016682j26 Resistor6.8K 1/6W ±5% CF 1 R109
44 11016913j26 Resistor 91K 1/6W ±5% CF 4 R203,4,5,6
45 1302b101k503 Disc Capacitor 100P 50V ±10% 4 C139,40,207,14
46 1302b102k503 Disc Capacitor 1000P 50V ±10% 4 C116,41,203,20
47 1302b221k503 Disc Capacitor 220P 50V ±10% 6 C204,5,10,1,2,30
48 1302b681k503 Disc Capacitor 680P 50V ±10% 1 C208

49 1302f104z503 Disc Capacitor 0.1U 50V +80/-20% 13 C108,13,5,9,37,8,232,5,6,7,9,40,1
50 1303f473m503 Disc Capacitor 0.047U 50V ±20% 2 C106,209
51 130sl470k503 Disc Capacitor 47P 50V +350/-1000 ±10% 1 C229
52 132103j503 Mylar Capacitor 0.01U 50V ±5% 2 C223,4
53 132104j503 Mylar Capacitor 0.1U 50V ±5% 3 C107,221,2
54 132223ja03 Mylar Capacitor 0.022uF 100V ±5% 9 C123,4,5,6,7,8,31,2,215
55 132473j503 Mylar Capacitor 0.047U 50V ±5% 1 C216
56 1353105m50 Electrolytie Cap. 1U 50V ±20% 3 C105,12,228
57 1353106m50 Electrolytie Cap. 10U 50V ±20% 6 C201,2,6,13,9,31
58 1353107m16 Electrolytie Cap. 100uF 16V ±20% 7 C109,10,17,20,234,8,42
59 1353107m50 Electrolytie Cap. 100U 50V ±20% 1 C136
60 1353226m50 Electrolytie Cap. 22U 50V ±20% 2 C114,8
61 1353227m10 Electrolytie Cap. 220U 10V ±20% 2 C129,30
62 1353227m16 Electrolytie Cap. 220U 16V ±20% 1 C111
63 1353336m16 Electrolytie Cap. 33U 16V ±20% 1 C233
64 1353476m25 Electrolytie Cap. 47U 25V ±20% 1 C103
65 192027c1815gr Transistor 2SC1815GR 9 Q102,11,2,3,8,23,6,206,7
66 192027c2235y Transistor 2SC2235Y 1 Q121
67 192028a1015gr Transistor 2SA1015GR 3 Q114,6,27
68 192028a965y Transistor 2SA965Y 1 Q125
69 1921672n5551 Transistor 2N5551 2 Q103,9
70 1921682n5401 Transistor 2N5401 AI-PNP 350V 500mA 2 Q104,10
71 197131n4148 Ziode 1N4148 19 D101,3,5,8,13,4,201,2,6,7,8,10,1,2,3,4,5,6,7
72 19915000335 Zener Ziode 3.3V 1/2W 2 D102,205
73 19915000625 Zener Ziode 6.2V 1/2W 2 D106,7

74 19915001605 Zener Ziode 16V 1/2W 1 D109
75 101OLIMIT PCB ASS'Y OF LIMITER 1
76 101ALIMIT AI ASS'Y OF LIMITER 1
77 104limit00 PCB OF LIMITER 1
78 11016103j26 Resistor 10K 1/6W ±5% CF 6 R301,3,4,8,9,14
79 11016153j26 Resistor15K 1/6W ±5% CF 1 R302
80 11016223j26 Resistor22K 1/6W ±5% CF 2 R310,2
81 11016333j26 Resistor 33K 1/6W ±5% CF 1 R305
82 11016474j26 Resistor 470K 1/6W ±5% CF 1 R307
83 11016751j26 Resistor750 1/6W ±5% CF 2 R311,3
84 11016755j26 Resistor 7.5M 1/6W ±5% CF 1 R306
85 1302f104z503 Disc Capacitor 0.1U 50V +80/-20% 2 C305,6
86 132103j503 Mylar Capacitor 0.01U 50V ±5% 2 C302,3
87 1353226m50 Electrolytie Cap. 22U 50V ±20% 1 C301
88 1353476m25 Electrolytie Cap. 47U 25V ±20% 1 C304
89 192027c1815gr Transistor 2SC1815GR 2 Q301,2
90 197131n4148 Ziode 1N4148 2 D301,2
91 1759f40hr2 40PIN PITCH=2.54mm HR2*40 0.15 P301
92 19016tl074cn I.C. TL074CN ST 1 U301
93 11010821jk1 Resistor 820 1W ±5% 1 R132
94 110122r2j15 Resistor 2.2 1/2W ±5% 1 R127
95 11016102j26 Resistor1K 1/6W ±5% CF 2 R226,7
96 11016222j26 Resistor2.2K 1/6W ±5% CF 2 R266,7
97 11016472j26 Resistor 4.7K 1/6W ±5% CF 1 R157
98 113500r1j10 Cement Resistor 0.1 5W 2 R121,2