JBL PowerBass PB12, Service Manual

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Part#
Ref. Designator Description
80122 L3 8u5H 5 Amp 5% ferrite bead
80122 L4 8u5H 5 Amp 5% ferrite bead
80138
CMC 3m6H 5 Amp choke SAFETY
70322 LED 3 Molex 2 header Male connector
108326 LED Harness Molex 2 socket Glued into cabinet With 2 Bi-color LED
70323
3AG TYPE 3AG PC CLIP 2 PCB-mount fuse clips SAFETY
80117
3AG FUSE 2A fuse SloBlo, 3AG SAFETY
70324 0.187" Tabs 6 0.187" PCB fastons
70328 0.250" Tabs 1 0.250" PCB fastons
70325
PB12 faceplate PB12 faceplate
80105 Power cord Power cord SAFETY
70305 Strain relief Strain relief SAFETY
70151 Switch SW SPST Power Switch SAFETY
80116
Transformer MCI4632 100VA 4632 transformer SAFETY
PREAMP section of PCB Version 7.2
Resistors
40405
R1 4k7 .25W
5%
carbon
40405 R2 4k7 .25W 5% carbon
40406 R3 100k .25W 5% carbon
40406
R4 100k .25W
5%
carbon
40406 R5 100k .25W 5% carbon
40406 R6 100k .25W 5% carbon
40717 R8 2k7 .25W 5% carbon
40717
R9 2k7 .25W
5%
carbon
40409 R10 10k .25W 5% carbon
40731 R11 59k .25W 5% carbon
40504
R12 45k3 .25W
1%
metal
40412 R13 33k2 .25W 1% metal
40709 R14 68k1 .25W 1% metal
R15 NOT USED
R16 NOT USED
40732 R17 56k2 .25W 1% metal
40722 R18 6k8 .25W 5% carbon
40722
R19 6k8 .25W
5%
carbon
40722
R20 6k8 .25W
5%
carbon
R21 0 ohms
40722 R22 6k8 .25W 5% carbon
R23 0 ohms
40109 R24 604 ohms .25W 1% metal
40412 R25 33k2 .25W 1% metal
40405
R26 4k7 .25W
1%
metal
40109
R27 604 ohms .25W
1%
metal
40412 R28 33k2 .25W 1% metal
40403 R30 10k .25W 1% metal
40733
R33 12k1 .25W
1%
metal
40734 R34 120k .25W 1% metal
40451 R35 137k .25W 1% metal
40402 LEVEL 5k POT 20% Log (A) Pot
40707
LOPASS Dual 20k POT
20%
Lin (B) Pot.
Capacitors Film Caps may be used in any position EXCEPT C1,C2