Service manual 400rb.
Table of contents operating instructions 3 turn on / calibration procedure 6 schematics 9 engineering change orders (ecos) 16 bill of materials 20
400rb-200w bass amp turn on procedure board #’s: 206-0047-c (preamp), 206-0041-a ( power amp) model# 400rb all options 8-19-91 setup 1) variac on zero, power switch off- connect power cord. 2) connect either output to load box ( load a). 3) resistance loads open ( switch in center). 4) speaker on. 5...
2) turn front panel knobs to 10, switches out. 3) connect front speaker to output and listen to noise. It should be smooth, not crackling. 4) change ac voltage range to 1v. 5) noise should measure less than 400mv. 6) engage low-cut, contour, and hi-boost. Noise 7) volume to 0. Noise 8) boost to 0. N...
400rb-ii 6/22/99 indented bill of materials *-level 1 refers to main asy main assembly numbers are in bold face. Level 2 refers to board pts. Most commonly needed parts are italicized. Lvl.* part# description qty ref. Desig. 1 010-0012-0 mpsa06 npn 80v 500ma to-92 1 1 011-0002-0 tip31c npn 80v 3a to...
Lvl. Part # description qty ref.Desig. 1 100-0020-0 bumper,round rubber,1/2"x.14" 4 1 100-0030-0 button,rect black cap - push switch 4 1 100-0031-0 washer,#4,rect,to-220 mgt 5 1 100-0032-0 insulator,mica,56-77-11ap,to-220 5 1 100-0033-0 cable tie - plt 1m-m,small 1 1 100-0037-0 heat clip,to-98 1 1 1...
Lvl. Part# description qty. Ref. Desig. 1 130-0063-0 400rb front panel overlay 1 1 130-0064-0 400rb rear panel overlay 1 1 132-0314-e 400rb-ii rear panel 1 2 120-0005-0 alum .100 102 1 132-0317-a 400rb,200w upper sink 1 2 120-0006-0 alum .125 44 1 132-0318-a 400rb,200w lower sink 1 2 120-0006-0 alum...
2 030-2103-0 cap,cer,ax,103,10%,50v,x7r 1 c4 2 030-2104-0 cap,cer,ax,104,10%,50v,x7r 2 c1,c6 2 030-2470-0 cap,cer axial,47 pf,10%,50v,npo 1 c5 2 030-2561-0 cap,cer axial,561,10%,50v,x7r 2 c8,c10 2 031-2227-0 cap,elec,rad,227,-10%+50%,50v 1 c7 2 038-0106-0 cap,elec,axial tr,106,20%,16v 3 c2,c9,c11 2 ...
Lvl part# description qty ref. Desig. 2 031-1227-0 cap,elec,rad,227,-10%+50%,25v 2 c65,c66 2 031-2335-0 cap,elec,rad,335,20%,50v 2 c60,c68 2 032-3104-0 cap,pe,104,5%,63v 1 c2 2 038-0106-0 cap,elec,axial tr,106,20%,16v 4 c11,c72,c82,c84 2 038-2105-a cap,elec axial tr,105,20%,50v 1 c87 2 051-1002-0 re...
