Boss BF-3 User Manual

SERVICE NOTES Issued by RJA Copyright © 2002 ROLAND CORPORATION All rights reserved. No part of this publication may be reproduced in any form withou

10July.2002 CIRCUIT BOARD View from components sideView from foil side

11BF-3T

13July.2002 BF-3T CIRCUIT DIAGRAM fig.mainboardACADAPTORA8VA4VVR BOARD(PCB G2927207 2/5)(PCB G2927207 01 1/5)CPUDC/DCConverterDSP (MR3)*10kF,150kF=+

2July.2002 SPECIFICATIONS BF-3: Flanger • Nominal Input Level-20 dBu• Input Impedance1 M ohm• Nominal Output Level-20 dBu• Output Impedance1 k ohm• R

3BF-3T EXPLODED VIEW fig.bunkaiSwitchJM-0404(13129710)Foot Base(2235730400)Spring(2217710900)Cushion(2226733300)Battery Connector(F3419102)Bottom Cau

4July.2002 PARTS LIST fig.part1e CASING 2235730500 BOTTOM BASE 235-305 1 2235730400 FOOT BASE (PEDAL MAT) 235-304 1 2202785100 BOTTOM CO

5BF-3T 00567556 RPC05T 105 J MTL.FILM RESISTOR R1,R3,R10,R15,R16,R17,R21,R32,R34,R50,R7111 00567067 RPC05T 221 J MTL.FILM RESISTOR R40,R42 2

6July.2002 ACCESSORIES (Standard) # G6017304 OWNER’S MANUAL JAPANESE 1# G6017305 OWNER’S MANUAL ENGLISH 1

7BF-3T TEST MODE Instruments and Other Items Required • Oscillator• Oscilloscope• Noise meter• 47 k ohm short-plug• Monitor speaker Test Items 1. DSP

8July.20025. RATE Volume Check(LED check included) 1. Turn the volume control from the minimum position to the middle and then to the maximum positio

9BF-3T 4. Check the waveforms output from both OUTPUTs A and B on the oscilloscope.Check that the output waveforms are the same as those shown in the