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SERVICE NOTES

Issued by RJA

All rights reserved. No part of this publication may be reproduced in any form without the written permission
of ROLAND CORPORATION.

Printed in Japan (0500) (SC-KWS)

17058357E0

Dec. 2005

RT-20

Table of Contents

Содержание BOSS RT-20

Страница 1: ...tes 2 Specifications 3 Location of Controls 4 Location of Controls Parts List 5 Exploded View 1 6 Exploded View 1 Parts List 6 Exploded View 2 7 Exploded View 2 Parts List 7 Exploded View 3 8 Exploded...

Страница 2: ...code Because supply is prohibited due to copyright restrictions Because reissuance is restricted Because the part is made to order at current market price Part Replacement When replacing components ne...

Страница 3: ...OUTPUT A MONO jack 1 4 inch phone type OUTPUT B jack 1 4 inch phone type AC Adaptor jack Power Supply DC 9 V Dry battery R6 LR6 AA type x 6 AC Adaptor Current Draw 85 mA 9 V max Expected battery life...

Страница 4: ...4 Dec 2005 RT 20 Location of Controls fig panel 1 2 4 3 7 11 6 5 b a 4 8 9 10...

Страница 5: ...0R0 MINIMUM VR KNOB 8 5 G2567163R0 LED COVER 1 6 G2147880R0 LED LENS 1 7 G2217191R0 REAR PANEL 1 8 F3449415 ADAPTOR JACK KM02009AB 1 9 F3159104 SWITCH SS037 P222BHH PE9 1 10 13449150 6 5MM JACK HLJ054...

Страница 6: ...G2357111R0 CUSHION R 2 3 H5029851 PEDAL SHAFT 2 4 22157702R0 PEDAL GUIDE BUSH 2 5 22177109R0 COIL SPRING 2 6 G2357116R0 PEDAL PLATE 62X53 2 7 G2357115 PEDAL FOOT M8 2 8 G2187529R0 PEDAL R 1 9 75E202T1...

Страница 7: ...PART NAME DESCRIPTION Q TY 20 G2147880R0 LED LENS 1 21 75D522N0R0 MINIMUM VR KNOB 8 24 G2217192R0 PANEL 1 26 G2217749R0 LED PANEL 1 27 G2567163R0 LED COVER 1 No PART CODE PART NAME DESCRIPTION Q TY c...

Страница 8: ...TY 10 75D422E000 BOTTOM COVER 1 11 G2357118 BOTTOM FOOT 2 12 G2017621R0 BATTERY COVER 1 13 G2017620 BATTERY CASE 1 14 G2177308 BATTERY TERMINAL 1 15 G2177309 BATTERY TERMINAL 1 16 G2177307 BATTERY TER...

Страница 9: ...IPTION Q TY 23 G225712901 INSULATING SHEET 1 25 G2217191R0 REAR PANEL 1 28 G2197127 JACK SPACER 1 29 75E203J0R0 JACK BOARD ASSY 1 30 75E203P0R0 PANEL BOAD ASSY 1 31 G2147807 JACK HOLDER 1 No PART CODE...

Страница 10: ...DS JK1 JK4 2 13449150 6 5MM JACK HLJ0544 0100109 JK2 JK3 JK5 JK6 4 PWB ASSY 75E203J0R0 JACK BOARD ASSY 1 75E203P0R0 PANEL BOAD ASSY 1 IC 04012978 IC CPU UPD780034AGK IC11 1 02565501 IC DSP TC220CCA0AF...

Страница 11: ...59704 CHIP CAPACITOR 1608 TYPE GRM39CH220J50PT C103 C104 C111 C112 4 F5359803 CHIP CAPACITOR 1608 TYPE GRM39CH151J50PT C30 C48 2 F5359817 CERAMIC CAPACITOR GRM39B683K50PT 0 068 K C98 1 F5359812 CHIP C...

Страница 12: ...H5039158R0 WASHER M9X14X0 5T NI 6 PACKING G2357111R0 CUSHION R 2 G2607212 PACKING CASE LOWER 1 G2627755R0 PACKING CASE UPPER 1 G2237613 REAR PAD 1 G2237614 SIDE PAD 1 MISCELLANEOUS G3487163 WIRING BAT...

Страница 13: ...Check is executed automatically Exiting Test Mode Turn off the power Skipping If you set the MODE knob previously as follows before entering the Test Mode you can specify the start point of the Test M...

Страница 14: ...e MIN position confirm the display of the Virtual Rotor Display changes And when rotating it fully to the MAX position confirm the display of the Virtual Rotor Display changes again fig 03 VR etc 6 In...

Страница 15: ...clock fig 05 EXP 2 10 Remove the EV 5 from the SPEED EXP PEDAL jack 11 Confirm the red LED in the Virtual Rotor Display turns off 6 Analog Bypass Waveform Check 1 Press the right pedal to start the An...

Страница 16: ...t the Analog Bypass Route FET Switch Check fig 07 ANASW panel 2 Confirm the output wave disappears and the following picture appears fig 07 ANASW 1_70 200 mV DIV 1 ms DIV 200Hz 500 mV p p 40 mV p p 8...

Страница 17: ...l 2 Connect an oscilloscope to OUTPUT A MONO 3 Connect an oscillator to INPUT A MONO and INPUT B and input rectangular waves of 200 Hz 500 mV p p Or confirm they have been inputted 4 Confirm the outpu...

Страница 18: ...ONO and OUTPUT B 7 Give a shock hard vibration to the RT 20 s body and confirm any abnormal noise are not generated from OUTPUT A MONO OUTPUT B or PHONES L R 13 DSP Through Route Residual Noise Check...

Страница 19: ...19 Dec 2005 RT 20...

Страница 20: ...Dec 2005 RT 20 Block Diagram fig block L 21 20...

Страница 21: ...22 Dec 2005 RT 20 Circuit Board JACK BOARD fig board jack L...

Страница 22: ...23 Dec 2005 RT 20 Circuit Board PANEL BOARD fig board PANEL L...

Страница 23: ...VSS 5 4 DIV 55 V D D 5 6 DA0 57 AD0 58 V D D 5 9 BCK 60 VSS 6 1 LRCK0 62 LRCK1 63 V D D 6 4 MCK 65 V S S 6 6 DA1 67 AD1 68 DA2 69 AD2 70 VSS 7 1 CTYPE 72 V D D 7 3 DA3 74 AD3 75 SYI 76 TESTB 77 TESTT...

Страница 24: ...8 2 2k R119 2 2k IC14 BU2090F VSS 1 DATA 2 3 Q0 4 Q1 5 Q2 6 Q3 7 Q4 8 Q5 9 Q6 10 Q7 11 Q8 12 Q9 13 Q10 14 Q11 15 V D D 1 6 R100 1k C125 0 1 C120 10 16 R103 1k IC15 BU2090F V S S 1 DATA 2 3 Q0 4 Q1 5 Q...

Страница 25: ...27 Dec 2005 RT 20 MEMO...

Страница 26: ...MEMO Dec 2005 RT 20...

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