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Roland Boss RC-20XL, Service Notes, Page: 1 / 27

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Summary of Contents for Boss RC-20XL

Page 1: ...20XL TABLE DF CONTENTS CAUTIONARY NOTES 2 SPECIFICATIONS 2 LOCATION OF CONTROLS 4 LOCATION OF CONTROLS PARTS LIST 5 EXPLODED VIEW EXPLODED VIEW PARTS LIST 6 PARTS LIST 10 CHECKING THE VERSION NUMBER 1...

Page 2: ...utton AUTO START Button MODE Button Indicators POWER serves also as battery check indicator REC PLAY OVERDUB PEAK LOOP QUANTIZE LOOP PHRASE ONE SHOT PHRASE TAP TEMPO REVERSE WRITE EXIT AUTO START MODE...

Page 3: ...3 RC 20XL...

Page 4: ...4 Sep 2004 LOCATION OF CONTROLS fig panel 19 30 31 31 30...

Page 5: ...ENS 4 13 G247751301 KNOB BUTTON VGA KEYTOP S WITHOUT LENS 2 14 G2217186 CASING LED PANEL 1 15 1502928100 DIODE LED RED L 34HDSL 8 16 F5029117 DIODE LED L 312LRD 4 17 F5029125 DIODE LED YELLOW L 34YDSL...

Page 6: ...L SHAFT 2 4 2215770201 PEDAL GUIDE BUSH 215 702 2 5 2217710900 COIL SPRING 217 109 2 6 G2357116 PEDAL PLATE 62X53 2 7 G2357115 PEDAL FOOT M8 2 8 G2187530 PEDAL R 1 9 G2187531 PEDAL L 1 NO PART CODE PA...

Page 7: ...TION Q TY 21 G2477122 R KNOB 5 24 G2217185 PANEL 1 26 G2217186 LED PANEL 1 32 G247751301 VGA KEYTOP S WITHOUT LENS 2 33 G247751001 VGA KEYTOP S BLACK WITH LENS 4 NO PART CODE PART NAME DESCRIPTION Q T...

Page 8: ...20 BATTERY CASE 1 14 G2177308 BATTERY TERMINAL 1 15 G2177309 BATTERY TERMINAL 1 16 G2177307 BATTERY TERMINAL 1 17 G2257130 BATTERY INSULATING SHEET 1 18 G2537558 QUICK MANUAL CAUTION LABEL 1 NO PART C...

Page 9: ...20 75E183P000 PANEL BOARD ASSY 1 22 G225712901 INSULATING SHEET CENTER 1 25 G2527110 REAR PANEL 1 34 This PWB ASSY is inclueded the JACK BOARD ASSY 1 46 G2147821 JACK HOLDER 1 NO PART CODE PART NAME D...

Page 10: ...B 2 F3129306 SWITCH SKQKAB SW2 SW3 SW4 SW5 SW6 SW7 on PB 6 JACK EXT TERMINAL F3449709 3 5MM MINI JACK SHJ 3513TS STEREO JK3 on JK 1 F344941501 ADAPTOR JK KM02009BB JK6 on JK 1 13449155MF PHONE JACK MO...

Page 11: ...99106 47 J MTL FILM RESISTOR R8 R90 on JK 2 F5429393 47KD MTL FILM RESISTOR R48 R55 R58 R63 R77 R79 on JK 6 F5399160 56K J MTL FILM RESISTOR R68 R73 R78 on JK 3 F5429394 56KD MTL FILM RESISTOR R75 R82...

Page 12: ...H5039414 NYLON WASHER M5 1X9 5X0 5 BLACK 2 H5019430 SCREW M2 6X5 BINDING HEAD TAPTITE P FEZC 2 H5039324 MINI JACK NUT AJ324A 3C 1 G2147821 JACK HOLDER 1 H5039521 VR ACCESSORY NUT M7 5 H5039112 WASHER...

Page 13: ...e REVERSE and MODE buttons turn on the power of the receiving RC 20XL 4 Within three seconds of turning on the power press the REVERSE button and then the MODE button WRITE and the FLAT AMP SIMULATE a...

Page 14: ...FLASH ROM check 2 Version number check 3 Switch and LED check 4 LEVEL volume check 5 GUIDE volume check 6 DA check 7 Output check 8 INST volume check 9 MIC volume check 10 MUTE check 11 AUX IN NORMAL...

Page 15: ...B go dark and that TAP TEMPO changes from orange to red Press the TAP TEMPO switch and verify that TAP TEMPO goes dark Press the WRITE switch and verify that WRITE goes dark Press the EXIT switch and...

Page 16: ...SELECT volume to the 4 position Verify that TAP TEMPO changes from red to green Set the MIC volume to minimum and gradually move it to maximum Verify that the waveform increases smoothly Rotate the M...

Page 17: ...SELECT volume check Set the PHRASE SELECT control to the 10 position Confirm that the FLAT AMP SIMULATE LED goes off Set the PHRASE SELECT control to the 9 position Confirm that the CENTER CANCEL LED...

Page 18: ...there is no problem all LEDs other than PEAK will light Follow the procedure described in the section for the test you want to perform In order to perform 5 GUIDE volume check you must first perform...

Page 19: ...IC6 RESET IC IC6 SW LED GATE ARRAY IC4 IC10A IC15A IC15B AUX IN MIC INST IC9B IC9A IC12A IC12B Q9 CENTER CANCEL FILTER FLAT AMP FILTER IC10B Q12 AD DA IC14 IC13A IC13B CN3 CN2 VR 1 3 PEAK LED16 INST...

Page 20: ...20 Sep 2004 CIRCUIT BOARD PANEL fig b panel 1 fig b panel 2 View from components side View from foil side...

Page 21: ...21 RC 20XL...

Page 22: ...1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 CN1 WIRING14P 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 SW2 SKQKAB 1 2 SW1 SKQKAH 1 2 SW8 SKQKAH 1 2 D7 1SS352 1...

Page 23: ...24 Sep 2004 CIRCUIT BOARD JACK View from components side View from foil side...

Page 24: ...25 RC 20XL...

Page 25: ...k R39 47k R49 47k C51 100p R50 47k R46 100k Q17 RN1307 1 2 3 R34 47k IC8A TC4066BFT 1 2 13 Q13 RN1307 1 2 3 C47 1 50 R32 47k R40 47k R38 10k IC11A TC4W66F 1 2 7 R59 47K R64 47K C60 0 1 R36 82k Q10 2SK...

Page 26: ...7 NC 46 NC 45 NC 40 NC 39 NC 38 NC 35 NC 34 NC 33 NC 28 NC 27 NC 26 NC 25 NC 24 NC 23 C9 0 1 RA14 CRN34103J 1 8 2 7 3 6 4 5 S 80930ALMP DAT T2 IC6 NC 4 Cp 5 VDD 2 VSS 3 OUT 1 RA8 CRN34103J 1 8 2 7 3 6...

Page 27: ...30 Sep 2004...

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