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1、RC-20May. 2001 1 SERVICE NOTES First Edition Issued by RJA Nominal Input Level INPUT : -20 dBu (variable) MIC : -40 dBu (variable) AUX IN : -10 dBu Input Impedance INPUT : 1M ohm MIC: 1k ohm AUX IN : 47k ohm Nominal Output Level OUTPUT : -20 dBu Output Impedance 1k ohm Recommended Load Impedance 10k
2、 ohm or greater Internal Memory Recording Time : 5 min. 30 sec. (max.) 10 loop phrases + 1 one-shot phrase (max.) Controls REC/PLAY/OVERDUB Pedal STOP/TAP TEMPO Pedal INST Knob MIC Knob PHRASE SELECT Knob GUIDE Knob LEVEL Knob REVERSE Button TAP TEMPO Button WRITE Button EXIT Button AUTO START Butto
3、n MODE Button Indicators POWER (serves also as battery check indicator) REC PLAY OVERDUB PEAK PHRASE USED MEMORY FULL LOOP QUANTIZE TAP TEMPO REVERSE WRITE EXIT AUTO START INST & MIC NORMAL CENTER CANCEL FLAT AMP SIMULATE Connectors INST Jack MIC Jack AUX IN Jack (Stereo miniature phone type) PHRASE
4、 SHIFT Jack REVERSE Jack OUTPUT Jack Power DC 9V : Dry battery (AA type) x 6, AC Adaptor Power Consumption 85 mA (9 V max.) * Expected battery life under con- tinuous use: Carbon : 9 hours Alkaline : 25 hours These figures will vary depend- ing on the actual conditions of use. Dimensions 173 (W) x 1
5、58 (D) x 57 (H) mm 6-13/16 (W) x 6-1/4 (D) x 2-1/4 (H) inches Weight 1.2 kg / 2 lbs 7 oz (including batteries) Accessories Owners Manual English (#G6017294) Dry battery x 6 (#*) Sound Library for RC-20 (#G2567113) Sound Library for RC-20 (#G6017447) Options AC Adaptor (PSA-series) Foot Switch (FS-5U
6、) * 0 dBu = 0.775 Vrms * In the interest of product improvement, the specifications and/or appearance of this unit are subject to change without prior notice. SPECIFICATIONS RC-20 : PHRASE RECORDER Copyright 2001 ROLAND CORPORATION All rights reserved. No part of this publication may be reproduced i
7、n any form without the written permission of ROLAND CORPORATION. 17059083Printed in Japan 900 (DP) TABLE OF CONTENTS SPECIFICATIONS. LOCATION OF CONTROLS . EXPLODED VIEW . PARTS LIST . TEST MODE . SERIAL DUMP AND UPDATE PROCEDURE . BLOCK DIAGRAM . CIRCUIT BOARD (PANEL, JACK) . CIRCUIT DIAGRAM (PANEL
8、) . CIRCUIT DIAGRAM (JACK 1-16 LOT) . CIRCUIT DIAGRAM (JACK 17 LOT up) . CIRCUIT BOARD (CENTER) . CIRCUIT DIAGRAM (CENTER) . Page .1 .2 .3 .6 .8 .11 .13 .14 .16 .17 .18 .19 .20 收音机爱好者资料库 Ra d i o Fa n s .CN RC-20May. 2001 2 LOCATION OF CONTROLS Parts No.Part CodePart NameQty 1G2017146CASE1 2G2187530
9、PEDAL R1 3G2187531PEDAL L1 4G2357116PEDAL PLATE2 5H5029851PEDAL SHAFT2 6G2217133PANEL1 7H5029850HEXAGON SOCKET BUTTON HEAD SCREW M4x64 8F3279802POT. RD901-40-125F-B54-00D 2 9F3279803POT. RD901-40-125F-B54-11D 1 10F3279805POT. RD901-40-125F-AF5-00D 2 11G2477122R-KNOB5 12G247751001KEYTOP S BLACK WITH
10、LENS4 13G247751301KEYTOP S WITHOUT LENS2 14G2217137LED PANEL1 151502928100LED (RED) L-34HDSL8 16F5029125LED (YELLOW) L-34YDSL1 17F5029124LED (GREEN) L-34GDSL2 1815029342LED (RED/GREEN) GL3ED81 19F5029126POWER LED L-113GDT1 20G2217135REAR PANEL 1 21F344940301ADAPTOR JACK DJ-0711B-0201 2213449150MF6.5
11、MM JACK HTJ-064-12D1 2313449155MF6.5MM JACK HTJ-064-12I4 24F3440404MINI JACK AJ324A-3C1 25G2017621BATTERY COVER1 26G2017148BOTTOM COVER1 27G2357118BOTTOM FOOT2 28F2539803LABEL CAUTION1 29G2537848QUICK MANUAL LABEL1 收音机爱好者资料库 Ra d i o Fa n s .CN RC-20May. 2001 3 EXPLODED VIEW Parts No.Part CodePart N
12、ameQty 1G2017146CASE1 2G2357111CUSHION R2 3H5029851PEDAL SHAFT2 42215770201PEDAL GUIDE BUSH2 5G2177104SPRING2 6G2357116PEDAL PLATE2 7G2357115PEDAL FOOT2 8G2187530PEDAL R1 9G2187531PEDAL L1 10G2017148BOTTOM COVER1 11G2357118BOTTOM FOOT2 12G2017621BATTERY COVER1 13G2017620BATTERY CASE V61 14G2177308BA
13、TTERY TERMINAL(+)1 15G2177309BATTERY TERMINAL(-)1 16G2177307BATTERY TERMINAL(+/-)1 17G2257130BATTERY INSULATING SHEET1 18F2539803LABEL CAUTION1 19G2537848QUICK MANUAL LABEL1 21G2477122R-KNOB5 22G2257129INSULATING SHEET CENTER1 23G2257131INSULATING SHEET BOTTOM1 24G2217133PANEL1 25G2217135REAR PANEL1
14、 26G2217137LED PANEL1 32G247751301KEYTOP S WITHOUT LENS2 33G247751001KEYTOP S BLACK WITH LENS4 43G2197502MINI JACK HOLDER1 Screws No.Part CodePart NameQty aH5019115SCREW 3x8 PAN TAPPING-2 BZC2 bH5019110SCREW 3x6 PAN TAPPING-2 FEZC13 cH5029850SCREW M4x6 HEXAGON SOCKET BUTTON HEAD FENI4 d40011923INTER
15、NAL TOOTH WASHER M9.5x12.5x0.5 FENI3 e40016467JACK WASHER M9.2x14x0.5 FENI5 f40123545JACK NUT M9x11x2 NI5 gH5029852SCREW 4M3 HEXAGON SOCKET BUTTON HEAD FEBZC 2 hH5039413NYLON WASHER M4.1x7.5x0.5 BLACK2 iH5039414NYLON WASHER M5.1x9.5x0.5 BLACK2 jH5019430SCREW 2.6x5 BINDING TAPTITE P FEZC2 kH5039521VR
16、 ACCESSORY NUT M75 mH5029325SCREW 3x6 PAN HEAD TAPTITE-2 BZC5 nH5039324MINI JACK NUT M6 FENI1 1 2 5 3 i 4 g h RIGHT SIDE LEFT SIDE9 6 7 8 收音机爱好者资料库 Ra d i o Fa n s .CN RC-20May. 2001 4 EXPLODED VIEW 1 n d d b b ef 22 25 43 23 24 26 k 21 c 33 33 32 32 RC-20May. 2001 5 EXPLODED VIEW a 11 18 19 m 12 18
17、 19 11 16 j 14 15 17 10 13 Align this part with the edge surface. RC-20May. 2001 6 PARTS LIST CASINGQty G2017620BATTERY CASE V61 G2017621BATTERY COVER1 G2017148BOTTOM COVER1 G2357118BOTTOM FOOT2 G2017146CASE1 #G2217137LED PANEL1 #G2217133PANEL1 G2187531PEDAL L1 G2357116PEDAL PLATE62x532 G2187530PEDA
18、L R1 H5029851PEDAL SHAFT2 #G2217135REAR PANEL1 KNOB, BUTTON G247751001KEYTOP S BLACK WITH LENS4 G247751301KEYTOP S WITHOUT LENS2 G2477122R-KNOB5 SWITCH 01780101SKQKABTACT SWITCHSW1,SW2,SW4,SW6-SW8 on PB6 13129778SKQKAHTACT SWITCHSW3,SW5 on PB2 JACK, EXT TERMINAL 13449150MFHTJ-064-12D6.5MM JACK (STER
19、EO)JK7 on JB1 13449155MFHTJ-064-12I6.5MM JACK (MONO)JK1,JK2,JK4,JK5 on JB4 #F3440404AJ324A-3CMINI JACKJK3 on JB1 F344940301DJ-0711B-020ADAPTOR JACKJK6 on JB1 PWB ASSY #75D433M000 CENTER PWB ASSY(EXG)1 #75D433P001PANEL PWB ASSY1 NOTE : PANEL PWB ASSY includes the following parts. *PANEL BOARD ASSY *J
20、ACK BOARD ASSY IC #02780089UPD703102GJ-33-W05 VER1.01IC (CPU)IC1 on CB1 #02563023TC58V64AFTIC (FLASH MEMORY)IC6 on CB1 02451434AK4552VTIC (AD/DA)IC5 on CB1 02453389LC32V4265T-25IC (DRAM)IC4 on CB1 02121556LC24085B-SD1IC (I/F)IC3 on CB1 00346445NJM2100M(TE3)IC (BIPOLAR OP AMP)IC2 on CB1 15189261M5218
21、AFP-600EIC (BIPOLAR OP AMP)IC1 on PB. IC2,IC3,IC5,IC6 on JB5 #02458090TC4066BFT(EL)IC (CMOS)IC1 on JB1 15259118TC4W66F(TE12L)IC (CMOS)IC4 on JB1 15259884TC7S08F(TE85L)IC (CMOS)IC8 on CB1 01906156S-8520E33MC-BJS-T2IC (DC-DC REGULATOR)IC7 on JB1 02455056S-80930ALMP-DAT-T2IC (RESET)IC7 on CB1 TRANSISTO
22、R 153191072SC4116-GR(TE85R)TRANSISTORQ1,Q2 on PB. Q2 on JB3 15329103T02SK880-GR(TE85R)FET TRANSISTORQ1,Q11 on JB2 #02562867IRF7606TRANSISTORQ10 on JB1 E 15329521RN1307(TE85R)TRANSISTORQ1,Q2 on CB. Q3-Q7,Q12 on JB8 15329533RN2307(TE85R)TRANSISTORQ3-Q10 on CB8 DIODE 15339119T01SS352(TPH3)SWITCHING DIO
23、DED1 on CB. D1-D8 on PB. D11,D12 on JB11 010195341SS355 TE-17SWITCHING DIODED9 on JB1 F5339137SS14 VF=0.45VDIODED3,D7 on JB2 #0256287802DZ5.1-Y(TPH3)ZENER DIODED9 on PB1 15339120T01SS302(TE85R)DIODE ARRAYDA1-DA6 on JB6 15029342GL3ED8LED (RED/GREEN)LED9 on PB1 F5029126L-113GDTPOWER LEDLED17 on PB1 F5
24、029117L-312LRDLED (RED)LED4,LED12,LED14,LED15 on PB4 F5029124L-34GDSLLED (GREEN)LED2,LED10 on PB2 1502928100L-34HDSLLED (RED)LED3,LED5-LED8,LED11, LED13,LED16 on PB8 F5029125L-34YDSLLED (YELLOW)LED1 on PB1 RESISTOR #F53999100 OHMCHIP RESISTOR (3216TYPE)C3 on JB1 153993010 OHMCHIP RESISTOR (1608TYPE)
25、C25,R45 on JB2 #F5419716CRN34103JCHIP RESISTORRA2,RA7 on CB2 #F5419715CRN34680JCHIP RESISTORRA1,RA3-RA6,RA8-RA12 on CB10 00566867RPC05T 100 JCHIP RESISTOR (1608TYPE)R16 on CB1 00567023RPC05T 101 JCHIP RESISTOR (1608TYPE)R7,R9,R10,R15,R17,R18, R22,R23,R30 on CB9 00567156RPC05T 102 JCHIP RESISTOR (160
26、8TYPE)R6 on PB R46,R60,R62 on JB4 00567289RPC05T 103 JCHIP RESISTOR (1608TYPE)R3,R5,R11,R12,R21,R27,R28,R29 on CB. R2 on PB. R1,R3,R11,R12,R15,R21, R27,R42,R48,R50 on JB19 00567412RPC05T 104 JCHIP RESISTOR (1608TYPE)R3 on PB. R6,R13,R14,R47 on JB5 00567556RPC05T 105 JCHIP RESISTOR (1608TYPE)R5,R7 on
27、 PB. R2,R51 on JB5 00567167RPC05T 122 JCHIP RESISTOR (1608TYPE)R1 on PB1 00567290RPC05T 123 JCHIP RESISTOR (1608TYPE)R1 on CB. R31 on JB2 00566890RPC05T 150 JCHIP RESISTOR (1608TYPE)R20 on CB1 00567178RPC05T 152 JCHIP RESISTOR (1608TYPE)R24 on CB1 00567301RPC05T 153 JCHIP RESISTOR (1608TYPE)R2 on CB
28、. R33,R58 on JB3 00567067RPC05T 221 JCHIP RESISTOR (1608TYPE)R6,R14 on CB2 00567323RPC05T 223 JCHIP RESISTOR (1608TYPE)R23,R26,R54,R56 on JB4 00567334RPC05T 273 JCHIP RESISTOR (1608TYPE)R8 on PB1 00567089RPC05T 331 JCHIP RESISTOR (1608TYPE)R4 on PB1 00567367RPC05T 393 JCHIP RESISTOR (1608TYPE)R40 on
29、 JB1 00566967RPC05T 470 JCHIP RESISTOR (1608TYPE)R26 on CB1 00567245RPC05T 472 JCHIP RESISTOR (1608TYPE)R8,R52 on JB2 00567378RPC05T 473 JCHIP RESISTOR (1608TYPE)R9,R10 on PB. R4,R5,R9,R10,R16-R20, R22,R24,R25,R28,R29,R30, R37,R39,R53,R55,R57 on JB22 00567501RPC05T 474 JCHIP RESISTOR (1608TYPE)R59,R
30、61 on JB2 00567389RPC05T 563 JCHIP RESISTOR (1608TYPE)R4 on CB. R34,R35,R38,R41 on JB5 00566990RPC05T 680 JCHIP RESISTOR (1608TYPE)R8,R13 on CB2 00567390RPC05T 683 JCHIP RESISTOR (1608TYPE)R36 on JB1 00567401RPC05T 823 JCHIP RESISTOR (1608TYPE)R7 on JB1 POTENTIOMETER #F3279805RD901-40-125F-AF5-00DPO
31、T. W/0 CLICK 250KAVR4,VR5 on PB2 F3279802RD901-40-125F-B54-00DPOT. W/0 CLICK 50KBVR1,VR3 on PB2 F3279803RD901-40-125F-B54-11DPOT. W/11 CLICKS 50KBVR2 on PB1 CAPACITOR #F53593450.027U CHIP CAPACITOR (1608TYPE) C6 on JB1 F5367504100/6.3VCHIP CAPACITORC1,C3,C4,C24,C42,C46 on CB6 F53696011/50VCHIP CAPAC
32、ITORC1,C2 on PB. C2,C5,C18,C39 on JB6 01674167ECUV1H100DCVCHIP CAPACITOR (1608TYPE) C15,C39,C40 on CB. C19,C33 on JB5 01674278ECUV1H470JCVCHIP CAPACITOR (1608TYPE) C34,C35 on CB2 01674334ECUV1H101JCVCHIP CAPACITOR (1608TYPE) C7,C12,C17,C36,C37 on JB5 01674423ECUV1H471JCVCHIP CAPACITOR (1608TYPE) C30
33、,C31 on JB2 01674567ECJ1VB1H562KCHIP CAPACITOR (1608TYPE) C13,C44 on CB C14 on JB3 01674612ECJ1VB1H103KCHIP CAPACITOR (1608TYPE) C4,C8,C32 on JB3 01674701ECJ1VF1E104Z 0.1UF/16VKCHIP CAPACITOR (1608TYPE) C5-C12,C14,C16,C19,C21,C22, C23,C25,C26,C27,C29,C31,C33, C36,C37,C38,C41,C43,C47 on CB. C3 on PB.
34、 C11,C28,C38 on JB30 F536750347/6.3VCHIP CAPACITORC26 on JB1 SAFETY PRECAUTION: The parts marked have safety-related characteristics. Use only listed parts for replacement. CONSIDERATIONS ON PARTS ORDERING When ordering any parts listed in the parts list, please specify the following items in the or
35、der sheet. QTYPART NUMBERDESCRIPTIONMODEL NUMBER Ex.1022575241Sharp keyC-20/50 152247017300Knob (orange)DAC-15D Failure to completely fill the above items with correct number and description will result in delayed or even undelivered replacement. The parts marked # are new (initial parts). CB - CENT
36、ER BOARD ASSY, PB - PANEL BOARD ASSY, JK - JACK BOARD ASSY RC-20May. 2001 7 F536754210/16VCHIP CAPACITORC2,C20,C28,C30,C32 on CB. C4-C9 on PB. C24,C34,C35 on JB14 F5367546100/16VCHIP CAPACITORC18 on CB. C23,C29,C40 on JB4 02341489ECPU1C474MA5MYLAR CAPACITOR(SUBMICRON)C10 on PB. C1,C9,C10 on JB4 INDU
37、CTOR, COIL, FILTER F2449209SLF7032T-151MR37-2(150UH)COILL16 on JB1 F2449210SLF7032T-4R7M1R7-2(4.7UH)COILL15 on JB1 02563478NFM4516P13C204FEMI FILTERC21 on JB1 12449381SBT-0460TFEMI FILTERL14 on JB1 #12449386SBT-0180WEMI FILTERFL1 on JB1 00903167N2012Z601T02FERRITE-BEAD (CHIP)L1-L7 on CB. L1-L10,L12,
38、L13 on JB19 CRYSTAL, RESONATOR 01899745AT-41CD2 6.4MHZCRYSTALX3 on CB1 00901912MA-406 24.576MHZ TE24CRYSTALX2 on CB1 CONNECTOR F343916053015-0210 2P P=2MMCONNECTORCN6 on JB1 #F3439165A2001WR2-10PCONNECTORCN3 on CB1 #F3439166A2001WR2-11PCONNECTORCN2 on CB1 #F3439167A2001WR2-14PCONNECTORCN1 on CB1 #F3
39、439164A2001WR2-8PCONNECTORCN1 on JB1 WIRING, CABLE G34771463P L=40 x5x5 MM P=2MMRIBBON CABLECN3 on JB to CN4 on JB1 #G3487222WIRING 8PCN3 on PB to CN1 on JB1 #G3487221WIRING 10PCN1 on PB to CN3 on CB1 #G3487220WIRING 11PCN2 on PB to CN2 on CB1 #G3487219WIRING 14PCN2 on JB to CN1 on CB1 G3487163WIRIN
40、G BATTERYL=80MM 2P1 SCREWS H5019430SCREW 2.6x5BINDING HEAD TAPTITE P FEZC2 H5019110SCREW 3x6PAN HEAD TAPTITE-2 FEZC12 H5029325SCREW 3x6PAN HEAD TAPTITE-2 BZC5 H5019115SCREW 3x8PAN HEAD TAPTITE-2 BZC2 H5029850SCREW M4x6HEXAGON SOCKET BUTTON HEAD FENI4 H5029852SCREW 4M3HEXAGON SOCKET BUTTON HEAD FEBZC
41、2 40123545JACK NUT M9x11x2NI5 40016467JACK WASHER M9.2x14x0.5FENI5 H5039521VR ACCESSORY NUT M75 H5039413NYLON WASHER M4.1x7.5x0.5BLACK2 H5039414NYLON WASHER M5.1x9.5x0.5BLACK2 40011923WASHER M9.1x13INTERNAL TOOTH2 H5039324 MINI JACK NUT M6FENI1 PACKING #G2567114CD PACKAGE1 G2607212PACKING CASE LOWER
42、1 #G2627136PACKING CASE UPPER1 H2679505POLYETHYLENE BAG220 x340 x0.031 G2237614REAR PAD1 G2237613SIDE PAD1 MISCELLANEOUS G2257130BATTERY INSULATING SHEET1 G2177309BATTERY TERMINAL(-)1 G2177308BATTERY TERMINAL(+)1 G2177307BATTERY TERMINAL(+/-)1 G2357111CUSHION R2 G2257131INSULATING SHEET BOTTOM1 G2257129INSULATING SHEET CENTER1 F2539803LABEL CAUTIONFCC/CE/C-TICK/EMC1 02123845LEAF A2 G2197126LED GUIDE
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