Roland RC-20 Specifiche

SERVICE NOTES Issued by RJA Copyright © 2004 ROLAND CORPORATION All rights reserved. No part of this publication may be reproduced in any form withou

10Sep.2004 PARTS LIST fig.part1eSAFETY PRECAUTIONS:The parts marked have safety-related characteristics. Use only listed parts for replacement.NOTE

11RC-20XL 1Z DIODE # F5019309 02DZ5.1-Y ZENNER DIODE D9 on PB 1 F5029126 L-113GDT POWER LED LED17 on PB 1 F5029125 L-34YDSL LED (YELLOW)

12Sep.2004 # F5409117 NFM4516P13C204F EMI FILTER C80 on JK 1 12449386 SBT-0180W EMI FILTER FL1 on JK 1 F2449209 SLF7032T-151MR29-2(150UH

13RC-20XL CHECKING THE VERSION NUMBER 1. Completely turn down all volume controls. 2. Hold down the left pedal (ON/OFF) and right pedal (TAPL/MEMORY

14Sep.2004 INSTRUCTIONS FOR FACTORY RESET The RC-20XL can be restored to its original factory settings with the following procedure. Restoring the fa

15RC-20XLExiting Test Mode Turn off the power Explanation of each test item 1.FLASH ROM check • Enter Test mode.• The FLASH ROM check will be perform

16Sep.2004 6.DA check • Once again check the output wavwform at the point that “5.GUIDE volume check” is completed, to check the DC leakage and level

17RC-20XL 11.AUX IN (NORMAL) check • Set the PHRASE SELECT volume to the ‘6’ position.• Verify that “LOOP QUANTIZE” is dark and “LOOP PHRASE” is lit.

18Sep.2004 Always check the battery after repairing or servicingthe product.Skipping directly to the desired test• Enter Test mode.• The FLASH ROM che

19RC-20XLBLOCK DIAGRAMfig.block.epsCN6CN4CN5+3.3VDC/DCCONVERTERIC16OUTPUTREVERSEPHRASESHIFTSDRAMIC1CPUIC3FLASHMEMORYIC6RESET ICIC6SWLEDGATE ARRAYIC4IC

2Sep.2004 CAUTIONARY NOTES User data status User data status after each of the following processes is described below.Whenever carrying out procedure

20Sep.2004CIRCUIT BOARD (PANEL)fig.b-panel-1fig.b-panel-2View from components sideView from foil side

21RC-20XL

23Sep.2004 RC-20XL22 CIRCUIT DIAGRAM (PANEL)INSTPOWERPEAKEXITNORMALINSTMICONESHOTTO CN3 ONJACKBOARDOVERDUBTAPTEMPO(red)LOOPPHRASEWRITEPLAYRECAUTOSTAR

24Sep.2004CIRCUIT BOARD(JACK)View from components sideView from foil side

25RC-20XL

27Sep.2004 RC-20XL26 CIRCUIT DIAGRAM (JACK1)INSTMICAUX_IN*0.47/16S = Submicron Chip CapacitorREVERSEPHASESHIFTOUTPUTINST OUTINST INTO CN2 ONPANELBOAR

29Sep.2004 RC-20XL28 CIRCUIT DIAGRAM (JACK 2)fig.c-digitalH:IC1 SELECTSD_SEL TO CN1 ONPANELBOARDL:IC2 SELECTSDRAM SELECTTO ANALOG BLOCKCD_PRTCTAUX_C.

30Sep.2004

3RC-20XL

4Sep.2004 LOCATION OF CONTROLS fig.panel193031 3130

5RC-20XL LOCATION OF CONTROLS PARTS LIST NOPART CODE CATEGORY PART NAME DESCRIPTION Q’TY1 G2017145 CASING TOP CASE 12 G2187530 CASING PEDAL R 13 G21

6Sep.2004 EXPLODED VIEW, EXPLODED VIEW PARTS LIST EXPLODED VIEW1 fig.explo-1 EXPLODED VIEW 1 PARTS LIST [PART][SCREW] NOPART CODE PART NAME DESCRIPTI

7RC-20XL EXPLODED VIEW 2 fig.explo-2 EXPLODED VIEW 2 PARTS LIST [PART][SCREW] NOPART CODE PART NAME DESCRIPTION Q’TY21 G2477122 R-KNOB 524 G2217185 P

8Sep.2004 EXPLODED VIEW 3 fig.explo-3 EXPLODED VIEW 3 PARTS LIST [PART][SCREW] NOPART CODE PART NAME DESCRIPTION Q’TY10 G2017148 BOTTOM COVER 111 G23

9RC-20XL EXPLODED VIEW (Fig. A) fig.explo-4 EXPLODED VIEW(Fig. A) PARTS LIST [PART][SCREW] NOPART CODE PART NAME DESCRIPTION Q’TY1 G2017145 TOP CASE