Boss Roland RC-20xl Schematic
Sep.2004
TABLE DF CONTENTS
RC-20XL
SERVICE NOTES
Issued by RJA
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.......................13
SERIAL DUMP (SYSTEM UPDATE, USERS
DATA SAVE AND LOAD) ..............13
INSTRUCTIONS FOR FACTORY RESET ...................14
TEST MODE.....................................................................14
BLOCK DIAGRAM.........................................................19
CIRCUIT BOARD (PANEL) ..........................................20
CIRCUIT DIAGRAM (PANEL).....................................22
CIRCUIT BOARD (JACK)..............................................24
CIRCUIT DIAGRAM (JACK 1) .....................................26
CIRCUIT DIAGRAM (JACK 2) .....................................28
Copyright © 2004 ROLAND CORPORATION
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) (TP)17058256E0
Sep.2004
CAUTIONARY NOTES
User data status
User data status after each of the following processes is described below.
Whenever carrying out procedures that involve deleting or erasing user data,
always be sure to back up the user data to some form of external media (refer
to Saving and Loading Data).
Process
Checking Version number Preserved
SERIAL DUMP Deleted
Test Mode Preserved
* Executing Test Mode during Factory Reset deletes the user data.
User Data
PARTS LIST
Due to one or more of the following reasons, parts with parts code ********
cannot be supplied as service parts.
• Part supplied only as a component in a complete assembly
• Copyright does not permit the part to be supplied
• Part is sold commercially
SPECIFICATIONS
Nominal Input Level
INST: -20 dBu (variable)
MIC: -40 dBu (variable)
AUX IN: -10 dBu
Input Impedance
INST: 1 M ohms
MIC: 1 k ohms
AUX IN: 47 k ohms
Nominal Output Level
OUTPUT: -20 dBu
Output Impedance
1 k ohms
AUX IN Jack (Stereo miniature phone type)
PHRASE SHIFT Jack (1/4 inch TRS phone type)
REVERSE Jack (1/4 inch phone type)
OUTPUT Jack (1/4 inch phone type)
AC Adaptor Jack
Power
DC 9V: Dry battery (R6/LR6 (AA) type) x 6
AC Adaptor (PSA-series)
Power Consumption
120 mA (9 V max.)
* Expected battery life under continuous use:
Carbon: 6 hours
Alkaline: 16 hours
These figures will vary depending on the actual conditions of use.
Dimensions
173 (W) x 158 (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 11 oz (including batteries)
Accessories
Owner’s Manual ENGLISH:(#G6017384)
JAPANESE:(#G6017382)
Leaflet (“USING THE UNIT SAFELY,” “IMPORTANT NOTES,” and
“Information”):(#********)
Dry battery (AA type) x 6:(#********)
Sound Library for RC-20XL (Sample Phrase CD):(#********)
Options
AC Adaptor (PSA-series)
Foot Switch (FS-5U)
*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.
Recommended Load Impedance
10 k ohms or greater
Internal Memory
Recording time: 16 min. (max.)
Maximum number of saved phrases:
11 phrases (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 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, INST & MIC,
NORMAL, CENTER CANCEL, FLAT AMP SIMULATE
Connectors
INST Jack (1/4 inch phone type)
MIC Jack (1/4 inch phone type)
2
RC-20XL
3
Sep.2004
LOCATION OF CONTROLS
fig.panel
30
19
30
31 31
4
LOCATION OF CONTROLS PARTS LIST
PART CODE CATEGORY PART NAME DESCRIPTION Q’TY
NO
1 G2017145 CASING TOP CASE 1
2 G2187530 CASING PEDAL R 1
3 G2187531 CASING PEDAL L 1
4 G2357116 CASING PEDAL PLATE 62X53 2
5 H5029851 CASING PEDAL SHAFT 2
6 G2217185 CASING PANEL 1
7 H5029855 SCREWS SCREW M4X8 HEXAGON BUTTON HEAD NI 4
8 F3279802 POTENTIOMETER POTENTIOMETERNO CLICK 50KB RD901-40-125F-B54-00D 2
9 F3279803 POTENTIOMETER POTENTIOMETER 11 CLICKS 50KB RD901-40-125F-B54-11D 1
10 F3279805 POTENTIOMETER POT.(W/O CLICK) RD901-40-125F-AF5-00D 250KA 2
11 G2477122 KNOB,BUTTON R-KNOB 5
12 G247751001 KNOB,BUTTON VGA KEYTOP S BLACK WITH LENS 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 1
18 F5029124 DIODE LED (GREEN) L-34GDSY 2
19 15029342 DIODE LED GL3ED8 1
20 F5029126 DIODE POWER LED L-113GDT 1
21 G2527110 CASING REAR PANEL PANEL 1
22 F344941501 JACK,EXT TERMINAL ADAPTOR JK KM02009BB 1
23 F3449707 JACK,EXT TERMINAL PHONE JK(STREO) HTJ-064-12DS 1
24 13449155MF JACK,EXT TERMINAL PHONE JACK (MONO) HTJ-064-12I 3
25 F3449709 JACK,EXT TERMINAL 3.5MM MINI JACK SHJ-3513TS (STEREO) 1
26 G2017621 CASING BATTERY COVER 1
27 75D422E000 CASING BOTTOM COVER 1
28 G2357118 MISCELLANEOUS BOTTOM FOOT 2
29 G2537558 MISCELLANEOUS QUICK MANUAL&CAUTION LABEL 1
30 F3129306 SWITCH SWITCH SKQKAB 6
31 13129778 SWITCH TACT SWITCH SKQKAh 2
RC-20XL
5
Sep.2004
EXPLODED VIEW, EXPLODED VIEW PARTS LIST
EXPLODED VIEW1
fig.explo-1
7
6
RIGHT SIDE
h
g
8
2
LEFT SIDE
9
1
5
i
3
4
EXPLODED VIEW 1 PARTS LIST
[PART]
NO
PART CODE PART NAME DESCRIPTION Q’TY
1 G2017145 TOP CASE 1
2 G2357111 CUSHION R 2
3 H5029851 PEDAL 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
[SCREW]
NO PART CODE PART NAME DESCRIPTION Q’TY
g H5029852 SCREW4M3 FEBZC HEXAGON SOCKET BUTTON HEAD 2
h H5039413
i H5039414
NYLON WASHER M4.1X7.5X0.5
NYLON WASHER M5.1X9.5X0.5
BLACK 2
BLACK 2
6
EXPLODED VIEW 2
fig.explo-2
21
24
RC-20XL
k
c
33
26
32
33
32
EXPLODED VIEW 2 PARTS LIST
[PART]
PART CODE PART NAME DESCRIPTION Q’TY
NO
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
[SCREW]
NO PART CODE PART NAME DESCRIPTION Q’TY
c H5029855 SCREW M4X8 HEXAGON BUTTON HEAD NI 4
k H5039521 VR ACCESSORY NUT M7 5
7
Sep.2004
EXPLODED VIEW 3
fig.explo-3
12
18
17
16
11
a
10
a
13
Magnified view
14
j
15
EXPLODED VIEW 3 PARTS LIST
[PART]
PART CODE PART NAME DESCRIPTION Q’TY
NO
10 G2017148 BOTTOM COVER 1
11 G2357118 BOTTOM FOOT 2
12 G2017621 BATTERY COVER 1
13 G2017620 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
Refer to Fig A
Magnified view
[SCREW]
NO PART CODE PART NAME DESCRIPTION Q’TY
a H5019115 SCREW M3X8 PAN TAPPING-2 FEBZC 7
j H5019430 SCREW M2.6X5 BINDING HEAD TAPTITE P FEZC 2
8
EXPLODED VIEW (Fig. A)
fig.explo-4
b
34
RC-20XL
19
22
46
b
m
20
1
25
e
f
EXPLODED VIEW(Fig. A) PARTS LIST
[PART]
NO
PART CODE PART NAME DESCRIPTION Q’TY
1 G2017145 TOP CASE 1
19 75E183M000 JACK BOARD ASSY 1
20 75E183P000 PANEL BOARD ASSY 1
22 G225712901 INSULATING SHEET CENTER 1
25 G2527110 REAR PANEL 1
34 ********
46 G2147821 JACK HOLDER 1
[SCREW]
NO PART CODE PART NAME DESCRIPTION Q’TY
b H5019110 SCREW M3X6 PAN TAPTITE FEZC 13
e H5039510 NUT M9X12X2 FENI 5
f H5039112 WASHER M9 5
m H5039324 MINI JACK NUT AJ324A-3C 1
This PWB ASSY is inclueded the JACK BOARD ASSY.
1
9
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