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Feb.2003
ME-50
SERVICE NOTES
TABLE OF CONTENTS
SPECIFICATIONS............................................................. 2 LOCATION OF CONTROLS .......................................... 4 LOCATION OF CONTROLS PARTS LIST ................... 4 EXPLODED VIEW ............................................................ 6 EXPLODED VIEW PARTS LIST ..................................... 8 PARTS LIST...................................................................... 10 CHECKING THE VERSION NUMBER....................... 13 RESTORING THE FACTORY SETTINGS................... 13 TEST MODE..................................................................... 13 BLOCK DIAGRAM......................................................... 20 CIRCUIT BOARD............................................................ 22 CIRCUIT BOARD............................................................ 24 CIRCUIT DIAGRAM...................................................... 26
Issued by RJA
Copyright © 2003 ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the written permission of ROLAND CORPORATION.
17058813E0
Printed in Japan (0800) (AS)
Feb.2003
SPECIFICATIONS
ME-50: Guitar Multiple Effects
Power Supply
DC 9 V: Dry batteries (R6/LR6 (AA) type) x 6, AC Adaptor (PSA series: Optional)
AD Conversion
24 bit + AF method (*)
Current Draw
120 mA * Expected battery life under continuous use: 3.5 hours 12 hours Carbon: Alkaline:
DA Conversion
24 bit
Sampling Frequency
44.1 kHz
These figures will vary depending on the actual conditions of use.
Dimensions
384 (W) x 225 (D) x 102 (H) mm 15-1/8 (W) x 8-7/8 (D) x 4-1/16 (H) inches
Patches
30 (user)
Weight
3.15 kg / 7 lbs (including batteries)
Effects
Tone Modify Compressor Overdrive/Distortion Chorus Phaser Flanger Harmonist Tremolo Pan Vibrato UNI-V Rotary Delay Reverb Noise Suppressor (Effects for Expression Pedal) Foot Volume Wah Resonance Voice Ring Modulator Bend (+1 OCTAVE, -1 OCTAVE)
Accessories
Owner's Manual ENGLISH :(#G6017362) JAPANESE :(#G6017361) Dry Batteries (Alkaline: LR6 (AA) type) x 6:(#********)
Options
AC Adaptor: BOSS PSA series Foot Switch: BOSS 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. AF method (Adaptive Focus method) This is a proprietary method from Roland that vastly improves the signal-tonoise (S/N) ratio of the A/D and D/A converters.
Nominal Input Level
INPUT: -10 dBu AUX IN: -10 dBu
Input Impedance
INPUT: 1 M ohms AUX IN: 100 k ohms
Nominal Output Level
-10 dBu
Output Impedance
2 k ohms
Display
7 segments, 1character LED
Jacks
INPUT jack GUITAR AMP jacks L(MONO)/R AUX IN jack (Stereo Mini type) PHONES/LINE OUT jack AC Adaptor jack
2
ME-50
3
Feb.2003
ME-50
LOCATION OF CONTROLS
fig.panel
25
24
23
22
21
20
19
1
17,18
15,16
14
2,4 3,4 1 5,6,18 2,4 3,4 29 1 13
12
7 8
26
9
10
27
28
11,4
LOCATION OF CONTROLS PARTS LIST
NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 PART CODE 1502928100 F3279803 F3279802 G2477122 F5029117 G247751001 G2027904 G2187193 G2187602 G2227301 F3279804 G2187547 G2357125 15029106 PART NAME LED (RED) POTENTIOMETER 11 CLICKS 50KB POTENTIOMETERNO CLICK 50KB R-KNOB LED VGA KEYTOP S BLACK WITH LENS TOP COVER BOTTOM COVER SWITCH PEDAL PEDAL ESCUTCHEON POTENTIOMETER 6 CLICKS VR PEDAL PEDAL PLATE LED DESCRIPTION L-34HDSL RD901-40-125F-B54-11D RD901-40-125F-B54-00D L-312LRD NO 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 PART CODE G2047001 F5029408 G247751301 F3129306 G1147002 13449155MF 13449440 13449150MF F3159111 F3449717 F2367103 G2217733 G2217734 G2217735 F3279782 PART NAME 7SEG COVER LED VGA KEYTOP S WITHOUT LENS SWITCH REAR PANEL PHONE JACK (MONO) JACK PHONE JACK (STEREO) SLIDE SW JACK CORD HOOK PEDAL LABEL PEDAL LABEL PEDAL LABEL POTENTIOMETER DESCRIPTION A-601H SKQKAB HTJ-064-12I HSJ0857-01-210 HTJ-064-12D SK22F02 HEC2392-01-150 (OD/DS) (MOD) (DELAY) RK11K1140(10K SPECIAL B-CURVE)
RD901-40-125F-B54-06D 50KB
LD002VB
5
Feb.2003
EXPLODED VIEW
fig.explo1
6
ME-50
fig.explo2
7
Feb.2003
EXPLODED VIEW PARTS LIST
[PARTS]
NO PART CODE PART NAME 1 G2027904 TOP COVER 2 G2187193 BOTTOM COVER 3 G1147002 REAR PANEL 4 G2047001 7SEG COVER 5 G2187547 VR PEDAL 6 G2187910 PEDAL HOLDER 7 G2147119 BOLT HOLDER 8 G2357125 PEDAL PLATE 9 G2357122 REAR CUSHION 10 G2357111 CUSHION R 11 G2147806 STAY 12 G2217733 PEDAL LABEL 13 G2217734 PEDAL LABEL 14 G2217735 PEDAL LABEL 15 G2227301 PEDAL ESCUTCHEON 16 G2187602 SWITCH PEDAL 17 G2177103 SUPPORT SPRING 18 G2357126 PEDAL FOOT 19 G247751001 VGA KEYTOP S BLACK WITH LENS 20 G247751301 VGA KEYTOP S WITHOUT LENS 21 G2477122 R-KNOB 22 F2367103 CORD HOOK 23 G2357120 FOOT 24 G2017617 BATTERY CASE 25 G2027602 BATTERY COVER 26 G2177304 BATTERY TERMINAL (+ -) 27 G2177305 BATTERY TERMINAL (+) 28 G2177306 BATTERY TERMINAL (-) 29 75E013P000 MAIN SHEET ASSY 30 F3467025 WIRING 2P MAIN SHEET ASSY includes the following parts. 31 ******** EXP BOARD ASSY DESCRIPTION
(OD/DS) (MOD) (DELAY)
H=7.6
H=5
[SCREWS]
NO a b c d e f g h k m n o p q r s t u PART CODE H5039521 H5039520 H5039126 H5039514 H5039121 H5039510 H5039112 H5029331 H5029332 H5029308 H5029330 H5019124 H5019130 H5029867 H5039122 H5039515 H5019154 H5039111 PART NAME VR ACCESSORY NUT M7 M9 NUT M9 WASHER NUT M6 WASHER 9.5X6.5 NUT M9X12X2 WASHER M9 SCREW 3X8 SCREW 3X6 SCREW 3X10 SCREW M3X8 SCREW M3X6 SCREW M3X6 HEX BOLT M6X70 PLAIN WASHER NUT M6 SPRING WASHER PLAIN WASHER 3X8 DESCRIPTION
HSJ-0999-01-190 HSJ-0999-01-210 FENI BINDING S-TIGHT FEBC BINDING S-TIGHT FEBZC BINDING S-TIGHT FEBC BINDING TAPTITE P BZC PAN MACHINE W/SW+SMALL PW ZC PAN MACHINE W/SW+PW ZC HALF THEREAD BZ 6X13X1 BZC U BZC 6X12X1 ZC
8
ME-50
9
Feb.2003
PARTS LIST
fig.part1e
SAFETY PRECAUTIONS: The parts marked have safety-related characteristics. Use only listed parts for replacement.
CONSIDERATION ON PARTS ORDRING
When ordering any parts listed in the parts list, please specify the following items in the order sheet. QTY PART NUMBER DESCRIPTION MODEL NUMBER Ex. 10 22575241 Sharp Key C-20/50 15 2247017300 Knob (orange) DAC-15D Failure to completely fill the above items with correct number and description will result in delayed or even undelivered replacement.
NOTE: The parts marked # are new. (initial parts)
CASING #
# # # #
G2047001 G2017617 G2027602 G2187193 G2227301 G1147002 G2187602 G2027904 G2187547
7SEG COVER BATTERY CASE BATTERY COVER BOTTOM COVER PEDAL ESCUTCHEON REAR PANEL SWITCH PEDAL TOP COVER VR PEDAL
1 1 1 1 3 1 3 1 1
CHASSIS # #
G2187910 G2147806
PEDAL HOLDER STAY
1
KNOB,BUTTON # G2357120 F2367103 G2477122 G247751001 G247751301 FOOT CORD HOOK R-KNOB
VGA KEYTOP S BLACK WITH LENS
H=5
VGA KEYTOP S WITHOUT LENS
4 1 20 1 4
SWITCH # # 13129778 F3129306 F3159111 SKQKAH SKQKAB SK22F02 TACT SWITCH SWITCH SLIDE SW SW7,8,9 SW1,2,3,4,6 SW5 3 5 1
JACK,EXT TERMINAL 13449150MF 13449155MF # F3449717 13449440
HTJ-064-12D HTJ-064-12I HEC2392-01-150 HSJ0857-01-210
PHONE JACK (STEREO) PHONE JACK (MONO) JACK JACK
JK6,4 JK1,2,3 JK7 JK5
2 3 1 1
PWB ASSY #
75E013P000
MAIN SHEET ASSY
1
IC 01672634 15209102 F5199110 F5289101 03123889 F5279309 F5179607 02231767 F5279520 03123901 15189261 01125012 02451434 TC74HC4052AFT(EL) M51957BFP S-81233SGY NJM2100M 8P SOP HD6433687 BU2090F-E2 CAT24WC32J RA0A-101 (TC223C080AF-101) LC32V4265T-25-TLM LT1616 M5218AFP-600E NJM4556AM AK4552VT IC TTL IC (SYSTEM RESET) IC (REGURATOR) IC (OP.AMP) IC (MASK CPU) IC (LED DRIVER) IC (EEPROM) IC (DSP) IC (DRAM) IC (DC-DC) IC (BIPOLAR OP AMP) IC (BIPOLAR OP AMP) IC (AD/DA) IC4,7,10 IC3 IC19 IC2 IC11 IC16,17 IC15 IC8 IC12 IC14 IC1,5,18 IC6 IC3 3 1 1 1 1 2 1 1 1 1 3 1 1
# # # # # # #
TRANSISTOR 15309104 15319107 15319115 15329103 2SA1586-GR(TE85R) 2SC4116-GR(TE85R) 2SC4213-A(TE85L) 2SK880GR-TE85R TRANSISTOR TRANSISTOR TRANSISTOR FET TRANSISTOR Q6 Q9 Q2,3,4,5 Q1 1 1 4 1
10
ME-50
DIODE 1502928100 15029106 F5029408 F5029117 15339119 F5339137 L-34HDSL LD002VB A-601H L-312LRD 1SS-352 SS14 VF=0.45V LED (RED) LED LED LED DIODE DIODE LED2,3,6,79,10,11,12,13,14,15,16,17,19,20,21 LED4,8 LED5 LED18 D1,3,5,6 D4,7 16 2 1 1 4 2
#
RESISTOR F5419707 F5419705 F5419726 F5429366 F5399914 F5399951 F2569127 00566867 00567023 00567156 00567289 00567412 00567556 00567167 00567290 00567301 00567190 00567078 00567334 00567089 00567345 00566967 00567112 00567245 00567378 00567256 00567134 F5429365 F5429386 CRN34101J CRN34103J CRN34473J 15K OHM F RANK (1%) 6.8KF 68(1/2W) CHIP MINISMDC075 RPC05T 100 J RPC05T 101 J RPC05T 102 J RPC05T 103 J RPC05T 104 J RPC05T 105 J RPC05T 122 J RPC05T 123 J RPC05T 153 J RPC05T 222 J RPC05T 271 J RPC05T 273 J RPC05T 331 J RPC05T 333 J RPC05T 470 J RPC05T 471 J RPC05T 472 J RPC05T 473 J RPC05T 562 J RPC05T 681 J 10K OHM F RANK (1%) 150K F (1608TYPE) RESISTOR ARRAY RESISTOR ARRAY RESISTOR ARRAY RESISTOR (CHIP) RESISTOR RESISTOR POLY SWITCH MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR MTL.FILM RESISTOR CHIP RESISTOR CHIP RESISTOR RA1,2,3,4,6 RA7,9 RA8,10,11 R79 R82 R39,52 R80 R33,70 R20,61,100 R9,10,26,27 R1,2,5,6,7,13,16,21,22,28,29,35,36,38,42,46, R12,63 R12,R63 R101 R86,89 R4 R85 R102,103,104,105,106,107,108,109 R95,99 R122 R3,11,23,77,78,81,84,87,88,138,139,141,145,1 R83,91 R94,112 R17,32,44,56,58,59,140,142 R15,31,37,40,41,45,47,48,51,54,55,60,129,133 R127,131 R92,93,110,111,113,114,115,116,117,118,119, 1 R24 R18 5 2 3 1 1 2 1 2 3 4 30 18 2 1 2 1 1 8 2 1 2 2 2 8 14 2 16 1 1
#
POTENTIOMETER F3279802 F3279804 F3279803 # F3279782
RD901-40-125F-B54-00D RD901-40-125F-B54-06D 50KB RD901-40-125F-B54-11D
RK11K1140(10K SPECIAL B-CURVE
POTENTIOMETERNO CLICK 50KB
POTENTIOMETER 6 CLICKS
POTENTIOMETER 11 CLICKS 50KB
POTENTIOMETER
VR3,4,6,7,8,10,11,12,13,14,15,18,19,20,21 VR2 VR5,9,16,17 VR1
15 1 4 1
CAPACITOR F5349704 F3629110 F3629700 01674612 01674501 01674512 01674712 01674701 01674167 01674467 01674189 01674356 F3629708 F3629701 F3629703 ECPU1C474MA5 0.47 100U/16V (H=7MM) 10U/16V (H=7MM) ECJ1VB1H103K ECJ1VB1H182K ECJ1VB1H222K ECJ1VF1A105Z ECJ1VF1E104Z 0.1UF/16VK ECUV1H100DCV ECUV1H102JCV ECUV1H120JCV ECUV1H151JCV 0.22U/50 1/50 47/16
MYLAR CAPACITOR (SUBMICRON)
#
# # #
CHEMICAL CAPACITOR CHEMICAL CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CAPACITOR CAPACITOR CAPACITOR
C4 C5,28,39,54,76,85,107,108,111,113,117,119,12 C2,9,10,11,12,16,19,20,22,23,24,25,31,42,49, C116 C37,53 C1,7,14 C130 C18,26,29,30,32,34,38,45,46,47,48,59,60,61,6 C3,8,21,35,36,51,52,128,129 C95 C100,101 C44,58 C56,41 C33 C66
1 19 17 1 2 3 1 58 9 1 2 2 2 1 1
INDUCTOR,COIL,FILTER F5409131 # F2449226
QT04-60 SLF7032T-100M 10UH
EMI COIL
L1 L3
1 1
CRYSTAL,RESONATOR F5299306 02672401
HC-49SM 10.000MHZ SG-8002JC 67.7376MHZ PC
CRYSTAL CRYSTAL
X1 X2
1 1
CONNECTOR F3439123 F3439160 A2001WR2-3P 53015-0210 2P P=2MM CONNECTOR 3P CONNECTOR CN2 CN3 1 1
11
Feb.2003
WIRING,CABLE # #
F3467025 F3467024
WIRING 2P WIRING 3P
1 1
SCREWS # H5039111 H5039515 H5019124 H5019130 H5039121 H5039514 H5029867 H5039510 H5029330 H5029332 H5029308 H5029331 H5039122 H5019154 G2147119 H5039520 H5039126 H5039521 H5039112 WASHER D8D3T0.5 NUT M6 SCREW M3X6 SCREW M3X6 WASHER 9.5X6.5 NUT M6 HEX BOLT M6X70 NUT M9X12X2 SCREW M3X8 SCREW 3X6 SCREW 3X10 SCREW 3X8 PLAIN WASHER SPRING WASHER BOLT HOLDER M9 NUT M9 WASHER VR ACCESSORY NUT M7 WASHER M9 ZC U BZC
PAN MACHINE W/SW+SMALL PW ZC
# # # #
# #
PAN MACHINE W/SW+PW ZC HSJ-0999-01-210 HSJ-0999-01-190 HALF THEREAD BZ FENI BINDING TAPTITE P BZC BINDING S-TIGHT FEBZC BINDING S-TIGHT FEBC BINDING S-TIGHT FEBC 6X13X1 BZC 6X12X1
2 1 8 8
for Phones Jack
with VR RK11K1140 with VR RD901-40 for Phones Jack
1 5 6 6 1 10 1 1 2 1 1 20 5
PACKING # # #
G2627753 G2267501 G2267502
PACKING CASE PAD L PAD R
1 1 1
MISCELLANEOUS # G2199505 # G2199506 # G2357126 # G2217733 # G2217734 # G2217735 G2177304 G2177305 G2177306 G2357111 G2147127 # G2357125 G2357122 G2177103
LED SPACER LED SPACER PEDAL FOOT PEDAL LABEL PEDAL LABEL PEDAL LABEL BATTERY TERMINAL (+ -) BATTERY TERMINAL (+) BATTERY TERMINAL (-) CUSHION R DC JACK HOLDER PEDAL PLATE REAR CUSHION SUPPORT SPRING
LED-7A LED-15A H=7.6 (OD/DS) (MOD) (DELAY)
15 3 3 1 1 1 2 1 1 1 1 1 2 3
ACCESSORIES (Standard) # G6017361 # G6017362 40232389
OWNER'S MANUAL OWNER'S MANUAL WARRANTY CARD
JAPANESE ENGLISH FOR BOSS JAPAN ONLY
1
12