ROLAND SC 55

Page 1

Apr.1991

5OUNDOO/7VOS

MIDI SOUND GENERA TOFI 80-55

80-55

SERVICE NOTES

First Edition

EPRATA &SLPPLEMB\ITis attached at the erdof the page. 0
DDDDDDDDDDDDDDDDDD

TABLE OF CONTENTS

- SPECIFICATIONS

- EXPLODED VIEW

- PARTS LIST

~ TEST MODE
'IDENTIFYING VERSION NUMBER
- FACTORY SETUP

° BULK DUMP

~ BLOCK DIAGRAM

° CIRCUIT COMPONENTS
-CIRCU|T BOARD DIAGRAM
' CIRCUIT DIAGRAM

- IC DATA

E& Page
{i5 ................................. I
fifig- ............................... 2
/\°_.\y|JX I ......................... 3
5-2 It . :E- F .................... 4-7
/\-~ja y o j-y/t-wiggg ........... 8
777FU-"IZ'yI7v7n '''''''' 8
/\")I,g . gyj ....................... 8
ju.yg[§ ........................... 9
@EBIfiEfiICJLVC ..................... 9

SPECIFICATIONS Hifi

. scum) GENERATOR ......................................... :

.MEMORY CAPACITY ......................................... :
.DISPLAy .............

OMIDI ~~~~~
oouqu

. INPUT ........................................................ :
0 POWER CONSUMPTION ................................
. DIMENSIONS ................................................. :

o WEIGHT ...................................................... :
. ACCESORIES ................................................. :

Number or parts 16 (include Rhythm part)

Maximum PoIIphony 24 (partials)

Reverb (8 types)

Chorus (8 types)

Vibrato

TVF (Cutoff Frequency. Resonance)

Envelope (Attack, Decay, Release)

WAVE ROM 3 Mbyte (315 Tones+10 Rhythm Setups)

~:Custom LCD 70.6x24.5mm (with backlight orange)
~:|Nll IN2 (front). OUT, THRU

Headphone jack (mini type) lmpeadance 2009
RCA Din (L/FI) lmpeadance 2km
RCA pin (L/Fl) lmpeadance 50k!)

~ : SOOmA/ DCSV (AC Adaptor)

218 (W)x233 (D)x44 (H) mm
8-9/16"x9-3/16"x1-3/4

1.5 kg (3 lb 5 oz)

Remote Control Unit (No,13169726) x 1
Lithium Battery CR2025 (N0112569596) x1
Stereo Audio Pin Cable 1m (No.23485265) x1
MIDI Cable 1m (No.23485228) x1

AC Adaptor x1

A ACl-l OOJ (N0112449603J0)

CHANGE INFORMATION fiifiw """"""""""""" 15-17 A ACI-120J (N0112449604J0)
A ACI-220J (No.12449605J0)
A ACE-240E (No.12449564)
A ACE-240A (No.12449549)
Owner's Manual Setxl
Japanese (Not26045414)
English (No.26045415)
.OPTIONS ---------------------------------------------------- :BOSS RAD-50 (Rack mount adaptor)
Specifications are subject to change without notice.
Display Cover
(2204531 1)
Knob Display Uni! Button Top Cover
(22485188) (15029520) (22495607) (22025538)
I I Front View Rear View
POWER VOL ME PART INSTRUMENT
PART INSTRUMENT Roland ALL (
D-p OI)-
STANDBY J LEVEL PAN . LEVEL PAN L WIQISI' IN 1 SOUND Canvas DgoIJN Ev
' mm; ems 5 WE EREVEEIRB ECHOEEUS MIDI SOUND GENERATOR 929
2 o o o o o o
D o @ :7??:::7??$:EG:EE KEY SHIFT MIDI CH - magnum POI GUSSICDM' WINCDEVICI - © -
MIDI IN 2 PHO ES PART EZIEEIIEIIEEI IN UT OUTPUT ,
SOUND Canvas ' MADE ' JAPAN PWSUAMTTOEUIFARIJOFARTISO Fccnutlsl I 2:: fig :II'ERACQINE:
| l I L____ L__J
Jack Front Panel Ass'y Rubber Foot Pin Jack MIDI Jack Bottom Chassis Jack
YKBZ1-5092 (22215927) (22355160) YKC21-3049 YKF51-5046 (22815783) HEC2305-01-250
(13449277) (13449645) (13429273) (13449720)
Card Hook
M'D' Ja°k (22365708)
TC85031-15»4151
(13429684)
@Roland 17059560 Printed in Japan AI-2 (DP) 1 Copyright © 1991 by ROLAND CORPORATION

Page 2

SC-55
EXPLODED VIEW/fifiEl

Panel removal screws.
leL/wrrxvéilbim

Remove the screws in numerical order
§%l|l§lcif~9&9lbc< Ti'élo

- PARTS - - PARTS No.-
(D Knob ~~~~~~~~~~~~~~~~ : 22485188
(2) Front Panel Ass'y : 22215927
© Button ------------------ : 22495607
@ Switch Board 1 ------- : 7962808000
© Front Holder Ass'v : 7962817000
© Display Cover --------- : 22045311
6) Display Unit --------- : 15029520
Main Board ~~ ~ ~ ~ ~ ' ~: 7962805000
(9 Bottom Chassis ~: 22815783
69 Rubber Foot ~ ~: 22355160
® Cord Hook ~~~~~ '1 22365708
® Top Cover ~~~~~ -: 22025538

- SCREWS -

Top Cover/ l~ w 7 - 73A-
1(st

Front Panel/7D J |\ - AER/Ix

2.®x4

M3x6
M3x6
M3x8
M3x10
M3x6
M2x6

®®©©®®

B-Tight Binding
B-Tight Flat
P-Tight Binding
Machine Binding

Machine Binding with Internal Tooth Washer
P-Tight Binding

Apr.1991