ROLAND A 50

Page 1

FEB, 1989

MIDI KEYBOARD CONTROLLER

SERVICE NOTES

SPECIFICATIONS
KEVBOARD ----- "~76kav, with Veiocitv and Polyphonic aflertouch
LCD DISPLAV 240 x 64 dots dispIay
CONTROL PEDAL 1 FC1 - F01
0V (00) - SV (71)
PATCH SHIFT
ON 5V; OFF 0V --------- (Pedal switch)
DIMENSIONS --------------------------------------------- 1198(W) x 2895(D) X 8901) mm
47-3/16(W) x 11-3/B(D) x 3-1/2(H) in,
WEIGHT ~~~~~~~~~~ 2 19/265 lb
CONSUMPTION 8W (100V, 117V)/10W (220V, 240V)
ACCESSORIES Owner's Manual Japan35926025251
English 26025252
Power cord 100V 23495112
117V 1&199109
220V 23495125
24OV-E 13495110
240V»A 23495124
Pedal switch (DP»2) 7710610000
OPTIONS ..................................................... Keyboard stand KS-B
RAM card M-256D, M-256E
Pedal switch D1312, DP-G
Volume pedal EV-S

MIDI/SYNC cables

MSG-0711 5/25/5011 00

Bender Lever Assy
PB»A0102
(23275892)

Escutcheon RD-3oo Knob
(22225332) (22485126)
Pot.
Bender Wheel Assy EWA-NP5X1OB14
BW A0000
(23275893) (13339476)
Side Board L
(21 125334)

S-10 Button D black

- (single) with LED window
gzfiHSggmh (22475656)
(13169693) LED "3d
SLR-55VC3F
(15029222)

A-50 Button D gray
(single) with LED window
(22495577)

LED red

SLR-55VC3F

(15029222)

Keyboard (76 key)
SK-376-DW
(7620420000)

TABLE OF CONTENTS Em Page
EXPLODED VIEW 4m- 2
PARTS LIST Ir-y u 2 (~ 3, 4
Fiyst Edztzon KEYBOARD ASSY mam-v U x I 4
DATA SAVE/LOAD ?- 7 t - 7/I:I - F 5, 6
TEST MODE _ 22 I E- F 6-8
IDENTIFYING VERSION NUMBER /\-~>a >7-//\-0)6E§8 8
RECOVERING FACTORY DATA Iiswfisfimai- £513 8
BLOCK DIAGRAM 71: .7 7| 9
KEYBOARD ms 10, 11
MAIN-A BOARD x 1 > A§1E 12,13
MAIN»B BOARD x 1 > B §(& 12, 13
MEMORY CARD BOARD x E U -71- (gm 12,13
SWITCH-A BOARD x 1 «7 2 A £415? 14
SWITCH-B BOARD x 1 «y 2 B £15 14
JACK-A BOARD 9'11 ., 7 A £111? 15
JACK-B BOARD «71 v 7 B £1)? 15
POWER SUPPLY BOARD gfigfli 16
FILTER BOARD 7 1)L« 7 -§1§ 16
IC DATA IC 7-:- 7 17,16
CHANGE INFORMATION EEWR 19, 20
- Card Holder
(22200188)
AAC Inlet - P. Cover A-50 Card Holder
CM-11 (3P) (22025413) (22205246)
(13429713) ASwitch IC Card Connector
ESE-371 1 7508095A
A§VVIQ2§144 (13169503) (13429233)
(1 31491 08)
DC) :1 ° (:17
LCD Cover j
(22045134) 1-4-1 1
TEQ-mA-aoTAI RUbber F°°t Pot- - 5
(15029483) (22355334) 340 Button 3 black EVJ-ELA-EOZBM - MIDI Socket - Jack mono :
LCD Holder (single) (13279810) M-SZ-SP YKB-21-5074 ;
(22205242) (22475658) (13429642) (13449275) Bottom
(21 135180)
(2231' e I
5 16
RoIand A.SD ,
Side Board R
(21 125333)

@Roland

Printed in Japan AI-2 (CR) 1