Roland MT-32 Service Notes

OCT. 1988
(3rd)
MT-32
fS/IT"
3S
ISERViCE
NOTES
mra
Edition
SPECIFICATIONS
Sound
Sources
Preset Tones
Sampling Frequency
Data Format
Noise Level
Current Draw
Power Consumption
(AC adaptor
input)
Dimensions
Weight
Accessories
32 polyphonic
128
32KHZ
15-bit linear
-80dBm
(IHF-A) or
less
@25°C
(77°F)
650mA @9V
10W @100V
9.5W @117V
10.5W
@220-240V
51 (H) X 305 (W) X 220 (D)
mm
2 X 12 X 8-11/16 in (Including
feet)
1 .5
kg. 3
lb
6 oz
AC
Adaptor
ACB-100 100V
ACB-120 117V
ACB-220 220V
ACB-240A 240V
(Australia)
ACB-240E 240V (England)
MIDI
Cable (DIN Cord) (1m)
1
pc
Connection Cord LP-25
2 pcs
Owner's manual (revised edition)
Japanese (2701046600)
English (2701046700)
PLEASE SEE PAGE
4
FOR DIFFERENCE
BETWEEN
MT-32 (NEW) and (OLD).
4
H T
V
3
> ^
APPLICABLE TO THE FOLLOWING SERIAL
NUMBERS
The
products with these serial
numbers have
a
PHONE
jack.
The main board(7937731 001
,
new
type)is
employed
for the
products.
Z
(/)
'>
'J
T
fl/T
> zs'- i;(±z\
y
Kds >
-y
\
-J
'7
^ ^
4 7°(Z)zt-
'7-J-
>zs'-7937731001
To
(";i-y<T" m MT-32!iot^TiJ;T5e#M)
—
Japanese only
—
"5a.
—
MT-32
DM-32N-3
Z940150
VM
DM-32N-4 Z943600
VXW
DM-32N-7 Z940750
(ILTie<7)'>
'J
TJI^J- 7
fL-h -v y
7 4 4
7
t>zt-793773100iyf^)fl$
nr
ty\
^7 K*
> '/> 7
to
"5a-v<T"ffl MT-32
DM-32N-3
Z940150
- Z940249
DM-32N-4 Z943600 - Z944599
DM-32N-7 Z940750 - Z941149
All
switches
SKELAF
(13129736)
Button
(single,
4
pcs)
(22495180)
Button
(single, 6 pcs)
(22495181)
Top Cover
(2202035300)
Front Panel
(2221080500)
LCD
Cover
—
(2204011100)
LCD
Unit
DM2011
(15029456)
Knob
1
(2248014000)
Pot.
RK12K1140 50KB
(13279832)
LED
(green)
GL-9PG2
(15029189)'
Roland
(First Edition
AUG. 1987 BA-2, Second Edition
JAN. 1988
BC-2) Printed
in
Japan ai-2(lh) 1
TABLE OF CONTENTS @
'A
Page
EXPLODED VIEW
Tsm
2
CIRCUIT DESCRIPTION
3
BLOCK DIAGRAM
7"n
7
712 3
DIFFERENCE BETWEEN
MT-32 (NEW) and (OLD)
MT-32tfl0zf-y
3
4
PARTS
LIST
/r-y
')
X
h
-4,5
TEST
MODE
rx
F
K '•6
,
7
LCD UNIT
LCDxx.y
F
7
SW
BOARD X
T
7
f'S®
7
VR BOARD
zH
'j
^
7
MAIN
BOARD
A
^
y
•8
,
9
1C
DATA
I
C
X
-
^
10
CHANGE
INFORMATION 11