Roland DJ-70 Service Notes

July,
1992
ERRATA
&
SUPPLEI\€I\IT
i
s
attached
at
the end
of
the
page.
^
DJ-70
DJ-70
SAMPLING WORKSTATION
TABLE
OF CONTENTS
SPECIFICATIONS
DISASSEMBLY
LOCATION OF
CONTROLS
PARTS
LIST
FOR EXPLODED VIEW
(NO.
1
)
PARTS
LIST
FOR
EXPLODED VIEW
(NO.
2)
KEYBOARD PARTS
LIST
PARTS
LIST
FOR
EXPLODED VIEW OF SCRATCH
•
•
PARTS
LIST
BLOCK DIAGRAM
HOW
TO INSERT THE
TWO
OMS-770
(SIMM)
TO EXPAND
MEMORY
IDENTIFYING VERSION
NUMBER
RESTORING THE FACTORY PRESETS DATA
TEST
MODE
1C
DATA
CONTROLS PCB ASS'Y
(or
CONTROLS BOARD)
CONTACT PCB ASS'Y w/RUBBER
CONTACT
(or
CONTACT BOARD
w/RUBBER CONTACT)
LED PCB ASS'Y
(or
LED BOARD)
SCRATCH ENCODER
ASS'Y
SCRATCH
ENCODER ASS'Y
POTENTIOMETER
ASS'Y
HEADPHONES PCB ASS'Y
(or
HEADPHONES BOARD)
ANALOG
PCB ASS'Y
(or
ANALOG
BOARD)
DIGITAL PCB ASS'Y
(or
DIGITAL
BOARD)
SERVICE
NOTES
First Edition
Page
1
1
2
3
4
5
5
6
7
7
8
7
7-^7 F
ij
-
•
7°U-t?'y F
•
F'(7):^)i 8
F"E
-
K
8
~11
1C
12
CONTROLS
PCB ASS'Y
(or
CONTROLS
BOARD)
13
CONTACT PCB
ASS'Y
w/RUBBER
14
CONTACT
(or
CONTACT BOARD
w/RUBBER CONTACT)
LED PCB
ASS'Y
(or
LED BOARD)
15
SCRATCH ENCODER
ASS'Y
SCRATCH
15
ENCODER
ASS'Y
POTENTIOMETER
ASS'Y
15
HEADPHONES PCB
ASS'Y 15
(or
HEADPHONES BOARD)
ANALOG
PCB ASS'Y
(or
ANALOG
BOARD)
16,
17
DIGITAL
PCB
ASS'Y
(or
DIGITAL
BOARD)
18,
19
i±m
(
•?
CO
1 )
7
U
7
F
•••
mm
(f(0
2
)
F-"
F
/\°-7
U
7
F
7P
'y
7H1
7^
(^Roland
17059654
Printed in
Japan (AGDO)
(CR)
1
SPECIFICATIONS/ftm
©KEYBOARD
:
37keys with
velocity.
©MAX. POLYPHONY
:
24
voices
©INPUT IMPEDANCE
:
10k
ohm
©INPUT LEVEL
:
+4 dBm
to
—50 dBm
continuous variance.
©OUTPUT IMPEDANCE
:
200 ohm. (stereo out
(R, L))
©RESIDUAL
NOISE
:
More than
—80
dBm.
(Volume:Max., Input shorted, IHF-A
type.)
—Sampling System—
©SAMPLING
RATE
;
44.1kHz, 22.05kHz
©DATA
FORMAT
:
16
bit
Linear with
Dl
method.
©A/D
:
16
bit
©D/A
:
20
bit
©SOUND MEMORY
:
Standard :2M
byte.
(Fully
expanded :4M
byte
by OMS-770)
©SIGNAL
PROCESSING
:
TVF
(LPF, BPF, HPF, RING),
TVA
on 24
bit.
©FREQUENCY
RESPONSE
:
20 Hz to 20k Hz.
(+0/-3
dB)
©DYNAMIC RANGE
;
More
than 87 dB.
(1
Voice
at
rated output)
©TOTAL
HARMONIC DISTORTION ••••
:
Less than 0.01%. (A/D
-
D/A)
—Disk Drive System—
©FLOPPY DISK DRIVER
;
FZ-357 318F1R0. (both
2HD and 2DD)
©POWER CONSUPTION
:
24W. (100V/1 17V/230V/240VA/240VA)
©DIMENSIONS
:30-23/32(W) x 12-3/32(H) x
4-3/8(D) inches.
780(W) X 330(H) x 126(D)
mm
©WEIGHT
:
18 lbs 15 oz. / 8.6kg.
©ACCESSORIES (STANDARD)
:
Owner's Manual
(English)
:
PNo.K6018125
Owner's Manual
(Japanese)
:
pNo. ********
Demo
Disk
:
PNo.7695234000
AC
Cord (detachable/#BiijU
DC-320-J01 (100V)
:
PNo. 13439825
498/3SVT 2X18AWG-VII
(117V)
:
PNo.13499151RI
XVII-H03VVH2F-2X0.75-VII (230V)
:
PNo.13499149RI
SA/V3-OD3CCFC3X0.75-V (240VA)
:
PNo.13499150RI
BS/13/H05VV-F3G0.75-V
(240VE)
:
PNo.1 34991 52RI
©OPTIONS
:
Pedal Foot Switch (DP-2/6, FS-5U)
2M
byte
RAM Memory
Expander (OMS-770)
3.5 inch Floppy Disk (MF-2HD (2HD), MF-2DD (2DD))
©SAMPLING
RATE/TIME
2M
byte (standard)
4M
byte (expanded)
22.5
sec. (44.1
kHz) 45
sec. (44.1
kHz)
45
sec.
(22.05kHz) 90
sec.
(22.05kHz)
—
Display
System
—
©DISPLAY
;
LCD. (64 x 240 dots)
*
OdBm
=
0.775
Vrms