Roland S-770 Service Notes

MAR. 1990
S-770/RAS-770
S--77D/RAS--77a
ISERVICE
NOTES
IC5IXAL
SAMPLER/
MEMORY
BDARO
Edition
SPECIFICATIONS (S-770)
• DIMENSIONS
16-7/8 (w) X
5-3/16
(h) x
16-1/2
(d)
in.
430 (w) X 132 (h) X
420
(d)
mm
• WEIGHT
12kg /26
lb.
7 oz.(when memory
is fully
expanded)
•
POWER COMSUMPITION
40W
•
ACCESSORIES
Owner's Manual English (1 pc)
26033393
Owner's Manual Japanese
(1
pc) 26033392
Mouse MU-1 ECM-M1312
(1
pc) 22433517
Midi
Cable 2.5M
(1
pc) 23485135
System Disk 3.5" Flopy Disk (2DD)
(1
pc)
22403189
Rack Mounting Angle (2 pcs)
22123621
Overlay sheet for
RC-100
(1 pc)
26033391
AC
Cord
100V DC-320-J01
(1 pc)
13439825
117V UC-704-J01 0
pc)
13439812F0
220V EC-210-E06
(1
pc)
1
343981 3F0
240VE 5722-660-4606
(1
pc) 23495110
240VA SC-415-J06
(1
pc)
1
343981 4F0
•
OPTIONS
Pedal Foot Swich DP-2/6,
FS-5U
Memory
Board
with
2Mbyte RAM RAS-770
(Max.
RAM
14Mbyte)
Memory Expander OMS-770 (2Mbyte
RAM
for
FiAS-770)
CRT
Cable
RGB-25N/RGB-25I
3.5" Floppy Disk 2HD
(MF2-HD)/2DD
(MF2-DD)
Remote
Controller
RC-100
CD-ROM
Player CD-
5
Magnet Optical Disk Unit
MO-
7
• SAMPLING RATE/
TIME
•
Disk Drive
3.5"Flopy Disk Drive (for both
2HD
and 2DD)
40Mbyte Hard Disk Drive
•
EDIT
DISPLAY
LCD 64
X
240
dots
RGB CRT OUT 200
x
320
dots
Monochrome Composite
•
SAMPLING
SYSTEM
Sampling Rate 48K, 44.1 K, 24K, 22.05K Hz
Data Format 16bit Liner with the Dl
Method
A/D
16bit
D/A
20bit
Sound Memory Standard 2Mbyte
(Fully
expanded 16Mbyte by RAS-770)
Signal Processing
TVF
(LPF, BPF, HPF, RING).
TVA
on 24bit
Frequency Response 20Hz to
20KHz (t-0/-3dB)
Dynamic Range More Than 87dB
(1 voice at Rated Output)
Total
Harmonic
Distortion
Less Than 0.01% (A/D-D/A)
•
INPUTS
XLR
In :
Impedance
1
0kOhm
Level L +
4dBm
M
- 1
0dBm
H -50dBm
Standard In
:
Impedance lOkOhm
Level
+ 4dBm
to -
50dBm Continuous Variance
•
OUTPUTS
Max Polyphy
:
24voice
Individual Out
;
Impedance 1.6Kohm
Level -1-1
dBm (Max
Level at
1
Voice Filter off.Volume Max)
-h
13dBm (Max
Level at 16Voice Filter off.Volume Max)
Residual Noise (input shorted.
IHF-A
type) more than
-85dBm
(Volume Max)
Stereo Out (R.L)
;
Impedance 1.6Kohm
Level
-I-
7dBm (Max
Level at
1
Voice Filter off.
Volume Max)
+ 19dBm (Max
Level at
16Voice
Filter off.
Volume Max)
Residual
Noise
(input shorted.
IHF-A
type)
more than -80dBm (Volume Max)
•
INTERFACE
Digital
Audio Interface I/O (conforms to CP- 340)
Optical
& Coaxial
SCSI Interface (external HD.
CD-ROM.
Magnetic Optical Disk)
• EXT CONTROLLER
TTL
Level
[M
Roland
Printed
in
Japan AI-2
(DP)
i
TABLE OF CONTENTS
Page
LOCATION OF CONTROLS
2
EXPLODED VIEW
3
PARTS
LIST
u
7^
F
4,
5
MOUSE
(MU-1) -707.
(MU-
1)
5
DISASSEMBLY PROCEDURES
6
BLOCK DIAGRAM 7
7
CIRCUIT
DESCRIPTIONS
mmm
8
CHECKING
(PLL CIRCUIT) (PLL0S§)
9
TROUBLESHOOTING
h
7
7'J\/7
=L
- d
yO' 9
TEST
MODE
5^7
h
—
K
10,
1 1
"S-770
CHECK
DISK"
MANUAL
"S-770 CHECK
DISK"
wmm
12-
14
NOTE
(REPLACEING INTERNAL
HARD
DISK)
Kx'-<
14
1C
DATA lC^-0
15
ANALOG BOARD
Ti~o0"7t(-
1
F 16,
17
POWER SUPPLY BOARD
—
F 16,
17
MAIN BOARD
T
V
/fx
—
F 18, 19, 21
SWITCHING
POWER
SUPPLY
XT
X'® 20
I/O
BOARD
I/OtK'— K 20
RGB CABLE RGBX-7/F
21
JACK BOARD
0
^
"j
0
—
1
22
PANEL BOARD
K
22
VOLUME BOARD
7ft'
U
ZL
—
AtK'- - K
22
CHANGE INFORMATION
23
SPECIFICATIONS
1
PARTS
LIST
1
MEMORY
BOARD
U-zIt-
K
2,
3
TIMING
BOARD
2,3
*
CAUTION
!
:
Always make
a back
up copy
of hard disk data.
*
Copyright
©
1990 by
ROLAND CORPORATION