This is the 43 pages manual for Akai S 900 Service Manual.
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AKA] 55mm mnnunl e
MIDI DIGITAL SAMPLER
System ..................... Digital sampling Communlcauon RS-232C or EQUIVALENT
Sampling frequency: 7.5 kHz ~ 40 kHz External itch MIDI (IN. OUT, THRU)
(MIN ~ MAX) REC triggerx 1
Sampling time: 63.3 sec. ~ 1 1.75 sec. Mic input/PB triggerx 1
(MAX ~ MIN) " Line input/PBtriggerx 1
Voice: 3 Voice Line output x 8
Flange: 6 Oct-vs Stereo output x 2 (LB)
Stone. ..................... Built-in FLOPPY DISK DRIVE Mix output x 1
Memory capacity: 1 M byte Voice output x 1 (13 PIN/DIN)
Memory Medium: 3.5 inch (200) Dimensions .............. 482.6 (W) x 1326 (H) x 41 O (D) mm
BOTH SIDE. DOUBLE TRACK. (EIA Rack mount/3U)
DOUBLE DENSITY Weight ..................... 10.8 kg
lntemal memory: 750K byte
Mum sampling 32
Edn Scanning (ONE SHOT, LOOPING.
Velocity cross fade
Positional cross fade
Attack pitch offset (- Velocity)
LFO (delay. rate. depth)
Filter (Key tracking, Velocity)
' For imptovement purposes, speciﬁcations and design are subject to change without notice.
PRECAUTIONS DURING SERVICING
1. Parts identiﬁed by the A symbol parts are critical
for safety. Replace only with parts number speciﬁed.
2. In addition to safety, other parts and assemblies are
speciﬁed for conformance with such regulations as
those applying to spurious radiation.
These must also be replaced only with specified
Examples: RF converters, tuner units, antenna
selector switches, RF cables,noise blocking capacitors,
noise blocking ﬁlters, etc.
3. Use speciﬁed internal wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
4. Use speciﬁed insulating materials for hazardous live
parts. Note especially:
1) Insulation Tape
2) PVC tubing
3) Spacers (Insulating Barriers)
4) Insulation sheets for transistors
5) Plastic screws for ﬁxing microswitch (especially
5. When replacing AC primary side components (trans-
formers, power cords, noise blocking capacitors, etc),
wrap ends of wires securely about the terminals
6. Observe that wires do not contact heat producing
parts (heatsinks, oxide metal film resistors, fusible
7. Check that replaced wires do not contact sharp
edged or pointed parts.
. Also check areas surrounding repaired locatoinsi
, Use care that foreign objects (screws, solder droplets,
etc.) do not remain inside the set.
SAFETY CHECK AFTER SERVICING
Confirm the specified insulation resistance between
power cord plug prongs and externally exposed parts
of the set is greater than 10 M ohms, but for equipment
with external antenna terminals (tuner, receiver, etc.)
and is intended for or I, specified insulation re
sistance should be headphone jacks line-in-out jacks etc.
more than 2.2 M ohms (ground terminals, microphone
PRECAUTION FOR THE LITHIUM BATTERY
The LITHIUM BATTERY employed for memory Back
up has a explosive probability when the BATTERY
itself is excessive heated.
IN CASE OF REPLACING: RESOLDER and SOLDER
AS RECOMMENDED WAY.
[DANGER] [RECOMMENDED WAY]
SYMBOLS FOR PRIMARY DESTINATION
Alphabet indicates the destination of the units as listed
Europe (except UK)
W. Germany only
( E V B S Model only)
Before connecting the power cord. SET the VOLTAGE
SELECTOR located on the rear panel with a screwdriver
so that the correct voltage is indicated.
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