Akai s 950 service manual

Page 1

AKA] senums mnnunl.

MIDI DIGITAL BAMPLEH

MODEL 5950

SPECIFICATIONS M
System ........... Digital sampling Velocity switch
Sampling frequncy : 7.5 kHz - Positional cross fade
48kHz(MIN - MAX) Time Stretch
Sampling time :6335 see - 9.79 sec Pitch warp
(MIN - MAX) LFO(delay rate. depth)
Voice : 8 Voice Filter(l(cy tracking Velocity
Range :6 Octave KD.S.R)
Storage ........... Built- in FLOPPY DISK DRIVE Sample merge
Memory capacity: 1 Mbytez(2DD) Communication . . . . RS-232C or equivalent
Mommy Medium- 3 5 inch MICRO Externuliack -. . . . . . MIDmN. OUT. THRU)
,_. _, M __ _~ My 2 LOPP) Dlsx _ .,_ use Input :1 1
' ' mp ZHD) Linc input x1
Internal memory: 750 K byte REC/PB "Inger x |
(Expansion memory Line output X 8
is adaptable) Stereo output X 2 (L R)
Multi sampling ..... 99 Mix output X 1
Edit .............. Scanning(ONE SHOT, LOOPING, Voice output X l (13 PIN/DIN)
ALTERNATING) Dimensions . , 482.6(W) X 132.6(H) X 410(D) mm
i A.DtS.R(Vclocity-Attack, Velocity Weight ............ 10.8 kg
Release)
I

' For improvement purposes. specifications and design are subject to change wlthout notlce.

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*SAFETY INSTRUCTIONS

PRECAUTIONS DURING SERVICING

1. Parts identified by the as (*) symbol are critical for
safely. Replace only with parts number specified.

2. In addition to safety, other parts and assemblies are spe~
cified for conform ance with such regulations as those ap-
plying to spurious radiation.

These must also be replaced only with specified replace-
ments.

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 in
turntable)

5. When replacing AC primary side components (trans
farmers. power cords. noise blocking capacitors,
ctc.). wrap and: of wires securely about the terminals
belorc soldering.

natal?"

6. Observe that wires do not contact heat producing
pans(hcatllnks,uxldametalwmrcslnorsJustblere-
slums. ole.)

* INFORMATION

SYMBOLS FOR PRIMARY DESTINATION

Alphabet indicates the destination of the units as listed
below.

5 bols Princi al Destinations

E exce tU
Ja an

E:

[3; Australia
W. German onl
Universal Area
Custom version

7. Check that re placed wires do not contact sharpedged
or pointed parts.

8. Also check areas surrounding repaired locations.

9. Usecarethat foreign objects (screws, solder droplets,
etc.) do not remain inside the set.

SAFETY CHECK AFTER SERVICING

After servicing, make measurements of leakage-current or
resistance in order to determine that exposed parts are ac
ceptably insulated from the supply circuit.

The leakage-current measurement should be done between
accessible metal parts (such as chassis, ground terminal.
microphone jacks, signal-input/output connectors, ctc.)
and the earth ground through a resisterof 1 500 ohms paral-
leled withaO.15 chapacitor, underthe unitsnormalwork-
ing conditions. The leakage-current should be less than 0.5
mA rrns AC.

The resistance measurement should be done between ac-
cessible exposed metal parts and power cord plug prongs
with the power switch (it included) ON. The resistance
should be more than 2.2 Mohms.

[DANGER] [RECOMMENDED WAY]

VOLTAGE CONVERSION
(E V B S Model only)

Before connecting the power cord. Set the VOLT-
AGE SELECTOR located on the rear panel with a
Icrewdriver so that the correct voltage in indium-d.

W-

[l

220V 240V
VOLTAGE SELECTOR