Akai ASK90 - User Manual

AKAT Service MANUAL
MIDI DIGITAL SAMPLER
MODEL $900
MODEL ASK9O
DRUM INTERFACE
SPECIFICATIONS
System
.............cesee00
Digital
sampling
Communication.......
RS-232C
or
EQUIVALENT
Sampling frequency: 7.5 kHz ~ 40 kHz External jack............ MIDI (IN, OUT, THRU)
(MIN ~ MAX) REC trigger x 1
Sampling time: 63.3 sec. ~ 11.75 sec. Mic input/P.B trigger x 1
(MAX ~ MIN) * Line input/P.B trigger x 1
Voice: 8 Voice Line output x 8
Range: 6 Octave Stereo output x 2 (LR)
Storage.............--0000 Built-in FLOPPY DISK DRIVE Mix output x 1
Voice output x 1 (13 PIN/DIN)
Dimensions............... 482.6 (W) x 132.6 (H) x 410 (D) mm
(EIA Rack mount/3U)
Memory capacity: 1M byte
Memory Medium: 3.5 inch (2DD)
BOTH SIDE, DOUBLE TRACK,
DOUBLE DENSITY SNE saxcecisecscerccsasnce
Internal memory: 750K byte
Multi sampling ........ 32
BAG sivctctssciesinisieesines Scanning (ONE SHOT, LOOPING,
ALTERNATING)
AD.S.R (Velocity-Attack,
Velocity-Release)
Velocity cross fade
Velocity switch
Positional cross fade
Attack pitch offset (— Velocity)
LFO (delay, rate, depth)
Filter (Key tracking, Velocity)
* For improvement purposes, specifications and design are subject to change without notice.

Summary

SPECIFICATIONS

System Details

Details on sampling frequency, time, voice, and range.

Storage Details

Information on internal memory and floppy disk drive compatibility.

Multi sampling and Edit Functionality

Covers multi-sampling capabilities and editing functions.

Communication, Dimensions, & Weight

MIDI interface, physical size, and unit weight specifications.

SAFETY INSTRUCTIONS

Servicing Precautions and Safety Checks

Guidelines for safe repair, component handling, and post-service testing.

Lithium Battery and Voltage Selection

Precautions for the memory backup battery and voltage selection.

DISMANTLING OF UNIT

CONTROLS AND CONNECTIONS

ADJUSTMENT PROCEDURES

Amplifier Offset Adjustment Procedures

Guides for setting REC and PB amplifier off-set voltages.

FDD BLOCK DISASSEMBLY AND ASSEMBLY

MIDI IMPLEMENTATION CHART

PARTS LIST

RECOMMENDED SPARE PARTS LIST

PC BOARD PARTS LIST

VOICE BLOCK DIAGRAM

FDD BLOCK SCHEMATIC DIAGRAM

DRUM INTERFACE SCHEMATIC DIAGRAM

PCB SCHEMATICS

POWER SUPPLY AND PANEL SCHEMATICS

VARIOUS PCB SCHEMATICS

Akai ASK90 Specifications