Akai MPC2000 Service Manual

*
SAFETY
INSTRUCTIONS
PRECAUTIONS DURING SERVICING
1. Parts identified by the A (#) symbol are critical tor
safety. Replace them only with the 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 the specified replacements.
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 micro switches
5. When replacing AC primary side components
(transformers, power cards, noise blocking capacitors,
etc.), wrap the ends of the wires securely around the
terminals before soldering.
Ye à > 1
6. Make sure that wires do not contact heat producing
parts (heat sinks, oxide metal film resistors, fusible
resistors, etc.).
7. Check that replaced wires do not contact sharp edged
or pointed parts.
. Also check areas surrounding repaired locations.
9. Make sure that foreign objects (screws, solder droplets,
etc.) do not remain inside the set.
e
* INFORMATIONS
SAFETY CHECK AFTER SERVICING
After servicing, make measurements of leakage-current
or resistance in order to determine that exposed parts
are acceptably insulated from the supply circuit.
The leakage-current measurement should be done be-
tween accessible metal parts (such as chassis, ground
terminal, microphone jacks, signal input/output connectors,
elc.) and the earth ground through a resistor of 1500
ohms paralleled with a 0.15 pF capacitor, under the unit's
normal working conditions. The leakage-current should
be less than 0.5 mA rms AC.
The resistance measurement should be done between
accessible exposed metal parts and power cord plug
prongs. with the power switch (if included) "ON". The
resistance should be more than 2.2 M ohms.
SYMBOLS FOR PRIMARY DESTINATION
Unit destinations are indicated with letters as shown below.
Symbols
Principal Destinations
U.S.A
U.K
Canada
Europe (except U.K)
Japan
Australia
Germany
Universal Area
Custom version
SERVICE MANUAL

Akai MPC2000 Specifications

General

Type	Sampler/Sequencer
Polyphony	32 voices
Sampling Rate	44.1 kHz
Bit Depth	16-bit
Memory	2 MB (expandable to 32 MB)
Pads	16 velocity-sensitive pads
Sequencer	Yes
Sequencer Resolution	96 PPQN
MIDI	In/Out/Thru
Display	Backlit LCD
Storage	3.5" floppy disk drive
Effects	No built-in effects
Outputs	8 individual outputs
Inputs	2 inputs
Audio Inputs	2 (L/R)
Power Supply	Internal