Akai mpc 2000 service manual version

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akai mpc 2000 service manual version

Extracted text from akai mpc 2000 service manual version (Ocr-read)


Page 2

-k SAFETY INSTRUCTIONS

PRECAUTIONS DURING SERVICING

1. Parts identified by the A (*l symbol are critical for
salety. Replace them onlywith the parts number specified.

2. In addition to safety, other parts and assemblies are
specified tor 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, RFcabIes, noise blocking capacitors,
noise blocking filters, etc.

3, Use specified internal wiring. Note especially:
1) Wires covered Wllh PVC tubing
2} Double insulated wires
3) High voltage leads

A Use specified insulating materials for hazardous live
parts.
Note especially:
t) Insulation Tape
2) PVC tubing
3) Spacers (insulating barriers)
4) Insulation sheets for transistors
5) Plastic screws for fixing micro switches

5. When replactng AC primary side components
(transformers, power cords, noise blocking capacitors,
etc). wrap the ends of the wires securely around the

terminals before soldering.

6. Make sure that wires do not contact heat producing
parts (heat sinks, oxide metal Iilm resistors. lusihle
resistors, etc.).

7t 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, solderdroplets,
etc) do not remain inside the set.

on

* INFORMATIONS

SAFETY CHECK AFTER SERVICING

Alter servicing, make measurements of leakage-current
or resistance in order to determine that exposed parts
are acceptably insulated Item the supply circuit.

The leakage-current measurement should be done be-
tween accessible metal parts (such as chassis, ground
terminal, microphone iacks, signal tnpUI/omput connectors,
etc.) and the earth ground through a resistor of 1500
ohms paralleled with a 0.15 uF 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 (it included) -ON". The
resistance should be more than 2.2 M ohmsr

SYMBOLS FOR PRIMARY DESTINATION

Unit destinations are indicated with letters as shown below,

Symbols Principal Destinations
A U.S.A

B UK

O Canada
-E9 Europe (except U.K)
L Japan
Australia
Germany
Universal Area
Custom version

SERVICE MANUAL