Akai CD 62 Service Manual

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Akai CD 62 Service Manual

Extracted text from Akai CD 62 Service Manual (Ocr-read)


Page 2

* SAFETY INSTRUCTIONS

PRECAUTIONS DURING SERVICING

1. Parts identified by the A (*) Symbol 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
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 microswitch (especially in
turntable)

5. When replacing AC primary side components (transform-
ers, power cords, noise blocking capacitors, etc), wrap
ends of wires securely about the terminals before soldering.

\fiw 9%?-

6. Observe that wires do not contact heat producing parts
(heatsinks, oxide metal film resistors, fusible resistors,
etc.).

* INFORMATION

7. Check that replaced wires do not contact sharp edged or
pointed parts.

8. Also check areas surrounding repaired locations.

9. Use care that 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 detemine that exposed parts are
acceptably 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, etc.)
and the earth ground through a resister of 1500 ohms
paralleled with a 0.15 [41- 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 accessi-
ble exposed metal parts and power cord plug prongs with the
power switch (if included) -ON-. The resistance should be
more than 2.2 Mohms.

SYMBOLS FOR PRIMARY DESTINATION
Alphabet indimtes the destination of the units as listed below.

Symbols Principal Destinations

USA

UK

Canada

El Europe (except UK)

Japan

[El Australia
W. Germany only
Universal Area
Custom version

SERVICE MANUAL