Mitsubishi HS-U778 Specifications download pdf (Page 6)

2. Hot Check

The test sequence, with reference to the measuring

circuit in the figure is as follows:

(1) With switch S1 open, connect the VCR to the measuring

circuit. Immediately after connection, measure the

leakage current using both positions of switch S2 and

with the switching devices in the VCR in all of their

operating positions.

(2) Close switch S1, energizing the VCR, and immediately

after closing the switch, measure leakage current using

both positions of switch S2, and with the switching

devices in the VCR in all of their operating positions.

Repeat the current measurements of items (1) and (2)

after the VCR has reached thermal stabilization. The

leakage current should not be more than 0.5 mA.

AC Leakage Test

Avoid shock hazards. Do not connect this VCR to a TV

antenna, cable or accessory that exhibits excessive leakage

currents. If available, the television instrument or cable to

which this VCR is connected should have the antenna cold

check and leakage current hot check performed.

PRECAUTIONS

Handling and storage

• Avoid using the VCR in the following places:

- extremely hot, cold or humid places,

- dusty places,

- near appliances generating strong magnetic fields,

- places subject to vibration,

- poorly ventilated areas.

• Be careful of moisture condensation.

• If you pour a cold liquid into a glass, water vapor in the air

will condense on the surface of the glass. This is called

moisture condensation.

• Moisture condensation on the head drum, one of the

most critical parts of the VCR, will cause damage to the

tape.

• The VCR is equipped with a moisture condensation

prevention circuit. This circuit operates only when the unit

is attached to an AC outlet.

• Handle the VCR carefully.

• Do not block the ventilation openings.

• Do not place anything heavy on the recorder.

• Do not place liquids on the top cover of the recorder.

• Use the Recorder in horizontal (flat) position only.

• Avoid violent shocks to the recorder during packing and

transportation.

• Before packing, be sure to remove the cassette from the

recorder.

120V

(GROUNDING)

OPEN

VCR

GROUNDING SUPPLY CONDUCTOR

AC MILLIAMMETER

INSULATING

TABLE

1 2 3 4 5 6 7 8 9 10 11 ... 83 84

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Mitsubishi HS-U778 Specifications Page 6

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