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Unlike many other appliances, the microwave oven is high-voltage,
high current equipment. Though it is free from danger in ordinary
use, extreme care should be taken during repair.
PRECAUTION: :
Sayicanien should remove their wwatthes whenever working
plese to or replacing the magnetron.
8-1. Check the ground.
Do not operate on a 2-wire extension cord. The microwave
oven is designed to be used when grounded. It is imperative,
therefore, to make sure that the oven should be grounded prior
to repair.
8-2. Warning about the electric charge in the high voltage
capacitor
As an electric charge in the high voltage capacitor remains for
about 30 seconds after operation stops, short the current
between the oven chassis and the negative terminal of the
high voltage capacitor, by using a screwdriver before replacing
or checking parts.
er
: Touch chassis side first then short to the high voltage
capacitor terminal by using a screwdriver or jumper
wire.
8-3. When parts must be replaced, remove the power plug
from the outlet
8-4. When the 1.6 Amp fuse is blown out by the operation of
the interlock Monitor switch:
(A) Replace the primary, door sensing and interlock monitor
switches. This is mandatory. Refer to page 8 for the necessary
adjustments of these switches.
(B) When replacing the fuse, confirm that it has the appropriate
rating for this model.
8-5. Avoid inserting any foreign materials, etc. through any
hole in the unit during operation.
Never insert any foreign materials or any other metal object
through the lamp hole on the cavity or any other holes or gaps,
because such objects may work as an antenna and cause
microwave leakage.
8-6. Confirm after repair:
(A) After repair or replacement of parts, make sure that screws of
the oven are neither loose nor missing; to prevent the
microwave leakage.
(B) Make sure that all electrical connections are tight before
inserting the plug in to the wall outlet.
(C) Check for radiation leakage. (Refer to the procedure for
measuring energy leakage in page 9.)
_ PRECAUTION
There exists HIGH VOLTAGE ELECTRICITY. with high. current
capabilities
in. the -circuits.of
the HIGH. VOLTAGE
TRANSFORMER secondary and filament terminals. it is
extremely dangerous to work on or near these circuits with the
oven energized.
DO.NOT. measurethe sioletie | in the hgh voltage circuit
< including filament oe of. 'magnetron. .
PRECAUTION
~ Never touch any circuit wiring with your hand nor with an
insulated tool during operation. -
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