14
PRECAUTIONS FOR DISASSEMBLY AND REPAIR
– Cautions to be observed when trouble shooting.
Unlike many other appliances, the microwave oven is a high-voltage, high-current equipment. It is completely
safety during normal operation. However, carelessness in servicing the oven can result in an electric shock or
possible danger from a short circuit.
You are asked to observe the following precautions carefully.
(1) Always remove the power plug from the outlet before servicing.
(2) Use an insulated screwdriver and ware rubber gloves when servicing the high voltage side.
(3) Discharge the high voltage capacitor before touching any oven components or wiring.
1. Check the earthed.
Do not operate on a two wire extension cord. The
microwave oven is designed to be used with earthed.
It is imperative, therefore, to makes sure it is earthed
properly before begining repair work.
2. Warning about the electric charge in the high
voltage capacitor.
For about 30 seconds after the operation stopped, and
electric charge remains in the high voltage capacitor.
When replacing or checking parts, short between oven
chassis and the negative high terminal of the high
voltage capacitor, by using a properly insulted screw
driver to discharge.
(4) When the 15A fuse is blown out due to the operation of the monitor switch; replace primary, secondary
interlock switch and monitor switch.
Refer to next page for the necessary adjustment.
(5) After repair or replacement of parts, make sure that the screws are properly tightened, and all electrical
connections are tightened.
(6) Do not operate without cabinet.
CAUTION : Service personnel should remove their watches whenever working close to or repairing the
magnetron.
WARNING : When servicing the appliance, need a care of touching or replacing high potential parts
because of electrical shock or exposing microwave. These parts are as follows-H.V.
Transformer, Magnetron, H.V. Capacitor, H.V. Diode.
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