DAEWOO ELECTRONICS KOG-371G0S, Service Manual

Page: 26 / 115

25
DISASSEMBLY AND ASSEMBLY
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
beginning 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
screwdriver to discharge.
4. When the 15A fuse is blown out due to the operation of the monitor
switch; replace primary interlock switch, secondary interlock switch
and interlock 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 replacing 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-HV Transformer,
Magnetron, HV Capacitor, HV Diode. HV Fuse.