Daewoo KOT-170S0A, Service Manual

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5
DISASSEMBLY AND ASSEMBLY
Caution to be observed when trouble shooting
Unlike many other appliances, the microwave oven is high-voltage, high-current equipment.
It is completely safe during normal operation. However, carelessness is servicing the oven can result in an electronic 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 wear rubber gloves when servicing the high voltage side.
3. Discharge the high voltage capacitor before touching any oven components or wiring.
1) Check the grounding.
Do not operate on a two-wire extension cord.
It is imperative, therefore, make sure it is grounded properly before
beginning repair work.
2) Warning about the electric charge in the higi voltage capacitor.
for about 30 seconds after the operation has stopped an 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 insulated screwdrive to discharge.
4. When the 20A fuse is blown due to the operation for the monitor
switch; replace primary interlock switch, secondary interlock switch
and interlock monitor switch.
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.
CAUTION :
When servicing the appliance, take a care when 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.