Daewoo KOG-261M, Service Manual

Page: 21 / 57

20
– Cautions to be observed when trouble shooting.
Unlike many other appliances, the microwave oven is a high-voltage, high-current equipment. It is
com pletely safety during normal operation. However, carelessness in servicing the oven can result
in an electeric 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 which is attached to iron plate, and wear rubber gloves when servic-
ing the high voltage side.
(3) Warning about the electric charge in the high voltage capacitor. When inspecting and repairing the
high voltage side, always short the capacitor terminals and make sure of discharge.
1. Check the grounding.
Do not operate on a 2-wire extension cord.
The microwave oven is designed to be used
when grounded.
It is imperative, therefore, to makes sure it is
grounded properly vefore before begining
repair work.
2. Warning about the electric charge in
the high voltage capacitor.
For about 30 seconds after the operation
stops, electric charge remains in the high
voltage capacitor. When replacing or check-
ing parts, short between oven chassis and
the negative high terminal of the high voltage
capacitor, by using a properly insulated
screw driber to discharge.
(4) When the 12 Amp. fuse is blown out to operation of the monitor switch; replace primary, and moni-
tor switch.
Refer to 19 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 opertate without cabinet.
CAUTION:
Service personnel should remove their watches whenever working close to or repair-
WARNING:
When servicing the appliance, need a care of touching or replacing high potential
parts because of electrical shock of exposing microwave. These parts are as fol-
lows–H.V. Thansformer, Magnetron, H.V. Capacitor, H.V. Diode.