- 9 -
-- If the Primary Interlock Switch is defective, replace not
only the Primary Interlock Switch but also the Interlock
Monitor Switch. Then install a new 15A. Fuse.
-- If the Primary Interlock Switch and the Interlock Monitor
Switch operate properly, determine which of the following
is defective: Blower Motor, Turntable Motor, High Voltage
Transformer, High Voltage Capacitor, High Voltage Diode
or Magnetron.
C. REMOVING BLOWER MOTOR
(Figures 10 (Top View) and 11).
(1) Disconnect all lead wires from the Blower
Motor and H.V. Capacitor.
(2) Remove 3 screws securing the Blower Base
and Blower Motor from Cavity Rear Plate
(Figure 11).
D. REMOVING MAGNETRON
(Figure 10
(
Top View
)
)
(1) Remove Duct (mag. exhaust). By removing
a screw securing the stay.
(2) Disconnect 2 lead wires from the Magnetron.
(3) Remove 3 screws securing the Magnetron to
the Waveguide.
(4) Take out Magnetron VERY CAREFULLY.
NOTE
1.When removing the Magnetron from the Cavity or
Waveguide, use a proper care so that the dome of
the Magnetron does not hit any adjacent parts of
Microwave Oven.
2.Make sure that the contact face of the Magnetron
Gasket is free from any damage or deformation.
3.Adjust the position of the Magnetron properly, so
that it correctly sits in place and the Magnetron
Gasket is in contact with the mounting rim evenly.
4.While holding the Magnetron under this condition,
tighten mounting screws or nuts with your fingers
temporarily.
5.Further tighten the screws or nuts with a box
wrench, giving one or two turns to each of the
screws (or nuts) alternatively so that the
Magnetron is mounted onto the bracket uniformly.
6.After replacing the Magnetron, be sure to check
the microwave energy leakage with a leakage
detector and confirm the energy leakage should
be no greater than 4mW/cm
2
to allow for
measurement uncertainty.
E. REMOVING FUSE
Remove the 15A. Fuse with a screwdriver.
NOTE
-- When replacing the 15A. Fuse, be sure to use an
exact repair part.
-- If the 15A. Fuse blows immediately, check the
Primary Interlock Switch, and the Interlock Monitor
Switch, according to
“
CHECKOUT PROCEDURE
FOR SWITCHES
” on page 6, and make sure to
check the microwave energy leakage according to
“
1. ADJUSTMENT PROCEDURES
” on page 1,
when the Primary Interlock Switch or the Interlock
Monitor Switch is adjusted or replaced.
Figure 11
Blower
Motor
Screws
Blower
Fan
Blower
Base
Duct (mag. exhaust)
Thermostat
Blower
Base
Stay
Figure 10 (Top View)
Fuse
