COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
WARNING: AVOID POSSIBLE EXPOSURE TO MICROWAVE ENERGY. PLEASE FOLLOW THE INSTRUC-
TIONS BELOW .BRBEFORE OPERATING THE OVEN.
1.
2.
3.
CARRY OUT 3D CHECKS.
Make sure that a definite “click” can be heard when the
door is unlatched. (Hold the door in a closed position
with one hand, then push the door open button with the
other, this causes the latch heads to rise, it is then pos-
sible to hear a “click” as the door switches operate.)
Visually check the door and cavity face plate for dam-
age (dents, cracks. signs of arcing etc.).
2. Door hinge, support or latch hook is damaged.
3. The door gasket or seal is damaged.
4. The door is bent or warped.
5. There are defective parts in the door interlock system.
6. There are defective parts in the microwave generating
and transmission assembly.
7. There is visible damage to the oven.
Do not operate the oven:
Carry out any remedial work that is necessary before oper-
ating the oven.
Do not operate the oven if any of the following conditions
exist
1. Without the RF gasket (Magnetron).
2. If the wave guide or oven cavity are not intact.
3. If the door is not closed.
4. If the outer case (cabinet) is not fitted.
1. Door does not close firmly.
Please refer to ‘OVEN PARTS, CABINET PARTS, DOOR PARTS’, when carrying out any of the following removal proce-
dures:
OUTER CASE REMOVAL
To remove the outer case, proceed as follows.
1.
2.
3.
4.
5.
1.
2.
3.
4.
Disconnect oven from power supply.
Open the oven door and wedge it open.
Remove the screws from rear and along the side edge
of case.
Slide the entire case back about 1 inch(3 cm) to free it
CAUTION: DISCHARGE HIGH VOLTAGE CAPACI-
from retaining clips on the cavity face plate.
TOR BEFORE TOUCHING ANY OVEN
Lift the entire case from the oven.
COMPONENTS OR WIRING.
\
POWER TRANSFORMER REMOVAL
CARRY OUT =CHECKS
Disconnect wire leads from power transformer, magne-
tron and capacitor terminals.
Remove four (4) screws holding transformer to base
plate (right).
Remove transformer.
6. Discharge the H.V. capacitor before carring out any
further work.
7. Do not operate the oven with the outer case removed.
Re-install
1.
1.
2.
3.
1.
2.
3.
4.
Rest transformer on the base cabinet with its primary
MAGNETRON REMOVAL
CARRY OUT aCHECKS
CAUTION: WHEN REPLACING MAGNETRON, BE
Disconnect wire leads from magnetron.
Carefully loosen four(4) screws holding magnetron to
waveguide flange.
HIGH VOLTAGE RECTIFIER AND HIGH VOLTAGE CAPACITOR REMOVAL
CARRY OUT 3lJCHECKS
Remove one(l) screw holding capacitor holder to oven
5. Disconnect wire leads from capacitor and remove ca-
pacitor holder. Capacitor is now free.
cavity rear plate.
CAUTION: WHEN REPLACING HIGH VOLTAGE REC-
Disconnect rectifier terminal from capacitor.
Rectifier and high voltage assembly is now free.
TIFIER AND HIGH VOLTAGE CAPACITOR,
GROUND SIDE TERMINAL OF THE HIGH
Remove one (1) screw holding high voltage rectifier
assembly to capacitor holder.
N.B.; Step 1,2 and 6 from the basis of the 3fJ checks.
terminals toward the oven face plate.
2. Transformer with four screws to base plate (right).
3. Reconnect wire leads (primary and high voltage) to
power transformer and filament leads of transformer to
magnetron and high voltage capacitor. Refer to “PIC-
TORIAL DIAGRAM”.
4. Re-install outer case and check that oven is operating
properly.
SURE THE R.F. GASKET IS IN PLACE, AND
MOUNTING SCREWS ARE TIGHTENED
SECURELY.
VOLTAGE RECTIFIER MUST BE SECURED
FIRMLY WITH A GROUNDING SCREW.
21
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