R-2S56
19
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
WARNING: Avoid possible exposure to microwave energy. Please follow the instructions below before
operating the oven.
1. Door does not close firmly.
2. Door hinge, support or latch hook is damaged.
3. The door gasket or seal or 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:
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. Disconnect the oven from the power supply.
2. Make sure that a definite” click” can be heard when the
microwave oven 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 leads to rise,
it is then possible to hear a “click’ as the door switches
operate.)
3. Visually check the door and cavity face plate for damage
(dents, cracks, signs of arcing etc.).
Carry out any remedial work that is necessary before
operating the oven.
Do not operate the oven if any of the following conditions
exist;
To remove the outer case proceed as follows.
1. Disconnect oven from power supply.
2. Open the oven door and wedge it open.
3. Remove the screws from rear and along the side edge
of case.
4. Slide the entire case back about 3cm to free it from
retaining clips on the cavity face plate.
5. Lift the entire case from the oven.
HIGH VOLTAGE COMPONENTS REMOVAL
(HIGH VOLTAGE CAPACITOR AND HIGH VOLTAGE RECTIFIER ASSEMBLY)
6. Discharge the H.V. capacitor before carrying out any
further work.
7. Do not operate the oven with the outer case removed.
N.B.; Step 1, 2 and 6 form the basis of the 3D checks.
To remove the components, proceed as follows.
1. CARRY OUT 3D CHECKS.
2. Lift up the HVC cover.
3. Disconnect the H.V. wire of the H.V. rectifier assembly
from the power tramsformer.
4. Disconnect the filament lead of the power transformer
from the H.V. capacitor.
5. Remove one (1) screw holding capacitor holder to
rear cabinet.
6. Remove one (1) screw holding earth side terminal of
high voltage rectifier assembly, and remove capacitor
holder.
7. Disconnect all the leads and terminals of high voltage
rectifier assembly from high voltage capacitor.
8. Disconnect the H.V. wire A from the H.V. rectifier,
assy.
Please refer to ‘OVEN PARTS, CABINET PARTS, DOOR PARTS’, when carrying out any of the following removal
procedures:
POWER TRANSFORMER REMOVAL
1. CARRY OUT 3D CHECKS
2. Disconnect the wire leads (main wire harness and H.V.
wire) from power transformer.
3. Release the lead of the power transformer from the wire
holder.
4. Disconnect the lead from magnetron filament.
5. Disconnect the lead of the power transformer from high
voltage capacitor.
6. Remove the four (4) screws holding the transformer to
bottom plate.
7. Remove the transformer.
CAUTION:
DISCHARGE HIGH VOLTAGE
CAPACITOR BEFORE TOUCHING ANY
OVEN COMPONENT OR WIRING.
CAUTION: WHEN REPLACING HIGH VOLTAGE
RECTIFIER ASSEMBLY, ENSURE THAT THE
CATHODE (EARTH) CONNECTION IS
SECURELY FIXED TO THE CAPACITOR
HOLDER WITH AN EARTHING SCREW.
CAUTION: DO NOT REPLACE ONLY HIGH VOLTAGE
RECTIFIER. WHEN REPLACING IT,
REPLACE HIGH VOLTAGE RECTIFIER
ASSEMBLY.
9. Now H.V. rectifier assy. and H.V. copacitor. Should be
free.
OUTER CASE REMOVAL
