Sharp R-3A54 User Manual

R -3A54
R-3E54
COMPONENT REPLACEMENT AND ADJUSTMiENT PROCEDURE
Avoid possible exposure to microwave energy. Please follow the
before operating the oven.
1. CARRY OUT 3D CHECKS.
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 heads 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.).
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 sys-
tem.
6. There are defective parts in the microwave generat-
ing and transmission assembly.
7. There is visible damage to the oven.
Carry’ out any remedial work that is necessary before
Do not operate the oven:
operating the oven.
-.
1. Without the RF gasket (Magnetron).
Do not operate the oven if any of the following con-
2. If the wave guide or oven cavity are not intact.
ditions exist;
3. if the door is not closed.
1. Door does not close firmly.
4. if the outer case (cabinet) is not fitted.
Please refer to ‘OVEN PARTS, CABINET PARTS, DOOR PARTS’, when carrying out any of the following removal
procedures:
I
(RDAOOOl E)
OUTER CASE REMOVAL
To remove the outer case, proceed as follows.
6. Discharge the H.V. capacitor before carring out any
1. Disconnect oven from power supply.
further work.
2. Open the oven door and wedge it open.
7. Do not operate the oven with the outer case re-
3. Remove the screws from rear and along the side
moved.
edge of case.
N.B.; Step I,2 and 6 form the basis of the 3D checks.
4. Slide the entire case .back about 1 inch (3cm) to
CAUTION: DISCHARGE
HIGH VOLTAGE
free it from retaining clips on the cavity face plate.
CAPACITOR BEFORE TOUCHING ANY
5. Lift the entire case from the oven.
OVEN COMPONENTS OR WIRING.
HIGH VOLTAGE COMPONENTS REMOVAL
(HIGH VOLTAGE CAPACITOR AND HIGH VOLTAGE RECTIFIER ASSEMBLY)
1. CARRY OUT 30 CHECKS.
2. Disconnect the H.V. wire A with the filament lead
of the power transformer from the high voltage
capacitor.
3. Disconnect the H.V. wire of the H.V. rectifier as-
sembly from the power transformer.
4. Remove the single(l) screw holding the capacitor
holder to the back plate of the oven cavity.
5. Remove the single(l) screw holding the earth side
terminal of the high voltage rectifier assembly to the
capacitor holder.
6. Disconnect the H.V. rectifier assembly from the high
voltage capacitor.
7. Now, high voltage capacitor and H.V. rectifier are
free.
CAUT!ON: WHEN REPLACING HIGH VOLTAGE
RECTIFIER ASSEMBLY, ENSURE THAT
THE CATHODE (EARTH) CONNECTION
IS
SECURELY FIXED TO
THE
CAPACITOR
HOLDER
WITH AN
EARTHING SCREW.
POWER TRANSFORMER REMOVAL
1. CARRY OUT 30 CHECKS
2. Disconnect the main harness from the power trans-
former
3. Disconnect the H.V. wire of the H.V. rectifier as-
sembly from the power transformer.
4. Disconnect the filament lead of the power transfor-
mer from the H.V. wire A.
5. Disconnect the filament lead of the power transfor-
mer from the magnetron.
6. Remove the four(4) screws holding the power
transformer to the bottom plate.
7. Remove the trans cushion from the power transfor-
mer.
8. Remove the power transformer from the bottom
plate. Now, it is free.
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Sharp R-3A54 Specifications

General

Brand	Sharp
Model	R-3A54
Category	Microwave Oven
Language	English