Sharp R-305EW Service Manual download pdf (Page 24)

R-305EW

To remove the outer case, proceed as follows.

1. Disconnect the power supply cord.

2. Open the oven door and block it open.

3. Remove the two (2) screws from the lower portion of the

rear cabinet using a T20H Torx type or GTXH20-100

screw driver.

4. Remove the remaining two (2) screws from rear and one

(1) screw along the right side of outer case.

5. Slide the entire outer case back out about 1 inch (3 cm)

to free it from retaining clips on the cavity face plate.

6. Lift entire outer case from the unit.

Microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts may

result in severe, possibly fatal, electric shock.

(Example)

High Voltage Capacitor, Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc..

WARNING:

Avoid possible exposure to microwave energy. Please follow the instructions below before

operating the oven.

WARNING AGAINST HIGH VOLTAGE:

OUTER CASE REMOVAL

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

To prevent an electric shock, take the following pre-

cautions.

1. Before wiring,

1) Disconnect the power supply cord.

2) Open the door block it open.

3) Discharge the high voltage capacitor and wait for 60

seconds.

2. Don’t let the wire leads touch to the following parts;

1) High voltage parts:

Magnetron, High voltage transformer, High voltage

capacitor and High voltage rectifier assembly.

2) Hot parts:

Oven lamp, Magnetron, High voltage transformer

WARNING FOR WIRING

1. Disconnect the power supply cord.

2. 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;

1. Door does not close firmly.

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:

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.

and Oven cavity.

3) Sharp edge:

Bottom plate, Oven cavity, Waveguide flange,

Chassis support and other metallic plate.

4) Movable parts (to prevent a fault)

Fan blade, Fan motor, Switch.

3. Do not catch the wire leads in the outer case cabinet.

4. Insert the positive lock connector until its pin is locked

and make sure that the wire leads do not come off even

if the wire leads are pulled.

5. To prevent an error function, connect the wire leads

correctly, referring to the Pictorial Diagram.

Please refer to ‘OVEN PARTS, CABINET PARTS, CONTROL PANEL PARTS, DOOR PARTS’, when carrying out any of

the following removal procedures:

Special screw

Screw Driver

(Type: TORX T20 H or

GTXH20-100

)

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Sharp R-305EW Service Manual Page 24

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