Component Replacement And Adjustment Procedure; Pictorial Diagram - Sharp R-1880LS Service Manual

R-1880LS/LST

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

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 operat-
ing the oven.
1. Disconnect the power supply cord.
. 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 ex-
ist;
1. Door does not close firmly.
. 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.
To prevent an electric shock, take the following pre-
cautions.
1. Before wiring,
1) D isconnect the power supply cord.
) O pen the door block it open.
3) D ischarge the high voltage capacitor and wait for 60
seconds.
. Don't let the wire leads touch to the followiong parts;
1) H igh voltage parts:
Magnetron, High voltage transformer, High voltage
capacitor and High voltage rectifier assembly.
) H ot parts:
Oven lamp, Magnetron, High voltage transformer and
Oven cavity.
3) S harp edge:
Please refer to 'OVEN PARTS, CABINET PARTS, CONTROL PANAL PARTS, DOOR PARTS', when carrying out any of the fol-
lowing removal procedures:
THE FOLLOWING ADJUSTMENTS OR COMPONENT REPLACEMENT CAN BE PERFORMED
1. Hood lamps, sockets and grease filter.
. Oven lamp, base cover and hood lamp glass assembly.
3. Turntable motor.
4. Hood exhaust louver.
1. Disconnect the power supply cord.
. Open the door and block it open.
3. While holding the hood exhaust louver to the oven cavity,
remove the two hood louver screws on each side.
4. The hood exhaust louver is now free and can be removed.
WARNING AGAINST HIGH VOLTAGE:
WARNING FOR WIRING
WITHOUT REMOVING THE OVEN FROM THE WALL
HOOD EXHAUST LOUVER REMOVAL
Do not operate the oven:
1. Without the RF gasket (Magnetron).
. 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.
Bottom plate, Oven cavity, Waveguide flange, Chassis
support and other metallic plate.
4) Movable parts (to prevent a fault)
Fan blade, Fan motor, Switch, Switch lever, Open
button.
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.
5. Control panel assembly or components
6. Stirrer cover and stirrer fan.
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