Sharp R-770B Manual de Serviço descarregar pdf (Página 25)

R-770B

1. Disconnect the oven from the power supply.

2. Remove the turntable motor cover by snipping of

material in four corners.

3. Where the corners have been snipped off, bend corner

areas flat. No sharp edge must be evident after re-

moval of turntable motor cover.

4. Disconnect the wire leads from the turntable motor and

remove the two (2) screws holding the turntable motor.

TURNTABLE MOTOR REPLACEMENT

5. Now, the turntable motor is free.

6. After replacement use the one (1) screw provided with

the turntable motor assembly to fit turntable motor

cover.

NOTE: The one (1) screw to fit the turntable motor cover

should be XFPSD40P12K00, XFPSD40P10K00

or XFPSD40P08K000.

OVEN LAMP REMOVAL

1. CARRY OUT 3D CHECKS.

2. Remove the two (2) screws holding the air guide to

the top of the oven cavity.

3. Straighten the tab holding the lamp cover to the top of

the oven cavity.

Coil

Gap

Rotor

Bracket

Stator

Groove joint pliers

Shaft

Axis

Stator

Rotor

These are the position

where should be pinched

with pliers

Shaft

Table

Center of 

bracket

REMOVAL

1. CARRY OUT 3D CHECKS.

2. Remove the one (1) screw holding the noise filter to the

chassis support.

3. Release the noise filter from the tab on the fan duct.

4. Disconnect the wire leads from the fan motor.

5. Remove the one (1) screw holding the capacitor holder

to the oven cavity rear plate.

6. Remove the one (1) screw holding the fan duct to the

oven cavity rear plate.

7. Release the tabs of the capacitor holder from fan duct.

8. Remove the fan duct from the oven.

9. Remove the fan blade from the fan motor shaft accord-

ing to the following procedure.

1) Hold the edge of the rotor of the fan motor by using

a pair of groove joint pliers.

CAUTION:

• Make sure that any pieces do not enter the gap

between the rotor and the stator of the fan

motor. Because the rotor is easy to be shaven

by pliers and metal pieces may be produced.

• Do not let the pliers touch the coil of the fan

motor because the coil may be cut or dam-

aged.

• Do not distort the bracket by touching with the

pliers.

2) Remove the fan blade from the shaft of the fan

motor by pulling and rotating the fan blade with your

hand.

3) Now, the fan blade will be free.

CAUTION:

• Once the fan blade has been removed, it

must be replaced with new one.

10.Remove the two (2) screws holding the fan motor to the

fan duct.

11.Now, the fan motor is free.

INSTALLATION

1. Install the fan motor to the fan duct with the two (2)

screws.

2. Fix the fan blade to the fan motor shaft according to

the following procedure.

1) Hold the centre of the bracket which supports the

shaft of the fan motor on a flat table.

2) Install the fan blade to the shaft of fan motor by

pushing the fan blade with a small, light weight, ball

peen hammer or rubber mallet.

CAUTION:

• Do not hit the fan blade when installing it

because the bracket may be deformed.

• Make sure that the fan blade rotates smoothly

after installation.

• Make sure that the axis of the shaft is not

slanted.

3. Install the fan duct to the oven cavity rear plate with the

one (1) screw.

4. Insert the tabs of the capacitor holder to the fan duct.

5. Install the capacitor holder to the oven cavity rear plate

with the one (1) screw.

6. Install the noise filter to the fan duct and the chassis

support with the one (1) screw.

7. Re-connect the wire leads to the fan motor.

Rear view Side view

4. Remove the lamp cover.

5. Disconnect the wire leads from the oven lamp.

6. Straighten the tab holding the oven lamp.

7. Remove the oven lamp from the top of the oven cavity.

surfaces completely with a soft cloth soaked in

alcohol.

2. When attaching the key unit to the control panel

frame, adjust the upper edge and right edge of

the key unit to the correct position of control

panel frame.

3. Stick the key unit firmly to the control panel

frame by rubbing with soft cloth not to scratch.

FAN MOTOR REPLACEMENT

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Sharp R-770B Manual de Serviço Página 25

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