Sharp Carousel R-930AK Service Manual - Page 32

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R-930AK

R-930AW

8. Remove the magnetron air guide from the waveguide.

9. Disconnect wire leads from the fan motor.

10. Release the main harness from the hole of the fan duct.

11. Release the thermistor harness from the hole of the fan

duct.

12. Release one (1) tab holding the fan duct to the rear

cabinet.

13. Release one (1) tab holding the fan duct to the air guide

(Right).

14.Remove the fan duct assembly from the oven.

15.Remove the fan blade from the fan motor shaft according

the following procedure.

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

of grove 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 easily shaven by pliers and

metal pieces may be produced.

* Do not touch the pliers to the coil of the fan motor

because the coil may be cut or injured.

* Do not disfigure 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:

* Do not use this removed fan blade again because the

hole (for shaft) of it may become bigger than a

standard one.

16.Remove the two (2) screws and nuts holding the fan

motor to the fan duct.

17.Now, the fan motor is free.

Coil

Rear View

Stator

Gap

Bracket

Rotor

CONTROL PANEL ASSEMBLY AND CONTROL UNIT REMOVAL

To remove the control panel, procedure as follows:

1. Disconnect oven from power supply and remove outer

case.

2. Discharge high voltage capacitor.

3. Disconnect connector CN-A, CN-E and CN-F from the

control unit.

4. Disconnect the wire leads from the relays RY1, RY2 and

RY3.

5. Remove one (1) screw holding the control panel back

plate to the chassis support.

6. Remove two (2) screws holding the bottom edge of the

back plate to the cabinet base.

7. Remove one (1) screw holding the back plate to the oven

cavity flange.

8. Lift up and pull the control panel assembly forward.

Replacement of individual component is as follows;

CONTROL UNIT AND KEY UNIT

1. Disconnect the wire connector from the control unit.

Groove joint pliers

Side View

Shaft

Axis

INSTALLATION

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

screws and nuts.

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

following procedure.

1) Hold the center of the bracket which supports the shaft

of the fan motor on the flat table.

2) Apply the screw lock tight into the hole (for shaft) of the

fan blade.

3) 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 strongly when installed

because the bracket may be disfigured.

* Make sure that the fan blade rotates smooth after

installation.

* Make sure that the axis of the shaft is not slanted.

3. Reset the fan duct assembly to its place.

4. Install the tabs of fan duct to the rear cabinet and air

guide.

5. Install the magnetron air guide with the one (1) screw.

6. Reinstall the main harness and thermistor harness to

each hole of the fan duct.

7. Reinstall the chassis support to the control panel back

plate, waveguide and rear cabinet with the three (3)

screws.

8. Re-connect the wire leads to the fan motor, referring to

the pictorial diagram.

9. Re-install the fan motor grounding wire to the air guide

(Right) with one (1) screw.

These are the position

where should be

pinched with pliers

Stator

Rotor

2. Remove the four (4) screws holding the panel frame to

the back plate.

3. Separate the panel frame and back plate.

4. Remove the three (3) screws holding the control unit to

the panel frame.

5. Lift up the control unit and disconnect the key connector

from the control unit.

6. Now, the control unit and frame assembly are separated.

NOTE; 1. Before attaching a new key unit, remove remaining

adhesive on the control panel frame surfaces

completely with alcohol and so on.

2. When a attaching the key unit to the control

panel frame, adjust the lower edge and right

edge of the key unit to the correct position of the

control panel frame.

3. Stick the key unit firmly to the control panel

frame by rubbing with soft cloth not to scratch.

Shaft

Center of

Table

bracket