Sharp R-408LS Service Manual download pdf (Page 26)

R408LS

11 – 3

5. Reinstall outer case and check that the oven is operating properly. CAUTION: WHEN REPLACING MAGNETRON, BE SURE THE R.F.

GASKET IS IN PLACE AND MOUNTING SCREWS ARE

TIGHTENED SECURELY.

[6] OVEN LAMP REMOVAL

1. Disconnect the power supply cord and then remove outer case.

2. Open the oven door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the wire leads from the oven lamp.

5. Remove the one (1) screw holding the oven lamp to the magnetron

duct.

6. Remove the oven lamp from the magnetron duct.

7. Now, the oven lamp is free.

Figure C-1. Oven lamp

[7] POSITIVE LOCK CONNECTOR (NO-CASE TYPE) REMOVAL

1. Disconnect the power supply cord, and remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Push the lever of positive lock® connector.

5. Pull down on the positive lock® connector.

CAUTION: WHEN CONNECTING THE POSITIVE LOCK® CONNEC-

TORS TO THE TERMINALS, CONNECT THE POSITIVE

LOCK® SO THAT THE LEVER FACES YOU.

Figure C-2. Positive lock® connector

[8] TURNTABLE MOTOR REMOVAL

1. Disconnect the power supply cord.

2. Remove turntable and turntable support from oven cavity.

3. Lay the oven on it's backside. Remove the turntable motor cover by

snipping off the material in four corners.

4. Where the corners have been snipped off bend corner areas flat.

No sharp edges must be evident after removal of the turntable

motor cover.

5. Disconnect wire leads from turntable motor.

(See “Positive lock® connector removal”)

6. Remove one (1) screw holding turntable motor to oven cavity.

7. Now, the turntable motor is free.

8. After replacement use the one (1) screw XOTS740P10000 to fit the

turntable motor cover.

[9] COOLING FAN MOTOR REMOVAL

1. REMOVAL

1. Disconnect the power supply cord and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the wire leads from the fan motor.

5. Remove the two (2) screws holding the fan motor to the oven cavity

back plate.

6. Remove the fan blade from the fan motor shaft according to the fol-

lowing procedure.

7. Hold the edge of the rotor of the fan motor by using a pair of groove

joint pliers.

CAUTION: Make sure that no metal pieces 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 pli-

ers.

8. Remove the fan blade assembly from the shaft of the fan motor by

pulling and rotating the fan blade with your hand.

9. Now, the fan blade will be free.

CAUTION: Do not reuse the removed fan blade because the hole

(for shaft) may be larger than normal.

2. REINSTALLATION

1. Install the fan blade to the fan motor shaft according to the following

procedure.

2. Hold the center of the bracket which supports the shaft of the fan

motor on the flat table.

3. Apply the screw lock tight into the hole (for shaft) of the fan blade.

4. 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.

Oven lamp

Terminal

Push

Pull down

Lever

Positive lock¨

connector

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Sharp R-408LS Service Manual Page 26

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