Turntable Motor Removal; Cooling Fan Motor Removal - Sharp R-426LS Service Manual

2. REINSTALLATION
1. Remove remaining adhesive on the control panel frame surfaces
with a soft cloth soaked in alcohol.
2. Tear the backing paper from the new membrane switch.
3. Insert the ribbon cable of the membrane switch into the slit of the
control panel frame.
4. Adjust the upper edge and right edge of the membrane switch to
the small depression on the surface of the control panel frame.
5. Attach the membrane switch to the control panel frame by rubbing
with a soft cloth not to scratch.
6. Tear the backing paper from the new graphic sheet.
7. Adjust the upper edge and right edge of the graphic sheet to the
large depression on the surface of the control panel frame.
8. Attach the graphic sheet to the control panel frame by rubbing with
a soft cloth not to scratch.
9. Insert the ribbon cable into the slit of the control unit.
10.Reinstall the control unit to the control panel frame and hold with
the four (4) screws.
11.Insert and connect the edge of the membrane switch's ribbon cable
into the connector CN-G.

[10] 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.

[11] 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.
Control panel frame
Large depression
Small depression
Graphic sheet
Graphic Sheet and Membrane Switch Replacement
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.
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.
5. Install the fan motor assembly to the oven cavity back plate with
two (2) screws.
6. Connect the wire leads to the magnetron and fan motor, referring to
the pictorial diagram.
11 – 4
R426LS
Slit
Ribbon cable
Membrame switch (FPC)