Turntable Motor Removal; Cooling Fan Motor Removal - Sharp R-305MR Service Manual

Panel
decoration
Figure C-2a Graphic Sheet and Membrane Switch Replacement

[9] 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.

[10] 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.
Large depression
Display
window
Small depression
Membrame switch
Graphic sheet
Rubber connector
LED sheet
LCD holder
Liquid
crystal display
Panel sub assembly
Control panel
frame
Figure C-2b Ribbon Cable of Membrane Switch
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 to fit the turntable motor
cover.
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 re-use the removed fan blade because the hole
(for shaft) may be larger than normal.
10.Now, the fan motor is free.
2. INSTALLATION
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.
11 – 4
Screws
Control unit
Control panel frame
Slit
Ribbon cable of membrane switch
R305MR