Sharp R-9H56, Service Manual

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R-9H56
29
TURNTABLE MOTOR AND/OR COUPLING REMOVAL
1. Disconnect the oven from power supply.
2. Remove one (1) screw holding the turntable motor cover
to the base cabinet and take off the turntable motor cover.
3. Disconnect wire lead from the turntable motor.
4. Remove the two (2) screws holding the turntable motor
to the mounting plate of the oven cavity bottom.
5. Pull the turntable coupling out of the oven cavity.
6. Turntable coupling and motor will be free.
CONVECTION MOTOR REMOVAL
1. CARRY OUT 3D CHECKS.
2. Disconnect wire leads from the convection motor.
Remove the convection fan belt and pulley(M).
3. Remove two (2) screws holding the convection motor
mounting angle to the heater duct and base cabinet.
REMOVAL
1. CARRY OUT 3D CHECKS.
2. Disconnect the wire leads from the fan motor and thermal
cut-out.
3. Remove the three (3) screws holding the chassis support
to rear cabinet, control panel back plate and waveguide.
4 Remove one (1) tab holding the fan duct to air guide .
5. Remove the fan motor assembly from the oven cavity.
6. Remove the fan blade assembly 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 easy to be 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 transform the bracket by touching with the
pliers.
2) Remove the fan blade assembly from the shaft of the fan
motor by pulling fan retainer clip 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.
7. Remove the two (2) screws and nuts holding the fan
motor and thermal cut-out mounting angle from the fun
duct.
8. Now, the fan motor is free.
4. Take out the convection motor assembly from the unit.
The convection motor assembly is now free.
5. Remove two (2) screws and nuts holding the motor to
mounting angle.
6. Convection motor is now free.
DAMPER ASSEMBLY REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove cooling fan motor and magnetron refer to
“Cooling Fan Motor Removal” and “Magnetrom Removal”.
3. Disconnect wire leads from damper motor and damper
switch.
4. Remove two(2) ovenside screws holding damper motor
angle to thermal protection plate (right).
5. Damper assembly is free.
6. Remove one (1) screw holding damper motor to damper
motor angle and one (1) screw holding damper switch to
damper motor angle.
7. Damper motor and switch are free.
FAN MOTOR REPLACEMENT
Rear view
Coil
Gap
Rotor
Bracket
Stator
Groove joint pliers
Shaft
Axis
Stator
These are the position
where should be
pinched with pliers
Rotor
Side view
INSTALLATION
1. Install the fan motor and thermal cut-out angle to the fan
duct with the two (2) screws and nuts.
2. Install the fan blade assembly 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 assemby to the shaft of fan motor by
pushing the fan blade with a small, light weight, ball peen
hammer or rubber mallet.