Sharp R-231F Service Manual

R-231F
20
Side View
Rear View
Gap
Rotor
Bracket
Stator
Groove joint pliers
Coil
Shaft
Axis
Stator
Rotor
These are the positions
that should be pinched
with pliers.
Shaft
Table
Center of
bracket
11.Remove the two (2) screws holding the fan motor to the
fan duct.
12.Now, the fan motor is free.
INSTALLATION
1. Install the fan motor to the fan duct with the two (2)
screws.
2. Install the fan blade to the fan motor shaft according to
the following procedure.
3. Hold the center of the bracket which supports the shaft
of the fan motor on the flat table.
4. Apply the screw lock tight into the hole (for shaft) of the
fan blade.
5. 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 transformed.
• Make sure that the fan blade rotates smooth after
installed.
• Make sure that the axis of the shaft is not slanted.
6. Install the fan motor assembly to the oven cavity with
two (2) screws.
7. Install the magnetron with three (3) screws.
8. Re-install the wire leads to the hole of the fan duct.
9. Connect the wire leads to the magnetron and the fan
motor, referring to the pictorial diagram.
motor to the oven cavity.
8. Remove the turntable motor from the oven cavity.
9. Remove the TTM packing from the turntable motor.
10.Now, the turntable motor is free.
Re-install
1. Re-install the TTM packing.
2. Re-install the turntable motor with theTTM packing
with the single (1) screw.
3. Re-connect the wire leads to the turntable motor.
4. Insert the tab of the turntable motor cover into the hole
of the bottom plate.
REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the magnetron from the waveguide. Refer to
chapter "MAGNETRON REMOVAL"
3. Disconnect the wire leads from the fan motor.
4. Release the wire leads from the hole of the fan duct.
5. Remove the two (2) screws holding the fan duct to the
oven cavity.
6. Release the fan motor assembly from the oven cavity.
7. Remove the fan blade from the fan motor shaft accord-
ing to the following procedure.
8. Hold the edge of the rotor of the fan motor by using a
pair of groove 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 disfigure the bracket by touching with the
pliers.
9. Remove the fan blade assembly from the shaft of the
fan motor by pulling and rotating the fan blade with your
hand.
10.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.
5. Re-install the turntable motor cover to the bottom plate
with one (1) screw.
Figure C-2. TTM packing Installation
TTM packing
Turntable motor
COOLING FAN MOTOR REMOVAL
Removal
1. CARRY OUT 3D CHECKS.
2. Remove the single (1) screw holding the green/yellow
wire to the oven cavity.
3. Disconnect the leads of the power supply cord from the
POWER SUPPLY CORD REPLACEMENT
noise filter, referring to the Figure C-3 (a).
4. Release the moulding cord stopper of the power supply
cord from the square hole of the oven cavity back plate,
referring to the Figure C-3 (b).
5. Now, the power supply cord is free.

Sharp R-231F Specifications

Power

AC power required	1.21 kW
output power	800 W
microwave frequency	2450 MHz

Weight and Dimensions

outside width	460 mm
outside height	275 mm
outside depth	353 mm
cavity width	322 mm
cavity height	212 mm
cavity depth	336 mm
weight	12 kg