Turntable Motor Replacement; Convection Fan Motor Removal - Sharp R-890SLM Service Manual

CAUTION: • Do not hit the fan blade when installing because
the bracket may be deformed.
• Make sure that the fan blade rotates smoothly
after installation.
• Make sure that the axis of the shaft is not slanted.
3. Insert the tabs of the capacitor holder to the fan duct.
4. Install the fan duct to the oven cavity back plate with the one
(1) screw.
5. Install the capacitor holder to the oven cavity back plate with
the one (1) screw.
Coil
Stator
Gap
Bracket
Rotor
Rear View

[7] TURNTABLE MOTOR REPLACEMENT

1. REMOVAL
1. Disconnect the oven from the power supply.
2. Remove the turntable from the oven cavity.
3. Turn the oven over.
4. Cut the four (4) bridges holding the turntable motor cover to
the base plate with cutting pliers as shown in Figure C-1(a).
CAUTION: DO NOT DROP THE TURNTABLE MOTOR COVER
INTO THE OVEN AFTER CUTTING THE BRIDGES.
BECAUSE IT WILL DAMAGE THE WIRE LEADS OF
THE MOTOR AND IT IS DIFFICULT TO REMOVE
IT OUT OF THE OVEN.
5. Remove the turntable motor cover from the base plate.
6. Disconnect the wire leads from the turntable motor.
7. Remove the one (1) screw holding the turntable motor to the
turntable motor angle.
Bridges
Figure C-1(a) Turntable Motor Cover Removal

[8] CONVECTION FAN MOTOR REMOVAL

1. CARRY OUT 3D CHECKS.
2. Remove the two (2) screws holding the back plate to oven
cavity.
3. Disconnect the wire leads from the convection motor.
4. Remove the two (2) screws holding the rear heat cover to
the oven cavity from out-side.
5. Remove the four (4) screws holding the convection fan duct
to the oven cavity.
6. Now, the convection fan duct assembly is free.
7. Remove the one (1) nut holding the convection fan, washers,
pipe and the cooling fan to the convection motor shaft.
Service_R-890SLM.indd 25
Groove joint pliers
Shaft
Axis
Stator
Rotor
Side View
Cutting pliers
Bridges
Turntable motor
cover
6. Reinstall the chassis support to the oven cavity with the one
(1) screw.
7. Refit the one(1) screw to secure the chassis support to the
magnetron.
8. Install the noise filter to the fan duct and the chassis support
with the one (1) screw.
9. Reconnect the wire leads to the fan motor.
These are the positions
that should be pinched
with pliers.
Table
8. Bend the turntable motor retaining tab back to release the motor.
9. Remove the turntable motor from the turntable motor angle.
10. Now, the turntable motor is free.
2. REINSTALLATION
1. Remove the any sharp edges on the turntable motor cover
and the base plate with the cutting pliers.
2. Reinstall turntable motor by locating shaft onto turntable mo-
tor shaft to the turntable motor angle with the one (1) screw.
3. Bend the turntable motor retaining tab forward to secure the motor.
4. Reconnect the wire leads to the turntable motor.
5. Insert the two (2) tabs of the turntable motor cover into the
slits of the base plate as shown in Figure C-1(b).
6. Reinstall the turntable motor cover to the base plate with the
screw (XHTS740P08RV0) as shown in Figure C-1(b).
Turntable motor cover
Tabs
Slits
Base plate
Figure C-1(b) Turntable Motor Cover Reinstallation
8. Remove the three (3) screws holding the rear heat cover to
the convection fan duct.
9. Remove the two (2) screws holding the convection motor to
the rear heat cover.
10. Remove the pipe, washers and the cooling fan from the con-
vection motor shaft.
11. Remove the ring on the convection motor shaft.
12. Now, the convection motor is free.
11 - 3
R-890SLM
Shaft
Center of
bracket
Screw;
XHTS740P08RV0
4/25/09 10:55:38 AM