Read Sharp R-757M (serv.man10) Service Manual online
R-757M - 22
CAUTION:
• Make sure that no swarf from the rotor enters
the gap between the rotor & stator of the fan
motor.
motor.
• Avoid touching the coil of the fan motor with
the pliers as the coil may become cut or dam-
aged.
aged.
• Avoid deforming the bracket whilst using the
pliers.
2) Remove the fan blade assembly from the shaft of
the fan motor by pulling and rotating the fan blade
with your hand.
with your hand.
3) Now, the fan blade is free.
CAUTION:
• Do not reuse the removed fan blade as the
• Do not reuse the removed fan blade as the
fixing hole may be oversize.
12.Remove the two (2) screws holding the fan motor to the
fan duct.
13.Now, the fan motor is free.
INSTALLATION
1. Install the 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.
1)
Hold the centre of the bracket which supports the
shaft of the fan motor on a flat table.
shaft of the fan motor on a flat table.
2)
Apply the screw lock tight into the hole (for shaft) of
the fan blade.
the fan blade.
3)
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.
pushing the fan blade with a small, light weight, ball
peen hammer or rubber mallet.
CAUTION:
• Do not hit the fan blade when installing be-
• Do not hit the fan blade when installing be-
cause the motor 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
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.
6. Re-install the chassis support to the oven cavity and
the magnetron with the two (2) screws.
7. Install the noise filter to the fan duct and the chassis
support with the one (1) screw.
8. Re-connect the wire leads to the fan motor.
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
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-2(a).
Figure C-2(a).
Figure C-2(a). Turntable motor cover removal
Rear view
Side view
CAUTION:
WHERE THE CORNERS HAVE BEEN SNIPPED OFF
BEND CORNER AREAS FLAT. NO SHARP EDGE MUST
BE EVIDENT AFTER REMOVAL OF TT MOTOR COVER.
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.
WHERE THE CORNERS HAVE BEEN SNIPPED OFF
BEND CORNER AREAS FLAT. NO SHARP EDGE MUST
BE EVIDENT AFTER REMOVAL OF TT MOTOR COVER.
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
7. Remove the one (1) screw holding the turntable motor
to the turntable motor angle.
8. Remove the turntable motor from the turntable motor
angle. Now, the turntable motor is free.
Coil
Gap
Rotor
Bracket
Stator
Groove joint pliers
Shaft
Axis
Stator
Rotor
These are the positions
that should be pinched
with pliers.
that should be pinched
with pliers.
Shaft
Table
Center of
bracket
bracket
Cutting pliers
Bridges
Bridges
Turntable motor
cover
cover
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
TURNTABLE MOTOR REPLACEMENT
Click on the first or last page to see other R-757M (serv.man10) service manuals if exist.