Sharp R-290H, Service Manual

Page: 23 / 36

R-290H(S)
21
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
Power Supply
Cord
Oven Cavity
Back Plate
Square
Hole
Moulding
Cord Stopper
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
three (3) 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.
• 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.
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.
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
noise filter, referring to the Figure C-4 (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-4 (b).
5. Now, the power supply cord is free.
POWER SUPPLY CORD REPLACEMENT
Re-install
1. Insert the moulding cord stopper of power supply cord
into the square hole of the rear cabinet, referring to the
Figure C-4 (b).
2. Install the earth wire lead of power supply cord and the
earth angle to the oven cavity with one (1) screw and
tight the screw.
3. Connect the brown and blue wire leads of power supply
cord to the noise filter correctly, referring to the Pictorial
Diagram.
Power Supply Cord
Oven Cavity
Back Plate
Screw
Green/Yelow
Wire
Brown Wire
Fuse
Blue Wire
Noise Filter
Figure C-4 (a). Power Supply Cord Replacement
Figure C-4 (b) Power Supply Cord Replacement