Sharp Carousel R-350YS Panduan Servis - Halaman 25

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Sharp Carousel R-350YS Panduan Servis

[9] COOLING FAN MOTOR REMOVAL

1. REMOVAL
1. CARRY OUT 3D CHECKS.
2. Disconnect the wire leads from the fan motor.
3. Remove the three (3) screws holding the fun duct (upper one) to
the oven cavity back plate and the oven cavity top plate.
4. Lift up the fan duct (with the noise filter) and place it on the oven
cavity top plate. This is to avoid that the coil of the fan motor is
injured when the fan motor is removed.
5. Remove the two (2) screws holding the fan motor to the oven cavity
back plate.
6. Now, the fan motor with the fan blade is free.
2. REINSTALL
1. Install the new fan blade to the fan motor shaft according to the fol-
lowing procedure.
CAUTION: Do not reuse the removed fan blade because the hole (for
shaft) may be larger than normal.
2. Hold the center of the bracket which supports the shaft of the fan
motor on the flat table.
Table
3. Apply the screw lock tight into the hole (for shaft) of the fan blade.
4. 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.
5. Install the fan motor to the oven cavity back plate with two (2)
screws.
6. Install the fan duct (with the noise filter) to the oven cavity back
plate and the oven cavity top plate with the three (3) screws.
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 instal-
lation.
•
Make sure that the axis of the shaft is not slanted.

[10] POWER SUPPLY CORD REPLACEMENT

1. REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the single (1) screw holding the green/yellow wire to the
oven cavity back plate.
3. Disconnect the leads of the power supply cord from the 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 Fig-
ure C-3(b).
5. Now, the power supply cord is free.
Shaft
Fan motor
Center of
bracket
7. Connect the wire leads to the fan motor, referring to the pictorial
diagram.
3. INFORMATION (How to remove the fan blade)
1. Remove the fan motor with the fan blade, referring to "REMONAL".
2. Remove the fan blade from the fan motor shaft according to the fol-
lowing procedure.
3. Hold the edge of the rotor of the fan motor by using a pair of groove
joint pliers.
CAUTION: •
Make sure that no metal pieces enter the gap between
the rotor and the stator of the fan motor because the
rotor is easily 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.
4. Remove the fan blade from the shaft of the fan motor by pulling and
rotating the fan blade with your hand.
5. Now, the fan blade will be free.
Coil
Fan motor
Stator
Gap
Bracket
Shaft
Axis
Stator
Rotor
Power Supply
Cord
Green/Yellow
Wire
Brown Wire
Figure C-3(a) Power Supply Cord Replacement
12 – 4
Groove joint pliers
Rotor
Rear View
Fan motor
These are the positions
that should be pinched
with pliers.
Side View
Oven Cavity
Back Plate
Screw
Blue Wire
R-350Y(S)