Sharp R-530EK Service Manual page 32

R - 5 3 0 E K
R- 530EW
REMOVAL
1. Disconnect the power supply cord and then remove
outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect the wire leads from the fan motor.
5. Remove the two (2) screws holding the fan motor to the
oven cavity back plate.
6. Remove the fan blade from the fan motor shaft according
to the following procedure.
7. 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 damaged.
* Do not disfigure the bracket by touching with the
pliers.
8. Remove the fan blade from the shaft of the fan motor by
pulling and rotating the fan blade with your hand.
9. Now, the fan blade and the fan motor will be free.
Coil
Groove joint pliers
Stator
Gap
Bracket
Rotor
Rear View
Removal
1. Disconnect the power supply cord, and then remove
outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the two (2) screws holding the AH sensor to the
sensor duct.
5. Disconnect the AH sensor harness from the connector
CN-F on control unit.
6. AH sensor is now free.
DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL
1. Disconnect the power supply cord and remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect wire leads from the switches.
5. Remove two (2) screws holding latch hook to oven flange.
6. Remove latch hook assembly from oven flange.
COOLING FAN MOTOR REMOVAL
CAUTION:
* Do not reuse the removed fan blade because the
INSTALLATION
1. Install the fan blade to the fan motor shaft according to
2. Hold the center of the bracket which supports the shaft
3. Apply the screw lock tight into the hole (for shaft) of the
4. Install the fan blade to the shaft of fan motor by pushing
CAUTION:
* Do not hit the fan blade hard when installing because
* Make sure that the fan blade rotates smoothly after
* Make sure that the axis of the shaft is not slanted.
5. Install the fan motor to the the oven cavity back plate with
6. Connect the wire leads to the fan motor, referring to the
Shaft
These are the positions
Axis
that should be pinched
with pliers
Stator
Rotor
Side View
AH SENSOR REPLACEMENT
Reinstallation
1. Insert the new AH sensor into the sensor duct.
2. Install two (2) screws to secure the AH sensor.
3. Route the AH sensor harness across the oven cavity top
4. Connect the AH sensor harness to CN-F on control unit.
5. Re-install the outer case cabinet and check for proper
7. Push outward on the two (2) retaining tabs holding switch
8. Switch is now free.
Reinstallation
1. Re-install each switch in its place. The secondary
30
hole (for shaft) may be larger than normal.
the following procedure.
of the fan motor on the flat table.
fan blade.
the fan blade with a small, light weight, ball peen hammer
or rubber mallet.
the bracket may be damaged.
installation.
the two (2) screws.
pictorial diagram.
Table
plate and through the large opening.
operation.
in place.
At this time switch lever will be free, do not lose it.
Shaft
Center of
bracket