Power Supply Cord Replacement; Door Sensing Switch/Secondary Interlock Switch And Monitor Switch Removal - Sharp R-305MR Service Manual

R305MR
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 assembly to the oven cavity back plate with
two (2) screws.
CAUTION: Do not hit the fan blade strongly when installed
because the bracket may be disfigured.
Coil
Stator
Gap
Bracket
Rotor

[11] POWER SUPPLY CORD REPLACEMENT

1. 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. Remove the single (1) screw holding the green wire to the oven
cavity back plate.
5. Disconnect the leads of the power supply cord from the noise filter,
referring to the Figure C-3(a).
6. 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).
7. Now, the power supply cord is free.
2. INSTALL
1. Insert the moulding cord stopper of power supply cord into the
square hole of the rear cabinet, referring to the Figure C-3 (b).
2. Install the earth wire lead of power supply cord to the oven cavity
back plate with one (1) screw and tight the screw.
3. Connect the gray wire leads of power supply cord to the noise filter
correctly, referring to the Pictorial Diagram.
4. Re-install outer case and check that the oven is operating properly.
[12] DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH
REMOVAL
1. 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.
Groove joint pliers
Shaft
Axis
Stator
Rotor
Rear View
Make sure that the fan blade rotates smooth after
installation.
Make sure that the axis of the shaft is not slanted.
6. Connect the wire leads to the magnetron and fan motor, referring to
the pictorial diagram.
These are the positions
that should be pinched
with pliers.
Side View
Power Supply Cord
Gray Wires
Connect the wire lead which has the black case to
the terminal "L" of the noise filter.
Figure C-3(a) Power Supply Cord Replacement
Moulding
Cord Stopper
Oven Cavity
Back Plate
Figure C-3(b) Power Supply Cord Replacement
6. Remove latch hook assembly from oven flange.
7. Push outward on the two (2) retaining tabs holding switch in place.
8. Switch is now free. At this time switch lever will be free, do not lose
it.
11 – 5
Shaft
Table
Screw
Oven Cavity
Back Plate
Green Wire
Noise Filter
Fuse
Power Supply
Cord
Square
Hole
Cen
brac