Power Supply Cord Replacement; Door Sensing Switch/Secondary Interlock Switch And Monitor Switch Removal; Door Sensing Switch/Secondary Interlock Switch And Monitor Switch Adjustment - Sharp R-306LK Service Manual

[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.
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.
[13] DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH
ADJUSTMENT
1. Adjustment
1. Disconnect the power supply cord, and then remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
If the door sensing switch, secondary interlock switch and monitor
switch do not operate properly due to a misadjustment, the following
adjustment should be made.
4. Loosen the two (2) screws holding latch hook to the oven cavity
front flange.
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
2. REINSTALL
1. Reinstall each switch in its place. The secondary interlock/monitor
switches are in the lower position and the door sensing switch is in
the upper position.
2. Reconnect wire leads to each switch. Refer to pictorial diagram.
3. Secure latch hook (with two (2) mounting screws) to oven flange.
4. Make sure that the monitor switch is operating properly and check
continuity of the monitor circuit. Refer to chapter "Test Procedure"
and Adjustment procedure.
5. With door closed, adjust latch hook by moving it back and forth,
and up and down. In and out play of the door allowed by the upper
and lower position of the latch hook should be less than 0.5mm.
The vertical position of the latch hook should be adjusted so that
the door sensing switch and secondary interlock switch are acti-
vated with the door closed. The horizontal position of the latch hook
should be adjusted so that the plunger of the monitor switch is
pressed with the door closed.
6. Secure the screws with washers firmly.
7. Check the operation of all switches. If each switch has not activated
with the door closed, loosen screw and adjust the latch hook posi-
tion.
11 – 5
Screw
Oven Cavity
Back Plate
Green Wire
Noise Filter
Fuse
Power Supply
Cord
Square
Hole
R306LW