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R-820BK
R-820BW
REMOVAL
1. Disconnect the power supply cord.
2. Push the open button and open the door slightly.
3. Insert a putty knife (thickness of about 0.5mm) into the
gap between the choke cover and door frame as shown
in Figure C-6 to free engaging parts.
4. Pry the principles of the lever and lift up the choke cover
by inserting a putty knife as shown in Figure C-6.
5. Release choke cover from door panel.
6. Now choke cover is free.
DOOR REPLACEMENT
DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH 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.
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 activated 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 position.
After adjustment, check the following.
1. In and out play of door remains less than 0.5mm when in
the latched position. First check upper position of latch
hook, pushing and pulling upper portion of door toward
the oven face. Then check lower portion of the latch
hook, pushing and pulling lower portion of the door
toward the oven face. Both results (play in the door)
should be less than 0.5mm.
2. The door sensing switch and secondary interlock switch
interrupt the circuit before the door can be opened.
3. Monitor switch contacts close when door is opened.
4. Re-install outer case and check for microwave leakage
around door with an approved microwave survey meter.
(Refer to Microwave Measurement Procedure.)
Figure C-5. Latch Switch Adjustments
Figure C-6. Door Disassembly
Putty Knife
Door Frame
Choke Cover
Tab
Tab
Tab
Secondary
Interlock
Switch
Door
Sensing
Switch
Monitor Switch
Latch Hook
Latch Hook
Door
Sensing
Switch
Monitor
Switch
Secondary
Interlock
Switch
Switch
Lever
Latch
Heads
Door
4. Remove the control panel assembly referring to
"CONTROL PANEL ASSEMBLY REMOVAL".
5. Disconnect the leads from all switches.
6. Remove the two (2) screws holding the latch hook to the
oven cavity.
7. Remove the latch hook.
8. Push the retaining tab slightly and remove the switch.
Figure C-4. Switches
Summary of Contents for R-820BK
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