R-351NW
Figure C-5. Door Disassembly
Choke Cover
Door Frame
Putty Knife
11 - 6
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
fl
ange.
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
fi
rmly.
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.
2. 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.
[13] DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH
ADJUSTMENT
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-4. Latch Switch Adjustments
Latch
Heads
Door
Switch Lever
Latch Hook
Door Sensing
Switch
Monitor Switch
Secondary
Interlock Switch
1. REMOVAL
1. Disconnect the power supply cord.
2. 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-5 to free engaging parts.
4. Pry the choke cover by inserting a putty knife as shown
Figure C-5.
5. Release choke cover from door panel.
6. Now choke cover is free.
NOTE:
When carrying out any repair to the door, do not
bend or warp the slit choke (tabs on the door panel
assembly) to prevent microwave leakage.
7. Release two (2) pins of door panel from two (2) holes of
upper and lower oven hinges by lifting up.
8. Now, door panel is free from oven cavity.
9. Remove the one (1) screw holding the door panel to the
door frame.
[14] DOOR REPLACEMENT
10. Release door panel from ten (10) tabs of door frame.
11. Now, door panel with sealer
fi
lm is free.
12. Tear sealer
fi
lm from door panel.
13. Now, door panel is free.
14. Slide latch head upward and remove it from door frame with
releasing latch spring from door frame and latch head.
15. Now, latch head and latch spring are free.
16. Remove door screen from door frame.
17. Now, door screen is free.
2. REINSTALL
1. Re-install door screen to door frame.
2. Reinstall the latch spring to the latch head. Reinstall the latch
spring to the door frame. Reinstall latch head to door frame.
3. Reinstall door panel to door frame by
fi
tting ten (10) tabs of
door frame to ten (10) holes of door panel.
4. Hold the door panel to the door frame with the one (1) screw.
5. Put sealer
fi
lm on door panel. Refer to “Sealer Film” about
how to handle new one.
6. Catch two (2) pins of door panel on two (2) hole of upper
and lower oven hinges
7. Re-install choke cover to door panel by pushing.
NOTE:
After any service to the door;
1)
Make sure that door sensing switch and secondary
interlock switch are operating properly. (Refer to
chapter “Test Procedures”.)
2)
An approved microwave survey meter should be used
to assure compliance with proper microwave radiation
emission limitation standards.
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