User Manual

R21LCF
11 – 5
2. REINSTALL
1. Re-install each switch in its place. The door sensing switch and
monitor switch are in the lower position and the secondary interlock
switch is in the upper position.
2. Re-connect 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.
[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.
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.
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.
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 Micro-
wave Measurement Procedure.)
Figure C-5. Latch Switch Adjustments
[14] DOOR PARTS REMOVAL
1. REMOVAL
CHOKE COVER
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-6 to
free engaging parts.
4. Pry 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.
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. Remove the one (1) cushion (ferrite) from the lower opening
between the door panel and the door frame.
9. Now, door sub assembly is free from oven cavity.
Figure C-6. Door Disassembly
DOOR PANEL REMOVAL
10.Remove the four (4) screws holding the door panel to the door
frame.
11. Release door panel from seven (7) tabs of door frame by sliding
door panel downward.
12.Now, the door panel is free.
Latch Hook
Latch Switch
Lever A
Latch Switch
Lever B
Latch Switch
Lever C
Latch Head
Latch Head
Handle
Lever
Door
Handle
Latch
Lever
Secondary
Interlock
Switch
Monitor
Switch
Door
Sensing
Switch
Putty Knife
Door Frame
Choke Cover