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R-4A56
UPPER LATCH SWITCH, LOWER LATCH SWITCH, STOP SWITCH AND MONITOR SWITCH ADJUSTMENT
If the lower latch switch, stop switch, upper latch switch and
monitor switch do not operate properly due to a mis-
adjustment, the following adjustment should be made.
1. CARRY OUT 3D CHECKS.
2. Loosen the two (2) screws holding the latch hook to the
oven cavity front flange.
3. With door closed, adjust the latch hook by moving it back
and forward, or up and down. In and out play of the door
allowed by the latch hook should be less than 0.5 mm.
The horizontal position of the latch hook should be
placed where the stop switch and monitor switch have
activated with the door closed.
The vertical position of the latch hook should be placed
where the lower latch switch and upper latch switch have
activated with the door closed.
4. Secure the screws with washers firmly.
5. Make sure of the upper latch switch, stop switch, lower
latch switch and monitor switch operation. If those
switches have not activated with the door closed, two (2)
screws holding latch hook to oven cavity front flange and
adjust the latch hook position.
After adjustment, make sure of following:
1. In and out play of door remains less than 0.5 mm when
latched position. First check latch hook position, pushing
and pulling the door toward the oven face. The results
(plays of the door) should be less than 0.5mm.
2. The upper latch switch and lower latch switch interrupt
the circuit before the door can be opened.
3. The monitor switch contacts close when the door is
opened.
4. The stop switch contacts open when the door is opened.
5. Reinstall outer case and check for microwave leakage
around the door with an approved microwave survey
meter. (Refer to Microwave Measurement Procedure.)
MONITOR
SWITCH
UPPER
LATCH
SWITCH
STOP
SWITCH
LOWER
LATCH
SWITCH
LATCH
LEVER
PLUNGER
SWICTH
LATCH
HEAD
DOOR
OPEN
BUTTON
LATCH
HEAD
LATCH
HOOK
DOOR
Figure C-7 Latch Switches Adjustment
DOOR REPLACEMENT AND ADJUSTMENT
1. Adjust door latch heads at a position where they smoothly
catch the latch hook through the latch holes. Refer to
latch switch adjustments.
2. Deviation of the door alignment from horizontal line of
cavity face. The plate is to be less than 1.0mm.
3. The door is positioned with its face depressed toward the
cavity face plate.
4. Reinstall outer case and check for microwave leakage
around the door with an approved microwave survey
meter. (Refer to Microwave Measure ment Procedure.)
LATCH
HEADS
LOWER
OVEN
HINGE
DOOR
ASSEMBLY
UPPER
OVEN
HINGE
OUTER
CASE
CABINET
RE-INSTALL
Figure C-8. Door Assembly Replacement and Adjustment
DOOR REPLACEMENT
1. CARRY OUT 3D CHECKS.
2. Remove two (2) screws holding the lower oven hinge to
the oven cavity. The lower oven hinge is now free.
3. Release the door assembly from the upper oven hinge.
4. Remove door assembly.
5. Door assembly is now free.
6. Re-install upper oven hinge to the new door assembly.
7. On re-installing new door assembly, secure the lower
oven hinges with the two (2) mounting screws to the oven
cavity. Make sure the door is parallel with bottom line of
the oven face plate and the latch heads pass through the
latch holes correctly.
8. CARRY OUT 4R CHECKS.
Note:
After any service to the door, an approved microwave
survey meter should be used to assure compliance
with proper microwave radiation standards. (Refer
to Microwave Measurement Procedure.)
DOOR ADJUSTMENT
When removing and/or loosening hinges such as in door
replacement, the following adjustment criteria are taken.
Door is adjusted to meet the following three conditions by
keeping screws of hinge loose.
Summary of Contents for R-4A56
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