Sharp R-8R51 - Page 36

BRS51{W)
&RSt(B}
4 Push the retaining tab slightly and remove the
switch from the tatch hook.
(Far removing
switche)
5. Remove the two (2) screws and nuts holding the
switches to latch hook. Now, they are free.
the ‘st latch switch and stop
Re-install
1. Re-install the 2nd tatch switch, 3rd latch switch and
monitor switch in place, referring to Figure C-5
2. Re-install the 1st latch switch and stop switch in
place with the twa (2) screws and nuts, referring
to Figure C-5 .
3. Re-install the latch hook to the oven cavity flarige
with the two (2) screws.
to chapter “Pictorial Diagram” correctly.
5. Make sure that each switch operates properly, re-
ferring to chapter "Test Procedure”, and “Switches
. Adjustment”.
1ST LATCH, 2ND LATCH, 3RD LATCH, STOP AND MONITOR SWITCHES ADJUSTMENT
If the 1st latch and stop switches, 2nd latch switch,
3rd latch switch and monitor switch do=not operate
properly due to a mis-adjustment, the following ad-
justment 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 forwod, or up and down. In and out
play of the door allowed by the latch hook shauld
be less than 0.5 mm. The horizontal position of the
latch hook should be placed where the 3rd latch
switch and monitor switch have activated with the
door closed.
The vertical position of the latch hook should be
placed where the 1st latch and stop switches and
2nd latch switch have activated with the door
closed.
4. Secure the screws with washers firmly.
5. Make sure of the 1st latch switch, 2nd latch switch
3rd latch and stop switches 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
pasition.
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 po-
sition, pushing and pulling the door toward the
oven face. The results (plays of the door) should
be less than 0.5mm.
2. The 1st latch switch and 2nd latch and stop switch
interrupt the circuit before the door can be opened.
3. The monitor switch contacts close and the 3rd latch
switch contacts open when the door is opened.
4. Re-install outer case and check for microwave
leakage around the door with an approved micro-
wave survey meter. (Refer to Microwave Measure-
ment Procedure.)
_~ LATCH ROOK
__ 3RD LATCH SWITCH
_ UPPER LATCH LEVER
2ND LATCH SWITCH
MONITOR SWITCH
1ST LATCH SWITCH
” STOP SWITCH
LOWER LATCH LEVER
Figure C-6. Latch Switches Adjustment
DOOR REPLACEMENT AND ADJUSTMENT
DOOR REPLACEMENT
1. CARRY OUT 3D CHECKS
2. Remove five (5) screws holding the upper and
lower oven hinge to the oven cavity. The lower
oven hinge is now free.
3. Remove door assembly with upper oven hinge by
pulling it forward.
4. Separate the door assembly and upper aven hinge.
Door assembly is now free.
5. Re-install upper. oven hinge to the new door as-
sembly.
6. On re-installing new door assembly, secure the up-
per and lower oven hinges with the five (5)
mounting screws to the oven cavity. Make sure the
door is parallel with bottom line of the oven face
plate and the lJatch head pass through the latch
holes correctly.
7. CARRY OUT 4R CHECKS
Note: After any service to the door, and approved
microwave survey meter should be used to
assure in 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.
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 tine
of cavity face plate is to be less than 1.0mm.
3. The door is positioned with its face depressed to-
ward the cavity face plate.
34
—Re-connectthe-wireleads_te-eaeh switeh-referrtmg-———_-