Sharp R-961 (W) - Page 35

as
MONITORED LATCH SWITCH, DOOR SWITCH AND MONITOR SWITCH REMOVAL
CARRY OUT 3D CHECKS.
Remove the contro! panel assembly referring to
"CONTROL PANEL REMOVAL".
Disconnect the all leads from the switches.
Remove each one (1) screw holding the upper latch hook
and lower latch hook to the oven cavity.
Remove the upper and lower latch hooks from the oven
cavity.
Push the monitored latch switch downwards while pushing
the retaining tab.
. Push the monitor switch or door switch rightwards with
pushing the retaining tab.
CAUTION: WHEN REMOVING THE SWITCH, DO NOT
BREAK THE TABS OF THE LATCH HOOKS.
Monitor switch
Tab
Monitored latch switch
Stop switch
Tab
Figure C-6. Switches
MONITORED LATCH SWITCH, DOOR SWITCH AND MONITOR SWITCH ADJUSTMENT
If the 1st switch, door switch and monitor switch do not
operate properly due to a mis-adjustment, the following
adjustment should be made.
1.
2.
CARRY OUT 3D CHECKS
Loosen the one (1) screw holding the upper latch hook to
the oven cavity front flange and the one (1) screw holding
the lower latch hook to the same flange.
. With the door closed, adjust lower latch hook by moving
it back and forward or up and down and then adjust upper
latch hook by moving it back and forward or up and down.
In and out play of the door allowed by the upper and lower
latch hooks should be less than 0.5 mm. The horizontal
position of the upper latch hook and Sower latch hook
should be placed where the latch heads have pushed the
plungers of the monitor switch and door switch with the
door closed. The vertical position of the upper latch hook
should be placed where the upper latch head has pushed
the plunger of the monitored latch switch with the door
closed.
. Secure the screws firmly.
Make sure of all the switches operate. If the plungers of
the monitored latch switch, door switch and the monitor
switch have not been pushed with door closed, loosen
the one (1) screw holding the upper latch hook and/or
lower latch hook to oven cavity front flange and adjust the
upper latch hook and/or lower latch hook position(s).
After adjustment, make sure of the following:
1.
In and out play of door remains less than 0.5 mm when
door closed and latched. First check upper latch hook
position, pushing and pulling upper portion of door toward
the oven face. Then check the lower latch hook position,
pushing and pulling lower portion of door toward the oven
face. Both results (plays of the door) should be less than
0.5mm.
. The monitored latch switch interrupts the circuit before
the door can be opened.
. The monitor switch contacts of (COM.- NC.) close when
the door is opened and the stop switch contacts open
when the door is opened.
. Re-install outer case and check for microwave leakage
around the door with an approved microwave survey
meter. (Refer to Microwave Measurement Procedure.)
Door
Sf Upper latch head
Monitor switch
Monitored latch switch
Stop switch
Open lever
Figure C-7. Switch Adjustment
DOOR REPLACEMENT AND ADJUSTMENT
REPLACEMENT
1.
2.
3.
4.
CARRY OUT 3D CHECKS.
Remove five (5) screws holding the upper and lower oven
hinge to the oven cavity.
Now, the lower oven hinge is free.
Separate the door assembly and upper oven hinge. Door
assembly is now free.
R-961 -
5. Re-install lower oven hinge to the new docr assembly.
6. On re-installing new door assembly, secure the upper
and lower oven hinges with the five (5) mourting screws
to the oven cavity. Make sure the door is parallel with
bottom line of the oven face plate and the late hhead pass
through the latch holes correctly.
7. CARRY OUT 4R CHECKS.