Door Sensing Switch /Secondary Interlock Switch And Monitor Switch Removal - Sharp R-530BK Service Manual

R-530BK
R-530BW
Door Sensing Switch /Secondary Interlock
Switch and Monitor Switch Adjustments
I,
2.
3.
1.
2.
c"
3.
4.
5.
Disconnect the power supply cord and remove outer
case cabinet.
Open the oven door and block it open.
Discharge the 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.
Loosen the two (2) screws holding the latch hook to
the oven cavity front flange.
With the door closed, adjust the 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 heads should be less than
0.5mm.
The vertical position of the latch hook should be
placed where the door sensing switch and the sec-
ondary interlock switch have activated with the door
closed.
Secure the screws with washers firmly.
Make sure of the door sensing switch operation. If
the door sensing switch has not activated with the
door closed, loosen the screw and adjust the latch
hook position.
Check operation of all switches. If each switch has
not activated with the door closed, loosen screw and
adjust the latch hook position.
Note: After adjustments, make sure of the following:
1. In and out play of the door remains less than 0.5mm
when in the latched position.
Check the upper position of the latch hook by push-
ing and pulling the upper portion of the door.
Then check lower portion of the latch hook, by pushing
and pulling the lower portion of the door toward the
oven face. Both results (play of the door) should be
less than 0.5mm.
2. The door sensing and secondary interlock switches
interrupt the circuit before the door can be opened.
Monitor switch contacts close when door is opened.
Re-install outer case and check for microwave leak-
age around the door with an approved microwave
survey meter. (Refer to "Microwave Measurement
Procedure.")
Door Sensing Switch /Secondary Interlock
Switch and Monitor Switch Removal
1.
2.
3.
4.
5.
6.
7.
8.
9.
Disconnect the power supply cord and remove outer
case cabinet.
The door sensing and secondary interlock switches
interrupt the circuit before the door can be opened.
Discharge high voltage capacitor.
Disconnect wire leads from switches, fuse and con-
nectors from control panel.
Remove one (1) screw holding control panel to oven
cavity faceplate.
Slide control panel assembly upward and remove
from cavity faceplate.
Open oven door.
Remove two (2) screws holding the latch hook to
oven flange.
Remove latch hook from oven flange by lifting up on
flexible tab and pushing latch hook back.
1 O.Locate the flexible retaining tabs on the latch hook.
11. Push tab inward and rotate switch counterclockwise
to release switch.
Note: For monitor switch, lift switch over boss while ro-
tating counterclockwise.
12.Switch is now free.
Pivot
Point
30