Sharp R-520LK 用户手册

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3.  Secure  latch  hook  (with  two  ()  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.

1.  Disconnect  the  power  supply  cord,  and  then  remove

outer case.

.  Open the door and block it open.
3.  Discharge high voltage capacitor.
If the door sensing switch, primary interlock switch and moni-
tor switch do not operate properly due to a misadjustment,
the following adjustment should be made.
4.  Loosen the two () 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 primary interlock switch are activated 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 position.

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 upper portion of door toward

the oven face. Both results (play in the door) should be
less than 0.5mm.

.  The door sensing switch and primary 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 Microwave Measurement Procedure.)

REMOVAL
1.  Disconnect the power supply cord.
.  Push the open button and 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-4 to free engaging parts.

4.  Pry the choke cover by inserting a putty knife as shown

Figure C-4.

5.  Release choke cover from door panel.
6.  Now choke cover is free.
7.  Release two () pins of door panel from two () holes of

upper and lower oven hinges by lifting up.

8.  Now,  door  panel  with  door  frame  is  free  from  oven

Door S ensing
S witch

Monitor S witch

S witch Lever

P rimary Interlock
S witch

Latch Heads

Door

Choke Cover

Door Frame

Putty Knife