R-959SLMA (serv.man11). Component Replacement And Adjustment Procedure - Sharp Home Appliance Service Manual (repair manual). Page 6

R959(SL)MA

11 – 6

If the monitored latch switch, stop 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 the 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 monitor switch has activated with the door closed. The vertical
position of the latch hook should be placed where the monitored
latch switch and stop switch have activated with the door closed.

4. Secure the screws with washers firmly.

5. Make sure of the all switches operation. If the latch head has not

pushed the plungers of the monitor switch with door closed, adjust
the latch hook position. At that time, the latch head should have
pushed the plungers of the monitored latch switch and stop switch.
If the latch head has not pushed the plungers of the monitored latch
switch and stop switch with door closed, loose two (2) screws hold-
ing latch hook to oven cavity front flange and adjust the latch hook
position.

1. 1. In and out play of door remains less than 0.5 mm when latched

position. First check the latch hook position, pushing and pulling
upper portion of the door toward the oven face. Then check the
lower latch hook position, pushing and pulling lower portion of the
door toward the oven face. Both results (play of the door) should be
less than 0.5mm.

2. The contacts (COM-NO) of the stop switch and the monitored latch

switch open within 1.8mm gap between right side of cavity face
plate and door when door is opened.

3. When the door is closed, the contacts (COM-NO) of the stop switch

close. 

4. When the door is closed the contacts (COM-NC) of the monitor

switch and monitored latch switch open. And the contacts (COM-
NO) of their switches close.

5. Re-install outer case and check for microwave leakage around the

door with an approved microwave survey meter. (Refer to Micro-
wave Measurement Procedure.)

Figure C-7 Latch Switches Adjustment

1. Disconnect the oven from the power supply.

2. Push the door slightly.

3. Remove the door stopper from the choke cover.

4. Lift the door upwards.

5. Now, door assembly is free from oven cavity.

6. Insert an putty knife (thickness of about 0.5mm) into the gap

between the choke cover and door frame as shown in Figure C-7 to
free engaging parts.

7. Release choke cover from door panel.

8. Now choke cover is free. 

Figure C-8. Door Disassembly

9. Remove the eight (8) screws holding the door panel to the door

frame.

10.Now, door panel is free.

CAUTION: DO NOT DEFORM OR WARP THE TEETH OF COMB OF

THE DOOR PANEL TO PREVENT MICROWAVE RADIA-
TION EMISSION FROM THE DOOR.

11.Slide latch head upward and remove it from door frame with releas-

ing latch spring from door frame and latch head.

12.Now, latch head and latch spring are free.

13.Remove the two (2) screws holding the door handle and the two (2)

handle bases to the door frame.

14.Remove the door handle and the two (2) handle bases from the

door frame.

15.Remove the one (1) screw holding the handle cover to the door

frame.

16.Remove the handle cover from the door frame.

17.Slide the front door glass rightwards and remove from the door

frame.

18.Now, the front door glass is free

Latch hook

Door

Stop switch

Latch
Heads

Monitor switch

Monitored
latch switch

Tab

Putty knife

Choke cover

Door frame

Door stopper