Sharp R-1481 ユーザーズマニュアル

32

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of
"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the control panel assembly, referring to the

procedure of "CONTROL PANEL ASSEMBLY ,
CONTROL UNIT AND KEY UNIT REMOVAL".

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.
5. Loosen the two (2) screws holding latch hook to the oven

cavity front flange.

6. 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 secondary interlock switch are activated with
the door closed. The horizontal position of the latch hook
should be adjusted so that the monitor switch is activated
with the door closed.

7. Secure the screws with washers firmly.
8. Check all of the switches operation. If any 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

DOOR ASSEMBLY REMOVAL
1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of
"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the hood exhaust louver from the oven cavity by

pushing the right and left tabs of the hood exhaust louver.
(Refer to the procedure of "HOOD EXHAUST LOUVER
REMOVAL".)

5. Insert a putty knife (thickness of about 0.5mm) into the

gap  

A

  between the door stopper and the choke cover

as shown in Figure C-3 to free engaging parts.

6. Lift up the door stopper.
7. Now, the door stopper is free from the door assembly.

8. Lift up the door assembly to release the upper and lower

door hinge pins from the upper and lower oven hinges.

9. Now, the door assembly is free.

DOOR ASSEMBLY RE-INSTALL
1. On re-installing door, insert the lower oven hinge to lower

door hinge pin.

2. Insert the upper oven hinge to the upper door hinge pin.
3. Shut the door (close the contacts of interlock switches).
4. Make sure upper and lower oven hinges are inserted into

the upper an lower door hinge pins.

5. Make sure the door is parallel with oven face lines (left

and upper side lines) and door latch heads pass through

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

2. The door sensing switch and secondary interlock switch

interrupt the circuit before the door can be opened.

3. Monitor switch contacts close when door is opened.
4. The contact of door sensing switch and secondary

interlock switch open within 1.2mm gap between right
side of cavity face plate and door when door is open.

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

around door with an approved microwave survey meter.
(Refer to Microwave Measurement Procedure.)

procedure of "CONTROL PANEL ASSEMBLY ,
CONTROL UNIT AND KEY UNIT REMOVAL".

5. Remove the two (2) screws holding the latch hook to the

oven cavity front flange.

6. Remove the latch hook from the oven cavity front flange.
7. Disconnect the wire leads of each switch.
8. Remove each switch from the latch hook by pushing the

one (1) stopper tub holding each switch.

9. Now, each switch is  free.

Re-install
1. Re-install each switch in its place. The secondary interlock

switch is in the lower position, door sensing switch is in
the upper position and the monitor switch is in the middle
position.

2. Re-connect wire leads to each switch. Refer to pictorial

diagram.

3. Secure the latch hook (with two (2) mounting screws) to

oven cavity front 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".

Secondary
Interlock
Switch

Monitor
Switch

Monitor
Fuse

Door
Sensing
Switch

Latch
Hook

Door

Latch
Heads