Sharp R-1482, R-1480 Door Replacement, Control Unit and KEY Unit Removal, Door Assembly Removal

R-1480 R-1481 R-1482

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".

DOOR SENSING SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT

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

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.)

Latch
Hook
Latch
Heads
	Door
	Sensing
	Switch
	Monitor
	Fuse
Door	Monitor
	Switch
	Secondary
	Interlock
	Switch

Figure C-1. Latch Switch Adjustments

DOOR REPLACEMENT

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.

Note: When the individual parts are replaced, refer to "Door Disassembly".

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

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