COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
WARNING: Avoid possible exposure to microwave energy. Please follow the instructions below before operating the oven.
1.Disconnect the oven from power supply.
2.Make sure that a definite “click” can be heard when the microwave oven door is unlatched. (Hold the door in a closed position with one hand, then grip the door handle and the door lever assembly with the other, this causes the latch leads to rise, it is then possible to hear a “click” as the door switches operate.)
3.Visually check the door and cavity face plate for dam- age (dents, cracks, signs of arcing etc.).
1.Door does not close firmly.
2.Door hinge, support or latch hook is damaged.
3.The door gasket or seal is damaged.
4.The door is bent or warped.
5.There are defective parts in the door interlock system.
6.There are defective parts in the microwave generating and transmission assembly.
7.There is visible damage to the oven.
Carry out any remedial work that is necessary before operating the oven.
Do not operate the oven if any of the following conditions exist;
Do not operate the oven:
1.Without the RF gasket (Magnetron).
2.If the wave guide or oven cavity are not intact.
3.If the door is not closed.
4.If the outer case (cabinet) is not fitted.
Please refer to ‘OVEN PARTS, CABINET PARTS, CONTROL PANEL PARTS, DOOR PARTS’, when carrying out any of the following removal procedures:
WARNING FOR WIRING
To prevent an electric shock, take the following |
| and Oven cavity. | |
precautions. |
| 3) Sharp edge: | |
1. Before wiring, |
| Bottom plate, Oven cavity, Waveguide flange, | |
1) | Disconnect the power supply cord. |
| Chassis support and other metallic plate. |
2) | Open the door and block it open. |
| 4) Movable parts (to prevent a fault) |
3) | Discharge the two high voltage capacitors and |
| Blower fan blade, Blower fan motor, Switches, |
| wait for 60 seconds. |
| Switch levers, Antenna motors and Sirrer anten- |
2. Don’t let the wire leads touch to the followiong parts; |
| nas. | |
1) | High voltage parts: | 3. | Do not catch the wire leads in the outer case cabinet. |
| Magnetron, High voltage transformer, High volt- | 4. | Insert the positive lock connector until its pin is locked |
| age capacitor, High voltage rectifier assembly and |
| and make sure that the wire leads do not come off |
| High voltage fuse. |
| even if the wire leads are pulled. |
2) | Hot parts: | 5. | To prevent an error function, connect the wire leads |
| Oven lamp, Magnetron, High voltage transformer, |
| correctly, referring to the Pictorial Diagram. |
OUTER CASE, REAR CABINET AND POWER SUPPLY CORD REMOVAL
To remove the components, procedure as follows.
1.Disconnect oven from power supply.
2.Open the oven door and wedge it open.
3.Remove the screws from the rear and along side the edge of the outer case.
4.Slide the case back about 1 inch (3 cm) to free it from the oven cavity.
5.Lift entire case from the unit.
6.DISCHARGE TWO HIGH VOLTAGE CAPACITORS BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING.
7.Now, outer case is free.
N.B.; Step 1,2 and 9 form the basis of the 3D checks.
CAUTION:DISCHARGE TWO HIGH VOLTAGE CA- PACITORS BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING.
To remove rear cabinet and power supply cord:
8.Disconnect the power supply cord from the noise filter.
9.Remove the one (1) screws holding the grounding wire of power supply cord to the oven cavity.
10.Remove the screws holding the rear cabinet to the oven cavity and blower motor.
11.Remove the rear cabinet with the power supply cord from the oven cavity.
12.Loosen the tab of the cord bushing, and remove the power supply cord with the cord bushing from the rear cabinet.
13.Remove the cord bushing from the power supply cord, 14.Now, the power supply cord and rear cabinet are free.
HIGH VOLTAGE TRANSFORMER(S) REMOVAL
1.CARRY OUT 3D CHECKS.
2.Remove the rear cabinet, too.
3.Disconnect wire lead(s) of high voltage transformer(s)
from magnetron(s).
4.Remove the wire lead(s) of high voltage transformer(s) from the wire holder.
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