COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
WARNING: Avoid possible exposure to microwave energy. Please follow the instructions below before operating the oven.
1.Disconnect 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 push the door open button 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.).
Carry out any remedial work that is necessary before operating the oven.
Do not operate the oven if any of the following conditions exist;
1.Door does not close firmly.
2.Door hinge, support or latch hook is damaged.
3.The door gasket or seal or 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.
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. | ||
manners. |
| 3) Sharp edge: | ||
1. | Before wiring, |
| Bottom plate, Oven cavity, Weveguide flange, | |
| 1) | Disconnect the power supply. |
| Chassis support and other metallic plate. |
| 2) | Open the door and wedge the door open. |
| 4) Movable parts (to prevent a fault) |
| 3) | Discharge the high voltage capacitor and wait for |
| Fan blade, Fan motor, Switch, Switch lever, Open |
|
| 60 seconds. |
| button. |
2. | Don't let the wire leads touch to the following parts; | 3. | Do not catch the wire leads in the outer case cabinet. | |
| 1) | High voltage parts: | 4. | Insert the positive lock connector certainly until its pin |
|
| Magnetron, High voltage transformer, High volt- |
| is locked. And make sure that the wire leads should |
|
| age capacitor and High voltage rectifier assem- |
| not come off even if the wire leads is pulled. |
|
| bly. | 5. | To prevent an error function, connect the wire leads |
| 2) | Hot parts: |
| correctly, referring to the Pictorial Diagram. |
|
| Oven lamp, Magnetron, High voltage transformer |
|
|
OUTER CASE REMOVAL
To remove the outer case proceed as follows.
1.Disconnect oven from power supply.
2.Open the oven door and wedge it open.
3.Remove the screws from rear and along the side edge of case.
4.Slide the entire case back about 3cm to free it from retaining clips on the cavity face plate.
5.Lift the entire case from the oven.
6.Discharge the H.V. capacitor before carrying out any further work.
7.Do not operate the oven with the outer case removed. N.B.; Step 1, 2 and 6 form the basis of the 3D checks.
CAUTION: DISCHARGE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPO- NENT OR WIRING.
POWER TRANSFORMER REMOVAL
1.CARRY OUT 3D CHECKS.
2.Disconnect the wire leads (main wire harness and H.V. fuse) from power transformer.
3.Disconnect the H.V. wire of the H.V. rectifier assembly from magnetron.
4.Disconnect the wire leads from the noise filter.
5.Remove the one (1) screw holding the capacitor holder to the oven cavity back plate.
6.Disconnect the filament lead of power transformer from the magnetron.
7.Disconnect the lead of the power transformer from high voltage capacitor.
8.Remove the two (2) screws holding the transformer to bottom plate.
9.Remove the transformer.
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