Sharp R-209FW Service Manual - Page 20

R-209(IN) R-209(W) R-209(Y) 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 damage (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 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 generat- ing 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 manners. 1. Before wiring, 1) Disconnect the power supply. 2) Open the door and wedge the door open. 3) Discharge the high voltage capacitor and wait for 60 seconds. 2. Don't let the wire leads touch to the following parts; 1) High voltage parts: Magnetron, High voltage transformer, High voltage capacitor, High voltage rectifier assembly and High voltage fuse. 2) Hot parts: Oven lamp, Magnetron, High voltage transformer and Oven cavity. 3) Sharp edge: Oven cavity, Waveguide flange, other metallic plate. 4) Movable parts (to prevent a fault) Fan blade, Fan motor, Switch, Turntable motor and Timer motor. 3. Do not catch the wire leads in the outer case cabinet. 4. Insert the positive lock connector certainly until its pin is locked. And make sure that the wire leads should not come off even if the wire leads is pulled. 5. To prevent an error function, connect the wire leads correctly, referring to the Pictorial Diagram. REMEMBER TO CHECK 3D 1) Disconnect the supply. 2) Door opened, and wedged open. 3) Discharge high voltage capacitor. OUTER CASE REMOVAL To To remove the outer case, procedure as follows. 1. Disconnect the power supply cord. 2. Open the oven door and block it open. 3. Remove the two (2) screws along the right side of the outer case. 4. Remove the remaining five (5) screws from the rear of the outer case. 5. Slide the entire outer case back out about 1 inch (3 cm) to free it from retaining clips on the cavity face plate. 6. Lift entire outer case from the unit. 7. Discharge the H. V. capacitor before curring out any further work. 8. Do not operate the oven with the outer case removed. NOTE: Step 1, 2 and 7 form the basis of the 3D checks. CAUTION:1. DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE. 2. DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING. 18