SHARP R-210B
Service Manual

R-210B

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
WARNING: Avoid possible exposure to microwave energy. Please follow the instructions below before operating the oven.
Door does not close firmly. Door hinge, support or latch hook is damaged. The door gasket or seal or damaged. The door is bent or warped. There are defective parts in the door interlock system. 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. 1. 2. 3. 4. 5. 6.

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;

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 and High voltage rectifier assembly. 2) Hot parts: Oven lamp, Magnetron, High voltage transformer and Oven cavity. 3) Sharp edge: Bottom plate, Oven cavity, Waveguide flange, Chassis support and other metallic plate. 4) Movable parts (to prevent a fault) Fan blade, Fan motor, Switch, Switch lever, Open button. 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.

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 COMPONENT 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. Remove the power supply cord, referring to "POWER SUPPLY CORD REPLACEMENT". 5. Remove the one (1) screw holding the capacitor holder 6. 7. 8. 9. to the oven cavity back plate. Disconnect the filament lead of power transformer from the magnetron. Disconnect the lead of the power transformer from high voltage capacitor. Remove the two (2) screws holding the transformer to bottom plate. Remove the transformer.

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