Sharp R-230HW Service Manual - Page 26

R-203HW R-220HW R-230HW CONTROL PANEL ASSEMBLY REMOVAL 1. Disconnect the power supply cord and remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Disconnect the leads from the control unit. 5. Remove the one (1) screw holding the control panel to the front plate of the oven cavity. 6. Now, the control panel assembly is free. GRAPHIC SHEET AND MEMBRANE SWITCH REPLACEMENT Removal 1. Disconnect the power supply cord and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Remove the control panel assembly, referring to chapter of CONTROL PANEL ASSEMBLY REMOVAL. 5. Remove the three (3) screws holding the control unit to the control panel frame. And remove the control unit. 6. Remove the rubber connector from the long slit on the control panel frame. 7. Tear away the graphic sheet from the control panel frame. 8. Tear away the membrane switch from the control panel frame. Installation 1. Remove remaining adhesive on the control panel frame surfaces with a soft cloth soaked in alcohol. 2. Tear the backing paper from the new membrane switch. 3. Insert the ribbon cable of the membrane switch into the slit of the control panel frame. 4. Adjust the upper edge and right edge of the membrane switch to the small depression on the surface of the control panel frame. 5. Attach the membrane switch to the control panel frame by rubbing with a soft cloth not to scratch. 6. Tear the backing paper from the new graphic sheet. 7. Adjust the upper edge and right edge of the graphic sheet to the large depression on the surface of the control panel frame. 8. Attach the graphic sheet to the control panel frame by rubbing with a soft cloth not to scratch. 9. Tear the small backing paper from the ribbon cable of the membrane switch. 10. Attach the ribbon cable to the control panel frame rear side. 11. Place the edge of the membrane switch's ribbon cable on the lower portion of the liquid crystal display. 12. Insert the rubber connector into the long slit on the control panel frame. 13. Reinstall the control unit to the control panel frame with the three (3) screws. NOTE: Do not contact the conductor portion of the ribbon cable (edge) and the rubber connector directly with your fingers. This is to avoid oxidized. Control panel frame Large depression Small backing paper Slit Graphic sheet Ribbon cable Membrane switch Liquid crystal display Long slit Small depression Control panel frame (Rear side) Conductor portions Ribbon cable of membrane switch Rubber connector Figure C-2. Graphic Sheet and Membrane Switch Replacement TURNTABLE MOTOR REMOVAL Removal 1. Disconnect the power supply cord. 2. Remove the turntable and turntable support from the oven cavity. 3. Turn the oven over. 4. Remove the one (1) screw holding the turntable motor cover to the bottom plate. 5. Now, the turntable motor cover is free. 6. Disconnect the wire leads from the turntable motor. 7. Remove the single (1) screw holding the turntable motor to the oven cavity. 8. Remove the turntable motor from the oven cavity. 9. Remove the TTM packing from the turntable motor. 10.Now, the turntable motor is free. Re-install 1. Re-install the TTM packing. 2. Re-install the turntable motor with theTTM packing with the single (1) screw. 24