Sharp R-307KW Service Manual - Page 27
] Positive Lock Connector No-case Type Removal, 7] Control Panel Assembly Removal, 8] Graphic Sheet
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11.Now, the magnetron is free. 2. REINSTALLATION 1. Reinstall the magnetron to waveguide flange with the four (4) screws. 2. Reinstall the air duct to the oven cavity top plate and the magnetron with two (2) screws. 3. Insert the end of the chassis support into the hole of the oven cavity front flange. R307KW 4. Hold the other end of the chassis support to the magnetron with the one (1) screw. 5. Reconnect the wire leads to the magnetron. Refer to "PICTORIAL DIAGRAM". 6. Reinstall outer case and check that the oven is operating properly. CAUTION: WHEN REPLACING MAGNETRON, BE SURE THE R.F. GASKET IS IN PLACE AND MOUNTING SCREWS ARE TIGHTENED SECURELY. [6] POSITIVE LOCK CONNECTOR (NO-CASE TYPE) 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. Push the lever of positive lock® connector. 5. Pull down on the positive lock® connector. CAUTION: WHEN CONNECTING THE POSITIVE LOCK® CONNEC- TORS TO THE TERMINALS, CONNECT THE POSITIVE LOCK® SO THAT THE LEVER FACES YOU Positive lock¨ connector Lever Terminal 1 Push 2 Pull down Figure C-1. Positive lock® connector [7] CONTROL PANEL ASSEMBLY 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. Disconnect the wire leads from the control unit. 5. Remove the one (1) screw holding the control panel assembly to the oven flange. 6. Slide the control panel assembly upward and remove it. 7. Now, individual components can be removed. [8] GRAPHIC SHEET AND MEMBRANE SWITCH REPLACEMENT 1. 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 CON- TROL PANEL ASSEMBLY REMOVAL. 5. Remove the two (2) 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. 2. REINSTALL 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 left 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 two (2) screws. NOTE: Do not contact the contact surface of the ribbon cable (edge) and the rubber connector directly with your fingers. This is to avoid oxidation. If display digits are missing or scrambled, remove control unit and clean contact surface with alcohol. After cleaning, do not attach the rubber connector until alcohol dries up. Do not use alcohol or solution to clean the rubber connector. Make sure that there is no trash or foreign substance on contact surface of the rubber connector. 11 - 3