Sharp R-231NW Service Manual - Page 27

R-231NW [9] POWER SUPPLY CORD REPLACEMENT 1. 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. Remove the single (1) screw holding the green wire to the oven cavity back plate. 5. Disconnect the leads of the power supply cord from the noise filter, referring to the Figure C-3(a). 6. Release the moulding cord stopper of the power supply cord from the square hole of the oven cavity back plate, referring to the Figure C-3(b). 7. Now, the power supply cord is free. Screw Power Supply Cord Oven Cavity Back Plate NL WHT RED Green Wire Gray Wire Gray Wire Noise Filter Connect the wire lead which has the black case to the terminal "L" of the noise filter. Figure C-3(a) Power Supply Cord Replacement [10] TURNTABLE MOTOR REMOVAL 1. REMOVAL 1. Disconnect the power supply cord. 2. Remove turntable and turntable support from oven cavity. 3. Lay the oven on it's backside. Remove the turntable motor cover by snipping off the material in four corners. 4. Where the corners have been snipped off bend corner areas flat. No sharp edges must be evident after removal of the turntable motor cover. 5. Disconnect wire leads from turntable motor. (See "Positive lock connector removal") 6. Remove one (1) screw holding turntable motor to oven cavity. 7. Remove the TTM packing from the turntable motor. 8. Now, the turntable motor is free. 2. REINSTALL 1. Insert the moulding cord stopper of power supply cord into the square hole of the rear cabinet, referring to the Figure C-3 (b). 2. Install the earth wire lead of power supply cord to the oven cavity back plate with one (1) screw and tight the screw. 3. Connect the gray wire leads of power supply cord to the noise filter correctly, referring to the Pictorial Diagram. 4. Re-install outer case and check that the oven is operating properly. Moulding Cord Stopper Power Supply Cord Oven Cavity Back Plate Square Hole Figure C-3(b) Power Supply Cord Replacement 2. REINSTALL 1. Re-install the TTM packing. 2. Re-install the turntable motor with the TTM packing with the single (1) screw to the oven cavity bottom plate. 3. Re-connect the wire leads to the turntable motor. 4. Insert the tab of the turntable motor cover into the hole of the bottom plate. 5. Re-install the turntable motor cover to the bottom plate with one (1) screw. TTM packing Turntable motor [11] COOLING FAN MOTOR REMOVAL 1. 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 wire leads from the fan motor. 5. Remove the two (2) screws holding the fan motor to the oven cavity back plate. 6. Remove the fan blade from the fan motor shaft according to the following procedure. 7. Hold the edge of the rotor of the fan motor by using a pair of groove joint pliers. CAUTION: MAKE SURE THAT ANY PIECES DO NOT ENTER THE GAP BETWEEN THE ROTOR AND THE STATOR OF THE FAN MOTOR. BECAUSE THE ROTOR IS EASY TO BE SHAVEN BY PLIERS AND METAL PIECES MAY BE PRODUCED. Figure C-4. TTM packing Installation DO NOT TOUCH THE PLIERS TO THE COIL OF THE FAN MOTOR BECAUSE THE COIL MAY BE CUT OR INJURED. DO NOT DISFIGURE THE BRACKET BY TOUCHING WITH THE PLIERS. 8. Remove the fan blade assembly from the shaft of the fan motor by pulling and rotating the fan blade with your hand. 9. Now, the fan blade will be free. CAUTION: DO NOT RE-USE THE REMOVED FAN BLADE BECAUSE THE HOLE (FOR SHAFT) MAY BE LARGER THAN NORMAL. 10.Now, the fan motor is free. 11 - 4