Sharp R-1505F Service Manual - Page 29

4. Disconnect the 6-pin connector of the hood fan motor from the main wire harness located at the right edge of the oven cavity top plate and release the snap band from the hood duct. R-1500 R-1501 R-1505 R-1506 5. Remove the hood fan motor from the oven cavity top plate by lifting it up. 6. Now, the hood fan motor is free. MAGNETRON REMOVAL 1. Disconnect the power supply cord , remove the oven from wall and remove outer case (Refer to procedure of "Removal of Oven from Wall" and "Outer case Removal".) 2. Open the door and block it open. 3. To discharge the high voltage capacitor, wait for 60 seconds. 4. Remove the three (3) screws holding the hood intake duct R to the oven cavity top plate, the oven cavity front flange and the fan duct. And remove the hood intake duct R. 5. Disconnect the high voltage wire lead of the high voltage rectifier assembly from the magnetron. 6. Disconnect the filament lead of the transformer from the magnetron. 7. Remove the one (1) screw holding the hood duct R to the oven cavity top plate. And remove the hood duct R from the oven cavity top plate R. 8. Remove the magnetron duct from the oven cavity, by releasing the tab of the magnetron duct from the oven cavity top plate. 9. Carefully remove four (4) mounting screws holding the magnetron to waveguide. When removing the screws hold the magnetron to prevent it from falling. 10.Remove the magnetron from the unit with care so the magnetron tube should not be hit by any metal object around the tube. CAUTION: WHEN REPLACING THE MAGNETRON, BE SURE THE R.F. GASKET IS IN PLACE AND MOUNTING SCREWS ARE TIGHTENED SECURELY. HIGH VOLTAGE RECTIFIER AND HIGH VOLTAGE CAPACITOR REMOVAL 1. Disconnect the power supply cord , remove the oven from wall and remove outer case (Refer to procedure of "Removal of Oven from Wall" and "Outer case Removal".) 2. Open the door and block it open. 3. To discharge the high voltage capacitor, wait for 60 seconds. 4. Remove the three (3) screws holding the hood intake duct R to the oven cavity top plate, the oven cavity front flange and the fan duct. And remove the hood intake duct R. 5. Disconnect the high voltage wire lead with high voltage rectifier from the magnetron. 6. Disconnect filament lead of the transformer from high voltage capacitor. 7. Disconnect high voltage wire A from capacitor. 8. Remove the fan duct assembly from the oven cavity, referring to the procedure of "COOLING FAN MOTOR REMOVAL" 9. Remove one (1) screw holding capacitor holder and high voltage rectifier to the fan duct. 10.Disconnect the high voltage rectifier assembly from the high voltage capacitor. 11.Now, the high voltage rectifier assembly is free. 12.Remove capacitor from the holder. 13.Now, the high voltage capacitor is free. CAUTION: WHEN REPLACING THE HIGH VOLTAGE RECTIFIER ASSEMBLY, THE GROUND SIDE TERMINAL MUST BE SECURED FIRMLY WITH A GROUNDING SCREW. HOOD FAN THERMAL CUT-OUT REMOVAL 1. Disconnect the power supply cord and remove the oven from wall and remove outer case. (Refer to procedure of "Removal of Oven from Wall" and "Outer case Removal") 2. Open the door and block it open. 3. To discharge the high voltage capacitor, wait for 60 seconds. 4. Remove the three (3) screws holding the hood intake duct R to the oven cavity top plate, the oven cavity front flange and the fan duct. And remove the hood intake duct R. 5. Disconnect the wire leads from the hood fan thermal cut-out. 6. Remove one (1) screw holding the thermal cut-out to the flange of base plate R (turntable motor side). 7. Remove the hood fan thermal cut-out from the base plate R. 8. Now, the hood fan thermal cut-out is free. THERMAL CUT-OUT (CAVITY) REMOVAL 1. Disconnect the power supply cord and remove the oven from wall and remove outer case. (Refer to procedure of "Removal of Oven from Wall" and "Outer case Removal") 2. Open the door and block it open. 3. To discharge the high voltage capacitor, wait for 60 seconds. 4. Disconnect the wire leads from the thermal cut-out (cavity). 5. Remove the thermal cut-out (cavity) from the holder at the oven cavity bottom plate. 6. Now, the thermal cut-out (cavity) is free. 27