Sharp R930AK Service Manual - Page 11

IMPORTANT: During sensor cooking operation, the fire sensing operation sequence will not begin until the AH sensor has R-930AK R-930AW detected vapors and initiated a sensor cooking cycle. This is because the operation of the convection fan would interfere with the AH sensor's vapor detection. H.V. RECTIFIER MAGNETRON SCHEMATIC DIAGRAM SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. CLOCK APPEARS ON DISPLAY. CONV. THERMAL CUT-OUT MAGNETRON TEMPERATURE FUSE MONITOR SWITCH FUSE OUTER CASE SWITCH TTM OL FM CM DM TURNTABLE MOTOR OVEN LAMP FAN MOTOR CONVECTION MOTOR DAMPER MOTOR 120V 60Hz OUTER CASE SWITCH SECONDARY INTERLOCK SWITCH A-1 A-3 A-5 COM. (RY1) RY4 RY5 RY6 RY1 A-7 A-9 CONTROL UNIT F-1 F-2 F-3 N.O. (RY1) COM. (RY3) RY2 RY2 COM. PRIMARY (RY2) RY3 INTERLOCK RERAY N.O. (RY2) E-1 E-2 E-3 E-4 E-5 E-6 N.O. (RY3) AH SENSOR DOOR SENSING SWITCH THER- DAMPER MISTOR SWITCH HEATIMG ELEMENT SCHEMATIC 1. DOOR CLOSED. 2. COOKING TIME PROGRAMMED. 3. "START" PAD TOUCHED. Figure O-1. Oven Schematic-OFF Condition CONV. THERMAL CUT-OUT MAGNETRON TEMPERATURE FUSE MONITOR SWITCH FUSE OUTER CASE SWITCH TTM OL FM CM DM TURNTABLE MOTOR OVEN LAMP FAN MOTOR CONVECTION MOTOR DAMPER MOTOR 120V 60Hz OUTER CASE SWITCH SECONDARY INTERLOCK SWITCH A-1 A-3 A-5 COM. (RY1) RY4 RY5 RY6 RY1 A-7 A-9 CONTROL UNIT F-1 F-2 F-3 N.O. (RY1) COM. (RY3) RY2 RY2 COM. PRIMARY (RY2) RY3 INTERLOCK RERAY N.O. (RY2) E-1 E-2 E-3 E-4 E-5 E-6 N.O. (RY3) AH SENSOR DOOR SENSING SWITCH THER- DAMPER MISTOR SWITCH HEATIMG ELEMENT Figure O-2. Oven Schematic-Microwave Cooking Condition 9 POWER TRANSFORMER CAPACITOR 0.94µ POWER TRANSFORMER CAPACITOR 0.94µ H.V. RECTIFIER MAGNETRON