Sharp R930AK Service Manual - Page 15

A B C D E F G H I J K L M N P Q R S S S S S S U V Replace Replace Replace Replace Check Check Check Check POSSIBLE CAUSE AND DEFECTIVE PARTS MAGNETRON POWER TRANSFORMER H.V. RECTIFIER ASSEMBLY HIGH VOLTAGE CAPACITOR SECONDARY INTERLOCK SWITCH PRIMARY INTERLOCK SYSTEM MONITOR SWITCH MONITOR FUSE MAGNETRON TEMPERATURE FUSE CONV. THERMAL CUT-OUT CONVECTION HEATER THERMISTOR DAMPER MOTOR DAMPER SWITCH OUTER CASE SWITCH TOUCH CONTROL PANEL KEY UNIT RELAY RY-1 RELAY RY-2 RELAY RY-3 RELAY RY-4 RELAY RY-5 RELAY RY-6 FOIL PATERN ON PWB. AH SENSOR OVEN LAMP OR SOCKET FAN MOTOR TURNTABLE MOTOR CONVECTION MOTOR LOOSE WIRING SHORTED IN POWER CORD NO POWER AT OUTLET LOW VOLTAGE CONDITION OFF CONDITION COOKING CONDITION 13 TEST PROCEDURE PROBLEM Home fuse blows when power cord is plugged into wall receptacle. Monitor fuse blows when power cord is plugged into wall receptacle 88:88 does not appear in display when power cord is first plugged into wall receptacle. Display does not operate properly when STOP/CLEAR pad is touched. (The time of day should appear on the display with beep sound.) Oven lamp does not light with door opened. Oven lamp does not light in cook cycle. (It light when door is opened). Cooking cycle runs 1 minute then shuts down. Oven lamp light, but turntable motor does not operate. Turntable motor operates normally but cooling fan motor does not operate. Oven does not go into a cook cycle, when START pad is touched. Low or no power is produced during microwave cooking (The food is heated incompletely or not heated at all) Extremely uneven heating is produced in oven load (food). Function of variable cooking does not operate properly except HIGH power. Function of COMPU DEFROST does not operate properly. CONV indicator lights, but oven does not go into cook cycle when START pad is touched. CONV indicator lights, but heating element does not heat. Temperature in the oven cavity is lower or higher than preset. Cooling fan motor runs intermittently or all the time. Convection cycle runs 4 minutes and 15 seconds then shuts down. Oven in the sensor cooking condition but AH sensor does not end or AH sensor turns off about max. 30 min. after start. (MICROWAVE) (CONVECTION) R-930AK R-930AW (SENSOR COOKING)