Sharp R-950A - AUTOMATIC OPERATIONS; Auto Reheat

R-950A
11
CK = Check / RE = Replace
RE SHORTED POWER CORD
CK LOW POWER SUPPLY VOLTAGE
CK WALL OUTLET
CK OPENED OR SHORTED WIRE HARNESS
RE OVEN LAMP OR SOCKET
 Q FOIL PATERN ON P.W.B.
 P RELAY (RY-7)
 P RELAY (RY-6)
 P RELAY (RY-5)
 P RELAY (RY-4)
 P RELAY (RY-3)
 P RELAY (RY-2)
 P RELAY (RY-1)
 O KEY UNIT
 N TOUCH CONTROL PANEL
 M NOISE FILTER
 L MONITOR RESISTOR
 K DAMPER MOTOR
 K CONVECTION MOTOR
 K TURNTABLE MOTOR
 K FAN MOTOR
 J THERMISTOR 
 I GRILL HEATER
 I CONVECTION HEATER
 H THERMAL CUT-OUT 
 H TEMPERATURE FUSE 150˚C 
 G MAIN FUSE 20A
 F MONITOR FUSE M10A
 E DAMPER SWITCH
 E MONITOR SWITCH
E 2ND. INTERLOCK RELAY CONTROL SWITCH
 E 1ST. LATCH SWITCH
 D HIGH VOLTAGE CAPACITOR
 C H.V. RECTIFIER ASSEMBLY
 B POWER TRANSFORMER
 A MAGNETRON
POSSIBLE CASE AND  DEFECTIVE PARTS
PROBLEM
CONDITION
OFF

CONDITION
COOKING

CONDITION

COMMON 
MODE
MICROWAVE

COOKING
CONDITION

CONVECTION

COOKING
CONDITION

GRILL
COOKING
CONDITION

Home fuse blows when power supply cord is plugged into wall outlet. Fuse M10A blows when power cord is plugged into wall outlet. Display does not show anything when power cord is first plugged into wall outlet. Display does not operate properly when STOP/CLEAR pad is touched. (" : " or the time of day should appear on the display with beep sound during normal condition.) Oven lamp does not light with door opened. Oven lamp does not light at all. Oven lamp light, but turntable motor does not operate. Cooling fan motor does not operate. The oven stops after 1 minute. 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. CONV indicator lights, but convection heater does not heat. Temperature in the oven cavity is lower or higher than preset. Convection cycle runs 3 minutes then the oven shuts down. Grill heater does not heat. Initial back up by convection does not work properly. SIMUL CONVECTION COOKING CONDITION  SIMUL GRILL COOKING CONDITION
See above "Microwave Cooking Condition" and "Convection Cooking Condition". See above "Microwave Cooking Condition" and "Grill Cooking Condition".