Sharp R-22AT Service Manual

8
R-22AT
R-23AM
R-24AT
“ . “ does not appear on display when power cord is plugged into wall outlet. Control panel can not accept key in. Fuse F2 F6.3A blows when the door is opened.  Home fuse blows when power cord is plugged into wall outlet.  Fuse F1 F13A blows when power cord is plugged into wall outlet. Oven lamp, fan motor and stirrer motors do not work for 1 minute when the door is opened or after cooking. Fuse F2 F6.3A blows when power cord is plugged into wall outlet.  Oven lamp does not light when door is opened. (Blower and stirrer motors work) Blower motor does not work when door is opened. (Oven lamp lights and stirrer motors work) “EE 1” (Magnetron MG1 failure)  “EE 2” (Magnetron MG2 failure) “EE 3” (Magnetron MG1 and MG2 failure)  “EE 6” (Thermistor (1) failure)  “EE 7” (Exhaust air temperature is high)  “EE 9” (Exceeded max. heating time) for R-22AT/ R-24AT Oven lamp, blower motor and stirrer motors do not work.  Oven lamp does not work.  Blower motor does not work.  Oven does not stop after end of cooking cycle. (Oven lamp, blower motor and stirrer motors stop.) Home fuse blows when starting the oven. Oven goes into cook cycle but shuts down before end of cooking cycle.  It passed more than 1 minute after cooking but oven lamp, blower motor and stirrer motors do not stop. “EE 16” (Thermistor of MG. and (2) are open.)  “EE 17” (Magnetron temperature is high.)  “EE 8” (Relay melt short) Stirrer motors do not work.
MAGNETRON MG1
MAGNETRON MG2
HIGH VOLTAGE TRANSFORMER T1
HIGH VOLTAGE TRANSFORMER T2
H.V. RECTIFIER ASSEMBLY FOR MG1
H.V. RECTIFIER ASSEMBLY FOR MG2
H.V. WIRE HARNESS
H.V. CAPACITOR C1
H.V. CAPACITOR C2
1ST. LATCH SWITCH SW1 
2ND. LATCH SWITCH SW2 
3RD. LATCH SWITCH SW3
MONITOR SWITCH SW4 
STOP SWITCH SW5
FUSE M8A F3
FUSE M8A F4
FUSE F13A F1
FUSE F6.3A F2
MAGNETRON TEMPERATURE FUSE TF1
MAGNETRON TEMPERATURE FUSE TF2
B. MOTOR TEMPERATURE FUSE TF3
OVEN TEMPERATURE FUSE TF4
MONITOR RESISTOR R1
MAGNETRON THERMISTOR
OVEN THERMISTOR (1)
OVEN THERMISTOR (2)
STIRRER MOTORS SM
BLOWER MOTOR BM
HIGH VOLTAGE FUSE(S)
OVEN LAMP OR SOCKET
NOISE FILTER
POWER SUPPLY CORD
FUSE HOLDERS
Shorted wire harness
Opened wire harness
TOUCH CONTROL PANEL
RELAY RY-1
RELAY RY-3 [for R-22AT/24AT], RY2 [for R-23AM]
RELAY RY-4 [for R-22AT/24AT], RY3 [for R-23AM]
FOIL PATTERN
Mis adjustment of switches
HOME FUSE or BREAKER
No power at wall outlet
Over the max. cooking time [for R-22AT/24AT]
Due to programme lock
Temperature of magnetron thermistor is high.
Temperature of oven thermistor (1) is high.
Temperature of oven thermistor (2) is high.
KEY UNIT [for R-22AT/24AT], or SWITCH UNIT [for R-23AM]
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A ABBCC DDEEEEEFFGH I I I I JKKKL LN M OQQQR P
TESTPROCEDURE
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
CONDITION
OFF
CONDITION
ON
CONDITION
PROBLEM
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Sharp R-22AT Specifications