11
R -540DK
R-540DW
CK = Check / RE = Replace
SHORT IN POWER CORD
SHORT OR OPENED WIRING
MAGNETRON
POWER TRANSFORMER
H.V. RECTIFIER ASSEMBLY
HIGH VOLTAGE CAPACITOR
CAVITY TEMPERATURE FUSE
MAGNETRON TEMPERATURE FUSE
PRIMARY INTERLOCK SYSTEM
SECONDARY INTERLOCK SWITCH
MONITOR SWITCH
MONITOR FUSE
OVEN LAMP OR SOCKET
COOLING FAN MOTOR
TURNTABLE MOTOR
TOUCH CONTROL PANEL
WRONG OPERATION
LOW VOLTAGE
DIRTY OVEN CAVITY
KEY UNIT
RELAY (RY1)
COMPU DEFROST
FOIL PATTERN ON PWB.
AH SENSOR
Home fuse or circuit breaker blows when
power cord is plugged into wall receptacle.
Monitor fuse blows when power cord is
plugged into wall receptacle.
All letters and indicators do not appear in
display when power cord is first plugged
into wall outlet.
Touch screen does not operate properly
when STOP/CLEAR key is touched.
(Buzzer should sound and Home Page
should appear in display.)
Oven lamp does not light when door is
opened.
Oven lamp does not go out when door is
closed.
Oven lamp lights but fan motor and
turntable motor do not operate.
Oven does not go into cook cycle when
START pad is touched
Oven seems to be operating but little or
no heat is produced in oven load. (Food
incompletely cooked or not cooked at all
at end of cook cycle.)
Oven goes into a cook cycle but
extremely uneven heating is produced in
oven load (food).
Oven does not cook properly when
programmed for cooking POWER 50%
mode. (Operates properly on cooking
POWER 100 % mode.)
Oven goes into COMPU DEFROST but
food is not defrosted well.
AH sensor does not end during Sensor
cooking condition. (Oven does not shut
off after a cup of water is boiling by
sensor cooking.)
Oven stops at 16 sec. after starting.
RE RE
A B C D E E F F G H
RE RE CK
I
CK CK CK
J K L M N
TEST PROCEDURE
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
COOKING
CONDITION
CONDITION
PROBLEM
OFF
CONDITION
SENSOR
COOKING
CONDITION
