Sharp R-480J Service Manual page 10

R-480J
TEST PROCEDURE
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
PROBLEM
CONDITION
Home fuse blows when power
supply cord is plugged into wall
outlet.
FUSE F10A blows when power
supply cord is plugged into wall
outlet.
Display does not
OFF anything when power supply
CONDITION
cord is plugged into wall outlet.
Display does not operate
properly when STOP/CLEAR
pad is touched.
Oven lamp does not light at
door opened.
appears.)
Oven does not start when the
START pad is
(Display appears)
Oven lamp does not light
(Display appears.)
Fan motor does not operate.
(Display appears.)
Turntable motor
does not operate. (Display
appears.)
Oven or any electrical parts
does not stop when cooking
time is 0 or STOP/CLEAR pad
is touched.
Oven seems to be operating
ON
but little or no heat is produced
CONDITION
in oven load. (Microwave
power level is set at HIGH)
Oven does not seems to be
operating properly
MEDIUM HIGH,
MEDIUM LOW or LOW is set.
(Oven operates properly at HIGH
and when the STOP/CLEAR pad
is touched the oven stops.)
Oven goes into cook cycle but
shuts down before end of
cooking cycle.
Oven stops as soon as when
the START pad is touched.
AH sensor does not end during
Sensor Cooking
(Oven does not shut off after a
SENSOR
cup of water is boiling by sensor
COOKING
cooking.)
CONDITION
Oven stops at 16 sec. after
starting.
A B C D E E
show
(Display
touched.
assembly
when
MEDIUM,
condition.
E F G G H H I J K L M N
8
CK = Check / RE = Replace
RE RE CK CK CK CK CK CK CK CK O