Troubleshooting Guide - Sharp R-677W Service Manual

TEST PROCEDURE
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
PROBLEM
CONDITION
Fuse F1 15A blows when power
cord is plugged into wall outlet.
Fuse F2 F8A blows when the
door is opened.
Oven lamp does not light when
door is opened.
operates.)
OFF
CONDITION
Home fuse blows when power
cord is plugged into wall outlet.
Nothing appear in display when
power cord is plugged into wall
outlet and open and close the
door.
Display does not
properly when STOP button is
pressed.
Oven does not start when the
START button
(Display operates.)
Oven lamp does not light.
(Turntable motor operates.)
Fan motor does not operate.
(Oven lamp lights.)
COOKING
Turntable motor
CONDITION
(COMMON MODE) operate. (Oven lamp lights.)
Oven or electrical parts does
not stop when cooking time is 0
or STOP button is pressed.
Oven goes into cook cycle but
shuts down before end of
cooking cycle.
Oven seems to be operating but
little or no heat is produced in
oven load.
Oven does not
MICROWAVE
properly during variable cooking
COOKING
condition except 100% cooking
CONDITION
condition.
Oven goes into cook cycle but
shuts down before end of
cooking cycle.
Grill heating element (top)
GRILL doesn't operate.
COOKING
CONDITION
Bottom heating element doesn't
operate.
Oven seems to be operating but
little or no heat is produced in
oven load. (Microwave power
does not seem to be generated
properly.)
DUAL
COOKING
CONDITION Grill heating element (top)
doesn't operate.
Bottom heating element doesn't
operate.

TROUBLESHOOTING GUIDE

A B C D E E E F F G H I J J K K
(Display
operate
is pressed.
does not
operating
R-677 - 13
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CONT
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