Sharp R-677W User Manual

R-677 - 13
TROUBLESHOOTING GUIDE CONT...
CONDITION PROBLEM
MAGNETRON HIGH VOLTAGE TRANSFORMER H.V. RECTIFIER HIGH VOLTAGE CAPACITOR PRIMARY LATCH SWITCH MONITOR SWITCH STOP SWITCH THERMAL CUT-OUT 145˚C (HVT) THERMAL CUT-OUT 150˚C (OVEN) FUSE 20A (F1) FUSE F8A (F2) NOISE FILTER FAN MOTOR TURNTABLE MOTOR GRILL HEATING ELEMENT (TOP) BOTTOM HEATING ELEMENT POWER SUPPLY CORD OVEN LAMP OR SOCKET SHORTED WIRE HARNESS OPENED WIRE HARNESS MIS-ADJUSTMENT OF SWITCHES CONTROL PANEL TACT SWITCH RELAY RY1 RELAY RY2 RELAY RY3 RELAY RY4 RELAY RY5 RELAY RY6 FOIL PATTERN ON P.W.B. LIMITATION OF OPERATION
ABCDEEEFFGH I J JKK LMNNNNNNO
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. (Display
operates.)
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 operate
properly when STOP button is
pressed.
Oven does not start when the
START button is pressed.
(Display operates.)
Oven lamp does not light.
(Turntable motor operates.)
Fan motor does not operate.
(Oven lamp lights.)
Turntable motor does not
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 operating
properly during variable cooking
condition except 100% cooking
condition.
Oven goes into cook cycle but
shuts down before end of
cooking cycle.
Grill heating element (top)
doesn't operate.
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.)
Grill heating element (top)
doesn't operate.
Bottom heating element doesn't
operate.
OFF
CONDITION
COOKING
CONDITION
(COMMON MODE)
MICROWAVE
COOKING
CONDITION
GRILL
COOKING
CONDITION
DUAL
COOKING
CONDITION
TEST PROCEDURE
POSSIBLE CAUSE
AND
DEFECTIVE PARTS

Sharp R-677W Specifications

General

Brand	Sharp
Model	R-677W
Category	Microwave Oven
Language	English