Read Sharp R-671M Service Manual online
R-671M - 10
TEST PROCEDURES
CONDITION
PROBLEM
MAGNETRON
HIGH VOLTAGE TRANSFORMER
H.V. RECTIFIER
HIGH VOLTAGE CAPACITOR
PRIMARY LATCH SWITCH
MONITOR SWITCH
STOP SWITCH
THERMAL CUT-OUT 145
˚C (HVC)
THERMAL CUT-OUT 150
˚C (OVEN)
FUSE 15A
FUSE F8A
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
TOUCH CONTROL PANEL
KEY UNIT
RELAY RY1
RELAY RY2
RELAY RY3
RELAY RY4
RELAY RY5
RELAY RY6
FOIL PATTERN ON P.W.B.
LIMITATION OF OPERATION
A B C D E E E F F G H I
J J K K
L M N N N N N N O
Fuse 15A blows when power
cord is plugged into wall outlet.
cord is plugged into wall outlet.
Fuse F8A blows when the door
is opened.
is opened.
Oven lamp does not light when
door is opened. (Display
operates.)
door is opened. (Display
operates.)
Home fuse blows when power
cord is plugged into wall outlet.
cord is plugged into wall outlet.
Nothing appear in display when
power cord is plugged into wall
outlet and open and close the
door.
power cord is plugged into wall
outlet and open and close the
door.
Display does not operate
properly when STOP key is
pressed.
properly when STOP key is
pressed.
Oven does not start when the
START key is pressed. (Display
operates.)
START key is pressed. (Display
operates.)
Oven lamp does not light.
(Turntable motor operates.)
(Turntable motor operates.)
Fan motor does not operate.
(Oven lamp lights.)
(Oven lamp lights.)
Turntable motor does not
operate. (Oven lamp lights.)
operate. (Oven lamp lights.)
Oven or electrical parts does
not stop when cooking time is 0
or STOP key is pressed.
not stop when cooking time is 0
or STOP key is pressed.
Oven goes into cook cycle but
shuts down before end of
cooking cycle.
shuts down before end of
cooking cycle.
Oven seems to be operating but
little or no heat is produced in
oven load.
little or no heat is produced in
oven load.
Oven does not operating
properly during variable cooking
condition except 100% cooking
condition.
properly during variable cooking
condition except 100% cooking
condition.
Oven goes into cook cycle but
shuts down before end of
cooking cycle.
shuts down before end of
cooking cycle.
Grill heating element (top)
doesn't operate.
doesn't operate.
Bottom heating element doesn't
operate.
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.)
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.
doesn't operate.
Bottom heating element doesn't
operate.
operate.
OFF
CONDITION
COOKING
CONDITION
(COMMON MODE)
MICROWAVE
COOKING
CONDITION
GRILL
COOKING
CONDITION
DUAL
COOKING
CONDITION
TEST PROCEDURE
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
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