Sharp R-380A, Service Manual

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R-380A
8
Home fuse blows when power
supply cord is plugged into wall
outlet.
FUSE M8A blows when power
supply cord is plugged into wall
outlet.
Display does not show any-
thing when power supply cord
is plugged into wall outlet.
Display does not operate prop-
erly when STOP/CLEAR pad
is touched.
Oven lamp does not light at
door opened. (Display ap-
pears.)
Oven does not start when the
START pad is touched. (Dis-
play appears)
Oven lamp does not light (Dis-
play appears.)
Fan motor does not operate.
(Display appears.)
Turntable motor assembly 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
but little or no heat is produced
in oven load. (Microwave power
level is set at HIGH)
Oven does not seems to be
operating properly when ME-
DIUM HIGH, MEDIUM, ME-
DIUM LOW or LOW is set.
(Oven operates properly at
HIGH and then the STOP/
CLEAR pad is touched the oven
stops.)
Oven goes into cook cycle but
shuts down before end of cook-
ing cycle.
Oven stops as soon as when
the START pad is touched.
AH sensor does not end during
Sensor Cooking condition.
(Oven does not shut off after a
cup of water is boiling by sen-
sor cooking.
Oven stops at 16 sec. after
starting.
TEST PROCEDURE
CK = Check / RE = Replace
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
CONDITION
PROBLEM
ON
CONDITION
OFF
CONDITION
MAGNETRON POWER TRANSFORMER H.V. RECTIFIER ASSEMBLY HIGH VOLTAGE CAPACITOR 1ST. LATCH SWITCH 2ND. LATCH SWITCH STOP SWITCH MONITOR SWITCH MONITOR RESISTOR THERMAL CUT-OUT 95˚C /125˚C FAN MOTOR TURNTABLE MOTOR FUSE M8A TOUCH CONTROL PANEL KEY UNIT RELAY (RY-1, RY-2) FOIL PATERN ON P.W.B. POWER SUPPLY CORD SHORTED WIRE HARNESS OPENED WIRE HARNESS OVEN LAMP OR SOCKET WALL OUTLET MISADJUSTMENT SWITCH HOME FUSE OR BREAKER BLOCKED COOLING FAN BLOCKED VENTILATION NOISE FILTER AH SENSOR
SENSOR
COOKING
CONDITION
A B C D E E E E G F H H I K L M N
RE CK CK RE CK CKCK CK CK
J O