Sharp R-211A, Service Manual

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R-211A
7
TROUBLESHOOTING CHART
PROBLEM
Fuse
M6.3A
blows when power
cord is plugged into wall outlet.
Fuse
M6.3A
blows when
the door is opened.
Home fuse blows when
power cord is plugged into
wall outlet.
Oven does not operate at all.
Oven goes into cook cycle
but shuts down before end of
cooking cycle.
Oven lamp does not light.
(Fan motor rotates)
Fan motor does not operate,
but oven lamp lights.
Timer motor does not oper-
ate, but oven lamp lights.
Turntable motor does not op-
erate, but oven lamp lights.
Oven seems to be operating
but little or no heat is pro-
duced in oven load. (Micro-
wave power control is set at
"HIGH" position, and turnta-
ble motor operates.)
Oven does not operate prop-
erly in another position ex-
cept "HIGH" position.
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
TEST PROCEDURE
OFF
CONDITION
CONDITION
MAGNETRON POWER TRANSFORMER H.V. RECTIFIER ASSEMBLY HIGH VOLTAGE CAPACITOR 1ST. LATCH SWITCH 2ND. LATCH SWITCH MONITOR SWITCH TEMPERATURE FUSE 120˚C (OVEN) THERMAL CUT-OUT 95˚C (MG) TIMER MOTOR TIMER CONTACT TIMER DEFROST SWITCH FAN MOTOR TURNTABLE MOTOR FUSE M6.3A POWER SUPPLY CORD SHORTED WIRE HARNESS OPENED WIRE HARNESS OVEN LAMP OR SOCKET BLOCKED VENTILATION OPENING MISADJUSTMENT SWITCH HOME FUSE OR BREAKER WALL OUTLET BLOCKED COOLING FAN POWER SELECT SWITCH
A B C D E E E G G J J J H H I E
COOKING
CONDITION