Service manual

R-671 - 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 15A (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
