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R-1500
R-1501
R-1505
R-1506
CK = Check / RE = Replace
POSSIBLE CASE AND
DEFECTIVE PARTS
PROBLEM
TEST PROCEDURE
CONDITION
OFF
CONDITION
IDLE
CONDITION
MICROWAVE
COOKING
CONDITION
Home fuse blows when power cord is plugged into wall receptacle.
Monitor fuse blows when power cord is plugged into wall receptacle.
Display does not illuminate when power cord is first plugged into wall
receptacle.
Display does not operate properly when STOP/CLEAR button is touched.
(The time of day should appear on the display with beep sound during
normal condition.)
Oven lamp does not light with door is opened.
Hood fan motor operates when power cord is first plugged into wall
receptacle.
Temperature of oven base seems more than 140˚F (60˚C) because of
operation of the range below. But hood fan motor does not turn on
automatically. (Normally, food fan motor should be operating at low
speed.)
Hood lights do not turn on when LIGHT HI/LO button is pressed.
Hood fan motor does not rotate at all with touched FAN HI/LO button.
Speed of the hood fan motor does not change when the FAN HI/LO button
is touched for this function.
Oven lamp does not light in cook cycle. (But it does light when door is
opened.)
Fan motor does not operate. (Oven lamp and turntable motor operate.)
Turntable motor does not operate (Oven lamp lights and fan motor
operate.)
Oven does not go into cook cycle when START button is touched
Oven seems to be operating but little or no heat is produced in oven load.
(Food incompletely cooked or not cooked at all at end of cook cycle.)
Oven goes into a cook cycle but extremely uneven heating is produced in
oven load (food).
Variable cooking does not operate properly except Cooking Power 10 (P-
HI) mode.
Function of DEFROST CENTER does not operate properly.
Oven goes into DEFROST CENTER but food is not defrosted well.
CK LOW VOLTAGE
CK NO POWER AT OUTLET
RE SHORT IN POWER CORD
CK OPENED OR SHORTED WIRING
CK HOOD MOTOR CAPACITOR
RE HOOD LAMP OR SOCKET
RE TURNTABLE MOTOR
RE FAN MOTOR
RE OVEN LAMP OR SOCKET
P FOIL PATERN ON P.W.B.
O DEFROST CENTER
N RELAYS (RY-5), (TY6)
N RELAY (RY-4)
N RELAY (RY-3)
N RELAY (RY-2)
N RELAY (RY-1)
M KEY UNIT
L CONTROL UNIT
K HOOD FAN MOTOR
J HOOD HERMAL CUT-OUT
I MONITOR FUSE
H MONITOR SWITCH
G
SECONDARY INTERLOCK SYSTEM
F PRIMARY INTERLOCK SWITCH
E
TEMPERATURE FUSE OR THERMAL CUT-OUT
D HIGH VOLTAGE CAPACITOR
C H.V. RECTIFIER
B POWER TRANSFORMER
A MAGNETRON