Sharp Carousel R-1405, Carousel R-1406, Service Manual

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12
R-1405 R-1406
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 140ûF (60ûC) 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 button is pressed.
Hood fan motor does not rotate at all with touched FAN button.
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