Sharp R-450C, Service Manual

Page: 9 / 36

R-450C
7
CK = Check / RE = Replace
Home fuse blows when power
supply cord is plugged into wall
outlet.
FUSE M10A blows when
power supply cord is plugged
into wall outlet.
Display does not show
anything when power supply
cord is plugged into wall outlet.
Display does not operate
properly when STOP/CLEAR
pad is touched.
Oven lamp does not light at
door
opened. (Display
appears.)
Oven does not start when the
START
pad is touched.
(Display appears)
Oven lamp does not light
(Display 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
MEDIUM HIGH, MEDIUM,
MEDIUM 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
cooking cycle.
Oven stops as soon as when
the START pad is touched.
M
A
G
N
ET
R
O
N
PO
W
ER
T
R
A
N
SF
O
R
MER
H
.V.
R
EC
T
IF
IER
A
SSEMBL
Y
H
IG
H
VO
L
T
A
G
E
C
A
P
A
C
IT
O
R
1
ST
.
L
A
T
C
H
SW
IT
C
H
2
N
D
.
L
A
T
C
H
SW
IT
C
H
ST
O
P
SW
IT
C
H
MO
N
IT
O
R
SW
IT
C
H
N
O
ISE
F
IL
T
ER
MO
N
IT
O
R
R
ESI
ST
O
R
T
EMPER
A
T
U
R
E
F
U
SE
(MG
)
T
H
ER
M
A
L
C
U
T
-O
U
T
(O
VEN
)
F
A
N
MO
T
O
R
T
U
R
N
T
A
BL
E
MO
T
O
R
F
U
SE
M1
0
A
H
IG
H
VO
L
T
A
G
E
F
U
SE
T
O
U
C
H
C
O
N
T
R
O
L
P
A
N
EL
KEY
U
N
IT
R
EL
A
Y
(R
Y-1
,
R
Y-2
)
F
O
IL
P
A
T
ER
N
O
N
P.
W
.B.
PO
W
ER
SU
PPL
Y
C
O
R
D
O
VEN
L
A
MP
O
R
SO
C
KET
SH
O
R
T
ED
W
IR
E
H
A
R
N
ESS
O
PEN
ED
W
IR
E
H
A
R
N
ESS
W
A
L
L
O
U
T
L
ET
H
O
ME
F
U
SE
O
R
BR
E
A
KER
W
R
O
N
G
O
PER
A
T
IO
N
MI
S
A
D
JU
ST
MEN
T
SW
IT
C
H
BL
O
C
KED
C
O
O
L
IN
G
F
A
N
BL
O
C
KED
VEN
T
IL
A
T
IO
N
O
PEN
IN
G
A B C D E E E E F G H H I I J K L M N O
RE RE CK CK CK CK CK CK CK CK
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
TEST PROCEDURE
PROBLEM
CONDITION
OFF
CONDITION
ON
CONDITION