Sharp R-520LK ユーザーズマニュアル
13
R - 5 2 0 L K
R-520LW
A
MAGNETRON ASSEMBLY TEST
1. Disconnect the power supply cord, and then remove outer case.
. Open the door and block it open.
3. Discharge high voltage capacitor.
. Open the door and block it open.
3. Discharge high voltage capacitor.
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
Home fuse or circuit breaker blows
when power cord is plugged into wall
receptacle
C/T fuse blows when power cord is
C/T fuse blows when power cord is
plugged into wall receptacle.
All letters and indicators do not ap-
All letters and indicators do not ap-
pear in display when power cord is
first plugged into wall outlet.
Display does not operate properly
Display does not operate properly
when STOP/CLEAR key is touched.
(Buzzer should sound and ":" or time
of day should appear in display.)
Oven lamp does not light when door
Oven lamp does not light when door
is opened.
Oven lamp does not go out when
Oven lamp does not go out when
door is closed.
Oven lamp lights but fan motor and
Oven lamp lights but fan motor and
turntable motor do not operate.
Oven does not go into cook cycle
Oven does not go into cook cycle
when START pad is touched
Oven seems to be operating but little
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 ex-
Oven goes into a cook cycle but ex-
tremely uneven heating is produced
in oven load (food).
Oven does not cook properly when
Oven does not cook properly when
programmed for Cooking Power P-50
mode. (Operates properly on Cooking
P-HI (HIGH) mode.)
Oven goes into COMPU DEFROST
Oven goes into COMPU DEFROST
but food is not defrosted well.
AH sensor does not end during
AH sensor does not end during
sensor cooking condition. (Oven
does not shut off after a cup of
water is boiling by sensor cooking)
Oven stops at 16 sec. after starting.
Oven stops at 16 sec. after starting.
OFF
CONDITION
CONDITION
PROBLEM
CONDITION
POSSIBLE
CA
USE
AND
DEFECTIVE
P
AR
TS
TEST PROCEDURE
RE RE A B C D E E F F G H RE RE CK I CK CK CK J K L M N
COOKING
CONDITION
CONDITION
SENSOR
COOKING
CONDITION
COOKING
CONDITION
SHOR
T
IN
PO
WER
CORD
SHOR
T
OR
OPENED
WIRING
MA
GNETR
ON
PO
WER
TRANSFORMER
H.V
. RECTIFIER
ASSEMBL
Y
HIGH
V
OL
TA
GE
CAP
A
CIT
OR
CA
VITY
TEMPERA
TURE
FUSE
MA
GNETR
ON
TEMP
FUSE
SECOND
AR
Y
INTERLOCK
SYSTEM
PRIMAR
Y
INTERLOCK
SWITCH
MONIT
OR
SWITCH
MONIT
OR
FUSE
O
VEN
LAMP
OR
SOCKET
COOLING
F
AN
MO
TOR
TURNT
ABLE
MO
TOR
TOUCH
CONTR
OL
P
ANEL
WR
ONG
OPERA
TION
LO
W
V
OL
TA
GE
DIR
TY
O
VEN
CA
VITY
KEY
UNIT
RELA
Y
(R
Y1)
COMPU
DEFR
OST
FOIL
P
ATTERN
ON
PWB
.
AH
SENSOR
CK = Check / RE = Replace