Test Procedure - Sharp R-308CK Service Manual

R-3 0 8CK
R-308CW
R -310 CK
R-310CW

TEST PROCEDURE

PROBLEM
CONDITION
Home fuse or circuit breaker blows
when power cord is plugged into wall
receptacle
Monitor fuse blows when power cord
is plugged into wall receptacle.
OFF
All letters and indicators do not ap-
CONDITION
pear in display when power cord is
first plugged into wall outlet.
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
is opened.
Oven lamp does not go out when
door is closed.
Oven lamp lights but fan motor and
turntable motor do not operate.
Oven does not go into cook cycle
when START pad 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
COOKING
extremely uneven heating is pro-
CONDITION
duced in oven load (food).
Oven does not cook properly when
programmed for Cooking Power 5
mode. (Operates properly on Cook-
ing Power 10 (HIGH) mode.)
Oven goes into COMPU DEFROST
but food is not defrosted well.
PROCEDURE
LETTER
A MAGNETRON ASSEMBLY TEST
1. Disconnect the power supply cord, and then remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
RE RE A B C D E F F G H RE RE CK I CK CK CK J
TEST PROCEDURES
COMPONENT TEST
10
CK = Check / RE = Replace
K L M