Sharp Carousel R-312AK Service Manual - Page 11

Browse online or download pdf Service Manual for Microwave Oven Sharp Carousel R-312AK. Sharp Carousel R-312AK 36 pages. Sharp operating instruction microwave oven r-305a- r-305b- r-308a- r-309b- r-310a- r-312a-
Also for Sharp Carousel R-312AK: Operation Manual (24 pages), Quick Manual (2 pages)

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When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks. Many

of the possible causes of trouble will require that a specific test be performed. These tests are given a procedure letter which

will be found in the "Test Procedure"section.

IMPORTANT: If the oven becomes inoperative because of a blown monitor fuse in the monitor switch and primary interlock

switch circuit, check the monitor switch and primary interlock switch before replacing the monitor fuse. If

monitor fuse is replaced, the mintor switch should be replaced at the same time.

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 recepta-

cle.

OFF

All letters and indicators do not

CONDITION

appear in display when power cord

is first plugged into wall outlet.

Display does not operate prop-

erly when STOP/CLEAR key is

touched. (Buzzer should sound

and ":" or time of day should ap-

pear in display.)

Oven lamp does not light when

door is opened.

Oven lamp does not go out when

door is closed.

Oven lamp does not light in cook-

ing cycle. (Lights when door is

opened.)

Oven lamp does not light at all.

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

COOKING

little or no heat is produced in

CONDITION

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 pro-

duced in oven load (food).

Oven does not cook properly

when programmed for Cooking

Power 5 mode. (Operates prop-

erly on Cooking Power 10 (HIGH)

mode.)

Oven goes into COMPU DE-

FROST but food is not defrosted

well.

TROUBLESHOOTING GUIDE

RE RE A B C D E F F G H RE RE CK J CKCK CK L K M N

R-312AW

R-312AK

CK = Check / RE = Replace