GE Profile Performance ADVANTIUM SCA2000BAA Service Manual page 48

DIAGNOSING COOKING PROBLEMS
An important part of diagnosing any consumer
cooking concern is listening carefully to the con-
sumer describe the problem. Equally important
is asking the consumer the right questions. The
following diagnostic information is intended as a
guide for you to follow when addressing cooking
concerns:
Food Items Appear to be Under Cooked
Foods which appear to be under cooked or par-
tially cooked can be the result of anyone of the
following items. The possible causes listed be-
low are sorted from most likely to least likely, with
item #1 being the first item that you should check.
1. Is the consumer selecting the correct type
of cooking (microwave vs speedcook),
and/or is the consumer using the correct
time and power levels for the type, size
and quantity of food being cooked (see
the Advantium cooking guide - Page 18
of this service guide)?
2. Is the consumer using the correct cook-
ware for the type of food being cooked
(see pages 5 & 17 of the Use & Care
guide, page 5 & 6 of the Advantium cook-
book, and page 20 of this service guide)?
3. Is the consumer arranging the food prop-
erly on the metal cooking trays (see page
20 of this service guide)?
4. Is the turntable operating properly so that
microwave energy and halogen heat is
being evenly distributed to the food?
5. Inspect the upper and lower halogen lamp
covers to ensure that they are free of
grease and food spatterings. Build ups of
grease and food spatterings can cause a
decrease in cooking performance.
6. Confirm proper line voltage to the unit
(check voltage under full load).
7. Confirm that voltage compensation is op-
erating properly (see pages 25 and 59 of
this service guide for details and diagnos-
tic information).
8. Confirm that the upper and lower halogen
lamps are operating (illuminating).
9. Check upper and lower halogen lamp op-
eration at power level 10 and again at
power level 5 to be sure that lamps are
cycling properly. At this point you must
have a thorough understanding of power
level operation, upper halogen lamp bal-
ance operation, and thermal compensa-
tion (see pages 24-27 and page 59 of this
service guide for detailed information).
10. Perform a microwave performance test
(Pg. 48) to confirm that microwave energy
output (HV/magnetron circuit) is operat-
ing to specification (see mini manual in-
side control panel area for performance
test procedures and expected results).
11. Are all fan motors operating properly (Pg.
30)? During speedcook operation
motors must operate (vent fan {slow
speed}, upper halogen lamp blower, lower
halogen lamp blower, and magnetron
blower). Improper airflow can cause the
halogen lamps or magnetron tube to cycle
on the thermal cut outs (TCOs).
Food Items Appear to be Over Cooked or
Burned
Foods which appear to be over cooked or burned,
can be the result of anyone of the following items.
The possible causes listed below are sorted from
most likely to least likely, with item #1 being the
first item that you should check.
1. Is the consumer selecting the correct type
of cooking (microwave vs speedcook),
and/or is the consumer using the correct
time and power levels for the type, size
and quantity of food being cooked (see
the Advantium cooking guide - Page 18
of this service guide)?
2. Is the consumer using the correct cook-
ware for the type of food being cooked
(see pages 5 &17 of the Use & Care guide,
page 5 & 6 of the Advantium cookbook,
and page 20 of this service guide)?
3. Is the consumer arranging the food prop-
erly on the metal cooking trays (see page
20 of this service guide)?
4. Is the turntable operating properly so that
microwave energy and halogen heat is
being evenly distributed to the food?
5. Confirm proper line voltage to the unit
(check voltage under full load).
6. Confirm that voltage compensation is op-
erating properly (see pages 25 & 59 of
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fan
ALL