Specifications

Ver SG 9/200 50 Sharp Electronics Corporation
Compu-Cook, Compu-Defrost & Express Defrost
Compu-cook, Compu-defrost & Express defrost are recipes programmed in the
microprocessor. These recipes are three stages of cook time/power level combinations
and were determined by actual test cooking of the foods on the menus. Each food has its
own-programmed recipe, which may differ from model to model. The following pages
contain tables, which have examples of cooking programs according to the model oven.
Express & Compu defrost tables precede the compu-cook table.
To troubleshoot an oven with a compu-cook or compu-defrost complaint the following
procedure should be followed.
Check the oven cavity to insure it is clean. If food and or grease is allowed to build up
within the oven cavity it will reduce the energy available to heat the food load.
Check the supply voltage going to the oven. For every volt that is down from the rated
voltage requirement, a 10 watt power loss will be experienced. Compu-cook and compu-
defrost rely on time calculations and will be the same regardless of power output.
Check the power output of the magnetron (using one of the methods described in the
magnetron section of this manual). A indication of + or – 10% would require
replacement of the magnetron tube.
Check to confirm the timing cycle for the recipe is correct. Refer to the service manual
for the model you are working on.
If all of the above checks prove good then the trouble is a customer-related problem.
Perhaps the customer is guessing at weights or trying to cook quantities greater than the
recipe allow. Perhaps the customer is not following the recipe and not stirring when they
should or not covering the food when advised by the control. Perhaps the customer
prefers their food cooked more or less than the way the oven was programmed to cook
that particular food. The list of customer related problems could go on and on. The
probability of the control miscalculating time is almost nil. Most of all compu-cook or
compu-defrost trouble will be found in:
1) Customer related problems
2) Unclean oven cavities
3) Low line voltage
4) Weak magnetron tubes