Panasonic NN-V673SBBPQ, Service Manual

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the food is covered, this steam builds up and eventually escapes from the container. In auto
sensor cooking, a carefully designed instrument, called the humidity sensor element, senses the
escape of steam. then, based upon the auto sensor program selected, the unit will automatically
determine the correct power level and the proper length of time it will take to cook the food.
NOTE: Auto sensor cooking is successful with the foods and recipes found in the auto sensor
cooking guide. Because of the vast differences in food composition, items not mentioned in the
cooking guide should be prepared in the microwave oven using the power select and time
features. Please consult variable power microwave cook book for procedures.
/ Explanation of the auto sensor cooking process
1. During the first 10 second period there is no microwave activity,
and when calculating the T2 time by using the formula below make
sure this 10 seconds is subtracted from the T1 time. In other
words the T1 time starts at the end of the 10 second period.
2. T1 Time... The total amount of time it takes the microwave oven to
switch to T2 time after the 10 second period.
3. T2 Time... When the steam escapes from the cooking container
placed in the oven, the steam sensor detects it and the
microprocessor calculates the balance of cooking time. This T2
time is then shown on the display and begins counting down.
Balance of cooking (T2 time)
The balance of cooking time which is called T2 time, can be calculated by the following formula.
/ T2 time (in sec.) = T1 time x K factor
NOTE: Remember, the T1 time starts after the 10 second period. The coefficient K is programmed
into the microprocessor memory and they are listed in the following table along with the P1 and
P2 powe rs. /
NOTE: When “More” or “Less” pad is selected, the K factor varies resulting in T2 time is either
increased or decreased.
Calculating the T2 time
Example 1: If the T1 time is measured to be 2 minutes and 40 seconds after the 10 second period,
and the Auto program is selected is Fish:
T2 = T1 x K
= 2 min 40 sec. X. 0.1
= 160 sec. x 0.1
= 16 sec.
Catergory P1 POWER P2 POWER K FACTOR
STANDARD
1. Chilled
meal HIGH HIGH 1.0
2. Frozen
meal HIGH HIGH 0.8
Figure 1
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