Cautions To Be Observed When Troubleshooting; Check The Grounding - Panasonic NN-A872SBBPQ Service Manual

time is then shown in 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 start pad is tapped. The coefficient K is
programmed into the microprocessor memory and they are listed in the following tables along
with the P1 and P2 powe r. /
NOTE: When "More"or "Less" pad is selected, the K factor varies resulting in T2 time to be
increased or decreased.
Calculating the T2 time
Example 1: If the t1 time is measured to be 2 minutes and 40 seconds, and the auto sensor
program is selected is sensor reheat. Fish (Program 4)
T2 = T1 x K
= 2 min. and 40 sec. X. 0.3
=48 sec.
Catergory P1 POWER P2 POWER K FACTOR
1. Chilled HIGH
meal
2. Frozen MED
meal

8. Cautions to Be Observed When Troubleshooting

Unlike many other appliances, the microwave oven is a high voltage, high current is device.
Though it is free from danger in ordinary use, extreme care should be taken during repair.
Caution
Servicemen should remove their watches whenever working close
to or replacing the magnetron.

8.1. Check the grounding

STANDARD
HIGH 1.6
HIGH 0.9
Figure 1
Auto sensor cooking
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