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Convert the service ID to an actual date
You can use the device service ID number to determine whether the device is still under warranty. Use
the following procedure to convert the service ID into the installation date.
1. Add 1990 to YY to determine the actual year that the device was installed.
2. Divide DDD by 30 and add 1 to the remainder. The total is the month.
3. The remainder from the calculation in step 2 is the day of the month.
Using the Service ID 12287 as an example, the date conversion is as follows:
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12 + 1990 = 2002, so the year is 2002.
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287 divided by 30 = 9 with a remainder of 17. Add 1 to 9 to get 10 so the month is October.
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The remainder (from the above calculation) is 17, so that is the day of the month.
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The complete date is 17-October-2002.
A six-day grace period is built into the date system.
ENWW Service mode functions 163