8/30/2023 0 Comments Nordyne serial number age![]() Where there is only an external serial number, this may also follow the main sequence (as with FKB4700 models), but often it does not. ![]() In these cases, the main sequence serial number is recorded on the internal label affixed to the PCB. Many Fujitsu keyboards use separate serial numbers internally and externally. The datasheet for FKB4701 Series confirms the month codes and the year range from P (2000) to Z (2010). It has been confirmed for the year range 1980–2010. The year is represented with a single character, using every letter of the alphabet, and wrapping around from Z back to A in 1985. The positions have the following interpretations: y Year of production (A–Z) see under examples below m Month of production (0–9, X–Z) see table below sssss Running digits (four up to around 1984, and five from around 1985 onwards external serial numbers can have six running digits) t A suffix letter, not explained often “t”, but “e” has also been seen The “main sequence” format appears is as follows: Jump to page content Main site navigation:įujitsu used multiple serial number formats.
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