2nd btr unit differences

[GabiE-Xerox]

I think is about date of manufacture, manufacturer, or some improvements. On the other hand the last part number is the one can be ordered, older p.n. cannot be.

[SergioMorillas]

Thank you,

why the 2nd BTR has so many part numbers? there are more, right?

[GabiE-Xerox]

Hi,

It should be no differences between them.They are all 2ND BTR for Phaser 7500. 

[SergioMorillas]

Hello

what is the difference between the following pn's?

059K 53655

059K 53658

059K 53659

859K 03830

859K 03831

Thank you very much in advance