How to compare your usage to Epson's specification
Check how many pages the printer has printed to date:
Check the Information Menu via the printer control panel. Alternatively, print a Status Sheet (if able to print, or when you have replaced the PCU). For instructions, see your reference guide or one of the following Related Articles:
Multiply your colour pages by 4, then add this figure to your black & white pages.
Compare this figure to the maximum page count of 42,000 black & white copies, per photoconductor, when printing at 5% coverage. This should establish that your Replace Photoconductor message is a result of normal usage for your coverage.
14,649 total pages
2082 colour pages
12,567 black & white pages
2082 x 4 = 8328
8328 + 12,567 = the equivalent of 20,895 B/W pages.
As this is around half the figure of 42,000 for 5% coverage, this would be normal operation for an average of 10% coverage.