The "Replace Photoconductor" (or "Replace Photoconductor") message means that the photoconductor unit (PCU) is at the end of its service life, and must be replaced.
The images in this article depict the Aculaser C1100, but the procedures are the same for the Aculaser CX11N, CX21N and all variants.
This article is a technical explanation of the issue. If you only want to know how to replace the PCU, see the following Related Article instead: AcuLaser C1100, CX11N & CX21N: How to replace the Photoconductor Unit
Figure 1. The photoconductor unit (PCU) is located beneath Cover B:
10,500 colour pages 5% coverage = 42,000 B/W pages.
5250 colour pages 10% coverage = 42,000 B/W pages.
2625 colour pages 20% coverage = 42,000 B/W pages.
1000 colour pages 20% coverage = 16,000 B/W pages.
2000 colour pages 20% coverage = 32,000 B/W pages.
3000 colour pages 20% coverage = 48,000 B/W pages.
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.
Whether or not you can print without replacing the PCU immediately depends upon the printer model:
Figure 2. Error light above the Start/Stop button.
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