Each drum is programmed to run for 30,000 pages. When the count is reached the printer shuts the drum unit down. You can reset your Xerox drums in just 25 seconds with out stick on reset chip.
Reset Part numbers: 108R00647,108R00648, 108R00649,108R00650. One chip will reset one drum unit.
Drum chip installation instructions
Approximate pages. Declared Yield on Drums based on an average job size of 3 pages A4/letter size. Declared Yield on Fusers based on A4/letter size 20 lb (75 gsm) pages. Drum and Fuser Yields will vary based on job run length, media type, size, weight, orientation, and usage patterns