HP Color LaserJet Enterprise M751n Laser Printer - Manual (Page 83)

Replace the toner-collection unit
Toner-collection unit information
Replace the toner collection unit when the control panel prompts you.
Item Description Cartridge number Part number
HP Toner Collection Unit Replacement toner-collection unit Not applicable 3WT90A
CAUTION: When the toner collection unit reaches the end of its life, the printer will stop printing to avoid
damage to internal parts. You must replace the toner collection unit to continue printing.
NOTE: The toner collection unit is designed for a single use. Do not attempt to empty the toner collection unit
and reuse it. Doing so could lead to toner being spilled inside the printer, which could result in reduced print
quality. After use, return the toner collection unit to HP’s Planet Partners program for recycling.
CAUTION: If toner gets on clothing, wipe it off by using a dry cloth and wash the clothes in cold water. Hot water
sets toner into fabric.
Remove and replace the toner-collection unit
1. Open the front door.
2. Open the left door.
ENWW Replace the toner-collection unit 73