HP 4100 mfp - Manual (Page 73)

Cleaning the product 71
Toner low and toner out conditions
When toner is low, the control panel displays a TONER LOW message and the product
continues to print. The message first appears when about 15 percent of the toner
remains in the cartridge.
When the cartridge runs out of toner, the control panel displays a TONER OUT message
and printing stops. You can continue printing the current job by pressing S TART . The
message continues to appear for every job until you replace the toner cartridge.
Cleaning the product
General guidelines
Follow the cleaning procedure on the following page every time you change the toner
cartridge or when print-quality problems occur. To minimize problems, keep the product
free from dust and debris.
● Clean the outside of the product with a cloth dampened with water.
● Clean the inside of the product with a dry, lint-free cloth.
CAUTION While cleaning the product, be careful not to touch the transfer roller (the black rubber
roller located underneath the toner cartridge). Skin oils on the roller can affect print quality.