HP 220240 - Manual (Page 178)

7.3 Replacing the EP-S Cartridge
When the ‘‘16 TONER LOW’’ message is displayed, it means that the printer
is either running out of toner or the toner is not being distributed evenly.
Before replacing the EP-S cartridge, make sure that the toner is really
depleted. Rock the cartridge back and forth gently to redistribute any
remaining toner as shown in Figure 7–1.
Figure 7–1: Rocking the EP-S Cartridge
MLO-004362 (Figure 7-25; 16.5 picas)
Reinstall the cartridge and try printing. If the toner low message does not
appear or printing is acceptable, the cartridge will last for a while longer.
If the toner low message remains on and the print quality is not acceptable,
you need to replace the EP-S cartridge.
Replacing the EP-S cartridge requires the following:
• Cleaning the fixing roller
• Replacing the fixing roller cleaner
• Cleaning the transfer corona wires and discharging pins
You should perform all of these procedures each time you replace the EP-S
cartridge to ensure optimum print performance.
7–22 Operator’s Guide