Yellow in wrong position
Description
The toner cartridge is installed in the incorrect slot.
Recommended action
Make sure that each toner cartridge is installed in the correct slot. From front to back, the toner cartridges are installed in this order: black, cyan, magenta, and yellow.
Yellow Very Low
Description
The toner cartridge is at the end of its useful life. When a color toner cartridge becomes very low, the product prints in black only to prevent fax interruptions. When you choose to replace the very low toner cartridge, color printing resumes automatically.
Recommended action
To ensure optimal print quality, HP recommends replacing the toner cartridge at this point. You can continue printing until you notice a decrease in print quality. Actual cartridge life may vary.
Once an HP supply has reached very low, HP's premium Protection Warranty on that supply has ended. All print defects or cartridge failures incurred when an HP supply is used in continue at very low mode will not be considered to be defects in materials or workmanship in the supply under the HP Print Cartridge Warranty Statement.
Accessing the event log requires touching the Left Arrow 
button and the Cancel 
button on the touchscreen when they are not illuminated. Use the figure below to locate these buttons on the touchscreen.
Figure
ENWW | Troubleshooting tools 175 |