User Manual
Troubleshooting
These chapters help you solve problems that may occur while printing; they include the following topics:
● Troubleshooting paper issues on page 83
● Troubleshooting print-quality issues on page 93
● Troubleshooting ink cartridge and printhead issues on page 104
● Troubleshooting data communication issues on page 106
● Troubleshooting general printer issues on page 113
● Front-panel error messages on page 116
Accessories, support and specications
These chapters, Accessories on page 78, HP Customer Care on page 118, and Printer specications
on page 122, contain reference information, including customer care, the printer specications, and part
numbers for paper types, ink supplies, and accessories.
Glossary
The Glossary on page 127 contains denitions of printing and HP terms used in this documentation.
Index
In addition to the table of contents, there is an alphabetical index to help you to nd topics quickly.
Warnings and cautions
The following symbols are used in this manual to ensure the proper use of the printer and to prevent the printer
from being damaged. Follow the instructions marked with these symbols.
WARNING! Failure to follow the guidelines marked with this symbol could result in serious personal injury or
death.
CAUTION: Failure to follow the guidelines marked with this symbol could result in minor personal injury or
damage to the printer.
Printer models
This guide covers the following printer models, normally referring to them by their short names for brevity.
Full name Short name
HP DesignJet T120 24-in Printer T120
HP DesignJet T520 24-in Tabletop Printer T520-24T
HP DesignJet T520 24-in Printer T520-24
HP DesignJet T520 36-in Printer T520-36
ENWW Printer models 3