HP Designjet T620 610 mm User Manual

Cannot insert an ink cartridge
1.Check that you have the correct type of cartridge (model number).
2. Check that the colored label on the cartridge is the same color as the label on the slot.
3. Check that the cartridge is correctly oriented, with the letter or letters marking the cartridge label
right-side up and readable.
CAUTION: Never clean inside the ink cartridge slots.
Ink cartridge status messages
These are the possible ink cartridge status messages:
●OK
: the cartridge is working normally, with...

The front-panel display recommends reseating or
replacing a printhead
1.From the front panel, turn the power off then on.
2. Check the front-panel display message, if it shows the ready message, the printer is ready to print.
If the problem remains continue with the next step.
3. Remove the printhead, see 
Remove a printhead on page 88.
4. Clean the electrical connections on the backside of the printhead with a lint free cloth. You can
carefully use a mild rubbing alcohol if moisture is needed to remove...

When the front panel displays a warning message that the clean process is needed, you are
recommended to clean the printhead drop detector. If you do not clean the printhead drop detector
immediately, the printer continues working normally, however, the front panel display continues to show
the warning.
CAUTION:Wear gloves to avoid getting ink on your hands.
1.Turn off the printer at the front panel.
2.To avoid an electric shock, switch the printer off and unplug it.
3.Open the window.
140 Chapter 14...

4.Find the printhead drop detector beside the stored printhead carriage.
5.Remove any debris blocking the printhead drop detector.
6. With a dry lint free cloth, wipe the surface of  the drop detector to remove any non-visible debris.
7.Close the window.
ENWW Clean the printhead drop detector 141
Ink system issues
 

8.Plug in and switch on the printer.
9.Power the printer on at the front panel.
Align the printheads
Precise alignment between printheads is essential for accurate colors, smooth color transitions and
sharp edges in graphical elements. Your printer has an automatic printhead alignment process which
runs whenever a printhead has been accessed or replaced.
In cases where the paper has jammed or you are experiencing problems with color accuracy, see 
Color
management on page 53; you may need to align the...

4.Ensure the window is closed, as a strong light source near the printer during printhead realignment
can affect alignment.
5.The process takes about six minutes. Wait until the front-panel display shows the process complete
before using the printer.
NOTE: The printer prints a calibration image. Do not worry about the image. The front-panel
display shows any errors in the process.
Image Quality Maintenance menu procedure
1. Load the paper you wish to use, see Paper handling on page 23. You can use a roll...

Printhead status messages
These are the possible printhead status messages:
●OK
: the printhead is working normally, with no known problems
● Missing
: there is no printhead present, or it is not correctly installed in the printer.
● Test printhead separately: you are recommended to test the printheads individually to find the
failing printhead. Remove all the printheads and insert them alone one by one, closing the latch
and the carriage cover after every insertion. The front-panel display indicates the...

15 Troubleshooting general printer issues
●The printer does not print
●
The printer seems slow
●
Communication failures between computer and printer
●
Cannot access the HP Printer Utility
●
Cannot access the Embedded Web Server
●
Automatic file system check
●
An AutoCAD 2000 memory allocation error
●
No output when printing from Microsoft Visio 2003
●
Unavailable driver features when printing from QuarkXpress
●
Printer alerts
ENWW 145
General printer issues
 

The printer does not print
If all is in order (paper loaded, all ink components installed and no file errors), there are still reasons
why a file you have sent from your computer may not start printing when expected:
●You may have an electrical power problem. If there is no activity at all from the printer, and the front
panel does not respond, check that the power cable is connected correctly and that there is power
available at the socket.
● You may be experiencing unusual electromagnetic phenomena,...

To solve a communication problem:
●Ensure that you have selected the correct printer in your application, see 
Printing on page 45.
● Ensure that the printer works correctly when printing from other applications.
● Remember that very large prints may take some time to receive, process and print.
● If the printer is connected to a network, try using it when connected directly to your computer
through a USB cable.
● If your printer is connected to your computer through any other intermediate devices, such...