HP Designjet T7100 User Manual

8.Using the blue handle, gently disengage the printhead.
9.
Gently pull the blue handle upward until th
e printhead is released from the carriage.
CAUTION:Do not pull abruptly. That action can damage the printhead.
10.The front-panel display identifies the missing printhead.
ENWW Work with ink system components
53
Handle the ink system
 

Insert a printhead
1.Remove the orange protective 
caps by pulling them down.
2.The printhead is designed to prevent you from acci
dentally inserting it into the wrong slot. Check
that the colored label on the printhead matches th e colored label of the carriage slot into which
the printhead is to be inserted.
3. Insert the new printhead into its correct slot in the carriage.
CAUTION:
Insert the printhead slowly and vertically, straight down. It can be damaged if you
insert it too quickly, or at an...

5.Insert all of the other printheads that need 
to be installed, and close the carriage cover.
6.Make sure that the end of the blue handle catche
s the wire loop on the near side of the carriage.
7.Lower the handle to rest on the carriage cover.
When all of the printheads have been inserted 
correctly and the printer has accepted them, the
printer beeps.
NOTE: If the printer does not beep when  you insert the printhead and the  Replace message
appears on the front-panel display, you  might need to...

9.The front-panel display confirms that all of the 
printheads are correctly inserted, and the printer
starts checking and preparing the printheads. The  default routine process, when all printheads are
changed, takes about 18 minutes. If the prin ter identifies a problem when preparing the
printheads, the process takes longer , up to 30 minutes. For a single printhead insertion, the time
varies between 10  and 20 minutes.
10. After all printheads are checked and prepared, the printhead realignment...

2.Cover your finger with the cloth and insert
 it into the printhead slot at the back.
CAUTION:If the carriage remains in the central part  of the printer for more than 7 minutes, it
attempts to return to its  home position to the right.
3.Rub the cloth against the electrical contacts with a 
light force along the entire depth of the flex
connector. Try to avoid picking  up any ink deposit that may have accumulated on the bottom
surface of the slot.
4. Take special care to clean all contacts thoroughly
,...

6.After waiting a few moments to 
allow both connectors to dry, replace the printhead into the
printhead carriage. See 
Insert a printhead on page 54.
7. Wash or dispose of the cloth. Take care to prevent the transfer of ink onto hands and clothing.
If the front panel continues to show the Reseat  or Replace  message, replace the printhead or contact
your HP customer service representative.
Clean the printhead drop detector
The printhead drop detector is a se nsor that detects which nozzles on the...

5.Find the printhead drop detector to 
the right of the printhead carriage.
6.Remove any debris blocking 
the printhead drop detector.
7. With a dry, lint-free cloth, wipe the surface of th
e drop detector to remove any non-visible debris.
8.Close the printer window.
9.Plug in and switch on the printer.
10. 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....

NOTE:If the paper has jammed, it is recommended that  you reinsert the printheads and initiate the
realignment procedure with the  Image Quality Maintenance menu 
.
CAUTION:Do not use transparent or semi-trans parent paper to align the printheads.
Reinsert printheads procedure
1.If the realignment process is running an
d the wrong paper is loaded, press the  Cancel key on the
front panel.
CAUTION: Do not print if the realignment process  has been canceled. You can restart the
alignment with the Image...

If the problem persists after correcting these potent ial problems, there may be a failure in the scanning
system requiring repair, or the prin theads may need to be replaced.
The Image Diagnostics Print
The Image Diagnostics Print consists of patterns desi gned to highlight printhead reliability problems. It
helps you to check the performance of the printheads  that are currently installed in your printer, and
whether any printhead suffers from clogging or other problems.
To print the Image Diagnostics...

Here is an example of a gray printhead in a good state:
And here is an example of the same printhead in a bad state:
Corrective action
1.Clean any faulty printheads (see Clean (recover) the printheads on page 56
). Then reprint the
Image Diagnostics Print to see whet her the problem has been solved.
2. If the problem remains, clean the printheads agai
n, and reprint the Image Diagnostics Print to see
whether the problem has been solved.
3. If the problem remains, consider cleaning your printheads...