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HP Designjet 500 / 800 Carriage Latch Repair Kit --Save the Cost of a New Tube System

  • $ 4895

HP Designjet 500 / 800 Printhead Cover | Carriage Latch Frame with Tools

Repair your broken tube system carriage latch - Don't replace the tubes!

C7769-40041, C7769-69376, C7769-60381, C7770-60286


If your machine is telling you "Open window and check printhead cover is properly closed," the most likely cause is the upper frame on the ink tube system is cracked or broken. The printhead cover on the carriage locks into the lower latch in the ink tube system. If the lower latch is compromised, the machine will not function. 

Watch the video tutorial for the repair procedure here.

If your ink tube system is leaking, or otherwise broken beyond repair, you can find the replacement ink tube systems here:

24" Ink Tube

42" Ink Tube

This replacement frame is designed by LPS. This kit includes: 

  • Heavy-Duty Latch Frame --Built to LAST

  • Torx T-8 and T-15 bits required to perform the repair

  • Strip of black plastic tape to reinforce the lower frame, and contain ink tubes in their proper channels

  • Purple Latch for the printhead cover (optional)

  • Lifetime Warranty

For use with HP Designjet 500, 510, 800 24" and 42" printers. 

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Customer Reviews

Based on 60 reviews
William Shelton
Carriage Latch Repair

Watched the Youtube video and everything worked great !

Laura Bowen
Didn't fix the problem

Replaced the broken parts, but the machine will still not initialize and says the printhead cover is not closed properly. We can't get past that. Can't even turn the machine off. However the part supplied was much stronger than the original part.

Hi Laura,
Was anything else replaced on this printer? Does the carriage move before the error appears? If so, does the carriage stop in the same place every time?


Robert Maness
Print head cover latch repair.

After watching a YouTube video on repairing a broken print head cover latch, I ordered your $48 repair kit for my HP Designjet 500. Very easy to install and satisfied with the results. Thank you!

Working great

Got the latch quickly, the video tutorial helped installing it.

John D
nice 1:1 replacement

this is exactly the part/fix i was looking for to resolve the broken latch on the print head carriage. nice fix guys!