Hp Designjet t770 hard disc 21.0:10 error

[MichaelPat]

Hi all

This error code has come up on my printer 

21.0:10 does anyone know how this can be fixed?

regards Michael

[Valsimot]

Replacing the disk, they are known to fail and you can get them cheap on eBay. You can't install any disk, the printer firmware must be preloaded on the new disk.

[MichaelPat]

 

Thanks,

but I got the error code wrong 🙄

its actually 22:0.10

[D Hook]

From the Service Manual:

System Error: 22.0:YZ
Problem Description: Left Ink Supply Station error, module 0.
Corrective action: Try the following:
1. Switch the power off from the back of the printer and disconnect the power cord.
Reconnect the power cord and power on the printer.
2. Check that the cables between the Left Ink Supply Station and Main PCA the are not
damaged and are correctly connected.
3. Perform the Ink Delivery System diagnostic test to troubleshoot the problem further. See
Ink Delivery System (IDS) Test on page 116.
4. Replace the Left Ink Supply Station. See Ink Supply Station, Left on page 283.
5. Replace the Main PCA. See Electronics Module Main PCA and PSU on page 256

If you don't have a service manual already, here's a link:

  https://www.laserexpressinc.com/manuals/HP/hp-dsj-t770-t1200-service-manual.pdf

You should be able to download the whole manual.  You may need it to do further trouble shooting and repairs.  (Warning; it's a very big document, around 600 pages IIRC.  Not a problem to download but printing it out is quite a project, if you decide to do that.)