[Error Code] Hp Designjet T770 error 79:04

[atech]

Need help for firmware error 79:04 of Hp designjet T770. Thanks

[MBT]

Re: Hp Designjet T770 error 79:04

Is this happening during power on? Or when on normally, and about to print (or printing)?

If it errors when it's about to or during printing you should try a firmware update.
If it's something else, you may want to look in the service manual at Appendix A: How to troubleshoot SE 79:04 (It starts at page 73 in my manual). If you don't have the manual, our favorite guy should be along shortly to post a link to his site where you can buy the manual.

[atech]

Re: Hp Designjet T770 error 79:04

Is this happening during power on? Or when on normally, and about to print (or printing)?

If it errors when it's about to or during printing you should try a firmware update.
If it's something else, you may want to look in the service manual at Appendix A: How to troubleshoot SE 79:04 (It starts at page 73 in my manual). If you don't have the manual, our favorite guy should be along shortly to post a link to his site where you can buy the manual.

Error appeared after initialization( start-up).

[JustManuals]

Re: Hp Designjet T770 error 79:04

This Parts & Service Manual can now be purchased for $12.77 and downloaded immediately after payment from:


Just Manuals, The Internet's largest selection of manuals ~ Instant Downloads


Paul@justmanuals.com

[MBT]

Re: Hp Designjet T770 error 79:04

After start up? Like it's about to go to ready then errors out?
Have you tried booting up with the ethernet cable unplugged? If you have, one of the things the service manual suggests is, performing a hard drive init.
Paul sells the manual if you need it.

[atech]

Re: Hp Designjet T770 error 79:04

After start up? Like it's about to go to ready then errors out?
Have you tried booting up with the ethernet cable unplugged? If you have, one of the things the service manual suggests is, performing a hard drive init.
Paul sells the manual if you need it.

Thanks a lot MBT, no need for manual, your suggestion is of great help. Now its asking for print head replacement.. The error is gone... you save my day,...