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‎09-26-2018 07:02 AM

HP Recommended
Product: HP DesignJet T770
Operating System: Microsoft Windows 7 (64-bit)

Our DesignJet T770 started having some 21:13 errors (service module related, requesting a restart) a few days ago. Switching off via button at the panel did not work. It simply did not react. We pulled the plug, waited the usual 10-20 seconds and put the plug in the socket again. The printer started up fine, but the error popped up at least once a day.

Today in the morning we shut the printer down, waited, powered it on and it got stuck during the initialisation phase (sand clock stopped rotating). After 10 minutes without any noticable change we decided to shut it down and have some internet search.

 

service station looks fine and operational, all internal plugs seem to be connected (expected loose connectors from vibrations)

decoder stripe is clean (hint from the hp support hotline)

sledge is being held in place when i try it moving while powered, and moves easily when unpowered

 

i found some manuals to reset the nvram (which help in some cases) of other hp printers, but sadly not for the t770. Can anyone help me out here?

 

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