HP designjet l65500 Manuale Di Servizio

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If not, perform again the Printhead cleaning roller. The details of the static wipe are described below: 
Functionality Check 
Restart the printer in diagnostic boot mode and perform the following tests: 
7.1 Printhead Roll Adv Open Loop, include the test of the Electromechanical break. 
7.2 Printhead Roll Adv Close Loop, to test the advance of the Printhead cleaning material 
7.4 Printhead Roll Eng Close Loop, to test the engage movement (up/down movement of the 
Printhead cleaning roller). 
in case of intermittent failure of the Printhead cleaning roller check that the greasing is 
correctly applied (up/down movement, too much friction). 
In this case of intermittent movement failure of the Printhead cleaning roller, a greasing of the Printhead 
cleaning roller is recommended. 
Here are the different items to grease (removal of the Printhead cleaning roller is required, printer has to 
be switched off first.  
The  grease  to  use  should  be  compatible  with  plastic  and  metal,  as  in  Molicote  44.  In  case  of 
 any  doubt,  order  the  support  part  ‘Q6702-67013 Grease kit for the PH cleaning roller’.  
What to do before replacing a printhead
If the printhead is experiencing a one time fault, use the following procedure to troubleshoot the error 
before replacing it.