Help

[Jim Hancock]

You have an electronic issue on the black channel (not the black head itself), this is not a printhead issue. It could be the carriage board, but more likely the mainboard. Did you verify the ribbon cable I pointed to is in straight? As always, with the printer unplugged for 15 minutes, verify both of those big ribbons are OK by pulling them out of their connectors, check the traces and carefully plug them back in. You can also put the head cables back in their proper locations, as we have verified this is a black channel signal issue. Then do another nozzle test and post the results.

 

[Jim Hancock]

So these results are clear to you, what you have done is to drive the K/C head with the M/Y signals and the M/Y head with the K/C signals. Since the problem moved, it's a black channel signal issue, not an issue with the head itself.

 

[Lightbulb88]

Gotcha

 

[Lightbulb88]

After power down and removing of the large ribbons, and putting the printhead ribbons back into place. The machine did a cleaning and afterwards I did a test print. Nothing printed, all colors gone.

 

[Jim Hancock]

Recheck the seating of the cables. Also, do a medium cleaning to make sure the heads aren't dried up...

 

[netsol]

i have not been following this one.
did we check very carefully that there is no (conductive) ink on the board(s) the ribbon cables, etc

everything should be very clean.

 

[Lightbulb88]

Recheck the seating of the cables. Also, do a medium cleaning to make sure the heads aren't dried up...

To do the medium clean, do I have to go in service mode? If so, I was locked out and the code sequence I w once used is not working for me now! I get a message the the service mode is protected. How do I get passed the service mode protection?

 

[Lightbulb88]

i have not been following this one.
did we check very carefully that there is no (conductive) ink on the board(s) the ribbon cables, etc

everything should be very clean.

Netsol, I will check this as well. Thank you...

To do the medium clean, do I have to go in service mode? If so, I was locked out and the code sequence I w once used is not working for me now! I get a message the the service mode is protected. How do I get passed the service mode protection?

Thank you, Jim!

 

[Jim Hancock]

Medium cleaning should be in the head cleaning menu in user mode. Here's the user manual, if you don't have one.