727 printheads

[styloid]

I have several printheads with very low usage which fail in the same way 

I'd like to repair them but don't understand the reason they are failing.

I have 5 of them going in exactly the same way at the same point.

This is what happens

The printer accepts the printhead.

The printer starts prepairing the printhead.

When it get about 3 mins in the process , and shows its 27% through the process at 

5m 15 secs to go  to jumps to 100% done, then says failed.

I'm thinking one of the elements in the head is detected as failing.

I'd really like to get past this as it's about  $2000 worth of heads.

What happening at this stage at 27% which is triggering a failure.

Thanks

Peter m

[D Hook]

I'm guessing you know this already but:

1.  Paper has to be loaded.

2.  Printer checks to see if there's enough ink to continue and to print an alignment page.  If there isn't enough ink, it should alert you to that.

3.  Further information can be obtained from the error log. System Errors for the printhead are not explicitly shown in the Front Panel. This can give information about a failure in the printhead, if the printhead is missing, or if the wrong part is being used (T120&T520 printhead).

You don't say which model of printer your using but  I hope you can get this sorted because those are some pricey printheads.  Do you have a service manual?  Are there any other error messages shown on the front panel?

[styloid]

Thanks for your suggestion. 

Some heads work so I think everything is OK.