Need Help Jet health and poor print quality after moving HP FB750 to new location

[Andrew Hodgson]

We moved warehouses and unfortunately our HP FB750 was left unused and unplugged for ~1.5 months until we could set up the printer at it's new location. Have the printer up and running but getting horrible print quality. Currently I have done the following
- Cleaned several parts of the printer (print head, encorder strip, etc)
- Purge and fill print heads
- Manual Bidi and X Registration Calibration

I am wondering what else I can do before calling HP support. Should I try purging the lines more or trying a different box of ink?

 

[Peter Martins]

Not worked on this model yet. But we both our printheads is cold water in an ultrasonic tank.
Ours has a veritable power facility.
Start on low power for a minute. Test. If no improvement maybe longer or more power.
I don't like full power as the heads have ceramic parts which might crack if to strong a vibration.

Do this at your own risk. It works for us sometimes

 

[FrankW]

Check the vacuum pressure.

Do you have any head cleaning liquid? Do you knkw how to clean the heads manually?

If manual cleaning wont help, wet a linth-free tissue with head cleaning liquid and tape that tissue below the heads for several hours.

 

[Andrew Hodgson]

Check the vacuum pressure.

Do you have any head cleaning liquid? Do you knkw how to clean the heads manually?

If manual cleaning wont help, wet a linth-free tissue with head cleaning liquid and tape that tissue below the heads for several hours.

How do you check the vacuum pressure? I also do not know how to manually cleaning the heads. I have cleaned the print heads through the maintenance setting where you wipe the print heads with the print head flush. I am not sure if that is what you're mentioning.

I can try taping lint-free tissue to the print head.

 

[FrankW]

Yes, wiping the head with print head flush (with a tissue on the fingers) is what I have meant.

Need to check myself were to check the pressure. On the back of the machine is an adjustment screw.