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What is the weight of the PH? 64gr it should have if well filled with ink. Both Lc and Lm stopped printing? Then I would replace the head. If not, I guess you might had messages popping up about pressure sensor misreading in the past. I would replace the PIP and calibrate.

I guess you have a problem with optimizer. Check the nozzle test, in the black rectangle you see the nozzle pattern of OP.

Check nozzle test print from ph cleaning menu. Could also be the lc-lm causing the issue. Or replace all overused heads in one strike saving way more money (time is money) then checking and replacing one after the other.

I guess the shutter is not opening. Maybe the lid of spectro is broken or the opening mechanism isn’t engaged properly.

You are right. This is strange. But in addition the explanation is not clear. I would like to know the carriage travel direction. Could also be linear encoder misreading or trailing cable issue. And I haven’t seen any pictures from HP IQ plot yet, where you can clearly see and determine.

If you still have this unstable fluctuating advance with deactivated omas you have a problem with the Rotary encoder on the drive roller.

Yes, this is possible. Omas can still provide good readings for few advances, later the machine might do some false compensations after misreading and deactivate the omas for rest of job. Just stick something onto Omas and start a printjob. You will immediately see if the advance behaves stable

Open the windows registry and search for „ink type“

Since several firmware versions it is included in baby latex.

A reinstall won’t fix this. Correct the ink type parameter in registry for the wrong slots.

This looks like an advance problem. You can check using the HP control print embedded in printquality menu. The left and rightmost thin lines should be thin. Deactivate Omas in substrate setting you are going to use. Or stick something on the sensor surface. Then do an advance calibration and...

I could recommend Fraser Inc. All the Arizona printer are using their system and it is working quite well.

Or the oiler felts are that dirty…

Is firmware actual? Try using manual alignment.

I had a similar case. For whatever reason uncured ink was smeared in the diverter of media entrance. The only way is to remove it remove the complete diverter and clean it.

Check information in main menu, tap on the information and it will prompt you the password. If not visible, customer has changed it.

Don’t unscrew the printhead frame. In addition these are T15 screws. Just the two T9 screws, snd maybe unclip the cables for better movement.

Seems to be a fujifilm aquity. The rfid board is the one (or two, depending on model) close to the ink bag ports. Older units hat a serial connection, newer have a ethernet cable connected to the data relay pca. Check if power is supplied to rfid pca and if the connections are good.

A hard toothbrush is better… Two T9 screws to loosen to get the pca of. Check that contacts are not stuck. Pay attention how you have removed the board and the correct positioning, because it requires feeling when putting it back in.

Depends on the issue. 99% of replacement are caused by broken mechanical parts. Mostly the handle breaks and the spectro can’t be opened. Several other cases are caused by malfunction of the opening mechanism located on left side just beside the printbed. It’s a plastic engager driven by a...