HP R2000 Heads losing nozzles

[bosdub]

I'm having an issue with the printheads losing nozzles. I am pretty sure there is an issue with the water delivery system although all of the diagnostics check out ok. I have done the purge water system routine, and when it purges there is a fair amount of water on the cleaning cloth, but when I click "dispense" there is almost nothing. The nozzle that shoots the water is relatively new, and we have had the change over to the new water tank and system.
Any thoughts?

 

[balstestrat]

Check condition of every blade, check if you still have old water pump with a filter, it can clog. Check how the nozzle plate looks like, maybe the issue is elsewhere.

 

[bosdub]

Blades all recently replaced and calibrated including the "orange" blade.
We had already by passed the water filter when it clogged, but since then a tech installed the "new" water tank system. I would assume that included a new pump?

Nozzle plate? I assume you mean the nozzle check print? It looks terrible in certain areas. Although the areas that look terrible change so that kinda ruled out any individual heads in my mind. Today magenta is terrible, Friday it was optimizer.

The first prints of the work day always seem to look ok and then it goes down hill after a few prints.

 

[balstestrat]

No I mean like taking the printhead out and checking the actual nozzle plate and how it looks. It could tell if you have crusting and that would explain the water issues.

You can order only the tank, pump or both in a kit so can't really say what was replaced without actually knowing.

If nothing else, diagnosing that the drop detector is working as intended.

Even then quite a few other options to consider.

 

[bosdub]

I can do that but I have run the carriage over to the IDS side of the machine and the nozzles don't seem to be crusted. The other thing that keeps me from thinking PH problem is that the issue moves from one ink to another.

HP ordered us the water replacement kit as a warranty item so I am not real sure about the parts. There were a few boxes.

I will run the drop detection diagnostics and see if there are any issues there. My guess is that it is working.

 

[bosdub]

Drop Detector Diagnostics 52001 and 52002 both pass completely.

 

[bosdub]

It would be great to have the service manual for this machine but I haven't had any luck finding one online.

 

[balstestrat]

I think this is something where running diagnostics won't necessarily get you anywhere but someone with knowledge might solve it quickly.

Service manual won't help you much on this sort of issue. And even with that without training you won't have full access to diagnostics.

 

[cornholio]

Could be a faulty web wipe. A customer of mine once installed a L1500 web wipe into a R1000... gave him similar problems.

 

[greysquirrel]

It would be great to have the service manual for this machine but I haven't had any luck finding one online.

only way to get a service manual is to go the Alpharetta and take service training. as far as I know

 

[ToTo]

First of all when dispensing it must show a line of water covering the whole printhead width. If not there might be a kinked tube, pump or valve defective or the jet is dirty. With the new blue tubes the inline water filter has been removed.
Check also the leftmost spittoon. I’ve seen a huge buildup of ink there.
Can you send a picture of cleaning web during printing? Just to see what is wiped and what not. And verify physically the amount of ink in the Intermediate tank!