T2500 "printhead replacement not complete"

[Kiran Otter]

Re: T2500 "printhead replacement not complete"

I did not do the "incremental purge".

Why not??

Kiran

[pbrooks259]

Re: T2500 "printhead replacement not complete"

I feel kind of bad. Because the manual states for "incremental purge":

The used printhead needs to be installed in the printer, but it is not going to be recovered by this service test if it has been already rejected by the printer.

All the lines were full of ink. I did not see the usefulness of the incremental purge since I would have to have a "used" printhead installed, not the new one. The new one has not been totally filled with ink.

I guess maybe I am missing something here.

So now I have "replace printhead". I assume I need to get a new printhead, but I would expect the exact same thing to happen again.

[pbrooks259]

Re: T2500 "printhead replacement not complete"

I tried "incremental purge". I THINK it stated "working pen detected". It started the purge. I did get "some" PK? (whatever the hell which one is at the far right position as you face the printer) whereas there was "zero" PK? ink before. It filled it ABOUT 5-10% plus or minus. It did something. But ultimately failed. I'll try it again. Perhaps it will incrementally fill it more. Don't know. Not sure what the hell to do from this point forward. I will keep trying to fill it with ink.

I am using a lot of ink. I keep seeing air enter the yellow ink tube. Tentatively, I THINK I have at least a bad yellow tube; maybe sucking air in at printhead end; I saw stretches of air more towards the ISS end. ....passed leakage test at least twice earlier, but probably does not necessarily mean anything.

[pbrooks259]

Re: T2500 "printhead replacement not complete"

Seems I also have leaky tubes: yellow, magenta, and some? in cyan (have seen in cyan too). Got 24:10 error possible leakage for magenta, whereas before 2-3 times leakage test had passed. So I assume I need to replace the ink tubes assy. which includes the trailing cable.

With the new primer assy. I was seemingly able to get more ink to the printhead via "incremental purge" but still failed. The old upper primer was not seemingly reaching a pressure point and relieving pressure. The new one would seemingly reach a certain pressure and relieve pressure at that point. However, finally got magenta to the printhead and I THINK Gray and/or PK. I THINK I am losing too much pressure with all the leakage so have been unable to fill the printhead. Air pockets keep showing up in yellow and magenta and cyan, all the colors. I have seen none in shades of black but hard as hell for me to see.

At least the printhead so far is noted as "working pen detected". Shows up as: status = OK, error = 0x80000, not sure what this means yet.

Sorry I didn't try the "incremental purge" sooner. I got confused on the mention of inserting "used" printhead, but I could have inserted the "new" unfilled printhead which I subsequently did. But still failed to initialize or whatever. So I am still at "printhead replacement not completed".

[Massimo Italy]

Re: T2500 "printhead replacement not complete"

Seems I also have leaky tubes: yellow, magenta, and some? in cyan (have seen in cyan too). Got 24:10 error possible leakage for magenta, whereas before 2-3 times leakage test had passed. So I assume I need to replace the ink tubes assy. which includes the trailing cable.

usually the tubes leak ink when they have problems, you have an air intake which is a different condition.
Is there air near the ink tanks? in this case, the seal of the connection between the cartridge and the seat is probably not optimal

Was this plotter in use at a printing service center? then it would explain a wear of these components, as it has 7 years of service.

[pbrooks259]

Re: T2500 "printhead replacement not complete"

I saw a lot of air over on the right end as you face the printer several inches from the right ISS--especially yellow but also magenta--the cyan, magenta, and yellow ISS end. (I had not had the right end cover off till yesterday, so I could see air in those lines on the right end yesterday.) It was in use at a construction general contractor's office. Yes, it is 7 years old.

Does the inability to fill the printhead now make more sense with the air infiltration to the ink tubes? I assume so, but maybe not. I assume the pressure leakage at the right ISS does not allow the IDS to build up pressure to fill the head but I'm still not 100% sure on this. I have seen a tiny bit very little cyan ink leakage in the right ISS. ....I thought I would see some 93.xx.xx system warnings, but have seen none in the "service plot".

Has anyone else had this happen?: Inability to fill the printhead due to tubes leakage, sucking air in. I assume someone has.

I am looking to order an ink tubes assembly. It comes with a new printhead. However, can I install a new ink tubes assembly and try to reuse this "new" "partially filled" printhead that I presently have? I assume I "have to" install a brand new un-filled printhead when I install a new ink tubes assembly but am not certain about this. ....I'll see what the manual says too.

I would really like to make use of this present "new" "partially filled" printhead but perhaps I am SOL on that now due to ink tubes assembly replacement needed. ....Can I use "incremental purge" to install a new ink tubes assembly along with the present "new" "partially filled" printhead?

[Massimo Italy]

Re: T2500 "printhead replacement not complete"

I would really like to make use of this present "new" "partially filled" printhead but perhaps I am SOL on that now due to ink tubes assembly replacement needed. ....Can I use "incremental purge" to install a new ink tubes assembly along with the present "new" "partially filled" printhead?

From the manual....
----------------------------
Purge Tubes
NOTE: Make sure that NEW Ink Cartridges are installed or that the ink volume remaining in the Ink
cartridges is above 60cc before starting to fill the tubes. If you do not comply, you will get a warning message
and the printer will force you to replace the cartridges.
NOTE: Before using the Purge Tubes utility, you must make sure you have a new printhead.
Perform the Purge Tubes utility as follows:
1. In the Service Utilities submenu, scroll to Purge Tubes and select it.
2. The printer reboots.
3. After a time, a cartridge replacement screen appears.
4. Insert all cartridges and press OK.
5. If any of the cartridges have insufficient ink, the cartridge replacement will not allow you to leave until
they have all been purged. You have to replace cartridges that are not valid, and press OK again.
6. When the cartridge replacement process has successfully completed, a printhead replacement will be
opened.
7. The Front panel will prompt you to install a new printhead. Please follow the instructions.
8. The Front Panel prompts you to confirm that the printhead is replaced with a correctly inserted new
one. If it’s correctly inserted, press OK.
9. The product will now perform the Printhead Alignment and Front Panel will prompt you to continue with
the Printhead Alignment, select Align now and press the OK key.
10. Once the Printhead Alignment is completed, the following message will be displayed on the Front Panel.
Press the OK key to continue.
---------------------------------------------

if you change the tubes the procedure is this ...
and is expected to have a new head end maybe new ink cartridge.

other maneuvers I do not know what results they will have.
did you manage to check the tightness of the pipes, did you find the point where they leak or suck in air?

perhaps, and I mean PERHAPS, if you fill the new tubes by hand (with the syringe by aspirating) or repair the current ones you will be able to try to fill the current head again with the procedure you performed yesterday.
I don't know if it will work to the limit you will do the filling with the normal procedure.
of course you will consume a lot of ink to do all this, which is why I previously suggested buying compatible cartridges.

also we are not yet certain that the drop sensor works properly.

[pbrooks259]

Re: T2500 "printhead replacement not complete"

Most air in the lines are in yellow and magenta lines several inches from the R cyan, magenta, yellow ISS. So I assume air is being sucked in around the seals between the Right ISS and the yellow and magenta ink cartridges, and possibly cyan. There are small pockets of air at the carriage end of the tubes, but perhaps they work there way from the ISS up to the carriage. Or perhaps the tubes assembly is worn out at both ends and air is getting in at the carriage ends of the tubes as well. But again I do not see any air in the MK, G, and PK tubes, but again it is hard for me to detect air in those tubes. There is evidence of a very small amount of cyan leakage at the Right ISS. That is the only ink spillage I see. ....I should "bite the bullet" and go ahead and install a new printhead and be done with this; it comes in an ink tubes assembly. Perhaps I can make use of the present "new" "partially filled" printhead at some point.

Yes, I have thought about the drop detector DD not working. But I assume calibration could fail because there are no ink droplets with which to calibrate it. As you suggested earlier; maybe I should go ahead and replace only the DD just in case.

[Massimo Italy]

Re: T2500 "printhead replacement not complete"

if the leak is at the base of the cartridges, consider that the air may have also entered inside.
difficult to verify.
but if that's the case it's not good,
normally they are vacuum bags.
some models have an air vent to compensate, but it seems to me that this is not the case for this model.
you can see if there are 2 contact sockets at the base of the cartridge

[pbrooks259]

Re: T2500 "printhead replacement not complete"

Thanks, I have heard of air getting into the cartridges as well. I should probably not reuse the present yellow, magenta, and even cyan ink cartridges. I have new cyan and yellow ink cartridges on the way. I will get another magenta ink cartridge.

[pbrooks259]

Re: T2500 "printhead replacement not complete"

FWIW, I MAY not have needed to replace the primer assembly, but again 1 thing I noticed: The old former upper primer did not seem to trigger a pressure relief valve after it would build up pressure. The replacement new upper primer did do this--relieved pressure. At least it seemed to do this. Not sure what impact this had on performance. I tried to deduce that since magenta, PK, and gray were missing at the printhead nozzles that then something must be awry with the upper primer since it primes magenta, PK, gray, and cyan. Again, I have a replacement ink tubes assembly on order--these things CAN BE pricey! Up around $1000!

Thanks for your input! It does not go unnoticed. Greatly, tremendously, appreciated!

[pbrooks259]

Re: T2500 "printhead replacement not complete"

I am wondering about the role of the ISSs. However, they pass tests but so did the leakage test at first but then later failed for magenta.

And I am wondering as was mentioned about the drop detector sensor DDS. But I am thinking that the DDS is irrelevant until I get the printhead replacement completed, right? As presently there is no working printhead from which to detect ink droplets.

[Massimo Italy]

Re: T2500 "printhead replacement not complete"

But was the leak test ok when the old priming motor was still fitted?

Certainly the drop sensor cannot detect anything if the ink does not come out of the head, the only test would be to mount it on a working plotter to verify its operation.
As you say probably even if the drop detector does not work the printhead should still load the ink, but in the end it will check the drops and if it does not detect them we will know that it does not work.
Also my impression is that it works.

[pbrooks259]

Re: T2500 "printhead replacement not complete"

Yes, the leak test was OK with the old primer assembly. So maybe there was something related to the old primer. It failed with the new primer assembly with a 24:10 error for magenta, the ink cartridge whose content was noticeably underreported.

Still awaiting new ink tubes assembly.

[Massimo Italy]

Re: T2500 "printhead replacement not complete"

personally when the tubes have problems I have always found physical breaks near the terminals, with ink leaks. in your case it is evident that there is a leak but difficult to locate, perhaps in the connection valves of the cartridges, or some micro cracks in the connection of the tubes in the terminals.

I say this because it is always interesting to understand what actually does not work, otherwise we would be simple spare parts exchangers.