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Hello, anyone know hot to code for arduino nano in my case? I need somebody to write me thermostat arduino program. The chinese thermostats are too big, not have basic features that i need. Pm me your price, terms etc. I will provide description what i need. Thermostat has to have heating...

Well the brother heads do not use cleaners with alcohol, because of glue used. There are no inlets like canon or epson on brother printers. Hard to explain. Do not try to buy printheads from aliexpress because i bought 2 and both were defective, then had to buy original one cos is like 2x more...

Agreed, they should have set price to 0

Buying used printer almost every time is buying junk, except maybe laser printers

Its hard to clean brother print heads because they use membrane type ink damper on top of actual print head. The membrane can unglue an ruin the print head.

It depends where you live, if there is no local availability going to another city is not an option for most users

You mean function that asks to feed a piece of paper then cleans rollers? This never worked on any printer

If paper roller was causing this then different size paper would show problem in different area. Now this is not the case.

I have seen sutch similar problem on brother mfc 5895 a3 size printer. Text was blurry over all page, was solved by using unidirectional mode.

If you buy over internet then ask for nozzle check

This paper jam error https://support.usa.canon.com/kb/index?page=content&id=ART152961

If the printer throws errors regarding purge unit on display or pc, then its the purge unit. So you disassembled purge unit pump it has gears, you did not mark with marker, and did not make photos?

Just use hair spray before printing, afterwards you can add another coat, this can work or not depending on ink.

If no service manual is available, then its harder sure, ta a lot of photos. But you still need donor printer to take mechanics from and cheap.

Hard to say how to match the gears, did you have to teardown pump itself? Usually it self cleans if add cleaning liquid to tubes. I only wash outside remove motor if needed.

You can take purge unit out, clean it washing in the sink, then relube with silicone water plumbing type lubricant it should work fine. The replacement is needed if rubber pads are damaged, not making proper seal and print head dries up quickly, or print head wiper is bad.

If cleaning, greasing does not help, the only way to solve is to get another printer and change swap parts.

If the drum is on separate cart then it has its own cleaning blades and rollers of various kinds, these problems usually are not possible to resolve easily if second known good part is not available and you take risk for swapping parts like rollers etc. With old printers you must have at least 2...

I needed the wiring flat cable to print head, dampers, but the client decided to scrape the printer.

The purge unit is QM2-2925-000 like you said, but I cant find any new available on 2 major EU distributors and aliexpress also found nothing. Your best bet is to find another printer and take it for parts.