Epson ET-4750 Blank Pages After Cleaning: Do You Need to Reset or Replace the Maintenance Box Chip Before Power Cleaning?

Question: I watched your video about cleaning and resetting the Epson EcoTank ET-2750 waste ink tank pad counter. If I clean the maintenance box, do I also have to reset the chip? I have an Epson ET-4750 that I cleaned and unclogged, but it still only prints blank pages. I wanted to run a Power Cleaning, but the printer says the maintenance box needs to be changed. Any help would be appreciated, and I really enjoy your videos.

Answer: 

For the Epson ET-4750, cleaning the maintenance box physically and resetting the maintenance box status are two different things. The maintenance box has absorbent pads inside, but it also has a chip/counter system that tells the printer whether the box is usable, nearly full, or at the end of its service life. If the printer is asking for the maintenance box to be changed before it will allow Power Cleaning, simply washing or drying the pads will usually not be enough unless the chip or counter is also reset or replaced. In many Epson EcoTank models, including the ET-4750 series, the maintenance box is treated as a replaceable consumable. If the chip says the box is full, the printer may refuse to continue certain ink-consuming operations such as Power Cleaning because that process pushes a large amount of ink into the waste system. The most reliable fix is to install a new compatible maintenance box, often sold under Epson maintenance box part numbers such as T04D1/C13T04D100 depending on region and compatibility. Some third-party resetters or replacement chips may exist, but not all chips are resettable, and using an incorrect reset method can create more problems. If the printer displays a maintenance box replacement warning, maintenance box full warning, or similar end-of-service message, that issue must be cleared before Power Cleaning can proceed. However, the maintenance box message is probably not the main reason your printer is printing blank pages; it is more likely preventing the Power Cleaning function from running. Blank pages after cleaning and unclogging usually mean ink is still not reaching the printhead or the printhead is not firing correctly. Common causes include trapped air in the ink lines, clogged internal printhead channels, a dry or damaged printhead, a weak or failed pump/capping station that cannot pull ink through the head, ink starvation from the tank system, blocked vents, loose dampers, or an electrical problem such as a printhead cable issue or failed printhead driver circuit. Before running Power Cleaning, make sure all ink tanks have enough ink, the ink tank caps and vents are properly opened during printing, and the printer has not been repeatedly cleaned to the point where air has been introduced into the system. Print a nozzle check first. If the nozzle check is completely blank for all colors, that often points to a priming/ink delivery problem, a capping station/pump problem, or a printhead/electrical issue. If only one or two colors are missing, it is more likely a clog, air pocket, or individual ink channel problem. You can try one or two regular head cleanings, then let the printer rest for several hours because repeated cleanings back-to-back can overheat the head, waste ink, and fill the maintenance box quickly. If you already performed manual unclogging, be careful not to force too much fluid through the head because excess pressure can delaminate the printhead or damage internal seals. Also check whether the waste ink pump is actually moving ink into the maintenance box during cleaning; if the pump is not pulling, the printhead may remain unprimed even though the printer appears to complete a cleaning cycle. Once the maintenance box issue is resolved, Power Cleaning may help if the problem is air in the ink system or a partially starved printhead, but it will not fix a failed printhead, damaged cable, blown fuse on the mainboard, or a non-working pump assembly. Addressing printer issues can be complicated because many of these problems require hands-on testing rather than remote guessing. For that reason, we are not able to provide remote troubleshooting, step-by-step repair guidance, or personalized repair support for every printer case. We do offer an in-person evaluation and repair service through our local diagnostic facility, BCH Technologies Printer Repair Service [https://bchtechnologies.com/printer-repair-service]. Because demand is high, we operate on a first-come, first-served basis, so it may take a few weeks before we can accept your printer for drop-off. Our service is structured to repair either the whole printer or specific parts, with instructions provided on how to proceed. We also understand that our rates may not be the most economical option for everyone, so we strongly recommend self-help research whenever possible. A good place to start is YouTube or our channel homepage, BCH Technologies YouTube Channel [https://youtube.com/@bchtechnologies]. Use the search icon next to "About" on the right-hand side of the menu bar to search for specific topics such as Epson ET-4750 blank pages, Epson EcoTank maintenance box, Epson Power Cleaning, Epson printhead clog, or Epson no ink flow. I receive dozens of questions every day asking where to find videos on specific topics, and after making videos for many years, it is difficult to remember every exact video, so YouTube's search function is usually the fastest way to find the most relevant repair examples. YouTube may also suggest helpful videos from other creators that can give you additional repair ideas. Thanks again for your support and for the kind words about the videos. In your case, I would first resolve the maintenance box replacement or reset issue so the printer will allow service functions again, then diagnose whether the blank pages are caused by ink starvation, air in the lines, a clogged printhead, a failed pump/capping station, or an electrical printhead problem before assuming Power Cleaning alone will solve it.