- HOW TO REPLACE THE MOTHERBOARD ON AN EPSON 3880 PRINTER HOW TO
- HOW TO REPLACE THE MOTHERBOARD ON AN EPSON 3880 PRINTER DRIVER
- HOW TO REPLACE THE MOTHERBOARD ON AN EPSON 3880 PRINTER MANUAL
- HOW TO REPLACE THE MOTHERBOARD ON AN EPSON 3880 PRINTER PRO
- HOW TO REPLACE THE MOTHERBOARD ON AN EPSON 3880 PRINTER CODE
If the latter, i think it writes-off the printer and obviously any time/money spend on the driver also wasted. An important thing is to know if it is a fault on the driver or in the print head. I'm looking to see if there is a D-S short but i dont think so. The circuit is near the connectors to the print head (underside, to right) so seems this is for the print head rather than a motor. It seems like this pair of MOSFETs drives a resonant circuit of an inductor (with writing R33L on top) and C226. Unfortunately the G, S terminals are underneath these devices so it isn't straightforward to trace and test. The fuse F1 does indeed connect to Q4 Drain. They seem to be driven by a proprietary Epson chip. The area of the circuit which it protects is a MOSFET output stage. You can see a better pic (following post, '7610 PCB 1_ann_r.jpg'), on the top of the part it looks like it has an 'F' not 'O' and it is open circuit.
You gave me a bit more enthusiasm to dig deeper and actually I have a much better picture now. A replacement PCB is £30, replacement equivalent printer is £150. This would mean I could see if it delays the appearance of the error (<1s), but maybe a bad idea? Other info - no visible problems on the PCB, not many components I can see that look testable or replaceable, e.g. I was thinking of using resettable PPTC fuses but i realise these take a few seconds to blow. I thought i'd try doubling ratings from 0.25A and seeing what happens. 0603 fuses seem to range from about 200mA to 6A.
I will then put a fuse in series with current shunt resistor so I can measure the current and see what happens. It is a huge PITA to assemble/disassemble with no way of being able to test it disassembled. like the print head! My plan is to put a pair of leads on the fuse terminals then reassemble the printer.
HOW TO REPLACE THE MOTHERBOARD ON AN EPSON 3880 PRINTER MANUAL
The service manual says for engineers to replace the main PCB, which would be pretty stupid if the cause of the fuse blowing was external, e.g. The fuse is really not designed to be replaced. Sure enough, there is an 0603 part on the main PCB labelled F1 which is open circuit - see pic.
HOW TO REPLACE THE MOTHERBOARD ON AN EPSON 3880 PRINTER CODE
In the service manual the error code is listed with the only possible reason being a fault on the main board: "Circuit error (include blowout of a fuse), possible cause Main Board failure". It developed the fault while printing and has had regular but not heavy use. It shows an error code immediately on startup before activating any motors etc. The printer is an Epson printer WF-7610, pretty large and complex beast, A3 size with ADF & Scanner.
HOW TO REPLACE THE MOTHERBOARD ON AN EPSON 3880 PRINTER HOW TO
I'm interested to know if anyone could guess what this fuse is protecting and/or has advice on how to approach replacing it and testing. I would like to keep my printer going, and if possible repair it myself.I have a fault which I believe is at least due to an SMD fuse blowing. Their final verdict was to take the printer to an authorized servicer for evaluation and repair, but that will be my last resource. I contacted Epson again over the phone, and applied a series of test including two power cleaning cycles, followed by nozzle check that showed broken lines on the Matte Black column and some black lines on the Yellow column. I even replaced the Light Black cartridge and the Maintenance Cartridge. These I ran twice and the issue was not resolved. If the nozzle check is almost 100%, leave the printer off overnight then do another cycle of cleaning and nozzle check the next day. Please uninstall and reinstall the ink cartridges (or the one recently replaced) and run three head cleaning cycles with a nozzle check in-between.
“This issue could be an indication of clogged nozzles of the printer. I then contacted Epson for support they sent me a set of instructions as follows: I went online and found your helpful video tutorial on “how to professionally clean your Epson 3800 & 3880 printers” I followed the instructions and allowed the cleaning solution sat on the printer overnight but the issue remained. About a month ago I was printing a set of photos that came out with black ink blotches and marks near the edge of the paper. Sometimes, I did not use it for several months.
HOW TO REPLACE THE MOTHERBOARD ON AN EPSON 3880 PRINTER PRO
My Epson Stylus pro 3880 is seven years old and lightly used.
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