Firmware and EEPROM data for the Canon PIXMA iX6870 A3 inkjet printer, provided in a RAR archive of about 6.1 MB. This sort of dump lets a repairer reprogram the main board flash when the printer will not initialise, shows persistent errors or has had a failed firmware update. Identify the memory chip on the logic board, check that its capacity matches the image, and make a full backup with your programmer before overwriting anything.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →