– “L10577” could be an internal Canon part number, service tag, or a label for a specific component (e.g., fuser assembly, power supply, or gear).
The is specifically the Power Supply Board (AC to DC converter) for a family of Canon LBP (Laser Beam Printer) engines. canon l10577
Since the printer relies on host-based processing, "Unable to send data" errors are frequently software-related rather than hardware failures. – “L10577” could be an internal Canon part