The printer might be reacting to a faulty fax line or network cable.
If the error persists after updates, a cold reset restores the printer to its factory state.
HP regularly releases firmware updates to fix bugs. If you recently updated the firmware (or never updated it), a version mismatch between the formatter and the engine controller can cause this error.
Internal hardware failure (specifically the formatter board or memory). Step 1: Perform a Deep Power Cycle (Hard Reset) 61.c4.d3 error
The internal communication software between the printer's logic board and the printing engine is failing. 🛑 Action Steps to Resolve 1. Perform a Hard Power Cycle
Open the cartridge access door and inspect the internal path. Look for any torn paper, labels, or foreign objects.
You will see a ribbed surface stretching from the front to the back. The printer might be reacting to a faulty
Follow these troubleshooting steps in order, moving from the most common software fixes to advanced hardware isolation. 1. Perform a Data-Clearing Power Cycle
A standard reboot may not clear the corrupted data cache causing the crash. A deep power cycle is required to flush the memory. Turn off the printer using the power button.
Network devices (routers, switches):
Wait at least 60 seconds to allow the internal capacitors to drain completely. Plug the power cable back in and restart the printer. 2. Inspect for Internal Obstructions Open the front and side access doors of the machine.
Before buying, try borrowing a formatter from an identical working printer to confirm the diagnosis.