!
error HP
Error Code Red LED Blinking
The machine has stopped due to an error and needs immediate action. Also indicates low toner.
? What Causes This
A major system malfunction or nearly depleted toner cartridge.
✓ How to Fix It
Unload jammed paper or replace the toner cartridge if problem persists, seek service assistance.
Source: page 27 of the official manual
From the manual
This error code appears in:
HP Samsung Scx 3200 Laser Multifunction Printer Series