ℹ
info HP
Status LED blinking green quickly
Printer processing configuration; no action required — wait for light to stabilize.
? What Causes This
Configuring parameters or initial checks after power on.
ⓘ What This Means
Wait until the light stops flickering, indicating stable operation.
Source: page 153 of the official manual
From the manual
This error code appears in:
HP Laserjet 1300 Printer