info HP

Status Blue light pulses at the center, grows outward, and then shrinks back in, repeating

The printer is trying to connect to a Wi-Fi network.

? What Causes This

Normal operation during Wi-Fi connection attempt.

What This Means

No action required. Wait for connection to complete.

Source: page 8 of the official manual

From the manual

Manual page 8 — HP error Blue light pulses at the center, grows outward, and then shrinks back in, repeating

This error code appears in:

HP Smart Tank 7600 Printer