Brother QL-810W Ultra-Fast Label Printer with Wireless Networking - Manual (Page 191)

Troubleshooting
181
17
(Once for 2 seconds)
End of DK Roll
Feed error
Transmission error
Database search error
Access point search error
Access point connection error
Security error
No template selected
The DK Roll Compartment Cover is opened while the Label Printer is in use.
No media error
Incorrect media error
Communication command error
Two-color media high resolution printing error
(Twice for 2 seconds)
Cutter error
Mass storage error
System error
Status LED Condition