LSU error [zzz] — Laser Scanning Unit malfunction

What does LSU error [zzz] mean?

The Laser Scanning Unit (LSU), which directs the laser to create the image on the drum, has detected an internal error. This might be due to motor issues or problems with laser detection.

• LSU motor does not operate correctly
• Laser beam detect signal is not occurring or is irregular

Click steps to track your progress.

1. 1

   Turn the printer completely off, wait 30 seconds, then turn it back on.

2. 2

   Listen carefully for any unusual noises coming from the printer during startup; this could indicate a motor problem.

3. 3

   If the error reappears after these steps, contact service for further diagnosis.