Fix Samsung Error LSU Error: Laser Scanner Unit Error

critical Severity: critical

If your Samsung printer is displaying error LSU Error, do not worry – this is a known issue with a proven fix. This error typically indicates laser scanner unit error that can usually be resolved without a service call. Follow the steps below to clear this error.

What Causes Samsung Error LSU Error?

This error can be triggered by one or more of the following issues:

Laser scanner unit motor failure
Laser diode malfunction
LSU polygon mirror dirty
LSU cable disconnection

How to Fix Samsung Error LSU Error

Follow these steps in order. After each step, check whether the error has cleared before proceeding to the next one.

Step 1: Power cycle the printer
Step 2: Listen for the LSU motor spinning during startup — silence indicates failure
Step 3: Open the printer and check for visible obstructions near the LSU
Step 4: If the motor is not spinning, the LSU unit needs replacement
Step 5: Contact HP support for Samsung printer service

Affected Samsung Printer Models

The following Samsung printer models are known to display error LSU Error:

Related Samsung Error Codes

If you are troubleshooting error LSU Error, these related error codes may also be relevant:

Frequently Asked Questions

What is Samsung LSU Error?

LSU Error indicates the Laser Scanner Unit has failed. This component spins a mirror to direct the laser beam across the drum surface.

Can I fix an LSU error myself?

LSU failures typically require professional repair. The laser scanner unit is a sealed component. Power cycling may clear a temporary error, but persistent LSU errors need service.

Error still not resolved?

If the steps above did not fix the error, the issue may require professional service. Contact the manufacturer support line or visit an authorized service center near you.

Samsung Error LSU Error Fix – Laser Scanner Unit Error | TroubleshootMyPrinter