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System Error #02-003

System error #02-003 — Internal communication error

Samsung · Laser Printers

What does System Error #02-003 mean?

An internal communication error has occurred, specifically with the MEGA88 Micom (microcontroller), or possibly related to the envelope pressing device.

Common Causes

  • Communication error of the MEGA88 Micom.
  • Issue with the envelope pressing device.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Open the side cover of the printer.

  2. 2

    Close the side cover securely, ensuring it's latched.

  3. 3

    Turn off the printer, wait a few seconds, then turn it back on.

  4. 4

    Check if the envelope pressing device (if applicable) is properly seated or clear of obstructions.

Browse all codes in this manual (57)
Verified technical data. Last updated: April 2026

Related Faults

Abnormal PrintingAbnormal printing — Strange characters or no outputAbnormal noise (scanner)Abnormal noise — Scanner making unusual soundsCover openCover open — Printer indicates a cover is not closed
Source: Samsung Laser Printers
Open Manual (Page 113)Search more codes in this manual