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Error code reference

Samsung Multifunction Printer Error Code #02-003

Communication error of the MEGA88 Micom.

Samsung codesSamsung multifunction printer codes
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What the #02-003 error code actually means

Your Samsung printer has detected a communication problem with one of its internal control chips, which prevents it from operating normally. This is often triggered by something as simple as the side cover not being fully closed or a paper-handling component being out of position. Opening and firmly closing the side cover, and checking the envelope pressing device, is the recommended first step before assuming a more serious internal failure.

Diagnostic procedure

The full #02-003 procedure

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1
First diagnostic step
Open the side cover and close it. Check the envelope pressing device.
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Most common causes of #02-003

Ranked by how often they cause this code
  1. 1Side cover not fully closed or latched
  2. 2Envelope pressing device misaligned or improperly seated
  3. 3Faulty or dirty interlock switch on side cover
  4. 4Loose or damaged wiring harness to MEGA88 Micom
  5. 5Defective MEGA88 Micom or control board

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Questions people ask about #02-003

What does #02-003 mean on a Samsung multifunction_printer?
Error #02-003 indicates a communication error with the MEGA88 Micom, a microcontroller that manages communication between the printer's mechanical components and its main control board. The error signals that this communication link has been interrupted or has failed. The first recommended step is to open the side cover and close it firmly, then check the envelope pressing device for proper positioning.
Will resetting my Samsung printer clear the #02-003 error?
A simple power cycle or reset may temporarily clear the error display, but it will likely return if the underlying cause is not resolved. If the side cover interlock or envelope pressing device is the root cause, physically correcting that issue is necessary for the reset to hold. Persistent recurrence after resets points to a wiring, switch, or Micom hardware problem that requires hands-on diagnosis.
How much does it cost to repair a #02-003 error on a Samsung printer?
If the fix is simply reseating the side cover or repositioning the envelope pressing device, there is no parts cost involved. If the interlock switch needs replacement, parts and labor costs are typically in the range of $20 to $75. A defective control board or Micom component replacement is more involved and could range from $80 to $200 or more depending on part availability and labor rates.
How do I fix the #02-003 error on my Samsung printer?
Start by opening the side cover completely and closing it firmly to ensure the interlock switch registers it as fully shut. Next, inspect the envelope pressing device to confirm it is properly seated and not obstructed. If the error clears after these steps, the issue was likely a mechanical seating problem. If the error persists, further inspection of the wiring harness and interlock switch will be needed.
Is it safe to continue using my Samsung printer with a #02-003 error?
It is not recommended to continue operating the printer while this error is active, as the Micom communication failure means the printer cannot properly coordinate its mechanical functions. Attempting to print in this state could result in paper jams, incomplete operations, or further component stress. Resolve the error before resuming normal use.

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