401C5652dn

OKI C5652dn error 401: RAM memory failure

The OKI C5652dn error 401 indicates that the printer detects an irregularity in the installed RAM module. This error is common when the machine has suffered abrupt power cuts or when the additional memory module is not correctly seated in its slot. Memory stability is essential for processing complex color print jobs.

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Common causes

  • 1Loose RAM module or oxidized contacts.
  • 2Power cut during data processing.
  • 3Defective RAM memory component.
  • 4Incompatible expanded memory installed.

Solutions

Quick Diagnosis

If you see the OKI C5652dn error 401 on the panel after turning on the machine, it is likely that the mainboard is not recognizing the total memory capacity.

Step-by-Step Solution

  1. Turn off the printer and remove the power cord.
  2. Access the RAM slot (under the side cover).
  3. Remove the module, clean the contacts with a soft eraser, and reinsert it.
  4. Turn on the unit to check if the error disappears.

Prevention and Maintenance

Avoid forced shutdown via the power cable; always use the front power button. Use a UPS to protect the memory against voltage fluctuations.

When to Call a Technician

If after reinstalling the module the printer continues to throw the code, the RAM module might be fried and require immediate replacement.

Device Technical Data

  • Technology: Digital color LED.
  • Speed: 26 ppm (color).
  • Compatible Consumable: C5650 toner series.
  • Recommended Use: Small workgroups.
  • Official Drivers / firmware
OKI C5652dn error 401: RAM memory failure | Vimazdev