392B4550

Fix OKI B4550 Error 392: Memory Overflow

The OKI B4550 error 392 is a clear signal that the device's memory has reached capacity while trying to interpret a print request. Complex graphics or oversized files often trigger this overflow. This article helps you manage print queues to prevent the error.

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Common causes

1Buffer overflow due to heavy graphics.
2Driver/firmware version mismatch.
3Insufficient base RAM for the document type.
4Hardware memory module failure.

Solutions

Quick Diagnosis

If you see error 392 repeatedly, check if the files being sent have high-resolution images. This error is almost always caused by a memory buffer limit.

Step-by-Step Solution

Clear queue: Delete all pending print jobs.
Power cycle: Completely power off and unplug the unit.
Lower resolution: Set print quality settings in the driver to 300 dpi.
Test: Send the document again in smaller segments.

Prevention and Maintenance

Always keep the printer firmware up to date. Avoid queueing numerous documents at once. Use original supplies to keep performance consistent.

When to Call a Technician

If small documents also trigger the error, there is likely a permanent fault in the memory hardware.

Ficha técnica del equipo

Technology: Monochrome LED
Speed: 28 ppm
Connectivity: USB 2.0, Parallel
Memory: 32 MB Base
Compatible Consumable: B4550 Cartridge
Recommended Use: Home office
Official Drivers/Firmware

Steps to follow

1
Clear queue
Remove all pending jobs from the Windows printer spooler.
2
Power cycle
Unplug the printer for a minute to clear the RAM cache.
3
Lower resolution
Set print resolution to 300 dpi to reduce processing load.

Frequently asked questions

This code means the print job is too complex for the current memory capacity.

Yes, but standard troubleshooting usually resolves this without extra hardware.

Genuine toners are recommended to ensure printer stability.

Try printing in smaller batches rather than one massive document.