394B4550
Fix OKI B4550 Error 394: Print Spooler Fail
The OKI B4550 error 394 is caused by a communication gap between the Windows print spooler and the printer's internal memory. When print jobs become corrupted or stuck, the printer issues this code. Follow this guide to purge stuck jobs and resume printing.
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Common causes
- 1Corrupted Windows Print Spooler.
- 2Stuck print jobs in the system cache.
- 3Driver/software communication timeout.
- 4Temporary system folder errors.
Solutions
Quick Diagnosis
If your computer reports error 394, your Windows Print Spooler is likely locked by a corrupted document. Restarting the spooler is the fastest solution.Step-by-Step Solution
- Restart Spooler: Reset the service in Windows.
- Clear Temp Files: Delete the cached print files in the system folder.
- Reboot: Power cycle both units.
- Verify: Test with a small document.
Prevention and Maintenance
Do not queue massive document batches to prevent spooler hang-ups. Maintain your system drive's free space. Use official supplies to ensure reliable job handling.When to Call a Technician
If the service fails every time you attempt to print, consider a clean re-installation of your OS or printer driver suite.Ficha técnica del equipo
- Technology: LED Printer
- Speed: 28 ppm
- Connectivity: USB/Parallel
- Memory: 32 MB
- Compatible Consumable: B4550 series
- Recommended Use: Office
- Official Drivers/Firmware
Steps to follow
- 1
Restart Spooler
Go to Windows Services, stop the Print Spooler, and restart it.
- 2
Clear Temp Files
Delete all files in the system's spool folder to clear stuck jobs.
- 3
Reboot
Power cycle both the computer and the B4550 printer.
Frequently asked questions
This error means the computer's print spooling software is out of sync.
Often yes, or the temporary print spooler file has become corrupted.
No, it's a software/system configuration issue.
Through Windows services and the local printer spool folder.