HP printers are known for their efficiency and reliability, but even the best devices can encounter errors. One of the most common issues is the HP Printer Error 79, which typically displays as: “79 Service Error. Turn off then on.”
This error can disrupt your workflow, leaving you unable to print documents. It is usually caused by firmware glitches, corrupted print jobs, or network-related problems. In this guide, we will explore the causes of the error, methods to fix it, and preventive measures to avoid it in the future.
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What Is HP Printer Error 79?
The 79 Service Error is a firmware-related issue that can affect a wide range of HP printers, especially models from the LaserJet series. This error prevents the printer from functioning and may freeze or reboot it repeatedly.
The error occurs when the printer encounters a problem with processing print jobs, interacting with the network, or handling software conflicts.
Common Causes of HP Printer Error 79
- Corrupted Print Jobs
Malformed or corrupted print jobs can overload the printer’s processing capabilities, causing it to freeze or display the error. - Outdated Firmware
Using outdated firmware can lead to compatibility issues and operational glitches. - Third-Party Software or Plugins
Third-party applications or incompatible plugins can interfere with the printer’s performance. - Network Problems
A network-related issue, such as IP conflicts or incompatible print server configurations, may trigger the error. - Hardware Malfunctions
Problems with optional accessories like DIMMs (Dual Inline Memory Modules) or additional paper trays can lead to this error.
How to Fix HP Printer Error 79
Follow these step-by-step instructions to resolve the HP Printer Error 79 and restore your printer to working condition.
Step 1: Power Cycle the Printer
Restarting the printer is often the quickest way to resolve the 79 Service Error.
- Turn Off the Printer: Press the power button or unplug it from the power source.
- Wait for 30 Seconds: Allow the printer to cool down and reset its internal processes.
- Turn It Back On: Reconnect the printer to the power source and power it on.
Check if the error persists. If it does, proceed to the next steps.
Step 2: Clear the Print Queue
A corrupted print job may cause the error. Clearing the print queue can resolve this issue.
- Cancel Print Jobs on Windows:
- Open the Control Panel and navigate to Devices and Printers.
- Right-click your printer and select See what’s printing.
- Cancel all pending print jobs.
- Cancel Print Jobs on Mac:
- Open System Preferences and go to Printers & Scanners.
- Select your printer and click Open Print Queue.
- Remove all jobs in the queue.
- Restart the printer after clearing the print queue.
Step 3: Update Printer Firmware
Firmware updates can fix bugs and improve the printer’s performance.
- Download the Latest Firmware:
- Visit the official HP website and navigate to the Support section.
- Enter your printer model and download the latest firmware update.
- Install the Update:
- Follow the on-screen instructions to update the firmware.
- Restart the printer once the update is complete.
Step 4: Disconnect Network Connections
If your printer is connected to a network, a network-related issue might be causing the error. Temporarily disconnect the printer from the network.
- Turn Off the Printer: Power down the device.
- Disconnect Ethernet/Wi-Fi: Unplug the Ethernet cable or disable Wi-Fi on the printer.
- Use a USB Connection: Connect the printer directly to your computer using a USB cable.
Check if the error disappears. If it does, investigate your network configuration for potential issues.
Step 5: Remove Optional Accessories
Faulty accessories or third-party hardware can interfere with the printer.
- Turn Off the Printer: Power down the device.
- Remove Accessories: Detach any additional components, such as extra paper trays, DIMMs, or third-party add-ons.
- Restart the Printer: Power it back on and check if the error persists.
Step 6: Perform a Cold Reset
A cold reset restores the printer to its factory settings, erasing all user configurations.
- Refer to Your Printer’s Manual: Each HP printer model has specific instructions for performing a cold reset.
- Perform the Reset:
- Turn off the printer.
- Hold the Cancel or Reset button while powering it back on.
- Release the button when prompted.
- Reconfigure the Printer: After the reset, set up the printer as per your requirements.
Step 7: Check for Hardware Issues
If the error persists, inspect the printer for hardware problems.
- Check for Damage: Inspect the printer for visible signs of wear and tear.
- Contact HP Support: If hardware issues are suspected, consult an authorized HP technician for repairs or replacement.
Preventing HP Printer Error 79
To avoid encountering the 79 Service Error in the future, follow these preventive tips:
- Update Firmware Regularly
Always keep your printer’s firmware up to date. Regular updates ensure compatibility and fix bugs. - Monitor Print Jobs
Avoid sending complex or potentially corrupted print jobs to the printer. - Use Compatible Software
Stick to HP-certified software and avoid third-party plugins or applications. - Maintain Network Stability
Use a reliable network connection and configure your network settings correctly. - Perform Regular Maintenance
Clean the printer and check for hardware issues periodically to ensure smooth operation.
HP Printer Models Affected by Error 79
Although the 79 Service Error can occur in any HP printer, it is most common in the following models:
- HP LaserJet Pro MFP series
- HP LaserJet Enterprise series
- HP Color LaserJet series
If your printer frequently encounters this error, consider upgrading to a newer model or consulting HP support for long-term solutions.
When to Seek Professional Help
If you have tried all the troubleshooting steps and the error persists, it’s time to seek professional assistance. Contact HP customer support or visit an authorized service center for further guidance.
Conclusion
The HP Printer Error 79 is a common but manageable issue. By following the troubleshooting steps outlined in this guide, you can quickly resolve the error and restore your printer’s functionality. Regular maintenance, firmware updates, and proper handling of print jobs can help prevent the issue from occurring in the future.
If the problem persists, don’t hesitate to contact HP support for professional assistance. With the right approach, your printer can continue to deliver reliable and efficient performance.
The HP 79 Service Error can be frustrating, but it is often resolvable with systematic troubleshooting. From clearing the print queue to updating firmware and checking hardware, there are multiple approaches to address the issue effectively.
By understanding the causes and preventive measures, you can minimize disruptions and ensure your printer remains a reliable tool for your needs. When in doubt, don’t hesitate to seek professional help to get your printer back in optimal working condition.
