如果您在Windows计算机上打印文档时在 HP 打印机上看到79 服务错误 (79 Service Error )，您可以通过以下一些解决方案来解决此问题。尽管此特定问题出现在HP LaserJet Pro打印机上，但您也可能在其他打印机上遇到同样的问题。无论哪种方式，您都需要按照相同的步骤来摆脱它。
整个错误消息是这样的：
79 Service Error
Turn Off then On
如何修复HP 打印机(HP Printer)上的服务错误 79(Service Error 79)
要修复HP 打印机(HP Printer)上的服务错误 79(Service Error 79)，请执行以下步骤：
- 关机再开机
- 验证连接
- 更新系统固件
- 拔下电涌保护器
- 重新安装打印机驱动程序
- 联系客户支持
让我们详细检查这些步骤。
1]电源关闭和打开
在进行下面提到的其他步骤之前，这可能是您需要检查的第一件事。由于您的打印机已经显示此消息，因此您必须先遵循它，然后再执行任何其他操作。但是，如果重新启动不能解决问题，您可以检查其他方法。
2]验证连接
如果您以无线方式使用打印机，最好验证您是否有有效的连接。如果源设备在打印时断开连接，则有可能在您的打印机上收到此错误消息。这就是为什么您必须检查您的打印机和源设备之间的连接。
3]更新系统固件
如果您很长时间没有更新打印机的固件，您可能会在打印文档时收到此错误。解决此问题的最简单方法是将固件更新到最新版本。为此，请执行以下操作：
- 打开打印机上的 设置 (Settings )菜单。
- 向下滚动(Scroll)到底部并选择 服务 (Service )选项。
- 选择 LaserJet 更新 (LaserJet Update )选项。
- 选择 立即检查更新 (Check for Updates Now )选项。
- 允许您的打印机下载并安装最新的固件。
这些是更新打印机固件的通用步骤。根据型号的不同，这些选项可能会放置在不同的位置。如果您遇到任何问题，您可以寻求专业人士的帮助。
4]拔下电涌保护器
这是惠普在确认问题后给出的官方解决方案。如果您使用电涌保护器为打印机供电，则需要将其拔下。您需要直接插入墙壁端口以提供电源。
5]重新安装打印机驱动程序
如果您已在Windows计算机和 HP 打印机之间建立有线连接，则您可能已经安装了驱动程序。如果是这样，建议根据您之前所做的做三件事：
- 如果您已经安装了驱动程序，请检查是否有任何更新。制造商通常会发送较小的更新来修补错误。
- 如果没有可用的更新，请从您的计算机中卸载驱动程序并重新安装。您可以使用名为Revo Uninstaller(Revo Uninstaller)、 CCleaner等的第三方工具 。
- 如果您在将打印机与Windows(Windows)计算机一起使用之前尚未安装驱动程序，建议您安装驱动程序。您可以在打印机随附的 CD 上找到驱动程序。否则，您可以前往惠普官方网站，搜索打印机并相应下载驱动程序。
6]联系客户支持
如果上述解决方案均无效，您可以随时联系客户支持。如果固件中存在其他内部问题，您可能无法在家中修复它。在这种情况下，您必须联系客户支持。
如何修复HP Laserjet Pro 400上的 79服务错误(Service Error)？
在HP Laserjet Pro 400或任何其他LaserJet打印机上修复 79服务错误(Service Error)的解决方案是相同的。您需要重新启动打印机、检查连接并将系统固件更新到最新版本。
如何修复HP 打印机上的错误 79 ？(Error 79)
要修复错误 79(Error 79)或 79服务错误(Service Error)，您需要一个接一个地执行上述所有步骤。但是，许多人声称固件更新为他们解决了这个问题。
阅读： (Read: )修复 Windows 上的佳能打印机错误 853。(Fix Canon Printer Error 853 on Windows.)
Fix Service Error 79, Turn Off then On, on HP Printer
If you see a 79 Service Error on an HP printer while printing a document on your Windows computer, here are some solutions you can go through to troubleshoot this problem. Although this particular problem appears on HP LaserJet Pro printers, you may get the same on others as well. Either way, you need to follow the same steps to get rid of it.
The entire error message says something like this:
79 Service Error
Turn Off then On
How to fix Service Error 79 on HP Printer
To fix Service Error 79 on HP Printer, follow these steps:
- Power off and on
- Verify connection
- Update system firmware
- Unplug surge protector
- Reinstall printer driver
- Contact customer support
Let’s check out these steps in detail.
1] Power off and on
It is probably the first thing you need to check before heading to the other steps mentioned below. As your printer is already showing this message, you must follow it before doing anything else. However, if a restart doesn’t resolve the issue, you can check other ways.
2] Verify connection
If you are using your printer wirelessly, it is better to verify if you have a valid connection or not. If the source device gets disconnected while printing, there is a chance of getting this error message on your printer. That is why you must check the connection between your printer and the source device.
3] Update system firmware
If you haven’t updated your printer’s firmware for a very long time, you might get this error while printing documents. The easiest way to get rid of this problem is by updating the firmware to the latest version. For that, do the following:
- Open the Settings menu on your printer.
- Scroll down to the bottom and select the Service option.
- Select the LaserJet Update option.
- Choose the Check for Updates Now option.
- Allow your printer to download and install the latest firmware.
These are the generic steps to update your printer’s firmware. Depending upon the model, these options might be placed at a different location. In case you get any problems, you can ask for a professional’s help.
4] Unplug surge protector
It is the official solution HP stated after acknowledging the issue. If you are using a surge protector to power up the printer, you need to unplug it. You need to plug into the wall port directly to provide the power supply.
5] Reinstall printer driver
If you have established a wired connection between your Windows computer and the HP printer, you might have already installed a driver. If so, it is recommended to do three things depending upon what you did earlier:
- If you have installed the driver already, check if there is any update. Manufacturers often send minor updates to patch a bug.
- If no update is available, uninstall the driver from your computer and reinstall it. You may use a third-party tool called Revo Uninstaller, CCleaner, etc.
- If you haven’t installed the driver before using the printer with your Windows computer, it is recommended to do that. You can find the driver on the CD provided with your printer. Otherwise, you can head to the official HP website, search for the printer, and download the driver, accordingly.
6] Contact customer support
If none of the aforementioned solutions is working, you can always contact customer support. If there is another internal issue in the firmware, you may not be able to fix it in your home. In such situations, you must contact customer support.
How do I fix the 79 Service Error on my HP Laserjet Pro 400?
The solutions of fixing the 79 Service Error on HP Laserjet Pro 400 or any other LaserJet printer are the same. You need to restart your printer, check the connection, and update the system firmware to the latest version.
How do I fix Error 79 on HP printer?
To fix Error 79 or 79 Service Error, you need to follow all the aforementioned steps one after one. However, many people claimed that the firmware update had fixed the problem for them.
Read: Fix Canon Printer Error 853 on Windows.
