Hard‑Reset Your HP DesignJet T730 / T830 to Clear Frozen Panels and Error Codes

Having trouble with a frozen screen or persistent error on your HP DesignJet T730 or T830? The official HP service manual includes a hidden reset known as the Semi‑Full Reset—a powerful tool used by HP-certified techs to clear stubborn faults and restore core printer functions. Here’s how to access it and when to use it, straight from the manual.

A Semi‑Full Reset is a deeper form of reset that clears several internal components of the printer’s memory. It removes the system configuration settings, which include customized preferences and network configurations. Additionally, it erases all print queues and cache data, ensuring that any stuck or failed print jobs are completely purged.

The reset also clears all stored error logs, which can help eliminate recurring faults that stem from previously recorded issues. Finally, it reinitializes key internal components, allowing the printer to start fresh without lingering system inconsistencies.

However, unlike an OOBE (Out-of-Box Experience) Reset, the Semi‑Full Reset does not wipe the printer’s firmware or fully revert the device to its factory-new condition. It is intended as a recovery tool that preserves the core system while resolving most operational and software-level problems.

1. Turn on the printer (or restart if already on).
2. On the Home Screen, tap the Return (↩) icon in the bottom-left corner four times in a row.
3. The hidden Support Menu will now appear.
4. Navigate to: Support Menu > Resets Menu > Semi-Full Reset
5. Tap OK to confirm. The printer will power off automatically.
6. Manually turn the printer back on.

Use this reset if you're experiencing:

• A frozen control panel
• Boot loop (stuck on HP logo)
• Communication or print errors
• Firmware update failure

This reset should only be used if all other troubleshooting steps have failed to resolve the issue. It is not intended for casual users and is recommended only for trained technicians or experienced personnel. After performing the reset, you may need to reconfigure certain settings such as language, region, and network preferences. If possible, it is advisable to back up any important settings or configurations beforehand, as they may be lost during the reset process.

• The printer initializes core systems.
• Log files and active queues are cleared.
• Service menu access remains intact.
• You may be prompted to select country/language.

If your DesignJet T730 or T830 is stuck, sluggish, or throwing frequent errors, the Semi‑Full Reset is your go-to recovery tool. This reset is officially listed in HP’s service manual and is often enough to restore smooth, reliable operation—without needing full factory reinitialization.

Access Item, Inc.’s complete service manual for the HP DesignJet T730, T830, along with our expanding library of technical guides for HP, Canon, Lexmark, and other major brands—all ready for instant download.