E5HP DeskJet 3755

Fix HP DeskJet 3755 Error E5: Scanner Troubleshooting

The E5 error code on the HP DeskJet 3755 indicates a scanner system error. This occurs when the scanner assembly fails to calibrate, often due to firmware glitches, unstable power, or internal mechanical obstruction. This error prevents copying and scanning functions from operating.

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Common causes

  • 1Calibration failure: The CIS scanner cannot locate the home position on the scan bed.
  • 2Power instability: Insufficient power prevents the scanner lamp from activating.
  • 3Firmware lag: Old software drivers prevent the scanner from initializing correctly.
  • 4Mechanical misalignment: The scanner assembly has been shifted due to rough handling.

Solutions

Diagnóstico rápido

The E5 error appears when you initiate a scan or copy task. If the scanner lamp does not light up or if the assembly remains stationary, the scanner initialization has failed.

Solución paso a paso

  1. Perform a hard reset: With the printer powered on, unplug the power cable from the rear of the device.
  2. Wait 60 seconds to allow the printer's internal capacitors to fully discharge.
  3. Plug the power cable directly into a wall outlet, bypassing any power strips or surge protectors.
  4. Power on the unit and watch the scanner assembly for its initial movement during the startup sequence.
  5. Update firmware by downloading the latest version from the HP support website if the issue persists.

Prevención y mantenimiento

  • Keep the scanner bed clear of heavy items to prevent optical rail misalignment.
  • Use a microfiber cloth with nothing but clean air or a tiny amount of water to clean the glass.
  • Regularly check for firmware updates to ensure better compatibility with scanning software.

Cuándo llamar a un técnico

If the error persists after a full power cycle and firmware update, there may be internal hardware damage, such as a broken ribbon cable or motor failure. Contact HP support for professional inspection.

Ficha técnica del equipo

  • Technology: CIS Scanner (Contact Image Sensor)
  • Resolution: Up to 1200 dpi
  • Consumables: HP 65 ink cartridges
  • Connectivity: USB 2.0, Wi-Fi 802.11b/g/n
  • Supported Systems: Windows 10, macOS, Android (via HP Smart)
  • Recommended usage: Compact multi-function home printer
  • Official drivers / firmware

Steps to follow

  1. 1

    Power reset

    Unplug the printer while it is still running.

  2. 2

    Discharge time

    Keep it unplugged for at least one minute to clear temporary memory.

  3. 3

    Direct connection

    Plug the device directly into a wall outlet to rule out power strip issues.

  4. 4

    Firmware update

    Update the printer firmware via the official HP website.

Frequently asked questions

Usually, no. It is typically a software communication error that is resolved by a hard power reset.

Power strips can sometimes cause voltage fluctuations that interfere with sensitive printer components like the scanner lamp.

The HP DeskJet 3755 uses the HP 65 ink cartridge family. Using genuine cartridges ensures the best reliability.

Use a soft, dry microfiber cloth. Avoid using harsh chemicals like window cleaners as they can damage the coating on the glass.

Fix HP DeskJet 3755 Error E5: Scanner Troubleshooting | Vimazdev