e5Smart Tank Plus 651

HP Smart Tank Plus 651 Error E5: Scanner Failure

The HP Smart Tank Plus 651 error E5 is a specific alert indicating an issue with the scanning system, usually an initialization error or a fault in the scanner lamp. When the printer powers on, the optical module performs a calibration movement; if it fails to reach the start point or the light does not activate, the firmware throws the E5 error to indicate the scanning function is unavailable.

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Common causes

  • 1Communication error in optical module initialization.
  • 2Scanner data cable (FFC) with a weak connection.
  • 3Scanner motor misaligned by accidental bumps.
  • 4Electronic fault in the lamp's light sensor.

Solutions

Quick Diagnostics

If you receive the E5 message when trying to copy or scan, check if the scanner light module makes any movement or if it simply remains still. A scanner that does not move upon powering on is usually a communication fault between the mainboard and the optical module.

Step-by-step Solution

  1. Disconnect the printer's power cable directly from the back while the unit is still powered on.
  2. Wait 60 full seconds before reconnecting the power cable.
  3. Ensure the scanner is not blocked by any heavy object placed on the lid.
  4. If the error continues, check via HP Smart for any pending firmware updates.

Prevention and Maintenance

Avoid moving the printer roughly with the scanner installed, as the optical module is very sensitive to vibrations that can misalign its internal components.

When to call a technician

If after reset attempts the scanner still does not initialize (no movement or light), the flexible flat cable (FFC) connecting the scanner is likely damaged.

Device Technical Specs

  • Technology: Flatbed scanner (CIS)
  • Resolution: Up to 1200 x 1200 dpi
  • Connectivity: Wi-Fi / HP Smart App
  • Compatible consumables: N/A (Fixed glass)
  • Recommended use: Office copies and scans
  • Official drivers / firmware

Steps to follow

  1. 1

    Power reset

    Unplug the printer while it is on and wait 60 seconds.

  2. 2

    Check cables

    Ensure the internal data cable is not loose from bumps.

  3. 3

    Check firmware

    Update the printer firmware via the HP Smart app.

Frequently asked questions

Often it is a temporary initialization failure; resetting usually solves most of these events.

Do not attempt to open the scanner unit; it is a sealed precision component that can lose calibration.

You can use your phone camera with the HP Smart App as a temporary alternative until the unit is repaired.

Keeping the printer updated with the latest firmware version prevents communication conflicts in the module.