55-03DesignJet T650

HP DesignJet T650 error 55-03: Internal sensor issue

The HP DesignJet T650 error 55-03 indicates a communication error with the temperature sensor of the printing system. This code activates when the control system detects incoherent or null readings, locking the operation for safety to avoid damage from overheating. Resolving the error 55-03 in HP DesignJet T650 involves checking the sensor connections and the state of the main board.

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Common causes

  • 1Damaged sensor flat cable (FFC).
  • 2Overheating of the print area due to poor ventilation.
  • 3Obsolete firmware version with reading bugs.
  • 4Physical failure of the internal thermistor.

Solutions

Quick Diagnosis

If the error appears immediately upon turning on the plotter, it is likely a fault in the flat ribbon cable connecting the sensor to the motherboard.

Step-by-step Solution

  1. Electrical reboot: Turn off and unplug the equipment for 30 minutes.
  2. Environment verification: Ensure the plotter is in a well-ventilated area.
  3. Firmware load: If the plotter starts, verify the firmware version and install the latest update available.

Prevention and Maintenance

Avoid obstructing ventilation grilles. Keeping the plotter away from walls will significantly improve system cooling.

When to call a technician

The error 55-03 usually requires the intervention of a certified technician if it does not disappear after updating the firmware, as the internal sensor may have failed.

Equipment Technical Data

HP DesignJet T650 error 55-03: Internal sensor issue | Vimazdev