Transistor temp error (error code: 031003)

Cause

Occurs if an FET of the main board or head drive circuit exceeds a set temperature.

Suspected cause
  • Main Board Assy failure
  • Printhead failure
Troubleshooting
Procedure Check and measure Yes No
1

Did the corresponding error occur after the power was turned off and then back on?
Turn the power off and then leave the product for a while. Did the error occur when the power was turned back on?

Replace the following parts in sequence.

  • Print Head
  • Main Board

(If the problem persists, contact Epson local service representatives)

End