Head ID reading NACK error

Error code
  • 031120 NVT check ID read NACK error 0
  • 031121 NVT check ID read NACK error 1
  • 031122 NVT check ID read NACK error 2
  • 031123 NVT check ID read NACK error 3
  • 031124 NVT check ID read NACK error 4
  • 031125 NVT check ID read NACK error 5
  • 031160 NVT nozzle rank read NACK error 0
  • 031161 NVT nozzle rank read NACK error 1
  • 031162 NVT nozzle rank read NACK error 2
  • 031163 NVT nozzle rank read NACK error 3
  • 031164 NVT nozzle rank read NACK error 4
  • 031165 NVT nozzle rank read NACK error 5
  • 031220 NVT nozzle rank mode value read NACK error 0
  • 031221 NVT nozzle rank mode value read NACK error 1
  • 031222 NVT nozzle rank mode value read NACK error 2
  • 031223 NVT nozzle rank mode value read NACK error 3
  • 031224 NVT nozzle rank mode value read NACK error 4
  • 031225 NVT nozzle rank mode value read NACK error 5
  • 031280 NVT mode value rank nozzles count read NACK error 0
  • 031281 NVT mode value rank nozzles count read NACK error 1
  • 031282 NVT mode value rank nozzles count read NACK error 2
  • 031283 NVT mode value rank nozzles count read NACK error 3
  • 031284 NVT mode value rank nozzles count read NACK error 4
  • 031285 NVT mode value rank nozzles count read NACK error 5
  • 031380 Head ID reading NACK error
Occurrence condition
  • When head replacement, Nack does not return when the main unit accesses the memory to read the memory value.
  • Noise occurred when reading memory information or communication failed.
  • The contents written to memory are incorrect.
Assumed cause
  • Data failure due to noise
  • Head FFC failure / connection failure
  • Head Unit failure
Defect-related parts
  • Head FFC
  • Head Unit
  • Main Board
Troubleshooting
Step Confirmation and action YES NO
1

Checking the connection of FFC connecting to the Head Unit and Main Board

  • Check if there is no problem inserting FFC
  • Check the route visually for FFC disconnection and check for scratches
  • Check is there ink adhesion at contacts.

Does the error go away?

 End Go to step 2
2

Replace the Head Unit

  • Does the error go away?
 End Go to step 3
3

Replace the Main Board

  • Does the error go away?
 End

Contact Epson local service representatives.