Atmospheric air release error 2

Error code
  • 034858 Atmospheric air release error 2
Occurrence condition
  • Pressurization for cleaning is not released (air release) after the cleaning.
Assumed cause
  • Selector Unit failure
  • Ink System Unit failure
Related parts
  • Ink System Unit
Troubleshooting
Step Confirmation and action YES NO
1

Check harness connection

Are the harness connectors that connect to the Ink System Unit properly connected?

If not, reconnect them properly.

[Part(s) to be checked]

  • Ink System Unit Connector
  • Other connectors and FFCs you disconnected and reconnected

[Action]

  • Connect the connectors properly.

Is the error resolved?

 End

Go to step 2
2

Replace the Ink System Unit

  • Did the trouble go away?
 End Go to step 3
3

Replace the Main Board

  • Did the trouble go away?
 End Go to step 4
4

Replace the MCU board

  • Did the trouble go away?
 End Contact EPSON Local Service Representatives