BT Atmospheric air release error

Error code
  • 034864 BT Atmospheric air release error
Occurrence condition
  • The pressure does not drop below the specified value in BT ejection.
Assumed cause
  • Maintenance box failure (wet moisture permeable membrane)
  • Selector Unit failure
  • Waste ink path ink
Related parts
  • Ink System Unit
Troubleshooting

Step

Confirmation and action

YES

NO
1

Replace the Maintenance box

Did the trouble go away?

 End

Go to step 2
2

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 3
3

Replace the Ink System Unit

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

Replace the Main Board

  • Did the trouble go away?
 End Go to step 5
5

Replace the MCU board

  • Did the trouble go away?
 End

Contact EPSON Local Service Representatives