Initial Pressure Error 1

Error code
  • 034807
Occurrence condition
  • The prescribed pressure is not reached at the first pressurization (pre-pressurization).
Assumed cause
  • Air leakage from air path in the Ink Supply Unit
  • Ink Supply Unit failure
  • Selector Unit failure
Related parts
  • Ink Supply Unit
  • Selector Unit
Troubleshooting
Step Confirmation and action YES NO
1

Check for air leaks in the air path of the Ink Supply Unit

[Part(s) to be checked]

Check the air path on the side of the Ink Supply Unit

  • Remove the joint and check to see if any foreign objects are caught in the sealing section.
  • Reattach the joint.


After the check is finished, execute the Failure Diagnostics Sequence 2.

Failure distinction code: 12 → Go to step 2

Failure distinction code: 03 → Go to step 3

Normal (Failure distinction code: 00) → End
2

Replace the Selector Unit

[Part(s) to be checked]

None


After the replacement is finished, execute the Failure Diagnostics Sequence 2.

 Failure distinction code: other than 00 → Go to step 3

Normal (Failure distinction code: 00) → End
3

Replace the Ink Supply Unit

[Part(s) to be checked]
None

Whether the error has been resolved or not can be checked by whether the error recurs in the ink filling sequence 1 during the replacement process.
After the replacement is finished, execute the Failure Diagnostics Sequence 2.

 Failure distinction code: other than 00 → Contact Epson local service representatives.

Normal (Failure distinction code: 00) → End