Kyocera TASKalfa MZ4000i/MZ3200i FAX platform — E/U03500
Kyocera E/U03500 means the requested subaddress box is not registered on the local device. The guidance here is specific to TASKalfa MZ4000i/MZ3200i FAX platform and the Fax/subaddress box operation.
Error meaning
The requested subaddress box is not registered on the local device.
This interpretation is tied to the reviewed family/platform and subsystem. Do not reuse the code by itself on another printer family.
Applies to
TASKalfa MZ4000i/MZ3200i FAX platform
- TASKalfa MZ4000i
- TASKalfa MZ3200i
Common formatting
These are lookup/formatting aliases for this reviewed condition, not separate pages.
- E/U03500
What usually causes it
- The requested subaddress box is not registered on the local device. A fax can arrive normally while a subaddress delivery fails because the named box itself does not exist in the machine configuration.
- The exact condition recorded for this code is: The requested subaddress box is not registered on the local device.
- Check the subaddress value against the list of registered local boxes and correct the destination to an existing box, or create the intended box through the authorized administrator workflow.
What to try
Check the condition this code actually names
Create/select the correct subaddress box or correct the destination subaddress.
Isolate the affected part of the workflow
Check the subaddress value against the list of registered local boxes and correct the destination to an existing box, or create the intended box through the authorized administrator workflow.
Run a controlled confirmation test
Send a small test specifically to the corrected subaddress. Do not remove unrelated reception restrictions or passwords while verifying that the box identity is valid.
After each corrective action
Retry the original operation that produced E/U03500. If it works, stop there rather than moving into unrelated troubleshooting.
If the code returns
If E/U03500 persists, record the exact subaddress digits being sent and the box identifier displayed locally; leading zeros or stale saved destinations can make apparently similar entries different.
When service may be needed
Do not bypass access controls to create a box. If box administration is restricted, have the authorized fax administrator correct the registration.
Continue with guided troubleshooting
If the printer still is not working after the reviewed checks, carry this verified error context into the guided troubleshooter.
Related information
Verified source
Official two-model FAX guide. Error Code List establishes fax/i-FAX meanings and family scope; public guidance is independently paraphrased.