Kyocera TASKalfa MZ4000i/MZ3200i FAX platform — E01821
Kyocera E01821 means the selected receive speed is not supported for this communication. The guidance here is specific to TASKalfa MZ4000i/MZ3200i FAX platform and the Fax/speed compatibility operation.
Error meaning
The selected receive speed is not supported for this communication.
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.
- E01821
What usually causes it
- This is the receive-direction counterpart of a speed compatibility problem: the incoming communication is using a receive speed or mode the current fax setup cannot accept. The remote sender and local receive settings both matter.
- The exact condition recorded for this code is: The selected receive speed is not supported for this communication.
- Review any forced receive-speed setting and allow a compatible receive mode when the environment permits it. Ask the sender to retry at a lower or standard fax speed if their device can control transmission speed.
What to try
Check the condition this code actually names
Use a compatible receive-speed setting.
Isolate the affected part of the workflow
Review any forced receive-speed setting and allow a compatible receive mode when the environment permits it. Ask the sender to retry at a lower or standard fax speed if their device can control transmission speed.
Run a controlled confirmation test
Use a fresh incoming test from the same sender after the receive-side setting is corrected. A successful receipt shows that the line can carry the fax and that the remaining issue was negotiation speed.
After each corrective action
Retry the original operation that produced E01821. If it works, stop there rather than moving into unrelated troubleshooting.
If the code returns
If E01821 appears only from one sender, preserve that sender number and equipment type. If many senders fail, document the local receive-speed setting and telephone-line path before escalation.
When service may be needed
Keep changes within documented fax communication settings. Do not alter service parameters or line electronics to force a receive mode.
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.