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Troubleshooting > Error Code List
U01700 - U01720
Communication error occurred during high-speed transmission. Send again.
If you still have trouble, reduce TX Start Speed and send again.
NOTE
If the communication error occurs frequently, change the default setting of TX Start Speed in System
Menu.
U01721
Communication error occurred during high-speed transmission. Designated transmission speed may
not be available for the recipient machine.
Reduce the transmission start speed and send again.
U01800 - U01820
Communication error occurred during reception of high-speed transmission. Ask the sender to reduce
the transmission speed and send again or reduce the RX Start Speed in System Menu.
U01821
Communication error occurred during reception of high-speed transmission. Designated transmission
speed may not be available for this machine. Ask the sender to reduce the transmission speed and
send again or reduce the RX Start Speed in System Menu.
U03000
During polling reception, a fax could not be received because no originals were set in the other party’s
fax machine. Check with the other party.
U03200
Sub address bulletin board reception was attempted and the other party’s machine is an our brand
model, but the specified sub address box contained no data. Check with the other party.
U03300
An error occurred due to either 1 or 2 below.
Check with the other party.
1 The other party’s machine is an our-brand model and transmission restrictions were found set by
the other party during polling reception. Communication was interrupted because the password was
incorrect.
2 The other party’s machine is an our-brand model and transmission restrictions were found set by
the other party during sub address bulletin board reception.
Communication was interrupted because the password was incorrect.
U03400
Polling reception was interrupted because the password entered by the other party did not match the
Local FAX ID on the receiving machine. Check with the other party.
U03500
Sub address bulletin board reception was attempted and the other party’s machine is an our brand
model, but the specified sub address box was not registered on the other party’s machine.
Check with the recipient.
U03600
The other party’s machine is an our-brand model and sub address bulletin board reception was
interrupted because the specified sub address password was incorrect. Check with the other party.
U03700
Sub address bulletin board reception was attempted but the other party’s machine either does not
have a sub address bulletin board communication function or there were no originals in any of the
originals transfer boxes (sub address boxes).
U04000
Specified sub address box is not registered in our brand recipient machine, or the sub address does
not match.
U04100
Recipient machine is not equipped with a sub address box function, or the sub address does not
match.
U04200
Encrypted transmission was canceled because the specified box is not registered.
U04300
Encrypted transmission was canceled because the recipient fax is not equipped with an encrypted
communication function.
U04400
Encrypted transmission was canceled because the encryption key does not match.
U04500
Encrypted reception was canceled because the encryption key does not match.
U05100
Transmission was canceled because communication requirements are not met due to the
transmission restriction set on this machine. Check with the recipient.
U05200
Reception was canceled because communication requirements are not met due to the reception
restriction set on this machine.
Error Code
Possible Cause/Action
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