Specifications
Appendix-16 OPERATION GUIDE
U01600 Communication error occurred during reception of 
high-speed transmission. Ask the sender to 
reduce the transmission speed and send again.
U01700 - U01720 Communication error occurred during high-speed 
transmission. Send again.
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.
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.
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.
Error Code Possible Cause/Action










