162
502 XMT/
RCV(V.34)
B, C, D During reception, CD turned OFF
or continued ON for long time.
During communication, lost loop -
current.
Line is disconnected.
Transmitter is defective.
FCB PCB or LCU PCB are
defective.
503 XMT/
RCV(V.34)
B, C, D CS of modem is not able to turn
ON during training.
FCB PCB is defective.
Line is disconnected.
504 RCV/V.34
(Polling)
B Polling is rejected from the remote
station.
No polling document is set.
505 XMT/V.34
(Polling)
B Polling XMT is rejected. No polling document is set.
540 XMT ECM B No response after transmitting 3rd
CTC or DCN received.
Incompatible interface.
541 XMT ECM D No response after transmitting 3rd
EOR or received DCN.
Line is faulty.
LCU PCB abnormal.
542 XMT ECM D No response to the 3rd RR trans-
mitted or received DCN.
Remote unit is abnormal.
543 XMT ECM D T5 timer (60 sec.) elapsed without
MCF.
Remote unit is abnormal.
544 XMT ECM D Stopped Transmission after EOR
Transmission.
Line is faulty.
LCU PCB abnormal.
550 RCV ECM C Timer between frames in phase C
has elapsed.
Defective remote station.
554 RCV ECM D Transmitted ERR after receiving
EOR.
Faulty line.
555 RCV ECM D Transmitted PIN after receiving
EOR.
Faulty line and Operator Call
requested by RX side.
570 RCV B Password or machine code did not
match during remote diagnostic
communication.
571 XMT B Remote unit did not have the
remote diagnostic function.
580 XMT B Sub-address transmission to a unit
that has their DIS bit 49 (NSF bit
155) OFF.
Sub-address transmission to a
unit that has no Sub-address
function.
581 XMT B Sub-address Password transmis-
sion to a unit that has their DIS bit
50 (NSF bit 156) OFF.
Sub-address transmission to a
unit that has no Sub-address
function.
601 XMT ADF Door was opened during ADF
transmission.
623 XMT A No document was in the ADF.
(Built-in dialer engaged)
Operator removed the document
from the ADF after dialing was
completed.
Document is not set properly in
the ADF.
630 XMT or
RCV
(Polling)
B Redial count over. No dial tone detected.
Sensor dial tone is not detected.
(destination dependent)
Busy tone is detected.
(destination dependent)
T1 timer (35±5 sec.) elapsed
without a signal from the receiver.
Information Codes
Code Mode Phase Description of Problem Cause