Code Meaning Suggested Cause/Action
0-21 EOL signal (end-of-line)
from the other end not
received within 5 s of the
previous EOL signal
Check the connections between the FCU, NCU, &
line.
Check for line noise or other line problems.
Replace the NCU or FCU.
The remote machine may be defective or may have
disconnected.
Cross reference
Maximum interval between EOLs and ECM frames -
G3 Bit Switch 0A, bit 4
0-22 The signal from the other
end was interrupted for
more than the
acceptable modem
carrier drop time (default:
0.2 s)
Check the line connection.
Check the FCU - NCU connectors.
Replace the NCU or FCU.
Defective remote terminal.
Check for line noise or other line problems.
Try adjusting the acceptable modem carrier drop time.
Cross reference
Acceptable modem carrier drop time - G3 Switch 0A,
bits 0 and 1
0-23 Too many errors during
reception
Check the line connection.
Check the FCU - NCU connectors.
Replace the NCU or FCU.
Defective remote terminal.
Check for line noise or other line problems.
Try asking the other end to adjust their tx level.
Try adjusting the rx cable equalizer setting and/or rx
error criteria.
Cross reference
Rx cable equalizer - G3 Switch 07 (PSTN), G3
Switch 08 (PABX)
Rx error criteria - Communication Switch 02, bits 0
and 1
0-24 Printer failure occurred
while the memory was
full during non-ECM
reception; negative
response returned
There is no memory space available, or substitute
reception is disabled.
Try asking the user to add optional extra memory.
0-30 The other terminal did
not reply to NSS(A) in AI
short protocol mode
Check the line connection.
Check the FCU - NCU connectors.
Try adjusting the tx level and/or cable equalizer
settings.
The other terminal may not be compatible.
Cross reference
Dedicated tx parameters - Section 4-4
0-52 Polarity changed during
communication
Check the line connection.
Retry communication.
1-00 Document jam Incorrectly inserted document or unsuitable
document type.
Check the ADF drive components and sensors.
Cross reference
ADF mechanical problems - Section 6-2-1
TROUBLESHOOTING August 7th, 1995
ERROR CODES
6-20
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