6.4. ERROR CODES *
If an error code occurs, retry the communication. If the same problem occurs,
try to fix the problem as suggested below. Note that error codes 4-00, 01, 02,
and 10 only appear in the error code display and on the service report.
Code
Meaning
Suggested Cause/Action
0-00
DIS/NSF not detected
within 40 s of Start being
pressed
Check the line connection.
Check the NCU - MFDU connectors.
The machine at the other end may be incompatible.
Replace the NCU or MFCE.
Check for DIS/NSF with an oscilloscope.
If the rx signal is weak, there may be a bad line.
0-01
DCN received
unexpectedly
The other party is out of paper or has a jammed
printer.
The other party pressed Stop during communication.
0-03
Incompatible modem at
the other end
The other terminal is incompatible.
0-04
CFR or FTT not received
after modem training
Check the line connection.
Check the NCU - MFDU connectors.
Try changing the tx level and/or cable equalizer
settings.
Replace the MFCE or NCU.
The other terminal may be faulty; try sending to
another machine.
If the rx signal is weak or defective, there may be a
bad line.
Cross reference
Tx level - NCU Parameter 01 (PSTN), RAM 807FB7
(PABX)
Cable equalizer - G3 Switch 07 (PSTN), G3 Switch
08 (PABX)
Dedicated Tx parameters - Section 4-4
0-05
Unsuccessful after
modem training at 2400
bps
Check the line connection.
Check the NCU - MFDU connectors.
Try adjusting the tx level and/or cable equalizer.
Replace the MFCE or NCU.
Check for line problems.
Cross reference
See error code 0-04.
0-06
The other terminal did
not reply to DCS
Check the line connection.
Check the MFDU - NCU connectors.
Try adjusting the tx level and/or cable equalizer
settings.
Replace the NCU or MFCE.
The other end may be defective or incompatible; try
sending to another machine.
Check for line problems.
Cross reference
See error code 0-04.
TROUBLESHOOTING
December 21st, 1995
ERROR CODES *
6-30
