6.4. ERROR CODES
If an error code occurs, retry the communication. If the same problem oc-
curs, 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 re-
port.
Code
Meaning
Suggested Cause/Action
0-00
DIS/NSF not detected
within 40s of Start being
pressed
Check the line connection
Check the NCU - FCU connectors.
The machine at the other end may be incompatible.
Replace the NCU or FCU.
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 - FCU connectors.
Try changing the tx level (use NCU parameter 01 or a
dedicated tx parameter for that address).
Replace the FCU 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.
0-05
Unsuccessful after
modem training at 2400
bps
Check the line connection.
Check the NCU - FCU connectors.
Try adjusting the tx level (use NCU parameter 01 or a
dedicated tx parameter for that address).
Replace the FCU or NCU.
Check for line problems.
0-06
The other terminal did
not reply to DCS
Check the line connection.
Check the FCU - NCU connectors.
Try adjusting the tx level (use NCU parameter 01 or a
dedicated tx parameter for that address).
Replace the NCU or FCU.
The other end may be defective or incompatible; try
sending to another machine.
Check for line problems.
T
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u
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s
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o
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ti
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g
TROUBLESHOOTING
1st August, 1994
ERROR CODES
6-21
