Ricoh Aficio MP C3001 Service Manual page 1828

Error Codes
Code Meaning
Facsimile data not
0-20 received within 6 s of
retraining
EOL signal (end-of-line)
from the other end not
0-21
received within 5 s of the
previous EOL signal
The signal from the other
end was interrupted for
more than the acceptable
0-22
modem carrier drop time
(default: 200 ms)
D545
Suggested Cause/Action
If the rx signal level is too low, there may be a
line problem.
Cross reference
See error code 0-08.
Check the line connection.
Replace the FCU.
Check for line problems.
Try calling another fax machine.
Try adjusting the reconstruction time for the
first line and/or rx cable equalizer setting.
Cross reference
Reconstruction time - G3 Switch 0A, bit 6
Rx cable equalizer - G3 Switch 07 (PSTN)
Check the connections between the FCU and
line.
Check for line noise or other line problems.
Replace the FCU.
The remote machine may be defective or may
have disconnected.
Cross reference
Maximum interval between EOLs and between
ECM frames - G3 Bit Switch 0A, bit 4
Check the line connection.
Replace the 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
24 SM