Ricoh Aficio MP201SPF Service Manual page 408

Fax Error Codes
CFR or FTT not detected
after modem training in
0-16
confidential or transfer
mode
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
D115/D116
Check the line connection.
Replace the NCU or FCU.
Try adjusting the tx level and/or cable
equalizer settings.
The other end may have disconnected, or it
may be defective; try calling another machine.
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 NCU or 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,
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 between
ECM frames - G3 Bit Switch 0A, bit 4
4-4 SM Appendix