Ricoh M281 Series Service Manual page 860

Error Codes
Code
EOL signal (end-of-line) from
the other party not received
0-21
within 5 s of the previous EOL
signal
The signal from the other
party was interrupted for more
0-22 than the acceptable modem
carrier drop time (default: 200
ms)
Too many errors during
0-23
reception
Data block format failure in
0-29
ECM reception
D255/D256 FAX OPTION
Meaning
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Reference:
Maximum interval between EOLs and between
ECM frames - G3 Bit Switch 0A, Bit 4
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Reference:
Acceptable modem carrier drop time: G3
Switch 0A, Bits 0 and 1
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Reference:
RX cable equalizer: G3 Switch 07 (PSTN)
RX error criteria: Communication Switch 02,
Bits 0 and 1
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Suggested Cause/Action
Check the connection 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 been disconnected.
Check the connection.
Replace the FCU.
The remote machine may be defective.
Check for line noise or other line problems.
Try adjusting the acceptable modem
carrier drop time.
Check the connection.
Replace the FCU.
The remote machine may be defective.
Check for line noise or other line problems.
Try asking the other party to adjust their
TX level.
Try adjusting the RX cable equalizer
setting and/or RX error criteria.
Check for line noise or other line problems.
Check the FCU - NCU connectors.
Replace the NCU or FCU.
26 SM