Ricoh M0A0, Service Manual

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3.Troubleshooting
16
Code Meaning Suggested Cause/Action

Replace the FCU.

Defective remote terminal

Check for line noise or other line problems.

Try asking the other end to adjust their tx level.

Try adjusting the rx cable equalizer setting and/or rx
error criteria.
Cross reference

Rx cable equalizer - G3 Switch 07 (PSTN)

Rx error criteria - Communication Switch 02, bits 0 and
1
0-29 Data block format failure in ECM reception

Check for line noise or other line problems.

Check the FCU - NCU connectors.

Replace the NCU or FCU.
0-30 The other terminal did not reply to NSS(A)
in AI short protocol mode.
 Check the line connection.
 Try adjusting the tx level and/or cable equalizer
settings.
 The other terminal may not be compatible.
Cross reference
Dedicated tx parameters - Section 4
0-32 The other terminal sent a DCS, which
contained functions that the receiving
machine cannot handle.
 Check the protocol dump list.
 Ask the other party to contact the manufacturer.
0-33 The data reception (not ECM) is not
completed within 10 minutes.

Check the line connection.

The other terminal may have a defective modem/FCU.
0-52 Polarity changed during communication

Check the line connection.
Retry communication.
0-55 FCU does not detect the SG3.  FCU firmware or board defective.

SG3 firmware or board defective.
0-56 The stored message data exceeds the
capacity of the mailbox in the SG3.
SG3 firmware or board defective.
0-70 The communication mode specified in
CM/JM was not available.
(V.8 calling and called terminal)

The other terminal did not have a compatible
communication mode (e.g., the other terminal was a
V.34 data modem and not a fax modem.)

A polling tx file was not ready at the other terminal
when polling rx was initiated from the calling terminal.
0-74 The calling terminal fell back to T.30 mode,
because it could not detect ANSam after

The calling terminal could not detect ANSam due to
noise, etc.