Ricoh Type M12 Field Service Manual page 55

Code Meaning
The signal from the other end was
interrupted for more than the
0-22
acceptable modem carrier drop
time (default: 200 ms)
0-23 Too many errors during reception
Data block format failure in ECM
0-29
reception
The other terminal did not reply to
0-30
NSS(A) in AI short protocol mode
The other terminal sent a DCS,
0-32 which contained functions that the
receiving machine cannot handle.
Suggested Cause/Action
• 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
• Check the line connection.
• 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
• Check for line noise or other line problems.
• Check the FCU - NCU connectors.
• Replace the NCU or FCU.
• 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
• Check the protocol dump list.
• Ask the other party to contact the manufacturer.
Error Codes
53