Canon SmartBase 1270D Service Manual page 363

##768 [TX] In ECM transmission, the allowed number of procedure signal re-
transmissions was exceeded or a T5 time-over (60 sec) condition
occurred after transmission of PPS-EOP
Cause: The page buffer of the other party is full or is engaged; as such, although
RNR was received after transmission of PPS-EOP and then RR was transmit-
ted, no significant signal was received correctly thereafter.
Remedy: 1. Start G3 mode, and transmit once again (Prohibit the ECM mode).
2. Decrease the transmission start speed.
3. Record the protocol on a DAT or MD, and have it analyzed by the local
##769 [TX] In ECM transmission, the allowed number of procedure signal re-
transmissions was exceeded after transmission of PPS-EOP
Cause: The line condition is poor; as such, although PPR was received 4 times after
transmission of PPS-EOP and then CTC was transmitted, the other party
could not receive it correctly.
Remedy: Increase the transmission level so that the other party may receive CTC cor-
Cause: rectly.
The line condition is poor; as such, although PPR was received 4 times after
transmission of PPS-EOP and then CTC was transmitted, no significant signal
Remedy: was received correctly thereafter.
Ask the operator of the other party to increase the transmission level so that
the signal may be received correctly.
##770 [TX] In ECM transmission, no significant signal can be received after
transmission of EOR-NULL, and the allowed number of procedure
signal re-transmissions was exceeded
Cause: The line condition is poor, and the other party cannot receive EOR-NULL
correctly.
Remedy: 1. Increase the transmission level so that the other party may receive EOR-
2. Adjust the NL equalizer so that the other party may receive EOR-NULL cor-
3. Add an echo protect tone to the V.29 modem signal for transmission.
Cause: The line condition is poor, and the significant signal cannot be received correctly.
Remedy: Ask the operator of the other party to increase the transmission level so that the
signal may be received correctly.
COPYRIGHT © 2002 CANON INC.
Canon office and/or Technical Center.
NULL correctly.
rectly.
2000 2000 2000 2000 CANON SmartBase PC1210D/1230D/1270D REV. 1 MAR. 2002
CHAPTER 7 TROUBLESHOOTING
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