Canon GP160DF Service Handbook page 170

CHAPTER 5 SELF DIAGNOSIS
##0775 [TX] A significant signal can not be detected and the limit for number of protocol sig-
nal re-transmissions is exceeded after EOR-MPS output
• The line condition is poor and the other
party's machine can not properly receive
EOR-MPS.
• The line condition is poor and the signal
can not be received properly.
##0777 [TX] DCN received after EOR-MPS output
• The line condition is poor and the other
party's machine can not properly receive
EOR-MPS.
• The stop button was pressed during com-
munications.
##0778 [TX] Limit for the number of protocol signal re-transmissions is exceeded or T5 time
limit (60 seconds) is exceeded after PPS-MPS output
• The other party's machine's page buffer is
full, or RNR was received after output of
PPS-MPS because the machine was in
use, and after RR output a significant signal
could not be properly received.
5-28
Cause
Cause
Cause
Countermeasure
• Raise the modem output level in #2 MENU
parameter 007, so the other party's
machine can properly receive EOR-MPS.
• Have the other party's machine's output
level raised so the signal can be received
properly.
Countermeasure
• Raise the modem output level in #2 MENU
parameter 007, so the other party's
machine can properly receive EOR-MPS.
• Resend.
Countermeasure
(1) Set ECM Tx to "OFF" in the user mode
data registration's Tx settings.
(2) After registering one-touch or coded dial-
ing in the user mode, lower Tx speed set-
ting using detailed settings.