Canon GP160DF, Service Manual

Page: 407 / 797

COPYRIGHT © 1999 CANON INC. CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
13-173
Cause
• The line condition is poor and the protocol
signal can not be properly received by other
party’s machine.
• The line condition is poor and the image
signal can not be properly received by the
other party’s machine.
• Malfunction due to echo.
Countermeasure
• Have the other party raise the output level
so the protocol signal can be properly
received.
• Raise the modem output level in #2 MENU
parameter 007, so the other party’s
machine can properly receive the signal.
(1) Refer to #1 SSSW-SW03 for echo coun-
termeasures
(2) Lower the modem output level in #2
MENU parameter 007, so the transmitted
CFR echo is not received.
##0106 [RX] Protocol signal can not be received for 6 seconds in protocol signal standby dur-
ing reception
Cause
• The line condition is poor. After a 2400 bit/s
signal is received, the signal from the other
party’s machine is not properly received.
• Malfunction due to echo.
Countermeasure
(1) Have the other party’s machine’s output
level raised so the other party’s
machine’s signal is properly received.
(2) Adjust the NL equalizer in #2 MENU
parameter 005, so the other party’s
machine can properly receive the TCF.
(3) Ease the RTN transmission conditions by
#3 NUMERIC Param. 002-004, so RTN
is not output.
(1) Refer to #1 SSSW-SW03 for echo coun-
termeasures.
(2) Lower the modem output level in #2
MENU parameter 007, so the transmitted
signal’s echo is not received.
##0107 [RX] Fall back not possible for the transmitting machine during reception
Cause
• Protocol signal abnormality.
Countermeasure
• Record the Communication protocol on DAT
and request it to be analyzed by the
Technical Center.
##0109 [TX] Signals other than DIS, DTC, FTT, CFR and CRP are received and the limit for
the number of protocol signal re-transmissions is exceeded after DCS output during transmis-
sion