Canon GP160DF, Service Manual

Page: 409 / 797

COPYRIGHT © 1999 CANON INC. CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
13-175
Cause
• The other party’s machine is not capable of
reception. (No paper)
• User’s telephone number is not registered.
(When the other party’s machine is a Ricoh
3000L)
• Password does not match for polling recep-
tion.
• Document is not set for polling transmis-
sion.
• Reception was attempted but there is no paper.
• The line condition is poor and the other
party’s machine can not properly receive
the protocol signal.
• Malfunction due to echo.
• Image signal or Q signal can not be
received. The other party’s machine has
exceeded the limit for number of protocol
signal re-transmissions.
• The line condition is poor and the other
party’s transmitting machine can not fall
back.
Countermeasure
• Have the other party’s machine set so that it
can receive. (Set paper)
• Register the user’s telephone number.
• When the other party’s machine is the
same model, contact the other party and
synchronize the passwords. When the other
party’s machine is made by another manu-
facturer, contact the other party and have
them set the machine so that is can perform
polling transmission.
• Set the document and have the other
party’s machine call again.
• Set paper.
• Raise the modem output level in #2 MENU
parameter 007, so the other party’s machine
can properly receive the protocol signal.
(1) Refer to #1 SSSW-SW03 for echo coun-
termeasures
(2) Lower the modem output level in #2
MENU parameter 007, so the output
echo is not received.
(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 para-
meter 005, so the other party’s machine
can properly receive the signal.
(3) Have the other party’s machine’s trans-
mission start speed lowered.
(1) Ease the RTN transmission conditions by
#3 NUMERIC Param. 002-004, so RTN
is not output.
(2) Adjust the NL equalizer in #2 MENU
parameter 005, so the signal is properly
received.
##0201 [TX/RX] DCN reception by other than normal binary protocol
Cause
• Protocol signal fault.
Countermeasure
• Record the communication protocol on DAT
and analyze it.
##0224 [TX/RX] Trouble occurs in the protocol signal during G3 communications