Canon iR1200 Series Service Manual page 379

##201[TX/RX] DCN was received through a non-normal procedure
Remedy: 1. Ask the operator of the other party to increase the
transmission level so that the signal may be received
correctly.
2. Adjust the NL equalizer so that the signal may be
received correctly.
3. Ask the operator of the other party to decrease the
transmission start speed.
Cause: The line condition is poor, and the other party (transmitting
machine) cannot use fall-back.
Remedy: 1. Ask the operator of the other party to increase the
transmission level so that the signal may be received
correctly.
2. Adjust the NL equalizer so that the signal may be
received correctly.
3. Loosen the RTN transmission conditions so that RTN
will not be transmitted.
##220 [TX/RX] System error (e.g., main program may have gone away)
Cause: Noise caused the CPU to malfunction.
Remedy: Turn off and then on the power.
##223 [TX] The line was disconnected during communication
Cause: The Stop button was pressed during image transmission.
Remedy: Transmit once again.
##224 [TX/RX] Fault occurred in the communication procedure signal
Cause: The original on the transmitting party is not correctly fed, forcing
polling mode to start (i.e., DCN was received in response to DIS).
Remedy: 1. Check to make user that the original is placed correctly.
2. If the feeding roller is worn, replace it.
T-14-39
T-14-40
T-14-41
Chapter 14
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