Canon imageRunner iR2270 Service Manual page 48

Chapter 4
iR will not. This is appears to be because, if the PC is not registered in the primary DNS,
the secondary DNS is then referenced. However, if iR is not found in the primary, the
search ends at that point.
- When the SMTP server and the POP server are used with the host name (FQDN) entered,
it may be possible that a problem has arisen with the DNS not being able to solve the name.
In that case, when registering on the server, try entering the IP address directly, instead of
the host name (FQDN).
- If the network connection Ethernet driver settings are on automatic, it may be that
problems of affinity with the hub may cause improper operation. In that case, using manual
settings to change the network connection speed and semi-duplex/ full duplex settings may
restore normal operation. On the other hand, if the settings are manual, it may be that they
do not match the network environment and communication is, therefore, disabled.
- If the problem still cannot be resolved, it may be possible to resolve the problem by
capturing the iR communication packets. In that case, it will be necessary to get the
approval of the user. When the packets are being filtered, it is the MAC address that is used
for filtering, not the IP address. If the IP address is used, some packets, such as broadcast,
etc., cannot be captured.
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