Canon DU7-1178-000, Service Manual, Page: 80 / 122

Chapter 4
4-3
common settings of the folder. To transmit files with iR, write privileges for the folder are required.
- When the WindowsXP firewall function is active or some application restricting port access has been
installed, the port used in SMB can be made available.
- Settings in the user mode can enable 2 byte code to be used in the FTP server. However, if this is not
supported on the server side, it will not operate. Therefore, check that the server side has been pro-
grammed to allow 2 byte code.
Following are descriptions of some of the kinds of problems that may be expected with the servers.
- Check that the SMTP server, DNS server is working properly. If using POP before SMTP, also check
the POP server operation.
- If the server itself is working, there may be errors in the settings. Check whether mail transmission/ re-
ception is possible from another mail account. If mail transmission/ reception is possible from another
mail account, reset the POP authentication or SMTP authentication account. In the case of SMTP recep-
tion, if the iR host name is not recorded in the DNS server as an MX record, mail cannot be sent to iR, so
it is necessary to check that DNS registration has been made.
<Likely problems with iR>
- If transmission from the PC is normal, check again whether those settings match the iR settings.
- If the registration contents of the primary DNS server do not match those of the secondary DNS server,
in some cases operation with the PC will be normal while operation with the 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. How-
ever, 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 pos-
sible that a problem has arisen with the DNS not being able to solve the name. In that case, when regis-
tering 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 com-
munication 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.