Oki OKIFAX 5750 Maintenance Manual page 891

4.7.2 Transmission troubleshooting
A) Transmission fails; a communication error occurs.
• Are the IP ADDRESS, SubNetMask and Default Gateway settings correct?
• Has the SMTP server been configured correctly?
• Has the host name been registered?
• If using DNS, is the DNS server address correct?
• Check to make sure that the server is not down.
• If DNS is ON, some servers may cause an error.
B) When I press a one-touch key with an email address assigned, a warning message
appears on the LCD.
• Have you entered an email address that has been assigned on this machine?
C) LCD shows message "OPTION BOARD ERROR".
• A network card I/F error has occurred - turn the power off and on again to recover.
D) I have turned MDN (or DSN) ON, but no confirmation has been returned.
• MDN: If the receiving InternetFAX/email client is not capable of receiving MDN, you may
not get any receipt.
• DSN: If the receiving server does not support DSN, you may not receive any confirma-
tion.
• Both MDN and DSN are sent as text-format messages; if the TEXT PRINT setting is
OFF, they will not be printed out.
E) The Tiff file I have sent cannot be printed out on the receiver.
• Have you sent the file at Ex-fine resolution or in coding mode other than MH? T.37
simple mode InternetFAX products support only the STD and FINE resolution settings
and MH coding mode.
41285901TH Rev.3
891 /