Dell H815DW User Manual page 353

You can select MH, MR, or MMR.
You can change the modem receive encoding with the following instructions.
1 Turn on the printer while holding down the 8 and 2 buttons on the number pad to start in Customer Mode.
2 Tap
button to tap Fax/Scanner Diag, and then tap OK.
3 Tap button until Parameter appears, and then tap OK.
4 Ensure that FAX Parameter appears, and then tap OK.
5 Tap button until G3M RX Coding appears, and then tap OK.
6 Tap button until the desired encoding appears, and then tap OK.
You can select MH, MR, or MMR.
Diagnosing the Fax Connection
You can diagnose the Fax connection using the FAX Line Diagnosis feature that can detect the abnormalities of
telephone line connection.
1 Turn on the printer while holding down the 8 and 2 buttons on the number pad to start in Customer Mode.
2 Tap button to tap Fax/Scanner Diag, and then tap OK.
3 Tap button until FAX Test appears, and then tap OK.
4 When the message Check FAX Connection appears, tap OK.
5 When the message Ready to Start appears, tap OK to start diagnosing the FAX connection.
One of the following diagnosing result is displayed.
Diagnosing result
Connection not Detected
Please Reconnect Telephone Line
Cable Connected Wrongly
Reconnect Telephone Line from Wall
Jack to Line Connection
Fax Connection OK
Please Check Setting of Tone/Pulse
in Admin Menu after Restart Printer
Description
The telephone line cord is not connected. Make sure that the
telephone line cord is securely connected.
The telephone line cord is connected to the wrong connector. Make
sure that the telephone line cord is connected at one end to the wall
( )
jack connector of your printer and at the other end to an active
wall jack. If you use a telephone or answering machine, connect to the
( )
phone connector .
The telephone line cord is properly connected. Check the Tone/Pulse
setting. For information on Tone/Pulse setting, see "Available Fax
Settings Options."
353
Faxing