Thank you for your feedback

How to Disable V.34 Modulation on the Lexmark X560n MFP

Document ID:SO4390

Usergroup :External


v.34; Modulation; 34 modulation; v.34 modulation


Information article: Turning off the V.34 modulation; How do I turn off v.34 modulation?; Turning off v.34 modulation; Disable v.34 modulation



This article outlines the steps for disabling V.34 modulation on the Lexmark X560n MFP.

What is V.34 Modulation?

V.34 defines the modulation methods and operating sequences for a modem used on General Switched Telephone Networks (GSTNs) and on point-to-point two-wire leased telephone-type circuits.

Steps for Disabling V.34 Modulation

1Enter Service Mode (click here for instructions) and select Fax/Scanner Diag.
2Press thearrow until the * symbol is next to Parameter, and press OK.
3Using thearrow to change the value and the  arrow to change the digit, change the Chain Link number to 825-658. Press OK
4The value will be set to 01, indicating that it is enabled; change it to 00 and press OK.
5Press Stop three times.
6Select Complete, and press OK to save the values.
7Press OK to exit the Parameter menu; at this point the printer will restart and become ready for printing.

Still Have Questions?

If you need additional assistance, please contact Lexmark Technical Support.  When calling for service you will be asked for your printer model type and serial number.  For help locating this information, click here.
Please call from near the printer in case the technician asks you to perform a task involving the printer.

Please enter the email address you would like to send a copy of this page to.