This article outlines the steps for disabling V.34 modulation on the Lexmark X560n MFP.
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.
Step Action 1 Enter Service Mode (click here for instructions) and select Fax/Scanner Diag. 2 Press thearrow until the * symbol is next to Parameter, and press OK. 3 Using thearrow to change the value and the arrow to change the digit, change the Chain Link number to 825-658. Press OK. 4 The value will be set to 01, indicating that it is enabled; change it to 00 and press OK. 5 Press Stop three times. 6 Select Complete, and press OK to save the values. 7 Press OK to exit the Parameter menu; at this point the printer will restart and become ready for printing.
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.