Resource Guide to Fax Troubleshooting Topics and Other Fax Related Information (Dec.'09)


This fax table of contents may help you locate a fax-related KnowledgeBase article.

It is updated frequently; however, it is still advisable that you perform multiple searches with multiple search terms.

If you are unable to find the topic of interest below, also consider referencing the User's Guide for your MFP.

Topics have been categorized as follows:




Topics in bold are recent or most frequently used.

Article Link
Fax Problems or Issues with Digital Phone Lines; Voice Over Internet Protocol Fax Issuesxref_SO5072_xref
Fax Troubleshooting with Auto Answer, Distinctive Ring, Enable Manual Fax Settings: Fax Solutions for the Lexmark X204, X26x, X36x and X54x MFPsxref_SO4883_xref

Main Contributing Factors to Fax Receive Failure: Enable Fax Receive, Distinctive Ring, Noisy Line and Others

How to Enable Fax Receive, Change Distinctive Ring Settings and Adjust Fax Receive Ratesxref_HO3513_xref
How to Prevent Junk Faxes on Any Touch Screen MFP or AIO; How to Add Phone Numbers to the Banned Fax List


Failure of 'Home Screen Customization' Setting to 'Display' Function Icon on Lexmark X65x or X46x MFPxref_HO3494_xref
Exclamation Mark over the Fax Icon and a Flashing 'Red' or Solid 'Green' Light on the X65x, X45x Series Multifunction Printersxref_SO4777_xref
Lexmark X204n Holds Faxes Until Power Cycle and Other Fax Behavior Anomalies xref_SO5073_xref
Faxless X651e and Related Products: How to Remove the Red Flashing LED and Exclamation Point over Fax Iconxref_SO4750_xref
Error: rootquotescaped900.43 Service RIP Softwarerootquotescaped receiving Faxes with the X64xe, X85xe, X94xe, X782xe, or 4600 Scanner-Equipped MFPsxref_SO3577_xref
900.94 Message Displayed on the Lexmark X203 and X204 MFP xref_SO5404_xref

Corrupt Fax Data Generates a 900.94 Firmware Error on the Lexmark X462, X464 and X466 MFPs

Intermittent Fax Forwarding Issue on X64xe, X85xe, X94xe, X782xe, or 4600 Scanner-Equipped MFPsxref_SO4668_xref
Memory Full or Intervention Request Messages Can Prevent X64xe, X85xe, X95xe, X646ef Fax Functionality; Further Suggestions Require Contacting Lexmark Technical Supportxref_HO3286_xref
Incoming Fax Not Displayed in Full on the Page on the X644e and X646exref_SO3826_xref
Fax Receive rootquotescapedNo Answerrootquotescaped: Possible Firmware Update and Post Code Update Check for Non-US Geographies (If Fax Still Fails)xref_SO4185_xref
Incoming Faxes Still Ring After the Speaker Is Turned Off on X342 MFPxref_SO3654_xref
Fax Errors When the X34X Multifunction Printer Is Powered Onxref_SO3568_xref
Poor Quality Faxes at Receiving Endxref_FA555_xref
How to Enable the Fax on the X215


Faxes Will Not Print After a New Cartridge Is Installed on the X215xref_SO3640_xref
Error 033-762 When Receiving a Fax on the Lexmark X560n MFPxref_SO4446_xref
Simplex Fax Is Run as a Duplex Through the ADF (X64x, X65x and affiliated MFPs)xref_SO4030_xref

'How to' information

Topic Article Link
Fax Server Mode: Concepts and Configurationxref_HO3482_xref
How to Disable or Enable Primary Functions/Features via Initial Setup Wizard and the Effects on Visible Home Screen Iconsxref_HO3496_xref
How to Enable Fax Feature If Fax Card Is Added to a Faxless Lexmark X46x and X65x Series MFP: Turn Your 3-in-1 into a 4-in-1MFPxref_HO3497_xref
Auto Print Logs: How to Activate a Snapshot of the Most Recent Fax Activity and Behaviorxref_HO3464_xref
How to Disable V.34 Modulation on the Lexmark X560n MFPxref_SO4390_xref
How to Set Up Fax Forwarding on the X644e, X646e, and X85X Multifunction Printers xref_HO3117_xref
How to Use the rootquotescapedTo Formatrootquotescaped Setting in the Fax Server Setup on the X64X and X85X MFPxref_HO2718_xref
How to Prevent Junk Faxes on Any Touch Screen MFP or AIO; How to Add Phone Numbers to the Banned Fax Listxref_HO3462_xref

General information

Topic Article Link
Firmware Update Release Notes for X65xe Series MFPs: Enhancements and Added Functionality (Jan. '09)xref_RE107_xref
Common Embedded Web Server Settings for MFPsxref_SO4541_xref
Fax Forward Function Generates PDFs on the X644e, X646e and X85Xexref_SO3827_xref
What is the Maximum Number of Shortcuts That Can Be Used on the X64X and X85X Multifunction Printers?xref_SO3681_xref
Which Fax Servers Are Supported? xref_FA18_xref

Last Resort Suggestion if Faxing Using Voice Over Internet Protocol (VOIP)

User Interface Reverts to Home Screen After Flatbed Cover Is Opened and Closed on the X642e MFP xref_SO4182_xref
Explanation of the Date Format on the Fax Header of the Lexmark X646e MFPxref_S04417_xref

Downloadable Content

If ALL fax diagnosis steps have been exhausted, the information within the following documents will be necessary to escalate the issue to Lexmark's next level of support.


The following documents provide instructions on capturing required fax pre-escalation data.

Once all information is obtained, please call Lexmark Technical Support

for further assistance.

Important! The accuracy of the information you provide is critical to successful diagnosis and expedient fix suggestions.

Lexmark's fax engineering team requires a full explanation of all attempted tests and countermeasures performed to alleviate the fax issue.


MFP ModelsDocument for download
Fax Troubleshooting and Escalation EssentialsX64x, X65x, X73x, X46x, X85x, X864, X94x, and 4600 scanner-equipped products.Click here
Fax Escalation Form REQUIREDAll productsClick here
Fax Escalation Guide
  • X422 MFP
  • MFPs with the following scanner machine/model numbers
    • 4036-301
    • 4036-302
    • 4036-304
    • 4036-305
    • 4036-306
    • 4036-501
Click here

Still Need Help?

If you need additional assistance, please contactLexmark Technical Support. NOTE: When calling for support, you will be asked for your printer model type and serial number (SN). Please call from near the computer and printer in case the technician on the phone asks you to perform a task involving one of these devices.


Was this article helpful?