Preface; Change History - Lexmark C950 Service Manual

5058-030

Preface

This manual contains maintenance procedures for service personnel. It is divided into the following chapters:
General information contains a general description of the printer and the maintenance approach used to
1.
repair it. Special tools and test equipment, as well as general environmental and safety instructions, are
discussed.
Diagnostic information contains an error indicator table, symptom tables, and service checks used to
2.
isolate failing field replaceable units (FRUs).
3. Diagnostic aids contains tests and checks used to locate or repeat symptoms of printer problems.
Repair information provides instructions for making printer adjustments and removing and installing
4.
FRUs.
Locations uses illustrations to identify the connector locations and test points on the printer.
5.
6. Preventive maintenance contains the lubrication specifications and recommendations to prevent
problems.
Parts catalog contains illustrations and part numbers for individual FRUs.
7.
Appendix A contains service tips and information.
Appendix B contains representative print samples.

Change history

Revision date
2014/01/09
2013/12/05
2013/11/4
2013/10/21
2013/10/7
2013/07/31
2013/07/11
2013/02/26
2012/08/15
2012/08/01
2012/07/02
Service Manual
xxx
Updates
Changed PN 40X0727 to PN 40X6676 for the Sensor (TTM tray 4 feed out) in Assembly 30:
TTM Media feed 2 of the parts catalog.
• Updated description for error code 121.12 to "Fuser failure" from "Incorrect fuser."
• Updated the action description to "Wrong fuser is possibly installed or fuser drive PCBA
has failed" from "Wrong fuser is installed."
• Updated
"121.12 Fuser failure" on page
Parts catalog Assembly 47: Changed P/N 40X6726 to 40X7464.
Parts catalog Assembly 30:
• Updated description of 40X7334
• Added 40X0588
• Deleted 40X7336, 40X7337, and 40X7338
Removed all instances of 40X7512.
• Updated Parts catalog Assembly 30.
• Added "Steps before starting the 9yy service checks".
• Updated the Bridge PCBA (SFP) part number.
• Added the following error codes and service checks: 146, 324, 334, 344, and 354.
Updated Assembly 11 of the parts catalog to show the proper order of the augers.
Replaced part number 40X7421 to 40X8663 in
of the parts catalog.
Updaed the Bridge PCBA (SFP) part number in
catalog.
Added part number 40X0580 in
7-24, and
1" on page "TTM trays" on page 7-29
2-51.
"Finisher—stacker bin lift" on page 7-64
"Electrical 1" on page 7-48
"Media feed 1" on page 7-20,
in the parts catalog.
of the parts
"Tray module media feed
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