Lexmark C734dn Service Manual

xviii Service Manual
5026
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Preface
This manual contains maintenance procedures for service personnel. It is divided into the following chapters:
1. General information contains a general description of the printer and the maintenance approach used to
repair it. Special tools and test equipment, as well as general environmental and safety instructions, are
discussed.
2. Diagnostic information contains an error indicator table, symptom tables, and service checks used to
isolate failing field replaceable units (FRUs).
3. Diagnostic aids contains tests and checks used to locate or repeat symptoms of printer problems.
4. Repair information provides instructions for making printer adjustments and removing and installing
FRUs.
5. Connector locations uses illustrations to identify the connector locations and test points on the printer.
6. Preventive maintenance contains the lubrication specifications and recommendations to prevent
problems.
7. Parts catalog contains illustrations and part numbers for individual FRUs.
Appendix A contains service tips and information.
Appendix B contains representative print samples.
Change history
Conventions
Note: A note provides additional information.
Warning: A warning identifies something that might damage the product hardware or software.
There are several types of caution statements:
Revision date Updates
2012/06/11 Added the topic “Print quality—white gapping” on page 2-139.
2012/06/01 Added the topic “Cartridge guide wheel removal” on page 4-54.
2011/11/03 • Added the “Auger drive removal” on page 4-49.
• Added the “Waste toner HV contact assembly removal” on page 4-176.
• Added the “Contact springs kit removal” on page 4-70 with the following sub
removals:
“Charge roll contact spring removal” on page 4-70
“HVPS contact springs removal” on page 4-71
“Torsion spring removal” on page 4-72, which was formerly contact spring removal
• Updated the “Left” on page 7-11 to add the auger drive and shaft and waste toner HV
contact part numbers.
• Updated the illustration for “Left” on page 7-10 to include the auger drive and shaft and
waste toner HV contact.
2011/09/02 Aded PN 40X6351 for the motor drive cable in “Cable parts packet” on page 7-13.
2011/07/11 Updated the table for “Covers” on page 7-3 for the arrangement of the FRU PNs to
coincide with the art.
CAUTION
A caution identifies something that might cause a servicer harm.

Lexmark C734dn Specifications

General

Brand	Lexmark
Model	C734dn
Category	Printer
Language	English