xii Phaser 6121MFP Service Manual
Manual Organization
The Phaser 6121MFP Service Manual contains these sections:
Introductory, Safety, and Regulatory Information: This section contains
important safety information and regulatory requirements.
Chapter 1 - General Information: This section contains an overview of the
printer’s operation, configuration, specifications, and consumables.
Chapter 2 - Theory of Operation: This section contains detailed functional
information on the print engine components.
Chapter 3 - Error Codes and Messages: This section provides detailed
troubleshooting procedures for error messages and codes generated by resident
diagnostics.
Chapter 4 - General Troubleshooting: Troubleshooting discussions covering
troubleshooting procedures not associated with a Service Call code or Control
Panel error message.
Chapter 5 - Print-Quality Troubleshooting: This section focuses on techniques to
correct image quality problems associated with the printer output.
Chapter 6 - Adjustments and Calibrations: This section provides procedures for
the adjustment of print engine components.
Chapter 7 - Cleaning and Maintenance: This section provides periodic cleaning
procedures for the printer.
Chapter 8 - Service Parts Disassembly: This section contains removal procedures
for spare parts listed in the Parts List. A replacement procedure is included when
necessary.
Chapter 9 - Parts List: This section contains exploded views of the print engine
and optional Field Replaceable Units (FRUs), as well as part numbers for orderable
parts.
Chapter 10 - Plug/Jack and Wiring Diagrams: This section contains the plug/jack
locations and the wiring diagrams for the printer.
Reference: This section provides an illustration of the printer’s menu structure,
printer firmware update instructions, and a list of acronyms and abbreviations.
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