xii Phaser 6121MFP Service ManualManual OrganizationThe Phaser 6121MFP Service Manual contains these sections:Introductory, Safety, and Regulatory Information: This section containsimportant safety information and regulatory requirements.Chapter 1 - General Information: This section contains an overview of theprinter’s operation, configuration, specifications, and consumables.Chapter 2 - Theory of Operation: This section contains detailed functionalinformation on the print engine components.Chapter 3 - Error Codes and Messages: This section provides detailedtroubleshooting procedures for error messages and codes generated by residentdiagnostics.Chapter 4 - General Troubleshooting: Troubleshooting discussions coveringtroubleshooting procedures not associated with a Service Call code or ControlPanel error message.Chapter 5 - Print-Quality Troubleshooting: This section focuses on techniques tocorrect image quality problems associated with the printer output.Chapter 6 - Adjustments and Calibrations: This section provides procedures forthe adjustment of print engine components.Chapter 7 - Cleaning and Maintenance: This section provides periodic cleaningprocedures for the printer.Chapter 8 - Service Parts Disassembly: This section contains removal proceduresfor spare parts listed in the Parts List. A replacement procedure is included whennecessary.Chapter 9 - Parts List: This section contains exploded views of the print engineand optional Field Replaceable Units (FRUs), as well as part numbers for orderableparts.Chapter 10 - Plug/Jack and Wiring Diagrams: This section contains the plug/jacklocations 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.
