Repair Analysis Procedures
Phaser® 3500 Laser Printer Service Manual
2-3
Using the Troubleshooting Procedures
1. Each Step in a Troubleshooting Procedure instructs you to perform a certain action or 
procedure. The steps are to be followed sequentially until the problem is fixed or resolved.
2. The Actions and Questions box contains additional information and/or additional 
procedures you must follow to isolate the problem.
3. When a procedure instructs you to test a component using service diagnostics, see the 
Service Diagnostics Menu Map on page 2-5 for the detailed steps and functions for testing 
parts of the printer. 
4. The action is followed by a question. If your response to the question is “Yes ”, then follow 
the instructions for a “Yes ” reply. If your response to the question is “No”, then follow the 
instructions for a “No” reply.
5. Troubleshooting Procedures may ask you to take voltage readings or test for continuity at 
certain test points within the printer. For detailed diagrams, see Section 7, Wiring Data on 
page 7-1 for complete information on test point locations and signal names. 
6. Troubleshooting Procedures often ask you to replace a printer component, see Repairs and 
Adjustments on page 4-1 for detailed steps in removing and replacing all major 
components of the printer.  Section 5, Parts List on page 5-1, details the location, quantity, 
and part number for all spared printer components.