4-2 Phaser 8400 Color PrinterIntroductionThis chapter covers the general start-up, Power On Self Test (POST), and powersupply operations of the printer to aid in troubleshooting problems not associated witha front panel error message or error code. For troubleshooting problems associatedwith an error code or front panel error message, notes on how to use thetroubleshooting procedure tables, and how to use service diagnostics, see Chapter 3"Error Messages and Codes" on page 3-1. The Printer Status page also contains usefultroubleshooting information. This page provides general printer information, lifeinformation for all consumables, printhead cleaning and power cycles, and jam anderror code information.Troubleshooting procedures will isolate a problem to a specific component orsubassembly, in some cases including the wiring harness. If you go through theprocedures in a troubleshooting table and still are unable to solve the problem, re-readthe Theory of Operations for the problem area and ensure that you understand howthat section of the printer is supposed to function.Hidden Service MenuThe Hidden Service Menu provides access to a large group of information pages andfunctions usable for diagnosing and correcting printer malfunctions and accessingspecial features. Display the Hidden Service Menu as follows:1. Press OK and Cancel buttons at the same time to display the Service ToolsMenu.2. With the cursor at the top of the Service Tools Menu, press both the Up Arrowand Down Arrow buttons to display the Hidden Service Menu.Menu Item DescriptionTest Prints See "Analyzing Service Test Prints" on page 5-24 for acomplete explanation of each test print available.Startup Page Prints a page with basic printer configuration andnetworking information.Eliminate Light Stripes Performs a cleaning procedure to remove light stripes inprints; this process will take about 5 minutes.Fault History Displays available information regarding the last 15 faultsreported by a test and/or the print engine.Jam History Displays available information regarding the last 20 Jamsreported by a test and/or the print engine.
