Phaser 6300/6350/6360 Service Manual 4-9General TroubleshootingService Diagnostics UtilitiesThree Service Diagnostics utilities are especially useful for troubleshooting:■ Status■ Test Prints■ Diagnostic Fault HistoryWhat follows is an overview that describes the function and proper applicationof each utility.StatusLocated in the General Status menu, Status reports on the condition of theprinter. Status reports either No Status to Report, or sequentially lists errorconditions occurring since power-up. Conditions that prevent printing arelisted before warnings. Status listings are not stored. If the printer reachesReady, the list is cleared. Some applications of status are:■ Provides an initial condition from boot to begin troubleshooting.■ Captures static or dynamic events.■ Confirms diagnostic test results and subsequent repairs.Test PrintsTest Prints can isolate printing problems to the Engine Control or ImageProcessor Board by eliminating image data transfer between the two. TestPrints does not exercise any Image Processor Board circuitry. Test Prints getsits image data from ROM. This allows the examination of Engine ControlBoard function in isolation.Test Prints is also useful for stimulating asynchronous (dynamic) eventsrelated to the print process, or as a test for paper path and media relatedproblems. Some other key features of Test Prints:■ Is the only diagnostic utility to exercise the entire print cycle.■ Isolated from the operating system (PostScript). Runs from firmware.■ Isolates the Image Processor Board from Engine Control Board.■ Captures static or dynamic events.■ Helps to isolate events that cause print artifacts or prevents printing.Diagnostic Fault HistoryThe Diagnostic Fault History utility records a list of engine-generated errorevents that occur during diagnostic testing. Use this utility to record errorevents that occur while executing tests in Diagnostic Mode. The DiagnosticFault History utility captures asynchronous (transient) events only. For static(continuous), or pre-existing events, rely on the Status utility.
