HP LaserJet 9040/9050 Service Manual - Page 70

Diagnostics menu Administrators can use this menu to troubleshoot jam and print-quality issues. Item Values Explanation PRINT EVENT LOG Generates a localized LIFO (last in, first out) list of the 50 most recent entries in the error log. The printed event log shows error number, page count, error code, and description or personality. SHOW EVENT LOG Allows the user to scroll through the contents of the event log from the printer control panel, and shows the 50 most recent events. Use and to scroll through the event log contents. PAPER PATH TEST PRINT TEST PAGE Generates a test page that is useful for testing the paper-handling features of the printer. SOURCE=TRAY 2 Specifies if paper from all of the trays or from a specific tray is used when the test is performed. DESTINATION= STANDARD OUTPUT Specifies which paper paths are tested. DUPLEX=OFF Specifies if the duplexer is included when the test is performed. COPIES=1 Specifies how many sheets of paper from the specified source are sent when the test is performed. SENSORS=OFF Specifies if sensor information appears as the paper moves through the path or if only the status of the device is appears during the paper path test. SERVICE TEST The engine tests access portions of the printer internal diagnostics that occur when the printer is turned on. These diagnostics are available as tools to help isolate problems that the firmware does not report. See "Service test" on page 213 for more information. Service menu The Service menu is locked. A service technician must type a PIN to open the menu. See "Service menu" on page 215 for more information. 54 Chapter 3 Product configuration