Xerox 8500DN Service Manual - Page 135

Service Diagnostic Control Panel Button Descriptions General Troubleshooting Button Function Back Cancel Help Up Down OK Returns to the prior higher level menu structure, if available. Cancels the display of test results on the Control Panel. If help text is displayed on the Control Panel, pressing BACK will restore the current menu item and remove the help text. Cancels certain functions of the printer. Provides help information, if available. Press any key to advance through the help text. Scrolls up one menu item within a menu list. This control does not 'wrap'. Used to increment data in tests requiring user input. Scrolls down one menu item within test results. This control does not 'wrap'. Enters the highlighted menu. Executes the current test item. NOTE Pressing any key may cause an abort if allowed by the test being performed. A power cycle is used to arbitrarily stop a test. Service Diagnostics Mode Menu This mode can be entered from the Hidden Service Menu. All diagnostics are available in this mode. The printer reboots after entering or exiting all diagnostic modes. The printer will keep the printer thermals hot during diagnostics to avoid unnecessary cleaning cycles. If a diagnostic test runs into a problem while initializing the heaters a message will display, "Test Fault, can't warm up - press any button", you can still continue to run diagnostics under this condition. Note If the heaters are On while entering diagnostics, they will remain On while diagnostics are being run. If the heaters are Off while entering diagnostics, they will remain Off. Utilize the Exercise Heaters function if it is necessary to turn On/Off the heaters. Phaser 8400/8500/8550/8560 Color Printer Service Manual 4-5