Lexmark C520 Service Manual - Page 78

5022-xxx 3. Diagnostic aids This chapter explains the tests and procedures to identify printer failures and verify repairs have corrected the problem. Accessing service menus There are different test menus that can be accessed during POR to identify problems with the printer. Diagnostics menu 1. Turn off the printer. 2. Press and hold and . The Diagnostics menu group contains the settings and operations used while manufacturing and servicing the printer. See "Diagnostics menu" on page 3-2 for more information. Configuration menu 3. Turn on the printer. 4. Release the buttons when the clock graphic displays. 1. Turn off the printer. 2. Press and hold and . The Configuration menu group contains a set of menus, settings, and operations which are infrequently required by a user. Generally, the options made available in this menu group are used to configure a printer for operation. See "Configuration menu (CONFIG MENU)" on page 3-20 for more information. 3. Turn on the printer. 4. Release the buttons when the clock graphic displays. To run the printer diagnostic tests described in this chapter, you must put the printer in Diagnostics mode. Diagnostic aids 3-1