Lexmark T652 Service Manual - Page 248

4062-XXX • Contents of the EVENT LOG from DIAGNOSTICS. • Configuration information, including printer serial number, controller code level, engine code level, operator panel code level, font versions, and cartridge information. • Default values for the QUALITY MENU settings used to print the pages. HARDWARE TESTS Select the following Hardware Tests from this menu: Panel Test Button Test DRAM Test USB HS Test Mode Panel Test This test automatically toggles each pixel of the touchscreen through every contrast level beginning with the . darkest and on to the brightest. This test continues until you press Stop Button Test The Button Test verifies the operation of the buttons on the operator panel. When you select Button Test, a diagram of the operator panel appears on the panel. When you press a button on the operator panel, the corresponding touchscreen key is emphasized. Touch Back to cancel the test. 3-36 Service Manual