Lexmark C782 Service Manual - Page 44

5061 POR (Power-On Reset) sequence The following is an example of the events that occur during the POR sequence for the base machine with no paper handling options installed. 1. Power the machine on. 2. +5 V LED (Power ON) on the system board comes on. 3. Fans turn on. 4. The operator panel LED comes on solid. 5. While loading code, dots scroll across the display. 6. The following is an example of the screen that displays after the code is loaded. 256MB 800Mhz Where xxxMB displays the installed memory and xxxMhz indicates the processor speed. 7. The image of a clock face appears on the display. 8. The heartbeat LED on system boards turns on. 9. Color calibration may be initiated. This is displayed if one of the following occurs: • The printer detects at power on, or the front cover assembly is closed, that a new or different toner cartridge has been installed. • The printer detects at power on when the cover is closed that a new or different ITU has been installed. • The printer detects at power on that the fuser temperature is below 60° C. • When coming out of power saver if power saver has been active for eight hours or longer. • If the printer is turned on when a calibration cycle was in progress since the printer was last powered off. 10. The redrive exit roller turns. 11. Ready is displayed. Various messages may appear during this sequence or immediately after. For example: • ITU Missing is posted if the ITU is missing. • Fuser Missing is posted if the fuser is missing. • Close Door is posted if the front cover assembly is open. • Any cartridge errors are posted such as a defective cartridge, Return Program information, or missing cartridge. • Any applicable maintenance messages display such as 80 Fuser Maintenance or 83 ITU Maintenance. • One of the toner low messages appears when applicable: 88 Yellow Toner Low, 88 Magenta Toner Low, 88 Cyan Toner Low, or 88 Black Toner Low. 2-2 Service Manual