Lexmark C750 Service Manual - Page 162

5060-00x High-capacity input tray (HCIT) 2000-sheet option service check HCIT system board LED error code table If a failure is detected by the system board, an error code may be displayed. If the system board LED is on solid, the HCIT detects that the tray or side door is not closed. The LED on the system board may blink. Count the number of times the LED blinks and use the following table to determine the problem. LED blinks 1 2 3 4 5 6 7 8 9 10 11 12 Problem Jam at registration sensor S2 Jam before the leading edge of the paper reaches the registration sensor S2 Paper jam is still detected in the HCIT after removing the jam Paper jam is still detected even with front of jam door closed Paper jam detected at pick sensor Error detected with the tray Error detected at the registration roller home position Error detected at the pick roller home position sensor (S1) Error detected with the lift motor-no motor lock or loss of lock Not used Communication error Other error-failure of the adjustment of the mirror reflection sensors or EEPROM initialization Printer does not recognize that the HCIT 2000-sheet option is installed. Step 1 2 Action and questions Is the HCIT 2000-sheet option the only paper input option that is not recognized? Make sure that the printer and any option above the HCIT 2000-sheet option are installed correctly. Are the printer and any options installed correctly? 3 Check for correct installation of the lower options autoconnect cable to engine board connector J5. Is the cable to J5 installed correctly? Go to step 4 Yes Go to step 5 Go to step 3 No Go to step 2 Install the options correctly and recheck performance Install the cable correctly and recheck performance 2-128 Service Manual