Lexmark C782 Service Manual - Page 183

5061 If the image is well developed on the PC drum, but the same plane is missing or faded on the ITU belt, the following components should be checked: • Bell cranks-Check the condition of the bell cranks. • Continuity on the bell crank circuit-Turn the printer off. Using a multimeter, check the continuity between the rear bell crank contact for the failing color and the respective cable on the transfer HVPS board. See "Transfer high voltage power supply (HVPS)" on page 5-20. • Transfer HVPS cable-Make sure that there is no damage to the cable running from the system board to the transfer HVPS board. Verify the connection at both ends. • Transfer HVPS board • Engine board HCIT standalone test mode This test lets you check out and test the HCIT (2000-sheet high capacity Input tray) without removing any option or the base printer mounted above the optional HCIT. Note: During normal operation, the red LED on the HCIT system board blinks on for one second and off for one second. Dip switch settings Do the following steps to set and run the Test/Diagnostic: 1. Use the Dip Switch Settings table to determine the settings (DSW1 thru DSW4) on the HCIT control board for the test you want to run. 2. Turn the HCIT power off by moving the LVPS slide switch to the left position. 3. Press and hold the Push Button Switch PBSW1 while moving the LVPS slide switch to the right position. The red LED on the HCIT control board comes on. 4. Press PBSW1 to feed paper. 5. Press PBSW1 to stop feeding paper. Dip switch settings DSW1 Off Off Off Off On On On On DSW2 Off Off On On Off Off On On DSW3 Off On Off On Off On Off On DSW4 N/A N/A N/A N/A N/A N/A N/A N/A Mode Set for shipping The Mirror Reflection Sensors must be adjusted anytime the sensors are replaced. EEPROM Initialize Not used Paperless Operation Mode Self Operation Mode Standalone Feeding Operation Mode Not used Diagnostic aids 3-5