Lexmark C782 Service Manual - Page 141

5061 Low image density Note: If all colors have a low image density problem, set the Print Darkness to High from the user's menu. • If only one color has a problem, go to "Step A." • If all colors have a problem, go to "Step B." Step A Step 1 Actions and questions Print cartridge-Make sure the print cartridge is seated correctly. Is the print cartridge seated correctly? 2 The print cartridge may be out of toner. Try a new print cartridge. Does a new print cartridge fix the problem? Yes Go to step 2 Problem resolved No Install the print cartridge correctly and recheck. Replace the transfer HVPS board. See "Transfer HVPS board removal" on page 4-91. Step B Step 1 2 Actions and questions Make sure that color calibration has not been disabled in the Diagnostics menus, especially if the printer has been previously serviced. Was color calibration disabled? Toner density calibration-Run toner density calibration from the Utility menu. Does this fix the problem? Yes Set Color Calibration on. No Go to step 2 Problem resolved Replace the transfer HPVS board. See "Transfer HVPS board removal" on page 4-91. Poor color alignment Step 1 2 Actions and questions Print cartridge-Make sure that the print cartridges are properly inserted and are seated properly in their respective V blocks. Are the cartridges seated correctly? Front cover and cartridge contact block-Check the front cover and the cartridge contact block to make sure that all the springs and cartridge hold downs are present and correctly installed. Are all springs and cartridge hold downs present and correctly installed? Yes Go to step 2 Go to step 3 No Install the cartridge(s) correctly. Replace any missing or damaged springs or hold downs. Diagnostic information 2-99