Lexmark C520 Service Manual - Page 58

5022-xxx 920.13-POST (power on self test) error service check Step Questions / actions Yes No 1 Turn the printer off, and remove the rear cover. Check the connector JCART1 for proper connection to the system card, the cable for pinch points, and the cable or connector for any other damage. Is the cable damaged? 2 Remove the right cover. Check for the following continuity between JCART1 and top cartridge connector. Pin 1 Replace the JCART1 cable. The cable parts packet contains one cartridge motor cable that works for either of the cartridge motors. Go to step 3. Go to step 2. Replace the JCART1 cable. The cable parts packet contains one cartridge motor cable that works for either of the cartridge motors. Pin 3 Pin 2 Pin 1 JCART1 Pin 1 Pin 2 Pin 3 To cartridge motor connector Pin 1 Pin 2 Pin 3 Is continuity present? 3 Replace the EP drive assembly. See Problem solved. "Electrophotographic (EP) drive assembly removal-model C52x only" on page 4-48 or "Electrophotographic (EP) drive assembly removal-model C53x only" on page 4-51. Does the error clear? Replace the system card. See "System card removal" on page 4-79. Diagnostic information 2-43