Lexmark C520 Service Manual - Page 61

5022-xxx 920.17-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 JBIN1 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? Replace the top access cover assembly. See "Top access cover assembly removal-model C52x only" on page 4-28 or "Top access cover assembly removal-model C53x only" on page 4-32. Go to step 2. 2 Replace the top access cover assembly. "Top access cover assembly removal-model C52x only" on page 4-28 or "Top access cover assembly removal-model C53x only" on page 4-32. Does the error clear? Problem solved. Replace the system card. See "System card removal" on page 4-79. 920.18-POST (power on self test) error service check Step Questions / actions Yes 1 Turn the printer off, and remove the rear cover. Check the connector JOPT1 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? Replace the option cable. 2 Replace the 500-sheet assembly (C52x models) or the 550-sheet assembly (C53x models). Does the error clear? Problem solved. No Go to step 2. Replace the system card. See "System card removal" on page 4-79. 920.19-POST (power on self test) error service check Models C52x only Step Questions / actions 1 Replace the EP drive assembly. See "Electrophotographic (EP) drive assembly removal-model C52x only" on page 4-48. Does the error clear? Yes Problem solved. No Replace the system card. See "System card removal" on page 4-79. 2-46 Service Manual