Lexmark C520 Service Manual - Page 55

5022-xxx 920.06-POST (power on self test) error service check Step Questions / actions Yes 1 Replace the paper pick mechanism. See "Paper pick mechanism assembly removal" on page 4-68. Does the error clear? Problem solved. No Replace the system card. See "System card removal" on page 4-79. 920.07-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 JTRAY1 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 Check the transparency sensor for correct mounting. Is the transparency sensor properly mounted in the paper pick mechanism? 3 Replace the paper pick mechanism. See "Paper pick mechanism assembly removal" on page 4-68. Does the error clear? Replace the paper pick mechanism. See "Paper pick mechanism assembly removal" on page 4-68. Go to step 3. Problem solved. Go to step 2. Remove the paper pick mechanism, properly install the transparency sensor, and reinstall the paper pick mechanism. See "Paper pick mechanism assembly removal" on page 4-68. Replace the system card. See "System card removal" on page 4-79. 920.08-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 JFUSER1 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 fuser. See "Fuser removal" on page 4-60. Check the DC autoconnects on both the fuser and the printer for damage. Are the connectors damaged? Replace the fuser cable. Replace the JFUSER1 cable. No Go to step 2. Go to step 3. 2-40 Service Manual