Lexmark C522 Service Manual - Page 54

5022-xxx 920.04-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 DC autoconnect cable. 3 Check for the following continuity between the Go to step 4. DC autoconnect and FUSER1. pin 6 pin 1 pin 10 pin 8 13579 Pin 2 4 6 8 10 configuration No Go to step 2. Go to step 3. Replace the DC fuser cable. DC autoconnect JFUSER1 DC autoconnect Pin 3 Pin 8 Pin 9 Pin 10 JFUSER1 Pin 3 Pin 8 Pin 9 Pin 10 Is continuity present? 4 Replace the fuser. See "Fuser removal" on page 4-60. Does the error clear? Problem solved. 920.05-POST (power on self test) error service check Step Questions / actions 1 Replace the printhead card. See "Printhead removal" on page 4-74. Does the error clear? Yes Problem solved. Replace the system card. See "System card removal" on page 4-79. No Replace the system card. See "System card removal" on page 4-79. Diagnostic information 2-39