Lexmark C520 Service Manual - Page 60

5022-xxx 920.15-POST (power on self test) error service check Models C52x only Step Questions / actions Yes No 1 Turn the printer off, and remove the rear cover. Check the connector JTRANS1 for proper connection to the system card, the cable for pinch points, and the cable or connector for any other damage. See "System card (network)-models C52x" on page 5-11 for the location of JTRANS1. Is the cable damaged? Replace the front door assembly. See "Front door assembly removal" on page 4-55. Go to step 2. 2 Replace the transfer belt assembly. See "Transfer belt removal" on page 4-91. Does the error clear? Problem solved. Replace the system card. See "System card removal" on page 4-79. Models C53x only Step Questions / actions 1 Turn the printer off, and remove the rear cover. Check the connector JTRANS2 for proper connection to the system card, the cable for pinch points, and the cable or connector for any other damage. See "Connector listing- models C53x" on page 5-19 for the location of JTRANS2. Is the cable damaged? 2 Replace the transfer belt assembly. See "Transfer belt removal" on page 4-91. Does the error clear? Yes Replace the front door assembly See "Front door assembly removal" on page 4-55. Problem solved. No Go to step 2. Replace the system card. See "System card removal" on page 4-79. 920.16-POST (power on self test) error service check Step Questions / actions 1 Turn the printer off, and remove the rear cover. Check the connector JPH1 (large printhead cable) 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 Replace the system card. See "System card removal" on page 4-79. Does the error clear? Yes Replace the printhead. See "Printhead removal" on page 4-74. Problem solved. No Go to step 2. Replace the printhead. See "Printhead removal" on page 4-74. Diagnostic information 2-45