Lexmark C510 Service Manual - Page 142
-Duplex connection error 2 service check, controller board cover.
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5021-0XX 986-Duplex connection error 2 service check Step Questions / actions Yes No 1 Check duplex unit cable. is Replace duplex Properly connect cable properly connected? unit. See cable. If problem "Duplex unit persists, go to assembly step 2. removal" on page 4-13. If problem persists, go to step 2. 2 Check cable connection to Go to step 3. connector DPCN located on engine controller board. See "Engine controller board removal" on page 4-55 for steps required to remove engine controller board cover. This will allow access to DPCN. Is cable properly connected? Properly connect cable. If problem persists, go to step 3. 3 Disconnect cable and Replace engine Replace faulty check for continuity controller board. cable. between DPCN connector See "Engine and duplex connector controller located on back of printer. board removal" Is there continuity? on page 4-55. 2-64 Service Manual
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