Lexmark C782 Service Manual - Page 125
Envelope feeder option service check
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5061 Envelope feeder option service check Note: Except for the tray and pick tires, the envelope feeder option is a complete assembly with no other internal parts that can be replaced. If a 24x.xx paper jam is displayed, go to the appropriate service check: • 242.xx-go to "Envelope feeder" on page 2-40 • 243.xx-go to "Envelope feeder" on page 2-45 The printer does not recognize that the envelope feeder option is installed Step 1 2 Actions and questions Is the envelope feeder option the only option that is not recognized? Are the other options that are not recognized installed below the envelope feeder? 3 Make sure the printer and any option installed above the envelope feeder option is installed correctly. Is the option installed above the envelope feeder installed correctly? Yes Go to step 2 Replace the envelope feeder option. Go to step 4 4 Check for the correct installation of the lower options Go to step 5 autoconnect cable for the system board connector J20. Is the cable installed correctly? 5 Autoconnect cable-Check the autoconnect from the printer or option installed above the envelope feeder. Check for cuts, pinched wiring, or damage to the contacts in the connector. 6 Disconnect the autoconnect cable from J20 on the printer system board. Measure the voltages on J20, the voltages are approximate values and should measure: Connector pin Voltage J20-1 +24 V dc J20-2 Ground J20-4 +5 V dc J20-5 +5 V dc J20-7 +5 V dc J20-8 +5 V dc Are the voltages correct? 7 Check continuity of the autoconnect cable. Is there continuity? Go to the service check for the option mounted above the envelope feeder. Go to step 7 Replace the envelope feeder option. No Go to step 6 Go to step 3 Install the printer or options correctly, and recheck performance. Install the cable correctly, and recheck performance. Replace the envelope feeder. Replace the system board. Replace the autoconnect cable. Diagnostic information 2-83