Lexmark T620 Service Manual - Page 154

4069-5XX/7XX Printer does not recognize StapleSmart Finisher option as being installed. FRU 1 StapleSmart Finisher Option 2 Stapler Motor/Drive Assembly Stapler Card Assembly Action Ensure that the StapleSmart finisher is the only option that is not recognized by the base printer. If the finisher is the only option not recognized by the printer continue with step 2. If not, check the autoconnects of the options not recognized and the interconnect board and cable connectors. Check the autoconnects for signs of damage, especially the connector pins. Remove the right side cover and check the cables at J1A, J1B (bottom autoconnect) J14A, J14B (top autoconnect) to the stapler card assembly to make sure they are attached securely. Check the voltages at the printer top autoconnect. If incorrect, remove the finisher option and go to "Autoconnect - Top" on page 5-11. If voltages are correct, reinstall the finisher option and check the voltages at J1A and J1B on the connector. If correct, replace the stapler card assembly. If incorrect, replace the stapler motor/ drive mechanical assembly. 2-126 Service Manual