Lexmark T620 Service Manual - Page 149

4069-5XX/7XX Smart Cartridge Contact Assembly Service Check Note: If you are unable to clear a "32-Unsupported Cartridge" User Error Message, make sure a Lexmark T print cartridge is correctly installed in the printer. The cartridge is easily identified by the contact board located on the right side rear of the cartridge. Install another print cartridge before attempting to troubleshoot the printer. Check to make sure the smart contact assembly cable is properly connected to J20 on the system board. Check the print cartridge for any signs of damage or improper installation of the smart chip. Also check to make sure there is proper contact between the smart chip on the cartridge and the smart cartridge contact assembly. Service Tip: An intermittent "32-Unsupported Cartridge" User Error Message can be caused by poor contact between the smart cartridge contacts in the printer and the smart chip. Also check for proper seating of the smart cartridge cable to the system board. FRU 1 Smart Cartridge Contact Assembly System Board Action Check the voltage on the smart cartridge contact. The voltage measures approximately +3.8 V dc when not writing data to the system board. If data is being written, the voltage measures approximately 0 V dc. If incorrect, disconnect the cable from J20 on the system board and check the voltage on J20-1. The voltage measures approximately +5 V dc. If incorrect, replace the system board. If correct, replace the smart cartridge contact assembly. Diagnostic Information 2-121