Lexmark T632 Service Manual - Page 78

4060-xxx Cover closed switch/cable service check FRU 1 Toner cartridge 2 Cover closed switch/cable assembly Action Make sure the toner cartridge is correctly installed and that the right and left cartridge tracks are not loose or broken. Make sure the cover closed switch activation tab on the toner cartridge is not broken and that the tab correctly activates the cover closed switch spring. Check the cover closed switch for proper mechanical operation. If incorrect, repair as necessary. Disconnect the cover closed switch cable from J3 at the system board and measure the voltage at J3-3. It measures approximately +5 V dc. If the voltage is incorrect, replace the system board. If the voltage is correct, check the voltage at J3-1. If the voltage measures greater than +1.0 V dc, replace the system board. If the voltage is correct, check the continuity between J3-1 and J3-3 on the cable. If no change in continuity occurs as the switch is activated, replace the cover open switch/cable assembly. If the continuity changes as the switch is activated, replace the system board. Cover closed switch table J3 Pin number Pin 1-3 Pin 1-2 Switch status Cover open Open Closed Cover closed Closed Open 2-44 Service Manual