Lexmark C912 Service Manual - Page 168

5055-xxx High-capacity feeder tests High-Capacity Paper Feed Test Test paper feed operation. 1. Turn on the docking safety switch with a non-metallic object. The interface cable with the printer controller board need not be connected. 2. Close the top cover or manually activate the cover switch. 3. Load paper. 4. Wait until the paper tray stops and the pickup solenoid turns off 5. With the cover closed or with the cover switch activated, press and hold the tray down button for more than 1/2 second. In steps 1 and 2, paper feeding starts and is continuously fed until the cover is opened. The test ends when the tray motor stops and the paper ejects or the tray down button is released. Test sequence 1. The tray motor moves the tray to the upper limit. 2. The pickup solenoid activates then de-activates. 3. When the tray down switch is pressed for longer than 1/2 second, the paper feed motor starts, the paper feed clutch operates and feeding begins. 4. Feeding can be stopped by releasing the tray down button. 3-18 Service Manual