7.4.7. Can not sense when the Cover is Opened.
Symptoms LCD Indicates "Ready" even when cover is opened.
Check and Cause 1. Check if the Hook Lever inside the Duplex Cover is broken or distorted. 2. Check the Cover Open sensor, connectors and cable harness. Ensure that a signal reaches the main PBA 3. Use the EDC mode to test the actuator.
Solution 1. Replace the Duplex Cover.
2. Replace the harness or microswitch as necessary.
3. Replace the Sensor Board.
7.4.8 Defective Motor
Symptoms Main Motor does not work and paper does not feed when printing. Jam 0 is displayed.
Check and Cause 1. Check if the Motor Harness or Motor PCB is broken or not. 2. Test the Motor using EDC Mode.
Solution 1. Replace the Motor or Motor Harness.
2. Replace the Main PBA.
7.4.9 No Power
Symptoms Power is not supplied to the set, or the LCD display is not on.
Check and Cause 1. Check the power supply input and DC voltage output from the SMPS. Check the fuses in the SMPS. Check the wall socket. 2. If the SMPS supply is OK, and the LCD still does not work check the display connectors and cable harness 3. Check if +24VDC or other Power Supplies are shorted out.
Solution 1. Replace the Power Cable. Replace SMPS fuses. If the fault recurs replace the SMPS.
2. Replace cables or LCD Panel Ass'y. Replace the Main PBA. 3. Replace the components used for +24VDC.
