Lexmark T620 Service Manual - Page 78

4069-5XX/7XX Dead Machine Service Check Note: If a high-capacity input tray is installed, remove the option and check the base printer for correct operation. If the base printer operates correctly, go to "High-Capacity Feeder Input Tray Service Check" on page 2-72. If the base printer continues to not operate correctly, remove any other attached paper handling options. Observe all necessary ESD precautions when removing and handling the system board or any of the installed option cards or assemblies. Service Tip: When removing the LVPS from the printer observe the following: 1. The LVPS uses a self docking connector that mates with another connector mounted on the left side frame assembly. Some force may be required to pull the LVPS loose from the connector. 2. Gently remove the LVPS supply using caution not to damage the printed circuit board. Pull the LVPS out far enough to reach the fuser lamp cable. 3. The fuser lamp cable uses a locking type of connector system. Unlock the fuser lamp cable connector, disconnect the cable and remove the LVPS from the printer. Note: If the LVPS is blowing fuses, remove the LVPS from the printer. Check the metal LVPS shield for signs of damage that causes the shield to touch components on the LVPS board assembly. FRU 1 Line Voltage 2 AC Line Cord Action Check the AC line voltage. If the line voltage is incorrect, inform the customer. Check the line cord for any signs of damage. If correct, check the continuity of the line cord and replace if necessary. 2-50 Service Manual