Lexmark 5016-001 manual Be sure the mounting screws in the Hvps are

5016-001

	FRU	Action
4	HVPS	Be sure the mounting screws in the HVPS are
	Grid Block 1	tight and the HVPS board is correctly seated
	Grid Block 2	against the high voltage contacts of grid block 2.
		Examine the contacts on grid blocks 1 and 2 for
		signs of contamination or damage. grid block 1
		supplies the necessary high voltages to the print
		cartridges and ITM Unit, while grid block 2
		supplies the high voltage to the ITM and
		Transfer Roll.
		Examine the HVPS board for signs of damage,
		especially to the jumpers that contact the grid
		block high voltage contacts.
5	Fuser	Check the hot roll and backup roll for signs of
		damage or heavy contamination.
		• If a problem is found, repair or replace the
		fuser assembly.
		• If no problem is found, check the discharge
		brush for buildup, replacing it if a problem is
		found.
6	Printhead	Dirt or dust on the lens or mirrors in the
		printhead can cause this problem. After all other
		checks have been made, replace the printhead
		assembly.

Diagnostic Information 2-93