Toshiba e-STUDIO500P manual Paper feed service check, Double feeding paper

Paper feed service check

If you have a 936 Transport Motor Error go to “Main drive service check” on page 2-105.

	FRU	Action
1	Alignment assembly	Check to ensure the alignment assembly is correctly attached to the
		left side frame and the mounting screws are tight. Check the
		alignment assembly for worn rollers, contaminated rollers, or binds.
		Replace the alignment assembly if any problem is found.
2	Inner deflector	Check the inner paper deflector for correct installation. If the deflector
		is bowed or not fitting correctly, replace the deflector.

Autocompensator fails to feed paper. Failures occur randomly throughout the stack of paper

	FRU	Action
1	Pass thru sensor	Check the pass thru sensor for correct installation and operation.
2	Autocompensator	The autocompensator pick roll shaft assembly is not providing
	assembly	enough torque if the pick rollers are not picking the paper correctly.
		Replace the autocompensator assembly.
3	Wear strips in tray x	Check the wear strips for excessive wear, scratches, or rough spots.
	problem is found.	Replace the wear strips if a problem is found.

Paper feed failures occur only near the top of the stack of paper

The most common cause of this problem is paper curl. Remove the paper from tray x and check for the natural curvature in the paper. Reinstall the paper in the correct manner. If the problem persists, it may be necessary to reduce the stack height. Replace both pick rolls if the paper appears to be flat in the tray but there is still a problem.

Failures occur mainly near the bottom of the stack of paper

The autocompensator pick arm may not be coming down far enough to allow the pick rolls to properly contact the paper. Also the autocompensator motor may be failing. If this problem continues replace the autocompensator assembly.

Double feeding paper

Note: If double feeding paper occurs mostly from the bottom of the stack, check for missing or damaged restraint pads in the tray.

		FRU	Action
	1	Paper	Paper is usually the primary cause of a double feeding paper
			problem. Flex the paper before placing the paper in the tray. Edge-
			welded paper is the most common cause of double feeding. Loading
			the paper in the tray in different locations and directions and using
			rough paper and short grain paper also causes double feeding.
	2	Autocompensator	Make sure the counterbalance spring is not missing, loose, or broken
			at the top of the autocompensator arm assembly. If you find a
			problem, replace the autocompensator assembly.
2-112Service Manual