The Media Skews Passing Through The Paper Path; Paper Tray Indicates It Is Empty When It Is Not - Xerox 1235DT - Phaser Color Solid Ink Printer Service Manual

The media skews passing through the paper path

1. Make sure that the media is properly installed in the tray.
2.
Does the pick-up roller pick up evenly? Is it clean?
3. Is the paper tray damaged or obstructed?
4. Are the tray's side paper guides snugly adjusted against the stack of media?
The guides should be neither too loose nor too tight.
5.
The problem occur when printing from a different tray?
6. Is there an obstacle blocking the paper path?
7. Is the media excessively curled?
8.
Is the customer using an appropriate type of media – a type the printer can
handle?
9. Ensure the corners or the paper are under the tabs in the corners of the tray.
10.
Replace the paper pick rollers.

Paper tray indicates it is empty when it is not

The procedure for troubleshooting this problem applies to the lower tray
assembly as well.
1. Does the paper empty flag properly interrupt the paper empty sensor?
Remove the paper tray and actuate the paper-empty flag located to the left
of the pick rollers.
2.
Test the sensor using the service tests described in "Switch scan test" on
page 63.
3.
Replace the engine controller board
40 Phaser 1235 Network Color Printer