Tektronix Phaser 740, Руководство по обслуживанию

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Phaser 740 and 750 Color Printers
Multiple-sheet pick
1.
Is the paper in good condition and appropriate for a laser printer? Quality office
laser printer paper works best.
2. Is the printer printing within its environmental specifications?
3.
Ensure the corners or the paper are under the tabs in the corners of the tray.
4.
Clean the pick rollers.
5.
Replace the paper tray.
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.
Are the tray's side paper guides snugly adjusted against the stack of media?
The guides, while not adjustable, should be neither too loose nor too tight.
4.
Is the paper tray damaged or obstructed?
5.
Is there an obstacle blocking the paper path?
6.
Is the media excessively curled?
7.
Is the customer using an appropriate type of media – a type the printer can
handle?
8.
Ensure the corners or the paper are under the tabs in the corners of the tray.
9.
If the paper only skews when feed from the upper tray, replace the left door.
Paper tray indicates 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 on the
paper feeder board? Open the left door to observe the flag in action.
2. Test the sensor using the service tests described in “Phaser 740 service tests” on
page 77 or “Phaser 750 service tests” on page 80.
3. Does the paper feeder, when installed, properly connect to the print engine? Is
the paper feeder’s wiring harness properly connected to the engine control
board (CN20)? (For the Lower Tray Assembly, check connector CN19). Inspect
the wiring harness for defects.
4. Replace the paper feeder.
5. Replace the engine control board.