HP ScanJet Pro 4500 fn1 - Manual (Page 52)

Paper feed issues
Paper jamming, skewing, misfeeds, or multiple-page feeds
● Scanning damp or wet pages can cause paper jams. Make sure that the pages being fed are completely
dry (toner is dry, there are no wet substances such as glue or correction fluid).
● Check that all rollers are in place and that the roller door and document feeder hatch are closed.
● If the pages look skewed as they feed into the scanner paper path, check the resulting scanned images
in the software to ensure that they are not skewed.
● The pages might not be placed correctly. Straighten the pages and adjust the paper guides to center the
stack.
● The paper guides must be touching the sides of the paper stack to work properly. Please ensure that the
paper stack is straight and the guides are against the paper stack.
● The document feeder or output tray might contain more than the maximum number of pages. Load
fewer pages in the document feeder, and remove pages from the output tray.
● Clean the scanner paper path to help reduce misfeeds. If misfeeds still occur, clean the rollers. If
misfeeds still occur, replace the rollers.
Paper does not feed from the scanner
Reload the pages into the document feeder, ensuring that they make contact with the rollers.
The document feeder hatch might not be securely latched. Open the hatch and then close it, pressing firmly
on both sides to ensure the hatch is closed.
A problem with the scanner hardware might exist. Follow this procedure to test the scanner:
1. Ensure that the power supply is securely connected between the scanner and a live electrical outlet or
surge protector. Check that the green LED on the power supply case is on to verify that the power
supply is functional.
2. If the power supply is connected to a surge protector, ensure that the surge protector is plugged into an
outlet and turned on.
3. Press the Power button to turn off the scanner, disconnect the power supply from the scanner, and then
turn of the computer to which the scanner is connected. Wait 30 seconds, reconnect the power supply
to the scanner, press the Power button to turn on the scanner, and then turn on the computer.
4. Try to rescan.
Automatic document feeder (ADF) does not feed paper
● The automatic document feeder (ADF) access door might not be securely latched. Open the ADF access
door, and then close the door by pressing firmly.
● There might be a problem with the ADF hardware. Use the following procedure to test the ADF:
— Disconnect the USB cable and the power cable from the scanner. Check that the power cable is still
connected to the power source.
— Ensure that the ADF has at least one piece of paper in the input tray.
44 Chapter 5 Solve problems ENWW