7-8
A-61159 May 2002
Problem Solving
Occasionally, you may experience a problem with your scanner.
In many cases, you can easily fix the problem yourself. Try the
solutions in the order in which they appear. To perform suggested
maintenance or diagnostic tasks, refer to Chapter 5, Maintenance,
or Chapter 6, Diagnostics.
Problem
Possible Solution
The scanner will not scan/
feed documents
Make sure that:
• the power cord is plugged in and the power is on.
• the side access door and pod are completely closed.
• the printer access door (Scanner 3520DP or Color Scanner
4500DP) is completely closed.
• the proper power-up sequence was followed and the software has
enabled scanning.
• the top green indicator light on the front panel is on.
• documents are making contact with the feed module.
• the height of batched documents is less than:
15.2 mm (0.6 in.) on a scanner using the Feed Module 150.
25.3 mm (1.0 in.) on a scanner using the Feed Module 250.
• for documents stacked near the maximum heights listed above, you
position the batch 12.7 mm (0.5 in.) away from the baffle housing.
• documents meet specifications for size, weight, and height of
batched documents, etc.
• for thicker documents, you press the gap release button
during feeding.
• you check the feed module and separator roller for signs of wear,
and replace these parts if necessary.
• you try to scan a document using the Diagnostic Software.
Image quality is poor or
has decreased
Make sure that:
• the lamps have been on at least three minutes.
• the scanner is calibrated (refer to “Calibrating the Scanner” in
Chapter 6, Diagnostics).
• the imaging guides are clean (refer to “Imaging Guides” in Chapter
5, Maintenance).
• you use the Diagnostic Software to scan a document using different
settings to see if image quality improves.
If unsatisfactory image quality persists, or if the scanner fails
calibration, replace the lamps (refer to “Lamps” in Chapter 5,
Maintenance). Be sure to calibrate the scanner after installing the
new lamps. Make sure that the new lamps have been on at least
three minutes before you calibrate.
