Question about HP 4570C Flatbed Scanner
Problems started out to be intermittent and I could solve it by unplugging the power source for 5 - 10 minutes and then restart the scanning. Now the unit will only scan very, very dark or totally black from a white document. I have been to the HP website and followed suggestions they offer, including the "homing" procedure outlined on this site. I have installed the newer version 2.0 software, still no improvement. I have ruled out electromagnetic problems because the scanner has been in the same location since 2004 and nothing has chaged at my desk. I even tried installing the software and connecting the scanner to a completely different model and brand computer; same problems. Great scanner, very reliable and good quality, until now.
It could be one of two things:
1) The scanner isn't registering black or white during the initialization processing depending on what color it needs to get it started.
2) The CCD unit in the scanner could be failing which could explain why it was only working briefly before getting worse.
Posted on Nov 30, 2008
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Posted on Jan 02, 2017
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