Noise - Canon iR4570 Series Service Manual

[ Inspected by Canon Inc. ]
Field Remedy
In inspection, reinsertion of the ROM corrected the symptoms. If any of the symptoms mentioned above occurs
during installation, reinsert the BOOTROM or the RAM.

14.2.2.2 Noise

14.2.2.2.1 Noise at Time of Pickup from the Cassette
iR2270 / iR2870 / iR3570 / iR4570 / iR3530
<Cause>
When double-feeding occurs at time of pickup, the contact between the sheets and the feed roller and the separation
roller cause the separation roller assembly to vibrate.
<Field Remedy>
Replace the roller with a sponge retard roller (FB5-0873; to be used as needed; cassette only).
14.2.3 Transmission/fax-related
14.2.3.1 Transmission Problem
14.2.3.1.1 Latter half of image is lost when scanning and sending A3-size original from DF
iR2270 / iR2870 / iR3570 / iR4570 / iR3530
[ Inspected by Canon Inc. ]
Description
As a result of inspection, the following was found: When an A3-size original with sharp folds is set in the
document feeder (DF), the machine detects it as A4-size and scans the corresponding area. This is because the
latter half of the original is folded and fails to come into contact with the document length sensor flag on the
DF, consequently preventing the length sensor from detecting the original as large size.
When scanning an original with sharp folds from the DF, remove the folds or place it on the copyboard glass.
Moreover, the use of the Preview button on the LCD before scanning enables you to check whether the full
image of the original is scanned. Please explain these to your customer.
Chapter 14
0007-7052
0009-2432
14-17