HP 2840 HP Color LaserJet 2820/2830/2840 All-In-One - User Guide - Page 266

Solving scan-quality problems, Clean the ADF glass. See

Page 266 highlights

Solving scan-quality problems Problem Blank pages Too light or dark Unwanted lines Black dots or streaks Unclear text Cause Solution The original might have been loaded upside down. In the automatic document feeder (ADF), put the top end of the stack of originals into the ADF input tray, with the media stack face-up and the first page to be scanned on top of the stack. On the flatbed scanner, place the original document facedown with the upper-left corner of the document at the lowerright corner of the glass. The resolution and color levels may be set incorrectly. Verify that you have the correct resolution and color settings. See Scanner resolution and color. Ink, glue, correction fluid, or an unwanted substance might be on the glass. Clean the flatbed scanner surface. See To clean the scanner glass. The ADF glass might be dirty. Clean the ADF glass. See To clean the scanner glass. Ink, glue, correction fluid, or an unwanted substance might be on the glass. Clean the flatbed scanner surface. See To clean the scanner glass. The resolution and color levels may be set incorrectly. Verify that you have the correct resolution and color settings. See Scanner resolution and color. 250 Chapter 14 Troubleshooting ENWW

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Solving scan-quality problems
Problem
Cause
Solution
Blank pages
The original might have been
loaded upside down.
In the automatic document
feeder (ADF), put the top end
of the stack of originals into the
ADF input tray, with the media
stack face-up and the first page
to be scanned on top of the
stack.
On the flatbed scanner, place
the original document face-
down with the upper-left corner
of the document at the lower-
right corner of the glass.
Too light or dark
The resolution and color levels
may be set incorrectly.
Verify that you have the correct
resolution and color settings.
See
Scanner
resolution
and
color
.
Unwanted lines
Ink, glue, correction fluid, or an
unwanted substance might be
on the glass.
Clean the flatbed scanner
surface. See
To
clean
the
scanner
glass
.
The ADF glass might be dirty.
Clean the ADF glass. See
To
clean
the
scanner
glass
.
Black dots or streaks
Ink, glue, correction fluid, or an
unwanted substance might be
on the glass.
Clean the flatbed scanner
surface. See
To
clean
the
scanner
glass
.
Unclear text
The resolution and color levels
may be set incorrectly.
Verify that you have the correct
resolution and color settings.
See
Scanner
resolution
and
color
.
250
Chapter 14 Troubleshooting
ENWW