Lexmark X422 Laser MFP Service Manual page 99

Registration - Performs scanner margin adjustments for ADF and
flatbed. Registration can be adjusted automatically or manually.
Manual mode is somewhat difficult; automatic mode is
recommended. Automatic mode finds the top and left edge of paper
from a sample scan and calculates right and bottom margins
settings. A special sheet of colored paper is required for successful
registration of the ADF. This special media is available as a FRU as
well as included with FRUs requiring registration adjustment upon
replacement. The scanner registration process is described in
Chapter 4. See
information.
Feed Tests - Verifies the ADF feeds paper and measures the page
length for specific paper sizes. This test is also used to scan the
entire length of the flatbed.
Note: By indicating paper size, paper length should be within a
specific range (which is used for determining paper jams when
out of range).
While performing the feed test:
•
When paper is detected in the ADF, the paper is fed through
the ADF for the ADF portion of the feed test.
•
When paper is not detected in the ADF, the flatbed CCD
carriage traverses the entire length of the flatbed repeatedly.
Pressing Select or Stop cancels the feed test.
Note: The number of pages through the flatbed and ADF that
passed or failed is displayed at the end of the test.
Sensor test
Allows manual inspection of the following sensors:
•
ADF paper present sensor
•
ADF paper path sensor
•
ADF cover open sensor
•
Flatbed cover open sensor
•
CCD home position sensor
"Scanner registration" on page 4-5
7001–001
for more
Diagnostic aids
3-7