Lexmark Pro5500t Service Manual page 75

Step
4 Check if the flatbed scan bar can find its base
position during POST sequence.
Can the scan bar find its base position?
5 Run a scan/copy job, and open the flatbed scanner
cover. Check if all the scan bar LEDs will light up
during the scan/copy job.
Is the scan bar free from any damage?
6 Check if the flatbed scan bar will move to the scan
area when the scan/copy job is running from the
ADF.
Run a scan/copy job from the ADF. When the paper
reaches halfway of the paper path, then open the
ADF assembly. Check if the scan bar is in the scan
area.
Does the scan bar move to the scan area?
7 Check the scan/copy setting. Adjust the paper
setting to the size and type of the original
document.
Is the scan/copy setting correct?
8 Check the J47 cable on the system board for proper
connection and damage. Reseat the cable.
Is the J47 cable free from damage?
9 Check the cable connectors in the interconnect
card for proper connection and damage. Reseat the
cables.
Check any damage on the interconnect card.
Are the cables and the interconnect card free
from damage?
10 Replace the flatbed scanner assembly. See
"Flatbed scanner assembly removal" on
page 4-49.
Does the problem remain?
11 Replace the midframe cover. See
cover removal" on page
Does the problem remain?
12 Replace the ADF assembly. See
removal" on page
Does the problem remain?
13 Replace the system board. See
removal" on page
Does the problem remain?
Check
"Midframe
4-50.
"ADF assembly
4-47.
"System board
4-32.
Marketing Name
Yes
Go to step 5. Go to step 8.
Go to step 6. Go to step 8.
Go to step 7. Go to step 10.
Go to step 8. Correct the scan/copy
setting.
Go to step 9. Go to step 10.
Go to step 10. Do any of the
following:
• If there are cable
damages, then go
to step 12.
• If the interconnect
card is damaged,
then go to step 11.
Go to step 11. Problem resolved
Go to step 12. Problem resolved
Go to step 13. Problem resolved
Replace the Problem resolved
printer.
Diagnostic information
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