Lexmark Pro5500 Series, Service Manual

Page: 67 / 277

Diagnostic information
2-24
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5 Isolate which scan bar is damaged. Run a
scan/copy job from the flatbed scanner.
Is there a problem with the print quality?
Go to “Black
print out from
a simplex
scan/copy
job” on
page 2-22
.
Go to step 6.
6
Check the J45 connector for proper connection and
damage. Reseat the cable.
Is the J45 cable free from damage?
Go to step 7. Go to step 11.
7
Check the J47 cable on the system board for proper
connection and damage. Reseat the cable.
Is the J47 cable free from damage?
Go to step 8. Go to step 12.
8
Check the cable connectors in the interconnect
card for proper installation and for any damage.
Reseat the cables.
Check any damage on the interconnect card.
Are the cables and the interconnect card free
from damage?
Go to step 9. Do any of the
following:
• If there are cable
damages, then go
to step 11.
• If the interconnect
card is damaged,
then go to step 13.
9 Run a duplex scan/copy job.When the paper
reaches halfway of the paper path, then open the
ADF assembly.
Check if the ADF scan bar and LEDs will light up
during the scan/copy job.
Does the ADF scan bar light up?
Go to step 10. Go to step 11.
10 Insert a white clean paper on the ADF tray. Bring
the printer up in Manufacturing mode. From the
home screen, touch
> Manufacturing
Test > Calibrate ADF Scanner .
Run a test print. From the home screen,
touch
> Print Reports > Demonstration
Page .
Does the problem remain?
Go to step 11. Problem resolved
11
Replace the ADF assembly. See “ADF assembly
removal” on page 4-47 .
Does the problem remain?
Go to step 12. Problem resolved
12
Replace the flatbed scanner assembly. See
“Flatbed scanner assembly removal” on
page 4-49
.
Does the problem remain?
Go to step 13. Problem resolved
13 Replace the midframe cover assembly. See
“Midframe cover removal” on page 4-50 .
Does the problem remain?
Go to step 14. Problem resolved
14 Replace the system board. See “System board
removal” on page 4-32 .
Does the problem remain?
Replace the
printer. Problem resolved
Step Check Yes No