Lexmark 25XX-100 Service Manual page 61

25XX-100, -110
Step Questions/actions
8 Replace the LAN card.
Did this fix the problem?
9 Check the cable
connected to CN15 on
the main board.
Is the cable connected
properly?
10 Perform a continuity
check on the USB cable
connecting the LAN
card and the main
board.
Is there continuity?
11 Replace the LAN USB
cable.
Did the problem go
away?
12 Check pin 1 on CN15 of
the main board for +5V
DC, and pin 4 for
ground.
Are the readings
correct?
13 Perform a print test. See
"Print test" on
page
Did the job print?
3-3.
Yes
Problem solved.
Go to step 10.
Go to step 12.
Problem solved.
Replace LAN
card.
Go to step 6.
Diagnostic information
No
Replace the
main board.
Properly
connect the
cables.
Go to step 11.
Go to step 12.
Replace main
board.
Go to START.
See "Print test"
on page 3-3.
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