Lexmark Pro5500 Series, Service Manual

Page: 121 / 277

Diagnostic information
2-78
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No display service check
No network service check
Step Check Yes No
1 Check if the printer motors initialize during POST. Check if
the system board and power supply LEDs light up.
Do the printer motors initialize during POST?
Go to step 2. Go to “No
power service
check” on
page 2-79
.
2
Check the J14 connector on the system card. Reseat the
J14 cable. Check for any damage on the J14 cable.
Is the J14 cable free from damage?
Go to step 3. Go to step 5.
3
Replace the card reader board. See “Card reader
removal” on page 4-40 .
Does the problem remain?
Go to step 4. Problem
resolved
4
Replace the control panel assembly. See “Control panel
assembly removal” on page 4-35 .
Does the problem remain?
Replace the
system board.
See
“System
board
removal” on
page 4-32
.
Problem
resolved
Step Check Yes No
1 Check the network port on the system board for any
damage. Make sure that the LAN cables are
working properly.
Is the network port free from damage?
Go to step 2. Go to step 4.
2 Check the J37 USB cable on the system board for
proper connection.
Is the J37 USB cable properly connected?
Go to step 3. Reseat the J37 USB
cable.
3 Check the wireless card for any damage and for
proper connection.
Is the wireless card free from damage?
Go to step 4. Go to step 5.
4 Replace the system board. See “System board
removal” on page 4-32 .
Does the problem remain?
Go to step 5. Problem resolved
5 Replace the wireless card. See “Wireless card
removal” on page 4-38 .
Does the problem remain?
Go to step 5. Replace the printer.