900.Xx-Firmware Error Service Check - Lexmark Pro5500t Service Manual

4447-20x
Step
3 Check the J1, J2, and J3 connectors on the carrier
card for proper connection and damage.
Reseat the J1, J2, and J3 cables.
Are the cables and connectors free from
damage?
4 Replace the printhead. See
on page
Does the problem remain?
5 Replace the carrier card. See
card removal" on page
Does the problem remain?
6 Replace the printhead carrier cables. See
parts packet" on page
Does the problem remain?
7 Replace the tank receiver assembly. See
receiver assembly with inlet removal" on
page 4-79.
Does the problem remain?
8 Replace the system board. See
removal" on page
Does the problem remain?
9 Replace the print engine assembly. See
engine assembly removal" on page
Does the problem remain?
900.xx—Firmware error service check
Step
1 Disconnect the USB, network, and fax cables from
the system board. Turn off the printer by unplugging
the power cord. Wait for 10 seconds, and turn on
the printer.
Does the problem remain?
2 Check all the cables on the system card for proper
connection.
Are all the cables properly connected?
3 Check the J28 cable and connector for proper
connection and any damage.
Is the J28 properly connected and free from any
damage?
2-63
Service Manual
Check
"Printhead removal"
4-73.
"Printhead carrier
4-67.
7-8.
"System board
4-32.
Check
Yes
Go to step 4.
Go to step 5.
Go to step 5.
"Cable Go to step 7.
"Tank Go to step 8.
Go to step 9.
"Print Replace the
4-84. printer.
Yes
Go to step 2.
Go to step 3.
Go to step 4.
No
Do any of the
following:
• If the cables are
damaged, then go
to step 6.
• If the connectors
are damaged, then
go to step 5.
Problem resolved
Problem resolved
Problem resolved
Problem resolved
Problem resolved
Problem resolved
No
Problem resolved
Reseat all cables.
Go to step 6.
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