Transfer Module Error Service Check; Engine Software Error, Nvram Mgr Problem Service Check - Lexmark C746n Service Manual

5026
900.05—Transfer module error service check
Step Questions / actions
1. Turn the printer off.
1
2. Remove the rear frame cover. See
frame cover removal" on page
3. Check the transport cable in connector
JTPS1 for proper connection to the
system board.
4. Open the front access door and check the
transport cable for pinch points and any
other damage to the cable or connector.
Is the cable damaged?
Replace the transfer module.
2
Does the error clear?
902.59—Engine software error, NVRAM MGR problem service check
Step Questions / actions
1. Turn off the printer.
1
2. Remove the rear frame cover. See
frame cover removal" on page
3. Check JPH1 and JTPS1 for proper
connection and damage.
4. Check the transport cable on the transfer
belt module side for any damage.
Is either of the cables damaged?
1. Reseat the JPH1 and JTPS1 cables.
2
2. Reseat the transport cable on the transfer
belt module side.
3. Power on the printer.
Does the problem persist?
Install a new transfer module to verify if the
3
old transfer module is defective.
Does the problem persist?
Connect a new transport cable from outside
4
of the machine.
Does the problem persist?
Connect a new printhead assembly from
5
outside of the printer and verify the printhead.
See
"Printhead verification" on page
Does the problem persist?
Service Manual
2-96
Yes
Replace the transport
cable. See
"Transport
"Rear
cable removal" on
4-47.
page 4-173.
Problem resolved.
Yes
If the JTPS1 cable is
damaged, replace the
"Rear
JTPS1 cable.
4-47.
If the JPH1 cable is
damaged, replace the
printhead assembly. See
"Printhead removal,
installation, and
adjustment" on
page 4-145
Go to step 3.
Go to step 4.
1. Return the old transfer
module and transport
cable.
2. Go to step 5.
Replace the system board.
See
"System board
3-39. removal" on page
No
Go to step 2.
Replace the system board.
See
"System board
removal" on page
No
Go to step 2.
Problem resolved.
Replace the transfer
module. See
"Transfer
module removal" on
page 4-171.
Replace the transport
cable. See
"Transport
cable removal" on
page 4-173.
Replace the printhead
assembly. See
"Printhead
4-155. removal, installation, and
adjustment" on
page 4-145
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4-155.