Lexmark 248X-200 series, Service Manual

Page: 31 / 172

Diagnostic information
2-13
24XX-200
Service checks
Abnormal noise service check
Check the entire printer for loose parts.
FRU Action
1 Ribbon cartridge Remove and reinstall the ribbon cartridge.
2 Printhead Disconnect the printhead cable(s).
Run the print test (do not fold or damage the
cables during the test). Go to
“Print test” on
page 3-3 .
Replace the printhead if the noise is gone.
3 Carrier motor
ribbon drive
mechanism Disconnect the carrier motor connector CN2
from the logic board. Turn the printer off and
then back on.
If the abnormal noise is gone, look for a
problem with the carrier motor or ribbon drive
mechanism. Go to
“Carrier service check”
on page 2-16 .
4 Paper feed
mechanism Disconnect the paper feed motor CN1 from the
logic board.
Perform the Print Test. Go to “Print test” on
page 3-3 .
If the abnormal noise is gone, look for the
problem in the paper feed mechanism.