Lexmark E330 Service Manual page 88

4505
Operator panel service check (continued)
FRU
Operator panel
Controller card
Warning: Do not replace the
operator panel and
controller card at the
same time. Each card
contains the printer
settings. When either
of these cards is new,
it obtains the settings
from the other card.
Settings are lost when
both are new and
replaced at the same
time.
2-60
Service Manual
Action
Lights
If none of the lights come on, make
sure the cable is properly connected
to the controller card and the
controller card has input voltage to it.
Verify +24 V dc on cable pin 8 at J7.
• Check for +5 V dc at J16, pin 5
See "Controller card service
check" on page 2-49
for more information.
• If these voltages are not correct,
replace the controller card.
• If these voltages are correct,
replace the operator panel.
If more than one light does not turn
on or an individual light stays on
solid during POST, replace the
operator panel.
If all lights are dim and operate
erratically during POST or all lights
come on and stay on solid during
POST, replace the FRUs in the
following order one at a time:
• Controller card
• Operator panel
or page 5-3