Lexmark Optra 4044-XXX, Service Manual

Page: 37 / 154

Diagnostic Information
2-15
4044-XXX
Model E310
Engine/LVPS Board
Power Switch Disconnect the cables from CN2 and
CN5 and leave the cables connected
to the power switch attached. With
the printer positioned on its left side
and the engine/LVPS board
positioned on a flat surface, turn the
power switch on and check the AC
line voltage at connector CN201. If
no voltage is present, replace the
power switch. If line voltage is
present, measure the voltages at
connectors CN2 and CN5. Go to
the
“Engine/LVPS Board (model
E310)” on page 5-4 and check for
correct voltage measurements.
Replace the engine/LVPS board if
any of the voltage measurements
are incorrect.
Model E310
LVPS to Interconnect Board
Cable Check the continuity of the LVPS to
interconnect board cable. Replace
the cable if it does not measure
continuity.
Model E310
Interconnect Board Reconnect the LVPS to the
interconnect board cable. Go to
“Interconnect Board (model E310)”
on page 5-21
and measure voltages
on the following connectors on the
interconnect board:
CN401/CN402/CN403/CN404/
CN405/CN407/CN408
If any of the measured voltages are
incorrect, replace the interconnect
board.
Model E312
Power Switch Place the printer on its rear side.
Position the LVPS board on a flat
surface with all the cables
connected. Turn the printer power
switch to the on position. Check the
AC line voltage at power switch
connector CN501. If no voltage is
present, replace the power switch
FRU Action