2-16 Service Manual
4044-XXX
Model E312
LVPS Board
Disconnect the LVPS cable from
connector CN7 on the engine board.
Go to the “LVPS (model E312)” on
page -14. Check the voltage
measurements at connector CN503.
If any voltage measurements are
incorrect, replace the LVPS.
Model E312
Engine Board
Reconnect the LVPS cable to
connector CN7 on the engine board.
Disconnect all other cables from the
engine board. Go to the “Engine
Board (model E312)” on page -9.
Check the voltage measurements at
each connector. If any voltages are
incorrect, replace the engine board.
If all voltages are correct, reconnect
all the cables to the engine board
one at a time. Check the voltage
meausrements on the engine board
each time you connect a cable. If a
voltage measurement is incorrect
after connecting one of the cables,
replace the FRU that you connected.
FRU Action
