Embraer EMB145 - Page 1308

AIRPLANE
OPERATIONS
MANUAL
GROUND SERVICING
TEMPORARY REVISION 41.1
1-12-60
Page
7
Code
01
Copyright © by Embraer. Refer to cover page for details.
AOM-145/1114
ATA
EICAS
MESSAGE
or
CONDITION
LOCATION PROCEDURE
24
Absence of
electrical
power at
some buses
(Transitory
condition of
the electrical
circuit)
GPU
(1) Energize airplane with external
DC power supply.
(2) Check that output voltage of
external power is 28 ± 0.5 V DC.
(3) Check that BATT 1-2 switches,
BUS TIE switch, and ESSENTIAL
POWER pushbutton (pushbutton
released), on the electrical panel,
on the overhead panel, are set at
the AUTO position.
(4) Check that GPU pushbutton, on
the electrical panel, on the
overhead panel, is set at ON
(GPU pushbutton pushed).
(5) Set the ELEC PWR switch, on the
maintenance panel, to RESET.
23
ACARS/
DMU failure
message on
FMS
(Transitory
condition of
the CMU)
ACARS
Make sure the CMU ground service
is active and ready to use.
Make sure the CMU is correctly
installed.
Check if the fault occurred during the
airplane power-up.
NOTE: The CMU takes
approximately 1 minute or 2 minutes
to restart. During this time, the CDU
displays ACARS DMU FAILED.