Abstract :
Passenger Information Sign is a system that consists of a no-smoking sign,
return to seat, fasten seat belt sign, which serves as a support for safety aspects
when bad weather occurs where all passengers must remain in their seats and must
use safety belts and during critical eleven due on board, all of passengers must be
ensured in their seats with safe conditions.
The method used in solving problems involving the Passenger information
sign system by troubleshooting is based on the AMM Boeing 777-200/300, starting
from examining the passenger information sign components, namely: (1) CSMU or
Cabin System Management Unit which gets input from ARINC 629 and ARINC 628
and in the aircraft cabin is divided into three zones where CSMU provides output
to, (2) ZMU or Zone Management Unit which functions to foster passenger
compartment lights in each zone, forwarded to, (3) OEU or Overhead Electronics
Unit which provides power for Passenger information signs on each seat and the
OEU receives output from the PCU or Passenger Control Unit to give reading light
assistance or call attendant commands.
Cabin compartment light, especially in the Passenger information sign where
no-smoking does not comes on in zone one when an operational check is carried
out. We can identify the problem in the ZMU where this component functions as a
controller for each zone. After the problem is found in the ZMU, and the ZMU
installation is done, after the installation process is complete, it must be followed
by testing on the info sign system and the no-smoking sign can be operate normally
Keywords : CSMU(cabin service management unit), ZMU(zone management unit),
OEU(overhead electronics unit).