(1) Press the pressure relief valve on the case to
The ECU consists of a control panel assembly with
relieve internal pressure.
related electronic parts, installed in a portable case.
(2) Unlatch and separate the lid from the bottom
When connected to the GRU and electric power
s o u r c e , the ECU provides controls and instruments
(3) Loosen the eight captive screws and lift the
f o r operating and testing the GRU.
electronic control panel assembly from the case (fig.
R e p a i r of the ECU consists of replacing defective
components. Refer to troubleshooting procedures
b . Installation.
assembly in the case and tighten eight captive
3-2. Electronic Control Panel Assembly
Repair of the electronic control panel assembly
(2) Secure the lid onto the bottom section of the
consists of replacing defective components
authorized by the MAC. Procedures for removal and
installation of components are described in following