Operating instructions

TM 11-5865-229-12
Do not disconnect CCU ground cable before disconnecting J1 and J2 on the CCU. An ungrounded
CCU can present a shock hazard if the system power is switched on during CCU removal.
Disconnect
J1 and J2 by removing
securing screws.
Disconnect CCU ground cable by loosening CCU ground screw.
c. CCU Installation.
Perform the following procedure to install the CCU in the aircraft crew com-
partment.
High voltage present in this equipment is sufficient to cause injury. Make sure system power is off
before beginning procedure.
Connect CCU ground cable before connecting
J1 and J2 on the CCU. An ungrounded CCU can present
a shock hazard if the system power is switched on during CCU installation.
The CCU front panel display is powered by high voltage and can present a shock hazard if it becomes
cracked. Check panel for cracks before installing CCU.
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