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4.6
Replacement of the PCBA CCR Interface Board
Before carrying out any intervention on the fixture, cut off all external power sources and
place appropriate work-in-progress warnings on the systems.
Wait for the discharging time (at least 5 minutes) and check using appropriate instruments
that there are no residual energies before accessing the electrical equipment.
The electronic board is provided in a kit including a cover, terminal board and cable. In the version for the monitored
LHA unit, the replacement kit also includes the monitoring relay. When ordering always communicate the model
and the options installed on the LHA device.
Disconnect the supply cables of the LHA unit. Remove the upper cover of the fixture (1a) and access the electronic
box (1b) (see related paragraph in the chapter "ADJUSTMENTS AND MAINTENANCE").
Unscrew the screws and remove the cover (2a) of the electronic box internal to the fixture.
UT-MT-0972_1.0_19-09-2022 (EN)
Use and Maintenance Manual
LED PAPI 66
33
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