Training, Installation & Service Manual - Livewire Connections Ltd

9.5.3 Replacing the VSAT Interface Module (VIM)
The VIM is the interface between the antenna cable signals (power,
internal modem communication, RX IF and L-band TX) and to the
cable to the LNB /BUC and PCM. The VIM also provides power to the
LNB and BUC and all other modules in the ADU.
The VIM has two LEDs for status and troubleshooting:
• Power LED: green or Off
• Service LED: green or red
To replace the VIM, do as follows:
Power LED (green)
Service LED
(green or red)
Figure 9-17: VSAT Interface Module (VIM)
1. Open the service hatch by releasing the two latches.
2. Switch off the power to the antenna on the service switch.
VIM
Removal and replacement of ADU modules
Tools needed:
• 4 x 150 mm Allen key
(located inside the
service door of the ADU)
• 8 mm open-end spanner
• 11 mm open-end spanner
• 18 mm open-end
spanner
• Flat head screw driver
9999
Figure 9-18: Location of the VIM
3. Rotate the antenna pedestal so that the arm of the GPS module
faces the service hatch.
Service & maintenance
98-133966-E2 Chapter 9: Service & maintenance 9-21