ViaSat VBM-1400, Инструкция по установке и эксплуатации, Страница: 66 / 81

VBM-1400 Broadband Modulator Installation and User’s Guide
Maintenance Instructions
1018360 Rev. 002
6-10
6.6 Removal and Replacement
For removal and replacement of the VBM-1400, refer to paragraph
6.6.1 and 6.6.2.
6.6.1 Removing the VBM-1400
To remove a VBM-1400 chassis, follow these steps.
1. Disconnect the power cable to the VBM-1400.
2. Disconnect all other rear panel cables.
3. Remove the VBM-1400 from the rack.
4. Remove and save slides and any mounting hardware, and prepare
the unit for shipment. Refer to Chapter 7.
6.6.2 Replacing the VBM-1400
To replace or reinstall the VBM-1400, reverse the removal instructions
in the paragraph above. If required, refer to Chapter 3 to reconfigure
the VBM-1400.
6.6.3 Removing and Replacing Cables and Connectors
Observe the following general procedures when removing or replacing
cables and connectors.
1. Never pull equipment by cord. Never suspend equipment from cord.
2. When disconnecting power cord, always disconnect power source
first.
3. Never attempt to mate connectors before first aligning their
centerlines. It is often possible to mate threads without aligning the
pins. This will result in bent pins, destroyed dielectric properties,
and stripped threads.
4. Depending on the connector type, it is often possible to “feel”
whether pins are aligned. Gently mate the coupling until it bottoms.
During the process, if the nut (or screw) is difficult to turn, it may
be due to pin misalignment, cross-threaded coupling nut, or actual
damage to the connector.
5. Stop and determine the reason for connector misalignment. Failure
to do so may result in damage to the connector or possibly the
attached component.
6. Never hold a male coupling nut stationary while screwing the female
counterpart into it. This will ultimately destroy both connectors.
Excess wear to the connector or its plating may result.
7. Do not allow connectors or cables to twist while tightening
connector nuts. This will cause torque to be transferred to the
cable. Damage to the connector and cable may result.
8. Never use pliers to tighten any connector. Over tightening can cause
connector or other assembly damage. Ensure that connectors are
hand tight and fit firmly to prevent arching.
9. Ensure proper cable strain relief to prevent damage to equipment
connectors.
10. Ensure waterproof tape is applied correctly to outdoor connections.
Warning. Ensure
that all connectors are
connected tightly.
Loose connections can
cause faulty contacts
that may induce arcing
and cause personal
injury or damage to
equipment.
Warning.
Voltages in excess of
30 VAC or 42.5 VDC
are potentially
hazardous. Careless
use of metal tools or
conductive fluids may
cause equipment
damage, electric shock
or burns. Live circuits
must not be broken by
separating mating
connectors. This may
cause arcing,
ionization and burning.