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TM 11-5820-890-20-2
5-4
5.2.
OPERATIONAL CHECK.
The operational check is a series of steps to evaluate equipment before placing the equipment in service and
after repair. This check should be done with the equipment assembled. If you are checking a system containing
an RCU, disconnect the field wire.
NOTE
To get valid results, the operational check MUST be followed exactly as written.
Step 1 of the operational check lists actions to establish a starting condition for the performance checklist that
follows. The checklist is divided into steps. Each step tests how a component works alone and together in a
system. The steps are numbered so they can be used for reference on maintenance worksheets. Each step is
titled according to the function being checked.
IMPORTANT POINTS TO REMEMBER IN USING THE OPERATIONAL CHECK
When an Operational Check step involves an item of equipment which is not used in the system being
checked, skip the appropriate portion of that step and continue to the next step.
It is important that Operational Check steps be performed as stated and in the order presented in the
manual.
If the vehicular radio system being checked includes an AN/VIC-1 (VIC) intercom, determine as early
as possible whether the problem is in the VIC or the radio; then troubleshoot that part of the system. If you
need to troubleshoot the VIC, see Chapter 2.
Once you have completed the Operational Check, and the problem appears to be solved, make a
communications check (unless prohibited by unit SOP or the tactical situation) and repeat the Operational
Check to ensure the system is completely operational.
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