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TM 11-5820-890-20-2
5-10
5.2.
OPERATIONAL CHECK. Continued
STEP 7. LS 671 CHECKS:
STEPS TO PERFORM
CHECKS TO MAKE
ACTIONS TO TAKE
7.1
Connect HS to LS 671 J2
Push LS 671 Volume IN
Set RT:
COMSEC to CT
FCTN to SQ ON
MODE to SC
RF PWR to HI
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
7.2
Pull LS 671 Volume OUT
Press PTT and count into HS
N/A
Sidetone heard at HS?
N/A
YES: Continue
NO:
Go to TS Chart 11
Sidetone heard at LS 671?
YES: Replace LS 671
NO:
End of Operational Check*
* Return HS to operational position, if required.
(End of Operational Check for SRM; See TS Chart 12 for Check if
having trouble with transmitting / receiving data using data device..)
5.3.
TROUBLESHOOTING FLOWCHARTS.
This paragraph provides the unit maintainer with a general use schematic (Short Range Single Radio Mount)
plus 12 Troubleshooting Charts. The unit maintainer is directed to one or more specific Troubleshooting Chart
from the Operational Check. Use of Troubleshooting Charts prior to application of the Operational Check,
represents poor use of unit maintainer time, can result in false pulls, and is strongly discouraged.
After application of the Operational Check and one or more Troubleshooting Charts, if required, the unit
maintainer will perform the prescribed LRU replacement or repair. To ensure that the system is completely
operational following such maintenance action, the unit maintainer again applies the complete Operational
Check. If the system then passes all steps of the Operational Check, the system may be declared fully
operational and returned to service.
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