ARMY TM 9-1290-365-24&P
Table 3-3. MVS/AFCS Interface Troubleshooting
Problem
Corrective Action
MVS BIT failed
Replace Paladin MVS Transceiver
MVS did not return BIT status message
a. Replace Paladin MVS Transceiver.
b. Replace Power and Data Cable (0.75-m)
c. Replace Power and Data Cable (5-m)
d. Troubleshoot AFCS interface.
No DCU MVS communications
a. Replace Paladin MVS Transceiver.
b. Replace Power and Data Cable (0.75-m)
c. Replace Power and Data Cable (5-m)
d. Troubleshoot AFCS interface.
AFCS cannot calculate MVV because of mea-
sure errors
a. Verify that required AFCS data entered is
correct.
b. check that MVS is securely mounted on the
gun.
BIT is OK. MVS does not measure
a. Verify Transceiver is securely mounted on
the gun.
b. Replace Paladin MVS Transceiver.
c. Replace Power and Data Cable (0.75-m)
d. Replace Power and Data Cable (5-m)
e. Troubleshoot AFCS interface.
No MVV Acquired
a. On initialization, did the operator set the
MVV rounds to the minimum required for
the FM (I.E. the minimum number of good
rounds required for MVS calculations?)
b. For the FM in question, does the AFCS
have the same type of ammo combination
and quantity as the BCS required for the
FM?
c. Are extended lots specified for the
propellant to be used in the FM?
d. Was the charge to be used specified in the
BCS CFF message?
MVS Verification Check (Dry Fire)
a. Initiate a BCS six (6) round FM to the gun
Specifying
HEA/M4A2/PDA/CHARGE4/EXPVEL=334
M/S
b. When the 'Fire When Ready' screen
appears on the AFCS, use a rubber mallet
to tap lightly on the side of MVS radar
head.
c. For each tap, the number of rounds should
decrement once.
d. If the AFCS does not decrement, turn the
unit in with a DA 2404 and DA 2407
describing the fault.
3-6