TM-9-1290-365-24-P
PALADIN MUZZLE VELOCITY SYSTEM M93 UPGRADED
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
OCTOBER 2000
TM-9-1290-365-24-P - Page 216 of 334
ARMY TM 9-1290-365-24&P
CAUTION
Exercise extra caution while handling the transceiver and its electrical terminal.
Use grounding strap on both hands.
Deenergize all external power supplies and other test equipment when
disassembling or reassembling the UUT.
WARNING
NOTE
In all troubleshooting procedures, when additional disassembly or reassembly is required,
refer to the appropriate disassembly (D.4.6) or reassembly (D.4.11) procedure.
After completion of troubleshooting and repair, perform the complete test procedure from
the start.
D.4.13.1 TRANSCEIVER POWER SUPPLY FAILURES. Failure in test procedure para. D.4.12.3 12.2.3.
D.4.13.l.1 Failure in Test Procedure Para. D.4.12.3 2.2.3d, e.
a. Remove connector P1.7 from power supply module and check for 28Vdc between pins 6 and 2 of
connector P1.7. If no voltage, check wiring from connector P1 to connector P4 (pins 1 and 2).
b. Check wiring from connector P12.3, pins 13, 12.32 to connector P4, pins 8, 9 respectively.
c. Remove connector P2 from power supply module.
d. Check for short circuit between pins 1.7 and 2 of connector P2. If shorted, check the connection to
Doppler amplifier CCA.
e. If not failed, test and troubleshoot power supply module lAW Section D.6.
D.4.13.1.2 Failure in Test Procedure Para. D.4.12.3 2.2.3.f.and g.
a. Remove connector P1 from power supply module. Check wiring from connector P1, pins 15, 7, 14
to connector P4, pins 5, 7, 6 respectively. Verify no short circuit to other pins.
b. If not failed, test and troubleshoot power supply module lAW Section D.6.
D.4.13.1.3 Failure in Test Procedure Para. D.4.12.3 2.2.3.i.
a. Check for correct voltage (marked on the power supply module and the transceiver) on the
transceiver oscillator input. If voltage is correct, replace transceiver.
b. Remove connector P2 from power supply module.
c. Check connector P2 pins 11 and 9 are properly connected to transceiver, and are not shorted.
d. Check connector P2, pin 8 is properly connected to connector P4, pin 10, and is not shorted.
e. If not failed, test and troubleshoot power supply module lAW Section D.6.
D.4.13.1.4 Failure in Test Procedure Para. D.4.12.3 2.2.3 h. and j. Test and troubleshoot power supply
module lAW Section D.6.
D.4.13.2 TRANSMITTED FREQUENCY FAILURE. Failure in test procedure para. D.4.12.2.4.
a. Repeat the test procedure. Verify proper RF frequency counter setting and calibration.
b. If there is no frequency reading or frequency adjustment is impossible, replace transceiver.
D-46
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