TM 9-4935-481-14-1
C1
Table 3-11. DMS-D
Performance Test-Continued
Table 3-11. DMS-D
Performance Test-Continued
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
2086
MCP
Remove the probe from pin "GG".
2100
MCP
SELECTOR A switch to A13.
2087
MCP
Remove the probe from pin "S".
2101
MCP
SELECTOR B switch to G3.
2088
MCP
Connect the white probe from J13 to pin "H".
2102
PPE
SEQUENCE switch to OFF.
2089
MCP
Connect the white probe from J15 to pin "T".
2090
MCP
SELECTOR A switch to H14.
CAUTION
2091
MCP
Adjust COMPARATOR THRESHOLD C control until the display oscillates
Repositioning SELECTOR A or B switches while the
OSC
1W20 cable is connected between J15 and J13 will
between -0.3 + 0.8 and +2.60 +1.80 -0.84 Vdc.
result in damage to DMS circuit components.
Replace card A18. Check A18 pins
23, 1 and 54.
2103
MCP
Connect 1W20-P1 to J12 and 1W20-P2 to J13.
2092
MCP
SELECTOR A switch to I-24.
2104
DMM
Observe a reading of > +2.4 Vd
2093
DMM
Observe a reading of -0.1940 to -0.2060 Vdc.
(172)
Replace card A18. Check A18 pins
23, 1 and 54.
2105
TP
Actuate TEST START switch and observe a reading of < 0.4 Vdc
while the switch is held actuated.
2094
MCP
Remove the probe from pin "H" and connect it to pin "G".
Replace card A18. Check A18 pins
2095
MCP
SELECTOR A switch to H15.
37, 99, 119 and 120.
2096
MCP
Adjust COMPARATOR THRESHOLD C control until the display oscillates
2106
TP
Release the TEST START switch.
OSC
2107
PP
MAIN POWER and DMS switches to OFF.
between -0.3 0.8 and +2.60 +1.80 -0.84 Vdc.
2108
Disconnect all test leads.
Replace card A18. Check pins
25, 1 and 12.
2097
MCP
SELECTOR A switch to I-24.
NOTE
2098
DMM
Observe a reading of -0.1940 to -0.2060 Vdc.
DMS-D test set is now ready to perform DRAGON Weapon
Replace card A18. Check pins
System Performance Tests.
25, 1 and 12.
2099 MCP Disconnect all cables from J13, J12, J15 and the adapter at J5.
3-147/(3-148 Blank)