TM 9-4935-481-14-1
C1
Table 3-10. DMS-D Maintenance Calibration-Continued
Table 3-10. DMS-D Maintenance Calibration-Continued
STEP
UNIT
PROCEDURE CORRECTIVE ACTION
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
85
ITP
INTERNAL TEST switch to 2.
Sum and Difference Simulator (39-106 and/or 158-408)
86
DMM
Adjust A5-RI to 1.388 + 0.001 Vdc.
A1 (12075119) , A2 (10275122) and A3 (10275143)
Check A1S33-A15.
102
Return all switches to the initial switch settings, leaving the
87
ITP
INTERNAL TEST switch to 3.
MAIN POWER and DMS switches ON.
88
DMM
Adjust A5-R16 to +0.1440 0.0001 Vdc.
89
ITP
INTERNAL TEST switch to 1.
103
Connect a jumper wire from A2-TP2 (BRN) to J33 (GND).
90
DMM
Record reading for use in step 95 and 96 below.
104
PPE
FUNCTION TEST switch to INT CLK.
91
ITP
INTERNAL TEST switch to 2.
105
MCP
DMM INPUT switch to DMM INPUT.
92
DMM
Record reading for use in step 95 below.
106
Connect the DMM pos probe thru a 510 ohm + 10% resistor to
93
ITP
INTERNAL TEST switch to 3.
A2-TP3(RED).
94
DMM
Record reading for use in step 96 below.
107
DMM
Record the value indicated for use in step 110.
95
Subtract the numerical reading recorded in step 92 from step 90
108
Disconnect the end of the jumper wire from A2-TP2 (BRN) and
and record.
connect it to A2-TP1 (BLK).
96
Subtract the numerical reading recorded in step 90 from step 94
109
PPE
SEQUENCE switch to AUTO 1.
and record.
110
DMM
Adjust A2-R7 to the same value (with the opposite polarity) as
97
DMM
Adjust A5-R16 until the numerical readings recorded in steps 95 and
that recorded in step 107 + 0.001 Vdc.
96 are equal within 0.0010.
Check AlS19-E.
98
Repeat steps 89 through 97.
111
Remove the jumper wire between A2-TP1 (BLK) and GND.
99
Remove the probe from A6-TP2 (BRN) and connect it to A6-TP1
112
ITP
INTERNAL TEST switch to 5.
(BLK).
113
Remove the probe from A2-TP3 (RED) and stow the resistor.
100
DMM
Adjust A6-R3 to +5.150 0.001 Vdc.
114
Connect the DMM pos probe to A3-TP4 (ORN).
Check A1S33-A15.
115
SDS
Adjust ALIGN 1 control to 0.0000 + 0.0003 Vdc.
101
Remove the probe from A6-TP1 (BLK).
DMM
Check A1S33-A6 and Al-R14.
116
ITP
INTERNAL TEST switch to 1.
3-63
