TM 9-4935-481-14-1
C3
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
9
DMM
Adjust PC1-R50 ccw until a rapid decrease in the reading occurs.
10
Adjust PC1-R50 eight turns cw.
31
MCP
SELECTOR A switch to I-3.
11
PP
MAIN POWER switch to OFF and then to ON.
32
DMM
Adjust PC3-R3 to - 13.00 0.04 Vdc.
12
DMM
Adjust PC1-R3 ccw to +4.750 0.250 Vdc.
13
MCP
DMM INPUT switch to SEL A.
24VDC Supl
14
MCP
SELECTOR A switch to I-1.
33
Adjust PC4-R50 several turns cw.
15
DMM
Adjust PC1-R3 to +5.000 0.015 Vdc.
34
MCP
DMM INPUT switch to DMM INPUT.
35
MCP
DMM LO switch to EXT.
13 VDC Supply
36
Connect the DMM neg probe to GND LUG.
37
DMM
Adjust PC4-R3 max. cw.
16
Adjust PC2-R50 several turns cw.
38
DMM
Adjust PC5-R3 max. cw.
17
MCP
DMM INPUT switch to DMM INPUT.
39
DMM
Adjust PC4-R50 ccw until the DM shuts off,
18
Monitor with the DMM pos probe at TB1-3.
40
Adjust PC4-R50 four turns cw,
19
DMM
Adjust PC2-R3 to +14.60 0.10 Vdc.
41
PP
MAIN POWER switch to OFF and then to ON.
20
Monitor with the DMM pos probe at TBl-9.
42
Monitor with the DMM pos probe to TB2-4.
21
DMM
Adjust PC3-R3 to -14.60 0.10 Vdc.
43
DMM
Adjust PC5-R3 -25.25 0.25 Vdc.
22
DMM
Adjust PC2-R50 ccw until a rapid decrease in the reading occurs,
44
Monitor with the DMM pos probe at TB2-1,
(drops to <1 volt).
45
DMM
Adjust PC4-R3 25.25 0.25 Vdc.
23
Adjust PC2-R50 four turns cw.
46
MCP
DMM INPUT switch to SEL A.
24
PP
MAIN POWER switch to OFF and then to ON.
47
MCP
DMM LO switch to SYS GND.
25
DMM Adjust PC3-R3 to -12.75 0.25 Vdc.
48
MCP
SELECTOR A switch to 1-4.
26
Monitor with the DMM pos probe at TB1-3.
49
DMM
Adjust PC4-R3 to 25.00 0.08 Vdc.
27
DMM
Adjust PC2-R3 to +12.75 0.25 Vdc.
50
MCP
SELECTOR A switch to I-5.
28
MCP
DMM INPUT switch to SEL A.
51
DMM
Adjust PC5-R3 to -25.00 0,08 Vdc.
29
MCP
SELECTOR A switch to I-2.
30
DMM
Adjust PC2-R3 to +13.00 0.04 Vdc.
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