TM 11-5895-856-34-1/EE640-CA-MMI-010/E154 CPU/TO31W2-2T-122-1
b. Set BCP toggle switch to down position.
i. Place probe on card under test.
c. Set SS toggle switch to down position.
j. Check indicators 1 through 71 and note which
one is on.
d. Depress LT pushbutton and verify that all
k. Depress SOP switch and repeat step i. until the
indicators light.
MTS has repeated its cycle if continuous cycle switch is
e. Perform card cage troubleshooting with MTS.
on.
f. Check CARD ID indicators and verify that binary
code configuration (lamp on/off conditions) match the
no., and locate lamp no. corresponding to indication in
card type under test as listed in table 3-3.
step i.
g. Set DATA/FUNCTIONAL/CONT (S01) switch to
FUNCTIONAL or CONT position, depending on error
and card assembly part number.
condition observed on MTS display.
n. Refer to section V to determine applicable wire
h. Set SS toggle switch to up position.
list number, then to the wire list supplied in separate
NOTE
volumes.
If both FUNCTIONAL INPUT ERROR
o. Turn off power to MTS and system under test
and FUNCTIONAL OUTPUT ERROR
and isolate problem to the open or short circuit wiring for
indicators on the MTS are on, short
the indicated pin number.
circuit condition is in input signal
line.
If only the FUNCTIONAL
regarding card cage repair when the open or short circuit
OUTPUT ERROR indicator is on, the
has been located.
short circuit is in the output signal
line.
Table 3-3. MTS Test Aid Card Type Identification
CARD ID indicators1
32
16
8
4
2
1
Decimal equivalent of binary number
Card type
0
0
0
0
0
0
0
587102
0
0
0
0
0
1
1
587103
0
0
0
0
1
0
2
587104
0
0
0
1
0
0
4
587108
0
0
0
1
0
1
5
587110
0
0
0
1
1
0
6
587117
0
0
1
0
0
0
8
149513
0
0
1
0
0
1
9
149580
0
0
1
1
1
0
14
587106
0
0
1
1
1
1
15
587109
0
1
0
0
0
1
17
587105
0
1
0
0
1
1
19
149512
0
1
0
1
0
0
20
149616
0
1
0
1
1
0
22
149576
1
Indicator On = 1, Indicator Off = 0
Table 3-4. MTS Test Aid Lamp Numbers and Related Circuit Card Pin Numbers
Circuit card assemblies and I/O pin numbers
MTS
test
Circuit
587102- 102 thru
aid
card
149616-100,
587106-102,
lamp
assy
149612-100,
149676-100,
587108-102 thru
no.
TP no.
149513-100
149680-100
587110- 102
587117-102
1
7A
13
13
10
11
2
6A
14
14
8
13
3
6A
10
10
6
6
4
4A
8
8
4
8
5
3B
6
3
5
5
6
2B
3
1
1
1
7
2A
4
4
3
4
8
3A
6
6
7
3
9
4B
7
5
9
7
10
5B
9
7
11
9
11
6B
11
9
13
10
3-7
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