TM
9-4931-436-14&P
Alignment Device,
Direct Support Troubleshooting Table - continued
Table 5-1.
CORRECTIVE
ACTION
TEST OR INSPECTION
MALFUNCTION
1. Replace cable
1. Inspect for broken wire.
4.
ONE DISPLAY
assembly.
MALFUNCTIONS
2. Tighten or replace
(Refer to fig. 5-2,
2. Inspect for loose
cable assembly.
retest per chapter 7)
connector.
3. Replace board.
3. Test for defective dis-
play board by substitu-
tion.
4. Replace board.
4. Test output board by
substitution.
1. Repair or replace
1. Inspect for broken wire.
5.
DEVICE
CANNOT BE
wiring/harness
TURNED
OFF MANUALLY
assembly W10.
(Refer
to fig. 5-2,
2. Resolder connection
retest
per chapter 7)
2. Inspect for bad solder
connection.
3. Tighten or replace
3. Inspect for loose
cable assembly.
connector.
4. Replace S3.
4. Test for defective S3.
5. Replace A3.
5. Test for defective
regulator board A3 by
substitution.
6. Test for defective timing 6. Replace A2A2.
logic board A2A2 by
substitution.
7. Test for defective micro- 7. Replace A2A3.
processor logic board
A2A3 by substitution.
1. Replace defective
INCORRECT RESPONSE
Use MILES programmer test
6.
preamplifier board.
set, and transmitter test
ON LEFT DISPLAY.
(Refer to fig. 5-2,
set fitted with aperture
adapter to test detector
retest per chapter 7)
array.
Step 1. On right side of
detector array fire at each
cross point until an incor-
rect response is received
at test point 1. Test pre-
amplifier boards in line
with horizontal coordinates,
and adjacent boards. Defec-
tive board will show no pulse
when appropriate area of
array is illuminated.
5-3
