TM 11-6625-3081-23
7-26. ANALOG-TO-DIGITAL (A/D) CONVERTER 2A2A13
7 - 26
INPUT CODE: ADST (cont)
2. CORRECTIVE ACTION - SEGMENT 4 (cont)
(1) Check the following cable assemblies and repair as required:
Test cable 13082730
2A2W1
2A2W7
2A2W19
If any cable was repaired, perform ADST test. If ADST test passes, no
further action required.
If ADST test fails, repair is beyond this
level of maintenance.
Next higher level of maintenance required.
If no cables were repaired, repair is beyond this level of maintenance.
Next higher level of maintenance required.
If another segment displayed, proceed to that segment and continue
troubleshooting.
g. SEGMENT 5
1. VDT DISPLAY
DIFFERENTIAL INPUT CARD SLOT J4 FAILED.
PERFORM THE FOLLOWING REPLACE
ACTIONS IN THE ORDER LISTED.
(REFERENCE TM 11-6625-3081-23 FOR REPLACEMENT
PROCEDURES.)
REF. DES.
PART NO.
NAME
1. 2A2A13XX
AC4720
DIFF. INPUT CCA (J4)
2. 2A2A11XX
HP69433A
RELAY READBACK CCA (SLOT 400)
3. 2A2A13
13081746
A/D CONVERTER
4. 2A2A10
13081925-19
MATRIX SWITCH
2. CORRECTIVE ACTION - SEGMENT5
(a) Remove Differential Input CCA 2A2A13XX (J4). Check contacts of mating
connectors and repair if required.
Install replacement 2A2A13XX and
perform ADST test.
If ADST test passes, no further action required.
If this segment displayed again, proceed to (b). If another segment
displayed, proceed to that segment and continue troubleshooting.
Change 6
7-133
