TM 11-6625-3081-23
7-4. DC POWER SUPPLY ASSEMBLY 1A4
7 - 4
INPUT CODE:
FPSST (cont)
2. CORRECTIVE ACTION - SEGMENT 1 (cont)
(d) Check the following cable assemblies and repair as required:
W3
1W5
2A2W1
2A2W3
2A2W7
2A2W17
If any cable was repaired, perform FPSST test. If FPSST test passes,
no further action required.
If FPSST test fails and CALCST, PLLBUS,
MTRXSW, ADST, and DIGITST tests have been performed, repair is beyond
this level of maintenance.
Next higher level of maintenance required.
If no cables were repaired and CALCST, PLLBUS, MTRXSW, ADST, and
DIGITST tests have been performed, repair is beyond this level of
maintenance.
Next higher level of maintenance required.
If another segment displayed, proceed to that segment and continue
troubleshooting.
d. SEGMENT 2
1. VDT DISPLAY
+15 VOLT POWER SUPPLY FAILED ACCEPTABLE LIMITS PERFORM THE FOLLOWING REPLACE
ACTIONS IN ORDER LISTED.
(REFERENCE TM 11-6625-3081-23 FOR REPLACEMENT
PROCEDURES.)
REF. DES.
PART NO.
NAME
1. 1A4PS2
BKF 15-6
+15 VDC SUPPLY
2. 2A2A13XX
AC4720
DIFF. INPUT CCA (J8)
3. 2A2A7A6A4
13082738
TEMP. MONITOR CCA
NOTE:
ATTEMPT ADJUSTMENT OF THE SUPPLY PRIOR TO REPLACEMENT.
2. CORRECTIVE ACTION - SEGMENT 2
Corrective action same as segment 1. Refer to segment 1 for
troubleshooting.
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