TM 11-6625-3081-23
7-28. OPTICAL SIGNAL GENERATOR (OSG) 2A2A3
7-28
INPUT CODE: OSGST (cont)
(f) Check the following cable assemblies and repair as required:
W2
2A2W13
2A2W17
2A2W21
2A2W22
If any cable was repaired, perform OSGST test. If OSGST test passes,
no further action required.
If OSGST test fails and CALCST, PLLBUS,
MTRXSW, ADST, DIGITST, FPSST, and PPSST 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, DIGITST,
FPSST, and PPSST 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.
f . S E G M E N T 4
1. VDT DISPLAY
7-148
ORDER LISTED.
(REFERENCE TM 11-6625-3081-23 FOR REPLACEMENT PROCEDURES.)
REF. DES.
PART NO.
NAME
1. 2A2A3A5DS1-DS3 LMS-343-D
UNIFORMITY LAMPS
2. 2A2A6XX
HP69331B
DIGITAL OUTPUT CCA (SLOT 408)
3. 2A2A3A1
13231678
RELAY BRACKET ASSY
4. 2A2A3A4
13231677
AMPLIFIER-DETECTOR CCA
5. 2A2A3
13231679
O.S.G.
2. CORRECTIVE ACTION - SEGMENT 4
(a) Remove Lamps 2A2A3A5DS1 thru DS3.
Check contacts of mating connector
and repair if required.
Install replacement 2A2A3A5DS1 thru DS3 and
perform OSGST test.
If OSGST 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.
