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Page Title:
+5.2 V Regulator Assembly A3A4 Calibration |
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  TB 11-6625-2974-30
b.
+5.2 V Adjustment.
4-2.
+5.2 V Regulator Assembly A3A4
(1) Set STE PRIME POWER AC and DC switches
Calibration
to OFF.
a.
+5.2 V Performance Check.
(2) Remove card cage (refer to TM 11-6625-2974-
(1) Disconnect A3-Pll from A4A1-J2 (fig.4-
13) to gain access to +5. V regulator assembly
2).Connect three, 15-ohm, 2-watt, 5-percent
A3A4.
resistors in parallel between pin 10 and pin 13 of
(3) Set STE PRIME POWER AC and DC switches
A3-Pl. Connect DVM to pin 10 (+) and pin 13 (-
to ON.
of A3-Pll.
(4) Adjust A3A4-R3 (fig.
(2) Set STE PRIME POWER AC and DC switches to
of + 5.+ 0.05 on DVM.
ON.
NOTE
(3) Observe DVM. Reading should be +5.20
The +5. V regulator A3A4 is on the back
± 0. V. If the performance standard is met, perform
of front panel assembly A3. To adjust
step (4).If not, go to subparagraph b (below) for
A3A4- R3, reach in through the opening
adjustment.
shown in figure 4-4.
(4) Set STE PRIME POWER AC and DC switches
(5) Set STE PRIME POWER AC and DC switches
to OFF.
to OFF.
(5) Disconnect
DVM
and
resistors
from
(6) Reinstall card cage (refer to TM 11-6625-2974-
A3P11.Connect A3-Pll to A4A1-J2.
13).
(7) Disconnect DVM and resistors from A3-
P11.Connect A3-Pll to A4A1-J2.
4-5
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