TB 9-6625-2211-24
a. Performance Check
(1) Connect multimeter between PS1A1TP1 (fig. 1) and chassis ground. Multimeter
will indicate between 27.75 and 28.25 V dc. If not, perform b (1) below.
(2) Adjust autotransformer output from 103.5 to 126.5 V ac while observing
multimeter indication.
(3) Multimeter will indicate between 27.75 and 28.25 V dc.
(5) Disconnect multimeter from PS1A1TP1 and connect to PS1A1TP5 (fig. 1).
Multimeter will indicate between 11.75 and 12.25 V dc. If not, perform b (2) below.
(6) Repeat (2) above. Multimeter will indicate between 11.75 and 12.25 V dc.
(7) Repeat (4) above.
(8) Disconnect multimeter from PS1A1TP5 and connect to PS1A1TP6 (fig. 1).
Multimeter will indicate between -11.75 and -12.25 V dc. If not, perform b (3) below.
(9) Repeat (2) above. Multimeter will indicate between -11.75 and -12.25 V dc.
(10) Repeat (4) above.
(11) Disconnect multimeter from PS1A1TP6 and connect to PS1A1TP7 (fig. 1).
Multimeter will indicate between 4.75 and 5.25 V dc. If not, perform b (4) below.
(12) Repeat (2) above. Multimeter will indicate between 4.75 and 5.25 V dc.
(13) Repeat (4) above.
b. Adjustments
(1) Adjust PS1A1R4 (fig. 1) for a 28.0 V dc multimeter indication (R).
(2) Adjust PS1A1R26 (fig. 1) for a 12.0 V dc multimeter indication (R).
(3) Adjust PS1A1R32 (fig. 1) for a -12.0 V dc multimeter indication (R).
(4) Adjust PS1A1R36 (fig. 1) for a 5.0 V dc multimeter indication (R).
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.