TB 9-6625-1967-24
22. Power Supply
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
a. Performance Check
(1) Connect multimeter common lead to TI TP6332 (GND) (fig. 5) and positive lead
to TP6256 (+25) (fig. 5). If multimeter does not indicate between 24.75 and 25.25 V dc,
perform b below.
NOTE
Leave common lead connected to TP6332 (GND) (fig. 5)
throughout this performance check.
(2) Repeat technique of (1) above for test points listed in table 6. If multimeter does
not indicate within limits specified, perform adjustment listed in table 6.
Table 6. Low-Voltage Power Supply
Multimeter indications
Test instrument
Adjustments
(V dc)
test points
Min
Max
TP6411 (+10)
+9.9
+10.1
R6514 (+10ADJ) (R)
TP6227 (+5)
+4.75
+5.25
---
TP6218 (-5)
-4.75
-5.25
---
P66 (PIN 6) +100V
+90
+110
---
P66 (PIN 7) +165V
+155
+175
---
b. Adjustments. Adjust R6358 (HV) (fig. 5) for a 25 V dc indication on multimeter (R).
23. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.