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 TM 11-662-2976-40
2-13. OPERATING VOLTAGE ADJUSTMENT. (CONT)
3.
Adjust R130 until green lamp goes out and amber lamp lights.
4.
Increase positive power supply voltage to +7.752 vdc.
5.
If necessary, readjust R130 until amber lamp goes off and green lamp Iights.
Reduce positive power supply voltage to +7.748 vdc.
6.
7.
If necessary, readjust R130 until green lamp goes off and amber lamp lights.
Repeat procedure until lamps change from green to amber when positive power supply voltage is
8.
reduced to +7.750 v 1 mv dc.
Reduce positive power supply voltage to +7.200 v 1 mv dc.
9.
10.
Adjust R126 until amber lamp goes out and red lamp Iights.
11.
Increase positive power supply voltage to +7.202 vdc.
12.
If necessary, readjust R126 until red lamp goes off and amber lamp lights.
Reduce positive power supply voltage to +7.196 vdc.
13.
14.
If necessary, readjust R126 until amber lamp goes off and red lamp lights.
15.
Repeat procedure until lamps change from amber to red when positive power supply Is reduced
to 7.200 v 1 mv dc.
16.
Set positive power supply voltage to +8.000 vdc.
17.
Reduce negative power supply voltage to -7.750 v 1 mv dc.
18.
Set and hold BATTERY CHECK switch in -V position.
19.
Adjust R133 until green lamp goes out and amber lamp lights.
20.
Increase negative power supply voltage to -7.752 vdc.
21.
If necessary, readjust R133 until amber lamp goes off and green lamp lights.
22.
Reduce negative power supply voltage to -7.748 vdc.
23.
If necessary, readjust R133 until green lamp goes off and amber lamp lights.
24.
Repeat procedure until lamps change from green to amber when negative power supply voltage
is reduced to -7.750 v 1 mv dc.
25.
Reduce negative power supply voltage to -7200 v 1 mv dc.
28.
Adjust R137 until amber lamp goes out and red lamp lights.
Increase negative power supply voltage to -7.202 vdc.
27.
28.
If necessary, readjust R137 until red lamp goes off and amber lamp lights.
29.
Reduce negative power supply voltage to -7.198 vdc.
30.
If necessary, readjust R137 until amber lamp goes off and red lamp Iights.
31.
Repeat procedure until lamps change from amber to red when negative power supply Is reduced
to 7.200 v 1 mv dc.
32.
Release BATTERY CHECK switch.
2-54
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