TB 9-6625-381-24
Figure 2. Right-side view - adjustment locations.
10. Insulation Resistance
a. Performance Check
(1) Set SELECTOR switch to INSULATION RESISTANCE and megohm range
switch to MEGOHMS X1.
(2) Remove dust cover from TI.
(3) Adjust R23 (fig. 1) for 10 mA indication on TI meter.
(4) Turn DIAL CONTROL fully ccw and operate KEY switch. Indication on TI
meter will remain at 10 mA.
(5) Set SELECTOR switch to LEAKAGE.
(6) Connect equipment as shown in figure 3.