Insulation Resistance Check

TB 9-4920-364-35

Figure 2. Adjustment locations -bottom view.

(9) Repeat technique of (4) through (7) above for each setting of RESISTANCE

CHECK SW-3 switch and set resistance standard to the value indicated on SW-3. TI

GALVO-1 will indicate within ±5 divisions at all SW-3 settings.

b. Adjustments. Adjust RES CHECK TRIMPOT (fig. 2) for 0 indication on GALVO-1 (R).

10. Insulation Resistance Check

a. Performance Check

(1) Adjust resistance standard for 0 ohms.

(2) Connect TI INPUT RES. INSUL. P-2 to HIGH and LOW terminals of

resistance standard using cables and insulation check adapter (BH485 and BH821, p/o TI).

(3) Set SELECTOR SWITCH SW-1 to INSUL. and SW-8 switch to RX100. If

INSULATION CHECK meter does not indicate 0, perform b (1) below.

(4) Adjust resistance standard for indication of 10,000 ohms on INSULATION

CHECK meter. If resistance standard does not indicate between 9000 and 11,000 ohms,

perform b (2) below.