14
Troubleshooting Guide
Unit will not pass Pass/Fail Point
adjustment when the EUT has a non-
detachable power cord
Cord is too long. Check Table 1-2.
Blue light does not light.
Blue light is the pilot light for secondary AC
power. Check for proper operation. If unit does
not work, check supply voltage and fuse. If unit
works correctly, replace pilot light with 14V type
73 bulb.
Red/Green lights do not work.
Check for proper operation by following steps 1-
3 in "Adjusting the Pass/Fail Point using the
supplied Test Cordset". Press the Test Button
and measure the voltage across the calibration
resistor. If the unit is working correctly, it
should be the set current level divided by 10 (i.e.
25 amps test current yields 2.5 volts across the
resistor). If unit works correctly, go to next
paragraph. If not, conduct Power Supply check.
If Red light burns out, neither light will light. If
green light burns out, red light will still light. To
check for burned out bulb, switch bulbs to
determine which one is defective, then replace
with 6.3V type 86 bulb.
Summary of Contents for GF-30AC-T
Page 1: ...GF 30AC T Ground Circuit Tester Instruction Manual...
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