Vanguard Auto-Ohm - Manual (Page 18)

14
APPENDIX A
Auto-Ohm Troubleshooting Guide
Item Symptom Possible Problem Solution
1 Reading is incorrect. 1. Poor connection at the test
clips.
2. Broken sensing leads.
1.Check connections to ensure teeth of
voltage-sensing and current clips are
firmly in contact with the device under
test.
2. Inspect sensing cables.
2 No Test Current.
(Current % read zero)
and resistance reading=0 1. No test current going
through the device under test.
2. Drive circuit not working
1. Check Connection to the device
under test.
2. Run Calibration Test.
3 Have test current but
resistance reading = 0. 1. Broken sensing leads.
2. Reverse sensing leads.
1. Inspect sensing leads.