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Baker Instrument Company
The Measure of Quality
DIGITAL TROUBLESHOOTING PROCEDURES
&FAULT LISTING
1. Knurr case removal.
2. Rittal case removal.
3. A/D board, I/O board, and controller board access instructions.
4. Voltage Busline and Crystal Checkout.
5. Open Ground fault indicator lamp lit.
• Open Ground circuit disable instructions for 6kV, 12kV, 24kV, D-Series
testers.
6. Hipot Trip fault indicator lamp lit.
7. Hipot Current Bar display not present.
8. CRT blank when PTT button depressed/surge mode.
9. Hipot voltage bar display not present.
10. Seconds/div, volts/div, µA/div, or function display incorrect.
11. Printer does not work properly.
12. No Baker logo displayed.
13. No Hipot voltage at test leads.
14. No surge voltage display.
15. Voltage drops when PTT button released.
16. Zero Start Interlock does not engage.
17. PI Value or current measurement inconsistent.
18. Display locked up after self-test.
19. Display unreadable and flashes on/off, does not initiate self-tests.
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