6CP50/10-3
7-2
TROUBLESHOOTING
Specific Problems (cont’d)
5. Voltmeter inoperable?
- High voltage output shorted to ground.
- No output from the ±15VDC power supply on PCB 1257.
- Meter defective.
- No high voltage present at the test set output.
- No +5VDC power to the meter from PCB 1257.
6. No output voltage from high voltage section?
- Defective metering circuit.
- No input to voltage regulator section, possible problems with K3 contacts, variable
transformer, or with CB1.
- Shorted high voltage output.
- Defective high voltage output transformer.
- Defective TX1 cable or connector.