Section 5: Troubleshooting
5.3 Ishikawa Diagrams
0101-8242-0, Rev. C
5-11
CV-6SLX User Manual
Ishikawa Diagram #9: HV Overvoltage Fault
Ishikawa Diagram #10: Setpoint Overvoltage Fault
FPS
Mains
HV relay defective
Fluctuating line voltage
Power Supply
Loose cables to FPS
Improper grounding
Defective feedback interconnection
cable from A2 HV Output PCB to A3
HV Regulator PCB
Other
Emitter damaged
Consequence
Possible Causes
Loose cables
HV Overvoltage LED
lights red
(see Table 6-14)
Defective HV
Output PCB
Incorrect mains input voltage
or phase missing
HV relay control voltage missing.
J103 pin 6 = +24 VDC
Interface
Power Supply
Incorrect nominal request
voltage. 1V = 1kV
R7 on A3 HV Regulator
PCB misadjusted
Consequence
Possible Causes
Setpoint Overvoltage LED
lights red (see Table 6-15)
HV setpoint
above 10.5 kV
5-14)
5-15)