5.4 Troubleshooting Procedures
Section 5: Troubleshooting
CV-6SLX User Manual
5-24
0101-8242-0, Rev. C
DANGER: HIGH VOLTAGE
Before performing the following procedure, perform the procedure described in
section 5.4.1.
Table 5-14 HVPS HV OVERVOLTAGE LED Lights Red
Condition indicated: HV Output Voltage Is Above Maxiumum (i.e., 105% of Setpoint)
Symptoms
•
TCS displays
PSU1_FAIL_ALM
(= Power Supply Control Is On failure alarm)
•
HVPS Front Panel:
HV OVERVOLTAGE
and
POWER SUPPLY FAULT
LEDs are lit
•
EBC:
Fault
LED lit in High Voltage section of Diagnostics screen
For additional information about this fault mode, see Ishikawa Diagram #9.
Possible Cause
Procedure
1. Incorrect or fluctuating line voltage
1. Confirm input line voltage
2. Faulty or loose cable connections.
2. Make sure that all power module and FPS cable connections are correctly and
securely made.
3. Emitter damaged
3. Follow instructions in gun manual to troubleshoot emitter issues.
4. System improperly grounded for HV. 4. Make sure that grounding instructions in e-gun manual have been correctly
implemented.
If preceding steps have failed to correct the fault, perform the following procedure:
1. Switch off the power supply.
2. Disconnect HV output cable from HVPS J1.
3. Switch on the power supply and the HV and leave them switched on for no more than 9 seconds, observing whether the
symptom persists during that interval.
CAUTION
DO NOT leave the high voltage on for more than 9 seconds with the HV cable disconnected. Doing so will
result in the emitter’s filament burning out.
4. If the symptom is not in evidence during Step 3, troubleshoot the emitter assembly, following the instructions in the e-gun
manual. If the symptom persists during Step 3, reconnect the HV output cable to HVPS J1, switch the power supply back
on, and proceed with the troubleshooting steps described below.
Possible Cause
Procedure
5. Broken or shorted emitter.
5. Check emitter for breaks and check emitter assembly and associated leads
for possible grounds.
6.
Fault condition(s) whose investigation
requires removal of HVPS top cover.
6. Contact Temescal Field Service.
