5.4 Troubleshooting Procedures Section 5: Troubleshooting
CV-6SLX User Manual 5-22 0101-8242-0, Rev. C
DANGER: HIGH VOLTAGE
Before performing the following procedure, perform the procedure described in
section 5.4.1.
Table 5-12 HVPS RAIL UNDERVOLTAGE LED Lights Red
Condition indicated: Rail voltage below 220 V dc (on 208-V units) or 427 V dc (on 400-V units)
NOTE: Nominal rail voltage ranges are 264-323 V dc (for 208-V units) and 509-622 V dc (for 400-V
units)
Symptoms:
• TCS displays PSU1_FAIL_ALM (= Power Supply Control Is On failure alarm)
• HVPS Front Panel: RAIL UNDER VOLTAGE 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 #7.
Possible Cause Procedure
1. System improperly grounded for HV. 1. Follow grounding instructions provided in e-gun manual.
2. Incorrect line voltage. 2. Confirm line voltage as per manual.
3. Incorrect line phase. 3. Confirm line phase as per specifications.
4. Faulty or loose cable connections.
4. Make sure that all power module and FPS cable connections are correctly
and securely made.
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. Fault conditions whose investigation
requires removal of HVPS top cover.
5. Contact Temescal Field Service.
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