Section 5: Troubleshooting 5.4 Troubleshooting Procedures
0101-8242-0, Rev. C 5-27 CV-6SLX User Manual
DANGER: HIGH VOLTAGE
Before performing the following procedure, perform the procedure described in
section 5.4.1.
Table 5-18 HVPS OVERTEMPERATURE LED lights red
Conditions indicated: One or more of the following: IGBT temp > 678 C, heat sink Temp >778 C, fan
stopped, fan rotating too slowly
Symptoms
• TCS displays PSU1_FAIL_ALM (= Power Supply Control Is On failure alarm)
• HVPS Front Panel: OVERTEMPERATURE 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 #12 in Appendix A.
1. Incorrect or fluctuating line voltage
1. Check input line voltage.
2. Fault condition(s) whose investigation
requires removal of HVPS top cover
2. Contact Temescal Field Service.
DANGER: HIGH VOLTAGE
Before performing the following procedure, perform the procedure described in
section 5.4.1.
Table 5-19 Fan fails to rotate when HVPS is powered up
Symptoms
• TCS displays PSU1_FAIL_ALM (= Power Supply Control Is On failure alarm)
• HVPS Front Panel: OVERTEMPERATURE and POWER SUPPLY FAULT LEDs light red
• EBC: Fault LED lit in High Voltage section of Diagnostics screen
1. Fan is mechanically stuck
1. Check to see whether fan is clogged with dust or dirt. Excessive dust build-up
around edges of fan will prevent it from moving. Clean and blow out dust. Restart
power supply.
2. Fault condition(s) whose investigation
requires removal of HVPS top cover
2.
Contact Temescal Field Service.
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