Table 5-23 Hv Is Switched On But Fps Front Panel High Voltage On Led Fails To Light; Table 5-24 Fps #1 Is Switched On But Its Power On Led Fails To Light; Table 5-25 Fps #2 Is Switched On But Its Power On Led Fails To Light - ferrotec Temescal CV-12SLX User Manual

Section 5: Troubleshooting

Table 5-23 HV Is Switched On but FPS Front Panel HIGH VOLTAGE ON LED Fails To Light

Symptoms
HVPS Front Panel: HV switched on, with LEDs indicating nominal HVPS state
•
FPS Front Panel: HIGH VOLTAGE ON LED is unlit
•
Possible Cause
1. FPS is not powered up.
2. HV IS ON signal is not present at
FPSB connector J102.
3. Fault condition(s) whose investigation
requires removal of HVPS top cover

Table 5-24 FPS #1 Is Switched On but Its POWER ON LED Fails To Light

Symptoms
HVPS front panel: FILAMENT POWER LED on turns red
•
FPS #1 front panel: POWER ON LED on fails to light when FPS is switched on
•
EBC displays FPS Gun Ctl Go On Timeout alarm message
•
For additional information about this fault mode, see Ishikawa Diagram #16.
Possible Cause
1. HVPS rear panel connector J1 not
supplying 208 V ac power
2. HVPS rear panel fuses F1 and/or F2
blown.
3. Faulty FPS power cable.
4. Blown fuses on FPS input power line. 4. Check and replace fuse(s) as necessary, as described in section 5.5.
5. Fault condition(s) whose investigation
requires removal of HVPS top cover

Table 5-25 FPS #2 Is Switched On but Its POWER ON LED Fails To Light

Symptoms
HVPS front panel: FILAMENT POWER LED on turns red
•
FPS #2 front panel: POWER ON LED on fails to light when FPS is switched on
•
EBC: N/A
•
For additional information about this fault mode, see Ishikawa Diagram #16.
Possible Cause
1. HVPS rear panel connector J2 not
supplying 208 V ac power
0101-8292-0, Rev. C
1. Make sure that FPS is switched on. If switch is on, POWER ON LED is lit,
and HV is switched on, proceed to Step 2. If FPS switch is in the ON
position but the POWER ON LED is not lit, see Table 5-24.
2. Check pins J102 Pin 1 for the HV IS ON signal. If not present, proceed to
Step 3.
3. Contact Temescal Field Service.
1. Disconnect FPS power cable from HVPS J1 and check J1 for 208 V ac output. If no
voltage or incorrect voltage is indicated, proceed to Step 2. If voltage is correct,
skip to Step 4.
2. Check fuses and replace as necessary. After replacing either fuse, repeat Step 1 of
this procedure. If correct voltage is then detected at J1, reconnect power cable
between J1 and FPS #1.
3. Reconnect the FPS power cable to J1 and disconnect it from the FPS.
Measure the female end of the cable for 208 V ac. Replace cable as
necessary.
5. Contact Temescal Field Service.
1. Disconnect FPS power cable from HVPS J2 and check J2 for 208 V ac output. If no
voltage or incorrect voltage is indicated, proceed to Step 2. If voltage is correct,
skip to Step 4.
5-29
5.4 Troubleshooting Procedures
Procedure
Procedure
Procedure
CV-12SLX User Manual