CSPP Capacitor Charging Unit Operation Manual
CSP-CSPP-8000/2
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Page
37
of
59
6. Troubleshooting Guide
POWER SELECT SWITCH SHOULD BE LEFT ON 50 JOULES
This section is to be carried out by trained personnel only and undertaken in
a safe environment. A transducer or dummy load should be connected to the
unit, prior to these tests.
Problem
Possible Fault
Condition
Test
Action
Unit fails to discharge
with High Voltage and
EOC LEDs on.
No Key Input to CSP
Unit.
Check connection from
key source.
-
-
Key LED flashing & LED
2 on control brd is
flashing.
Check connection to /
from thyristor Int Brd.
Check for presence of
TTL trigger pulse with
oscilloscope on ZD1 on
Thyristor Int Brd.
Repair cabling if
required.
-
If all LEDs are correct
and load is properly
connected, there may be
a problem with the
thyristor.
Check 5Vdc on Thyristor
Int Brd.
Replace thyristor.
High Voltage LED will
not light after pressing
„
HV ON’
.
Remote / local Switch
switched to remote, not
allowing operator to turn
HV on from the unit.
Check Local / Remote
Switch.
Change if required.
End Of Charge LED fails
to light when unit is firing.
CSP is being fired too
quickly.
Slow firing rate and
observe EOC LED.
Slow the firing rate until
EOC LED is flashing
allowing capacitors to
reach full charge.
Unit fails to discharge at
50J setting.
Capacitor / Relay
problem.
Listen for 100J relay to
click in when HV ON
button is pressed.
Check HV is OK by
trying on a different
power setting. (200J). If
relay clicks in, and unit
operates at different
power setting, a faulty
capacitor could be the
problem.
Substitute capacitor.
