1.9 Troubleshooting & Maintenance
SYMPTOM
COUNTERMEASURE
No power?
After plug main connector, such as 24-pin or 20-pin and aux.
connectors if needed, to motherboard socket, make sure AC
power cord gets AC line source that is on wall outlet, to this
product power supply. If AC power cord gets AC line source
through power bar or UPS, turn on these devices first.
Check I/O switch of power supply panel to “I” or “ON”.
Boot system from computer case I/O.
Check product specifications and calculate actual current
requirements of each DC voltage. Make sure these requirements
fall within the minimum and maximum range of power supply.
(i) If the current requirements are below the minimum load
spec., the power supply may not start up. Increase load. (ii) If
the current requirements are over the maximum load spec., our
over protection circuitry will latch and shutdown the power
supply. Reduce load or use larger capacity power supply.
The power supply could be latched by self-protection function
(e.g. “over voltage”, “over current”, “overload”). Remove the
power cord, wait for 20 seconds or more to discharge its
electricity, then plug in the power cord again, try to restart the
computer.
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