Zippy MRW-6420P - Manual (Page 17)

1. 11 TROUBLE SHOOTING
If you have followed these directions correctly, there should be no problem
occurred. Same common symptoms are: the system doesn’t work, buzzer sound,
work for a very short period, etc., please try the following steps to verify and
correct it:
1. Check all the connections (correct pinouts, loose connections, wrong
direction, etc).
2. Check for short-circuits or defective peripherals by unhooking each
peripheral once at a time. When the system functions again, you have solved
the problem.
3. Once you hear the buzzer sound or see the LED with RED light, please be
aware of :
a. If the load is under the minimum / over the maximum load of each channel
(please refer the Sec. 1.7 specification)?
b. If AC/DC Input voltage been set correct?
c. If each power cord been well plugged into the inlet?
Suppose the above condition been happened, please unplug the power cords,
wait for 2 ~ 3 minutes for releasing the protection state, then test it again.
d. If buzzer still sound or the LED shows power module is defective, please
locate which power module is defective, perform hot-swap procedure (please
refer to the Sec. 1.9 Hot-swap procedures), sent the defective power module
to your vendor for RMA operation.
e. If you can not fix the problem, please contact with your vendor for
supporting.
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