Zippy R2W-6500P - Manual (Page 14)

TTL signal :
Sink current max. 5mA
Source current max. 50uA
Low Active --- Defective
High --- Normal
1.11 TROUBLE SHOOTING
If you have followed these directions correctly, there should be no problem
occurred. Some common symptoms are: the system doesn’t work, buzzer sounds,
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 systems 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 each power cord been well plugged into the inlet?
Suppose the above conditions happen, please unplug the power cords, wait for 2
~ 3 minutes for releasing the protection state, then test it again.
c. If buzzer still sounds or the LED shows power module is defective, please
locate the defective power module, 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.
d. If you can not fix the problem, please contact with your vendor for supporting.
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