23
TMN/TMP SERIES
OPERATING MANUAL
Reconnect the Remote Enable wire. This completes the rack setup and
testing.
21.0
TROUBLESHOOTING GUIDE
21.1
If you encounter difficulties in getting the modules or complete rack to
operate properly, go through the following troubleshooting guide.
21.2
Table 21-1. TMN/TMP Module and Rack Troubleshooting
21.3
If none of the above actions solves the problem, call UNIPOWER Corpo-
ration at 954-346-2442 Ext. 400 for help and try to resolve the problem
over the telephone.
No output, AC Good
and DC Good LEDs
off.
No output, DC Good
LED off, AC Good
LED on.
No output, DC Good
LED off, AC Good
LED on.
No output, DC Good
LED off, AC Good
LED on.
SYMPTOM
POSSIBLE CAUSE
No input power.
Remote Enable
in OFF mode.
Shorted output.
Overvoltage
protection
(OVP) has
latched.
Check connection to AC source. Check AC
source circuit breakers.
Make sure J1 Pin1 (Remote Enable) is
connected to Pin 22 (Signal Common).
Check for short and remove.
Reset output by cycling the AC input OFF
for 20 seconds and then back ON.
ACTION TO TAKE
No output, DC Good
LED off, AC Good
LED on.
No output, DC Good
LED off, AC Good
LED on.
Overtemperature
protection is
activated on one
or more mod-
ules.
Output load is
too great for the
number of
modules.
Allow modules to cool down for about 10
minutes. They will then start up automati-
cally. Check to see if the cooling fans are
operating.
Reduce load to proper level.
