Lucent Technologies -48V CPS4000/CPS4000 PLUS Cabinet Power System
Issue 13 December 2000 Troubleshooting 9 - 1
9 Troubleshooting
Overview
Safety Review all safety instructions and warnings before troubleshooting the
CPS.
Flowcharts The following flowcharts list indications and the corrective action(s) to
take when a rectifier or converter does not deliver power. Match specific
site conditions to those listed in the chart. If none of these corrective
actions remedies the problem, call your local RTAC representative at
1-800-CAL-RTAC (1-800-225-7822).
Warning
The modules intended for use in the CPS shelf are not suitable
as disconnect means and the spacings of the shelf backplane
do not provide adequate spacing to act as a disconnect means.
Before working on any output circuit, turn off ac service
circuit breakers to the rectifier shelf and turn off circuit
breakers on the cabinet output. Disconnect batteries.
AC input voltages are provided to the CPS via multiple input
cables. Ensure that the circuit protector for each ac input is
disconnected while installing or servicing this equipment.
Hazardous energy levels can exist on dc output (from power
supply outputs and batteries). Make sure batteries are also
disconnected.
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