Chapter 6 - Troubleshooting 7400 Series UPS User Manual
Troubleshooting UPS System Single Module and One plus One Systems
6310018a.02.doc
6-2
Issue 2
(02/98)
Corrective Action
When all the indications have been noted, you should refer to the
following fault interpretation charts and carry out the actions detailed
against any led whose status is abnormal. If you are unsure as to how to
undertake the actions detailed - or if several led indications are abnormal
and you are unable to distinguish between the likely cause and affects -
then seek immediate assistance from an approved service agent.
Fault Reporting
Irrespective of whether fault rectification is successful or not, report the
fault occurrence to the nearest service agent - who will then forward the
details to the manufacturer. This type of customer feedback is an
important factor in maintaining high product reliability, and also
provides important data concerning the equipment field performance.
Caution
The following diagnostic charts are designed for 'first aid’troubleshooting only. If a
problem cannot be resolved by taking the actions given then fully trained assistance
should be sought immediately.
Do not under any circumstances make internal circuit adjustments or interfere with the
circuit boards in any other way.
LS3
LS5
L
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