Section 5847 User Instructions
Issue AL, July 24, 2006 Spec. Nos. 586505000 and 5865055000 (Model LMS1000)
Page 5-2 Chapter 5. Troubleshooting and Repairing LMS1000
This document is property of Emerson Network Power, Energy Systems, North America, Inc. and contains confidential and proprietary information owned by Emerson Network Power, Energy
Systems, North America, Inc. Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited.
Warning: Installation or removal of the circuit cards requires careful handling.
Before handling any circuit card, read and follow the instructions
contained on the Static Warning Page located at the beginning of this
manual. DC input power should always be removed from the circuit
card before inserting or removing the circuit card. To avoid possibility
of circuit card damage from static discharge, a static wrist strap
grounded through a one megohm resistor should always be worn when
handling the circuit cards.
PRELIMINARY TROUBLESHOOTING
Before attempting to troubleshoot the system, it must be determined that a failure has
occurred in the system, and not in any equipment connected to it. Eliminate any
interconnected equipment as a trouble cause before proceeding.
Once trouble has been isolated to the system, and before attempting to replace any
circuit cards, various visual and operational checks should be made to eliminate any
obvious failure causes. Before starting any troubleshooting procedure, check the
following:
Danger: Battery voltage may be present at the DC input terminals. Servicing
personnel must observe all safety precautions normally associated with
the maintenance and repair of electronic equipment, and must avoid
direct contact with any energized electrical termination.
a) Check to be sure DC input power is available to the system.
b) Check all electrical and alarm connections for disconnected or loose
terminations.
c) Insure that all circuit cards are properly seated.
Component failures are sometimes evident during visual inspection of the circuitry.
Obvious trouble symptoms such as loose connections; overheated, discolored, or burned
components; open fuses; or burned and melted wire insulation should be corrected and
the cause determined before proceeding with more detailed troubleshooting procedures.
DIAGNOSTIC MODE
The system contains a self diagnostic feature. If the system automatically enters the
diagnostic mode (distinguished by RED flashing LEDs or no response to access
attempts), contact an Emerson Network Power service facility. Contact information is
provided in a Service Information Document (Section 4154). The Service Information
Document can be accessed via the CD (Electronic Documentation Package) furnished
with your system.
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