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Observe the Following Admonishments
DANGER! AC and DC power may be present. This system operates from DC input power. Various AC
and/or DC voltages may be connected to the input/output circuit cards contained within the system.
Performing the following procedures may expose service personnel to hazards. These procedures
should be performed by qualified service personnel familiar with the hazards associated with this type of
equipment. These hazards may include shock, energy, and/or burns. To avoid these hazards:
a)
The tasks should be performed in the order indicated.
b)
Remove watches, rings, and other jewelry.
c)
Prior to contacting any uninsulated surface or termination, use a voltmeter to verify that no voltage
or the expected voltage is present.
d)
Wear eye protection, and use recommended tools.
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 a Vertiv Co. 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.
Vertiv™
| NetSure™ LMS Data Processing Unit User Manual (Section 5847) | Rev. ZA
520
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