Chapter 7: Service and troubleshooting
EST3X Technical Reference Manual 171
4. Repeat step 3 five times; however, the fifth time leave AC power connected.
The LCD should display “Panel Service Utility ... waiting for SDU download.”
5. Open the 3-SDU project and compile the rules.
6. Run a database conversion, and then download the database to the panel.
7. Reconnect battery wiring to the power supply.
Note: The panel will restore to normal state if there are no discrepancies
between the database and installed equipment, and all hardware is functioning
correctly.
Hardware problems
Hardware problems are typically identified by an intermittent or total failure of a
device. The problem may occur within an equipment cabinet or with field wiring
and devices.
The quickest way to locate a hardware problem is by selectively isolating portions
of the system and observing the results of the isolation. By isolating smaller and
smaller portions of the system, hardware faults can usually be located.
Substituting hardware
WARNING: Electrocution hazard. To avoid personal injury or death from
electrocution, remove all sources of power and allow stored energy to discharge
before installing or removing equipment.
Caution: Circuit boards are sensitive to electrostatic discharge (ESD). To avoid
damage, follow ESD handling procedures.
The local rail modules in the EST3X life safety network are microprocessor
based. The single and dual Signature loop controller modules, SFS1-CPU Main
Board, 3-AADC1 Analog addressable Device Controller module, and 3X-PMI
Paging Microphone Interface all have “flash” memory, which is used to store the
operating firmware. The flash memory is empty when the module is shipped from
the factory. Because the content of each module is specific to its cabinet location,
do not substitute these modules without downloading the new cabinet
configuration database.
Along with the information above, the following is a list of other substitution and
replacement rules.
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