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MAINTENANCE PHILOSOPHY
Summary: Soneplex maintenance philosophy is built on the collection of system information through inspection of the Soneplex modules themselves, and through software interfaces. Central office
Trouble Analysis Procedures
Trouble analysis procedures found in this document involve replacing faulty modules and obtaining alarm and status reports. Status and alarm reports are then analyzed to determine proper system operation and locate trouble.
Module Failures
APU, DLX, DS3 MUX, HLXC, MPU, ODS2, and RLX module failures are identified by status indicators and reported by system alarms. The first step in analyzing a module failure is to look for a red status LED indicator on the module. If operating the system through the Craft Interface, display the Active Alarms screen, and look for modules with a COMM FAIL or BOARD FAIL condition. Push the Reset switch on the module in question or perform a module reset through the Craft Interface. If these actions fail to restart the module, unplug and reseat the module in question. Reseating the module can correct a contact problem and avoid the return of a good module for repair. Use caution when unplugging modules, ensuring that protection switching is available for the module being removed.
Electrostatic Discharge (ESD) Protection Considerations
Modules can be damaged by static electricity that builds up in work areas, especially in areas with low relative humidity. The static buildup in work areas (on work surfaces, people, and clothing) is produced by the rubbing of objects together to produce an electrical charge.
Caution: Electronic modules can be damaged by electrostatic discharge (ESD). Before handling modules, wear an
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