Fire-Lite MS 5024 5024E Field Software Change Procedure

MS 5024 MS 5024E Software Change 50288 Rev B 12 16 96 ECN 96 496 Change procedure outlines the mechanical installation steps required to install a PROM in the MS 5024 E precautions for integrated circuits electricity can destroy integrated circuits ICs To prevent damage to the PROM a wrist strap and a PLCC IC insertion extraction tool is highly recommended The manufacturer cannot be respon for damage to the PROM as a result of improper handling Power Sources remove primary and secondary power before working on the system Disconnect battery backup power before working on the system Proceed by disconnecting AC power to the panel at the main service circuit breaker not circuit breaker on the fire control panel s power supply Wait 60 seconds to allow for capacitive discharge before touching any of the system s Reverse the procedure for powering up the system AC first then batteries Circuit Pin Conversion proper orientation of any IC removed or installed Note location of Pin 1 with respect to the corner and dot on the body of the IC and the relationship to the flattened corner on the IC socket replacement PROM must be installed in the same manner as the PROM removed Failure to observe orientation will result in destruction of the PROM Pin 1 Corner Pin 1 Corner Replacement proper orientation of any IC removed or installed To replace the PROM complete the following steps Once all power has been removed disconnect any option modules if installed Locate U23 center right of the board Gently loosen and remove the PROM from U23 Install the replacement PROM in location U23 Observe proper orientation The dot on the IC be positioned to the left and the flattened corner of the IC should align with the flattened of the socket Use care to insure that the PROM s pins are not bent or broken during Reconnect power supplies U23 and Testing and test the MS 5024 E after PROM replacement of 3 50288 Rev B ECN 96 496 12 16 96 Software Changes following Table summarizes the MS 5024 software changes specifying these changes by Number and Release Number of Changes Release enhancements as follows Entries 7 through F corresponding to times of 15 to 23 hours were added to AC Loss Delay entry in program mode Eliminated Positive Alarm Sequence and Alarm Verification in Slave Mode only Program mode was changed to correctly modify the transmission codes when Comm Format entry is altered Software Changes following Table summarizes the MS 5024E software changes specifying these changes by Number and Release Number of Changes Release 50288 Rev B ECN 96 496 12 16 96 of 3