Fire-Lite MS 5012 Field Software Change Procedure

Field Software Change 50194 Rev B 3 16 95 ECN 95 133 procedure outlines the mechanical installation steps required to install a PROM in the MS 5012 Change 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 responsible 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 the breaker on the fire control panel s power supply Wait 60 seconds to allow for capacitive discharge before touching any of the system s compo 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 flattened and dot on the body of the IC and the relationship to the flattened corner on the IC socket The PROM must be installed in the same manner as the PROM removed Failure to observe this 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 Gently remove membrane keypad from circuit board but do not disconnect cable from circuit Note that the keypad s four supports snap into the circuit board Locate U8 center of the board Gently loosen and remove the PROM from U8 Install the replacement PROM in location U8 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 U8 and Testing and test the MS 5012 after PROM replacement of 3 50194 Rev B ECN 95 133 3 16 95 Changes following Table summarizes the MS 5012 software changes specifying these changes by Number and Release Number Release Summary of Changes Release disabling of reports to either Central Station runaway reporting of Phone 1 Communications Failure to Phone 2 to turn on Notification Appliances for 4 seconds on activation of each zone Subsequent activation of same zone turns Notification Appliances on 1 second Slave Mode by having Zone 2 turn on the Trouble LED trouble output trouble piezo and not turn on the Notification Appliance output 50194 Rev B ECN 95 133 3 16 95 of 3