Power supply software changes, Prom (u12), Programming and testing – Fire-Lite FCPS Series Field Software Change Procedure User Manual
Page 2: Prom replacement
Document 53217 Rev A ECN 07-893 12/05/07
2 of 2
PROM (U12)
Programming and Testing
Test the Power Supply after PROM replacement.
Power Supply Software Changes
The following Table summarizes the Power Supply software changes, specifying these changes by PROM
Number and Release Number:
PROM Replacement
Observe proper orientation of any IC removed or installed! To replace the PROM, complete the following
steps:
1. Remove all power (battery first and then AC) before proceeding with PROM replacement.
2. If necessary, disconnect any installed option modules which may inhibit access to PROM.
3. Locate U12 (center right of the board).
4. Gently loosen and remove the PROM from U12.
5. Install the replacement PROM in location U12. Observe proper orientation! The dot on the IC
should be positioned to the top and the flattened corner of the IC should align with the flat-
tened corner of the socket. Use care to insure that the PROM's pins are not bent or broken
during insertion.
6. Reconnect any option modules which were removed in Step 2.
7. Reconnect power (AC first and then batteries).
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