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EPROM Replacement
Observe proper orientation of any IC removed or installed! To replace the EPROM, complete the following steps:
1. Make certain Software Revision and Circuit Board Revision are compatible (refer to table on page 4).
2. Once all power has been removed, disconnect any optional modules (if installed).
3. Locate EPROM U16 on newer boards or U14 on older boards (center right of the board).
4. Gently loosen and remove EPROM from the board.
5. Install replacement EPROM. Observe proper orientation! The notch or dot on the IC
should be positioned to the left for U16 in the newer boards or to the right for U14 in older boards as
shown below. Use care to insure that the EPROM's pins are not bent or broken during insertion.
6. Reconnect power supplies.
Programming and Testing
Reprogram and test the MS-9200(C)/E after EPROM replacement.
2 of 5
Rev._
U16
Rev._
U14
Document 50053 Rev M 1/10/08 P/N 50053:M
Circuit Board assembly
information (Rev.) can be
found in the upper right
corner of the circuit board.
EPROM (U16)
(newer boards)
Circuit Board assembly
information (Rev.) can be
found in the upper right
corner of the circuit board.
EPROM (U14)
(older boards)
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