FECO 3000 # 60

	FECO:	3000 # 60
	MODIFICATION No:	N/A
	PRODUCT:	NCR 3446, S46, 4300
	SUB-ASSEMBLY	N/A
	ESTIMATED MAN HOURS	N/A
	CLASS OF CHANGE:	INFORMATIONAL
	REASON FOR CHANGE:	INCOMPATIBILITY OF SIMMS

1.Explanation

    There is a compatibility problem when mixing 60NS and 70NS speed SIMMSs, in the
    4300. The most at risk units are those that are shipped without fully populated memory
    boards with 32MB SIMMS (ncr ref f/k105) and an upgrade kit (ncr ref f/k104); is ordered
    to add 16MB SIMMS.

    In certain cases the SIMMS will have to be replaced to ensure that they are all the same
    speed.

2.Mixing SIMMS can give a SIMM BIOS error message on boot up.

3.You are to examine the part numbers on the existing 32MB SIMM modules to determine
    whether th SIMMS have the new 60NS part number (006-3301866), or the old 70NS part
    number (006-2007119).

    If they have the old part number, then the existing 32MB SIMMS will need to be replaced
    before the new 16MB SIMMS (from ncr kit f/k104) may be installed.

4.When all the new SIMMS are ready for installation; install the new 32MB SIMMS into the
    first bank (bank 1). Then install the new 16MB SIMMS into the second bank (bank 2).

5.You are to ensure that 60NS and 70NS SIMMS are not mixed in the 4300.

    (tech serv ref 97/16

    Cssb 96-0055)

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