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FRU
P/N <- ??? -> OPT P/N - MKT P/N Original page
Welcome to the gender-bender, heart's in a blender side of
IBM. Numbers may change over the years, due to Engineering
Changers, addition of more supported machines, price
changes, mere whims, whatever. So, you may find an unknown
P/N that looks like it might work, but it isn't listed.
Documentation of PS/2 stuff ranges from real early
(1987) to very late (1995-ish), and during that time, IBM
updated the P/Ns to reflect new models, updated parts, and
deleted obsolete / outdated P/Ns.
So, for a "missing" P/N, search the internet, ask a
question on comp.sys.ibm.ps2.hardware, compare the closest
match... IBM used a FRU / OPT combination, where the FRU
and OPT P/Ns differed by one or two (say 53G3996 /
53G3997). Sometimes, the FRU and OPT are the same.
Note: FAIK, IBM used
every possible combination of FRU / OPT / MKT / MFR P/Ns
just to confuse us. You may see one or more stickers, and
the numbers may be clearly identified as "FRU"... or maybe
not.
Where, what is different ...
FRU P/N : Field Replaceable Unit
- part number (Spare Part).
This is the smallest part a
technician is allowed/can replace.
A FRU package will be shipped
without any supporting material.
Examples:
Ordering SIMM memory with the OPT P/N - you may
receive two SIMMs
(depends on machine type, e.g. 64MB SIMM
OPTION memory = 2x 32MB SIMMs.)
Otherwise
if you use the FRU P/N, only one SIMM will be received (1x
32MB), this is because a FRU is defined for repair
actions, and normally, two SIMMs at the same time will not
be defect.
If you
order a PCMCIA modem-card and use the FRU P/N, you will
not receive any cable, adapter, software and
setup/installation manual with this FRU package.
RULE for FRU P/Ns - a FRU-part
should/cannot be used for machine/option upgrades.
OPT P/N : OPTION part number.
A Customer (end-user) will
receive an OPTION package (OBI - Options By IBM)
There is no special knowledge needed
for OBI installation.
A step by step, detailed instruction is
included in the User's Guide.
Such an OPTION-package will include:
Warranty
Certificate Registration sheet
User's
Guide Installation, setup and test instructions
Software
Diskette and/or CD-ROM with driver and/or software needed
Hardware
part(s) Mounting material - cable, bezel, screws ...
MKT P/N : MARKETING part number
This MKT P/N can define a MACHINE
or OPTION upgrade package.
There is some special knowledge needed
for installation - however, installation
instructions are included
Such a package can include:
Warranty
Certificate Registration sheet
Installation/test instructions
Software
Hardware
part(s)
MFG P/N : MANUFACTURE part number
Such (rare) MFG P/N can not be
used for parts order.
(The MFG P/N is only known/used
for machine production, in plant's.)
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