IBM THINKPAD S05L-1270-01 - Manual (Page 451)

Note: The device ID and error codes are used to indicate
the detail portion of the FRU that caused the error.
If replacing a FRU does not correct the problem,
see the device ID or error code from the previous
failure. If they have changed, the cause might be
because the new FRU is defective or that the FRU
was incorrectly installed.
If the problem persists after replacement of the FRUs, go
to “Undetermined Problems” on page 447.
FRU Code FRU
63 1. Reseat the hard disk drive (HDD-4).
2. Hard disk drive (HDD-4)
70 PCMCIA-2 (replicator)
71 PCMCIA (UltraBay)
72 1. Reseat the PCMCIA flexible cable.
2. PCMCIA slot assembly
90 CD-ROM drive
91 External CD-ROM drive
ThinkPad 765D (9546), 765L (9547) 439