IBM 7870B4U Service Manual page 235

v See Chapter 4, "Parts listing," on page 41 to determine which components are CRUs and which components
are FRUs.
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Error code Description
215-904-xxx Failed the optical drive self test due to a
possible read error.
Action
1. Insert a new CD or DVD into the optical drive
and wait for 15 seconds for the media to be
recognized; then, rerun the test. See "Diagnostic
tools overview" on page 101.
2. Make sure that the cable for the optical drive is
securely connected at both ends of the cable. See
your BladeCenter documentation for
information about the optical drive (media tray).
3. Make sure that the cable for the optical drive is
not damaged; then, replace the cable if damage
is present. See your BladeCenter documentation
for information about replacing the optical drive
(media tray).
4. Rerun the test. See "Diagnostic tools overview"
on page 101.
5. For additional troubleshooting information, go
to http://www.ibm.com/support/
docview.wss?uid=psg1MIGR-41559.
6. Rerun the test. See "Diagnostic tools overview"
on page 101.
7. Replace the CD or DVD drive. See your
BladeCenter documentation for information
about replacing the optical drive (media tray).
8. If the failure remains, collect the data from the
DSA event log and send it to IBM Service. For
information about contacting and sending data
to IBM Service, see "Hardware service and
support" on page 236.
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Chapter 6. Diagnostics