NEC EXPRESS5800/140He, Service Manual

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4.10.5 Replacement of Management LAN Board or I/O Board
The figure shows the Server mounted on the 140Rd-4 chassis. The Server on the 140He chassis is
different only in that it is mounted longitudinally. The replacement procedure is the same for both
servers, except when specified otherwise.
Notes:
Before replacing the I/O Board, back up (save the server configuration information and the RMC
(Remote Management Controller: A-BMC) information by using the Offline Maintenance Utility.
Restore the information after the replacement.
Before the replacement, make sure that the +2.5 VDC output lamp on the I/O Board is off while
the AC cables are disconnected from the Server.
If the lamp is on, turn on the DC power of the Server once and run the POST before the
replacement. Then turn off the power of the Server again, disconnect the AC cables, and make sure
that +2.5 VDC output lamp on the I/O Board is off.
(With the lamp being on, the power is backed up by the onboard RAID battery.)
Before the +2.5 VDC output lamp can be checked, the rear access cover must be removed. The
lamp is installed below the power cage.
+2.5V output lamp
Location: 9K