Opening The System - IBM N6270 Hardware And Service Manual

Figure 17. NVMEM LED
2. If you are not already grounded, properly ground yourself.
3. Turn off the power supplies, unplug the power cords from the power source,

Opening the system

To access components inside the controller module, you must open the system.
Procedure
1. If you are not already grounded, properly ground yourself.
2. Unplug the system cables and SFPs from the controller module, as needed, and
3. Disconnect the right and left cable management arms from the controller
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IBM System Storage: N6200 Series Hardware and Service Guide
Attention: You must perform a clean system shutdown before replacing
system components to avoid losing unwritten data in the nonvolatile memory
(NVMEM). The NVMEM LED is located on the controller module to the right
of the network ports, marked with a battery symbol. If the NVMEM LED is
flashing, there is content in the NVMEM that has not been saved to disk. You
need to reboot the controller module and proceed from the beginning of this
procedure. If repeated attempts to cleanly shut down the controller module fail,
be aware that you might lose any data that was not saved to disk.
0a 0b
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NVMEM LED
1
and remove the power cords.
keep track of where the cables were connected. Leave the cables in the cable
management arm, so that when you reinstall the cable management arm in the
controller module, the cables will be organized.
module. To release the arms, press the silver button on the power supply side
of each arm, and then remove the arm from the controller module.
c0a
0c
LNK
c0b
0d
e0b
e0a
1