IBM N6270, Hardware And Service Manual

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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
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.
3. Disconnect the right and left cable management arms from the controller
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.
4. Loosen the thumbscrew on the cam handle.
5. Pull the cam handle downward and slide the controller module out of the
system.
Removing a PCIe card
To remove a PCIe card from the system, you must perform a specific sequence of
steps.
Procedure
1. Loosen the thumbscrew on the controller module side panel.
2. Swing the side panel open until it comes off the controller module.
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IBM System Storage: N6200 Series Hardware and Service Guide