IBM SYSTEM STORAGE EXP3000 - INTEROPERABILITY MATRIX 10-19-2010, Manual, Page: 45 / 64

Before you replace a release tab, read the following important information:
v In this procedure, the term ESM refers to an ESM or ESM filler panel.
v
Make sure that you have a size #1 or #0 Phillips screwdriver.
To replace a release tab, complete the following steps:
1. Read the safety information that begins on page iii and “Installation guidelines”
on page 26.
2. Make sure that it is safe to proceed:
v
If you are replacing the release tab on the only ESM in the EXP3000, make
sure that the EXP3000 is shut down for maintenance.
v If you are replacing a power-supply release tab, make sure that the power
supplies are providing redundant power (on both power supplies, the ac
power LED and dc power LEDs are lit, and the fault LED is off). If the power
supplies are not providing redundant power, resolve the redundancy problem
first, or wait until the EXP3000 is shut down for maintenance, before you
replace the release tab.
3. Remove the ESM or power supply from the EXP3000 chassis. See “Replacing
an ESM” on page 29 or “Replacing a hot-swap power supply” on page 30.
4. Close the handle to move it out of the way.
The following illustration shows how to remove the release tab on a power
supply.
Handle
Release tab
Screw
5. Use a #1 or #0 Phillips screwdriver to remove the screw that secures the
release tab to the ESM or power supply; then, remove the release tab. Save the
screw to install the new release tab.
6. Insert the alignment pins on the release tab into the holes in the left front of the
ESM or power supply and hold it in place.
Note: The arrow on the outside of the release tab points to the right.
7. Use a #1 or #0 Phillips screwdriver to install the screw that you removed in step
5.
8. Press the release tab gently to the right and open the handle on the ESM or
power supply.
9. Reinstall the ESM or power supply. See “Replacing an ESM” on page 29 or
“Replacing a hot-swap power supply” on page 30.
Replacing a drive compatibility key
Each hard disk drive bay contains a drive compatibility key, which helps to ensure
that you install only a supported drive in the bay.
Chapter 4. Replacing components
33