Replacing An Esm Board - IBM Netfinity EXP300 Hardware Maintenance Manual

There is one switch card located between the two power supply/fan units at the back
of the unit. Complete the following steps to remove the switch card:
Installing a switch card: Attention: Before installing a new switch card, make sure
that the switch card settings are the same as the settings on the switch card being
replaced, and that the expansion unit is turned off. Refer to "Turning the expansion
unit on and off" on page 3. Failure to do so will result in loss of data.
There is one switch card located between the two power supply/fan assemblies at the
back of the unit. Complete the following steps to install the switch card:

Replacing an ESM board

To replace an ESM board CRU in the EXP300 expansion unit, follow the instructions
for removing an ESM board and installing an ESM board.
Removing an ESM board: There are two hot-swap ESM boards at the back of the
unit. You can remove the ESM board and SCSI cable without turning off power to the
EXP300. Complete the following steps to remove an EXP300 ESM board:
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IBM Netfinity EXP300 - Type 3531 Hardware Maintenance Manual
1. Turn off the expansion unit.
2. Locate the blue push pin 2 at the bottom of the switch card tray.
3. Pull out the blue push pin 2 .
4. Pull up on the switch-card tray handle 1 .
5. Slide the tray that contains the switch card out of the switch card bay.
1. Make sure the expansion unit is turned off.
2. Hold the switch card so the blue push pin 1 is at the bottom of the card and the
tray handle 2 is to the left of the card.
3. Hold the tray handle 2 up and slide the card 3 into the bay until it stops.
4. Push the tray handle 2 all the way down; then, push in the push pin 1 .
1. Power down the server attached to the ESM Board.
2. Disconnect the SCSI cable 1 from the ESM Board.
3. Locate the orange push pin 4 to the left of each ESM board.
4. Pull the orange push pin 4 out.