IBM EXP400 Type 1733, Hardware Maintenance Manual And Troubleshooting Manual

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4. Squeeze the bridge-card cover tabs and pull it off.
Bridge-card tray
Tray handle
Bridge-card cover
5. Lift the tray handle and pull the tray that contains the bridge card out of the
bridge card bay.
6. Hold the new bridge card tray so that the tray handle is at the top of the bridge
card tray and pointing outward.
7. Gently slide the tray that contains the bridge card into the bridge card bay.
8. Push down the tray handle to lock the bridge card into place.
9. Replace the bridge card cover by squeezing each of the four tabs, locking the
cover into place.
10. Turn on the expansion unit. See “Turning on the expansion unit” on page 11.
Replacing an ESM
You can replace a hot-swap ESM and SCSI cable without turning off power to the
expansion unit.
Note: If your are replacing a left ESM that has failed, read the following
information:
v
If you hot-swap the ESM that has failed, the new ESM will automatically
assume the previous configuration switch settings.
v If you remove the left ESM that has failed and then turn off the expansion
unit, the configuration returns to the switch settings of the new left ESM.
Complete the following steps to replace an ESM:
1. Read “Installation guidelines” on page 23and the safety information beginning
on page 37.
2. Disconnect the SCSI cable from the ESM.
SCSI cable
ESM
Handle
Thumbscrew
3. Loosen the thumbscrew on the left side of the ESM that you want to replace.
4. Rotate the handle out and to the right.
Chapter 4. Installing and replacing components
27