Removing The System-Board Tray From A 2U Chassis - IBM x iDataPlex dx340 Series Problem Determination And Service Manual

Removing the system-board tray from a 2U chassis

To remove the system-board tray from a 2U chassis, complete the following steps.
If the server contains an expansion enclosure, you remove the expansion enclosure
and the system-board tray from the chassis as one assembly.
Attention:
operate the upper system-board tray with the lower system-board tray removed or
powered off, except for servicing. When the lower system-board tray is removed or
powered-off, chassis-level system-management information is not available. For
example, chassis fan speeds and temperatures may be returned as zero values. In
this situation, the chassis will continue to operate normally, since the power supply
and fans are designed to operate independently.
1. Read the safety information that begins on page vii and "Installation guidelines"
2. If the system-board tray is operating, shut down the operating system; then,
3. If external cables are connected to the front of the system-board tray or
4. Press in the two release latches and pull the system-board tray and expansion
When two system-board trays are installed in the chassis, do not
on page 71.
press the power-control button to turn off the system-board tray (see "Turning
off the system-board tray" on page 6 for more information).
expansion enclosure, if one is attached, note where they are connected; then,
remove them.
enclosure out of the chassis.
Chapter 4. Removing and replacing server components
75