Sun Microsystems Netra X4200 M2, Руководство по обслуживанию

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66 Netra X4200 M2 Server Service Manual • May 2007
Replacing the GRASP Board
Follow these steps to remove and replace the Graphics Redirect and Service
Processor (GRASP) board.
1. Prepare the server for GRASP board removal.
■
“Powering Off the Server” on page 28
■
“Disconnecting Cables From the Server” on page 29
■
“Removing the Server From the Rack” on page 30
■
“Performing Antistatic Measures” on page 31
■
“Removing the Top Cover” on page 33
■
“Removing the PCI Tray and PCI-E Ribbon Cables” on page 34
■
“Removing the PCI-E Cable Hold-Down Bracket” on page 36
Removing the GRASP Board
1. Power off the server as described in “Powering Off the Server” on page 28 .
Note – Remove AC/DC power supply unit inlet cables and attach a wrist strap to
the button-snap grounding post inside the chassis just behind the mass storage
assembly (see
FIGURE 3-10
for the location).
2. If the server is in a rack, slide it far enough from the rack so that you can
remove the cover. If you cannot safely view and access the component, remove
the server from the rack.
3. Remove the cover as described in “Removing the Top Cover” on page 33 .
Caution – There is a power status LED (CR1) on the GRASP board that indicates
whether 3.3V standby power is reaching the GRASP board. The GRASP board is not
hot-pluggable and should never be removed while this LED is lit.
4. Squeeze the plastic standoff that protrudes through the GRASP board to press
the standoff’s locking tabs. See procedure inset 1 in
FIGURE 3-45
.
If you have difficulty pressing the locking tabs with your fingers, you can use a
pair of long-nosed pliers.