Dell PowerEdge R740xd2 EMC Installation and Service Manual - Page 142

Installing the system board

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CAUTION: Take care not to damage the system identification button while removing the system board from the chassis. Figure 125. Removing the system board Next steps Replace or install the system board. Installing the system board Prerequisites 1. Follow the safety guidelines listed in Safety instructions. 2. Power off the system and all attached peripherals. 3. Disconnect the system from the electrical outlet, and disconnect the peripherals. 4. Ensure that all internal cables are routed correctly and connected, and no tools or extra parts are left inside the system. 5. Open the drive bays, remove all drives, and then close the drive bays. 6. Remove the power supply units. 7. Remove the system from the rack and place it on an ESD work bench. For more information, see the Rail Installation Guide available at www.dell.com/poweredgemanuals. 8. Remove the system cover. 9. Remove the following: a. Air shroud b. Drive cage (rear) (if installed) c. All expansion cards and risers d. Internal PERC riser e. IDSDM/vFlash module f. Optional internal USB key (if installed) g. Processors and heat sink modules h. Processors blanks (if installed) i. Memory modules and memory module blanks j. LOM riser card 142 Installing and removing system components

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CAUTION:
Take care not to damage the system identification button while removing the system board from the
chassis.
Figure 125. Removing the system board
Next steps
Replace or install the system board
.
Installing the system board
Prerequisites
1.
Follow the safety guidelines listed in
Safety instructions
.
2.
Power off the system and all attached peripherals.
3.
Disconnect the system from the electrical outlet, and disconnect the peripherals.
4.
Ensure that all internal cables are routed correctly and connected, and no tools or extra parts are left inside the system.
5.
Open the drive bays
, remove
all drives
, and then
close the drive bays.
6.
Remove the
power supply units
.
7.
Remove the system from the rack and place it on an ESD work bench. For more information, see the
Rail Installation Guide
available at
www.dell.com/poweredgemanuals
.
8.
Remove the system cover
.
9.
Remove the following:
a.
Air shroud
b.
Drive cage (rear)
(if installed)
c.
All expansion cards and risers
d.
Internal PERC riser
e.
IDSDM/vFlash module
f.
Optional internal USB key
(if installed)
g.
Processors and heat sink modules
h.
Processors blanks (if installed)
i.
Memory modules and memory module blanks
j.
LOM riser card
142
Installing and removing system components