Dell PowerEdge R740xd2 EMC Installation and Service Manual - Page 150

Installing the cable chain assembly

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8. Remove the screws connecting the cable chain rail to the chassis. 9. Extend the drive bays all the way out of the bay area, until there is a gap to remove the cable chain rail. 10. Lift the cable chain assembly out of the system. Figure 131. Removing the cable chain assembly from the system Next steps Replace the cable chain assembly. Installing the cable chain assembly 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. If installed, remove front bezel. 8. 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. 9. Remove the system cover. 10. Remove the following: a. Drive bay 1 backplane bracket. b. Drive bay 2 backplane bracket. c. Air shroud. d. Intrusion switch. e. If installed, rear drive cage. f. Internal PERC riser. g. Memory modules for processor 1. 150 Installing and removing system components

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8.
Remove the screws connecting the cable chain rail to the chassis.
9.
Extend the drive bays all the way out of the bay area, until there is a gap to remove the cable chain rail.
10.
Lift the cable chain assembly out of the system.
Figure 131. Removing the cable chain assembly from the system
Next steps
Replace the cable chain assembly
.
Installing the cable chain assembly
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.
If installed,
remove front bezel
.
8.
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
.
9.
Remove the system cover
.
10.
Remove the following:
a.
Drive bay 1 backplane bracket.
b.
Drive bay 2 backplane bracket.
c.
Air shroud.
d.
Intrusion switch.
e.
If installed,
rear drive cage
.
f.
Internal PERC riser.
g.
Memory modules for processor 1.
150
Installing and removing system components