Dell PowerEdge R740xd2 EMC Installation and Service Manual - Page 147

Cable chain assembly, Removing cable chain assembly

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Cable chain assembly Removing 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. Open the drive bays, remove all drives, and then close the drive bays. 5. Remove the power supply units. 6. 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. 7. Remove the system cover. 8. If installed, remove the front bezel. 9. 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. h. PIB. 10. Disconnect all cables connected to the cable chain assembly from the backplanes and the system board. Steps 1. Using a Phillips #1 screwdriver, remove all the screws securing the support bar and lift it away from the system. 2. Remove the screws connecting the cable chain and the bay 2 backplane bracket. 3. Remove the screws securing the cable chain top cover, and disengage it from the guiding pins and lift it away from the system. Installing and removing system components 147

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Cable chain assembly
Removing 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.
Open the drive bays
, remove
all drives
, and then
close the drive bays.
5.
Remove the
power supply units
.
6.
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
.
7.
Remove the system cover
.
8.
If installed,
remove the front bezel
.
9.
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.
h.
PIB.
10.
Disconnect all cables connected to the cable chain assembly from the backplanes and the system board.
Steps
1.
Using a Phillips #1 screwdriver, remove all the screws securing the support bar and lift it away from the system.
2.
Remove the screws connecting the cable chain and the bay 2 backplane bracket.
3.
Remove the screws securing the cable chain top cover, and disengage it from the guiding pins and lift it away from the system.
Installing and removing system components
147