Dell PowerEdge 1950 – страница 3

The password assignment is not case-sensitive. However, certain key combinations are not valid. If you

enter one of these combinations, the system beeps. To erase a character when entering your password, press

<Backspace> or the left-arrow key.

After you verify the password, the Setup Password setting changes to Enabled. The next time you enter the

System Setup program, the system prompts you for the setup password.

A change to the Setup Password option becomes effective immediately (restarting the system is not

required).

Operating With a Setup Password Enabled

If Setup Password is set to Enabled, you must enter the correct setup password before you can modify

most of the System Setup options. When you start the System Setup program, the program prompts you to

enter a password.

If you do not enter the correct password in three attempts, the system lets you view, but not modify, the

System Setup screens—with the following exception: If System Password is not set to Enabled and is not

locked through the Password Status option, you can assign a system password (however, you cannot

disable or change an existing system password).

NOTE: You can use the Password Status option in conjunction with the Setup Password option to protect the

system password from unauthorized changes.

Deleting or Changing an Existing Setup Password

1

Enter the System Setup program and select the

System Security

option.

2

Highlight the

Setup Password

option, press <Enter> to access the setup password window, and press

<Enter> twice to clear the existing setup password.

The setting changes to

Not Enabled

.

3

If you want to assign a new setup password, perform the steps in "Assigning a Setup Password" on

page 40.

Disabling a Forgotten Password

See "Disabling a Forgotten Password" on page 117.

Baseboard Management Controller Configuration

The Baseboard Management Controller (BMC) enables configuring, monitoring, and recovery of systems

remotely. BMC provides the following features:

• Uses the system’s integrated NIC

• Fault logging and SNMP alerting

• Access to system event log and sensor status

• Control of system functions including power on and off

Using the System Setup Program 41

Cooling Fan Modules

This system contains four cooling fan modules, each comprised of two dual-rotor fans, for a total of eight fans

that are connected directly to the system board.

Removing a Cooling Fan Module

CAUTION: Many repairs may only be done by a certified service technician. You should only perform

troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or

telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your

warranty. Read and follow the safety instructions that came with the product.

NOTE: The procedure for removing each individual fan module is the same.

1

Turn off the system and attached peripherals, and disconnect the system from the electrical outlet and

peripherals.

2

Open the system. See "Opening and Closing the System" on page 46.

NOTE: You can remove the fan modules without removing the memory cooling shroud; however, Dell

recommends that you remove this shroud before removing a fan module. Do not remove the system board cooling

shroud.

See "Removing the Memory Cooling Shroud" on page 52.

3

Raise the fan handle, disconnect the module wire harness from the system board, and pull the fan straight

up to clear the chassis. See Figure 3-4.

4

Unplug the fan module connector.

48 Installing System Components

Figure 3-4. Removing and Installing a Cooling Fan

2

3

1

4

5

1 cooling fan modules (4) 2 fan module handles 3 module wire harness

4 cooling fan module connector 5 system board cooling shroud

Replacing a Cooling Fan Module

NOTE: The procedure for installing each individual fan is the same.

1

Ensure that the fan handle is upright and lower the fan into its retention base until the fan is fully seated.

Then lower the fan handle until it snaps into place. See Figure 3-4.

2

Attach the fan module connectors.

3

If you removed the memory cooling shroud to access the fan modules, replace the shroud. See "Replacing

the Memory Cooling Shroud" on page 53.

4

Close the system. See "Opening and Closing the System" on page 46.

Installing System Components 49

Removing the Plastic Fan Guide

NOTE: The plastic fan guide is mounted to the chassis between the fans.

NOTE: You may need to remove the system from the rack.

1

Remove the cooling fan modules. See "Removing a Cooling Fan Module" on page 48.

2

Remove the system from the rack. See the Rack Installation Guide for your system.

3

Place the system upside-down on a flat surface.

4

Using a #2 Phillips screwdriver, remove the two screws from the bottom of the chassis that secure the fan

bracket.

5

Turn the system right-side up, place it on a flat surface, and then remove the fan bracket.

Replacing the Plastic Fan Guide

1

While the system is out of the rack, and with the top cover removed, place the system on its side on a flat

surface.

2

Place the fan bracket into its location inside the chassis.

3

Holding the fan bracket in place, use a #2 Phillips screwdriver to replace the two screws on the bottom of

the chassis.

4

Place the system right-side up on a flat surface.

5

Replace the cooling fan modules. See "Replacing a Cooling Fan Module" on page 49.

6

Replace the system in the rack. See the Rack Installation Guide for your system.

Cooling Shrouds

Your system contains two cooling shrouds.

• System board cooling shroud

• Memory cooling shroud

System Board Cooling Shroud

The

system board cooling shroud directs airflow over the system memory modules, channeling the air from the

four fan modules. See Figure 3-5.

50 Installing System Components

Figure 3-5. System Board Cooling Shroud

1

1 system board cooling shroud

Removing the System Board Cooling Shroud

1

If applicable, remove the bezel. See "Removing and Replacing the Front Bezel" on page 45.

2

Turn off the system and attached peripherals, and then disconnect the system from the electrical outlet.

3

Open the system. See "Opening the System" on page 46.

4

Remove the memory cooling shroud. See "Removing the Memory Cooling Shroud" on page 52.

5

Remove both the center and left risers from the system board. See "Removing an Expansion-Card Riser"

on page 82.

6

Press the tabs on the front side of the shroud (nearest to the processors), and then lift the shroud up and

away from the system.

Installing the System Board Cooling Shroud

1

Align the back of the shroud to the front of the posts of the center and rear card risers on the motherboard.

2

Press down gently on the front of the shroud until it engages with the plastic tabs on the motherboard.

3

Place the center and left risers. See "Installing an Expansion-Card Riser" on page 83.

4

Replace the memory cooling shroud. See "Replacing the Memory Cooling Shroud" on page 53.

5

Close the system. See "Closing the System" on page 47.

Installing System Components 51

6

If applicable, replace the bezel. See "Removing and Replacing the Front Bezel" on page 45.

7

Attach any peripherals, connect the system to the electrical source, and then turn on the system.

Memory Cooling Shroud

The memory cooling shroud covers both the memory modules (DIMMs) and the processors. This shroud can be

removed and installed. See Figure 3-6 and "System Board Removal" on page 91.

Removing the Memory Cooling Shroud

CAUTION: Many repairs may only be done by a certified service technician. You should only perform

troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or

telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your

warranty. Read and follow the safety instructions that came with the product.

CAUTION: The memory modules are hot to the touch for some time after the system has been powered down.

Allow time for the memory modules to cool before handling them. Handle the memory modules by the card edges

and avoid touching the components on the memory module.

NOTICE: Never operate your system with the memory cooling shroud removed. Overheating of the system can

develop quickly resulting in a shutdown of the system and the loss of data.

1

To remove the cooling shroud, locate the release tab on the shroud edge that is nearest to the adjacent

system board shroud. See Figure 3-6.

2

Pull up on the release tab to release the memory cooling shroud.

3

Unseat the shroud from the securing tabs located on the periphery of the shroud.

4

Carefully lift the shroud straight up to disengage it from the system board, and then lift the shroud away

from the system.

52 Installing System Components

Figure 3-6. Memory Cooling Shroud

1

2

3

4

1 memory cooling shroud 2 memory shroud release tab 3 memory modules (8)

4 system processors (2)

Replacing the Memory Cooling Shroud

1

To install the memory cooling shroud, align the shroud directly over the memory modules and the

processors.

2

Using the interior system board cooling shroud as a guide, slowly lower the shroud straight down onto the

system, directly over the processors and memory modules.

3

Gently press around the periphery of the shroud until it engages with the external tabs and snaps into

place.

Power Supplies

Your system supports one or two power supplies rated at an output of 670 W. If only one power supply is

installed, it must be installed in the left power supply bay (bay 1). If two power supplies are installed, the

second power supply serves as a redundant, hot-plug power source.

NOTICE: In a non-redundant configuration, the power supply blank must be installed in the unoccupied power

supply bay to ensure proper system cooling. See "Installing the Power Supply Blank" on page 56.

Installing System Components 53

Removing a Power Supply

NOTICE: The system requires one power supply for the system to operate normally. The system is in the

redundant mode when two power supplies are installed and both power supplies are connected to an AC power

source. Remove and replace only one power supply at a time in a system that is powered on. Operating the system

with only one power supply installed and without a power supply blank installed for extended periods of time can

cause the system to overheat.

NOTICE: If only one power supply is installed, it must be installed in the left power supply bay (1).

NOTICE: If you connect the system to a power source in the range of 120 to 220 VAC, and if two power supplies

are installed, the second power supply serves as a redundant, hot-plug power source.

NOTE: On your rack system, you may have to unlatch and lift the cable management arm if it interferes with

power supply removal. For information about the cable management arm, see the system’s Rack Installation

Guide.

1

If your system has a single power supply, turn off the system and all attached peripherals. For a redundant

system, you can leave the system running and proceed to the next step.

2

Disconnect the power cable from the power source.

3

Disconnect the power cable from the power supply and remove the cable from the cable retention bracket.

NOTICE: On a rack system, you may need to temporarily unlatch and lift the cable management arm. For

information about the cable management arm, see the system’s Rack Installation Guide.

4

Release the locking tab on the left side of the power supply by pressing in toward the right until the power

supply is released from the chassis. See Figure 3-7.

5

Holding the power-supply handle, pull the power supply straight out to clear the chassis.

54 Installing System Components

Figure 3-7. Removing and Installing a Power Supply

3

1

2

4

5

6

7

1 power-supply 2 power-supply handle 3 cable retention bracket

4 power supply blank 5 power-supply bay 2 (optional) 6 redundant power supply bay 1

7 locking tab

Replacing a Power Supply

1

If you are adding a second power supply, remove the power supply blank. See "Removing a Power

Supply" on page 54.

2

Holding the power-supply handle, slide the new power supply into the chassis until it is fully seated and

contacts the system chassis. See Figure 3-7.

NOTICE: On a rack system, you may need to temporarily unlatch and lift the cable management arm. For

information about the cable management arm, see the system’s Rack Installation Guide.

3

Insert the power cable through the cable retention bracket, connect the power cable to the power supply,

and plug the cable into a power outlet.

NOTICE: For more information about the power cable retention bracket, see the Getting Started With Your

System guide.

NOTE: After installing a new power supply in a system with two power supplies, allow several seconds for the

system to recognize the power supply and determine its status. The power-supply status indicator turns green to

signify that the power supply is functioning properly (see Figure 1-4).

Installing System Components 55

Removing the Power Supply Blank

Press the latch on the left side to release and remove the blank, rotating the blank slightly to clear the bay,

and remove from the chassis.

NOTICE: To ensure proper system cooling, the power supply blank must be installed on the unoccupied power

supply bay in a non-redundant configuration. Remove the power supply blank only if you are installing a second

power supply.

Installing the Power Supply Blank

To install the power supply blank, insert the tab on the right edge of the blank into the slot in the power

supply bay wall. Rotate the blank into the power supply bay until it is fully seated.

SAS Controller Daughter Card

Your system includes a dedicated slot on the sideplane for an optional SAS controller daughter card. The

SAS controller daughter card provides the SAS storage subsystem for your system’s two optional internal

hard drives. The optional SAS RAID controller daughter card allows you to set up any internal hard drives

in a RAID configuration.

Removing a SAS Controller Daughter Card

1

If you are removing a SAS RAID controller daughter card, disconnect the battery cable from the card by

releasing the tab on the cable connector on the daughter card. See Figure 3-26.

2

Pull on the release latch on the daughter card (see Figure 3-8) and slide the daughter card tray towards the

hard drives.

3

Continue to hold the guide rails outward as you pull the SAS controller daughter card upward from the

rails.

Installing a SAS Controller Daughter Card or SAS RAID Controller Daughter Card

NOTICE: If you are installing a SAS RAID daughter card, be careful not to press on the memory module on the

card (see Figure ). to avoid damaging the memory module or its socket.

NOTICE: If you are installing a new or replacement SAS RAID daughter card, do not remove the card’s plastic

cover until you have completed installing the card.

1

Hold the metal daughter card tray by its edges with the release latch and edge connector facing the

sideplane board. See Figure 3-8.

2

Align the two slots in the daughter card tray and the corresponding tabs on the chassis, then lower the card

tray onto the chassis.

3

Slide the daughter card tray towards the sideplane until the edge connector on the daughter card fits into

the socket on the sideplane board and the release latch engages. See Figure 3-8.

56 Installing System Components

Figure 3-8. Installing a SAS Controller Daughter Card

4

3

2

5

1

6

7

8

1 SAS controller daughter card

2 sideplane 3 daughter card socket

and tray assembly

4 release latch 5 RAID battery connector (SAS

6 RAID memory module

RAID controller daughter card

(DIMM) (SAS RAID

only)

controller daughter card only)

7 SAS RAID connector 0 (to

8 alignment slots in card tray (2)

backplane SAS A)

4

Attach any cables from the internal storage daughter card to the backplane, referring to Figure 3-9 and

Figure 3-10 for the cabling guidelines for your system’s card and backplane configuration.

NOTICE: You must follow the cabling diagrams for connecting the hard drives to either of the internal storage

daughter cards that are illustrated in the following figures to ensure proper connection. Figure 3-9 illustrates the

cable routing for the SAS controller daughter card and Figure 3-10 illustrates the cable routing for the SAS RAID

controller daughter card.

Installing System Components 57