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support.dell.com Checking Inside the Computer 7-1 This section provides troubleshooting procedures for components inside the com- puter. Before you start any of the procedures in this section, take the following steps: Perform the procedures described in "Checking Connections and Switches" and "The System Setup Program" in Chapter 2. Read the safety instructions in "Safety First—For You and Your Computer" found next in this chapter. You may need the following items to perform the procedures in this section: The Dell OpenManage Server Assistant CD A blank, formatted 3.5-inch diskette Your system User's Guide The key to the system keylock NOTE: When you see the question "Is the problem resolved?" in a troubleshooting procedure, perform the operation that caused the problem. The procedures in this guide require that you open the computer panel doors and work inside the computer. While working inside the computer, do not attempt to ser- vice the computer except as explained in this guide and elsewhere in Dell documentation. Always follow the instructions closely. Working inside the computer is safe—if you observe the following precautions. Before starting to work on the computer, perform the following steps in the sequence listed: 1. Turn off your computer and any peripherals (unless you are installing or removing a hard-disk drive).

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Page 1: Checking Inside the Computer - Cheriton School of Computer ...brecht/servers/docs/PowerEdge-2600/en/Pe6450/... · support.dell.com Checking Inside the Computer 7-5 ˆ ˆ In Figure

support.dell.com Checking Inside the Computer 7-1

� � � � � � � �

������������� ������� ��

��������This section provides troubleshooting procedures for components inside the com-puter. Before you start any of the procedures in this section, take the following steps:

� Perform the procedures described in "Checking Connections and Switches" and "The System Setup Program" in Chapter 2.

� Read the safety instructions in "Safety First—For You and Your Computer" found next in this chapter.

You may need the following items to perform the procedures in this section:

� The Dell OpenManage Server Assistant CD

� A blank, formatted 3.5-inch diskette

� Your system User's Guide

� The key to the system keylock

NOTE: When you see the question "Is the problem resolved?" in a troubleshooting procedure, perform the operation that caused the problem.

����� ���� �����������������������The procedures in this guide require that you open the computer panel doors and work inside the computer. While working inside the computer, do not attempt to ser-vice the computer except as explained in this guide and elsewhere in Dell documentation. Always follow the instructions closely.

Working inside the computer is safe—if you observe the following precautions.

��������������� ��������� ��������� ��������� � ����� ��

Before starting to work on the computer, perform the following steps in the sequence listed:

1. Turn off your computer and any peripherals (unless you are installing or

removing a hard-disk drive).

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7-2 Dell PowerEdge 6450 Systems Installation and Troubleshooting Guide

2. Ground yourself by touching an unpainted metal surface on the chassis,

such as the metal around the card-slot openings at the back of the com-

puter, before touching anything inside your computer.

3. While you work, periodically touch an unpainted metal surface on the com-

puter chassis to dissipate any static electricity that might harm internal

components.

4. Disconnect your computer and peripherals from their power sources (unless

you are installing or removing a hard-disk drive). Also, disconnect any tele-

phone or telecommunication lines from the computer.

Doing so reduces the potential for personal injury or shock.

In addition, Dell recommends that you periodically review the safety instructions for this system.

�����������������When following the procedures in this guide, assume that the locations or directions relative to the computer are as shown in Figure 7-1.

������������ ���������������� �

back of computer

right sideleft side

front of computer

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support.dell.com Checking Inside the Computer 7-3

������������ ����������Use the following procedure to remove the front bezel of the computer.

���������������������� !����"�#�$��%&�'�'�(��&�����'�)�*�)!�)'�� �����'+'���,'�����!��!���)��(�-$*�&�'��)�'��(.��)#)!*�� �+�-�*������ �$$�/�����&!�&�!�') ��+��-�*�$���'0��� �!��������') ��+���'�!-(����'�)������"���������� ����'�(�)&��!� �!����'����&�!�)����-�*�$���'�/����/�!.������'�*��+�-!�(��&-��!0

1. If the front bezel door is locked, access the bezel lock by pushing in on the prod-uct identification badge on the front bezel (see Figure 7-2).

The lock access panel unlatches.

2. Open the lock access panel and unlock the bezel.

3. Use your fingertips to gently pry loose the four sides of the bezel and pull the bezel straight out from the chassis (see Figure 7-2.

��������������� ����������� ��������

front bezel

product identification badge bezel lock

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7-4 Dell PowerEdge 6450 Systems Installation and Troubleshooting Guide

������������� ��������������������The computer has two panel doors on the top of the system that provide access to the system board, memory board, microprocessors, and expansion cards. The right panel door provides access to the expansion slots; the left panel door opens to the microprocessor and memory board (see Figure 7-3). The doors interlock so that the keylock on the right-side panel door secures both doors and the fan assembly.

Use the following procedure to open the computer panel doors:�1. Observe the precautions in “Safety First—For You and Your Computer” found

earlier in this chapter. Also observe the safety instructions at the front of this guide.

2. Turn the keylock on the top of the chassis to the unlocked position (designated by the open lock icon).

If necessary, unlock the keylock using the system key (see Figure 7-3).

3. Press the two slide latches to release the right top door and lift the door.

4. Lift the left door.

When closing the panel doors, be sure to close the left door first and then the right door so that the right door overlays the left door. The doors must be in this position for the keylock to secure both doors properly.

�������������������������������� �� �����!"�����

left panel door

panel door keylock

door latches (2)

right panel door

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support.dell.com Checking Inside the Computer 7-5

����������������In Figure 7-4, the panel doors on the top of the computer are open to provide an inter-nal view of the system. Figure 7-4 also shows an exploded view of the fan assembly and the cover panel that provides access to the small computer system interface (SCSI) backplane board. Refer to this illustration to locate interior features and compo-nents discussed later in this guide.

The system board—the large printed circuit board at the bottom of the chassis—holds the computer’s control circuitry and other electronic components. Additional hard-ware components, such as expansion cards and the memory module, are installed directly on the system board.

During an installation or troubleshooting procedure, you may be required to change a jumper or switch setting. For information on the system board jumpers, see Appendix A, “Jumpers, Switches, and Connectors.”

The wide ribbon cables inside the chassis (not shown in Figure 7-4) are the interface cables for the drives. For non-SCSI drives such as the diskette drive, an interface cable connects the drive to an interface connector on the system board, interposer board, or on an expansion card. For SCSI hard-disk drives, an interface cable connects the SCSI backplane board to SCSI host adapters either on the system board or on an expansion card. (For more information, see Chapter 9, “Installing A Diskette Drive, CD-ROM Drive, or External Tape Drive,” and Chapter 10, “Installing Hard-Disk Drives.”)

NOTE: If you should ever disconnect any or all of the interface cables from the system board, be sure to note the order in which you remove them so that you can reinstall them in the correct order.

Toward the front of the chassis interior, beneath the power supplies, is the power-supply paralleling board. Attached to the power-supply paralleling board are DC power cables, which supply power to the system board, SCSI backplane board, the diskette drive, and the CD-ROM drive.

Beneath the cover panel toward the front of the chassis are the SCSI backplane board and the drive bays. The diskette drive bay is a vertical bay to the left of the hard-disk drives that holds a 3.5-inch diskette drive installed on a slide bracket and connected to an interposer card located behind the drive. The interposer card provides a stable con-nection for the diskette interface cable and power cable. The hard-disk drive bays provide space for up to four 1-inch SCSI hard-disk drives. These hard-disk drives are connected to a SCSI host adapter on the system board or on an expansion card via the SCSI backplane board.

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7-6 Dell PowerEdge 6450 Systems Installation and Troubleshooting Guide

��������#�������$������!"����

!���"������������#���������Liquid spills, splashes, and excessive humidity can cause damage to the system. If an external device (such as a printer or an external drive) gets wet, contact the device manufacturer for instructions. If the computer gets wet, perform the following steps.

���� ������1�!���(�������)��'�� $�(�!�'�)��(���'(�)!��1��������') ��+���'�!-(����'�)������ !����� ����'��-�*�0

1. Turn off the system, including any attached peripherals, and disconnect the sys-tem from the electrical outlet.

2. Open the panel doors on top of the computer.

See “Accessing the Interior of Your System” found earlier in this chapter.

SCSI backplane board

system board

PCI expansion slots

microprocessors

fan assembly

power supplies (3)

memory board

PCI insulator

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support.dell.com Checking Inside the Computer 7-7

3. Remove all expansion cards installed in the computer.

See “Removing an Expansion Card” in Chapter 8.

4. Let the computer dry for at least 24 hours.

Make sure that it is thoroughly dry before proceeding.

5. Close the computer panel doors, reconnect the system to the electrical outlet, and turn on the system.

Does the system have power?

Yes. Go to step 6.

No. See Chapter 11, "Getting Help," for instructions on obtaining technical assistance.

6. Turn off the system, disconnect it from the electrical outlet, open the computer panel doors, and reinstall all expansion cards you removed in step 3.

See “Installing an Expansion Card” in Chapter 8.

7. Close the computer panel doors and reconnect the system to the electrical outlet.

8. Run the Dell Diagnostics and test the system.

See Chapter 5, “Running the Dell Diagnostics.”

Did the tests run successfully?

Yes. The system is operating properly.

No. See Chapter 11, "Getting Help," for instructions on obtaining technical assistance.

!���"������������$��������������If the computer was dropped or damaged while being moved, you should check the computer to see if it functions properly. If an external device attached to the computer is dropped or damaged, contact the manufacturer of the device for instructions or see Chapter 11, "Getting Help," for information on obtaining technical assistance from Dell.

To troubleshoot a damaged computer, perform the following steps:

1. Turn off the system, including any attached peripherals, and disconnect the sys-tem from its electrical outlet.

���� ������1�!���(�������)��'�� $�(�!�'�)��(���'(�)!��1��������') ��+���'�!-(����'�)������ !����� ����'��-�*�0�

2. Open the panel doors on top of the computer.

See “Accessing the Interior of Your System” found earlier in this chapter.

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7-8 Dell PowerEdge 6450 Systems Installation and Troubleshooting Guide

3. Verify all internal cable and component connections.

Make sure that all cables are properly connected and that all components are properly seated in their connectors and sockets.

4. Close the computer panel doors, reconnect the system to the electrical outlet, and turn on the system.

5. Run the system board tests in the Dell Diagnostics.

Did the tests run successfully?

Yes. The system is operating properly.

No. See Chapter 11, "Getting Help," for instructions on obtaining technical assistance.

!���"������������������������If an error message indicates a problem with the system battery, or if the System Setup program loses the system configuration information when the computer is turned off, the battery may be defective.

To troubleshoot the system battery, perform the following steps.

�����������!���'�)�*)���!�� �)���/�")���!+��%&$�*����� �����'���(�!!�(�$+���'�)$$�*0���&$)(������")���!+���$+�/��������')����!��2-��)$�����+&��!�(��3���*�*�"+������)�- )(�-!�!0���'()!*�-'�*�")���!��'�)((�!*������������)�- )(�-!�!4'���'�!-(����'0

1. Turn off the system, including any attached peripherals, and disconnect the sys-tem from its electrical outlet.

���� ������1�!���(�������)��'�� $�(�!�'�)��(���'(�)!��1��������') ��+���'�!-(����'�)������ !����� ����'��-�*�0

2. Open the panel doors on top of the computer.

See “Accessing the Interior of Your System” found earlier in this chapter.

3. Remove all expansion cards.

4. Remove the Peripheral Component Interconnect (PCI) insulator (see Figure 7-4).

To remove the PCI insulator, release the two latches on the PCI insulator along the interior wall of the system chassis, and then lift the PCI insulator out of the system.

5. Check the connection of the coin cell battery to the system board.

See Figure 8-1 for the location of the battery socket.

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support.dell.com Checking Inside the Computer 7-9

Is the battery firmly installed in the battery socket on the system board?

Yes. Go to step 7.

No. Go to step 6.

6. Reseat the battery in its socket.

7. Replace the PCI insulator.

8. Replace the expansion cards.

9. Close the computer panel doors and reconnect the system to the electrical outlet.

Is the problem resolved?

Yes. The battery was loose. You have fixed the problem.

No. Continue with this procedure.

10. Repeat steps 1 through 4.

11. Replace the system battery.

12. Repeat steps 7 through 8

13. Close the computer panel doors and reconnect the system to the electrical outlet.

Is the problem resolved?

Yes. The battery's charge was low. You have fixed the problem.

No. See Chapter 11, "Getting Help," for instructions on obtaining technical assistance.

!���"����������%������������%��"����The redundant power supplies in your system are controlled by the power-supply par-alleling board. The two indicators on the top of the power supply (see Figure 7-5) signal the status of each power supply. Both indicators light briefly during initial sys-tem start-up to show that the indicators are functioning. The green status indicator stays on to show that the power supply is operating normally. The red fault indicator turns off after initial system start-up is complete. If the indicator lights any time after system start-up, a fault is indicated in the power supply, and the power supply should be replaced.

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7-10 Dell PowerEdge 6450 Systems Installation and Troubleshooting Guide

��������%�����$��$����& '���!�������

����������� ����������

Follow these steps to replace a power supply:

1. Remove the power supply (see Figure 7-6):

a. Disengage the power supply handle from the latched position by pressing down on the handle and releasing it.

b. Rotate the handle outward and then pull up on the handle to slide the power supply out of the chassis.

power supplies (3)

green status indicator (lights when power supply is functioning normally)

red fault indicator (lights when a fault is indicated)

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support.dell.com Checking Inside the Computer 7-11

��������(������ �������& '���!����"

���� ���������-'���%(�''���� �!(��/����'$�*��������&�/�!�'-&&$+����������(�)''�'0��)�)���(�-$*�!�'-$���������&�/�!�'-&&$+�(����(��!'��!��������&�/�!3'-&&$+�&)!)$$�$����"�)!*0

2. Align the front and rear tabs on the power supply with the slots in the chassis and slide the new power supply into the chassis.

3. Rotate the power supply handle to the closed position and push down on the handle to ensure that it snaps into place.

The handle activates a power switch that turns on the power supply when the handle is properly closed.

�� ������ ���� ����������� ���� �

1. Check the AC power outlet and power cable (see “Checking Connections and Switches” in Chapter 2).

2. Turn off the system, including any attached peripherals, and disconnect all the AC power cables from their power sources.

���� ������5�!���(�������)��'�� $�(�!�'�)��(���'(�)!��6��������') ��+���'�!-(����'�)������ !����� ����'��-�*�0

power supply handle

power supply

chassis slots (one each side)

power supply switch

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7-12 Dell PowerEdge 6450 Systems Installation and Troubleshooting Guide

3. Open the panel doors on top of the computer.

See “Accessing the Interior of Your System” found earlier in this chapter.

4. Check the power cable connections to connectors POWER1, POWER2, and POWER3 on the system board.

See Figure 8-1 for the location of these connectors.

5. Check the cable connections on the power-supply paralleling board (see Table 7-1).

!���"������������� ��������"�����A fan assembly is mounted in the middle of the Dell PowerEdge 6450 chassis, just behind the power supplies and the drive bays. The assembly contains four cooling fans.

���� ���-�()�����3&$-������ )��)''��"$+������� �+�-�����*�)��$+���'�)$$�)�!�&$)(������)''��"$+0�������������� )��)''��"$+� !���)�!-������'+'3���� �!�)�+�&�!��*�� ������"�+��*�/�)���'����*�*� �!�����*�)���!�&$)(������()��!�'-$�����'+'�������!��)����0���������).��$����!���)���/�����-��'����!������)�*�!�&$)(������ )��)''��"$+0

The fan assembly is hot-pluggable, which means that you can remove the fan assem-bly and replace it with another fan assembly while the system is running.

If the Dell OpenManage HIP server-management application program issues a fan-related error message, use the following procedure to troubleshoot and repair the problem.

NOTE: You can perform the following procedure with the system turned on or off.

)�*�������& '���!����"�� ����� ��� ������& '���!����"�&������������ ��$

��������� ��������������

PWR1 To POWER1 connector on system board

PWR2 To POWER2 connector on system board

PWR3 To POWER3 connector on system board

FD To diskette drive and CD-ROM drive

HD_B/P To POWER connector on SCSI backplane board

NOTE: For the full name of an abbreviation or acronym used in this table, see the abbreviation and acronym list.

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support.dell.com Checking Inside the Computer 7-13

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1. Open the panel doors on top of the computer.

See “Accessing the Interior of Your System” found earlier in this chapter.

2. Grasp the recessed grip slot at the top of the fan assembly, press in on the release lever inside the slot, and lift up to remove the fan assembly from the sys-tem (see Figure 7-7).

��������������� ������������������*�"

3. Reinstall the assembly, making sure that the electrical connector is fully seated.

Do the fans operate properly?

Yes. You have fixed the problem.

No. Go to step 4.

fan assembly grip slot (release lever inside the slot)

fan assembly

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7-14 Dell PowerEdge 6450 Systems Installation and Troubleshooting Guide

4. Remove the fan assembly.

5. Slide a new replacement assembly into the system, making sure that the electri-cal connector is fully seated.

The cooling fans should begin operating.

!���"����������&'�������������If an error message indicates an expansion-card problem or if an expansion card seems to perform incorrectly or not at all, the problem could be a faulty connection, a conflict with software or other hardware, or a faulty expansion card. To troubleshoot expansion cards, perform the following steps:

1. Start the Resource Configuration Utility, and verify that all expansion cards are configured correctly. Save the configuration before exiting the utility.

See "Using the Resource Configuration Utility" in the User's Guide for instructions.

2. Turn off the system, including any attached peripherals, and disconnect the AC power cable from its power source.

���� ������1�!���(�������)��'�� $�(�!�'�)��(���'(�)!��1��������') ��+���'�!-(����'�)������ !����� ����'��-�*�0

3. Open the panel doors on top of the computer.

See “Accessing the Interior of Your System” found earlier in this chapter.

4. Verify that each expansion card is firmly seated in its connector.

Are the expansion cards properly seated in their connectors?

Yes. Go to step 7.

No. Go to step 5.

5. Reseat the expansion cards in their connectors.

6. Close the computer panel doors, reconnect the system to the AC power source, and turn on the system.

Is the problem resolved?

Yes. The cards were loose. You have fixed the problem.

No. Go to step 7.

7. Shut down and unplug the system and open the panel doors, then verify that all appropriate cables are firmly connected to their corresponding connectors on the expansion cards.

For instructions on which cables should be attached to specific connectors on an expansion card, see the expansion card's documentation.

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support.dell.com Checking Inside the Computer 7-15

Are the appropriate cables firmly attached to their connectors?

Yes. Go to step 9.

No. Go to step 8.

8. Reconnect the cable connectors to the appropriate connectors on the expansion cards.

9. Close the computer panel doors, reconnect the system to the AC power source, and turn on the system.

Is the problem resolved?

Yes. The cable connections were loose. You have fixed the problem.

No. Go to step 10.

10. Shut down and unplug the system. Open the panel doors and remove all expan-sion cards.

See “Removing an Expansion Card” in Chapter 8.

11. Close the computer panel doors, reconnect the system to the AC power source, and turn on the system.

12. Run the system memory test in the Dell Diagnostics.

Did the test run successfully?

Yes. Go to step 13.

No. See Chapter 11, “Getting Help,” for information on obtaining technical assistance.

13. Turn off the system, disconnect it from the AC power source, and open the panel doors on top of the computer.

14. Reinstall one of the expansion cards you removed in step 10.

15. Close the computer panel doors, reconnect the system to the AC power source, and turn on the system.

16. Run the system memory test in the Dell Diagnostics.

Did the test run successfully?

Yes. Go to step 17.

No. See Chapter 11, “Getting Help,” for information on obtaining technical assistance.

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7-16 Dell PowerEdge 6450 Systems Installation and Troubleshooting Guide

17. Repeat steps 14 through 16 for each of the remaining expansion cards that you removed in step 8.

Have you reinstalled all of the expansion cards without encountering a test failure?

Yes. You have fixed the problem.

No. See Chapter 11, “Getting Help,” for information on obtaining technical assistance.

!���"����������������(�����A system memory problem can be a faulty or incorrect type of dual in-line memory module (DIMM) or a faulty system board. All system DIMMs should be registered PC133 DIMMs. If a random-access memory (RAM) error message appears, the sys-tem probably has a memory problem.

When you turn on or reboot the system, the Caps Lock and Scroll Lock indicators on the keyboard should flash momentarily and then turn off. If the Num Lock option in the System Setup program is set to On, the Num Lock indicator should flash momen-tarily and then remain on; otherwise, it should turn off. Abnormal operation of these indicators can result from a defective DIMM in BANK 1.

To troubleshoot system memory, perform the following steps:

1. Turn on the system, including any attached peripherals.

Is there an error message indicating invalid system configuration information after the memory count is completed?

Yes. Go to step 2.

No. Go to step 11.

2. Enter the System Setup program to check the System Memory setting.

See "Using the System Setup Program" in the User's Guide for instructions.

Does the amount of memory installed match the System Memory setting?

Yes. Go to step 11.

No. Go to step 3.

3. Turn off the system, including any attached peripherals, and disconnect the AC power cable from its power source.

NOTICE: See "�!���(�������)��'�� $�(�!�'�)��(���'(�)!��" in the safety

instructions at the front of this guide.

4. Open the panel doors on top of the computer.

See “Accessing the Interior of Your System” found earlier in this chapter.

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support.dell.com Checking Inside the Computer 7-17

5. Remove the memory board.

To remove the memory board, hold the board by the corners and carefully pull the board out until the edge connectors are free from the system board connector.

6. Reseat the DIMMs in their sockets.

See “Adding Memory” in Chapter 8 for instructions on removing and replacing DIMMs.

7. Replace the memory board.

To replace the memory board, hold the board by the corners with the DIMM sockets facing toward the microprocessors. Ease the board into the slot guides until it is touching the system board connectors. Press the board carefully but firmly into the system board connectors.

8. Close the panel doors and reconnect the system to an electrical outlet.

9. Enter the System Setup program and check the System Memory setting again.

Does the amount of memory installed match the System Memory setting?

Yes. Go to step 10.

No. Go to step 11.

10. Reboot the system, and observe the monitor screen and the Num Lock, Caps Lock, and Scroll Lock indicators on the keyboard.

Does the monitor screen remain blank, and do the Num Lock, Caps Lock, and Scroll Lock indicators on the keyboard remain on?

Yes. Go to step 11.

No. Go to step 15.

11. Shut down and unplug the system, open the panel doors, and remove the mem-ory board.

12. Swap the DIMMs in BANK 1 with others of the same capacity.

13. Replace the memory board, close the computer panel doors, and reconnect the system to an electrical outlet.

14. Reboot the system, and observe the monitor screen and the indicators on the keyboard.

Is the problem resolved?

Yes. You have fixed the problem.

No. Go to step 15.

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15. Run the system memory test in the Dell Diagnostics.

Did the test run successfully?

Yes. You have fixed the problem.

No. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.

!���"�������������)�������"�����Troubleshooting video problems involves determining which of the following items is the source of the problem: the monitor, the monitor interface cable, the video mem-ory, or the video logic of the computer. You can also have a high-resolution video expansion card installed, which overrides the video logic of the computer.

The following procedure troubleshoots problems with the video memory and video logic only. Before you begin, perform the procedure found in "Troubleshooting the Monitor" in Chapter 6 to determine whether or not the monitor is the source of the problem.

If you have a high-resolution video expansion card, first complete the steps in "Trou-bleshooting Expansion Cards" in Chapter 7 to verify that the card is configured and installed correctly.

To troubleshoot the video subsystem, perform the following steps:

1. Run the video tests in the Dell Diagnostics.

See Chapter 5, “Running the Dell Diagnostics.”

Did the tests run successfully?

Yes. The problem is not related to video hardware. Go to Chapter 4, "Finding Soft-ware Solutions."

No. Go to step 2.

2. Turn off the system, including any attached peripherals, and disconnect the power cable from the electrical outlet.

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3. Open the panel doors on top of the computer.

See “Accessing the Interior of Your System” found earlier in this chapter.

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4. Determine whether a video expansion card is installed.

Is a video expansion card installed?

Yes. Go to step 5.

No. The integrated video controller is faulty. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.

5. Remove the video expansion card, and connect the monitor interface cable to the video connector on the computer's back panel.

6. Close the computer panel doors, reconnect the system to AC power, and turn on the system.

Did the tests run successfully?

Yes. The video expansion card is faulty. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.

No. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.

!���"������������������������A system board problem can result from a defective system board component, a faulty power supply, or a defective component connected to the system board. If an error message indicates a system board problem, perform the following steps to trou-bleshoot the problem:

1. Turn off the system, including any attached peripherals, and disconnect the sys-tem from its electrical outlet.

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2. Open the panel doors on top of the computer.

See “Accessing the Interior of Your System” found earlier in this chapter.

3. Remove all expansion cards except the SCSI host adapter card and the video expansion card (if they are installed).

See “Removing an Expansion Card” in Chapter 8.

4. Close the computer panel doors, reconnect the system to AC power, and turn on the system.

5. Run the system board tests in the Dell Diagnostics.

Did the tests run successfully?

Yes. Go to step 6.

No. Go to step 11.

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6. Turn off the system, disconnect it from AC power, and open the panel doors.

7. Reinstall one of the expansion cards that you removed in step 3.

8. Close the computer panel doors, reconnect the system to AC power, and turn on the system.

9. Run the system board tests again.

Did the tests run successfully?

Yes. Go to step 10.

No. Go to step 11.

10. Repeat steps 7 through 9 for each of the remaining expansion cards that you removed in step 3.

Have you reinstalled all of the expansion cards without a test failure?

Yes. Go to step 11.

No. One of the expansion cards is faulty. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.

11. The system board is faulty. See Chapter 11, "Getting Help," for instructions on obtaining technical assistance.

!���"�������������$��*���$�������"������If the monitor displays a system error message indicating a diskette drive problem during execution of either the boot routine or the Dell Diagnostics, the problem may be caused by any of the following conditions:

� The system configuration settings do not match the physical diskette subsystem configuration.

� The diskette drive cable is not properly connected or is faulty.

� An expansion card is interfering with proper drive operations.

� The diskette drive is improperly configured.

� The diskette drive is faulty.

� The computer's power supply is not providing sufficient power for the drives.

� The computer's diskette drive logic is faulty.

� The interposer card may have failed or the cable on the interposer card is faulty.

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To troubleshoot the diskette drive subsystem, perform the following steps:

1. Enter the System Setup program, and verify that the system is configured cor-rectly for the Diskette Drive A setting.

See "Using the System Setup Program" in the User's Guide for instructions.

2. If the system configuration settings are incorrect, make the necessary correc-tions in the System Setup program, and then reboot the system.

3. Run the diskette drives test in the Dell Diagnostics to determine whether the dis-kette drive subsystem now works correctly.

See Chapter 5, “Running the Dell Diagnostics,” for more information.

Do the tests complete successfully?

Yes. If you were in the middle of another procedure, continue with the next step in the procedure you were performing.

No. Go to step 4.

4. Turn off the system, including any attached peripherals, and disconnect the AC power cable from its power source.

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5. Open the panel doors on top of the computer.

See “Accessing the Interior of Your System” found earlier in this chapter.

6. Remove the fan assembly.

See “Troubleshooting the Fan Assembly” found earlier in this chapter.

7. Check the diskette drive cabling.

Is the connector on the back of the interposer card securely connected to the diskette drive interface cable connector?

Is the DC power cable firmly connected to the interposer card?

Is the diskette drive interface cable connector securely connected to the interface connector labeled “FLOPPY” on the system board?

Is the cable on the interposer card securely connected to the diskette drive?

Yes. Go to step 9.

No. Go to step 8.

8. Reconnect the cable connectors.

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9. Replace the fan assembly.

10. Close the computer panel doors, reconnect the system to the AC power source, and turn on the system.

11. Run the diskette drives test in the Dell Diagnostics to determine whether the dis-kette drive subsystem now works correctly.

Do the tests complete successfully?

Yes. You have fixed the problem.

No. Go to step 12.

12. Shut down and unplug the system, open the panel doors, and remove all expan-sion cards.

13. Close the panel doors, reconnect the system to AC power, and turn on the system.

14. Run the diskette drives test in the Dell Diagnostics to determine whether the dis-kette drive subsystem now works correctly.

Do the tests complete successfully?

Yes. An expansion card may be conflicting with the diskette drive logic, or you may have a faulty expansion card.

No. Go to step 15.

15. Shut down and unplug the system, open the panel doors, and reinstall one of the expansion cards that you removed in step 12.

16. Close the panel doors, reconnect the system to AC power, and turn on the system.

17. Run the diskette drive tests in the Dell Diagnostics to determine whether the dis-kette drive subsystem now works correctly.

18. Repeat steps 14 through 17 until all expansion cards have been reinstalled or until one of the expansion cards prevents the system from booting from the diagnos-tics diskette.

19. Has an expansion card prevented the system from booting from the diagnostics diskette?

Yes. An expansion card is faulty. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.

No. The diskette drive subsystem is faulty. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.

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!���"��������������� �!����$�����������������An external SCSI tape drive or autoloader can be attached to an external connector on a SCSI host adapter card installed in the computer. The SCSI tape drive is controlled by a SCSI host adapter card installed in the computer, which may also control other SCSI devices connected to one or more SCSI cables. SCSI devices often require device drivers for the particular operating system being used by the computer system.

Tape drive and autoloader problems often result from a defective tape drive, a defec-tive tape cartridge, or software. To troubleshoot a SCSI tape drive or autoloader, perform the following steps:

1. Remove the tape that was in use when the problem occurred, and replace it with a tape that you know is not defective.

Is the problem resolved?

Yes. The original tape was defective. Replace it with a new tape. You have fixed the problem.

No. Go to step 2.

2. Verify that any required SCSI device drivers are installed and are configured correctly.

See "Installing and Configuring SCSI Drivers" in the User's Guide for instructions on installing and configuring the SCSI device drivers for a Dell PowerEdge Expandable RAID Controller (PERC) 2 host adapter card. For any other type of SCSI host adapter card, see the documentation that accompanied the SCSI host adapter card.

Are the drivers installed and configured correctly?

Yes. The SCSI device drivers were installed or configured incorrectly or were cor-rupted. You have fixed the problem.

No. Go to step 3.

3. Reinstall the tape backup software as instructed in the tape-backup software documentation.

Is the problem resolved?

Yes. The tape backup software was corrupted. You have fixed the problem.

No. Go to step 4.

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4. Reboot the system and check for the presence of the drive during the optional ROM scan sequence.

Is the problem resolved?

Yes. The drive is correctly cabled and is receiving power. Go to step 9.

No. Go to step 5.

5. Turn off the system, including any attached peripherals, and disconnect the AC power cable from its power source.

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6. Check the SCSI cable connections to the drive and to the SCSI host adapter connector.

Are the cables firmly connected?

Yes. Go to step 8.

No. Go to step 7.

7. Reseat the cable connectors. Reconnect the system to AC power and turn it on.

Is the problem resolved?

Yes. You have fixed the problem.

No. Go to step 8.

8. Turn off the system, including any attached peripherals, and disconnect the AC power cable from its power source.

9. Verify that the drive is configured for a unique SCSI ID number and that the drive is terminated or not terminated as appropriate.

See the documentation for the tape drive for instructions on selecting the SCSI ID and enabling or disabling termination.

Is the tape drive configured correctly?

Yes. Go to step 11.

No. Go to step 10.

10. Reconfigure the drive's SCSI ID and termination settings as appropriate. Recon-nect the system to AC power and turn it on.

Is the problem resolved?

Yes. The drive was configured incorrectly. You have fixed the problem.

No. Go to step 11.

11. Turn off the system, including any attached peripherals, and disconnect the AC power cable from its power source.

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12. Replace the SCSI cable that connects the drive to the SCSI host adapter. Recon-nect the system to AC power and turn it on.

Is the problem resolved?

Yes. You have fixed the problem.

No. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.

!���"������������� �+���,$��*�$�����Hard-disk drive problems can be caused by a number of conditions, including prob-lems with the drive itself, the SCSI backplane board, or a cable connected to the SCSI backplane board.

The SCSI backplane board monitors the SCSI hard-disk drives connected to the back-plane board. In the event of a drive failure, systems using an optional Dell PERC 2 controller card will issue the following signals using the drive indicator lights adjacent to each SCSI hard-disk drive:

� If a drive shows signs of imminent failure, the green drive online indicator stays on and the amber drive failure indicator blinks on briefly each second.

� If a drive has failed, the green drive online indicator turns off. The amber drive fail-ure indicator turns on, and blinks off briefly each second.

Other drive indicator patterns are listed in Table 3-3.

To troubleshoot a hard-disk drive problem, perform the following steps.

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1. Verify that the SCSI device drivers are installed and configured correctly.

See "Installing and Configuring SCSI Drivers" in the User's Guide to determine which drivers are required and how they should be installed and configured.

Are the required SCSI device drivers installed and configured correctly?

Yes. Go to step 3.

No. Go to step 2.

2. Reinstall and/or reconfigure the required SCSI device drivers. Then reboot the system.

Is the problem resolved?

Yes. You have fixed the problem.

No. Go to step 3.

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3. Remove the drive carrier and install it in another drive bay.

Is the problem resolved?

Yes. The SCSI backplane board has a defective connector. See Chapter 11, “Get-ting Help,” for instructions on obtaining technical assistance.

No. Go to step 4.

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4. Open the panel doors on top of the computer.

See “Accessing the Interior of Your System” found earlier in this chapter.

5. Check the SCSI cable connections to the SCSI backplane board and to the SCSI host adapter. Check the DC power cable connection to the SCSI backplane board.

The SCSI cable may be connected to one of the SCSI connectors on the system board, or to a SCSI host adapter card in an expansion slot. See Chapter 10, "Installing Hard-Disk Drives," for the location of the cable connectors on the SCSI backplane board and the SCSI host adapter.

Are the cables firmly connected?

Yes. Go to step 6.

No. Go to step 7.

6. Reseat the cable connectors and close the panel doors. Reconnect the system to AC power and turn it on.

Is the problem resolved?

Yes. You have fixed the problem.

No. Go to step 7.

7. Partition and logically format the hard-disk drive. If possible, restore the files to the drive.

To partition and logically format the drive, see the documentation for the com-puter's operating system.

Is the problem resolved?

Yes. The hard-disk drive format was corrupted. You have fixed the problem.

No. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.

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!���"�������������� $����������Your system may contain an optional Dell PERC controller card.

If you encounter problems with a PERC 2 controller card, perform the following steps to help diagnose the problem:

1. Using the Dell Flexible Array Storage Tool (FAST) utility program, select the controller.

See the Dell Flexible Array Storage Tool (FAST) User's Guide for details.

2. Using Microsoft Explorer, open the Program Files/Dell PERC2/System folder.

3. Double-click the getcfg.afa file.

Two new files will be generated—cfg.log and cfg.str. Save these files.

4. See Chapter 11, “Getting Help,” for instructions on obtaining technical assis-tance. E-mail these two files for analysis when you contact Dell.

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