Dell PowerEdge 2900 Hardware Owner's Manual (PDF) - Page 144

Disabling a Forgotten Password, Jumpers and Connectors, power connector, SAS_B_IN connector

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Figure 6-4. 1x2 SAS Backplane Connectors 1 2 3 1 power connector 2 SAS_B_IN connector 3 SAS_B_OUT connector Disabling a Forgotten Password The password jumper on the system board enables the system password features or disables them and clears any password(s) currently in use. CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge. 1 Turn off the system and attached peripherals, and disconnect the system from the electrical outlet. 2 Remove the bezel, if attached. See "Removing the Bezel" on page 50. 3 Open the system. See "Opening the System" on page 53. 4 Note the cable connections on the SAS daughter card, and then disconnect the cables from the storage daughter card and extend the cables away from the center fan bracket. 5 Remove the fans from the center fan bracket. See "Removing and Installing a Fan" on page 65. 6 Remove the center fan bracket. See "Removing the Center Fan Bracket" on page 81. 7 Remove the password jumper plug. See Figure 6-1 to locate the password jumper on the system board. 8 Replace the center fan bracket (see "Replacing the Center Fan Bracket" on page 81) and replace the fans in the bracket. 9 Reconnect the storage daughter card cables. 144 Jumpers and Connectors

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144
Jumpers and Connectors
Figure 6-4.
1x2 SAS Backplane Connectors
Disabling a Forgotten Password
The password jumper on the system board enables the system password features or disables them and clears
any password(s) currently in use.
CAUTION:
Only trained service technicians are authorized to remove the system cover and access any of the
components inside the system. See your
Product Information Guide
for complete information about safety
precautions, working inside the computer, and protecting against electrostatic discharge.
1
Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2
Remove the bezel, if attached. See "Removing the Bezel" on page 50.
3
Open the system. See "Opening the System" on page 53.
4
Note the cable connections on the SAS daughter card, and then disconnect the cables from the storage
daughter card and extend the cables away from the center fan bracket.
5
Remove the fans from the center fan bracket. See "Removing and Installing a Fan" on page 65.
6
Remove the center fan bracket. See "Removing the Center Fan Bracket" on page 81.
7
Remove the password jumper plug.
See Figure 6-1 to locate the password jumper on the system board.
8
Replace the center fan bracket (see "Replacing the Center Fan Bracket" on page 81) and replace the
fans in the bracket.
9
Reconnect the storage daughter card cables.
1
power connector
2
SAS_B_IN connector
3
SAS_B_OUT connector
1
2
3