Dell PowerEdge T40 EMC Installation and Service Manual - Page 78

Disabling forgotten password

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Table 20. System board jumper details Jumper Function CO21 PASSWORD_CLR P_CMOCLR CMOS_CLR P_SVRMOD SERVICE_MODE Operation Short: Default Open: Clear Short: Clear Open: Default 1-2 Short: Disable 2-3 Short: Default Disabling forgotten password The software security features of the system include a system password and a setup password. The password jumper enables or disables password features and clears any password(s) currently in use. Prerequisites CAUTION: Many repairs may only be done by a certified service technician. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that are shipped with your product. Steps 1. Power off the system, including any attached peripherals, and disconnect the system from the electrical outlet. 2. Remove the system cover. 3. Move the jumper (CO21) on the system board jumper to "CLEAR" position. 4. Install the system cover. The existing passwords are not disabled (erased) until the system boots with the jumper on "CLEAR" position. However, before you assign a new system and/or setup password, you must move the jumper back to "DEFAULT" position. NOTE: If you assign a new system and/or setup password with the jumper on "CLEAR" position, the system disables the new password(s) the next time it boots. 5. Reconnect the system to its electrical outlet and power on the system, including any attached peripherals. 6. Power off the system, including any attached peripherals, and disconnect the system from the electrical outlet. 7. Remove the system cover. 8. Move the jumper on the system board jumper back to "DEFAULT" position. 9. Install the system cover. 10. Reconnect the system to its electrical outlet and power on the system, including any attached peripherals. 11. Assign a new system and/or setup password. 78 Jumpers and connectors

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Table 20. System board jumper details
Jumper
Function
Operation
CO21
PASSWORD_CLR
Short: Default
Open: Clear
P_CMOCLR
CMOS_CLR
Short: Clear
Open: Default
P_SVRMOD
SERVICE_MODE
1-2 Short: Disable
2-3 Short: Default
Disabling forgotten password
The software security features of the system include a system password and a setup password. The password jumper enables or disables
password features and clears any password(s) currently in use.
Prerequisites
CAUTION:
Many repairs may only be done by a certified service technician. Damage due to servicing that is not
authorized by Dell is not covered by your warranty. Read and follow the safety instructions that are shipped with your
product.
Steps
1.
Power off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2.
Remove the system cover.
3.
Move the jumper (CO21) on the system board jumper to "CLEAR" position.
4.
Install the system cover.
The existing passwords are not disabled (erased) until the system boots with the jumper on "CLEAR" position. However, before you
assign a new system and/or setup password, you must move the jumper back to "DEFAULT" position.
NOTE:
If you assign a new system and/or setup password with the jumper on "CLEAR" position, the system disables
the new password(s) the next time it boots.
5.
Reconnect the system to its electrical outlet and power on the system, including any attached peripherals.
6.
Power off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
7.
Remove the system cover.
8.
Move the jumper on the system board jumper back to "DEFAULT" position.
9.
Install the system cover.
10.
Reconnect the system to its electrical outlet and power on the system, including any attached peripherals.
11.
Assign a new system and/or setup password.
78
Jumpers and connectors