- Notes, cautions, and warnings
- Dell EMC PowerEdge C6420 overview
- Initial system setup and configuration
- Installing and removing enclosure components
- Safety instructions
- Before working inside your system
- After working inside your system
- Recommended tools
- Dell EMC PowerEdge C6420 sled
- PERC battery
- Air shroud
- System memory
- Support bracket
- Linking board and PCIe cable
- Processor and heat sink module
- Removing a processor and heat sink module
- Installing a processor and heat sink module
- Removing the fabric processor from the processor heat sink module
- Installing the fabric processor into the processor heat sink module
- Removing the non-fabric processor from the processor and heat sink module
- Installing the non-fabric processor into a processor and heat sink module
- Removing the fabric and sideband cables
- Installing the fabric and sideband cables
- Expansion cards
- PCIe slot priority
- Removing the expansion card riser assembly
- Installing the expansion card riser assembly
- Removing an expansion card
- Installing an expansion card
- Removing the riser card
- Installing the riser card
- Removing the M.2 SATA x16 riser
- Installing the M.2 SATA x16 riser
- Removing the M.2 SATA card
- Installing the M.2 SATA card
- M.2 SSD module
- Mezzanine and OCP cards
- System battery
- System board
- Trusted Platform Module
- System diagnostics
- Jumpers and connectors
- Getting help
- Documentation resources
Dell EMC PowerEdge C6420 Installation and Service Manual
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. 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 are
shipped with your product.
Steps
- Power off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
- Remove the system cover.
- Move the jumper on the system board jumper from pins 2 and 4 to pins 4 and 6.
- Install the system cover.
The existing passwords are not disabled (erased) until the system boots with the jumper on pins 4 and 6. However, before you assign a new system and/or setup password, you must move the jumper back to pins 2 and 4.
NOTE If you assign a new system and/or setup password with the jumper on pins 4 and 6, the system disables the new password(s) the next time it boots. - Reconnect the system to its electrical outlet and power on the system, including any attached peripherals.
- Power off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
- Remove the system cover.
- Move the jumper on the system board jumper from pins 4 and 6 to pins 2 and 4.
- Install the system cover.
- Reconnect the system to its electrical outlet and power on the system, including any attached peripherals.
- Assign a new system and/or setup password.
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