Owners Manual

Related references
Getting help on page 157
Using system diagnostics on page 141
Related tasks
Removing the system cover on page 54
Installing a heat sink on page 112
Installing a processor on page 111
Installing memory modules on page 67
Installing a hot-swappable hard drive carrier on page 69
Installing the hard drive backplane on page 128
Installing the system cover on page 55
Troubleshooting the system battery
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.
NOTE: If the system is turned off for long periods of time (for weeks or months), the NVRAM may lose the system
configuration information. This situation is caused by a defective battery.
NOTE: Some software may cause the system time to speed up or slow down. If the system seems to operate normally
except for the time set in System Setup, the problem may be caused by a software, rather than by a defective battery.
Steps
1. Re-enter the time and date in System Setup.
2. Turn off the system, and disconnect it from the electrical outlet for at least an hour.
3. Reconnect the system to the electrical outlet, and turn on the system.
4. Enter System Setup.
If the date and time displayed in System Setup are not correct, check the System Error Log (SEL) for system battery
messages.
Related concepts
System Setup on page 26
Related references
Getting help on page 157
Troubleshooting power supply units
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.
The following sections provide information on troubleshooting power source and power supply units problems.
150
Troubleshooting your system