Troubleshooting the RTC Chip
If an error message indicates a problem with the
Follow these steps to troubleshoot the RTC chip:
1.Turn off the system, including any attached peripherals, and disconnect all the AC power cables from their power sources.
2.Remove the left computer cover.
See “Removing the Computer Covers” earlier in this chapter.
CAUTION: See “Protecting Against Electro- static Discharge” in the safety instructions at the front of this guide.
3.Check the connection of the RTC chip to the sys- tem board.
Is the RTC chip firmly installed in the socket on the system board?
Yes. Go to step 5.
No. Continue to step 4.
4.Reseat the RTC chip in its socket. Is the problem resolved?
Yes. The RTC chip was loose. You have fixed the problem.
No. Continue to step 5.
5.Replace the RTC chip.
See “Replacing the RTC Chip” in Chapter 8 for instructions on replacing the RTC chip.
Is the problem resolved?
Yes. The RTC chip’s charge was low. You have fixed the problem.
No. See Chapter 11, “Getting Help,” for instructions on obtaining technical assistance.
Troubleshooting and Replacing the Battery on the Control Panel
The battery on the control panel stores the power state of the system. For example, if a power failure occurs while the system is running, the system will remain on when power is restored. However, if the system does not keep its power state during a power interruption, you should replace the battery. Follow these steps to replace the bat- tery on the control panel:
1.Turn off the system, including any attached peripherals, and disconnect all the AC power cables from their power sources.
2.Remove the left and right computer covers.
See “Removing the Computer Covers” earlier in this chapter.
CAUTION: See “Protecting Against Electro- static Discharge” in the safety instructions at the front of this guide.
3.Remove the front bezel.
See “Removing the Front Bezel” earlier in this chapter.
4.Remove the battery.
The battery is located just above the center of the control panel.
Pry the battery out of its socket with your fingers or a blunt, nonconductive object, such as a plastic screwdriver.
5.Install the new battery with the “+” side facing up (see Figure