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CAUTION:
The power-control button on the device and the power switch on the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one power cord. To
remove all electrical current from the device, ensure that all power cords are disconnected from the
power source.
To remove the CMOS battery, complete the following steps:
Watch the procedure. A video of the removal process is available:
• YouTube:
https://www.youtube.com/playlist?list=PLYV5R7hVcs-AQrHuDWK6L3KtHWc6maY_O
• Youku:
http://list.youku.com/albumlist/show/id_50437162
Step 1.
Remove the top cover. See "Remove the top cover" on page 57.
Step 2.
Locate the CMOS battery, see "System board components" on page 27.
Step 3.
Press the battery clip as shown and carefully lift CMOS battery out of the socket.
Attention: Do not tilt or push the CMOS battery using excessive force. Failing to remove the
CMOS battery properly might damage the socket on the system board. Any damage to the socket
might require replacing the system board.
Figure 59. CMOS battery removal
After removing the CMOS battery:
1. Install a new CMOS battery.
2. Dispose of the CMOS battery as required by local ordinances or regulations.
.
Chapter 3
Hardware replacement procedures
93
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