HP Xw8400 HP xw8400 Service and Technical Reference Guide - Page 88

Battery CAUTION Before removing the battery, be sure your CMOS settings are backed up because all CMOS settings are lost when the battery is removed. To back up the CMOS settings, use Computer Setup and run the Save to Diskette option from the File menu. 1. Disconnect power from the system ( Pre-disassembly procedures on page 55), and remove the access panel (Access panel on page 60). Place the workstation on its side with the system board facing up. 2. On the system board, press on the release tab of the battery holder. 3. Rotate the battery enough to get beyond the latch, and lift it straight up. Figure 4-26 Removing the battery To install the battery slide the battery back in until it snaps back into place. Power connections to drives For help in identifying power cables, refer to the following figure and table. Route or tie cables so that they cannot interfere with the CPU heatsink fans. CAUTION Be sure you can differentiate which power cable connects to the PCI Express x16 graphics card and which power cable connects to the system board. These two cables look very similar. The PCI Express power cable has a black connector, and the power cable has a white connector. When power is present, you must NEVER connect the PCI Express power cable to the system board. If you do so, the system board may be damaged and your warranty voided. To see a picture of the PCI Express cable and where it must be connected, see the PCI or PCI Express installation on page 75. 78 Chapter 4 Removal and replacement procedures ENWW