Compaq 315eu Maintenance and Service Guide - Compaq 100eu Small Form Factor, 1 - Page 114
Replacing the Battery
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When installing a system board, make sure the connectors are correctly aligned with the rear I/O panel. Figure 7-31 Rear I/O Panel NOTE: When replacing the system board, you must change the chassis serial number in the BIOS. Replacing the Battery The battery that comes with the computer provides power to the real-time clock. When replacing the battery, use a battery equivalent to the battery originally installed in the computer. The computer comes with a 3-volt lithium coin cell battery. WARNING! The computer contains an internal lithium manganese dioxide battery. There is a risk of fire and burns if the battery is not handled properly. To reduce the risk of personal injury: Do not attempt to recharge the battery. Do not expose to temperatures higher than 60°C (140ºF). Do not disassemble, crush, puncture, short external contacts, or dispose of in fire or water. Replace the battery only with the HP spare designated for this product. CAUTION: Before replacing the battery, it is important to back up the computer CMOS settings. When the battery is removed or replaced, the CMOS settings will be cleared. Refer to the Computer Setup (F10) Utility Guide for information on backing up the CMOS settings. Static electricity can damage the electronic components of the computer or optional equipment. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object. NOTE: The lifetime of the lithium battery can be extended by plugging the computer into a live AC wall socket. The lithium battery is only used when the computer is NOT connected to AC power. HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable batteries. For more information about recycling programs, go to http://www.hp.com/ recycle. 1. Prepare the computer for disassembly (Preparation for Disassembly on page 43). 2. Remove the access panel (Access Panel on page 78). 3. Remove the front bezel (Front Bezel on page 79). 4. Remove the optical drive (Removing an Optical Drive on page 87). 5. Locate the battery and battery holder on the system board. 104 Chapter 7 Removal and Replacement Procedures Small Form Factor (SFF) Chassis