Compaq Deskpro 2000 Series of Personal Computers 5-21
5.13 Replacement Battery
The real-time clock battery that came with the computer is non-replaceable and is permanently
installed on the system board.
!
WARNING:
The system board contains a clock/CMOS lithium battery. The lithium battery may explode if
mistreated. The battery is soldered into place and may not be removed. Do not abuse or disassemble. Use
only replacement batteries supplied by Compaq Computer Corporation.
✎
It is important to make a set of backup diagnostic diskettes before you install a new battery.
To install the external real-time battery, complete the following steps::
1. Remove the system unit cover (Section 5.6).
2. Connect the new battery to the pins on the battery header connector on the system board. The
battery connector is labeled “E9 Ext. Batt.” on the Pentium system board and labeled “Ext. Batt.”
on the Pentium II system board. When this battery is connected, the internal battery is
automatically disconnected.
The battery connector is keyed for proper installation.
3. Remove the backing from the adhesive on the hook-and-loop fastener strip attached to the battery,
and attach the battery as shown.
Figure 5-19.
Installing the Battery, Pentium System
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