Compaq 420C 486 DX4/75 MHZ 350 MB 4 MB 10.4 Personal Computer User Manual


 
5. To replace the battery release button and spring, reverse the previous
steps.
Chapter 3.9 Real-Time Clock Battery (Models 400 and 410)
To remove the real-time clock battery, follow these steps:
1. Disconnect all power from the computer and remove the AC Adapter and
battery pack (Section 3.2).
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
The computer becomes top heavy when the keyboard assembly is removed and
the display is opened. To prevent damage to the display and the computer,
ensure that the display assembly is opened to a 90-degree angle.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
2. Remove the keyboard assembly (Section 3.7).
3. Remove the real-time clock battery from the system board by inserting a