Installation guide

Removal and Replacement Procedures
7. Tilt the front edge of the power button/LED board down until the keyholes on the rear of
the board clear the alignment pins (1).
8. Slide the power button/LED board out of the front of the chassis (2).
Figure 2-24: Removing the power button/LED board
IMPORTANT: When replacing the power button/LED board on server models marked with an I/O icon,
be sure the tab at the end of the power button/LED cable is inserted under the power button/LED board
bezel.
Reverse steps 1 through 8 to replace the power button/LED board.
Battery
If the server blade no longer automatically displays the correct date and time, you may need
to replace the battery that provides power to the real-time clock. Under normal use, battery
life is 5 to 10 years.
WARNING: This server blade contains either an internal lithium manganese dioxide or
a vanadium pentoxide battery. A risk of fire and burns exists if the battery pack 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 (140° F).
• Do not disassemble, crush, puncture, short external contacts, or dispose of in fire
or water.
• Replace only with the spare designated for this product.
HP ProLiant BL20p Generation 2 Server Blade Maintenance and Service Guide 2-25