Removal And Replacement Procedures For Authorized Service Provider Parts; Component Replacement Procedures; Rtc Battery - HP EliteBook 820 G1 Maintenance And Service Manual

6 Removal and replacement
procedures for Authorized Service
Provider parts
NOTE:
Components described in this chapter should only be accessed by an authorized service
provider. Accessing these parts can damage the computer or void the warranty.
NOTE: HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and
then follow the on-screen instructions.

Component replacement procedures

This chapter provides removal and replacement procedures for Authorized Service Provider only parts.
There are as many as 54 screws that must be removed, replaced, and/or loosened when servicing the
computer. Make special note of each screw size and location during removal and replacement.

RTC battery

Description
RTC battery (includes cable and double-sided adhesive)
Before removing the RTC battery, follow these steps:
1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2.
Disconnect the power from the computer by unplugging the power cord from the computer.
3.
Disconnect all external devices from the computer.
4.
Remove the service cover (see
5.
Remove the battery (see
6.
Remove the keyboard (see
ENWW
Service cover on page
Battery on page 73).
Keyboard on page 85).
71).
Component replacement procedures
Spare part number
702853-001
93