HP Z220 SFF, Z220 CMT, Z420, Z620, and Z820 Workstations Maintenance and Service Guide
Product recycling
HP encourages customers to recycle used electronic hardware, HP original print cartridges, and
rechargeable batteries.
For information about recycling HP components or products, see
http://www.hp.com/go/recycle.
Component replacement guidelines
This section provides information and guidelines for removal and replacement procedures. It does not
document the step-by-step procedures.
IMPORTANT: Removal and replacement procedures are now available in videos on the HP
website.
Go to the HP Customer Self Repair Services Media Library at
http://www.hp.com/go/sml. In Media
Selection, choose the Desktops & Workstations product category and the Personal Workstations
product family, then choose your platform
This chapter provides guidelines for removal and replacement procedures.
Battery on page 77
Cable management on page 78
CPU (processor) and CPU heatsink on page 79
Expansion slots on page 80
Hard disk drives and optical disc drives on page 91
Memory on page 98
Power supply specifications on page 104
System board on page 106
Battery
The battery that comes with the computer provides power to the real-time clock and has a minimum
lifetime of about three years. Observe the following warning and caution when replacing the battery.
WARNING! HP Z Series Workstations use lithium batteries. There is a risk of fire and chemical burn
if the battery is handled improperly. Do not disassemble, crush, puncture, short external contacts,
dispose of in water or fire, or expose battery to temperatures higher than 60°C (140°F).
CAUTION: Before removing the battery, back up the CMOS settings in case they are lost when the
battery is removed. Use Computer Setup (F10) Utility to back up the settings.
NOTE: Do not dispose of batteries, battery packs, and accumulators with general household waste.
Product recycling 77