HP 9000 rp8420 Server - User Service Guide, Fifth Edition

Other FRUs
To remove and replace the FRUs that are neither hot-plug nor hot-swap, HP-UX must be shut
down in the nPartition where the FRU resides, and power to the FRU must be turned off before
removing it. See “Powering down Hardware Components and Powering on the Server” (page 103)
for complete instructions.
These FRUs include:
• Removing and Replacing a Cell Board
• Removing and Replacing the Core I/O
• Removing and Replacing a Removable Media Drive
• Removing and Replacing DIMMs
• Removing and Replacing the Front Panel Board
• Removing and Replacing the PCI-X Card Cage Assembly
• Removing and Replacing the PCI OLR Assembly
• Removing and Replacing a PCI Power Supply
• Removing and Replacing a System Backplane
• Removing and Replacing a Central Processing Unit
Safety and Environmental Considerations
WARNING! Before proceeding with any installation, maintenance, or service on a system that
requires physical contact with electrical or electronic components, be sure that either power is
removed or safety precautions are followed to protect against electric shock and equipment
damage. Observe all WARNING and CAUTION labels on equipment. All installation and service
work must be done by qualified personnel.
Communications Interference
HP system compliance tests are conducted with HP supported peripheral devices and shielded
cables, such as those received with the system. The system meets interference requirements of
all countries in which it is sold. These requirements provide reasonable protection against
interference with radio and television communications.
Installing and using the system in strict accordance with HP instructions minimizes the chances
that the system will cause radio or television interference. However, HP does not guarantee that
the system will not interfere with radio and television reception.
Take these precautions:
• Use only shielded cables.
• Install and route the cables according to the instructions provided.
• Ensure that all cable connector screws are firmly tightened.
• Use only HP supported peripheral devices.
• Ensure that all panels and cover plates are in place and secure before system operation.
102 Removal and Replacement