Personal Computer User Manual
Table Of Contents
- Hardware Owner’s Manual
- Contents
- About Your System
- Using the System Setup Program
- Installing System Components
- Recommended Tools
- Inside the System
- Removing and Replacing the Optional Front Bezel
- Opening and Closing the System
- Cooling Fans
- Cooling Shrouds
- Power Supplies
- Expansion Cards
- RAC Card
- System Memory
- Processors
- Processor VRMs
- Installing a Diskette Drive
- Installing an Optical Drive
- Hard Drives
- SAS Controller Cards
- Connecting an External SAS Tape Drive
- Connecting an External Fibre Channel Storage Device
- System Battery
- Control Panel Assembly (Service-Only Procedure)
- Fan Interposer Board (Service-Only Procedure)
- Power Distribution Board (Service-Only Procedure)
- Chassis Intrusion Switch (Service-Only Procedure)
- SAS Backplane (Service-Only Procedure)
- System Board (Service-Only Procedure)
- Troubleshooting Your System
- Safety First-For You and Your System
- Start-Up Routine
- Checking Basic Power Problems
- Checking the Equipment
- Troubleshooting Serial I/O Problems
- Troubleshooting a NIC
- Troubleshooting a Wet System
- Troubleshooting a Damaged System
- Troubleshooting the System Battery
- Troubleshooting Power Supplies
- Troubleshooting System Cooling Problems
- Troubleshooting System Memory
- Troubleshooting a Diskette Drive
- Troubleshooting an Optical Drive
- Troubleshooting a Hard Drive
- Troubleshooting a SAS Controller or SAS RAID Controller
- Troubleshooting an External SAS Tape Drive
- Troubleshooting Expansion Cards
- Troubleshooting the Microprocessors
- Running the System Diagnostics
- Jumpers and Connectors
- Getting Help
- Glossary
- Index

46 Installing System Components
Figure 3-2. Removing and Replacing the Optional Front Bezel
To replace the optional bezel, hook the right end of the bezel onto the chassis, then fit the free end of the
bezel onto the system. Secure the bezel with the keylock. See Figure 3-2.
Opening and Closing the System
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the
components inside the system. See your Product Information Guide for complete information about safety
precautions, working inside the computer, and protecting against electrostatic discharge.
CAUTION: Whenever you need to lift the system, get others to assist you. To avoid injury, do not attempt to lift the
system by yourself.
Opening the System
1
Unless you are installing a hot-plug component such as a cooling fan or hard-disk drive, turn off the
system and attached peripherals, and disconnect the system from the electrical outlet and peripherals.
2
Rotate the latch release lock on the latch in a counter clockwise direction to the unlocked position. See
Figure 3-3.
3
Lift up on the latch on top of the system and slide the cover back. See Figure 3-3.
4
Grasp the cover on both sides and carefully lift the cover away from the system.
1 key lock 2 bezel
2
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