HP xw4550 Service And Technical Reference Manual page 5

Fault notification and recovery ........................................................................................... 47
Dual-State Power Button ................................................................................................... 48
4 Removal and replacement procedures
Warnings and cautions ....................................................................................................................... 50
Service considerations ....................................................................................................................... 52
Cautions, warnings, and safety precautions ...................................................................... 52
Electrostatic discharge information .................................................................................... 52
Tools and software requirements ...................................................................................... 54
Screws ............................................................................................................................... 54
Special handling of components ........................................................................................ 55
Customer Self-Repair ......................................................................................................................... 56
Predisassembly procedures ............................................................................................................... 57
System board components ................................................................................................................. 58
Steps for removing and replacing components .................................................................................. 60
Disassembly order ............................................................................................................ 60
The optional security lock .................................................................................................. 61
The optional cable lock ...................................................................................................... 62
ENWW
Establishing a power-on password using workstation setup ............ 40
Entering a power-on password ........................................................ 40
Entering a Setup Password .............................................................. 41
Changing a power-on or setup password ......................................... 41
Deleting a power-on or setup password ............................................................ 42
National keyboard delimiter characters ............................................ 42
Clearing passwords .......................................................................... 42
The DriveLock security feature ......................................................................... 43
DriveLock applications ...................................................................... 43
Using DriveLock ............................................................................... 43
Hood sensor option (smart cover sensor) ........................................................ 45
Setting the hood sensor protection level ......................................... 45
Hood lock (smart cover lock) ............................................................................. 45
Locking the solenoid lock ................................................................. 46
Unlocking the solenoid lock .............................................................. 46
Using a FailSafe key ......................................................................... 46
Clearing Passwords .......................................................................... 47
Cable lock provision (optional) .......................................................................... 47
Security lock (optional) ...................................................................................... 47
Hood lock (Smart cover lock) (optional) ............................................................ 47
Hood sensor (Smart cover sensor) (optional) ................................................... 47
Drive Protection System .................................................................................... 47
ECC fault prediction and prefailure warranty .................................................... 47
Thermal sensor ................................................................................................. 48
Generating static electricity ............................................................................... 52
Preventing electrostatic damage to equipment ................................................. 53
Personal grounding methods and equipment .................................................. 53
Grounding the work area ................................................................................... 53
Recommended materials and equipment ......................................................... 54
Cables and connectors ..................................................................................... 55
Hard drives ........................................................................................................ 56
Lithium coin cell battery ..................................................................................... 56
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