- Computers & electronics
- Computer components
- System components
- Server/workstation motherboards
- HP
- C6Z78UT#ABA
- Service guide
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C Unlocking the Smart Cover Lock
NOTE: The Smart Cover Lock is an optional feature included on some models only.
The Smart Cover Lock is a software-controllable cover lock, controlled by the setup password. This lock prevents unauthorized access to the internal components. The computer ships with the
Smart Cover Lock in the unlocked position. For more information about locking the Smart Cover Lock, refer to the Desktop Management Guide.
Smart Cover FailSafe Key
If you enable the Smart Cover Lock and cannot enter your password to disable the lock, you will need a Smart Cover FailSafe Key to open the computer cover. You will need the key to access the internal computer components in any of the following circumstances:
● Power outage
● Startup failure
● PC component (for example, processor or power supply) failure
● Forgotten password
NOTE: The Smart Cover FailSafe Key is a specialized tool available from HP. Be prepared; order this key before you need it.
To obtain a FailSafe Key:
● Contact an authorized HP reseller or service provider. Order PN 166527-001 for the wrenchstyle key or PN 166527-002 for the screwdriver bit key.
● Refer to the HP Web site ( http://www.hp.com
) for ordering information.
● Call the appropriate number listed in the warranty or in the Support Telephone Numbers guide.
Smart Cover FailSafe Key 205
Using the Smart Cover FailSafe Key to Remove the Smart
Cover Lock
To open the access panel with the Smart Cover Lock engaged:
1.
Prepare the computer for disassembly.
2.
Use the Smart Cover FailSafe Key to remove the two tamper-proof screws that secure the Smart
Cover Lock to the chassis.
Figure C-1 Removing the Smart Cover Lock Screws from the Convertible Minitower
Figure C-2 Removing the Smart Cover Lock Screws from the Microtower
206 Appendix C Unlocking the Smart Cover Lock
Figure C-3 Removing the Smart Cover Lock Screws from the Small Form Factor
You can now remove the access panel.
To reattach the Smart Cover Lock, secure the lock in place with the tamper-proof screws.
Using the Smart Cover FailSafe Key to Remove the Smart Cover Lock 207
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Table of contents
- 11 Product Features
- 11 Standard Configuration Features
- 12 Microtower (MT) Front Panel Components
- 13 Small Form Factor (SFF) Front Panel Components
- 14 Microtower (MT) Rear Panel Components
- 15 Small Form Factor (SFF) Rear Panel Components
- 16 Serial Number Location
- 17 Installing and Customizing the Software
- 17 Installing the Windows Operating System
- 18 Downloading Microsoft Windows Updates
- 18 Installing or Upgrading Device Drivers (Windows systems)
- 18 Customizing the Monitor Display (Windows systems)
- 19 Launching Windows XP from Windows 7
- 19 Accessing Disk Image (ISO) Files
- 20 Computer Setup (F10) Utility
- 20 Computer Setup (F10) Utilities
- 21 Using Computer Setup (F10) Utilities
- 22 Computer Setup—File
- 23 Computer Setup—Storage
- 26 Computer Setup—Security
- 30 Computer Setup—Power
- 31 Computer Setup—Advanced
- 33 Recovering the Configuration Settings
- 34 Illustrated parts catalog
- 34 Microtower (MT) chassis spare parts
- 34 Computer major components
- 36 Cables
- 37 Misc parts
- 38 Drives
- 39 Misc boards
- 39 Sequential part number listing
- 43 Small Form Factor (SFF) chassis spare parts
- 43 Computer major components
- 45 Cables
- 46 Misc parts
- 48 Drives
- 48 Misc boards
- 49 Sequential part number listing
- 52 Routine Care, SATA Drive Guidelines, and Disassembly Preparation
- 52 Electrostatic Discharge Information
- 52 Generating Static
- 53 Preventing Electrostatic Damage to Equipment
- 53 Personal Grounding Methods and Equipment
- 54 Grounding the Work Area
- 54 Recommended Materials and Equipment
- 55 Operating Guidelines
- 55 Routine Care
- 55 General Cleaning Safety Precautions
- 55 Cleaning the Computer Case
- 56 Cleaning the Keyboard
- 56 Cleaning the Monitor
- 57 Cleaning the Mouse
- 57 Service Considerations
- 57 Power Supply Fan
- 57 Tools and Software Requirements
- 57 Screws
- 58 Cables and Connectors
- 58 Hard Drives
- 58 Lithium Coin Cell Battery
- 59 SATA Hard Drives
- 59 SATA Hard Drive Cables
- 59 SATA Data Cable
- 59 SMART ATA Drives
- 59 Cable Management
- 60 Hard Drive Capacities
- 61 Removal and Replacement Procedures Microtower (MT) Chassis
- 61 Preparation for Disassembly
- 62 Computer Access Panel
- 63 Front Bezel
- 64 Front Bezel Security
- 66 Bezel Blanks
- 67 Memory
- 67 DIMMs
- 67 DDR3-SDRAM DIMMs
- 67 Populating DIMM Sockets
- 68 Installing DIMMs
- 70 Expansion Cards
- 74 System Board Connections
- 76 Drives
- 78 Drive Positions
- 78 Removing a 5.25-inch or 3.5-inch Drive from a Drive Bay
- 79 Installing a 5.25-inch or 3.5-inch Drive into a Drive Bay
- 82 Removing a Hard Drive from a Drive Bay
- 82 Installing a Hard Drive into an Internal Drive Bay
- 86 Front Fan Assembly
- 88 Front I/O Assembly
- 89 Power Switch/LED Assembly
- 90 Heat sink
- 92 Processor
- 95 Speaker
- 96 Rear Chassis Fan
- 98 Power Supply
- 100 System Board
- 101 Removal and Replacement Procedures Small Form Factor (SFF) Chassis
- 101 Preparation for Disassembly
- 102 Access Panel
- 103 Front Bezel
- 104 Front Bezel Security
- 106 Bezel Blanks
- 107 Memory
- 107 DIMMs
- 107 DDR3-SDRAM DIMMs
- 107 Populating DIMM Sockets
- 108 Installing DIMMs
- 110 Expansion Card
- 114 System Board Connections
- 115 Drives
- 116 Drive Positions
- 116 Installing and Removing Drives
- 117 Removing a 5.25-inch Drive from a Drive Bay
- 118 Installing a 5.25-inch Drive into a Drive Bay
- 121 Removing a 3.5-inch Drive from a Drive Bay
- 122 Installing a 3.5-inch Drive into a Drive Bay
- 123 Removing and Replacing the Primary 3.5-inch Internal Hard Drive
- 126 Fan duct
- 127 Front Fan Assembly
- 129 Hood Sensor
- 130 Front I/O, Power Switch Assembly
- 132 Speaker
- 133 Heat sink
- 135 Processor
- 138 Power Supply
- 140 System Board
- 142 Using the Small Form Factor Computer in a Tower Orientation
- 143 Troubleshooting Without Diagnostics
- 143 Safety and Comfort
- 143 Before You Call for Technical Support
- 144 Helpful Hints
- 146 Solving General Problems
- 150 Solving Power Problems
- 152 Solving Diskette Problems
- 155 Solving Hard Drive Problems
- 158 Solving Media Card Reader Problems
- 160 Solving Display Problems
- 164 Solving Audio Problems
- 166 Solving Printer Problems
- 168 Solving Keyboard and Mouse Problems
- 170 Solving Hardware Installation Problems
- 171 Solving Network Problems
- 174 Solving Memory Problems
- 176 Solving Processor Problems
- 176 Solving CD-ROM and DVD Problems
- 179 Solving USB Flash Drive Problems
- 180 Solving Front Panel Component Problems
- 180 Solving Internet Access Problems
- 183 Solving Software Problems
- 184 Contacting Customer Support
- 185 POST Error Messages
- 186 POST Numeric Codes and Text Messages
- 194 Interpreting POST Diagnostic Front Panel LEDs and Audible Codes
- 198 Password Security and Resetting CMOS
- 199 Resetting the Password Jumper
- 200 Clearing and Resetting the CMOS
- 202 Backup and Recovery
- 202 Windows 7 – Backup and Recovery
- 202 Backing up your information
- 204 Performing a recovery
- 204 Using the Windows recovery tools
- 205 Using F11
- 205 Using a Windows 7 operating system DVD (purchased separately)
- 207 Battery Replacement
- 210 Removing and Replacing a Removable 3.5-inch SATA Hard Drive
- 215 Unlocking the Smart Cover Lock
- 215 Smart Cover FailSafe Key
- 216 Using the Smart Cover FailSafe Key to Remove the Smart Cover Lock
- 218 Power Cord Set Requirements
- 218 General Requirements
- 218 Japanese Power Cord Requirements
- 219 Country-Specific Requirements
- 220 Specifications
- 220 MT Specifications
- 222 SFF Specifications
- 223 Index