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Service Reference Guide, dx2000 uT 359782-002 6–1
6
Removal and Replacement Procedures—
Microtower (µT) Chassis
Adherence to the procedures and precautions described in this chapter is essential for proper
service. After completing all necessary removal and replacement procedures, run the Diagnostics
utility to verify that all components operate properly.
✎
Not all features listed in this guide are available on all computers.
6.1 Preparation for Disassembly
See Chapter 5, “Identifying the Chassis, Routine Care, and Disassembly Preparation,” for initial
procedures.
1. Close any open software applications.
2. Exit the operating system.
3. Remove any diskette or compact disc from the computer.
4. Turn off the computer and any peripheral devices that are connected to it.
Ä
CAUTION: Turn off the computer before disconnecting any cables.
Ä
CAUTION: Regardless of the power-on state, voltage is always present on the system board as long as
the system is plugged into an active AC outlet. In some systems the cooling fan is on even when the
computer is in the “Standby,” or “Suspend” modes. The power cord should always be disconnected
before servicing a unit.
5. Disconnect the power cord from the electrical outlet and then from the computer.
6. Disconnect all peripheral device cables from the computer.
✎
During disassembly, label each cable as you remove it, noting its position and routing. Keep all
screws with the units removed.
Ä
CAUTION: The screws used in the computer are of different thread sizes and lengths; using the wrong
screw in an application may damage the unit.
- Personal Computers 1
- 2st Edition 1
- Service Reference Guide 3
- Contents 5
- 1.1 Microsoft Windows XP 9
- 1.2 Converting to NTFS 10
- 1.3 HP Software 10
- 2.1 Power-On Self-Test (POST) 11
- 2.2 Computer Setup Utilities 12
- 2.2.2 Computer Setup Menu 14
- 2.4 Restoring the Software 18
- 2.3 Protecting the Software 18
- Desktop Management 19
- 3.2.1 FailSafe Boot Block ROM 20
- 3.2.2 Dual-State Power Button 20
- 3.2.3 Power Management 21
- 3.2.4 World Wide Web Site 21
- 3.3 Security 22
- Entering a Power-On Password 23
- Entering a Setup Password 23
- Clearing Passwords 25
- 4.1 Ultra ATA Jumpers 27
- 4.2 Ultra ATA Cables 27
- Single-Drive Cable 28
- Two-Drive Cable 28
- 4.3.1 Device Classes 29
- 4.4 SMART 32
- 4.5 Drive Capacities 33
- Disassembly Preparation 35
- 5.2.1 Generating Static 36
- 5.2.4 Grounding the Work Area 37
- 5.3 Routine Care 38
- 5.3.3 Cleaning the Keyboard 39
- 5.3.4 Cleaning the Monitor 39
- 5.3.5 Cleaning the Mouse 39
- 5.4 Service Considerations 40
- 5.4.4 Cables and Connectors 41
- 5.4.5 Hard Drives 41
- Microtower (µT) Chassis 43
- 6.2 Access Panel 44
- 6.3 Front Bezel 45
- 6.4 Front Drive Bezels 46
- 6.4.2 Diskette Drive Bezel 47
- 6.5 Memory 48
- 6.6 Expansion Card 50
- 6.7 Drives 51
- 6.8 Front USB Device 56
- 6.9 Power Switch Assembly 57
- 6.10 Speaker 58
- 6.11 System Fan 59
- 6.12 Processor and Heatsink 60
- 6.13 System Board 61
- 6.14 Battery 62
- 6.15 Power Supply 64
- Connector Pin Assignments 65
- Parallel Interface 66
- Microphone 66
- Headphone 67
- Line-In Audio 67
- Line-Out Audio 67
- 20-Pin Power 68
- 4-Pin Power (for CPU) 68
- Power Cord Set Requirements 69
- Country-Specific Requirements 70
- POST Error Messages 71
- Preliminary Checklist 75
- Solving Minor Problems 76
- Solving Power Supply Problems 78
- Solving Diskette Problems 79
- Solving Hard Drive Problems 80
- Solving Display Problems 83
- Solving Audio Problems 86
- Solving Printer Problems 88
- Solving Keyboard Problems 89
- Solving Network Problems 92
- Solving Memory Problems 94
- Solving Processor Problems 95
- Solving Drive Key Problems 97
- DIMM Sockets 102
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