Specifications
Table Of Contents
- Product Features
- Activating and Customizing the Software
- Computer Setup (F10) Utility
- Illustrated parts catalog
- Serial ATA (SATA) Drive Guidelines and Features
- Routine Care and Disassembly Preparation
- Removal and Replacement Procedures – Microtower (MT) Chassis
- Removal and Replacement Procedures – Small Form Factor (SFF) Chassis
- Troubleshooting Without Diagnostics
- Safety and Comfort
- Before You Call for Technical Support
- Helpful Hints
- Solving General Problems
- Solving Power Problems
- Solving Hard Drive Problems
- Solving Media Card Reader Problems
- Solving Display Problems
- Solving Audio Problems
- Solving Printer Problems
- Solving Keyboard and Mouse Problems
- Solving Hardware Installation Problems
- Solving Network Problems
- Solving Memory Problems
- Solving Processor Problems
- Solving CD-ROM and DVD Problems
- Solving USB Flash Drive Problems
- Solving Front Panel Component Problems
- Solving Internet Access Problems
- Solving Software Problems
- Contacting Customer Support
- HP PC Hardware Diagnostics
- Backup and Recovery
- Power Cord Set Requirements
- POST Error Messages
- Password Security and Resetting CMOS
- Specifications
- Index
Power Supply
Description Spare part number
Power supply, 300W 656721-001
Power supply, 300W, 85% efficient 575437-001
Power supply, 250W, PFC 508466-001
WARNING! Voltage is always present on the system board when the computer is plugged into an
active AC outlet. To avoid possible personal injury and damage to the equipment the power cord
should be disconnected from the computer and/or the AC outlet before opening the computer.
NOTE: When installing a new power supply, be sure to set the red switch to the setting (230 V or
115 V) appropriate for the country in which the computer is used. Spare power supplies normally
arrive set for 230 V.
1. Prepare the computer for disassembly (Preparation for Disassembly on page 48).
2. Remove the access panel (
Access Panel on page 49).
3. Lay the computer on its side with the rear facing toward you.
4. Disconnect all power cables from the mass storage devices and from the system board. The
following image points out power connectors in a system with one hard drive and one optical
drive. System configuration may vary.
Figure 7-47 Power supply connectors and cables
96 Chapter 7 Removal and Replacement Procedures – Microtower (MT) Chassis