Compaq 1000 5.11 Power Supply

Compaq Deskpro 1000 Series of Personal Computers 5-13

5.11 Power Supply

1. Perform preparation procedures (Section 5.4).

2. Remove the system unit cover (Section 5.5).

3. Remove the power connector cables from the system board.

4. Disconnect the power cables from the drives.

5. Remove four screws from the power supply on the rear of the chassis.

6. Remove one screw securing the power supply to the inside of the chassis.

7. Lift the power supply up until it hits the lip of the chassis.

8. Slide the power supply towards the front, and lift it out of the chassis.

Figure 5-12. Removing the Power Supply

To replace the power supply, reverse the previous procedure.

Contents

Main Notice Maintenance & Service Guide C preface chapter 1 Product Description chapter 2 Troubleshooting chapter 3 Illustrated Parts Catalog chapter 4 Removal and Replacement Preliminaries chapter 5 Removal and Replacement Procedures chapter 6 Jumper Information chapter 7 Utilities chapter 8 Specifications Page preface Symbols and Conventions ! Technician Note ! System Serial Number Locating Additional Information Page 1.1 Compaq Deskpro 1000 Series of Personal Computer Models Table 1-1 Desktop Models Compaq Deskpro 1000 Series of Personal Computers 1-3 1.2 Features Table 1-2 Features Item Description 1.3 System Design 1.3.1 Design Overview 1.4 Preloaded Software 1.5 Computer Features 1.5.1 Front Panel Controls and LEDs 1.5.2 Drive Positions 1.5.3 Rear Panel Connectors 1.6 Enhanced Keyboard chapter 2 T 2.1 Power-On Self Test (POST) 2.1.1 POST Error Messages 2-2 Troubleshooting Table 2-1 Power-On Self-Test Messages Message Probable Cause Recommended Action Table 2.1 Compaq Deskpro 1000 Series of Personal Computers 2-3 Message Probable Cause Recommended Action 2.2 CMOS Setup Utility 2.2.1 Preparing the Computer 2.3 Troubleshooting Without Diagnostics 2.3.1 Checklist for Solving Minor Problems 2.3.2 Power Problems Table 2-2 Solutions for Power Problems Compaq Deskpro 1000 Series of Personal Computers 2-7 2.3.3 Diskette Drive Problems This section identifies some quick checks for diskette driverelated problems. Table 2-3 Solutions for Diskette Drive Problems 2-8 Troubleshooting 2.3.4 Display Problems CONFIG.SYS This section identifies some quick checks for display-related problems. Table 2-4 Solutions for Display Problems Compaq Deskpro 1000 Series of Personal Computers 2-9 2.3.5 Printer Problems This section identifies some quick checks for printer-related problems. Table 2-5 Solutions for Printer Problems 2-10 Troubleshooting 2.3.6 Hard Drive Problems This section identifies some quick checks for hard driverelated problems. Table 2-6 Solutions for Hard Drive Problems Compaq Deskpro 1000 Series of Personal Computers 2-11 2.3.7 Hardware Installation Problems This section identifies some quick checks for hardware problems. Table 2-7 Solutions for Hardware Installation Problems Problem Possible Solutions 2-12 Troubleshooting ILLUSTRATED PARTS CATALOG 3.1 System Unit Table 3-1 System Unit Spare Parts 3.2 Mass Storage Devices 3.3 Cables Table 3-3 Cables 3.4 Standard and Optional Boards Table 3-4 Standard and Optional Boards 3-6 Illustrated Parts Catalog 3.5 Keyboards Figure 3-6. Keyboard Table 3-5 Keyboards Description Spare Part Number Warranty Tier 3.6 Miscellaneous Hardware Kit Table 3-6 Miscellaneous Hardware Kit 3.7 Miscellaneous Plastics Kit Table 3-7 Miscellaneous Plastics Kit 3.8 Miscellaneous Parts 3.9 Shipping Boxes 3.10 Documentation chapter 4 R EMOVAL AND R EPLACEMENT P 4.1 Electrostatic Discharge Information 4.1.1 Generating Static Table 4-1 Typical Electrostatic Voltages 4.1.2 Preventing Electrostatic Damage to Equipment 4.1.3 Personal Grounding Methods Table 4-2 Static Shielding Protection Levels 4.1.4 Grounding Workstations 4.1.5 Personal Grounding Equipment 4.1.6 Recommended Materials and Equipment 4.2 Service Considerations 4.2.1 Tools and Software Requirements 4.2.2 Screws 4.2.3 Cables and Connectors 4.2.4 Hard Drives R EMOVAL AND R EPLACEMENT P 5.1 Serial Number 5-2 Removal and Replacement Procedures 5.2 Disassembly/Assembly Sequence 5.3 Feet 5.4 Preparation for Disassembly 5.5 System Unit Cover 5.6 Expansion Board Page Page 5.8 System Board 5.9 Graphics Memory 5.10 Memory Modules Table 5-1 Memory Configuration Options 5.10.1 Installing a SIMM Module 5.10.2 Installing a DIMM Module 5.11 Power Supply 5.12 Microprocessor 5.12.1 Passive Heat Sink (P55C/166) ! Page 5.12.2 Active Heat Sink (P55C/200) ! Page 5.13 Front Bezel Assembly Page 5.15 LED Cables Table 5-2 LED Cables Page Page 5.18 Replacement Battery ! 5.19 Mass Storage Devices 5.19.1 Drive Positions 5.19.2 Drive Cage 5.19.3 3.5-Inch Drive 5.19.4 5.25-Inch Drive chapter 6 J UMPER I 6.1 System Board Jumpers ! 6-2 Jumper Information Figure 6-1. Locating the Jumpers Table 6-1 System Board Jumpers System Board ID Function Description 1 2 6.1.1 Power-On Password Jumpers (CPW) 6.1.2 Flash EPROM Type Selection (EP) 6.1.3 CPU External Clock (Bus) Frequency (CLK) 6.1.4 CPU to SRAM Data Transacting Mode Selection (SRAM) Table 6-4 SRAM Pin Pairs 6.1.5 Jumper Settings 6.2 Hard Drives 6.2.1 1.6-GB IDE Hard Drive Jumper Settings chapter 7 U 7.1 CMOS Setup Utility 7.1.1 Using the CMOS Setup Utility 7.1.2 Important CMOS Settings 7.1.3 Passwords 7.1.4 IDE HDD Auto Detection 7.1.5 Save and Exit Setup 7.1.6 Exit Without Saving 7.2 Upgrading the BIOS ! 7.3 Configuring Windows Display and Monitor 7.3.1 Supported Resolutions 7.3.2 Changing Monitor Type Manually in Windows 95 7.3.3 Setting Graphics Resolution S 8.1 System Table 8-1 System Specifications Metric U. S. 8-2 Specifications Table 8-2 System Interrupts Hardware IRQ System Function Table 8-3 System DMA Hardware DMA System Function Compaq Deskpro 1000 Series of Personal Computers 8-3 Table 8-4 System I/O I/O Address (Hex) * System Function (Shipping Configuration) Page Compaq Deskpro 1000 Series of Personal Computers 8-5 8.2 Drives Table 8-6 Diskette Drive 1.44 MB 8-6 Specifications Table 8-7 EIDE Hard Drive 1.6-GB Compaq Deskpro 1000 Series of Personal Computers 8-7 8.3 Mouse Table 8-8 2-Button Mouse Metric U.S. 8.4 Keyboard Table 8-9 Compaq Enhanced Keyboard 8.5 Supported Graphics Resolutions Compaq Deskpro 1000 Series of Personal Computers A-1 appendix A C ONNECTOR PIN A This appendix contains the pin assignments for all external connectors: Table A-1 Keyboard Table A-2 Mouse A-2 Connector Pin Assignments Table A-3 Parallel Interface Table A-4 Serial Interface Compaq Deskpro 1000 Series of Personal Computers A-3 Table A-5 VGA Monitor *For DDC support (I2C monitors) Table A-6 USB Connector A-4 Connector Pin Assignments Table A-7 IDE Drive Cable Pin Signal Pin Signal appendix B POWER CORD SET REQUIREMENTS General Requirements Country-Specific Requirements Power Cord Set RequirementsBy Country appendix C H ARD D Device 0/Device 1 Relationship Cable Select IntelliSafe - SMART Automatic Soft-Drive Types Table C-1 Soft-Drive Type Assignments Index A B C D I J K L M T U V W