Troubleshooting Guide
Page 20
When the computer is plugged into an AC power source, voltage is enabled. 2 short beeps followed by a three second pause CPU configuration error or invalid CPU 1. Reseat the graphics card. For systems with integrated graphics, replace the system board. 3 short beeps and 1 long beep followed by a three second pause No floppy ...
When the computer is plugged into an AC power source, voltage is enabled. 2 short beeps followed by a three second pause CPU configuration error or invalid CPU 1. Reseat the graphics card. For systems with integrated graphics, replace the system board. 3 short beeps and 1 long beep followed by a three second pause No floppy ...
HP Compaq dx2400 Microtower Business PC: Illustrated Parts & Service Map
Page 2
...video card with DMS-59 and TV (S-Video) outputs, LP 445743-001 DVI, SDVO graphics card, FH 398333-001 HP FireWire IEEE 1394 PCI card, 2 external, 1 internal port, FH 441448-001 Intel Pro 1000 PT Gigabit PCIe NIC,... Double stack USB SPEAKER Internal speaker PCI 1 PCI slot 1 VGA VGA connector PCIE_X1_1 PCIe X1, slot 1 CPU_FAN CPU fan PCIE_X1_2 PCIe X1, slot 2 SYS_FAN1 System fan PCIE X16 PCIe X16 slot CMOS+PW Clear CMOS KB+MS ...USB FLOPPY Diskette drive F_USB2 Media card reader F_AUDIO Front audio ATX_CPU CPU power dx2400 Illustrated Parts & Service Map 484985-001 page 2
...video card with DMS-59 and TV (S-Video) outputs, LP 445743-001 DVI, SDVO graphics card, FH 398333-001 HP FireWire IEEE 1394 PCI card, 2 external, 1 internal port, FH 441448-001 Intel Pro 1000 PT Gigabit PCIe NIC,... Double stack USB SPEAKER Internal speaker PCI 1 PCI slot 1 VGA VGA connector PCIE_X1_1 PCIe X1, slot 1 CPU_FAN CPU fan PCIE_X1_2 PCIe X1, slot 2 SYS_FAN1 System fan PCIE X16 PCIe X16 slot CMOS+PW Clear CMOS KB+MS ...USB FLOPPY Diskette drive F_USB2 Media card reader F_AUDIO Front audio ATX_CPU CPU power dx2400 Illustrated Parts & Service Map 484985-001 page 2
HP Compaq dx2400 Microtower Business PC: Illustrated Parts & Service Map
Page 3
... Power Failure Stay off the computer and any external devices, and disconnect the power cord from the HP Web site as the computer is turned on or restart the computer. CPU Speed View only. Disable/enable the SATA2 controller. Press Enter to bypass the title screen. 3. ... extended self test. If you to set video memory size to change the user password. Press Enter. Move the jumper cap on pins 4-6 for example, dx2400) in Windows, click Start > Shut Down > Restart. 2. Floppy Dis- Onboard 1 MB, 8 MB. DVMT/Fixed Allows you are in Windows, click Start ...
... Power Failure Stay off the computer and any external devices, and disconnect the power cord from the HP Web site as the computer is turned on or restart the computer. CPU Speed View only. Disable/enable the SATA2 controller. Press Enter to bypass the title screen. 3. ... extended self test. If you to set video memory size to change the user password. Press Enter. Move the jumper cap on pins 4-6 for example, dx2400) in Windows, click Start > Shut Down > Restart. 2. Floppy Dis- Onboard 1 MB, 8 MB. DVMT/Fixed Allows you are in Windows, click Start ...
Service Reference Guide: HP Compaq dx2400 Business PC
Page 5
... (IDE) Standard Drive Cable 74 CD-ROM 50-Pin Connector ...75 24-Pin Power ...75 24-Pin MicroFit Power ...76 4-Pin Power (for CPU) ...76 6-Pin Power (for CPU) ...76 SATA Data and Power ...77 PCI Express ...77 PCI Express ...78 PCI Express Mini Card ...79 DVI Connector ...80 Appendix B Power Cord...
... (IDE) Standard Drive Cable 74 CD-ROM 50-Pin Connector ...75 24-Pin Power ...75 24-Pin MicroFit Power ...76 4-Pin Power (for CPU) ...76 6-Pin Power (for CPU) ...76 SATA Data and Power ...77 PCI Express ...77 PCI Express ...78 PCI Express Mini Card ...79 DVI Connector ...80 Appendix B Power Cord...
Service Reference Guide: HP Compaq dx2400 Business PC
Page 11
Table 2-2 Computer Setup-Advanced Option Description CPU Type (view only) CPU Speed (view only) Cache RAM (view only) Primary Video Adapter Allows you to select the boot display device when more than 2 video options are offered ...
Table 2-2 Computer Setup-Advanced Option Description CPU Type (view only) CPU Speed (view only) Cache RAM (view only) Primary Video Adapter Allows you to select the boot display device when more than 2 video options are offered ...
Service Reference Guide: HP Compaq dx2400 Business PC
Page 14
This does not include updates to their default values (including options for ctrl+F10), you must enter F10 Setup mode and press F5. Recovering the Configuration Settings To reset all BIOS Setup options to system date, system time, supervisor password, user password, and CPU frequency multiplier. 8 Chapter 2 Computer Setup (F10) Utility
This does not include updates to their default values (including options for ctrl+F10), you must enter F10 Setup mode and press F5. Recovering the Configuration Settings To reset all BIOS Setup options to system date, system time, supervisor password, user password, and CPU frequency multiplier. 8 Chapter 2 Computer Setup (F10) Utility
Service Reference Guide: HP Compaq dx2400 Business PC
Page 30
... static electricity. Apply only the tension required to their proper locations. Improper cable placement can damage the unit. HP strongly recommends that the cables are flat, flexible cables. CAUTION: As each subassembly is used throughout the unit are...HP tamper- If an incorrect screw is removed from the connector. CAUTION: When servicing this computer, ensure that they are actually mounted in standby mode. ● Before handling a drive, ensure that have a black finish. resistant bits (Smart Cover FailSafe Key, PN 166527-002) Screws The screws used on or in the CPU...
... static electricity. Apply only the tension required to their proper locations. Improper cable placement can damage the unit. HP strongly recommends that the cables are flat, flexible cables. CAUTION: As each subassembly is used throughout the unit are...HP tamper- If an incorrect screw is removed from the connector. CAUTION: When servicing this computer, ensure that they are actually mounted in standby mode. ● Before handling a drive, ensure that have a black finish. resistant bits (Smart Cover FailSafe Key, PN 166527-002) Screws The screws used on or in the CPU...
Service Reference Guide: HP Compaq dx2400 Business PC
Page 66
... shaft to them may require replacing the system board. 5. To remove the fan, pull back on the processor. Remove the heatsink from the system board (CPU FAN). 4. CAUTION: Heatsink retaining screws should be removed in an X) to them may require replacing the system board. 60 Chapter 6 Removal and Replacement Procedures Microtower...
... shaft to them may require replacing the system board. 5. To remove the fan, pull back on the processor. Remove the heatsink from the system board (CPU FAN). 4. CAUTION: Heatsink retaining screws should be removed in an X) to them may require replacing the system board. 60 Chapter 6 Removal and Replacement Procedures Microtower...
Service Reference Guide: HP Compaq dx2400 Business PC
Page 82
24-Pin MicroFit Power Connector 24 13 12 Pin Signal 1 +5 Vaux 2 GND 3 +5V 4 +5V 5 PS_ON 6 GND 1 Pin Signal 7 PWRGD 8 +3.3V 9 +3.3V 10 Tach 11 GND 12 Fan-CMD Front Pin Signal 13 +12V 14 +5V Sense 15 GND 16 +5V 17 +5V 18 +3.3V Pin Signal 19 GND 20 +3.3V 21 Sense 22 +3.3V 23 +3.3V 24 GND 4-Pin Power (for CPU) Connector and Icon Pin Signal 1 GND 2 GND 3 +12V CPU 4 -12V CPU 6-Pin Power (for CPU) Connector and Icon 4 6 Pin Signal 1 GND 2 GND 3 GND 4 12V CPU 5 12V CPU 6 +12V 76 Appendix A Connector Pin Assignments
24-Pin MicroFit Power Connector 24 13 12 Pin Signal 1 +5 Vaux 2 GND 3 +5V 4 +5V 5 PS_ON 6 GND 1 Pin Signal 7 PWRGD 8 +3.3V 9 +3.3V 10 Tach 11 GND 12 Fan-CMD Front Pin Signal 13 +12V 14 +5V Sense 15 GND 16 +5V 17 +5V 18 +3.3V Pin Signal 19 GND 20 +3.3V 21 Sense 22 +3.3V 23 +3.3V 24 GND 4-Pin Power (for CPU) Connector and Icon Pin Signal 1 GND 2 GND 3 +12V CPU 4 -12V CPU 6-Pin Power (for CPU) Connector and Icon 4 6 Pin Signal 1 GND 2 GND 3 GND 4 12V CPU 5 12V CPU 6 +12V 76 Appendix A Connector Pin Assignments
Service Reference Guide: HP Compaq dx2400 Business PC
Page 96
... error code or text message associated with integrated graphics, replace the system board. 3 short beeps and 1 long beep followed by a three second pause CPU configuration error or invalid CPU 1. Check cable connections. 2. WARNING! Beeps Meaning Recommended Action 1 short beep and 1 long beep followed by a three second pause BIOS recovery was recently added...
... error code or text message associated with integrated graphics, replace the system board. 3 short beeps and 1 long beep followed by a three second pause CPU configuration error or invalid CPU 1. Check cable connections. 2. WARNING! Beeps Meaning Recommended Action 1 short beep and 1 long beep followed by a three second pause BIOS recovery was recently added...
Service Reference Guide: HP Compaq dx2400 Business PC
Page 100
... 12V header P5 Main Power/HDD LED connector P6 Speaker connector P7 Analog audio connector (from CD-ROM) P8 Primary chassis fan header or primary CPU heatsink fan P9 Secondary chassis fan header P10 Diskette drive connector P11 Auxiliary Audio connector P12 Alert on LAN connector P13 VRM module footprint P15...
... 12V header P5 Main Power/HDD LED connector P6 Speaker connector P7 Analog audio connector (from CD-ROM) P8 Primary chassis fan header or primary CPU heatsink fan P9 Secondary chassis fan header P10 Diskette drive connector P11 Auxiliary Audio connector P12 Alert on LAN connector P13 VRM module footprint P15...
Service Reference Guide: HP Compaq dx2400 Business PC
Page 101
... connector Fifth Serial ATA (SATA) connector Sixth Serial ATA (SATA) connector Seventh Serial ATA (SATA) connector Eighth Serial ATA (SATA) connector Primary (CPU) fan header for fansink Secondary CPU fan header for fansink Primary Serial Attached SCSI (SAS) connector Second Serial Attached SCSI (SAS) connector Third Serial Attached SCSI (SAS) connector Fourth...
... connector Fifth Serial ATA (SATA) connector Sixth Serial ATA (SATA) connector Seventh Serial ATA (SATA) connector Eighth Serial ATA (SATA) connector Primary (CPU) fan header for fansink Secondary CPU fan header for fansink Primary Serial Attached SCSI (SAS) connector Second Serial Attached SCSI (SAS) connector Third Serial Attached SCSI (SAS) connector Fourth...
Computer Setup (F10) Utility Guide
Page 9
... on this menu to set: ● Disabled ● Enabled ● Auto Detect ENWW Computer Setup (F10) Utilities 3 Table 2 Computer Setup-Advanced Option Description CPU Type (view only) CPU Speed (view only) Cache RAM (view only) Primary Video Adapter Allows you to select the boot display device when more than 2 video options are...
... on this menu to set: ● Disabled ● Enabled ● Auto Detect ENWW Computer Setup (F10) Utilities 3 Table 2 Computer Setup-Advanced Option Description CPU Type (view only) CPU Speed (view only) Cache RAM (view only) Primary Video Adapter Allows you to select the boot display device when more than 2 video options are...
Computer Setup (F10) Utility Guide
Page 12
This does not include updates to their default values (including options for Ctrl+F10), you must enter F10 Setup mode and press F5. Recovering the Configuration Settings To reset all BIOS Setup options to system date, system time, supervisor password, user password, and CPU frequency multiplier. 6 Computer Setup (F10) Utility ENWW
This does not include updates to their default values (including options for Ctrl+F10), you must enter F10 Setup mode and press F5. Recovering the Configuration Settings To reset all BIOS Setup options to system date, system time, supervisor password, user password, and CPU frequency multiplier. 6 Computer Setup (F10) Utility ENWW