Illustrated Parts & Service Map
HP Compaq dx2300 and dx2308 Microtower
Business PC
© 2007 Hewlett-Packard Development Company, L.P. The information con-
tained herein is subject to change without notice. HP shall not be liable for
technical or editorial errors or omissions contained herein.
Document Number 443233-001. 1st Edition February 2007.
NOTE: The part numbers listed here may not be the most current
current spare parts listing.
Cables
1
1
1
2
*
*
*
*
SATA cable, 10-in. (use for HDD)
392307-001
391738-001
391740-001
392288-001
436328-001
416163-001
444656-001
339257-001
SATA cable, 13-in. (use for 2nd ODD)
SATA cable, 14-in. (use for 1st ODD)
Diskette drive cable
Front USB cable with mounting screw
Power switch with cable and switch mounting bracket
Second serial port cable
DMS 59 to Dual VGA adapter
*Not shown
Key Specifications
Processor Type:
Intel Celeron D, Intel Pentium 4, Intel Pentium D, and Intel
Core 2 Duo
RAM Type:
DDR PC2-5300 non-ECC
Maximum RAM Supported: 2 GB
Expansion Bus:
Graphics Adapter:
Hard drive interface:
I/O Interfaces:
PCI 2.3, PCI Express Gen 1
Integrated controller. PCI-Ex16 (max 75W).
SATA 3.0 Gb/s
Serial (1), parallel (1), USB 2.0 (6), RJ-45 (1), front audio
jacks (2), rear audio jacks (3), P/S2 (2), VGA (1), and serial (2
optional)
Spare Parts
Mass Storage Devices
1
2
*
*
*
*
3
*
*
*
Diskette drive, 3.5-inch, with mounting screws
48X SATA CD-ROM drive
392415-001
419635-001
419469-001
419496-001
419498-001
419497-001
440754-001
440499-001
440747-001
407187-001
52X SATA CD-ROM drive
16X SATA DVD-ROM drive
16X SATA DVD R/W drive
48/32 SATA DVD-ROM/CD-RW drive
80-GB\7200 RPM SATA hard drive, 3.0 Gb/s
160-GB\7200 RPM SATA hard drive, 3.0 Gb/s
250-GB\7200 RPM SATA hard drive, 3.0 Gb/s
Media card reader
*Not shown
Keyboards (not illustrated)
System Unit
PS/2, Basic
USB, Basic
382925-xxx
382926-xxx
1
*
2
3
4
*
Front bezel without bezel blank (dx2300)
Front bezel without bezel blank (dx2308 for China only)
438609-001
445366-001
440197-001
not spared
French Canadian
International
-121
-B31
-AD1
-161
PRC
-AA1
-AB1
-281
Access panel
Taiwanese
Thai
Chassis
Korean (Hanguel)
LA Spanish
Power supply, PFC, 250W
Power supply, non-PFC, 250W
441390-001
444813-001
U.S.
-001
*Not shown
dx2300, dx2308 Illustrated Parts & Service Map, MT Chassis
443233-001
page1
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System Board
Heading
Option / Description
Advanced
(continued)
Parallel Port
Mode
Allows you to select: SPP, EPP, ECP, ECP + EPP, or Normal.
After AC
Power Loss
Allows you to select power loss behavior to On, Off, or Last
state.
Wake on PCI Disable/enable
Device from
S5
RTC Alarm
Resume
Disable/enable
Date (of
Month)
If RTC Alarm is enabled, allows you to select day of month to
resumption (0 = every day).
Resume Time If RTC Alarm enabled, allows you to select time to resume.
(hh:mm:ss)
Boot
Device Boot
Disabling
Allows you to restrict a device from booting the unit. May
disable: none, USB, Internal ODD, Internal FDD, or
USB+ODD+FDD
F9 Boot Menu Disable/enable
Removable
Device Boot
Seq.
Allows you to specify the order of attached removable
devices. The first drive in the order has priority and is recog-
nized as drive A.
Hard Disk
Boot Seq.
Allows you to specify the order of attached hard drive devices
(USB HDD, USB2 Drive Key, or USB flash media). The first
attached drive in the order has priority and is recognized as
drive C.
Optical Drive Allows you to specify the order in which attached optical
Boot Seq.
drives (including USB ODD) are checked for a bootable oper-
ating system image.
System Board Connectors and Jumpers (position of some untitled components may
vary in location)
Network Boot Allows you to specify the order in which network devices
Seq.
(including UP NIC cards) are checked for a bootable operat-
ing system image.
ATX1
AUD1
Main 24-pin power
Front audio
JUSB2
PCI1
Media Card Reader
PCI
First, Second, Allows you to specify which devices will boot in which
Third, and
Fourth Boot
Device
sequence or to disable any of the four: removable, hard disk,
CD-ROM, network, or disabled.
BAT1_X1 Battery
PCI- E1
PCI E x16 card
CPU_FAN1 Heatsink fan
PCI E1X1 PCI-E x1 card
PCIE 1X2 PCI-E x1 card
SetSupervisor Allows you to establish a password to enter Computer Setup
Password
DIMM1
DIMM2
FDD1
Memory module
Memory module
Diskette drive
CMOS
PROC
SATA1
SATA2
Microprocessor
Set User Pass- Allows you to establish a password to enter the computer
word
(must have Supervisor password established)
Serial ATA, 1st hard drive
Security
Option
Allows you to set security option to Setup or System so that
the password is required each time the system boots or only
when entering Computer Setup.
JBAT1
Serial ATA, 1st ODD or 2nd
hard drive if no ODD
JCOM1
2nd serial port
SATA3
Serial ATA, 2nd hard drive if
ODD present
BIOS Write
Protection
Enable to prevent BIOS from being updated.
JFP1
Power switch/LED
Aux power (4-pin)
Front USB
SATA4
SPKR
Serial ATA, 2nd ODD
Speaker
PC Health
Status
System Fan
Fail Check
Disable/enable
JPW1
JUSB1
Smart Fan
Function
Disable/enable
SYS_FAN1 Chassis fan
Current CPU View only
Temperature
System Setup and Boot
Current Sys-
tem Temp
View only
Basic system information regarding system information, setup, power management, hardware,
and passwords is maintained in the Setup Utility held in the system ROM. The Setup Utility is
accessed by pressing the F10 key when prompted (on screen) to do so during the boot sequence.
If the screen prompt opportunity is missed, a restart will be necessary.
Current CPU View only
Fan Speed
Current Sys-
tem Fan
Speed
View only
Computer Setup Menu
Vcore
View only
Heading
Option / Description
12V
View only
System
Information
Lists the following main system specifications:
5V
View only
•
•
•
•
•
•
Product Name
SKU Number
Processor Type
Processor Speed
System ROM
Cache Size
•
•
•
•
•
Memory Size
Integrated MAC
UUID
System Serial #
Asset Tracking Number
VCC (V)
VBAT (V)
5VSB (V)
View only
View only
View only
Action
Choices
Save & Exit
Setup
Allows you to save current settings and exit Computer Setup.
Main
Date (mm/dd/ Allows you to set system date.
yyyy)
Exit Without
Saving
Allows you to exit Computer Setup without saving changes.
Allows you to reset Computer Setup to factory defaults.
Time (hh/mm/ Allows you to set system time.
ss)
Load Opti-
mized defaults
SATA Port 1, Allows you to run HDD self-tests, auto detect HDD size and
2, 3, and 4
head, set extended IDE drive details, set access mode, and
view information about the device(s)
Onboard FDC Disable/enable
Controller
Drive A
Halt On
Allows you to set to None or 1.4M, 3.5 in.
Allows you to set POST error behavior to: all errors, no
errors, all but keyboard, all but diskette, or all but diskette/
keyboard.
POST Delay
Allows you to set POST delay to 0, 5, 10, 15, or 30 seconds
Disable/enable hardware DEP function.
Advanced
Execute Dis-
able Bit
MAX DVMT Specify size of DVMT/system memory to allocate for video
Allocation
memory. Settings: 64MB, 128MB, 224 MB.
Init Display
First
Allows you to set primary display device to PCI slot, OnChip
VGA, or PCIEx.
Onboard HD
Audio
Disable/enable
OnChip USB Disable/enable
Controller
USB Legacy
Support
Disable/enable (USB keyboard, mouse, and flash media).
OnboardLAN Disable/enable
OnboardLAN Disable/enable
Boot ROM
Onboard
Serial Port 1
or 2
Allows you to select: Disabled, 3F8/IRQ4, 2F8/IRQ3, 3E8/
IRQ4, or 2E8/IRQ3.
Onboard Par- Allows you to select: Disabled, 378/IRQ7, 278/IRQ5, or
allel Port 3BC/IRQ7.
dx2300, dx2308 Illustrated Parts & Service Map, MT Chassis
443233-001
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Diagnostic Functions
Diagnostic functions are provided by the Setup Utility (in system ROM) and by Insight Diag-
nostics. Insight Diagnostics provides detailed system information including:
System Hardware Interrupts
IRQ System Function
IRQ System Function
•
•
•
•
•
Processor type and speed
0
1
2
3
4
5
6
7
Timer Interrupt
8
Real-Time Clock
Memory amount, mapping, and integrity
Hardware peripheral availability/settings
Hard drive type, space used/available
System identification, asset tracking
Keyboard
9
Unused
Interrupt Controller Cascade
Serial Port (COM B)
Serial Port (COM A)
Unused, available for PCI
Diskette Drive
10
11
12
13
14
15
Unused, available for PCI
Unused, available for PCI
Mouse
Insight Diagnostics may be found on the Documentation and Diagnostics CD that shipped with
the computer. The tool may also be downloaded from the hp Web site using the following pro-
cedure:
Coprocessor
Primary ATA (IDE) Controller
Secondary ATA (IDE) Controller
2. Click the Software and Download driver link.
3. Enter the product number (for example, dx2250) in the text box and press the Enter key.
4. Select the specific product.
Parallel Port (LPT 1)
Failsafe Boot Block ROM
5. Select the OS.
The computer comes with a reprogrammable flash system ROM (read only memory). To
upgrade the ROM, download the latest ROM BIOS image from the HP Web site (www.hp.com)
and follow the online GUI/instructions.
6. Click the Diagnostics link.
7. Select HP Insight Diagnostics Offline Edition.
8. Select the proper language and click Download.
Your system ROM includes a Failsafe Boot Block that is protected during the flash process and
allows the computer to be restarted in the unlikely event of an unsuccessful ROM flash.
If the system detects an invalid system ROM during the boot sequence, the Failsafe Boot Block
attempts to locate a valid BIOS image on removable media. To recover from the Boot Block
recovery mode complete the following steps:
Error Conditions and Messages
How It Is
Established
Feature
Purpose
Floppy drive controller Prevents the transfer of data to or from the
floppy drive.
Setup Utilities
Boot Block Recovery
1. Remove any bootable media from the computer and turn off power.
2. Insert a flash drive or CD containing the ROM BIOS.
3. Turn on power to the system.
Device Boot Disabling Prevents booting from and or all of these
devices: Internal or external USB, Internal
ODD, or Internal FDD.
Setup Utilities
Setup Utilities
Security Option
Prevents use of computer until password is
entered. Can apply to both initial startup and
restart.
4. The system will automatically flash the ROM. After a successful flash, the system will either
automatically restart or prompt the user to unplug the unit, wait 5 seconds, reattach the power
cord, and then press the power button.
BIOS Write Protect
USB Controller
Restricts ability to change ROM BIOS with- Setup Utilities.
out approval.
Password Security
Allows you to disable or enable all USB
devices.
Setup Utilities
Establishing a Supervisor Password:
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.
Diagnostic LEDs
2. As soon as the computer is turned on, press F10 when the monitor light turns green to enter
Computer Setup. Press Enter to bypass the title screen, if necessary. If you do not press F10
when prompted, a restart will be necessary.
LED
Color
Green
Green
Green
Green
LED Activity
State/Message
Computer on
Power
Power
Power
Power
On
3. Select Boot > Setup Supervisor Password and follow the instructions on the screen.
4. Before exiting, click File > Save and Exit Setup.
1 blink every 2 seconds
1 blink every second
Suspend to RAM (some models)
CPU thermal shutdown
Establishing a User Password:
5 blinks, 1 blink every second Pre-video memory error
followed by 1 short beep
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.
Power
Green
6 blinks, 1 blink every second Pre-video graphics error
followed by a 1 long and 2 short
beeps
2. As soon as the computer is turned on, press F10 when the monitor light turns green to enter
Computer Setup. Press Enter to bypass the title screen, if necessary. If you do not press F10
when prompted, a restart will be necessary.
Power
Power
Green
Green
8 blinks, 1 blink every second Invalid ROM based on Checksum with
3. Select Boot > Set User Password and follow the instructions on the screen.
Before exiting, click File > Save and Exit Setup.
followed by 2 short beeps
FDD installed
8 blinks, 1 blink every second Invalid ROM based on Checksum with-
followed by 2 short beeps and out FDD installed
hurried beeps
Changing a Password:
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.
none
none
System does not power on and System unable to power on
LEDs are not flashing
2. As soon as the computer is turned on, press F10 when the monitor light turns green to enter
Computer Setup.
3. When the key icon appears, type your current password.
Clearing CMOS
4. Select Boot > Set Supervisor (or user) Password.
1. Turn off the computer and any external devices, disconnect the power cord from the
power outlet, and remove the access panel.
5. Enter the new password (or nothing for no password) in the key icon and press Enter.
The new password will take effect the next time the computer is restarted.
2. Locate jumper JBAT1 and move the jumper from pins 2-3 to pins 1-2.
3. Leave the jumper on pins 1-2 for 5 seconds then, move the jumper back to pins 2-3.
4. Replace the access panel and connect the power cord to the power outlet.
5. Turn on the computer, allow it to start.
Deleting a Password
1. Turn on or restart the computer. If you are in Windows, click Start> Shut Down > Restart.
2. As soon as the computer is turned on, press F10 when the monitor light turns green to enter
Computer Setup.
3. When the key icon appears, type your current password.
4. Select Boot > Set Supervisor (or user) Password.
5. Enter nothing for no password in the key icon and press Enter.
The new password will take effect the next time the computer is restarted.
dx2300, dx2308 Illustrated Parts & Service Map, MT Chassis
443233-001
page4
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