Hp Compaq Dc7800 Ultra Slim Desktop Pc Service And Maintain

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dc7800 Illustrated Parts & Service Map, USDT Chassis 459787-001 page 1

Illustrated Parts & Service Map

HP Compaq dc7800 Ultra Slim Desktop

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. Intel, Pentium,

Intel Inside, and the Intel logo are trademarks or registered trademarks of the

Intel Corporation and its subsidiaries in the U. S. and other countries.

Document Number 459787-001. 1st Edition September 2007.

Key Specifications

Spare Parts

Processor Type Intel Core 2 Duo, Pentium dual-core, Celeron

RAM Type DDR2-SODIMMs, PC2 6400 (800 MHz) non-ECC

Maximum RAM Supported 4 GB

Expansion Slots PCI Express Mini Card

Graphics Adapter Intel GMA 3100 integrated

Drive Support • 1 SATA mobile 2.5-inch

• 1 PATA Slimline optical

I/O Interfaces USB 2.0 (8), RJ-45 (1), front and rear audio jacks (2 each),

PS/2 ports (2), VGA/DVI-D connector, USB header on system

board

System Unit

1 Front bezel 451388-001

2 Access panel 451387-001

3 Chassis not spared

4 Stand 451396-001

5 Bezel blank 451394-001

6 AC adapter, 135W 437796-001

* Not shown

Cable and accessory

1 Optical drive cable/connector 451393-001

2 Cable cover 451397-001

Keyboards (not illustrated)

PS/2, Basic

USB, Basic

USB SmartCard

435302-xxx

435382-xxx

435385-xxx

Arabic -171 Korean (Hangul)

-KD1

Belgian -181 LA Spanish -161

BHCSY -B41 Norwegian -091

Brazilian Portuguese -201 PRC

-AA1

Czech -221 Portuguese -131

Danish -081 Romanian* -271

Finnish -351 Russian -251

French -051 Slovakian -231

French Arabic -DE1 Spanish -071

French Canadian -121 Swedish -101

German -041 Swiss -111

Greek -151 Taiwanese -AB1

Hebrew -BB1 Thai -281

Hungarian -211 Turkish -141

International -B31 U.S. -001

Italian -061 U.K. -031

Japanese -291

*not for 435385-xxx

Mass Storage Devices (not illustrated)

16X DVD±RW and CD-RW drive with LightScribe 417182-001

16X DVD-ROM drive 417185-001

24X CD-RW/DVD-ROM combo drive 417184-001

160 GB, 7200 RPM SATA hard drive, 8-MB cache 456574-001

80 GB, 7200 RPM SATA hard drive, 8-MB cache 456573-001

80 GB, 5400 RPM SATA hard drive, 8-MB cache 449981-001

Modem RJ-11 adapters (not illustrated)

Austrian 417561-011 Italian 316904-065

Belgian 316904-181 Netherlands 316920-335

Czechoslovakian 234963-221 Polish 316904-241

French 316904-051 Saudi Arabian 316904-AR1

German 316904-045 Scandinavian 382848-DH1

Greek 316904-151 Swiss 417562-111

Hungarian 234963-215 Turkish 316904-141

Israel 316904-BB1 United Kingdom 158593-035

dc7800 Illustrated Parts & Service Map, USDT Chassis 459787-001 page 2

Standard and Optional Boards

Memory modules (SODIMM)

1 2 GB, PC2-6400 CL6 451400-001

1 1 GB, PC2-6400 CL6 451398-001

1 512 GB, PC2-6400 CL6 451399-001

1 2 GB, PC2-5300 445936-001

1 1 GB, PC2-5300 445935-001

1 512 GB, PC2-5300 445934-001

Wireless cards (include card, antenna, cable, and screw)

2 WLAN adapter kit for use in the United States 455756-001

* WLAN adapter kit for use in the rest of the world 455756-002

* WLAN adapter kit for use in Japan 455756-291

System boards with thermal grease, alcohol pad, and CPU socket cover

3 System board 437794-001

* System board, excludes ES/CS 451384-001

Intel Celeron Processors with alcohol pad and thermal grease

* 440, 512-KB cache, 2.0 GHz 449166-001

* 430, 512-KB cache, 1.8 GHz 449165-001

* 420, 512-KB cache, 1.8 GHz 449164-001

Intel Pentium Dual Core Processors with alcohol pad and thermal grease

* E2180, 1-MB cache, 2.0 GHz 457656-001

* E2160, 1-MB cache, 1.8 GHz 457622-001

Intel Core 2 Duo Processors with alcohol pad and thermal grease

* E6850, 4-MB cache, 3.00 GHz 450792-001

* E6750, 4-MB cache, 2.66 GHz 450791-001

* E6550, 4-MB cache, 2.33 GHz 450694-001

* E4500, 2-MB cache, 2.2 GHz 449452-001

* E4400, 2-MB cache, 2.00 GHz 449451-001

Misc boards

* ReadyBoost module, 1 GB 455971-001

* Not shown

Miscellaneous Parts

1 Hard drive bracket 451389-001

2 Optical drive bracket 451390-001

3 Front I/O panel bracket 451391-001

4 Fansink with alcohol pad and factory-applied thermal grease 451395-001

5 Fan duct 451392-001

6 Chassis fan 451385-001

* Mouse, PS2, optical 417966-001

* Mouse, optical 390938-001

* Battery, real-time clock 153099-001

* Internal speaker 447085-001

* Rubber feet, snap in 451386-001

* Hood sensor 394064-001

*Not shown

dc7800 Illustrated Parts & Service Map, USDT Chassis 459787-001 page 3

System Board

System Setup and Boot

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.

System Board Connectors and Jumpers (position of some untitled

components may vary in location)

E49 Password P125 Hood sensor

J10 Quad stacked USB P150

Media reader/ReadyBoost connector

J68

Stacked keyboard/mouse connector

P21 Secondary IDE connector

J69 Video connector P6 Internal speaker

J70 Primary single USB port P60 SATA0

J71 Secondary single USB port P8 CPU fan

J72 Microphone jack P9 Chassis fan

J75 Headphone jack SW50 Clear CMOS

J78 Double stacked line-out/line-in SW1 System front power button

J100 DVI connector XBT1 Real-time-clock battery

J103 DC power input XMM1 DIMM 1

J105 PCIe Mini Card XMM3 DIMM 3

J9 Stacked RJ-45/Dual USB XU1 Processor

Computer Setup Menu

Heading Option/Description

File System Information - Lists the following main system specifications:

• Product name

• SKU number (some models)

• Processor type/speed/stepping

• Cache Size (L1/L2)

• Memory size/speed/ no. channels

• Integrated MAC Address

• System BIOS

• Chassis serial number

• Asset tracking number

About - Displays copyright notice.

Set Time and Date - Allows you to set system time and date.

Flash System ROM - Allows you to select a drive containing a new BIOS.

Replicated Setup - Save to Removable Media and Restore from Removable

Media

Default Setup

• Save Current Settings as Default

• Restore Factory Settings as Default

Apply Defaults and Exit - Applies the selected default settings and clears

any established passwords.

Ignore Changes and Exit - Exits Computer setup without applying or sav-

ing any changes.

Save Changes and Exit - Saves changes to system configuration or default

settings and exits Computer Setup.

Storage Device Configuration - Lists all installed BIOS-controlled storage devices.

The following options are available:

• Diskette Type(Legacy Diskettes only)-3.5” 1.44 MB and 5.25” 1.2 MB

• Drive Emulation

• Emulation Type - ATAPI Zip drive, hard disk, legacy diskette, CD-

ROM drive, and ATAPI LS-120 drive

• Multisector Transfers

• Translation Mode

• Translation Parameters

• SATA Default Values

Storage Options

• Removable Media Boot

• Legacy Diskette Write

DPS Self-Test - Allows you to execute self-tests on ATA hard drives.

Boot Order - Allows you to specify boot order.

• Shortcut to Temporarily Override Boot Order

Computer Setup Menu (Continued)

Heading Option / Description

Security Setup Password - Allows you to set and enable the setup (Administrator)

password.

Power-On Password - Allows you to set and enable power-on password.

Password Options - When any password exists allows you to lock legacy

resources, enable/disable network server mode, specify password require-

ment for warm boot, and allows you to enable/disable Setup Browse Mode.

Smart Cover (some models) - Allows you to lock/unlock cover lock and set

status of cover removal sensor.

Device Security (some models) - Enables/disables all I/O ports, audio, net-

work controllers, SMBus controller, and embedded security devices.

Network Service Boot - Enables/disables boot from OS on a server.

System IDs - Allows you to set Asset tag, ownership tag, Chassis serial

number, UUID, and keyboard locale setting.

DriveLock Security - Allows you to assign/modify a hard drive password

for added security.

System Security (some models) - Allows you to enable/disable:

• Data Execution Prevention

• Virtualization Technology

• Virtualization Technology Directed I/O

• Trusted Execution Technology

• Embedded Security Device Support

• OS management of Embedded Security Device through OS

• Virtual Appliance options

• Smart Card BIOS Password Support

Setup Security Level - Provides method to allow users limited access to

change specified setup options without knowing Setup password.

Power OS Power Management - Allows you to enable/disable Runtime Power

Management, Idle Power Savings, ACPI S3 Hard Disk Reset, ACPI S3 PS2

Mouse Wakeup, USB Wake on Device Insertion (some models), Unique

Sleep State Blink Rates.

Hardware Power Management - Allows you to enable/disable SATA bus

power management.

Thermal - Allows you to control minimum permitted fan idle speed.

Advanced Power-On Options - Allows you to set:

• POST mode - QuickBoot, FullBoot, or FullBoot every 1-30 days.

• POST messages - Enable/disable

• MEBx Setup prompt - Enable/disable or hidden/displayed

• F9 prompt - Enable/disable

• F10 prompt - Enable/disable

• F12 prompt - Enable/disable

• Factory Recovery Boot Support - Enable/disable

• Option ROM prompt - Enable/disable

• WOL After Power Loss - Enable/disable

• Remote wakeup boot source - Remote server/local hard drive

• After Power Loss - Off/on/previous state

• POST delay - None, 5, 10, 15, or 20 seconds

• Limit CPUID

Execute Memory Test (some models) -Restarts computer and executes

POST memory test.

BIOS Power-On - Allows you to set the computer to turn on at a preset

time.

Onboard Devices - Allows you to set resources or disable onboard system

devices.

PCI Devices - Lists installed PCI devices with their IRQ settings and

allows you to reconfigure IRQ or disable devices.

PCI VGA Configuration - Allows you to specify which VGA controller

will be used when multiple video adapters are available.

Bus Options (some models) - Allows you to enable/disable PCI SERR#

Generation and PCI VGA palette snooping.

Device Options - Allows you to set:

• Printer Mode - Bi-Directional, EPP & ECP, Output Only

• Num Lock state at power-on - off/on

• S5 Wake on LAN - enable/disable

• Processor cache - enable/disable

• Integrated video - enable/disable

• Multi-Processor - enable/disable

• Internal speaker - enable/disable

• Monitor Tracking - enable/disable

• NIC PXE Option ROM Download - enable/disable

System Hardware Interrupts

IRQ System Function IRQ System Function

0 Timer Interrupt 8 Real-Time Clock

1 Keyboard 9 Unused

2 Interrupt Controller Cascade 10 Unused, available for PCI

3 Serial Port (COM B) 11 Unused, available for PCI

4 Serial Port (COM A) 12 Mouse

5 Unused, available for PCI 13 Coprocessor

6 Diskette Drive 14 Primary ATA (IDE) Controller

7 Parallel Port (LPT 1) 15 Secondary ATA (IDE) Controller

dc7800 Illustrated Parts & Service Map, USDT Chassis 459787-001 page 4

Failsafe Boot Block ROM

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.

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:

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 in the root directory. The media must be

formatted using the FAT12, FAT16, or FAT32 file system.

3. Turn on power to the system.

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.

NOTE: BitLocker prevents Windows Vista from booting when a CD containing the BIOS image

file is in an optical drive. If BitLocker is enabled, remove this CD before attempting to boot to

Windows Vista.

Password Security

Establishing a Setup 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. Press Enter to bypass the title screen, if necessary. If you do not press F10

when prompted, a restart will be necessary.

3. Select Security > Setup Password and follow the instructions on the screen.

4. Before exiting, click File > Save Changes and Exit.

Changing a password:

1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.

To change the Setup password, go to step 2.

To change the Power-on password, go to step 3.

2. To change the Setup password, 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.

3. When the key icon appears, type your current password, a slash (/) or alternate delimiter

character, your new password, another slash (/) or alternate delimiter character, and your new

password again as shown:

current password/new password/new password.

NOTE: Type the new password carefully since the characters do not appear on the screen.

4. Press Enter.

The new password will take effect the next time the computer is restarted.

Deleting a password

1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.

To delete the Setup password, go to step 2.

To delete the Power-On password, go to step 3.

2. To change the Setup password, 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.

3. When the key icon appears, type your current password followed by a slash (/) or alternate

delimiter character as shown. Example: currentpassword/

4. Press Enter.

Security Features

NOTE: For more information about Setup Utilities refer to the Computer Setup Menu on the

previous page or in the Service Reference Guide.

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:

• Processor type and speed

• Memory amount, mapping, and integrity

• Hardware peripheral availability/settings

• Hard drive type, space used/available

• System identification, asset tracking

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:

1. Go to www.hp.com

2. Click the Software & Download driver link.

3. Enter the product number (for example, dc7800) in the text box and press the Enter key.

4. Select the specific product.

5. Select the OS.

6. Click the Diagnostics link.

7. Select HP Insight Diagnostics Offline Edition.

8. Select the proper language and click Download.

NOTE: The download includes instructions on how to create a bootable CD.

Clearing CMOS

1. Turn off the computer and any external devices, and disconnect the power cord from the

power outlet.

2. Remove the chassis access panel.

3. On the system board, press and hold the CMOS button for 5 seconds.

4. Replace the chassis access panel and reconnect the power cord.

5. Turn on the computer and allow it to start.

Error Conditions and Messages

Feature Purpose

How It Is

Established

Floppy drive controller Prevents the transfer of data to or from the

floppy drive.

Setup Utilities

Device Boot Disabling Prevents booting from and or all of these

devices: Internal or external USB, Internal

ODD, or Internal FDD

Setup Utilities

Security Option Prevents use of computer until password is

entered. Can apply to both initial startup and

restart.

Setup Utilities

BIOS Write Protect Restricts ability to change ROM BIOS with-

out approval.

Setup Utilities.

USB Controller Allows you to disable or enable all USB

devices.

Setup Utilities

Diagnostic LEDs

LED Color LED Activity State/Message

Power Green On Computer on

Power Green 1 blink every 2 seconds Normal Suspend Mode

Power Red 1 blink every second followed

by a 2 second pause

CPU thermal shutdown

Power Red 3 blinks, 1 blink every second

followed by a 2 second pause

Processor not installed

Power Red 4 blinks, 1 blink every second

followed by a 2 second pause

Power failure (power supply overload)

OR on USDT the wrong external

power supply is being used.

Power Red 5 blinks, 1 blink every second

followed by a 2 second pause

Pre-video memory error

Power Red 6 blinks, 1 blink every second

followed by a 2 second pause

Pre-video graphics error

Power Red 7 blinks, 1 blink every second

followed by a 2 second pause

System board failure (ROM

Power Red 8 blinks, 1 blink every second

followed by a 2 second pause

Invalid ROM based on Checksum

Power Red 9 blinks, 1 blink every second

followed by a 2 second pause

System powers on but is unable to boot

Power Red 10 blinks, 1 blink every second

followed by a 2 second pause

Bad option card

Power Red 11 blinks, 1 blink every second

followed by a 2 second pause

The current processor does not support

a feature previously enabled on this

system.

none none System does not power on and

LEDs are not flashing

System unable to power on

Common POST Error Messages

Screen Message Probable Cause Recommended Action

101-Option ROM Error 1. System ROM checksum

error.

2. Expansion board option

ROM checksum

3. System board

1. Verify ROM, reflash if required

2. Remove suspected card, reboot

3. Clear CMOS memory, reboot

4. Replace system board

103-System Board

Failure

DMA, timers 1. Clear CMOS memory.

2. Remove expansion boards.

3. Replace system board.

164-Memory Size Error

and

201-Memory Error

Incorrect memory configu-

ration

1. Run Setup (F10).

2. Check DIMMs for proper

seating, type, and HP

compatibility.

3. Remove DIMMs singularly and

reboot to isolate faulty DIMM.

4. Replace system board.

214-DIMM Configura-

tion Warning

Populated DIMM configura-

tion is not optimized

Rearrange the DIMMs so that

each channel has the same amount

of memory.

301-, 304-Keyboard error Keyboard failure. Check keyboard connection or

keys. Check connector for bent of

missing pins. Replace keyboard. If

304, possible system board prob-

lem.

501-Display Adapter

Failure

Graphics display controller. 1. Reseat graphics card.

2. Clear CMOS.

3. Check monitor connection.

4. Replace graphics card.

1720-SMART Hard Drive

Detects Imminent Failure

Hard drive is about to fail. 1. Determine if hard drive is

giving correct error message.

Enter Computer Setup and run

the Drive Protection System

test under Storage > DPS Self-

test.

2. Apply hard drive firmware

patch if applicable.

3. Back up contents and replace

hard drive.

1796-SATA Cabling Error One or more SATA devices

are improperly attached. For

optimal performance, the

SATA 0 and SATA 1 con-

nectors must be used before

SATA 2 and SATA 3.

Ensure SATA connectors are used

in ascending order. For one

device, use SATA 0. For two

devices, use SATA 0 and SATA 1.

For three devices, use SATA 0,

SATA1, and SATA 2.

1801-Microcode Patch

Error

Processor not supported by

ROM BIOS.

1. Upgrade BIOS to proper

version.

2. Change the processor.