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HP Compaq dx2355 Hardware Reference Manual Download Page 5

Hardware Reference Guide

www.hp.com

1–1

1

Product Features

Standard Configuration Features

The HP Compaq Microtower features may vary depending on the 
model. For a complete listing of the hardware and software installed 
in the computer, run the Diagnostics for Windows utility. Instructions 
for using this utility are provided in the 

Troubleshooting Guide

 on the 

Documentation and Diagnostics CD

.

Microtower Configuration

Summary of Contents for Compaq dx2355

Page 1: ...Hardware Reference Guide HP Compaq Business Desktops dx2355 Microtower Models Document Part Number 481137 001 February 2008 This guide provides basic information for upgrading this computer model ...

Page 2: ...itorial errors or omissions contained herein This document contains proprietary information that is protected by copyright No part of this document may be photocopied reproduced or translated to another language without the prior written consent of Hewlett Packard Company Å WARNING Text set off in this manner indicates that failure to follow directions could result in bodily harm or loss of life Ä...

Page 3: ...es Serviceability Features 2 1 Warnings and Cautions 2 1 Removing the Computer Access Panel 2 2 Removing the Front Bezel 2 3 Installing Additional Memory 2 5 DIMMs 2 5 DDR2 SDRAM DIMMs 2 5 Populating DIMM Sockets 2 6 Installing DIMMs 2 8 Removing a 5 25 Drive Bezel Blank 2 10 Replacing or Upgrading a Drive 2 11 Locating Drive Positions 2 12 Removing a Drive 2 13 Replacing a Drive 2 19 Removing or ...

Page 4: ...y Lock C 1 Cable Lock C 1 Padlock C 2 D Electrostatic Discharge Preventing Electrostatic Damage D 1 Grounding Methods D 1 E Computer Operating Guidelines Routine Care and Shipping Preparation Computer Operating Guidelines and Routine Care E 1 Optical Drive Precautions E 2 Operation E 2 Cleaning E 2 Safety E 2 Shipping Preparation E 3 ...

Page 5: ...rotower features may vary depending on the model For a complete listing of the hardware and software installed in the computer run the Diagnostics for Windows utility Instructions for using this utility are provided in the Troubleshooting Guide on the Documentation and Diagnostics CD Microtower Configuration ...

Page 6: ...ary by model Front Panel Components 1 Optical Drives 6 Power Button 2 Optical Drive Activity Lights 7 Optical Drive Eject Buttons 3 Diskette Drive optional 8 USB Universal Serial Bus Ports 4 Diskette Drive Activity Light optional 9 Headphone Jack 5 Diskette Drive Eject Button optional Microphone Connector ...

Page 7: ... Select Switch 8 l Parallel Port Connector 3 b PS 2 Mouse Connector 9 c Monitor Connector 4 a PS 2 Keyboard Connector h Headphone Line Out Connector 5 o Universal Serial Bus USB q j Audio Line In Connector 6 m Serial Port Connector w g Microphone Connector Arrangement and number of connectors may vary by model This applies for selected models and countries only ...

Page 8: ... or Web site These keys allow you to move left right up and down using the keyboard instead of the mouse 6 Ctrl Keys Used in combination with another key its effect depends on the application software you are using 7 Application Key Used like the right mouse button to open pop up menus in a Microsoft Office application May perform other functions in other software applications 8 Windows Logo Keys ...

Page 9: ...s Windows Logo Key Displays or hides the Start menu Windows Logo Key d Displays the Desktop Windows Logo Key m Minimizes all open applications Shift Windows Logo Key m Undoes Minimize All Windows Logo Key e Launches My Computer Windows Logo Key f Launches Find Document Windows Logo Key Ctrl f Launches Find Computer Windows Logo Key F1 Launches Windows Help Windows Logo Key l Locks the computer if ...

Page 10: ...erial Number Location Each computer has a unique serial number and a product ID number that are located on the top cover of the computer Keep these numbers available for use when contacting customer service for assistance Serial Number and Product ID Location ...

Page 11: ... allow the internal system components to cool before touching Å WARNING To reduce the risk of electrical shock fire or damage to the equipment do not plug telecommunications telephone connectors into the network interface controller NIC receptacles Ä CAUTION Static electricity can damage the electrical components of the computer or optional equipment Before beginning these procedures ensure that y...

Page 12: ...from the power outlet and disconnect any external devices Ä CAUTION Regardless of the power on state voltage is always present on the system board as long as the system is plugged into an active AC outlet You must disconnect the power cord to avoid damage to the internal components of the computer 5 Loosen the screw 1 that secures the access panel to the computer chassis 6 Slide the access panel b...

Page 13: ...computer 3 Turn off the computer properly through the operating system then turn off any external devices 4 Disconnect the power cord from the power outlet and disconnect any external devices Ä CAUTION Regardless of the power on state voltage is always present on the system board as long as the system is plugged into an active AC outlet You must disconnect the power cord to avoid damage to the int...

Page 14: ...e Guide www hp com 2 4 Hardware Upgrades 6 Press outward on the three latches on the right side of the bezel 1 then rotate the right side of the bezel off the chassis 2 followed by the left side Removing the Front Bezel ...

Page 15: ...he system board with up to 4GB of memory configured in a high performing dual channel mode DDR2 SDRAM DIMMs For proper system operation if the computer supports DDR2 SDRAM DIMMs the DIMMs must be industry standard 240 pin unbuffered PC2 6400 800 Mhz compliant 1 8 volt DDR2 SDRAM DIMMs The DDR2 SDRAM DIMMs must also support CAS latency 6 CL 6 for DDR2 800 Mhz contain the mandatory JEDEC SPD informa...

Page 16: ...f the total memory capacity of the DIMMs in Channel A is not equal to the total memory capacity of the DIMMs in Channel B The system will operate in a higher performing dual channel Interleaved mode if the total memory capacity of the DIMMs in Channel A is equal to the total memory capacity of the DIMMs in Channel B However the technology and device width can vary between the channels For example ...

Page 17: ...he sockets are labeled XMM1 XMM2 XMM3 and XMM4 Sockets XMM1 and XMM2 operate in memory channel A Sockets XMM3 and XMM4 operate in memory channel B DIMM Socket Locations Item Description Socket Color 1 DIMM socket XMM1 Channel A White 2 DIMM socket XMM2 Channel B White 3 DIMM socket XMM3 Channel A Black 4 DIMM socket XMM4 Channel B Black ...

Page 18: ...es ensure that you are discharged of static electricity by briefly touching a grounded metal object For more informations refer to Electrostatic Discharge Ä CAUTION When handling a memory module be careful not to touch any of the contacts Doing so may damage the module 1 Turn off the computer properly through the operating system and turn off any external devices 2 Disconnect the power cord from t...

Page 19: ...ve one preinstalled DIMM in socket XMM1 and are adding a second DIMM it is recommended that you will install a DIMM of equal memory capacity into the XMM3 or XMM4 socket Match the notch on the module with the tab on the memory socket 6 Push the module down into the socket ensuring that the module is fully inserted and properly seated Make sure the latches are in the closed position 3 7 Repeat step...

Page 20: ...connect the power cord from the power outlet and the computer and disconnect any external devices 3 Remove the access panel and front bezel Refer to Removing the Computer Access Panel and Removing the Front Bezel 4 While facing the inside of the front bezel press the two retaining tabs on the right towards the outer edge of the bezel 1 and pull the bezel blank inwards to remove it 2 Removing a Bez...

Page 21: ...grading the storage drives A Torx screwdriver is needed to remove and install the guide screws and retainer screws on a drive Ä CAUTION Make sure you back up your personal files on the hard drive to an external storage device such as a CD before removing the hard drive Failure to do so will result in data loss After replacing the primary hard drive you will need to check out the Restore Plus CD to...

Page 22: ...ons The drive configuration shown below may be different than your computer model Drive Positions 1 First 5 25 inch half height bays for optional drives Second 5 25 inch half height bays for optional drives 2 One standard 3 5 inch one third height bays 1 44 MB diskette drive shown ...

Page 23: ...elect Start HP Backup and Recovery and create it now 1 Remove disengage any security devices that prohibit opening the computer 2 Remove all removable media such as diskettes or compact discs from the computer 3 Turn off the computer properly through the operating system then turn off any external devices 4 Disconnect the power cord from the power outlet and disconnect any external devices Ä CAUTI...

Page 24: ...Hardware Reference Guide www hp com 2 14 Hardware Upgrades 6 Remove the two screws that secure the hard disk drive cage to the chassis Removing the Hard Drive Cage Screws ...

Page 25: ...uide www hp com 2 15 Hardware Upgrades 7 Push down the latch on the side of the hard disk drive cage 1 then slide the hard disk drive cage away from the bottom of the chassis 2 as shown below Releasing the Hard Drive Cage ...

Page 26: ...Hardware Reference Guide www hp com 2 16 Hardware Upgrades 8 Lift the hard disk drive cage out of the chassis Removing the Hard Drive Cage ...

Page 27: ...Hardware Reference Guide www hp com 2 17 Hardware Upgrades 9 Disconnect the power cable 1 and data cable 2 from the back of the hard drive Disconnecting the Hard Drive Cables 2 1 ...

Page 28: ...e Guide www hp com 2 18 Hardware Upgrades 10 Remove the four screws that secure the hard disk drive to the hard disk drive cage 1 then slide the hard disk drive out of the hard disk drive cage 2 Removing the Hard Drive ...

Page 29: ... the hard disk drive cage 1 aligning the drive with the four screw holes on the cage Install the four 6 32 standard screws that secure the hard disk drive to the hard disk drive cage 2 Make sure the hard disk drive cables are facing the top of the drive cage If you are replacing an old drive with a new drive use the four retainer screws from the old drive to install the new drive Installing the Ha...

Page 30: ...e Upgrades 3 Connect the power cable 1 and data cable 2 to the back of the hard drive Connecting the Hard Drive Cables Ä CAUTION Never crease or bend a SATA data cable tighter than a 30 mm 1 18 in radius A sharp bend can break the internal wires 2 1 ...

Page 31: ...eference Guide www hp com 2 21 Hardware Upgrades 4 Place the hard disk drive cage into the chassis 1 then slide it down toward the bottom of the chassis until it locks into place 2 Installing the Hard Drive Cage ...

Page 32: ...to avoid any hard drive performance problems If you are adding a second hard drive connect the data cable to the next available unpopulated SATA connector on the system board in the following order SATA0 SATA1 SATA3 SATA2 7 Replace the computer access panel 8 Reconnect the power cord and any external devices then turn on the computer 9 Lock any security devices that were disengaged when the access...

Page 33: ...ling an Expansion Card The computer has 2 PCI expansion slots 1 PCI Express x1 expansion slot and 1 PCI Express x16 expansion slot Expansion Slot Locations Item Description 1 PCI Express x16 expansion slot 2 PCI Express x1 expansion slot 3 PCI expansion slot 4 PCI expansion slot ...

Page 34: ...ower cord from the power outlet and disconnect any external devices 2 Remove the access panel and lay the computer on its side with the opening to internal parts where the access panel was located facing up 3 On the rear panel of the computer remove the screw that secures the slot cover lock in place 1 and slide the slot cover lock away from the slots to remove it from the computer 2 Releasing the...

Page 35: ...e expansion slot cover or the existing expansion card a If you are installing an expansion card in a vacant socket remove the appropriate expansion slot cover on the back of the chassis Pull the slot cover straight up from the socket then away from the inside of the chassis Removing an Expansion Slot Cover ...

Page 36: ... at each end and carefully rock it back and forth until the connectors pull free from the socket Pull the expansion card straight up from the socket 1 then away from the inside of the chassis 2 to release it from the chassis frame Be sure not to scrape the card against the other components Removing an Expansion Card ...

Page 37: ... the system board 2 Replacing or Adding an Expansion Card 6 While holding the expansion card bracket against the chassis slide the slot cover lock down toward the expansion card bracket to secure it in place and replace the screw that secures the slot cover lock 7 Connect the external cables to the installed card if needed Connect internal cables to the system board if needed 8 Replace the compute...

Page 38: ... card 10 While holding the expansion card bracket against the chassis slide the slot cover lock down toward the expansion card brackets and slot covers 1 to secure them in place and replace the screw 2 that secures the slot cover lock Securing the Expansion Cards and Slot Covers 11 Complete the procedure described in the Reassembling the Computer section of this chapter ...

Page 39: ...com 2 29 Hardware Upgrades Reassembling the Computer 1 Insert the three hooks on the left side of the bezel into the slots on the chassis and rotate the bezel on from left to right 1 so that it snaps in place Replacing the Front Bezel ...

Page 40: ...nd tighten the screw 2 Replacing the Side Access Panel 3 Reconnect the power cable to the computer and plug the cable into an electrical outlet 4 Reconnect all peripheral devices to the computer Å WARNING To reduce the risk of electrical shock fire or damage to the equipment do not plug telecommunications or telephone connectors into the network interface controller NIC ports 5 Turn on the compute...

Page 41: ... to 95 F 5 to 35 C Nonoperating 22 to 149 F 30 to 65 C Relative Humidity noncondensing Operating 5 80 5 80 Nonoperating 90 90 Maximum Altitude unpressurized Operating 7 500 ft 2 286 m Nonoperating 15 000 ft 4 572 m Operating temperature is derated 1 0 C per 1 000 ft 300 m to 7 500 ft 2 286 m above sea level no direct sustained sunlight Maximum rate of change is 7 5 C Hr The upper limit may be limi...

Page 42: ...tage Range 100 127 VAC 200 240 VAC Rated Line Frequency 50 60 Hz 50 60 Hz This system utilizes a passive power factor corrected power supply when used in the 230V mode This allows the system to pass the CE mark requirements for use in the countries of the European Union This supply requires the use of an input voltage range select switch Power Output 300 W PFC 300 W PFC Rated Input Current maximum...

Page 43: ...duce the risk of personal injury Do not attempt to recharge the battery Do not expose to temperatures higher than 60 C 140ºF Do not disassemble crush puncture short external contacts or dispose of in fire or water Replace the battery only with the HP spare designated for this product Ä CAUTION Before replacing the battery it is important to back up the computer CMOS settings When the battery is re...

Page 44: ...external devices Then remove the computer access panel It may be necessary to remove an expansion card to gain access to the battery 3 Locate the battery and battery holder on the system board 4 Depending on the type of battery holder on the system board complete the following instructions to replace the battery a To release the battery from its holder squeeze the metal clamp that extends above on...

Page 45: ... replaced use the following steps to complete this procedure 5 Replace the computer access panel 6 Plug in the computer and turn on power to the computer 7 Reset the date and time your passwords and any special system setups using Computer Setup Refer to the Computer Setup F10 Utility Guide on the Documentation and Diagnostics CD ...

Page 46: ...ions Installing a Security Lock The security locks displayed below and on the following page can be used to secure the Microtower computer A port security bracket not shown is also available Go to www hp com for more information Cable Lock Installing a Cable Lock ...

Page 47: ...Hardware Reference Guide www hp com C 2 Padlock Installing a Padlock ...

Page 48: ...n their containers until they arrive at static free workstations Place parts on a grounded surface before removing them from their containers Avoid touching pins leads or circuitry Always be properly grounded when touching a static sensitive component or assembly Grounding Methods There are several methods for grounding Use one or more of the following methods when handling or installing electrost...

Page 49: ...ive floors or dissipating floor mats Use conductive field service tools Use a portable field service kit with a folding static dissipating work mat If you do not have any of the suggested equipment for proper grounding contact an HP authorized dealer reseller or service provider For more information on static electricity contact an HP authorized dealer reseller or service provider ...

Page 50: ...d with the keyboard feet down directly against the front of the desktop unit as this also restricts airflow Keep the computer away from excessive moisture direct sunlight and extremes of heat and cold Keep liquids away from the computer and keyboard Never cover the ventilation slots on the monitor with any type of material Install or enable power management functions of the operating system or oth...

Page 51: ...drive is on wait at least one hour before you turn off the power If you operate the unit immediately it may malfunction while reading Avoid placing the drive in a location that is subject to high humidity extreme temperatures mechanical vibration or direct sunlight Cleaning Clean the panel and controls with a soft dry cloth or a soft cloth lightly moistened with a mild detergent solution Never spr...

Page 52: ...m diskettes from the diskette drives 3 Insert a blank diskette into the diskette drive to protect the drive while in transit Do not use a diskette on which you have stored or plan to store data 4 Turn off the computer and external devices 5 Disconnect the power cord from the electrical outlet then from the computer 6 Disconnect the system components and external devices from their power sources th...

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