Dell 745 manual

Dell™OptiPlex™745SystemsUser'sGuide    Mini Tower Computer  Desktop Computer  Small Form Factor Computer  Ultra Small Form Factor Computer[...]

Back to Contents Page  Advanced Features Dell™OptiPlex™745User'sGuide  LegacySelect Technology Control LegacySelect technology control offers legacy - full, legacy - reduced, or legacy - free solutions based on common platforms, hard - drive images, and help desk procedures.Controlisprovidedtotheadminist[...]

l  Access information about your computer, such as how many processors it has and what operating system it is running. l  Monitor the status of your computer, such as listening for thermal alerts from temperature probes or hard - drive failure alerts from storage devices. A system that has Dell OpenManage Client Instrumentation set up on a ne[...]

l  Off — No intrusion monitoring occurs and no messages appear.  Padlock Ring and Security Cable Slot Use one of the following methods to secure your computer: l  Use a padlock alone or a padlock and looped security cable with the padlock ring. A padlock alone prevents the computer from being opened. A security cable looped around a stat[...]

 Computer Tracking Software Computer tracking software may enable you to locate your computer if it is lost or stolen. The software is optional and may be purchased when you order your Dell™computer,oryoucancontactyourDellsalesrepresentativeforinformationaboutthissecurityfeature.  About Smart Car[...]

 5. To confirm your password, type it a second time and press <Enter>. The password setting changes to Set .  6. Exit system setup. Password protection takes effect when you restart the computer.  Typing Your System Password When you start or restart your computer, the following prompt appears on the screen. If Password Status is set[...]

 1. Enter system setup (see Entering System Setup ) and verify that Admin Password is set to Not Set.  2. Highlight Admin Password and press the left - or right - arrow key. The computer prompts you to type and verify the password. If a character is not permitted, the computer emits a beep.  3. Type and then verify the password. After you [...]

 2. WhentheblueDELL™logoappears,press<F2>immediately. If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft ® Windows ® desktop. Then shut down your computer (see Turning Off Your Computer ) and try again.  System Setup Screens The system setup scree[...]

Onboard Devices Integrated NIC ( On default) Enables or disables the integrated NIC controller. Settings are On , Off , On w/RPL , or On w/ PXE . When the On w/ PXE or the On w/RPL setting is active, if a boot routine is not available from the network server, the computer attempts to boot from the next device in the boot sequence list. Integrated A[...]

NOTE: Switching to performance mode may cause the drive to be noisier, but its performance is not affected. Changing the acoustics setting does not alter your hard - drive image. Security Unlock Setup ( Locked default) When an administrator password is being used, allows the user access to modify system setup settings. Enter the administrator passw[...]

 Boot Sequence This feature allows you to change the boot sequence for devices.  Option Settings l  USB Device — The computer attempts to boot from the USB device. If no operating system is present, the computer generates an error message. l  Onboard or USB Floppy Drive — The computer attempts to boot from the floppy drive. If the f[...]

 2. Turn on (or restart) your computer.  3. When F2 = Setup, F12 = Boot Menu appears in the upper - right corner of the screen, press <F12>. If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft Windows desktop. Then shut down your computer (see Turning Off Your Computer ) and try again[...]

 Clearing Forgotten Passwords   Small Form Factor  Ultra Small Form Factor Computer  Jumper  Setting  Description PSWD Password features are enabled (default setting). Password features are disabled. RTCRST The real - time clock has not been reset.  The real - time clock is being reset (jumpered temporarily).  jumpe[...]

 1. Follow the procedures in Before You Begin .  2. Locate the 2 - pin password jumper (PSWD) on the system board, and remove the jumper to clear the password. See Jumper Settings .  3. Replace the computer cover (see Replacing the Computer Cover ).  4. Connect your computer and monitor to electrical outlets, and turn them on.  5. Af[...]

 Power Management Your computer can be set to use less power when you are not working. You control the power usage through the operating system installed on your computer and certain option settings in system setup (see System Setup ). These periods of reduced power are called "sleep modes." l  Standby . In this sleep mode, power is[...]

Back to Contents Page  Battery Dell™OptiPlex™745User'sGuide  Replacing the Battery  Replacing the Battery  A coin - cell battery maintains computer configuration, date, and time information. The battery can last several years. The battery may need replacing if an incorrect time or date is displayed during the boo[...]

 5. Install the new system battery. a.  Support the battery connector by pressing down firmly on the positive side of the connector. b.  Hold the battery with the "+" facing up, and slide it under the securing tabs at the positive side of the connector. c.  Press the battery straight down into the connector until it snaps into[...]

Back to Contents Page  Before You Begin Dell™OptiPlex™745User'sGuide  Recommended Tools  Turning Off Your Computer  Before Working Inside Your Computer This chapter provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that the follow[...]

 3. Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board.  4. If applicable, remove the computer stand (for instructions, see the documentation that came with the stand) and the cable cover, if attached (see Cable Cover (Optional) ).   5. Remove the c[...]

Back to Contents Page  Cleaning Your Computer Dell™OptiPlex™745User'sGuide  Computer, Keyboard, and Monitor  Mouse  Floppy Drive  CDs and DVDs   Computer, Keyboard, and Monitor  l  Use a can of compressed air to remove dust from between the keys on the keyboard. l  To clean your monitor[...]

Clean your floppy drive using a commercially available cleaning kit. These kits contain pretreated floppy disks to remove contaminants that accumulate during normal operation.  CDs and DVDs If you notice problems, such as skipping, with the playback quality of your CDs or DVDs, try cleaning the discs.  1. Hold the disc by its outer edge. You [...]

Back to Contents Page  Desktop Computer Dell™OptiPlex™745User'sGuide  About Your Desktop Computer  Inside Your Computer  About Your Desktop Computer  Front View 1 USB 2.0 connectors (2) Use the front USB connectors for devices that you connect occasionally, such as joysticks or cameras, or for bootable USB [...]

 Back View  Back - Panel Connectors 10 3.5 - inch drive bay Can contain an optional floppy drive or optional Media Card Reader. 11 5.25 - inch drive bay Can contain an optical drive. Insert a CD or DVD (if supported) into this drive. 1 card slots Access connectors for any installed PCI and PCI Express cards. 2 back - panel connectors Plug ser[...]

 Inside Your Computer   indicates that the network cable has been securely attached.  NOTE: Do not plug a telephone cable into the network connector. On computers with a network connector card, use the connector on the card. It is recommended that you use Category 5 wiring and connectors for your network. If you must use Category 3 wiri[...]

 System Board Components Back to Contents Page  2 power supply 6 heat sink assembly 3 optional chassis - intrusion switch 7 front I/O panel 4 system board   1 internal speaker (INT_SPKR) 11 intrusion switch connector (INTRUDER) 2 processor connector (CPU) 12 battery socket (BATT) 3 processor power connector (12VPOWER) 13 PCI Express x16[...]

Dell™OptiPlex™745User'sGuide Notes, Notices, and Cautions IfyoupurchasedaDell™nSeriescomputer,anyreferencesinthisdocumenttoMicrosoft ® Windows ® operating systems are not applicable. Information in this document is subject to change without notice. © 2006DellInc.Allr[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Expansion Cards  Expansion Cards  YourDell™computersupportsaserialportadapterandprovidesthefollowingslotsforPCIandPCIExpresscards: l  Two low - profile PCI card slots l  One low - profile PCI Express x16[...]

 5. If you are replacing a card that is already installed in the computer, remove the card. If necessary, disconnect any cables connected to the card.  6. Prepare the card for installation.   7. If you are installing a PCI Express card, press the lever on the securing tab away from the card connector as you insert the new card.  8. P[...]

 9. If you are installing a PCI Express card, release the lever on the securing tab, and ensure that the securing tab fits into the notch on the front end of the card.  10. Gently press down on the card - retention latch to secure the card.  11. If you are installing a serial port adapter, connect the adapter cable to the serial port adapt[...]

 12. Connect any cables that should be attached to the card.  13. Replace the computer cover (see Replacing the Computer Cover ), reconnect the computer and devices to electrical outlets, and then turn them on.  14. If you installed a sound card: a.  Enter system setup, select Audio Controller , and change the setting to Off (see Enteri[...]

 3. If necessary, disconnect any cables connected to the card.  4. If you are removing a PCI Express x16 card, press the lever on the securing tab with your thumb until you release the securing tab.  5. Grasp the card by its top corners, and ease it out of its connector.  6. If you are removing the card permanently, install a filler bra[...]

b.  Gently pull on the handle and lift the riser - card cage up and away from the computer.  4. If you are installing a new card, remove the filler bracket to create an empty card - slot opening. If you are replacing a card that is already installed in the computer, remove the card. If necessary, disconnect any cables connected to the card. G[...]

a.  Align the tabs in the side of the riser - card cage with the slots on the side of the computer, and slide the riser - card cage down into place. b.  Ensure that the riser cards are fully seated in the connectors on the system board.  10. Reconnect any cables that you removed in step 3 .  11. Connect any cables that should be attache[...]

 3. Press in on the tab to raise the card - retention latch.  4. If necessary, disconnect any cables connected to the card.  5. Grasp the card by its top corners, and ease it out of its connector.  6. If you are removing the card permanently, install a filler bracket in the empty card - slot opening.  7. Lower the card - retention la[...]

a.  Enter system setup, select Network Controller , and change the setting to On (see Entering System Setup ). b.  Connect the network cable to the integrated network connector on the back panel of the computer. Back to Contents Page [...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Processor  Processor   Removing the Processor  1. Follow the procedures in Before You Begin .  2. Loosen the captive screw on each side of the heat sink assembly.   3. Rotate the heat sink assembly upward, and remove the assembly from the computer. L[...]

 5. Gently remove the processor from the socket. Leave the release lever extended in the release position so that the socket is ready for the new processor.  Installing the Processor  1. Follow the procedures in Before You Begin .  2. Unpack the new processor, being careful not to touch the underside of the processor.  3. If the rele[...]

 6. Set the processor lightly in the socket and ensure that the processor is positioned correctly.  7. When the processor is fully seated in the socket, close the processor cover. Ensure that the tab on the processor cover is positioned underneath the center cover latch on the socket.  8. Pivot the socket release lever back toward the sock[...]

 12. Replace the computer cover (see Replacing the Computer Cover ). Back to Contents Page  1 heat sink assembly 2 heat - sink assembly bracket 3 captive screw housing (2)[...]

Back to Contents Page  Drives Dell™OptiPlex™745User'sGuide  Optical Drive  Floppy Drive and Media Card Reader  Hard Drive Your computer supports: l  One SATA (serial ATA) hard drive l  One optional floppy drive or media card reader l  One optional SATA optical drive  General Installation Guideli[...]

Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled - in hole on the other connector. Keyed connectors ensure that the pin - 1 wire in the cable (indicated by the colored stripe along one edge of certain cables — SATA cables do not use a colored stripe) goes to th[...]

 3. Disconnect the power and data cables from the back of the drive.  4. If you are not replacing the optical drive at this time, install the optical - drive insert by lowering it into the drive bay until it clicks into place. Contact Dell if you need a drive - bay insert.  Installing an Optical Drive  1. Unpack the drive and prepare it[...]

 3. If you are replacing an existing drive: a.  Remove the three shoulder screws from the existing drive. b.  Insert the three shoulder screws into the sides of the new drive and tighten them.  4. Connect the power and data cables to the drive.  5. Align the shoulder screws with the screw guides, and slide the drive into the bay unti[...]

 Floppy Drive and Media Card Reader    Removing a Floppy Drive or Media Card Reader  1. Follow the procedures in Before You Begin .  2. Remove the optical drive and carefully set it aside (see Optical Drive ).  3. Pull up on the drive - release latch and slide the floppy drive or media card reader towards the back of the comput[...]

 Installing a Floppy Drive or Media Card Reader  1. If you are installing a new drive or media card reader: a.  Use a small flat - edge screw driver on the back side of the drive - panel insert to gently pop off the insert. b.  Remove the four shoulder screws from the drive - panel insert. c.  Pull to remove the floppy - drive insert[...]

6. Replace the optical drive (see Optical Drive ).  7. Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents.  8. Replace the computer cover (see Replacing the Computer Cover ).  9. Enter system setup and set the Diskette Drive option to enable your new floppy drive (see System Setup )[...]

 1. Check the documentation for the drive to verify that it is configured for your computer.  2. Unpack the replacement hard drive, and prepare it for installation.  3. If your replacement hard drive does not have the plastic hard - drive bracket attached, remove the bracket from the existing drive by unsnapping it from the drive.  4. A[...]

 7. Replace the floppy drive and optical drive.  8. Check all connectors to be certain that they are properly cabled and firmly seated.  9. Replace the computer cover (see Replacing the Computer Cover ).  10. If the drive you just installed is the primary drive, insert a bootable medium into your boot drive.  11. Turn on the computer[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  I/O Panel  I/O Panel  Removing the I/O Panel    1. Follow the procedures in Before You Begin .  2. Remove the cable from the I/O panel by pulling on the pull - loop.  3. Remove the screw that secures the I/O panel to the desktop computer.  4. Gent[...]

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Back to Contents Page Dell™OptiPlex™745User'sGuide  Power Supply  Power Supply  Replacing the Power Supply   1. Follow the procedures in Before You Begin .  2. Disconnect the DC power cables from the system board and the drives. Note the routing of the DC power cables underneath the tabs in the computer cha[...]

 11. Replace the optical drive (see Optical Drive ).  12. Connect the AC power cable to the connector.  13. Replace the computer cover (see Replacing the Computer Cover ).  DC Power Connectors  DC Power Connector P1  Pin Number  Signal name  18 - AWG Wire 1 +3.3 VDC Orange 2 +3.3 VDC Orange 3 GND Black 4 +5 VDC Red 5 GND Bla[...]

 DC Power Connector P2  DC Power Connector P3   DC Power Connector P4  DC Power Connector P5 and P6 22 +5 VDC Red 23 +5 VDC Red 24 GND Black *Use 22 - AWG wire instead of 18 - AWG wire.  Pin Number  Signal Name  18 - AWG Wire 1 GND Black 2 GND Black 3 +12 VDC Yellow 4 +12 VDC Yellow  Pin Number  Signal name  18 - AW[...]

Back to Contents Page  Pin Number Signal name 18 - AWG Wire 1 +3.3 VDC Orange 2 GND Black 3 +5 VDC Red 4 GND Black 5 +12 VDC Yellow[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Removing the Computer Cover  Removing the Computer Cover    1. Follow the procedures in Before You Begin .  2. If you have installed a padlock through the padlock ring on the back panel, remove the padlock.  3. Locate the cover release latch shown in th[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Desktop Computer Specifications  Desktop Computer Specifications  Microprocessor Microprocessor type Intel ® Pentium ® 4, Pentium ® D, Celeron ® , orCore™ processor Internal cache atleast512KBeight - way set associative, write - bac[...]

Bus type PCI 2.3 PCI Express 1.0A SATA 1.0A and 2.0 USB 2.0 Bus speed PCI: 133 MB/s PCI Express x16: 8 GB/s bidirectional speed SATA: 1.5 Gbps and 3.0 Gbps USB: 480 Mbps Cards half - length, full - height cards supported with optional riser - card cage Default: no riser - card cage low - profile cards supported PCI  connectors two card size low [...]

Audio two connectors for line - in/ microphone and line - out; two front - panel connectors for headphones and microphone System board connectors: SATA two 7 - pin connectors internal USB 10 - pin header for optional media card reader (3.5 - inch bay device) Floppy drive 34 - pin connector Serial 12 - pin connector for optional second serial port c[...]

Back to Contents Page   Environmental Temperature: Operating 10°to35°C(50°to95°F) Storage – 40°to65°C( – 40°to149°F) Relative humidity 20% to 80% (noncondensing) Maximum vibration: Operating 0.25 G at 3 to 200 Hz at 0.5 octave/min Storage 0.5 G at 3 to 200 Hz at 1 octave/min Maximum shock: Operating b[...]

Back to Contents Page  FCC Notices (U.S. Only) Dell™OptiPlex™745User'sGuide  FCC Class B This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the manufacturer's instruction manual, may cause interference with radio and television reception. This equi[...]

Back to Contents Page  Finding Information Dell™OptiPlex™745User'sGuide NOTE: Some features or media may be optional and may not ship with your computer. Some features or media may not be available in certain countries. NOTE: Additional information may ship with your computer.  What Are You Looking For?  Find It Here l[...]

l  Use the Service Tag to identify your computer when you use support.dell.com or contact support. l  Enter the Express Service Code to direct your call when contacting support. l  Solutions — Troubleshooting hints and tips, articles from technicians, and online courses, frequently asked questions l  Community — Online discussion wi[...]

Back to Contents Page  Your operating system product key label is located on your computer (see Service Tag and Microsoft ® Windows ® License ).  NOTE: The color of your CD varies based on the operating system you ordered.[...]

Back to Contents Page  Getting Help Dell™OptiPlex™745User'sGuide  Obtaining Assistance  Problems With Your Order  Product Information  Returning Items for Warranty Repair or Credit  Before You Call  Contacting Dell  Obtaining Assistance   1. Complete the procedures in Troubleshoot[...]

la - techsupport@dell.com (Latin America and Caribbean countries only) apsupport@dell.com (Asian/Pacific countries only) support.jp.dell.com (Japan only) support.euro.dell.com (Europe only) l  Electronic Quote Service apmarketing@dell.com (Asian/Pacific countries only) sales_canada@dell.com (Canada only)  AutoTech Service Dell's automate[...]

Returns that are missing any of the preceding requirements will be refused at Dell's receiving dock and returned to you.  Before You Call Remember to fill out the Diagnostics Checklist (see Diagnostics Checklist ). If possible, turn on your computer before you call Dell for assistance and call from a telephone at or near the computer. You m[...]

Country Code: 54 City Code: 11 E- mail: la - techsupport@dell.com   E- mail: us_latin_services@dell.com   E- mail for desktop and portable computers: la - techsupport@dell.com   E- mail for servers and EMC ® storage products: la_enterprise@dell.com   Customer Care toll - free:0 - 800 - 444 - 0730  Technica[...]

Sales (Home Sales/Small Business) toll - free:1 - 800 - 387 - 5752 Sales (med./large bus., government) toll - free:1 - 800 - 387 - 5755 Spare Parts Sales & Extended Service Sales 18664403355 Cayman Islands General Support 1- 800 - 805 - 7541 Chile (Santiago) Country Code: 56 City Code: 2 Sales and Customer Support toll - free:[...]

Country Code: 358 City Code: 9 Sales under 500 employees 0207533540 Fax 0207533530 Sales over 500 employees 0207533533 Fax 0207533530 France (Paris) (Montpellier) International Access Code: 00 Country Code: 33 City Codes: (1) (4) Website: support.euro.dell.com  Home and Small Business  Technical Suppo[...]

Ireland (Cherrywood) International Access Code: 00 Country Code: 353 City Code: 1 Sales  Ireland Sales 012044444 Dell Outlet 1850200778 Online Ordering HelpDesk 1850200778 Customer Care  Home User Customer Care 012044014 Small Business Customer Care 012044014 Corporate Customer Care 1850200982 Technical Sup[...]

Latin America Sales (Austin, Texas, U.S.A.) 512728 - 4397 SalesFax (Austin, Texas, U.S.A.) 512728 - 4600 or512728 - 3772 Luxembourg International Access Code: 00 Country Code: 352 Website: support.euro.dell.com  Support 3420808075 Home/Small Business Sales +32(0)27131596 Corporate Sales 26257781 Cu[...]

International Access Code: 011 Country Code: 48 City Code: 22 Customer Service Phone 5795700 Customer Care 5795999 Sales 5795999 Customer Service Fax 5795806 Reception Desk Fax 5795998 Switchboard 5795999 Portugal International Access Code: 00 Country Code: 351   Website: support.euro.d[...]

International Access Code: 00 Country Code: 46 City Code: 8 Relational Customer Care 0859005642 Home/Small Business Customer Care 0858770527 Employee Purchase Program (EPP) Support 0201401444 Technical Support Fax 0859005594 Sales 0859005185 Switzerland (Geneva) International Access Code: 00 Country Code[...]

Back to Contents Page  U.S.A. (Austin, Texas) International Access Code: 011 Country Code: 1 Employee Purchase Program (EPP) Customers toll - free:1 - 800 - 695 - 8133 Financial Services website: www.dellfinancialservices.com  Financial Services (lease/loans) toll - free:1 - 877 - 577 - 3355 Financial Services (Dell Preferred Accounts [[...]

Back to Contents Page  Glossary Dell™OptiPlex™745User'sGuide A B C D E F G H I K L M N O P R S T U V W X Z Terms in this Glossary are provided for informational purposes only and may or may not describe features included with your particular computer.  A AC — alternating current — The form of electricity that powers y[...]

CD -R — CD recordable — A recordable version of a CD. Data can be recorded only once onto a CD - R. Once recorded, the data cannot be erased or written over. CD - RW — CD rewritable — A rewritable version of a CD. Data can be written to a CD - RW disc, and then erased and written over (rewritten). CD - RW drive — A drive that can read CDs[...]

access to transfer data and often improves performance. EIDE — enhanced integrated device electronics — An improved version of the IDE interface for hard drives and CD drives. EMI — electromagnetic interference — Electrical interference caused by electromagnetic radiation. ENERGY STAR ® — Environmental Protection Agency requirements t[...]

Hz — hertz — A unit of frequency measurement that equals 1 cycle per second. Computers and electronic devices are often measured in kilohertz (kHz), megahertz (MHz), gigahertz (GHz), or terahertz (THz).  I IC — integrated circuit — A semiconductor wafer, or chip, on which thousands or millions of tiny electronic components are fabricated[...]

memory module — A small circuit board containing memory chips, which connects to the system board. MHz — megahertz — A measure of frequency that equals 1 million cycles per second. The speeds for computer processors, buses, and interfaces are often measured in MHz. Mini PCI — A standard for integrated peripheral devices with an emphasis on [...]

 R RAID — redundant array of independent disks — Amethodofprovidingdataredundancy.SomecommonimplementationsofRAIDincludeRAID0,RAID1, RAID5,RAID10,andRAID50. RAM — random - access memory — The primary temporary storage area for program instructions and data. Any information[...]

S- video TV - out — A connector used to attach a TV or digital audio device to the computer. SXGA — super - extended graphics array — A video standard for video cards and controllers that supports resolutions up to 1280 x 1024. SXGA+ — super - extended graphics array plus — A video standard for video cards and controllers that supports re[...]

your favorite picture and make it wallpaper. WLAN — wireless local area network. A series of interconnected computers that communicate with each other over the air waves using access points or wireless routers to provide Internet access. write - protected — Files or media that cannot be changed. Use write - protection when you want to protect d[...]

Back to Contents Page  Memory Dell™OptiPlex™745User'sGuide  DDR2 Memory Overview  Addressing Memory With 4 - GB or Greater Configurations (32 - bit Operating Systems Only)  Removing Memory  Installing Memory Your computer supports non - ECC DDR2 memory only. For more information on the type of memory [...]

 Addressing Memory With 4 - GB or Greater Configurations (32 - bit Operating Systems Only) This computer supports a maximum of 8 GB of memory. Current 32 - bit operating systems, such as Microsoft ® Windows ® XP, can use a maximum of 4 GB of address space; however, the amount of memory available to the operating system is less than that [...]

 4. Remove the memory module. If you are replacing a memory module, see Installing Memory .  5. If you are using a desktop computer, replace the optical drive (see Optical Drive ).  6. Replace the computer cover (see Replacing the Computer Cover ).  Installing Memory   1. Follow the procedures in Before You Begin .  2. If you a[...]

5. Insert the module into the connector until the module snaps into position. If you insert the module correctly, the securing clips snap into the cutouts at each end of the module.  6. If you are using a desktop computer, replace the optical drive (see Optical Drive ).  7. Replace the computer cover (see Replacing the Computer Cover ).  8[...]

Dell™OptiPlex™745User'sGuide Notes, Notices, and Cautions IfyoupurchasedaDell™nSeriescomputer,anyreferencesinthisdocumenttoMicrosoft ® Windows ® operating systems are not applicable. Information in this document is subject to change without notice. © 2006DellInc.Allr[...]

Back to Contents Page  Expansion Cards Dell™OptiPlex™745User'sGuide  Installing an Expansion Card  Removing an Expansion Card  YourDell™computersupportsaserialadapterandprovidesthefollowingconnectorsforPCIandPCIExpresscards. l  Two PCI card slots l  On[...]

 3. If you are installing a new card, remove the filler bracket to create a card - slot opening. Then continue with step 5.  4. If you are replacing a card that is already installed in the computer, remove the card. If necessary, disconnect any cables connected to the card.  5. If your card includes a card retention bar, remove the bar. Ge[...]

 10. Before you lower the card retention mechanism, ensure that: l  The tops of all cards and filler brackets are flush with the alignment bar. l  The notch in the top of the card or filler bracket fits around the alignment guide.  11. Secure the card(s) by closing the card retention latch and snapping it into place.  12. Connect any[...]

 3. If necessary, disconnect any cables connected to the card.  4. Grasp the card by its top corners, and ease it out of its connector.  5. If you are removing the card permanently, install a filler bracket in the empty card - slot opening.  6. Before you lower the card retention mechanism, ensure that: l  The tops of all cards and f[...]

 10. If you removed a sound card: a.  Enter system setup, select Audio Controller , and change the setting to On (see System Setup ). b.  Connect external audio devices to the audio connectors on the back panel of the computer.  11. If you removed an network - adapter card connector: a.  Enter system setup, select Network Controller [...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Processor  Processor   Removing the Processor  1. Follow the procedures in Before You Begin .  2. Loosen the captive screw on each side of the heat sink assembly.   3. Rotate the heat sink assembly upward, and remove it from the computer. Lay the hea[...]

 5. Gently remove the processor from the socket. Leave the release lever extended in the release position so that the socket is ready for the new processor.  Installing the Processor  1. Follow the procedures in Before You Begin .  2. Unpack the new processor, being careful not to touch the underside of the processor.  3. If the rele[...]

 6. Set the processor lightly in the socket and ensure that the processor is positioned correctly.  7. When the processor is fully seated in the socket, close the processor cover. Ensure that the tab on the processor cover is positioned underneath the center cover latch on the socket.  8. Pivot the socket release lever back toward the sock[...]

Back to Contents Page  Drives Dell™OptiPlex™745User'sGuide  General Installation Guidelines  Hard Drive  Drive - Panel Inserts  Floppy Drive and Media Card Reader  Optical Drive Your computer supports: l  Two SATA (Serial ATA) hard drives l  One floppy drive or Media Card Reader l  Two [...]

Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled - in hole on the other connector. Keyed connectors ensure that the pin - 1 wire in the cable (indicated by the colored stripe along one edge of certain cables — SATA cables do not use a colored stripe) goes to th[...]

 5. Press in on the blue release tabs on each side of the drive and slide the drive up and out of the computer.  Installing a Hard Drive  1. Unpack the replacement hard drive, and prepare it for installation.  2. Check the documentation for the drive to verify that it is configured for your computer.  3. If your replacement hard driv[...]

 4. Gently spread the sides of the drive bracket and slide the hard drive into the bracket until the drive clicks into place.  5. Carefully slide the hard drive into the drive bay until it clicks into place.  6. Connect the power and data cables to the drive.  7. Ensure that the data cable is securely connected to the connector on the s[...]

 11. Enter system setup (see Entering System Setup ), and update the appropriate Primary Drive option ( 0 or 1 ).  12. Exit system setup, and reboot the computer.  13. Partition and logically format your drive before you proceed to the next step. See the documentation for your operating system for instructions.  14. Test the hard drive [...]

 8. Attach the SATA connector removed in step5 to the first hard drive.  9. Locate an unused SATA connector on the system board and attach a data cable to this connector and to the second hard drive.  10. Replace the computer cover (see Replacing the Computer Cover ).  Drive - Panel Inserts If you are installing a new floppy or optic[...]

 3. Select the drive - panel insert in front of the drive bay that you want to use.  4. Gently press the release tab of the insert to remove it from the drive panel.  5. Reattach the drive panel to the front of the computer. The drive panel only fits one way. 1 drive panel 2 release tab 3 drive - panel insert 1 optical - drive panel insert[...]

 Floppy Drive and Media Card Reader    Removing the Floppy Drive or Media Card Reader  1. Follow the procedures in Before You Begin .  2. Remove the drive panel by sliding the drive release latch downward to open the panel, and then remove it from the hinges.  3. Disconnect the power and data cables from the back of the floppy [...]

 4. Attach the power and data cables to the floppy drive or Media Card Reader.  5. Replace the computer cover (see Replacing the Computer Cover ).  6. Enter system setup (see Entering System Setup ), and use the Diskette Drive option to enable your new floppy drive.  7. Verify that your computer works correctly by running the Dell Diagn[...]

 2. Disconnect the power and data cables from the back of the drive.  3. Grasp the sliding plate lever and slide it towards the top of the computer until the drive panel snaps open; while holding the lever in place, slide the drive out of the computer.  Installing an Optical Drive  1. Follow the procedures in Before You Begin .  2. I[...]

 6. Connect the power and data cables to the drive and to the system board.  7. Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents.  8. Replace the computer cover (see Replacing the Computer Cover ).  9. Update your configuration information in system setup by setting the appropr[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  I/O Panel  Removing the I/O Panel    1. Follow the procedures in Before You Begin .  2. Remove the screw that secures the I/O panel. Press on the release button and pull on the loop to slide the card away from the computer.  3. Disconnect all of the cables[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Power Supply  Power Supply  Replacing the Power Supply   1. Follow the procedures in Before You Begin .  2. Disconnect the DC power cables from the system board and the drives. Note the routing of the DC power cables underneath the tabs in the computer cha[...]

9. Reconnect the DC power cables to the power supply.  10. Connect the AC power cable to the AC power connector.  11. Replace the computer cover (see Replacing the Computer Cover ).  DC Power Connectors  DC Power Connector P1  Pin Number  Signal name  18 - AWG Wire 1 +3.3 VDC Orange 2 +3.3 VDC Orange 3 GND Black 4 +5 VDC Red 5 [...]

 DC Power Connector P2  DC Power Connectors P3, P5, P8, and P9  DC Power Connector P7  DC Power Connector P10 19 GND Black 20 NC NC 21 +5 VDC Red 22 +5 VDC Red 23 +5 VDC Red 24 GND Black *Optional wire. Use 22 - AWG wire instead of 18 - AWG wire.  Pin Number  Signal Name  18 - AWG Wire 1 GND Black 2 GND Black 3 +12 VADC Yellow [...]

Back to Contents Page   Pin Number  Signal name  18 - AWG Wire 1 +12 VBDC White 2 GND Black 3 GND Black 4 +5 VDC Red[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Removing the Computer Cover    1. Follow the procedures in Before You Begin .  2. Lay the computer on its side as shown in the illustration.  3. Locate the cover release latch shown in the illustration. Then, slide the release latch back as you lift the cover[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Mini Tower Computer Specifications  Mini Tower Computer Specifications  Microprocessor Microprocessor type Intel ® Pentium ® 4, Pentium ® D, Celeron ® , orCore™ processor Internal cache At least 512 - KB pipelined - burst, eight - way set assoc[...]

Bus type PCI 2.3 PCI Express 1.0A SATA 1.0A and 2.0 USB 2.0 Bus speed PCI: 133 MB/s PCI Express x16: 8 GB/s bidirectional speed PCI Express x1: 5 Gbps SATA: 1.5 Gbps and 3.0 Gbps USB: 480 Mbps Cards: full - height cards supported PCI:  connectors two connector size 120 pins connector data width (maximum) 32 bits PCI Express:  connectors one x[...]

Back to Contents Page   Controls and Lights Power control push button Power light green light — blinking green indicates sleep mode; solid green indicates power - on state. amber light — blinking amber indicates a problem with an installed device; solid amber indicates an internal power problem (see Power Problems ). Hard - drive access l[...]

Back to Contents Page  Microsoft ® Windows ® XP Features Dell™OptiPlex™745User'sGuide  Transferring Information to a New Computer  User Accounts and Fast User Switching  Setting Up a Home and Office Network  Transferring Information to a New Computer The Microsoft ® Windows ® XP operating sy[...]

8. Click Finish . To transfer data to the new computer:  1. On the Now go to your old computer screen on the new computer, click Next .  2. On the Where are the files and settings? screen, select the method you chose for transferring your settings and files and click Next . The wizard reads the collected files and settings and applies them to[...]

 User Accounts and Fast User Switching  Adding User Accounts After the Microsoft Windows XP operating system is installed, the administrator or a user with administrator rights can create additional user accounts.  1. Click the Start button and click Control Panel .  2. In the Control Panel window, click User Accounts .  3. Under Pic[...]

 Network Setup Wizard The Microsoft ® Windows ® XP operating system provides a Network Setup Wizard to guide you through the process of sharing files, printers, or an Internet connection between computers in a home or small office.  1. Click the Start button, point to All Programs ® Accessories ® Communications , and then click Network Se[...]

Back to Contents Page  Replacing the Computer Cover Dell™OptiPlex™745User'sGuide   1. Ensure that all cables are connected, and fold cables out of the way. Gently pull the power cables toward you so that they do not get caught underneath the drives.  2. Ensure that no tools or extra parts are left inside the compute[...]

Back to Contents Page  Expansion Cards Dell™OptiPlex™745User'sGuide  Installing an Expansion Card  Removing an Expansion Card  YourDell™computersupportsaserialadapterandprovidesthefollowingconnectorsforPCIExpresscards. l  One PCI Express x16 card slot Your comp[...]

 8. If applicable, before replacing the card retention mechanism, ensure that: l  The tops of all cards and filler brackets are flush with the alignment bar. l  The notch in the top of the card or filler bracket fits around the alignment guide.  9. Snap the card retention mechanism into place, securing the card(s) in the computer.  1[...]

 14. If you installed an network adapter card and want to turn off the integrated network adapter: a.  Enter system setup, select Network Controller , and change the setting to Off (see Entering System Setup ). b.  Connect the network cable to the network adapter card's connectors. Do not connect the network cable to the integrated ne[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Processor  Processor   Removing the Processor  1. Follow the procedures in Before You Begin .  2. Loosen the captive screw on each side of the heat sink assembly.   3. Rotate the heat sink assembly upward, and remove the assembly from the computer. L[...]

 5. Gently remove the processor from the socket. Leave the release lever extended in the release position so that the socket is ready for the new processor.  Installing the Processor  1. Follow the procedures in Before You Begin .  2. Unpack the new processor, being careful not to touch the underside of the processor.  3. If the rele[...]

 6. Set the processor lightly in the socket and ensure that the processor is positioned correctly.  7. When the processor is fully seated in the socket, close the processor cover. Ensure that the tab on the processor cover is positioned underneath the center cover latch on the socket.  8. Pivot the socket release lever back toward the sock[...]

 12. Replace the computer cover (see Replacing the Computer Cover ). Back to Contents Page  1 heat sink assembly 2 heat - sink assembly bracket 3 captive screw in housing (2)[...]

Back to Contents Page  Drives Dell™OptiPlex™745User'sGuide  Hard Drive  Replacing a Hard - Drive Fan (Only Required for Certain Configurations)  Optical Drive  Floppy Drive and Media Card Reader Your computer supports: l  One SATA (serial ATA) drive l  One floppy drive or Media Card Reader l [...]

 Power Cable Connectors  Connecting and Disconnecting Drive Cables When connecting and disconnecting a SATA data cable, hold the cable by the black connector at each end. SATA interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled - in hole on the other connector. [...]

 7. Disconnect the power and data cable from the drive.  Installing a Hard Drive  1. Check the documentation for the drive to verify that it is configured for your computer.  2. Unpack the replacement hard drive, and prepare it for installation.  3. If your replacement hard drive does not have the plastic drive bracket attached, remo[...]

 4. Connect the power and data cables to the drive.  5. Check all connectors to ensure that they are properly cabled and firmly seated.  6. Gently position the drive until it clicks into place.  7. Check all connectors to be certain that they are properly cabled and firmly seated.  8. Replace the computer cover (see Replacing the Com[...]

 15. Install your operating system on the hard drive. For instructions, see the documentation that came with your operating system.  Replacing a Hard - Drive Fan (Only Required for Certain Configurations)  1. Follow the instructions in Before You Begin .  2. Remove the hard drive (see Removing a Hard Drive ).  3. Turn the hard drive [...]

2. Lay the computer on its side so that the system board is on the bottom of the inside of the computer.  3. Pull up on the drive release latch and slide the drive towards the back of the computer. Then lift up to remove the drive from the computer.  4. Disconnect the data cable from the system board connector (see System Board Components ). [...]

2. Connect the data cable to the drive.  3. Gently position the drive until it clicks into place.  4. Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents.  5. Replace the computer cover (see Replacing the Computer Cover ).  6. See the documentation that came with the drive for ins[...]

 4. If you are removing a floppy drive, pull up the cable release tab to unlock it.  5. Disconnect the data cable from the back of the floppy drive or Media Card Reader.  6. If you are removing a floppy drive, pull up the cable release tab to unlock it.  7. Disconnect the data cable from the system board.  8. Pull up on the drive rel[...]

3. If you are installing a floppy drive, insert the data cable into the cable release tab on the floppy drive and press down on the tab until it clicks to lock it in place. If you are installing a Media Card Reader, insert the cable into the connector on the Media Card Reader.  4. If you are installing a floppy drive, insert the data cable into [...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  I/O Panel  I/O Panel  Removing the I/O Panel    1. Follow the procedures in Before You Begin .  2. Remove the optical drive and floppy drive from the drive bays, if installed (see Drives ).  3. Remove the processor heatsink (see Processor ).  4. R[...]

Replacing the I/O Panel  1. To replace the I/O panel, follow the removal procedures in the reverse order. Back to Contents Page  NOTE: Use the guides on the I/O panel bracket to help position the I/O panel in place and use the notch on the I/O panel bracket to help seat the card.[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Power Supply  Power Supply  Replacing the Power Supply   1. Follow the procedures in Before You Begin .  2. Remove the three screws that attach the power supply to the computer chassis.  3. Disconnect the DC power cables from the system board and the dr[...]

 DC Power Connectors  DC Power Connector P1  Pin Number  Signal name  18 - AWG Wire 1 +3.3 VDC Orange 2 +3.3 VDC Orange 3 GND Black 4 +5 VDC Red 5 GND Black 6 +5 VDC Red 7 GND Black 8 PS_PWRGOOD* Gray 9 P5AUX Purple 10 +12 VDC Yellow 11 +12 VDC Yellow 12 +3.3 VDC Orange 13 (optional) +3.3VDC/SE* Orange 14 - 12 VDC* Blue 15 GND Black [...]

 DC Power Connector P2  DC Power Connectors P3  DC Power Connector P5 Back to Contents Page   Pin Number  Signal Name  18 - AWG Wire 1 GND Black 2 GND Black 3 +12 VDC Yellow 4 +12 VDC Yellow  Pin Number  Signal name  18 - AWG Wire 1 +3.3 VDC Orange 2 GND Black 3 +5 VDC Red 4 GND Black 5 +12 VDC Yellow  Pin Number ?[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Removing the Computer Cover  Removing the Computer Cover    1. Follow the procedures in Before You Begin .  2. If you have installed a padlock through the padlock ring on the back panel, remove the padlock.  3. Locate the cover release latch shown in th[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Small Form Factor Computer Specifications  Small Form Factor Computer Specifications  Microprocessor Microprocessor type Intel ® Pentium ® 4, Pentium ® D, Celeron ® , orCore™ processor Internal cache Atleast512KBpipelined - burst, e[...]

Bus type PCI 2.3 PCI Express 1.0A SATA 1.0A and 2.0 USB 2.0 Bus speed PCI: 133 MB/s PCI Express x16: 8 GB/s bidirectional speed SATA: 1.5 Gbps and 3.0 Gbps USB: 480 Mbps Cards: low - profile cards supported PCI: connector one connector size 120 pins connector data width (maximum) 32 bits PCI Express: connector one x16 power 25 W (maximum) connector[...]

Back to Contents Page  Power control push button Power light green light — blinking green indicates sleep mode; solid green indicates power - on state. amber light — blinking amber indicates a problem with an installed device; solid amber indicates an internal power problem (see Power Problems ). Hard - drive access light green Link light so[...]

Dell™OptiPlex™745User'sGuide Notes, Notices, and Cautions IfyoupurchasedaDell™nSeriescomputer,anyreferencesinthisdocumenttoMicrosoft ® Windows ® operating systems are not applicable. Information in this document is subject to change without notice. © 2006DellInc.Allr[...]

Back to Contents Page  Small Form Factor Computer Dell™OptiPlex™745User'sGuide  About Your Small Form Factor Computer  Inside Your Computer  About Your Small Form Factor Computer  Front View 1 USB 2.0 connectors (2) Use the front USB connectors for devices that you connect occasionally, such as joysticks or[...]

 Back View  Back - Panel Connectors 10 3.5 - inch drive bay Can contain an optional floppy drive or optional media card reader. 11 5.25 - inch drive bay Can contain an optical drive. Insert a CD or DVD (if supported) into this drive. 1 card slots Access connectors for any installed PCI and PCI Express cards. 2 back - panel connectors Plug ser[...]

 Inside Your Computer   indicates that the network cable has been securely attached.  NOTE: Do not plug a telephone cable into the network connector. On computers with a network connector card, use the connector on the card. It is recommended that you use Category 5 wiring and connectors for your network. If you must use Category 3 wiri[...]

 System Board Components Back to Contents Page  1 drive - release latch 4 hard drive 2 optical drive 5 system board 3 power supply and fan 6 heat sink and blower assembly 1 internal speaker connector (INT_SPKR) 11 intrusion switch connector (INTRUDER) 2 processor connector (CPU) 12 internal USB connector (USB) 3 processor power connector (12V[...]

Back to Contents Page  Reinstalling Drivers and the Operating System Dell™OptiPlex™745User'sGuide  Drivers  Using Microsoft ® Windows ® XP System Restore  Reinstalling Microsoft Windows XP   Drivers  What Is a Driver? A driver is a program that controls a device such as a printer, mouse, or[...]

 1. Click the Start button and click Control Panel .  2. Under Pick a Category , click Performance and Maintenance .  3. Click System .  4. In the System Properties window, click the Hardware tab.  5. Click Device Manager .  6. Right - click the device for which the new driver was installed and click Properties .  7. Click the [...]

Restoring the Computer to an Earlier Operating State  1. Click the Start button, point to All Programs ® Accessories ® System Tools , and then click System Restore .  2. Ensure that Restore my computer to an earlier time is selected and click Next .  3. Click a calendar date to which you want to restore your computer. The Select a Restor[...]

If you are considering reinstalling the Windows XP operating system to correct a problem with a newly installed driver, first try using Windows XP Device Driver Rollback (see Using Windows XP Device Driver Rollback ). If Device Driver Rollback does not resolve the problem, then use System Restore to return your operating system to the operating sta[...]

 9. If the Modem Dialing Information screen appears, enter the requested information and click Next .  10. Enter the date, time, and time zone in the Date and Time Settings window, and click Next .  11. If the Networking Settings screen appears, click Typical and click Next .  12. If you are reinstalling Windows XP Professional and you [...]

Back to Contents Page  Solving Problems Dell™OptiPlex™745User'sGuide  Troubleshooting Tips Follow these tips when you troubleshoot your computer: l  If you added or removed a part before the problem started, review the installation procedures and ensure that the part is correctly installed. l  If a peripheral device[...]

 Drive Problems   Fill out the Diagnostics Checklist as you complete these checks.  Optical drive problems  Testthegraphicscard —  1.  Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds, and then remove the computer cover (see the appropriate "Removing t[...]

 Problems writing to a CD/DVD - RW drive  Hard drive problems  E- Mail, Modem, and Internet Problems    Keyboard Problems   Checkthespeakersandsubwoofer —  See Sound and Speaker Problems .  Closeotherprograms —  The CD/DVD - RW drive must receive a steady stream of data when writing[...]

 Fan Problems    Lockups and Software Problems   The computer does not start up  The computer stops responding  A program stops responding Checkthekeyboardcable —  l  Ensure that the keyboard cable is firmly connected to the computer. l  Shut down the computer, reconnect the keyboard cable as shown [...]

 A program crashes repeatedly  A solid blue screen appears  Other software problems  Media Card Reader Problems 1.  Press <Ctrl><Shift><Esc> simultaneously. 2.  Click Applications . 3.  Click the program that is no longer responding. 4.  Click End Task . NOTE: Software usually includes installation instruct[...]

 Memory Problems Fill out the Diagnostics Checklist as you complete these checks.   Mouse Problems  media.  FlexBay device is Disabled — There is a FlexBay disable option in the BIOS setup that appears only when the FlexBay device is installed. If the FlexBay device is physically installed, but it is not running, check to see if it[...]

 Network Problems Fill out the Diagnostics Checklist as you complete these checks.   Power Problems Fill out the Diagnostics Checklist as you complete these checks.   Reinstall the mouse driver — See Reinstalling Drivers and Utilities .  Run the Dell Diagnostics — See Dell Diagnostics .  Check for software and hardware conf[...]

 Printer Problems Fill out the Diagnostics Checklist as you complete these checks.   Restoring Default Settings  The computer is receiving electrical power, but an internal power problem might exist. l  Ensure that the voltage selection switch is set to match the AC power at your location (if applicable). l  Ensure that the proces[...]

 Serial or Parallel Device Problems Fill out the Diagnostics Checklist as you complete these checks.   Sound and Speaker Problems Fill out the Diagnostics Checklist as you complete these checks.   No sound from speakers CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Prod[...]

 No sound from headphones  Video and Monitor Problems Fill out the Diagnostics Checklist as you complete these checks.   If the screen is blank On . Exit system setup and restart your computer. If you have installed an audio card: Enter system setup and ensure that Integrated Audio is set to Off . Ensure that your speaker is connected t[...]

 If the screen is difficult to read Back to Contents Page  Check the diagnostic lights — See Diagnostic Lights .  Checkthecardsetting — Enter system setup (see Entering System Setup ) and ensure that Primary Video option is set correctly. Exit system setup and restart your computer.  Run the monitor self - test  ?[...]

Back to Contents Page  Chassis Intrusion Switch Dell™OptiPlex™745User'sGuide  Removing the Chassis Intrusion Switch  Replacing the Chassis Intrusion Switch  Resetting the Chassis Intrusion Detector   Removing the Chassis Intrusion Switch  1. Follow the procedures in Before You Begin .  2. Discon[...]

 Small Form Factor Computer  Ultra Small Form Factor Computer  Replacing the Chassis Intrusion Switch[...]

 1. Gently slide the chassis intrusion switch into its slot and reconnect the cable to the system board.  2. Replace the computer cover (see Replacing the Computer Cover ).  3. If you are using a computer stand, attach it to the computer.  Resetting the Chassis Intrusion Detector  1. Turn on (or restart) your computer.  2. When[...]

Back to Contents Page  Replacing the System Board Dell™OptiPlex™745User'sGuide  Removing the System Board: Mini Tower, Desktop, Small Form Factor, and Ultra - Small Form Factor Computers  1. Follow the procedures in Before You Begin .  2. Remove any components that restrict access to the system board (optical drive([...]

 Small Form Factor System Board Screws  Ultra Small Form Factor System Board Screws 1 desktop system board 2 screws (10) 1 small form factor system board 2 screws (8)[...]

Place the system board assembly that you just removed next to the replacement system board to ensure it is identical.  Replacing the System Board: Mini Tower, Desktop, Small Form Factor and Ultra - Small Form Factor Computers  1. Gently align the board into the chassis and slide it toward the back of the computer.  2. Replace the screws on[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Notes, Notices, and Cautions IfyoupurchasedaDell™nSeriescomputer,anyreferencesinthisdocumenttoMicrosoft ® Windows ® operating systems are not applicable. Information in this document is subject to change without notice. © 20[...]

Back to Contents Page  Mini Tower Computer Dell™OptiPlex™745User'sGuide  About Your Mini Tower Computer  Inside Your Computer  About Your Mini Tower Computer  Front View 1 5.25 - inch drive bay Can contain an optical drive. Insert a CD or DVD (if supported) into this drive. 2 3.5 - inch drive bay Can contai[...]

 Back View  Back - Panel Connectors l  Blinking or solid amber — See Power Problems . To exit from a power - saving mode, press the power button or use the keyboard or the mouse if it is configured as a wake device in the Windows Device Manager. For more information about sleep modes and exiting from a power - saving mode, see Power Mana[...]

1 parallel connector Connect a parallel device, such as a printer, to the parallel connector. If you have a USB printer, plug it into a USB connector.  NOTE: The integrated parallel connector is automatically disabled if the computer detects an installed card containing a parallel connector configured to the same address. For more information, s[...]

 Inside Your Computer    System Board Components CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide . CAUTION: To avoid electrical shock, always unplug your computer from the electrical outlet before removing the computer cover. NOTICE: Be careful when[...]

Back to Contents Page  3 processor power connector (12VPOWER) 13 PCI Express x16 connector (SLOT1) 4 memory module connectors (DIMM_1, DIMM_2, DIMM_3, DIMM_4) 14 PCI Express x1 connector (SLOT4) 5 RTC reset jumper (RTCRST) 15 PCI connector (SLOT2) 6 password jumper (PSWD) 16 PCI connector (SLOT3) 7 SATA drive connectors (SATA0, SATA1, SATA4, SAT[...]

Back to Contents Page  Troubleshooting Tools and Utilities Dell™OptiPlex™745User'sGuide  Dell Diagnostics  System Lights  Diagnostic Lights  Beep Codes  Error Messages  Resolving Software and Hardware Incompatibilities  Dell Diagnostics   When to Use the Dell Diagnostics If you ex[...]

 5. Select the Boot from CD - ROM option from the menu that appears.  6. Type 1 to start the Drivers and Utilities CD menu.  7. Type 2 to start the Dell Diagnostics.  8. Select Run the 32 Bit Dell Diagnostics from the numbered list. If multiple versions are listed, select the version appropriate for your computer.  9. When the Dell D[...]

 Diagnostic Lights  To help you troubleshoot a problem, your computer has four lights labeled "1," "2," "3," and "4" on the front or back panel. The lights can be off or green. When the computer starts normally, the patterns or codes on the lights change as the boot process completes. If the POST portio[...]

 Beep Codes Your computer might emit a series of beeps during start - up if the monitor cannot display errors or problems. This series of beeps, called a beep code, identifies a problem. One possible beep code (code 1 - 3 - 1) consists of one beep, a burst of three beeps, and then one beep. This beep code tells you that the computer encountered [...]

 Error Messages Fill out the Diagnostics Checklist as you complete these checks.  If the message is not listed, see the documentation for the operating system or the program that was running when the message appeared. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Informa[...]

Hard - diskconfigurationerror —   Hard - diskcontrollerfailure —   Hard - diskdrivefailure —   Hard - diskdrivefailure —  See Drive Problems .  Insertbootablemedia —  Insert a bootable floppy disk or CD.  Invalid configuration information - please[...]

 Resolving Software and Hardware Incompatibilities Operatingsystemnotfound —  Contact Dell (see Contacting Dell ).  PlugandPlayConfigurationError —  1.  Turn your computer off, unplug it from the electrical outlet, and then remove all but one of the cards. 2.  Plug in your computer and reboo[...]

If a device is either not detected during the operating system setup or is detected but incorrectly configured, you can use Device Manager or the Hardware Troubleshooter to resolve the incompatibility.  Microsoft ® Windows ® XP To resolve incompatibilities using Device Manager:  1. Click the Start button and click Control Panel .  2. Cli[...]

Back to Contents Page  Ultra Small Form Factor Computer Dell™OptiPlex™745User'sGuide  About Your Ultra Small Form Factor Computer  Inside Your Computer  Connecting the Power Adapter  Badge  About Your Ultra Small Form Factor Computer  Front View NOTICE: Do not place your monitor on the computer.[...]

 Side View  Back View  Back - Panel Connectors 1 vents The vents located on each side of the computer help prevent your computer from overheating. To ensure proper ventilation, do not block these cooling vents. 1 diagnostic lights See Diagnostic Lights for a description of light codes that can help you troubleshoot problems with your compu[...]

 Connecting a VGA Monitor If you have a VGA monitor, plug the adapter cable into the white DVI display connector and connect the monitor cable to the adapter.  Connecting Two Monitors Use the cable adapter to connect a VGA monitor and a DVI monitor to the DVI - I connector on the back panel. When you connect two monitors, the driver will dete[...]

 System Board Components  Cable Cover (Optional)  Attaching the Cable Cover  1 fan shroud/ heat sink assembly 4 hard drive 2 speaker (optional) 5 security cable slot 3 memory modules (2) 6 chassis intrusion switch 1 fan connector (FAN_FRONT) 8 clear CMOS jumper (RTCRST) 2 internal speaker connector (INT_SPKR) 9 password jumper (PSWD) 3 [...]

 1. Ensure that all external device cables are threaded through the hole in the cable cover.  2. Connect all device cables to the connectors on the back of the computer.  3. Hold the bottom piece of the cable cover and align the four tabs with the four slots on the computer's back panel.  4. Insert the tabs into the slots and slide[...]

 3. If your AC power cable has a green ground wire for connection to an electrical outlet, connect the metal ground connector to the grounding source on the outlet (see the following illustration): a.  Loosen the grounding source. b.  Slide the metal ground connector behind the grounding source, and then tighten the grounding source.  4[...]

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Back to Contents Page Dell™OptiPlex™745User'sGuide  Module Bay  Module Bay  You can install a Dell ™ portable device such as a floppy drive, optical drive, or second hard drive in the module bay. Your Dell computer ships with either an optical drive or an airbay (filler blank) installed in the module bay. You can [...]

 3. Press the device latch release so that the latch release pops out.  4. Pull the device by the latch release to remove the device from the module bay.  5. Slide the new device into the module bay.  6. If desired, you may lock the new device in the module bay by moving the module locking switch to the locked position.  7. If you re[...]

 1. If a device is installed in the module bay, double - click the Safely Remove Hardware icon on the taskbar.  2. Click the device you want to eject.  3. When a computer message indicates that you can remove the device, unplug the device from the computer.  4. Slide the new device into the module bay.  Securing a Device in the Modul[...]

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Back to Contents Page Dell™OptiPlex™745User'sGuide  Processor  Processor    1. Follow the procedures in Before You Begin .  2. Remove the fan shroud by lifting the fan shroud up and away from the computer.   3. Remove the heat sink. a.  Remove the memory module closest to the heat sink (see Install[...]

c.  Gently lift the heat sink from the processor. d.  Lay the heat sink down on its top, with the thermal grease facing upward.  4. Pull the release lever straight up until the processor is released, and then remove the processor from the socket.  5. Unpack the new processor, being careful not to touch the underside of the processor. ?[...]

If you are installing a processor replacement kit from Dell, return the processor to Dell in the same package in which your replacement kit was sent.  11. Clean the thermal grease from the bottom of the heat sink.  12. Apply the new thermal grease to the top of the processor.  13. Place one end of the heat sink under the tab on the retenti[...]

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Back to Contents Page  Drives Dell™OptiPlex™745User'sGuide  Hard Drive  Replacing a Hard - Drive Fan Your computer supports: l  One SATA (serial ATA) hard drive l  One optional D - module optical drive, second hard drive, or floppy drive in the module bay  General Installation Guidelines A SATA hard driv[...]

 Connecting and Disconnecting Drive Cables When connecting and disconnecting a SATA data cable, hold the cable by the black connector at each end. When removing a cable with a pull - tab, grasp the colored pull - tab and pull until the connector detaches.  Hard Drive    Installing a Hard Drive  1. If you are installing a new drive[...]

 6. Remove the data and power cables from the drive connectors.  7. Remove the drive rails from the existing hard drive, and attach the drive rails to the replacement hard drive.  8. Attach the data and power cables to the hard drive connectors, ensuring that the connectors are properly oriented before connecting them.  9. Slide the har[...]

 10. Replace the computer cover (see Replacing the Computer Cover ).  11. Replace the cable cover, if used. See the documentation that came with the drive for instructions on installing any software required for drive operation.  12. Reboot the computer.  13. Partition and logically format your drive before you proceed to the next step.[...]

 4. To replace the hard - drive fan: a.  Align its four side tabs and release tab with the five corresponding slots in the hard - drive bracket. b.  Slide the release tab beneath the metal housing covering its slot and as you slide the fan towards the rear of the computer, the other four tabs should slide into place. Back to Contents Page [...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Removing the Computer Cover  Removing the Computer Cover   1. Follow the procedures in Before You Begin .  2. If applicable, remove the cable cover, (see Cable Cover (Optional) ).  3. Remove the computer cover: a.  Rotate the cover release knob in a clo[...]

Back to Contents Page Dell™OptiPlex™745User'sGuide  Ultra Small Form Factor Computer Specifications  Ultra Small Form Factor Computer Specifications  Microprocessor Microprocessor type Intel ® Pentium ® 4, Pentium ® D, Celeron ® , orCore™ processor Internal cache Atleast512KBpipeline[...]

Drives Externally accessible one D - module bay for an optical drive, second hard drive, or floppy drive Internally accessible one bay for a 1 - inch - high hard drive  Connectors External connectors: Serial 9- pin connector; 16550C - compatible Parallel 25 - hole connector (bidirectional) Video 28 - hole DVI connector Network adapter RJ45 conne[...]

Back to Contents Page  computer is unplugged. Wattage 220W Heat dissipation 751BTU/hr NOTE: Heat dissipation is calculated based upon the power supply rating. Voltage auto - sensing power supplies — 90 to 135 V at 50/60 Hz;180to265Vat50/60Hz Backup battery 3- V CR2032 lithium coin cell  Physical Without cable cov[...]

Dell™OptiPlex™745User'sGuide Notes, Notices, and Cautions IfyoupurchasedaDell™nSeriescomputer,anyreferencesinthisdocumenttoMicrosoft ® Windows ® operating systems are not applicable. Information in this document is subject to change without notice. © 2006DellInc.Allr[...]

Back to Contents Page  Warranty Dell™OptiPlex™745User'sGuide Dell Inc. ("Dell") manufactures its hardware products from parts and components that are new or equivalent to new in accordance with industry - standard practices. For information about the Dell warranty for your computer, see the Product Information Guid[...]