Page 1 Dell™ OptiPlex™ 745 Systems User's Guide Mini Tower Computer Desktop Computer Small Form Factor Computer Ultra Small Form Factor Computer ...
Page 2: Advanced Features
"pre-operating system" or "operating system-absent" state. RMCP messages can be sent to instruct a client computer to start up, shut down, or restart. For more information about Dell's ASF implementation, see the ASF User's Guide and the ASF Administrator's Guide, which are available on the Dell Support website at support.dell.com.
Page 3: Physical Security
OpenManage Client Instrumentation, see the Dell OpenManage Client Instrumentation User's Guide available on the Dell Support website at support.dell.com. With Dell Client Connector Utility (DCCU) you can change the state of your computer by, for example, updating or configuring its BIOS or shutting it down remotely.
Page 4: Trusted Platform Module (Tpm)
To secure your TPM data and encryption keys, follow the backup procedures documented in the Archive and Restore section of the EMBASSY Security Center help file. In the event of these backups being incomplete, lost, or damaged, Dell will be unable to assist in the recovery of encrypted data.
Page 5: Computer Tracking Software
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. NOTE: Computer tracking software may not be available in certain countries.
Page 6: Typing Your System Password
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 to Locked: Type the password and press <Enter>.
Page 7: Disabling A Forgotten Password And Setting A New Password
NOTE: If the two passwords are different, the administrator password can be used as an alternate system password. However, the system password cannot be used in place of the administrator password. 1. Enter system setup (see Entering System Setup) and verify that Admin Password is set to Not Set. ...
Page 8: System Setup Screens
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 screen displays current or changeable configuration information for your computer. Information on the screen is divided into three areas: the options list, active options field, and key functions.
Page 9 Onboard Devices 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 Integrated NIC 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.
Page 10 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 When an administrator password is being used, allows the user access to modify system setup settings. Enter the administrator Unlock Setup password at the prompt to unlock system setup.
Page 11: Changing Boot Sequence For The Current Boot
Changing Boot Sequence for the Current Boot You can use this feature, for example, to tell the computer to boot from the CD drive so that you can run the Dell Diagnostics on the Drivers and Utilities CD, but you want the computer to boot from the hard drive when the diagnostic tests are complete. You can also use this feature to restart your computer to a USB device such as a floppy drive, memory key, or CD drive.
Page 12: Booting To A Usb Device
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.
Page 13: 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). jumpered unjumpered Clearing Forgotten Passwords...
Page 14: Clearing Cmos Settings
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: This process erases both the system and administrator passwords. 1. Follow the procedures in Before You Begin. ...
Page 15: Power Management
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." NOTE: If your system has a card in the PCI Express x16 slot and you add a peripheral that does not support suspend (S3), you system will not be able to enter stand-by.
Page 16: Replacing The Battery
Back to Contents Page Battery Dell™ OptiPlex™ 745 User's Guide Replacing the Battery Replacing the Battery CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
Page 17 1 system battery 2 positive side of battery connector 3 battery socket tab 4 battery socket NOTICE: To avoid damage to the battery connector, you must firmly support the connector while replacing the battery. 5. Install the new system battery. a.
Page 18: Before You Begin
Hold a component such as a processor by its edges, not by its pins. NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not covered by your warranty.
Page 19 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)).
Page 20: Cleaning Your Computer
Back to Contents Page Cleaning Your Computer Dell™ OptiPlex™ 745 User's Guide Computer, Keyboard, and Monitor Mouse Floppy Drive CDs and DVDs CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Page 21: Cds And Dvds
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 NOTICE: Always use compressed air to clean the lens in the optical drive, and follow the instructions that come with the compressed-air product. Never touch the lens in the drive.
Page 22: About Your Desktop Computer
If your operating system has ACPI enabled, when you press the power button the computer will perform an operating system shutdown. Dell badge This badge can be rotated to match the orientation of your computer. To rotate, place fingers around the outside of the badge, press firmly, and turn the badge.
Page 23: Back View
10 3.5-inch drive Can contain an optional floppy drive or optional Media Card Reader. 11 5.25-inch Can contain an optical drive. Insert a CD or DVD (if supported) into this drive bay drive. Back View 1 card slots Access connectors for any installed PCI and PCI Express cards. 2 back-panel Plug serial, USB, and other devices into the appropriate connectors (see connectors...
Page 24: 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.
Page 25: System Board Components
2 power supply 6 heat sink assembly 3 optional chassis-intrusion switch 7 front I/O panel 4 system board System Board Components internal speaker (INT_SPKR) 11 intrusion switch connector (INTRUDER) processor connector (CPU) 12 battery socket (BATT) processor power connector (12VPOWER) 13 PCI Express x16 connector (SLOT1) memory module connectors (DIMM_1, DIMM_2,...
Page 26: Notes, Notices, And Cautions
ENERGY STAR guidelines for energy efficiency. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
Page 27: Pci Cards
You can do so by touching an unpainted metal surface on the computer chassis. Your Dell™ computer supports a serial port adapter and provides the following slots for PCI and PCI Express cards: Two low-profile PCI card slots One low-profile PCI Express x16 card slot NOTE: Your Dell computer uses only PCI and PCI Express slots. ISA cards are not supported. PCI Cards Installing an Expansion Card If you are replacing an expansion card, remove the current driver for the card from the operating system.
Page 28 PCI Express x16 card lever securing slot (not all cards) securing tab PCI Express x16 card connector 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. ...
Page 29 fully seated card not fully seated card bracket within slot bracket caught outside of slot 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.
Page 30: Removing A Pci Card
card-retention latch release tab serial port adapter bracket serial port adapter connector serial port adapter system board connector (SER2) 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.
Page 31: Installing A Pci Card In The Riser-Card Cage
release tab card-edge connector card-retention latch card connector card 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. PCI Express x16 card lever securing slot (not all cards)
Page 32 b. Gently pull on the handle and lift the riser-card cage up and away from the computer. riser-card cage handle 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. Grasp the card by its corners, and ease it out of its connector.
Page 33: Removing A Pci Card From The Riser-Card Cage
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. riser-card cage riser cards (2) slots...
Page 34 riser-card cage handle 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. ...
Page 35 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 ...
Page 36: Removing The Processor
Back to Contents Page Dell™ OptiPlex™ 745 User's Guide Processor Processor CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
Page 37: Installing The Processor
1 center cover latch 2 processor cover 3 processor 4 socket 5 release lever NOTICE: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket. ...
Page 38 1 processor cover 6 release lever 2 tab 7 front alignment-notch 3 processor 8 socket and processor pin-1 indicator 4 processor socket 9 rear alignment-notch 5 center cover latch NOTICE: To avoid damage, ensure that the processor aligns properly with the socket, and do not use excessive force when you install the processor. ...
Page 39 1 heat sink assembly 2 heat-sink assembly bracket 3 captive screw housing (2) 12. Replace the computer cover (see Replacing the Computer Cover). Back to Contents Page ...
Page 40 If you will be operating your computer without an optical drive or a 3.5-inch device (floppy drive or media card reader) installed, the appropriate drive-bay insert must be installed in place of the drive. Contact Dell if you need a drive-bay insert.
Page 41: Removing An Optical Drive
If you will be operating your computer without an optical drive or a 3.5-inch device (floppy drive or Media Card Reader) installed, the appropriate drive-bay insert must be installed in place of the drive. Contact Dell if you need a drive-bay insert.
Page 42: Installing An Optical Drive
1 optical-drive insert 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.
Page 43 Cover). 8. Update your configuration information by setting the appropriate Drive option (0 or 1) under Drives. See System Setup for more information. 9. Verify that your computer works correctly by running the Dell Diagnostics (see Dell Diagnostics).
Page 44: Floppy Drive And Media Card Reader
If you will be operating your computer without an optical drive or a 3.5-inch device (floppy drive or media card reader) installed, the appropriate drive-bay insert must be installed in place of the drive. Contact Dell if you need a drive-bay insert.
Page 45 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.
Page 46: Removing A Hard Drive
9. Enter system setup and set the Diskette Drive option to enable your new floppy drive (see System Setup). 10. Verify that your computer works correctly by running the Dell Diagnostics (see Dell Diagnostics). Hard Drive CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Page 47 1. Check the documentation for the drive to verify that it is configured for your computer. NOTICE: To avoid damage to the drive, do not set it on a hard surface. Instead, set the drive on a surface, such as a foam pad, that will sufficiently cushion it.
Page 48 14. Partition and logically format your drive before you proceed to the next step. For instructions, see the documentation that came with your operating system. 15. Test the hard drive by running the Dell Diagnostics (see Dell Diagnostics). ...
Page 49: Removing The I/O Panel
Back to Contents Page Dell™ OptiPlex™ 745 User's Guide I/O Panel I/O Panel Removing the I/O Panel CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
Page 50 ...
Page 51: Replacing The Power Supply
Back to Contents Page Dell™ OptiPlex™ 745 User's Guide Power Supply Power Supply Replacing the Power Supply CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
Page 52: Dc Power Connectors
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 ...
Page 53 +5 VDC +5 VDC Black *Use 22-AWG wire instead of 18-AWG wire. DC Power Connector P2 Pin Number Signal Name 18-AWG Wire Black Black +12 VDC Yellow +12 VDC Yellow DC Power Connector P3 ...
Page 54 Pin Number Signal name 18-AWG Wire +3.3 VDC Orange Black +5 VDC Black +12 VDC Yellow Back to Contents Page ...
Page 55 Back to Contents Page Dell™ OptiPlex™ 745 User's Guide Removing the Computer Cover Removing the Computer Cover CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the computer cover.
Page 56: Desktop Computer Specifications
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-back SRAM Memory Type 533, 667, or 800 MHz DDR2 SDRAM NOTE: 2-GB 800-MHz memory modules are not supported.
Page 57 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...
Page 58 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 card 5-pin connector PCI 2.3...
Page 59 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 bottom half-sine pulse with a change in velocity of 50.8 cm/sec (20 inches/sec) Storage...
Page 60: Fcc Notices (U.s. Only)
2. This device must accept any interference received, including interference that may cause undesired operation. NOTICE: The FCC regulations provide that changes or modifications not expressly approved by Dell Inc. could void your authority to operate this equipment. These limits are designed to provide reasonable protection against harmful interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation.
Page 61: Finding Information
This document may be optional and may not ship with your How to remove and install parts computer. NOTE: This document is available as a PDF at support.dell.com. Warranty information Dell™ Product Information Guide Terms and Conditions (U.S. only) Safety instructions Regulatory information Ergonomics information...
Page 62 DSS utility. DSS provides critical updates for your operating system and support for Dell™ 3.5-inch USB floppy drives, Intel® processors, optical drives, and USB devices. DSS is necessary for correct operation of your Dell computer. The software automatically detects your computer and operating system and installs the updates appropriate for your configuration.
Page 63 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 ...
Page 64: Getting Help
Dell's Express Service Code system may not be available in all countries. When prompted by Dell's automated telephone system, enter your Express Service Code to route the call directly to the proper support personnel. If you do not have an Express Service Code, open the Dell Accessories folder, double-click the Express Service Code icon, and follow the directions.
Page 65: Problems With Your Order
Product Information If you need information about additional products available from Dell, or if you would like to place an order, visit the Dell website at www.dell.com. For the telephone number to call for your region or to speak to a sales specialist, see Contacting Dell.
Page 66: Before You Call
NOTE: In certain countries, support specific to Dell™ XPS™ computers is available at a separate telephone number listed for participating countries. If you do not see a telephone number listed that is specific for XPS computers, you may contact Dell through the support number listed and your call will be routed appropriately. When you need to contact Dell, use the electronic addresses, telephone numbers, and codes provided in the following table. If you need assistance in determining which codes to use, contact a local or an international operator.
Page 67 International Access Code: Home/Small Business Customer Care 0820 240 530 14 Preferred Accounts/Corporate Customer Care 0820 240 530 16 Country Code: 43 Support for XPS 0820 240 530 81 City Code: 1 Home/Small Business Support for all other Dell computers 0820 240 530 17 Preferred Accounts/Corporate Support 0660 8779 Switchboard 0820 240 530 00 Bahamas General Support toll-free: 1-866-278-6818...
Page 68 Country Code: 420 Technical Fax 22537 2728 Switchboard 22537 2711 Website: support.euro.dell.com Technical Support for XPS 7010 0074 Technical Support for all other Dell computers 7023 0182 Denmark (Copenhagen) Customer Care (Relational) 7023 0184 International Access Code: 00 Home/Small Business Customer Care 3287 5505 Switchboard (Relational) 3287 1200...
Page 69 0207 533 533 0207 533 530 Website: support.euro.dell.com Home and Small Business Technical Support for XPS 0825 387 129 Technical Support for all other Dell computers 0825 387 270 Customer Care 0825 823 833 Switchboard 0825 004 700 France (Paris) (Montpellier) Switchboard (calls from outside of France) 04 99 75 40 00...
Page 70 0120-198-226 Technical Support outside of Japan (Dimension and Inspiron) 81-44-520-1435 Technical Support (Dell Precision, OptiPlex, and Latitude) toll-free:0120-198-433 Technical Support outside of Japan (Dell Precision, OptiPlex, and Latitude) 81-44-556-3894 Japan (Kawasaki) Technical Support (PDAs, projectors, printers, routers) toll-free: 0120-981-690...
Page 71 Transaction Sales (Xiamen, China) 29 693 115 Website: support.ap.dell.com Malaysia (Penang) Technical Support (Dell Precision, OptiPlex, and Latitude) toll-free: 1 800 880 193 Technical Support (Dimension, Inspiron, and Electronics and Accessories) toll-free: 1 800 881 306 International Access Code: 00 Technical Support (PowerApp, PowerEdge, PowerConnect, and PowerVault) toll-free: 1800 881 386...
Page 72 Singapore or Malaysia only. Singapore (Singapore) Website: support.ap.dell.com International Access Code: Technical Support (Dimension, Inspiron, and Electronics and Accessories) toll-free: 1 800 394 7430 Technical Support (OptiPlex, Latitude, and Dell Precision) toll-free: 1 800 394 7488 Country Code: 65 Technical Support (PowerApp, PowerEdge, PowerConnect, and PowerVault) toll-free: 1 800 394 7478 Customer Care toll-free: 1 800 394 7430 (option 6)
Page 73 E-mail: Tech_support_central_Europe@dell.com Switzerland (Geneva) Technical Support for XPS 0848 33 88 57 Technical Support (Home and Small Business) for all other Dell products 0844 811 411 International Access Code: 00 Technical Support (Corporate) 0844 822 844 Country Code: 41 Customer Care (Home and Small Business) 0848 802 202...
Page 74 Software and Peripherals Sales toll-free: 1-800-671-3355 Spare Parts Sales toll-free: 1-800-357-3355 Extended Service and Warranty Sales toll-free: 1-800-247-4618 toll-free: 1-800-727-8320 toll-free: 1-877-DELLTTY Dell Services for the Deaf, Hard-of-Hearing, or Speech-Impaired (1-877-335-5889) U.S. Virgin Islands General Support 1-877-673-3355 Venezuela General Support 8001-3605 Back to Contents Page...
Page 75 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.
Page 76 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 —...
Page 77 ExpressCard — A removable I/O card adhering to the PCMCIA standard. Modems and network adapters are common types of ExpressCards. ExpressCards support both the PCI Express and USB 2.0 standard. Express Service Code — A numeric code located on a sticker on your Dell™ computer. Use the Express Service Code when contacting Dell for assistance. Express Service Code service may not be available in some countries.
Page 78 MB/sec — megabytes per second — One million bytes per second. This measurement is typically used for data transfer ratings. media bay — A bay that supports devices such as optical drives, a second battery, or a Dell TravelLite™ module. memory — A temporary data storage area inside your computer. Because the data in memory is not permanent, it is recommended that you frequently save your files while you are working on them, and always save your files before you shut down the computer.
Page 79 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.
Page 80 — An I/O port often used to connect devices such as a handheld digital device or digital camera to your computer. Service Tag — A bar code label on your computer that identifies your computer when you access Dell Support at support.dell.com or when you call Dell for customer service or technical support.
Page 81 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 resolutions up to 1400 x 1050. system board —...
Page 82 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 data from being changed or destroyed. To write- protect a 3.5-inch floppy disk, slide its write-protect tab to the open position.
Page 83: Ddr2 Memory Overview
Small Form Factor Computer Specifications Ultra Small Form Factor Computer Specifications NOTICE: Before you install new memory modules, download the most recent BIOS for your computer from the Dell Support website at support.dell.com. NOTE: Memory purchased from Dell is covered under your computer warranty.
Page 84: Removing Memory
If you remove your original memory modules from the computer during a memory upgrade, keep them separate from any new modules that you may have, even if you purchased the new modules from Dell. If possible, do not pair an original memory module with a new memory module.
Page 85: Installing Memory
To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. NOTE: Memory purchased from Dell is covered under your computer warranty. 1. Follow the procedures in Before You Begin.
Page 86 Then repeat steps 7, 8, and 9. 11. When the System Memory total is correct, press <Esc> to exit system setup. 12. Run the Dell Diagnostics (see Dell Diagnostics) to verify that the memory modules are operating properly. Back to Contents Page...
Page 87: Notes, Notices, And Cautions
ENERGY STAR guidelines for energy efficiency. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
Page 88: Installing An Expansion Card
4 PCI Express x16 card slot Installing an Expansion Card NOTE: Your Dell computer uses only PCI and PCI Express slots. ISA cards are not supported. NOTE: The serial port adapter for your mini tower computer also includes two PS/2 connectors.
Page 89 1 card retention latch 4 card-edge connector 2 alignment guide 5 card connector 3 card 6 release tab 3. If you are installing a new card, remove the filler bracket to create a card-slot opening. Then continue with step 5. ...
Page 90: Removing An Expansion Card
NOTE: If the card is full-length, insert the end of the card into the card-guide bracket as you lower the card toward its connector on the system board. Insert the card firmly into the card connector on the system board. 1 fully seated card 2 not fully seated card 3 bracket within slot...
Page 91 1 card retention latch 4 card-edge connector 2 alignment guide 5 card connector 3 card 6 release tab 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. ...
Page 92 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. ...
Page 93 Back to Contents Page Dell™ OptiPlex™ 745 User's Guide Processor Processor CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
Page 94 1 center cover latch 2 processor cover 3 processor 4 socket 5 release lever NOTICE: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket. ...
Page 95 1 processor cover 6 release lever 2 tab 7 front alignment-notch 3 processor 8 socket and processor pin-1 indicator 4 processor socket 9 rear alignment-notch 5 center cover latch NOTICE: To avoid damage, ensure that the processor aligns properly with the socket, and do not use excessive force when you install the processor. ...
Page 96: General Installation Guidelines
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: Two SATA (Serial ATA) hard drives One floppy drive or Media Card Reader Two SATA optical drives NOTE: Due to the limited number of drive bays and controllers on this computer, you will not be able to connect all supported devices at once.
Page 97: Power Cable Connectors
1 interface cable connector 2 interface connector 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 the pin-1 end of the connector.
Page 98: Installing A Hard Drive
1 data cable 2 hard-drive system board connector 3 power cable 5. Press in on the blue release tabs on each side of the drive and slide the drive up and out of the computer. 1 hard drive 2 release tabs (2) ...
Page 99 1 hard drive 2 hard-drive bracket 1 hard drive 2 hard-drive bracket 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. ...
Page 100: Adding A Second Hard Drive
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 by running the Dell Diagnostics (see Dell Diagnostics). 15. If the drive you just installed is the primary drive, install your operating system on the hard drive.
Page 101: Drive-Panel Inserts
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. 1 data cable 2 hard-drive system board connector 3 power cable ...
Page 102 1 drive panel 2 release tab 3 drive-panel insert 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. 1 optical-drive panel insert 2 floppy-drive panel insert 3 holder for shoulder screws...
Page 103 Floppy Drive and Media Card Reader CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the computer cover. ...
Page 104 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 Diagnostics (see Dell Diagnostics). Optical Drive ...
Page 105 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.
Page 106 9. Update your configuration information in system setup by setting the appropriate Drive option (0 or 1) under Drives. See System Setup. 10. Verify that your computer works correctly by running the Dell Diagnostics (see Dell Diagnostics). Back to Contents Page...
Page 107 Back to Contents Page Dell™ OptiPlex™ 745 User's Guide I/O Panel Removing the I/O Panel CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
Page 108 Back to Contents Page Dell™ OptiPlex™ 745 User's Guide Power Supply Power Supply Replacing the Power Supply CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
Page 109 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 ...
Page 110 Black +5 VDC +5 VDC +5 VDC Black *Optional wire. Use 22-AWG wire instead of 18-AWG wire. DC Power Connector P2 Pin Number Signal Name 18-AWG Wire Black Black +12 VADC Yellow +12 VADC Yellow DC Power Connectors P3, P5, P8, and P9 ...
Page 111 Pin Number Signal name 18-AWG Wire +12 VBDC White Black Black +5 VDC Back to Contents Page ...
Page 112: Removing The Computer Cover
Back to Contents Page Dell™ OptiPlex™ 745 User's Guide Removing the Computer Cover CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the computer cover.
Page 113: Mini Tower Computer Specifications
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 associative, write-back SRAM Memory Type 533, 667, or 800 MHz DDR2 SDRAM NOTE: 2-GB 800-MHz memory modules are not supported.
Page 114 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: ...
Page 115 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).
Page 116: Microsoft® Windows® Xp Features
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 system provides a Files and Settings Transfer Wizard to move data from a source computer to a new computer. You can transfer data, such as: E-mail messages...
Page 117: Running The Files And Settings Transfer Wizard Without The Operating System Cd
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 your new computer.
Page 118: User Accounts And Fast User Switching
NOTE: For more information about this procedure, search support.dell.com for document #PA1089586 (How Do I Transfer Files From My Old Computer to ® ® My New Dell Computer Using the Microsoft Windows XP Operating System?). NOTE: Access to the Dell™ Knowledge Base document may not be available in some countries. User Accounts and Fast User Switching ...
Page 119: Network Setup Wizard
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.
Page 120: Replacing The Computer Cover
Back to Contents Page Replacing the Computer Cover Dell™ OptiPlex™ 745 User's Guide CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. 1. Ensure that all cables are connected, and fold cables out of the way.
Page 121 Your Dell™ computer supports a serial adapter and provides the following connectors for PCI Express cards. One PCI Express x16 card slot NOTE: Your Dell computer uses only PCI and PCI Express slots. ISA cards are not supported. Your computer supports one PCI Express x16 card. 1 PCI Express x16 card 2 PCI Express x16 card slot If you are installing or replacing a PCI Express card, follow the procedures in the next section.
Page 122 1 PCI Express x16 card 2 lever 3 securing slot (not all cards) 4 securing tab 5 PCI Express x16 card connector 1 fully seated card 2 not fully seated card 3 bracket within slot 4 bracket caught outside of slot ...
Page 123 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 network connector on the back panel of the computer.
Page 124 Back to Contents Page Dell™ OptiPlex™ 745 User's Guide Processor Processor CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
Page 125 1 center cover latch 2 processor cover 3 processor 4 socket 5 release lever NOTICE: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket. ...
Page 126 1 processor cover 6 release lever 2 tab 7 front alignment-notch 3 processor 8 socket and processor pin-1 indicator 4 processor socket 9 rear alignment-notch 5 center cover latch NOTICE: To avoid damage, ensure that the processor aligns properly with the socket, and do not use excessive force when you install the processor. ...
Page 127 1 heat sink assembly 2 heat-sink assembly bracket 3 captive screw in housing (2) 12. Replace the computer cover (see Replacing the Computer Cover). Back to Contents Page ...
Page 128 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: One SATA (serial ATA) drive One floppy drive or Media Card Reader One SATA optical drive...
Page 129: Hard Drive
NOTICE: Inserting a cable incorrectly prevents the drive from operating and could damage the controller, the drive, or both. Power Cable Connectors 1 power cable 2 power input connector 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;...
Page 130 1 securing tabs (2) 2 hard drive 7. Disconnect the power and data cable from the drive. 1 power cable 2 SATA data cable Installing a Hard Drive 1. Check the documentation for the drive to verify that it is configured for your computer. NOTICE: To avoid damage to the drive, do not set it on a hard surface.
Page 131 13. Partition and logically format your drive before you proceed to the next step. For instructions, see the documentation that came with your operating system. 14. Test the hard drive by running the Dell Diagnostics (see Dell Diagnostics).
Page 132 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.
Page 133 2. Lay the computer on its side so that the system board is on the bottom of the inside of the computer. NOTICE: Do not pull the drive out of the computer by the drive cables. Doing so may cause damage to cables and the cable connectors. ...
Page 134 6. See the documentation that came with the drive for instructions on installing any software required for drive operation. 7. Enter system setup and select the appropriate Drive option (see Entering System Setup). 8. Verify that your computer works correctly by running the Dell Diagnostics (see Dell Diagnostics). Floppy Drive and Media Card Reader CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Page 135 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. 1 cable release tab 2 data-cable edge connector ...
Page 136 9. Enter and use the Diskette Drive option to enable your new floppy drive. See the documentation that came with the drive for instructions on installing any software required for drive operation. 10. Verify that your computer works correctly by running the Dell Diagnostics (see Dell Diagnostics).
Page 137 Back to Contents Page Dell™ OptiPlex™ 745 User's Guide I/O Panel I/O Panel Removing the I/O Panel CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the computer cover.
Page 138 Replacing the I/O Panel 1. To replace the I/O panel, follow the removal procedures in the reverse order. 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 ...
Page 139 Back to Contents Page Dell™ OptiPlex™ 745 User's Guide Power Supply Power Supply Replacing the Power Supply CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
Page 140 DC Power Connectors DC Power Connector P1 Pin Number Signal name 18-AWG Wire +3.3 VDC Orange +3.3 VDC Orange Black +5 VDC Black +5 VDC Black PS_PWRGOOD* Gray P5AUX Purple +12 VDC Yellow +12 VDC Yellow +3.3 VDC Orange...
Page 141 DC Power Connector P2 Pin Number Signal Name 18-AWG Wire Black Black +12 VDC Yellow +12 VDC Yellow DC Power Connectors P3 Pin Number Signal name 18-AWG Wire +3.3 VDC Orange Black +5 VDC Black +12 VDC...
Page 142 Back to Contents Page Dell™ OptiPlex™ 745 User's Guide Removing the Computer Cover Removing the Computer Cover CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the computer cover.
Page 143: Small Form Factor Computer Specifications
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, eight-way set associative, write-back SRAM Memory Type 533, 667, or 800 MHz DDR2 SDRAM ...
Page 144 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 connector size 120 pins connector data width (maximum)
Page 145 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).
Page 146: Notes, Notices, And Cautions
ENERGY STAR guidelines for energy efficiency. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
Page 147: About Your Small Form Factor Computer
If your operating system has ACPI enabled, when you press the power button the computer will perform an operating system shutdown. Dell badge Can be rotated to match the orientation of your computer. To rotate, place fingers around the outside of the badge, press firmly, and turn the badge.
Page 148: Back View
10 3.5-inch drive Can contain an optional floppy drive or optional media card reader. 11 5.25-inch Can contain an optical drive. Insert a CD or DVD (if supported) into this drive bay drive. Back View 1 card slots Access connectors for any installed PCI and PCI Express cards. 2 back-panel Plug serial, USB, and other devices into the appropriate connectors (see connectors...
Page 149: 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.
Page 150: System Board Components
drive-release latch hard drive optical drive system board power supply and fan heat sink and blower assembly System Board Components internal speaker connector (INT_SPKR) 11 intrusion switch connector (INTRUDER) processor connector (CPU) 12 internal USB connector (USB) processor power connector (12VPOWER) 13 battery socket (BATT) memory module connectors (DIMM_1, DIMM_2, 14 PCI Express x16 connector...
Page 151: Reinstalling Drivers And The Operating System
A driver acts like a translator between the device and any other programs that use the device. Each device has its own set of specialized commands that only its driver recognizes. Dell ships your computer to you with required drivers already installed—no further installation or configuration is needed. NOTICE: The optional Drivers and Utilities CD may contain drivers for operating systems that are not on your computer.
Page 152: Using The Optional Drivers And Utilities Cd
If this is your first time to use the Drivers and Utilities CD, the Installation window opens to inform you that the CD will begin the installation. Click OK and respond to the installation program prompts to complete the installation. 2. Click Next at the Welcome Dell System Owner screen. 3. Choose the appropriate selections for System Model, Operating System, Device Type, and Topic.
Page 153: Restoring The Computer To An Earlier Operating State
Restoring the Computer to an Earlier Operating State NOTICE: Before you restore the computer to an earlier operating state, save and close any open files and exit any open programs. Do not alter, open, or delete any files or programs until the system restoration is complete. ...
Page 154: Reinstalling Windows Xp
The Operating System CD provides options for reinstalling Windows XP. The options can overwrite files and possibly affect programs installed on your hard drive. Therefore, do not reinstall Windows XP unless a Dell technical support representative instructs you to do so.
Page 155 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. ...
Page 156: Solving Problems
If you have to repeatedly reset time and date information after turning on the computer, or if an incorrect time or date displays during start-up, replace the battery (see Battery). If the battery still does not work properly, contact Dell (see Contacting Dell).
Page 157: Optical Drive Problems
3. Close the computer cover (see Replacing the Computer Cover), reconnect the computer and devices to electrical outlets, and then turn them on. 4. Run the Dell Diagnostics. See Dell Diagnostics. Test the cards — ...
Page 158: E-Mail, Modem, And Internet Problems
Check the speakers and subwoofer — See Sound and Speaker Problems. Problems writing to a CD/DVD-RW drive Close other programs — The CD/DVD-RW drive must receive a steady stream of data when writing. If the stream is interrupted, an error occurs. Try closing all programs before you write to the CD/DVD-RW. ...
Page 159: Fan Problems
Remove keyboard extension cables and connect the keyboard directly to the computer. Test the keyboard — Connect a properly working keyboard to the computer, and try using the keyboard. If the new keyboard works, the original keyboard is faulty. Run the Dell Diagnostics — See Dell Diagnostics. Check for software and hardware conflicts —...
Page 160: Media Card Reader Problems
Use a virus-scanning program to check the hard drive, floppy disks, or CDs Save and close any open files or programs and shut down your computer through the Start menu Run the Dell Diagnostics — If all tests run successfully, the error condition is related to a software problem. See Dell Diagnostics.
Page 161: Memory Problems
See the software documentation for minimum memory requirements. If necessary, install additional memory (see Installing Memory). Reseat the memory modules to ensure that your computer is successfully communicating with the memory (see Memory). Run the Dell Diagnostics (see Dell Diagnostics). ...
Page 162: Network Problems
Reinstall the mouse driver — Reinstalling Drivers and Utilities. Run the Dell Diagnostics — Dell Diagnostics. Check for software and hardware conflicts — Resolving Software and Hardware Incompatibilities. Network Problems Fill out the Diagnostics Checklist as you complete these checks.
Page 163: Printer Problems
The computer is receiving electrical power, but an internal power problem might exist. Ensure that the voltage selection switch is set to match the AC power at your location (if applicable). Ensure that the processor power cable is securely connected to the system board. ...
Page 164: Serial Or Parallel Device Problems
Setup) and ensure that the Serial Port #1 setting (or the Serial Port #2 settings if you have an optional serial port adapter installed) or the LPT Port Mode setting matches the recommended settings. Run the Dell Diagnostics — Dell Diagnostics.
Page 165: No Sound From Headphones
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 to the audio card inputs Run the Dell Diagnostics — Dell Diagnostics. Run the Audio Card Driver Diagnostics, If Applicable —...
Page 166: If The Screen Is Difficult To Read
Check the diagnostic lights — 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 — Check the monitor documentation for more information. ...
Page 167: Removing The Chassis Intrusion Switch
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 CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
Page 168: Replacing The Chassis Intrusion Switch
Small Form Factor Computer Ultra Small Form Factor Computer Replacing the Chassis Intrusion Switch...
Page 169: Resetting The Chassis Intrusion Detector
Resetting the Chassis Intrusion Detector 1. Turn on (or restart) your computer. 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 and try again. ...
Page 170: Replacing The System Board
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. NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer.
Page 171: Ultra Small Form Factor System Board Screws
1 desktop system board 2 screws (10) Small Form Factor System Board Screws 1 small form factor system board 2 screws (8) Ultra Small Form Factor System Board Screws...
Page 172: Replacing The System Board: Mini Tower, Desktop, Small Form Factor And Ultra-Small Form Factor Computers
1 ultra-small form factor system board 2 screws (10) 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 ...
Page 173 ENERGY STAR guidelines for energy efficiency. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
Page 174: About Your Mini Tower Computer
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 5.25-inch Can contain an optical drive. Insert a CD or DVD (if supported) into this drive bay drive.
Page 175 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 Management.
Page 176 1 parallel Connect a parallel device, such as a printer, to the parallel connector. If connector 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.
Page 177 Inside Your Computer 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 opening the computer cover to ensure that you do not accidentally disconnect cables from the system board.
Page 178 processor power connector (12VPOWER) 13 PCI Express x16 connector (SLOT1) memory module connectors (DIMM_1, DIMM_2, 14 PCI Express x1 connector DIMM_3, DIMM_4) (SLOT4) RTC reset jumper (RTCRST) 15 PCI connector (SLOT2) password jumper (PSWD) 16 PCI connector (SLOT3) SATA drive connectors (SATA0, SATA1, SATA4, 17 serial connector (SER2) SATA5) front-panel connector (FNT_PANEL)
Page 179: Troubleshooting Tools And Utilities
When to Use the Dell Diagnostics If you experience a problem with your computer, perform the checks in this section and run the Dell Diagnostics before you contact Dell for technical assistance. It is recommended that you print these procedures before you begin.
Page 180: Dell Diagnostics Main Menu
NOTE: The Service Tag for your computer is located at the top of each test screen. If you contact Dell, technical support will ask for your Service Tag. Your computer's Service Tag is listed in the System Info option in system setup. See System Setup for more information.
Page 181: Diagnostic Lights
If the problem still exists, install a graphics card that you know works and restart the computer. If the problem persists or the computer has integrated graphics, contact Dell (see Contacting Dell). A possible floppy or hard drive failure has Reseat all power and data cables and restart the computer.
Page 182: Beep Codes
If your computer beeps during start-up: 1. Write down the beep code on the Diagnostics Checklist. 2. Run the Dell Diagnostics to identify a more serious cause (see Dell Diagnostics). 3. Contact Dell for technical assistance (see Contacting Dell).
Page 183: Error Messages
Alert! Previous attempts at booting this system have failed at checkpoint [nnnn]. For help in resolving this problem, please note this checkpoint and contact Dell Technical Support — Contact Dell (see Contacting Dell) and report the checkpoint code (nnnn) to the support technician. Alert! Air temperature sensor not detected — For any computer type except the ultra small form-factor computer, ensure that all cables are securely fastened to the I/O panel and to the system board and reboot your computer.
Page 184 Enter system setup and ensure that the computer configuration information for the hard drive is correct (see Entering System Setup). No timer tick interrupt — Run the Dell Diagnostics (see Dell Diagnostics). Non-system disk or disk error — Replace the floppy disk with one that has a bootable operating system or remove the floppy disk from drive A and restart the computer.
Page 185: Resolving Software And Hardware Incompatibilities
WARNING: Dell's Disk Monitoring System has detected that drive [0/1] on the [primary/secondary] EIDE controller is operating outside of normal specifications. It is advisable to immediately back up your data and replace your hard drive by calling your support desk or Dell —...
Page 186 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 To resolve incompatibilities using Device Manager: ...
Page 187: About Your Ultra Small Form Factor Computer
When setting up your computer, secure all cables toward the back of your work area to prevent the cables from being pulled, tangled, or stepped on. NOTE: If you want to orient your computer under a desktop or on a wall surface, use the optional wall-mount bracket. To order this bracket, contact Dell (see Getting Help).
Page 188: Side View
Side View The vents located on each side of the computer help prevent your computer from overheating. To ensure proper ventilation, do not block these 1 vents cooling vents. Back View 1 diagnostic lights Diagnostic Lights for a description of light codes that can help you troubleshoot problems with your computer. 2 computer cover release knob Rotate this knob in a clockwise direction to remove the cover.
Page 189: Connecting A Vga Monitor
network speed to 10 Mbps to ensure reliable operation. network activity The amber light flashes when the computer is transmitting or receiving network data. A high volume of network traffic may make this light light appear to be in a steady "on" state. line-out Use the green line-out connector to attach an amplified speaker set.
Page 190: Cable Cover (Optional)
1 fan shroud/ heat sink assembly 4 hard drive 2 speaker (optional) 5 security cable slot 3 memory modules (2) 6 chassis intrusion switch System Board Components 1 fan connector (FAN_FRONT) clear CMOS jumper (RTCRST) 2 internal speaker connector (INT_SPKR) 9 password jumper (PSWD) 3 system board speaker (BEEP) 10 hard-drive power connector (SATA_PWR)
Page 191: Removing The Cable Cover
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. ...
Page 192 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. 1 grounding source 2 metal ground connector ...
Page 193 ...
Page 194: 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 secure a device in the module bay by two methods: Locking switch (accessed by removing the computer cover)
Page 195 1 module locking switch 3. Press the device latch release so that the latch release pops out. 1 device latch release NOTICE: Do not place any heavy objects on top of the computer. Doing so may bend the chassis and cause difficulty in removing a module device. ...
Page 196: Securing A Device In The Module Bay
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. NOTE: You cannot remove a device if your computer is turned on and the device is locked in the module bay. You must shut down the computer and follow the steps in Installing a Device When Your Computer Is Turned Off to remove a locked device.
Page 197 ...
Page 198 Back to Contents Page Dell™ OptiPlex™ 745 User's Guide Processor Processor CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
Page 199 1 top of heat sink 2 heat sink 3 retention base 4 release lever c. Gently lift the heat sink from the processor. d. Lay the heat sink down on its top, with the thermal grease facing upward. NOTICE: Unless a new heatsink is required for the new processor, reuse the original heat sink assembly when you replace the processor. ...
Page 200 5 center cover latch 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. NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer.
Page 201 ...
Page 202 Back to Contents Page Drives Dell™ OptiPlex™ 745 User's Guide Hard Drive Replacing a Hard-Drive Fan Your computer supports: One SATA (serial ATA) hard drive One optional D-module optical drive, second hard drive, or floppy drive in the module bay General Installation Guidelines NOTE: For information on installing D-module drives, see the documentation that came with your optional device.
Page 203 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 ...
Page 204 1 hard drive 2 drive rails (2) 3 power cable connector 4 data cable connector 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. 1 drive 2 drive rails (2) 3 screws (4)
Page 205: Replacing A Hard-Drive Fan
13. Partition and logically format your drive before you proceed to the next step. For instructions, see the documentation that came with your operating system. 14. Test the hard drive by running the Dell Diagnostics (see Dell Diagnostics). ...
Page 206 1 hard-drive bracket 2 fan release tab 3 fan 4 side tab 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.
Page 207 Back to Contents Page Dell™ OptiPlex™ 745 User's Guide Removing the Computer Cover Removing the Computer Cover CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components.
Page 208: Ultra Small Form Factor Computer Specifications
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 pipelined-burst, eight-way set associative, write-back SRAM Memory Type 533 or 667 MHz DDR2 SDRAM...
Page 209 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 connector two front-panel and five back-panel USB 2.0–...
Page 210 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 cover: ...
Page 211 ENERGY STAR guidelines for energy efficiency. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
Page 212: 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 Guide or separate paper warranty document that shipped with your computer.

This manual is also suitable for:

Optiplex 745

Dell OptiPlex GX745 User'smanual

Quick Links

Troubleshooting

Related Manuals for Dell OptiPlex GX745

Summary of Contents for Dell OptiPlex GX745

This manual is also suitable for:

Table of Contents