Compaq DeskPro EN Series free download

File name Compaq DeskPro EN SM AppA.pdf

appendix A Pin 1 2 3 4 5 6 CONNECTOR PIN ASSIGNMENTS This appendix contains the pin assignments for all external connectors. Some of the connectors may not be used on the computer being serviced. Enhanced Keyboard Connector and Icon Signal Data Unused Ground +5 VDC Clock Unused 6 4 KEY 5 3 2 1 Mouse Connector and Icon Pin 1 2 3 4 5 6 Signal Data Unused Ground +5 VDC Clock Unused 6 4 KEY 5 3 2 1 Ethernet BNC Connector and Icon Pin 1 (Inside) 2 (Outside) Signal Data Ground Compaq Deskpro EN Series of Personal Computers A-1 Parallel Interface Connector and Icon Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18-25 Signal Strobe Data Bit 0 Data Bit 1 Data Bit 2 Data Bit 3 Data Bit 4 Data Bit 5 Data Bit 6 Data Bit 7 Acknowledge Busy Paper End Select Auto Linefeed Error Initialize Printer Select IN Signal Ground 13 12 11 10 9 8 7 6 5 4 3 2 1 25 24 23 22 21 20 19 18 17 16 15 14 Serial Interface Connector and Icon Pin 1 2 3 4 5 6 7 8 9 Signal Carrier Detect Receive Data Transmit Data Data Terminal Ready Signal Ground Data Set Ready Request to Send Clear to Send Ring Indicator 1 6 2 7 3 8 4 9 5 Microphone Connector Connector and Icon (1/8" miniphone) Pin 1 (Inside) 2 (Outside) Signal Data Ground Headphone Connector Connector and Icon (1/8" miniphone) Pin 1 (Inside) 2 (Outside) Signal Data Ground A-2 Connector Pin Assignments Compaq Deskpro EN Series of Personal Computers A-3 Monitor Connector Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Signal Red Analog Green Analog Blue Analog Monitor ID Bit2 Ground Ground Analog Ground Analog Ground Analog Not Connected Ground Monitor ID Bit 0 Bidirectional Data (SDA)* Horizontal Sync Vertical Sync Data Clock (SCL)* 4 3 2 1 10 9 8 7 6 15 14 13 12 11 5 * For DDC support (I2C monitors) Ethernet AUI Connector and Icon 8 15 7 14 6 13 5 12 4 11 3 10 2 9 1 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Signal Ground Negative AUI Differential Collision Positive AUI Differential Collision Negative AUI Differential Transmit Positive AUI Differential Transmit Ground Ground Negative AUI Differential Receive Positive AUI Differential Receive +12V Ground Ground Not Used Not Used Not Used Not Used A-4 Connector Pin Assignments Ethernet RJ-45 Connector and Icon Pin 1 2 3 4 5 6 7 8 Signal (+) Transmit Data (-) Transmit Data (+) Receive Data Unused Unused (-) Receive Data Unused Unused 1 3 5 7 2 4 6 8 USB Connector Connector and Icon Pin 1 2 3 4 Signal VCC - Data + Data Ground 1 2 3 4 External Infrared Transceiver Connector and Icon Pin 1 2 8 5 2 7 4 1 6 3 Signal Transmit Receive Ground 5V Mode Not Used Not Used Not used 3 4 5 6 7 8 Compaq Deskpro EN Series of Personal Computers A-5 IDE/EIDE Drive Cable 39 40 1 2 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Signal RESET GROUND DD7 DD8 DD6 DD9 DD5 DD10 DD4 DD11 DD3 DD12 DD2 DD13 Pin 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Signal DD1 DD14 DD0 DD15 GROUND (KEY) DMARQ GROUND DIOW Ground DIOR GROUND IORDY CSEL Pin 29 30 31 32 33 34 35 36

File name Compaq DeskPro EN SM AppB.pdf

appendix B POWER CORD SET REQUIREMENTS The voltage select switch feature on the computer permits it to operate from any line voltage between 100-120 or 220-240 volts AC. The power cord set received with the computer meets the requirements for use in the country where you purchased the equipment. Power cord sets for use in other countries must meet the requirements of the country where you use the computer. For more information on power cord set requirements, contact your authorized Compaq dealer, reseller, or service provider. General Requirements The requirements listed below are applicable to all countries: 1. The length of the power cord set must be at least 6.00 feet (1.8 m) and a maximum of 9.75 feet (3.0 m). 2. All power cord sets must be approved by an acceptable accredited agency responsible for evaluation in the country where the power cord set will be used. 3. The power cord set must have a minimum current capacity of 10A and a nominal voltage rating of 125 or 250 volts AC, as required by each country's power system. 4. The appliance coupler must meet the mechanical configuration of an EN 60 320/IEC 320 Standard Sheet C13 connector, for mating with appliance inlet on the Switch Box. Compaq Deskpro EN Series of Personal Computers B-1 Country-Specific Requirements Additional requirements specific to a country are shown in parentheses and explained below. Country Australia (1) Austria (1) Belgium (1) Canada (2) Denmark (1) Finland (1) France (1) Germany (1) Notes: (1) The flexible cord must be Type HO5VV-F, 3-conductor, 1.0 mm2 conductor size. Power cord set fittings (appliance coupler and wall plug) must bear the certification mark of the agency responsible for evaluation in the country where it will be used. (2) The flexible cord must be Type SJT or equivalent, No. 18 AWG, 3-conductor. The wall plug must be a two-pole grounding type with a NEMA 5-15P (15A, 125V) or NEMA 6-15P (15A 250V) configuration. (3) The appliance coupler, flexible cord, and wall plug must bear a "T" mark and registration number in accordance with the Japanese Dentori Law. The flexible cord must be Type VCT or VCTF, 3-conductor, 0.75 mm2 conductor size. The wall plug must be a two-pole grounding type with a Japanese Industrial Standard C8303 (15A, 125V) configuration. Accrediting Agency EANSW OVE CEBC CSA DEMKO SETI UTE VDE Country Italy (1) Japan (3) Norway (1) Sweden (1) Switzerland (1) United Kingdom (1) United States (2) Accrediting Agency IMQ JIS NEMKO SEMKO SEV BSI UL B-2 Power Cord Set Requirements

File name Compaq DeskPro EN SM AppC.pdf

appendix C HARD DRIVES Compaq Computer Corporation uses IDE hard disk drives that conform to two different primary/secondary implementations. These are Conner mode and ATA-compatible mode. These two modes are incompatible with one another. Device 0/Device 1 Relationship A device 0/device 1 relationship exists when there are two hard drives connected to a single port. In this situation, one drive must be designated as the device 0 or primary drive and the other as the device 1, or secondary drive. This designation is necessary because both drives cannot work simultaneously. SMART The SMART IDE hard drives for the Compaq Deskpro Personal Computers have built-in drive failure prediction that warns the user or the network administrator of an impending failure or crash of the hard drive. Automatic Soft-Drive Types An automatic soft-drive type is a mechanism where the system ROM and Computer Setup automatically build a soft-drive type to provide support for IDE hard drives that are not in the hard drive parameter table. The soft-drive types are assigned according to the table below: Drive 0 1 0 1 Hard Drive Type 65 66 68 15 Controller Primary Primary Secondary Secondary For hard drives that are greater than 528 MB, the system automatically translates the hard drive parameter for DOS by logically halving the cylinders and doubling the heads. This allows DOS to access greater than 528 MB. The translated hard drive parameters are put into the hard drive parameter table in the shadow RAM copy of the system ROM. When using any operating system other than DOS, you must use F10 Setup to set up the hard drive parameter table without translation. Compaq Deskpro EN Series of Personal Computers C-1

File name Compaq DeskPro EN SM AppD.pdf

appendix D Beeps* 1L, 1S POST ERROR MESSAGES An error message results if the Power-On Self-Test (POST) encounters a problem. This test runs when the system is turned on, checking assemblies within the computer and reporting any errors found. Screen Message 101-ROM Error Probable Cause System ROM checksum. Recommended Action Flash the ROM. Replace the system board. 101-Option ROM Checksum Error 1L, 1S Option ROM checksum. Run Computer setup (F10 Setup). Verify the correct ROM. Flash ROM if applicable. Replace optional expansion card. 102-System Board Failure None DMA, timers, etc. Clear CMOS. Pull expansion cards. Replace the system board. 162-System Options Not Set 2S Configuration incorrect. RTC (real-time clock) battery may need to be replaced. Battery life is approximately 5 years. CMOS jumper may not be properly installed. Run Computer Setup (F10 Setup). Reset the date and time under Control Panel. If the problem persists, replace the RTC battery. Check for proper placement of the CMOS jumper. Set the date and time. If the problem persists, replace the RTC battery. 163-Time & Date Not Set 2S Invalid time or date in configuration memory. RTC (real-time clock) battery may need to be replaced. Battery life is approximately five years. CMOS jumper may not be properly installed. Check for proper placement of the CMOS jumper. Make sure memory module(s) (if any) are installed properly. Verify proper memory module type. 164-Memory Size Error 2S Memory configuration is incorrect. * L = Long, S = Short continued Compaq Deskpro EN Series of Personal Computers D-1 POST Error Messages Continued Screen Message 201-Memory Error Beeps* None Probable Cause RAM failure. Recommended Action Run Computer Setup (F10 Setup). Make sure memory modules are installed correctly. Verify proper memory module type. Replace the memory module(s). Replace system board. 203-Memory Address Error None RAM failure. Run Computer Setup (F10 Setup). Make sure memory modules are installed correctly. Verify proper memory module type. Replace the memory module(s). Replace system board. 205-Memory Error None Cache memory error (processor cache). Remove secondary cache if applicable. Replace processor. 206-Secondary cache controller failure 207-ECC Corrected Single Bit Errors in DIMM/SIMM Pair(s) X,X ... None Cache memory controller or RAM failure. Single Bit ECC error. Replace secondary cache. 2S Verify proper memory module type. Try another memory slot. Replace DIMM/SIMM if error persists. 213-Incompatible DIMM Module in DIMM Socket(s) X,X, 2S A DIMM module in DIMM socket identified in the error message is missing critical SPD information, or is incompatible with the chipset. Keyboard failure. Verify proper memory module type. Try another memory slot. Replace DIMM if error persists. 301-Keyboard Error None Reconnect keyboard with computer turned off. Check connector(s) for bent or missing pins. Replace keyboard. * L = Long, S = Short

File name Compaq DeskPro EN SM AppE.pdf

appendix E DIAGNOSTIC ERROR CODES Diagnostic error codes occur if the system recognizes a problem while running the Compaq Diagnostics program. These error codes help identify possibly defective subassemblies. Diagnostic error messages consist of three components, AABB-CC, where AA = Device Code BB = Subtest Code CC = Error Code The following table lists the device codes (AABB-CC) and the subtest code (AABB-CC) covered by Compaq Diagnostics Tests. Some codes listed in this table will not apply to the computers described in this manual and will not be detailed in the tables that follow. Summary of Test Error Codes Error Code Range 0100 - 0199 0200 - 0210 0301 - 0304 0401 - 0498 0501 - 0516 0600 - 0699 0802 - 0824 1101 - 1109 1201 - 1210 1700 - 1799 1800 - 1823 1900 - 1906 2113 - 2199 2402 - 2480 2502 - 2502 Device Description Processor (P1) Memory Keyboard Parallel Port Video Display Unit Diskette Drive Monochrome Video Board Serial Port Modem Hard Drive CD-ROM Tape Drive Second Processor (P2) Enhanced Color Graphics (ECG/VGA) Pen/Digitizer Error Code Range 3113 - 3199 3206 - 3206 3300 - 3333 3400 - 3401 4113 - 4199 5100 - 5130 5234 - 5240 6000 - 6089 6500 - 6599 6600 - 6699 6700 - 6799 7000 8601 8700 - 8702 Device Description Third Processor (P3) Audio System Mediavision Spectrum 16 Multimedia TV Tuner Board Fourth Processor Plasma Display System Advanced Color Graphics (AGC) Network Card SCSI Hard Drives CD-ROM Drives SCSI Tape Drives Server Manager/R Board Auxiliary Input Interface Game Port Compaq Deskpro EN Series of Personal Computers E-1 The remaining tables list possible error codes (AABB-CC), descriptions of each error condition, and recommended actions to resolve the error condition. Retest the system after completing each step. If the problem has been resolved, do not proceed with the remaining steps. For assistance in the removal and replacement of a particular subassembly, see the "Removal and Replacement Procedures" chapter in the product-specific MSG. Microprocessor Error Code 0101-xx 0102-xx Description CPU test failed. Coprocessor error. Recommended Action Replace the system board and retest. 1. Run Computer Checkup or Computer Setup and retest. 2. Replace the system board and retest. The following step applies to error codes 0103-xx through 0106-xx. Replace the system board and retest. 0103-xx DMA controller failed. 0104-xx 0105-xx 0106-xx Interrupt controller failed. Port error. Keyboard controller self-test failed. CMOS RAM test failed. CMOS interrupt test failed. CMOS clock test failed. Programmable timer test failed. Protected mode test failed. Speaker test failed. 0107-xx 0108-xx 0109-xx 0110-xx 0113-01 0114-01 The following steps apply to error codes 0107-xx through 0109-xx: 1. Replace the battery/clock module and retest. 2. Replace the system board and retest. Replace the system board and retest: Replace the system board and retest. 1. Verify the speaker connection. 2. Replace the system board and ret

File name Compaq DeskPro EN SM AppF.pdf

appendix F TROUBLESHOOTING WITHOUT DIAGNOSTICS Preliminary Checklist This section describes some simple, preliminary tests and guidelines for troubleshooting the computer without using the diagnostics. If you encounter some minor problem with the computer or a software application, go through the following checklist for possible solutions before running any of the diagnostic utilities: n n n n n n n n n n n n n n Are the computer and monitor connected to a working electrical outlet? Is the computer turned on? Is the green power light illuminated? Is the monitor turned on? Is the green monitor light illuminated? Turn up the monitor brightness and contrast controls if the monitor is dim. Press and hold any key. If the system beeps, then the keyboard should be operating correctly. Check all cables for loose or incorrect connections. Reconfigure the computer after installing a non plug and play expansion board or other option, such as a diskette drive. Are all of the necessary device drivers installed? Have all printer drivers been installed for each application? Remove all diskettes from the diskette drives before you turn on the system. Are all switches set correctly? Is the NIC Remote Wakeup cable (featured on some models) connected between the NIC and the riser/system board? Compaq Deskpro EN Series of Personal Computers F-1 Solving Minor Problems Problem Computer will not turn on. Possible Solution 1. 2. Ensure that the computer is properly connected to an external power source. A PCI or ISA card that has been installed is defective. Remove any adapter card that was just installed. Computer appears locked up and won't turn off when the power button is pressed. Computer date and time display is incorrect. Software control of the power button may not be functional. Press and hold the button for four seconds, then release. This invokes the hardware override for the power button. First reset the date and time under Control Panel. If the problem persists, the real-time clock (RTC) battery may need to be replaced. Refer to the "Removal and Replacement Procedures" chapter in the product-specific MSG. 1. The unit temperature was exceeded because the unit is in an exceedingly hot environment or the fan is blocked. Let the unit cool down. 2. The fan may not be functioning correctly. 3. The unit temperature was exceeded because the computer was functioning with the cover or side panel removed. Replace cover or side panel, and let the computer cool down before turning power back on. Computer powered off automatically. Computer appears to pause periodically. Cannot remove computer cover or side panel. Network driver is loaded and no network connection is established. Establish a network connection, or use Computer Setup or Windows Device Manager to disable the network controller. 1. Smart Lock, featured on some computers, is locked. Unlock the Smart Cover Lock using Computer Setup. 2. The Smart Cover FailSafe Key, a device for manually disabling

File name Compaq DeskPro EN SM AppG.pdf

appendix G Component P/S connector Second P/S connector (as required) Third P/S connector (as required) Main Power HDD LED connector Speaker connector Audio connector (from CD-ROM Second fan connector WOL connector (NIC cable) Diskette drive connector Second Audio connector AUI connector Primary IDE connector Secondary IDE connector Video memory upgrade connector Primary SCSI Connector Secondary SCSI connector ITP connector Primary processor socket Secondary processor socket processor CMOS header Video pass through header Memory slot The first slot populated (DIMM1 or RIMM1) and tested. Following memory slots BNC RJ-45 Jack IEEE 1394 ISA slots PCI slots Riser board Device bay connectors continued SYSTEM BOARD AND RISER BOARD REFERENCE DESIGNATORS Designator P1 P2 P3 P5 P6 P7 P8 P9 P10 P11 P15 P20 P21 P25 - P26 P30 P31 P100 XU1 XU2 E50 E51 XMM1 XMM2 - XMM5 J6 J7 J8 J10 - 19 J20 -29 J30 J31 - J35 Compaq Deskpro EN Series of Personal Computers G-1 Reference Designators Continued Designator J36 J40 J50 J51 J52 Component AC97 connector AGP First parallel port Second parallel port Double-stacked parallel port Top Port B Bottom Port A First serial port Second serial port Double-stacked serial port Top Serial B Bottom Serial A Keyboard connector (Closest to P/S) Mouse connector Double-stacked mouse/keyboard connector Top Mouse Bottom Keyboard Video connector Single USB connector Double-stacked USB Microphone jack Line-in jack Line-out jack Headphone jack Volume control Double-stacked headphone/microphone connector Top Microphone Bottom Headphone Double-stacked line-in/line-out connector Top Line in Bottom Line out ROM socket J53 J54 J55 J66 J67 J68 J69 J70 J71 J72 J73 J74 J75 J76 J77 J78 XU15 G-2 System Board and Riser Board Reference Designators

File name Compaq DeskPro EN SM AppH.pdf

appendix H Color Green Green Green None Red Red Red Red Red Green Green Green 4 blinks/second On 1 blink/second 1 blink/two seconds On Flashing Flashing Flashing DIAGNOSTIC INDICATOR LIGHTS LED Power Power Power Power Power Power Power Power Power and Hard Drive Num Lock Caps Lock Scroll Lock LED Activity On 1 blink/second 1 blink/second State/Message Computer on Normal suspend mode Suspend to RAM Computer off CPU thermal shutdown CPU not installed/fetching code ROM error Power supply crow bar Riser board not seated Memory error No video System board failure, prior to video Compaq Deskpro EN Series of Personal Computers H-1

File name Compaq DeskPro EN SM CH1.pdf

chapter 1 CAUTION: Do not add optional hardware devices to your computer until the operating system is successfully installed. Doing so may cause errors and may prevent the operating system from installing properly. CAUTION: Once the automatic installation has begun, DO NOT TURN OFF THE COMPUTER UNTIL THE PROCESS IS COMPLETE. Turning off the computer during the installation process might damage the software that runs the computer. INSTALLING THE OPERATING SYSTEM Depending on the model, Microsoft Windows 95, 98, or Microsoft Windows NT is preinstalled on the computer and will be configured automatically the first time the computer is turned on. 1.1 Microsoft Windows 95 or 98 The first time the computer is turned on, Microsoft Windows is automatically installed. This takes approximately 5 to 15 minutes, depending on the system hardware configuration. At the beginning of the installation process, the user is prompted to select the appropriate language for the operating system. Read and follow the instructions that appear on the screen to complete the installation. When the Welcome to Windows screen is displayed, the installation process is complete. 1.2 Microsoft Windows NT Workstation 4.0 The first time you turn on your computer, Microsoft Windows NT Workstation is automatically installed for you. This takes approximately 30 minutes, depending on the system hardware configuration. At the beginning of the installation process, the user is prompted to select the appropriate language for the operating system. Read and follow the instructions that appear on the screen to complete the installation. 1.2.1 Installing Windows NT Workstation 4.0 over a Network Network installation is used primarily for installing or upgrading Microsoft Windows NT Workstation over a local area network. It can also be used to install additional drivers or files with Windows NT. This capability does not imply the grant of a site license for Microsoft Windows NT Workstation and should only be used to install the operating system on computers for which the appropriate software license has already been obtained. This installation method should be used to deploy Windows NT using a distribution share point over a network connection. The initial Windows NT installation (completed when the computer is first turned) on creates an I386 directory. This directory and its subdirectories provide the Compaq-specific integration of Compaq Deskpro EN Series of Personal Computers 1-1 Windows NT for the computer model. This image, license permitting, can be used as a distribution share point to deploy Windows NT over a network connection. To use a distribution share point to install or upgrade Windows NT, see the Windows NT Resource Kit and its documentation. 1.2.2 Installing or Upgrading Device Drivers To install hardware devices such as a printer, a display adapter, or network adapter after the Windows NT installation is completed, Windows NT needs access to the appropriate s

File name Compaq DeskPro EN SM CH2.pdf

chapter 2 SETUP UTILITIES AND DIAGNOSTIC FEATURES Compaq Computer Setup Utilities and diagnostic features provide information needed about the computer system when contacting Compaq Customer Support. These tools can also be used to: n n n n n n Change factory default settings and to set or change the system configuration, which may be necessary when you add or remove hardware. Determine if all of the devices installed on the computer are recognized by the system and functioning properly. Determine information about the operating environment of the computer. Solve system configuration errors detected but not automatically fixed during the PowerOn Self-Test (POST). Establish and manage passwords and other security features. Establish and manage energy-saving timeouts. 2.1. Computer Setup Utilities Use Computer Setup Utilities to do the following: n n n n n Change factory default. Set the system date and time. Set, view, change, or verify the system configuration including settings for processor, graphics, memory, audio, storage, communications, and input devices. Modify the boot order of bootable devices such as hard drives, diskette drives, CD-ROM drives, DVD-ROM drives, or PD-CD drives. Enable Quick Boot which is faster than Full Boot but does not run all of the diagnostic tests run during a Full Boot. You can set your system to: t t t always Quick Boot (default); periodically Full Boot (from every 1 to 30 days); or always Full Boot. n Enable or disable Network Server Mode, which allows the computer to boot the operating system when the power-on password is enabled. The keyboard and mouse remain locked until the power-on password is entered. Select Clean or Descriptive mode for displaying Power-On Self-Test (POST) messages. Clean mode suppresses most POST messages, such as memory count, product name, and other non-error text messages. If a POST error occurs, the error is displayed regardless of the mode selected. To manually switch to Descriptive mode during POST, press any key (except F10 or F12). Establish Ownership Tag, the text of which is displayed each time the system is turned on or restarted. n n Compaq Deskpro EN Series of Personal Computers 2-1 n n n n n n n n n Enter the Asset Tag or property identification number assigned by your company to this computer. Enable power-on password prompting during system restarts (warm boots) as well as during power-on. Establish a setup password that controls access to Computer Setup and the settings described in this section. Secure the serial, USB, or parallel ports so that they cannot be used until they are unsecured. Enable or disable QuickLock and QuickBlank features. Enable or disable removable media boot ability. Enable or disable removable media write ability. Solve system configuration errors detected but not automatically fixed during the PowerOn Self-Test (POST). Replicate your system setup by saving system configuration information on diskette and restoring it on one or more

File name Compaq DeskPro EN SM CH3.pdf

chapter 3 INTELLIGENT MANAGEABILITY Compaq Intelligent Manageability is the best, most comprehensive set of desktop management solutions in the industry. Providing easy control and management of the desktop and portable PC, Intelligent Manageability delivers significant financial and intangible returns when used to manage distributed PC environments. Intelligent Manageability is built upon industry-standard building blocks, including DMI 2.0, Web-Based Enterprise Management, Intel's "Wired for Management," SNMP, and Net PC technologies. It is tightly integrated with Compaq Management Solutions Partners and Compaq Insight Manager. Intelligent Manageability delivers solutions in five areas of primary concern for today's businesses: n n n n n Initial Configuration and Deployment Asset Tracking and Security Fault Notification and Recovery Software Updating and Management Building Blocks and Partners This section provides an introduction to Intelligent Manageability concepts and features. For more detailed information on specific features, refer to the online Intelligent Manageability Installation and Configuration Guide (IMINST.HLP) and the online Intelligent Manageability Guide (INTMGT3.HLP). 3.1 Support for specific features described in this chapter and in the online Intelligent Manageability Guide may vary by model or software version. Initial Configuration and Deployment Compaq computers come with a preinstalled set of system software. Automated System Installation and Remote System Installation enable you to replace the preinstalled software with a customized set of system and application software for consistent, standard software deployment. The Compaq Deskpro Supplement CD, ROM-based setup, and ACPI-ready hardware provide further assistance with selective recovery of system software, configuration management and troubleshooting, and power management. 3.1.1 Remote System Installation Remote System Installation allows you to start and set up your system using the software and configuration information located on a network server. The Remote System Installation feature is usually used as a system setup and configuration tool, and can be used for the following tasks: n n Installing the optional Setup partition. The partition should be installed only if you wish to use the previous generation of Compaq Computer Setup and Diagnostics utilities. Formatting a hard drive. Compaq Deskpro EN Series of Personal Computers 3-1 n n Installing an operating system. Installing application software or drivers. To initiate Remote System Installation, press F12 when the F12=Network Service Boot message appears in the lower-right corner of the Compaq logo screen. Follow the instructions on the screen to continue the process. 3.2 Asset Tracking and Security Compaq AssetControl features incorporated into the computer provide key asset tracking data that can be managed using Management Solutions Partners products. Seamless, automatic integration betwe

File name Compaq DeskPro EN SM CH4.pdf

chapter 4 CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage. REMOVAL & REPLACEMENT PRELIMINARIES This chapter provides general service information for the computer. Adherence to the procedures and precautions described in this chapter is essential for proper service. 4.1 Electrostatic Discharge Information A sudden discharge of static electricity from your finger or other conductor can destroy staticsensitive devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device exposed to electrostatic discharge (ESD) may not be affected at all and can work perfectly throughout a normal cycle. The device may function normally for a while, then degrade in the internal layers, reducing its life expectancy. Networks built into many integrated circuits provide some protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions. 4.1.1 Generating Electrostatic Voltage The following table shows that: n n Different activities generate different amounts of electrostatic voltage (static electricity). Electrostatic voltage increases as humidity decreases. Activity 700 volts can degrade a product. Relative Humidity 55% 7,500 V 3,000 V 400 V 400 V 2,000 V 3,500 V 40% 15,000 V 5,000 V 800 V 700 V 4,000 V 5,000 V 10% 35,000 V 12,000 V 6,000 V 2,000 V 11,500 V 14,500 V Walking across carpet Walking across vinyl floor Motions of bench worker Removing DIPs* from plastic tube Removing DIPs* from vinyl tray Removing DIPs* from Styrofoam Removing bubble pack from PCB 7,000 V 20,000 V 26,500 V Packing PCBs in foam-lined box 5,000 V 11,000 V 21,000 V *Dual Inline Packaging (DIP) is the packaging around individual microcircuitry. These are then multi-packaged inside plastic tubes, trays, or Styrofoam. Compaq Deskpro EN Series of Personal Computers 4-1 4.1.2 Preventing Electrostatic Damage to Equipment Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of sensitivity. The following proper packaging and grounding precautions are necessary to prevent damage to electric components and accessories. n n n n n n n To avoid hand contact, transport products in static-safe containers such as tubes, bags, or boxes. Protect all electrostatic parts and assemblies with conductive or approved containers or packaging. Keep electrostatic sensitive parts in their containers until they arrive at static-free stations. Place items on a grounded surface before removing them from their container. Always be properly grounded when touching a sensitive component or assembly. Avoid contact with pins, leads, or circuitry. Place reusable electrostatic-sensitive parts from assemblies in protective packaging or conductive foam. 4.1.3 Personal G

File name Compaq DeskPro EN SM Notice.pdf

Notice The information in this guide is subject to change without notice. COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN; NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL. This guide contains information protected by copyright. No part of this guide may be photocopied or reproduced in any form without prior written consent from Compaq Computer Corporation. © 1999 Compaq Computer Corporation. All rights reserved. Printed in the U.S.A. Compaq and Deskpro are registered in the U. S. Patent and Trademark Office. PREMIER·SOUND is a trademark of Compaq Computer Corporation. Microsoft, MS-DOS, Windows, Windows NT, and other names of Microsoft products referenced herein are trademarks or registered trademarks of Microsoft Corporation. Intel and Pentium are registered trademarks of Intel Corporation. Celeron and MMX are trademarks of Intel Corporation. Product names mentioned herein may be trademarks and/or registered trademarks of their respective companies. The software described in this guide is furnished under a license agreement or nondisclosure agreement. The software may be used or copied only in accordance with the terms of the agreement. Maintenance & Service Guide, Volume II Compaq Despkro EN Series of Personal Computers, Small Form Factor, Front-Mounted Audio Solution First Edition (March 1999) Part Number 400895-001 Spare Part Number 124828-001 Compaq Computer Corporation

File name Compaq DeskPro EN SM preface.pdf

preface ABOUT THIS GUIDE This Maintenance & Service Guide is a troubleshooting and repair guide that can be used for reference when servicing the Compaq Deskpro EN Series of Personal Computers. Only authorized technicians trained by Compaq should attempt to repair this equipment. Compaq Computer Corporation reserves the right to make changes to the Compaq Deskpro EN Series of Personal Computers without notice. Symbols and Conventions The following text and symbols mark special messages throughout this guide: ! WARNING: Text set off in this manner indicates that failure to follow directions in the warning could result in bodily harm or loss of life. CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of data. Text set off in this manner presents commentary, sidelights, or clarifying information. Technician Notes ! WARNING: Only authorized technicians trained by Compaq should attempt to repair this equipment. All troubleshooting and repair procedures are detailed to allow only subassembly/module level repair. Because of the complexity of the individual boards and subassemblies, no one should attempt to make repairs at the component level or to make modifications to any printed wiring board. Improper repairs can create a safety hazard. Any indications of component replacement or printed wiring board modifications may void any warranty. CAUTION: To properly ventilate your system, you must provide at least 3 inches (7.6 cm) of clearance at the front and back of the computer. CAUTION: The computer is designed to be electrically grounded. To ensure proper operation, plug the AC power cord into a properly grounded AC outlet only. Compaq Deskpro EN Series of Personal Computers vii Additional Documentation The following documentation is available to support these products: n n n n n n User Documentation Technical Training Guides Compaq Service Advisories and Bulletins Compaq QuickFind Technical Reference Guide Compaq Service Quick Reference Guide viii About This Guide