Deskpro Service Reference Guide
152611-001 123385-001
Deskpro Service Reference Guide
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.
C ONTENTS preface About This Guide Symbols and Conventions .........................................................................................................vii Technician Notes .......................................................................................................................vii Additional Documentation .......................................................................................................viii chapter 1 Installing the Operating System 1.
Changing a Power-On or Setup Password ....................................................................3-4 Deleting a Power-On Password ....................................................................................3-5 National Keyboard Delimiter Characters......................................................................3-5 Clearing Passwords .......................................................................................................3-5 3.2.2 Smart Cover Sensor ......................
appendix F Troubleshooting Without Diagnostics ..............................................................................................F-1 appendix G System Board and Riser Board Reference Designators ...............................................................G-1 appendix H Model Number Naming .....................................................................................................................H-1 Index ................................................................................
preface ABOUT THIS GUIDE This Deskpro Service Reference Guide is a troubleshooting and repair guide that can be used for reference when servicing the Compaq Deskpro 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 Family of Personal Computers without notice.
Additional Documentation The following documentation is available to support these products: T User Documentation T Technical Training Guides T Compaq Service Advisories and Bulletins T Compaq QuickFind T Technical Reference Guide T Compaq Service Quick Reference Guide T Compaq Maintenance & Service Guide viii About This Guide
chapter 1 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. 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.
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 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.
1.3 Registering the Computer The computer should be registered with Compaq. Registration establishes a record of ownership and gives the user an opportunity to receive product announcements, updates, and other communications periodically. To register one machine, just visit Compaq’s Web site at www.compaq.com/products/registration and follow the instructions that appear on the screen.
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: 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.
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. T Secure the serial, USB, or parallel ports so that they cannot be used until they are unsecured. Enable or disable removable media boot ability.
2.1.2 Computer Setup Menu Heading Option Description File System Information Lists product name, processor type/speed/stepping, CPU serial number, cache size, system ROM family and version, installed memory size, and asset tracking number. Set Time and Date Allows you to set system time and date. Save to Diskette Saves system configuration to a blank 1.44-MB diskette. Restore from Diskette Restores system configuration from a diskette. Set Defaults and Exit Restores factory default settings.
Computer Setup Menu Continued Heading Option Description Security Password Options Enables/disables network server mode, keyboard QuickLock, QuickBlank screen when locked, and QuickLock in energy saver mode. See Section 3.2, “Asset Tracking and Security,” for more information. Note: This selection will appear only if a power-on password is set. Smart Cover Enables/disables Smart Cover Sensor and Cover Lock. (Feature supported on select models only.) Lists most recent cover removal.
Computer Setup Menu Continued Heading Option Description Advanced* Power-On Self Test Allows you to set POST mode (QuickBoot or FullBoot) and enables/disables POST messages. Onboard Devices Allows you to set resources for onboard system devices (serial port, parallel port, etc.). PCI Devices Lists currently installed PCI devices and their IRQ settings. Allows you to reconfigure IRQ settings for these devices or to disable them entirely.
2.2 Computer Diagnostics ✎ The following section applies only to computers equipped with a diskette drive. Compaq strongly recommends that you create a diagnostics diskette as soon as you begin to use the computer. This diskette will play an important role in the restoration process if you ever experience a major system failure. It will also allow you to run the Computer Checkup (TEST) or View System Information (INSPECT) diagnostic programs.
The information provided by INSPECT includes: Contents of the operating system startup files Current memory configuration ROM versions Type of processor and coprocessor Diskette, CD-ROM, DVD-ROM tape, or hard drives installed Active printer and communications interfaces Modem type installed Graphics settings Windows WIN.
2.2.
Running Diagnostic Tests If your version of Compaq Insight Personal Edition includes diagnostic testing utilities, four tabs will appear next to Overview: Test, Status, Log, and Error. 1. Select the Test tab. 2. Select one of the following options: ❏ Quick Test—Runs a quick, general test on each device with a minimal number of prompts. ❏ Complete Test—Runs maximum testing of each device with minimal prompts. ❏ Custom Test—Runs only the tests you select.
2.3.2 Compaq Restore CD The Compaq Restore CD offers easy deployment and recovery of the system software. Along with the Microsoft operating system CD, the Compaq Restore CD enables the user to selectively restore the original system software. This can be extremely helpful in the event of hard drive failure or corruption. The Compaq Restore CD is specific to each desktop model and accompanies many desktop models along with the Microsoft operating system CD. 2.
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.
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.
Setup Utilities Menu continued Feature Purpose Smart Cover Lock Prevents unauthorized access to the internal components. This is a softwarecontrollable cover lock, controlled by the setup password. ✎ Memory Change Alerts The Smart Cover FailSafe Key is a device for manually disabling the Smart Cover Lock, is available from Compaq. You’ll need the FailSafe Key in case of forgotten password, power loss, or computer malfunction.
Establishing a Power-On Password Using Computer Setup Establishing a power-on password through Computer Setup prevents access to the computer when power is turned on, unless the password is entered. The password must be entered each time the computer is turned on, when the key icon appears on the monitor. 1. Turn on or restart the computer. If you are in Windows, click Start Æ Shut Down Æ Restart the Computer. 2. When the F10 Setup message appears in the lower-right corner of the screen, press the F10 key.
Deleting a Power-On Password 1. Turn on or restart the computer. If you are in Windows, click Start Æ Shut Down Æ Restart the Computer. To delete the setup password, run Computer Setup. 2. When the key icon appears, type your current password followed by a slash (/) or alternate delimiter character as shown: current password/ ✎ Refer to the “National Keyboard Delimiter Characters” section in this chapter for information about alternate delimiter characters.
3.2.2 Smart Cover Sensor Smart Cover Sensor is a combination of hardware and software technology that can alert you when the computer cover or side panel has been removed. There are three levels of protection, as described in the following table: Level Setting Description Level 0 Disabled Smart Cover Sensor is disabled (default). Level 1 Notify User When the computer is restarted, the screen displays a message indicating that the computer cover or side panel has been removed.
Unlocking the Smart Cover Lock 1. Turn on or restart the computer. If you are in Windows, click Start Æ Shut Down Æ Restart the Computer. 2. When the F10 Setup message appears in the lower-right corner of the screen, press the F10 key. Press Enter to bypass the title screen, if necessary. ✎ If you do not press the F10 key while the message is displayed, you must turn the computer off, then on again, to access the utility. 3. Select Security, then select Smart Cover and the Unlocked option. 4.
3.3.2 SMART Hard Drive Fault Prediction The SMART hard drive monitors hard drive activity to predict failures and, in some cases, fix faults before failures occur. Fault prediction and failure indication parameters, such as abnormal variations in spinup and seek times, or non-correctable read and write errors, are tracked to determine the hard drive condition. Should these errors become significant, the computer displays a warning message.
3.4 Software Updating and Management Remote ROM Flash, Remote Wakeup, and Remote Shutdown, when integrated with Management Solutions Partners products, deliver ongoing management of firmware, 24 hours a day. This supplements the software distribution capabilities of the Solutions Partners products, which can also be used to distribute new applications, device drivers, and other system software.
FailSafe Boot Block ROM The FailSafe Boot Block ROM allows for system recovery in the unlikely event of a ROM flash failure, for example, if a power failure occurs during a ROM upgrade. The Boot Block is a flashprotected section of the ROM that checks to validate the system ROM each time power to the system is turned on. If the system ROM is valid, the system starts normally.
The following table lists the various keyboard light combinations as well as the meaning and action associated with each combination. Num Lock 1 Caps Lock 2 Scroll Lock 3 Meaning and Required Action OFF ON OFF System requires setup password. Enter the setup password. The light remains turned on until you enter a valid setup password. ON OFF OFF System could not start from diskette because the ROMPaq diskette is not present, is bad, or the drive is not ready.
3.4.2 Remote Security Management Remote Security Management allows the system administrator to safely set or modify security features on remote Compaq desktops, directly from the centralized network management console. Enabling the system administrator to perform these tasks remotely, on multiple computers, results in consistent deployment of and greater control over desktop security parameters over the network. It also results in greater productivity and lower total cost of ownership.
3.4.4 Replicating Original Setup This procedure gives an administrator the ability to easily copy one setup configuration to other computers of the same model. This allows for faster, more consistent configuration of multiple computers. To replicate your setup: 1. Access the Computer Setup Utilities menu. 2. Click File Æ Save to Floppy. Follow the instructions on the screen. 3. To replicate the configuration, click File Æ Restore from Floppy, and follow the instructions on the screen. 3.4.
3.4.7 Enhanced Support Software CD and World Wide Web Site Compaq engineers rigorously test and debug software developed by Compaq and third-party suppliers, and develop operating-system specific support software, to ensure the highest level of performance, compatibility, and reliability for Compaq personal computers. When making the transition to new or revised operating systems, it is important to implement the support software designed for that operating system.
3.5 Building Blocks and Partners Compaq management solutions are based on industry standards, including DMI 2.0, Web-Based Enterprise Management, Intel’s “Wired for Management,” SNMP, and Net PC technologies.
appendix A CONNECTOR PIN ASSIGNMENTS This appendix contains the pin assignments for many computer connectors. Some of these connectors may not be used on the computer being serviced.
Ethernet AUI Connector and Icon 8 7 15 6 14 5 13 4 12 3 11 2 10 1 9 Pin Signal 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 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 Pin Signal 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18-25 Strobe Data Bit 0 Data Bit 1 Data
Serial Interface Connector and Icon 1 2 6 3 7 4 8 5 9 Pin Signal 1 2 3 4 5 6 7 8 9 Carrier Detect Receive Data Transmit Data Data Terminal Ready Signal Ground Data Set Ready Request to Send Clear to Send Ring Indicator USB Connector Connector and Icon 1 2 3 4 Pin Signal 1 2 3 4 VCC - Data + Data Ground Microphone Connector Connector and Icon (1/8” miniphone) Pin Signal 1 2 3 1 (Tip) Audio 2 (Ring) Power 3 (Shield) Ground Connector and Icon (1/8” miniphone) Pin Signal 1 2 3 1
External Infrared Transceiver Connector and Icon 8 7 5 6 4 2 3 Pin Signal 1 Transmit 2 Receive 3 Ground 4 5V 5 Mode 6 Not Used 7 Not Used 8 Not used 1 Monitor Connector 5 4 3 2 1 10 9 8 7 6 15 14 13 12 11 A-4 Connector Pin Assignments Pin Signal 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Red Analog Green Analog Blue Analog Not Connected Ground Ground Ground Ground +5V DC Ground Not Connected DCC Serial Data Horizontal Sync Vertical Sync DCC Serial Clock
IDE/EIDE Drive Cable 39 1 40 2 Pin Signal Pin Signal Pin Signal 1 RESET 15 DD1 29 DMAK 2 GROUND 16 DD14 30 GROUND 3 DD7 17 DD0 31 INTRQ 4 DD8 18 DD15 32 IOCS16 5 DD6 19 GROUND 33 DA1 6 DD9 20 (KEY) 34 PDIAG (80-pin cable detect) 7 DD5 21 DMARQ 35 DA0 8 DD10 22 GROUND 36 DA2 9 DD4 23 DIOW 37 CS1FX 10 DD11 24 Ground 38 CS3FX 11 DD3 25 DIOR 39 DASP 12 DD12 26 GROUND 40 GROUND 13 DD2 27 IORDY 14 DD13 28 CSEL Deskpro Servic
Slimline CD-ROM Adapter A-6 Pin Signal Pin Signal Pin Signal Pin Signal 1 RESDRV_ 18 D15 35 A0 52 FP05 2 GROUND 19 GROUND 36 A2 53 FP06 3 DO7 20 (KEY) 37 CS1FX 54 FP07 4 D08 21 DRQ 38 CS3FX 55 FP08 5 D06 22 GROUND 39 DASP 56 FP09 6 D09 23 IOW 40 GROUND 57 FP10 7 D05 24 GROUND 41 +5VMLOG 58 FP11 8 D10 25 IOR 42 +5VMOT 59 FP12 9 D04 26 GROUND 43 GROUND 60 FP13 10 D11 27 IOCHRDY 44 AUDIO_L 61 FP14 11 D03 28 CABLE SELEC
AGP Connector Pin Signal A Signal B Pin Signal A Signal B Pin Signal A Signal B 1 +12 V OVRCNT# 23 Ground Ground 45 VCC 3.3 VCC 3.3 2 TYPEDET# + 5V 24 Reserved 3.3 Vaux 46 TRDY# DEVSEL# 3 Reserved + 5V 25 VCC 3.3 VCC 3.3 47 STOP# Vddq 4 USB- USB+ 26 AD30 AD31 48 PME# PERR# 5 Ground Ground 27 AD28 AD29 49 Ground Ground 6 INTA# INTB# 28 VCC 3.3 VCC 3.
Ultra SCSI Connector and Icon Pin Signal Pin Signal Pin Signal 1-11 Ground 31 DB5 41 ATN # 12 Reserved 32 DB6 42 Ground 13 Open 33 DB7 43 BSY # 14 Reserved 34 DBP 44 ACK # 15-25 Ground 35 Ground 45 RST # 26 DB0 36 Ground 46 MSG # 27 DB1 37 Reserved 47 SEL # 28 DB2 38 TERMPWR 48 C/D 29 DB3 39 Reserved 49 REQ # 30 DB5 40 Ground 50 Input/Output IDE CD-ROM Cable A-8 49 1 50 2 Pin Signal Pin Signal Pin Signal Pin Signal 1 RESDRV_
14-Pin Power Connector 1 13 2 14 Pin Signal Pin Signal Pin Signal Pin Signal 1 +3.3 V 5 RTN 9 -12 V 13 Fan 2 +3.3 V Aux 6 +5 V 10 Fan OFF 14 +12 V 3 RTN 7 RTN 11 ON/STBY 4 +5 V 8 +3.3 V 12 +5 V Aux Pin Signal Pin Signal 20-Pin Power Connector - Deskpro EP 1 19 2 20 Pin Signal Pin Signal 1 +3.3 V 6 +5 V 11 +3.3 V 16 RTN 2 +3.
24-Pin Power Connector A-10 1 23 2 24 Pin Signal Pin Signal Pin Signal Pin Signal 1 +3.3 V 7 aux RTN 13 +3.3V 19 RTN 2 +3.3 V 8 Fan OFF 14 -12 V 20 -5 V 3 RTN 9 +5 V aux 15 RTN 21 +5 V 4 +5 V 10 +12 V 16 ON/STBY 22 +5 V 5 RTN 11 3.3 Vaux 17 RTN 23 3.
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.
Country-Specific Requirements Additional requirements specific to a country are shown in parentheses and explained below.
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.
appendix D 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 Beeps* Probable Cause Recommended Action 101-Option ROM Error 1L, 1S System ROM checksum. 1. Verify the correct ROM. 2. Flash the ROM if needed. 3. If an expansion card was recently added, remove it and see if the problem remains. 4.
POST Error Messages Continued Screen Message Beeps* Probable Cause Recommended Action 164-Memory Size Error 2S Memory configuration is incorrect. 1. Run Computer Setup (F10 Setup) or Windows utilities. 2. Make sure memory module(s) (if any) are installed properly. 3. Verify proper memory module type. 183-Invalid Processor Jumper Setting 2S System board jumper improperly set. Reset system board jumpers to match processor and bus speeds. 201-Memory Error None RAM failure. 1.
POST Error Messages Continued Screen Message Beeps* Probable Cause Recommended Action 301-Keyboard Error None Keyboard failure. 1. Reconnect keyboard with computer turned off. 2. Check connector for bent or missing pins. 3. Ensure that none of the keys are depressed. 4. Replace keyboard. 1. Reconnect the keyboard with computer turned off. 2. Ensure that none of the keys are depressed. 3. Replace keyboard. 4. Replace system board.
POST Error Messages Continued Screen Message Beeps* Probable Cause Recommended Action 601-Diskette Controller Error None Diskette controller circuitry or floppy drive circuitry incorrect. 1. 2. Check and/or replace cables. 3. Clear CMOS. 4. Replace diskette drive. 5. Replace the system board. 602-Diskette Boot Record Error None Diskette in drive A not bootable. Replace the diskette. 605-Diskette Drive Type Error 2S Mismatch in drive type. 1.
POST Error Messages Continued Screen Message Beeps* Probable Cause Recommended Action 914-Hood Lock Coil is not Connected None Hood lock mechanism is missing or not connected. 1. Reconnect or replace hood locking mechanism. 2. Reseat or replace hood locking mechanism cable. 916-Thermal Sensor from Processor Heatsink is not Connected. None Processor heatsink cable not Reseat or replace the processor connected to system board. heatsink cable going to the system board.
POST Error Messages Continued Screen Message Beeps* Probable Cause Recommended Action 1720-SMART Hard Drive Detects Imminent Failure None Hard drive is about to fail. (Some hard drives have a firmware patch that will fix an erroneous error message.) 1. Determine if hard drive is giving correct error message. Run the Drive Protection System test available. 2. Apply firmware patch if applicable. 3. Back up contents and replace hard drive. 1.
POST Error Messages Continued Screen Message Beeps* Probable Cause Recommended Action 1781-Disk 1 Failure None Hard drive/format error. 1. Run Computer Setup (F10 Setup). 2. Clear CMOS. 3. Check cable seating/jumper settings. 4. Run hard drive diagnostics. 5. Disconnect additional drives. 6. Run the Drive Protection System test if available. 7. Replace the hard drive. 1. Run Computer Setup (F10 Setup). 2. Clear CMOS. 3. Check cable seating /jumper settings.
POST Error Messages Continued Screen Message Beeps* Probable Cause Recommended Action 1791-Disk 1 Failure None Hard drive error or wrong drive type. 1. Run Computer Setup (F10 Setup). 2. Clear CMOS. 3. Check cable seating /jumper settings. 4. Run hard drive diagnostics. 5. Disconnect additional drives. 6. Confirm drive is supported on this computer (Large drive ROM support). 7. Run the Drive Protection System test if available. 8. Replace the hard drive. 9.
POST Error Messages Continued Screen Message Beeps* Probable Cause Recommended Action 1800-Temperature Alert None Internal temperature exceeds specification. 1. Check that computer air vents are not blocked and cooling fan is running. 2. Verify processor speed selection. 3. Replace the processor. 4. Replace the system board. 1801 None Processor not supported by ROM Bios. Upgrade Bios to proper version. Audible 1L, 3S System ROM is bad; system is running in Failsafe Boot Block mode.
POST Error Messages Continued Screen Message Beeps* Probable Cause Recommended Action Flashing Power and Hard Drive Green LEDs None Unseated riser board. 1. Remove riser board. 2. Wipe connector. 3. Reinstall riser board. Red Power LED Blinks Every None 2 or More Seconds Red Power LED Blinks Every None Second Red power LED ON * L = Long, S = Short D-10 POST Error Messages None Power supply overloaded. System memory error. Processor unseated. 1. Push in power button. LED should be green.
appendix E DIAGNOSTIC INDICATOR LIGHTS LED Color LED Activity State/Message Power Green On Computer on Power Green 1 blink/second Normal suspend mode Power Green 1 blink/second Suspend to RAM Power None Power Red 4 blinks/second CPU thermal shutdown Power Red On CPU not installed/fetching code Power Red 1 blink/second ROM error Power Red 1 blink/2 or more seconds Power supply overloaded Power and Hard Drive Red On Riser board not seated Num Lock Green Flashing Memo
appendix F TROUBLESHOOTING WITHOUT DIAGNOSTICS Preliminary Checklist This section describes some simple, preliminary tests and guidelines for troubleshooting the computer without using the diagnostics.
Solving Minor Problems Problem Possible Solution Computer will not turn on. 1. Ensure that the computer is properly connected to an external power source and the wall outlet is active. 2. A PCI or ISA card that has been installed is defective. Remove any expansion card that was just installed. 3. Reseat drive power, data, and power supply cables. Computer appears locked up and won’t turn off when the power button is pressed. Software control of the power button may not be functional.
Diskette Drive Problem Possible Solution Diskette drive light stays on. 1. Diskette is damaged. In Windows 95 or 98, run ScanDisk. Click Start Æ Programs Æ Accessories Æ System Tools Æ ScanDisk. In Windows NT, right click Start, click Explore, and select a drive. Select File Æ Properties Æ Tools. Under Error-checking, click Check Now. 2. Diskette is incorrectly inserted. Remove the diskette and reinsert. 3. Software program may be damaged. Check the program diskettes. 4. Drive button is not pushed in.
Display Problem Possible Solution Screen is blank 1. Monitor is not turned on and the monitor light is not on. Turn on the monitor and check that the monitor light is on. 2. Screen save has been initiated. Press any key or move the mouse to light the screen. 3. The cable connections are not correct. Check the cable connection from the monitor to the computer and to the electrical outlet. 4. The brightness need adjusting. Adjust the brightness control. 5. The energy saver feature has been enabled.
Display Problems Continued Problem Possible Solution Monitor overheats. There is not enough ventilation space for proper airflow. Leave at least 3 inches (7.6 cm) of ventilation space. Be sure there is nothing on top of the monitor obstructing the air flow. Cursor will not move using the arrow keys on the numeric keypad. The Num Lock key is on. Press the key to turn it off. The Num Lock light should not be on when you want to use the arrow keys.
Hard Drive This section identifies some quick checks for hard drive-related problems. The information provided by the diagnostics tests includes: error code, system serial number, drive serial number, drive model, and drive firmware revision. Specific details of the drive failure are not included. When you run the diagnostics, the test results are stored in a log. After completing the test, you can print this log to a local printer or save it to a file.
Hardware Installation You may need to reconfigure the computer when you add or remove hardware, such as an additional diskette drive. If you install a Plug and Play device, Windows 95 and 98 automatically recognizes the device and configures the computer. If you install a non-Plug and Play device, you must reconfigure the computer after completing installation of the new hardware.
DVD and CD-ROM Problem Possible Solution Cannot read compact disc. 1. CD is not properly seated in the drive. Eject the CD, correctly seat it in the drive, then reload. 2. CD has been loaded upside down. Eject the CD, turn it over, then reload. System will not boot from CD-ROM or DVD drive. 1. The CD-ROM or DVD boot is not enabled through the Computer Setup utility. Run the Computer Setup utility and set the drive priorities. 2. Ensure that drive cabling and jumpers are set correctly.
Memory Problem Possible Solution System won't boot or does not function properly after installing additional memory modules Memory module is not the correct type or speed grade for the system. Replace module with the correct industry-standard device for the computer. Out of Memory error. 1. Memory configuration may not be set up correctly; check memory configuration using Device Manager. 2. The computer has run out of memory for the application.
Network Some common causes and solutions for network problems are listed in the following table. These guidelines do not discuss the process of debugging network cabling. Problem Possible Solution The Remote Wakeup feature is not functioning. 1. The feature is not available when using an AUI network connection; use an RJ-45 network connection. 2. Remote Wakeup is not enabled. Use the network control application to enable Remote Wakeup. Network driver does not detect network controller.
Network Problem Continued Problem Possible Solution Network controller stopped working when an expansion board was added to the computer. 1. Network drivers are not loaded or driver parameters do not match the current configuration. Make sure that the drivers are loaded and that the driver parameters match the configuration of the network controller. 2. The cable is not securely connected or is attached incorrectly.
Resolving Audio Hardware Conflicts Hardware conflicts occur when two or more peripheral devices contend for the same signal lines or channels. Conflicts between the audio interface and another peripheral device may be due to the settings of the base I/O addresses, interrupts, or DMA channels. The audio interface typically has the following settings: Item Setting Base I/O address 220H FM Synthesizer I/O address 388-38Bh Interrupt IRQ 5 8-bit DMA Channel 1 To resolve hardware conflicts: 1.
appendix G SYSTEM BOARD AND RISER BOARD REFERENCE DESIGNATORS Designator Component E49 Clear Password header E50 CMOS header E51 Video pass through header J6 BNC J7 RJ-45 Jack J8 IEEE 1394 J10 - 19 ISA slots J20 -29 PCI slots J30 J31 - J35 Riser board Device bay connectors J40 AGP J50 First parallel port J51 Second parallel port J52 Double-stacked parallel port Top Port B Bottom Port A J55 Double-stacked serial port Top Serial B Bottom Serial A J66 Keyboard connector (Closes
Reference Designators Continued Designator J74 Line-out jack J75 Headphone jack J76 Volume control J77 Double-stacked headphone/microphone connector Top Microphone Bottom Headphone J78 Double-stacked line-in/line-out connector Top Line in Bottom Line out P1 P/S connector P2 Second P/S connector (as required) P3 Third P/S connector (as required) P5 Main Power HDD LED connector P6 Speaker connector P7 Audio connector (from CD-ROM P8 Second fan connector P9 WOL connector (NIC cable) P
appendix H MODEL NUMBER NAMING The following is an example of the 21-character model number information. END/P333/10a/5/128c/n Platform/Family EN EP Operating System 4 - Win NT 4.0 5 - Win 95 8 - Win 98 Processor Speed, MHz Form Factor S - Small Form Factor D - Desktop M - Minitower blank - Convertible Processor Type C - Celeron P - Pentium NIC (EN only) blank - NIC n - no NIC Core Logic (chip set) blank - BX a - 810 Hard Drive Capacity 10 - 10.0 GB 13 - 13.
Index A I additional documentation, viii icon,broken key, 3-4 INSPECT.
