HP Deskpro /N Desktop PC 286/12N Deskpro Personal Computers Service Reference
HP Deskpro /N Desktop PC 286/12N Manual
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- HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 1
Deskpro Service Reference Guide - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 2
152611-001 123385-001 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 3
Deskpro Service Reference Guide - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 4
information in this guide is subject OF THIS MATERIAL. This guide contains information protected by copyright. No part of this guide may be photocopied or reproduced of their respective companies. The software described in this guide is furnished under a license agreement or nondisclosure agreement. - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 5
CONTENTS preface About This Guide Symbols and Conventions ...vii Technician Notes ...vii Additional Documentation ...viii chapter 1 Installing the Operating System 1.1 Microsoft Windows 95 or 98 1-1 1.2 Microsoft Windows NT Workstation 4.0 1-1 1.2.1 Installing - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 6
Remote Wakeup and Remote Shutdown 3-12 3.4.4 Replicating Original Setup 3-13 3.4.5 Dual-State Power Button 3-13 3.4.6 Power Management 3-13 3.4.7 Enhanced Support Software CD and World Wide Web Site 3-14 3.4.8 Compaq Integrated Software 3-14 3.5 Building Blocks and Partners 3-15 3.5.1 Desktop - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 7
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 ...I-1 Contents v - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 8
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 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 9
The following documentation is available to support these products: TUser Documentation TTechnical Training Guides TCompaq Service Advisories and Bulletins TCompaq QuickFind TTechnical Reference Guide TCompaq Service Quick Reference Guide TCompaq Maintenance & Service Guide viii About This - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 10
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 NT using a distribution share point over a network connection. Deskpro Service Reference Guide 1-1 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 11
integration of Windows NT for the computer model and include device drivers supported by Windows NT. When prompted for the I386 directory on the Diskette if the computer is equipped with the LS-120 drive, follow the instructions below: 1. Restart the computer using the Microsoft Windows NT Boot Disk - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 12
.com/products/registration and follow the instructions that appear on the screen. To Support Software CD and World Wide Web Site," for ordering information) Compaq Web Site at www.compaq.com Compaq Deskpro Supplement CD, which is supplied with many desktop models Deskpro Service Reference Guide - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 13
information needed about the computer system when contacting Compaq Customer Support. These tools can also be used to: Change 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). - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 14
2.1.1 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 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 15
changes to Removable Media, the computer will restart. Turn the computer off, then on, manually. Lists information regarding IDE devices connected to the system. ATAPI devices (CD-ROM, DVD-ROM 3.2, "Asset Tracking and Security" for more information. continued Deskpro Service Reference Guide 2-3 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 16
and USB ports and audio security. Enables/disables Network Service Boot. (Feature supported on select models only.) Allows you to set Asset advanced, disabled, or minimal. Allows you to enable/disable timeouts or manually select timeout values. Note: This selection will appear only when energy saver - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 17
and bus priority (ISA/PCI). Device Options Allows you to set printer mode (flexible/standard), NumLock state at power-on, and Erase-Eaze Keyboard support. PCI VGA Configuration Allows users to specify which VGA controller will be the "boot" or primary VGA controller. Appears only if there are - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 18
Windows), described later in this guide. Create a Diagnostics Diskette DOS into the diskette drive and follow the instructions on the screen. Computer Checkup (TEST) Support Center. Assist your Compaq authorized dealer, reseller, or service provider in analyzing the system by allowing the service - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 19
diagnostics diskette. See Section 2.2.1, "Create a Diagnostics Diskette," for instructions. 1. Cold boot your computer from the diagnostics diskette you have errors, or choose to print or file a log of errors. Follow the instructions on the screen as the diagnostic tests are run on the devices. To - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 20
2.2.4 Enhanced Compaq Insight Personal Edition (Windows) Enhanced Compaq Insight Personal Edition is a component of Intelligent Manageability that allows you to view: System overview AssetControl information Input devices Communications ports Storage devices Graphics information - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 21
problems yourself. 7. Click Print or Save the error information in case you need to contact your Compaq authorized dealer, reseller, or service documentation for instructions on making support telephone numbers, consult the Contacting Compaq Customer Support guide. Deskpro Service Reference Guide 2-9 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 22
in the Compaq factory, is flashed onto the ROM, and is then printed on the shipping label. Users and service providers may turn off the UUID number by following these instructions: 1. Turn on or restart the computer. In Windows, click Start Æ Shut Down Æ Restart the Computer. 2. When the F10=Setup - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 23
Guide (IMINST.HLP) and the online Intelligent Manageability Guide (INTMGT3.HLP). ✎ Support for with selective recovery of system software, configuration management and troubleshooting, and power management. Remote System Installation Remote System drive. Deskpro Service Reference Guide 3-1 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 24
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 are manufactured with the hardware and firmware required to fully support the DMI 2.0 standard. Compaq also offers several solutions for - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 25
The Smart Cover FailSafe Key is a device for manually disabling the Smart Cover Lock, is available from . Password Security The computer supports security password features, which instructions on the screen. 4. Before exiting, click File Æ Save Changes and Exit. Deskpro Service Reference Guide 3-3 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 26
displayed, you must turn the computer off, then on again, to access the utility. 3. Select Security, then Power-On Password and follow the instructions on the screen. 4. Before exiting, click File Æ Save Changes and Exit. Entering a Power-On Password To enter a power-on password the following steps - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 27
Passwords If you forget your password you cannot access the computer. Refer to the "Connectors, Jumpers, and Switches" chapter in the product-specific MSG for instructions on clearing passwords. Deskpro Service Reference Guide 3-5 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 28
is displayed, you must turn the computer off, then on again, to access the utility. 3. Select Security, then Smart Cover and follow the instructions on the screen. 4. Before exiting, click File Æ Save Changes and Exit. Smart Cover Lock The Smart Cover Lock is a software-controllable cover lock - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 29
device for your computer may also be available, through the cable lock provision. See your Guide to Features & Upgrades for more information on using and installing the cable lock provision. with ECC cache memory are available on select Compaq personal computers. Deskpro Service Reference Guide 3-7 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 30
System (DPS) is a diagnostic tool built into the hard drives installed in select Compaq Deskpro computers. DPS is designed to help diagnose problems that might result in unwarranted hard drive replacement. When Compaq Deskpro Computers are built, each installed hard drive is tested using DPS and - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 31
Support Guide. The Remote Management Administrators Guide is included with the Remote Management Administration Tools, and is available on the Support Support Guide. The Remote Management Administrators Guide is included with the Remote Management Administration Tools, and is available on the Support - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 32
. If the system ROM is valid, the system starts normally. If the system ROM fails the validation check, the FailSafe Boot Block ROM provides enough support to start the system from a ROMPaq diskette, which will program the system ROM with a valid image. Because there is no video or hard drive - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 33
off, then turn the power on. OFF OFF ON ROM upgrade failed. Try another ROMPaq diskette. If the light remains turned on, contact Compaq customer support. ON ON ON ROM upgrade successfully completed. Turn power off and back on to resume normal system operation. Keyboard Lights Deskpro - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 34
using Remote Wakeup and Remote Shutdown, refer to the online Remote Management Administrators Guide. The Remote Management Administrators Guide is included with the Remote Management Administration Tools, and is available on the Support Software CD or at the Compaq Web site at www.compaq.com. 3-12 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 35
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. Dual-State Power Button In -click on the Windows Desktop, then choose Properties. Deskpro Service Reference Guide 3-13 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 36
to have the serial number of the computer available. This number is necessary for all purchases. Compaq Integrated Software Additional support software is available on the Support Software CD and may be downloaded from the Compaq World Wide Web site at www.compaq.com. This software supplements the - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 37
supports the DMI standard. For more information on configuring the DMI software, refer to the online Intelligent Manageability Guide . Compaq's PC Lifecycle Solutions offer a comprehensive suite of tools and service which can help in more easily managing PC clients throughout their lifecycle - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 38
many computer connectors. Some of these connectors may not be used on the computer being serviced. Enhanced Keyboard Connector and Icon 65 4 KEY 3 21 Pin Signal 1 Data 2 3 (+) Receive Data 4 Unused 5 Unused 6 (-) Receive Data 7 Unused 8 Unused Deskpro Service Reference Guide A-1 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 39
Ethernet AUI Connector and Icon 87 65 43 21 15 14 13 12 11 10 9 Parallel Interface Connector and Icon 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 Pin Signal 1 Ground 2 Negative AUI Differential Collision 3 Positive AUI Differential Collision 4 Negative AUI - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 40
Pin 1 (Tip) 2 (Ring) 3 (Shield) Signal Audio_Left Audio_Right Ground Pin 1 (Tip) 2 (Ring) 3 (Shield) Signal Audio_In_Left Audio_In_Right Ground Pin 1 (Tip) 2 (Ring) 3 (Shield) Signal Audio_Out_Left Audio_Out_Right Ground Deskpro Service Reference Guide A-3 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 41
External Infrared Transceiver Connector and Icon 8 76 5 4 3 21 Pin Signal 1 Transmit 2 Receive 3 Ground 4 5V 5 Mode 6 Not Used 7 Not Used 8 Not used Monitor Connector 54321 10 9 8 7 6 15 14 13 12 11 Pin Signal 1 Red Analog 2 Green Analog 3 Blue Analog 4 Not - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 42
31 INTRQ 32 IOCS16 33 DA1 34 PDIAG (80-pin cable detect) 35 DA0 36 DA2 37 CS1FX 38 CS3FX 39 DASP 40 GROUND Deskpro Service Reference Guide A-5 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 43
Slimline CD-ROM Adapter Pin Signal 1 RESDRV_ 2 GROUND 3 DO7 4 D08 5 D06 6 D09 7 D05 8 D10 9 D04 10 D11 11 D03 12 D12 13 D02 14 D13 15 D01 16 D14 17 D00 Pin Signal 18 D15 19 GROUND 20 (KEY) Pin Signal 35 A0 36 A2 37 CS1FX Pin Signal 52 FP05 53 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 44
59 AD_STBO# AD_STBO 60 AD6 61 Ground 62 AD4 AD7 Ground AD5 63 AD2 AD3 64 Vddq Vddq 65 AD0 AD1 66 VREFGC VREFCG Deskpro Service Reference Guide A-7 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 45
Ultra SCSI Connector and Icon Pin 1-11 12 13 14 15-25 26 27 28 29 30 Signal Ground Reserved Open Reserved Ground DB0 DB1 DB2 DB3 DB5 Pin Signal 31 DB5 32 DB6 33 DB7 34 DBP 35 Ground 36 Ground 37 Reserved 38 TERMPWR 39 Reserved 40 Ground Pin Signal 41 ATN # 42 Ground 43 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 46
-5 V 19 +5 V 20 +5 V Pin Signal 11 3 V 12 -12 V 13 RTN 14 ON/STBY 15 RTN Pin Signal 16 RTN/RS 17 RTN 18 -5 V 19 5 V 20 5 V Deskpro Service Reference Guide A-9 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 47
24-Pin Power Connector 1 23 2 Pin Signal 1 +3.3 V 2 +3.3 V 3 RTN 4 +5 V 5 RTN 6 +5 V 24 Pin Signal 7 aux RTN 8 Fan OFF 9 +5 V aux 10 +12 V 11 3.3 Vaux 12 Fan CMD Pin Signal 13 +3.3V 14 -12 V 15 RTN 16 ON/STBY 17 RTN 18 RTN / (R/S) Pin Signal 19 RTN 20 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 48
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 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 49
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) Accrediting Agency EANSW OVE CEBC CSA DEMKO SETI UTE VDE Country Italy - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 50
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 set up the hard drive parameter table without translation. Deskpro Service Reference Guide C-1 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 51
Run Computer Setup (F10 Setup). Reset the date and time under Control Panel. If the problem persists, replace the RTC battery. 163-Time & Date Not Set 2S * L = the problem persists, replace the RTC battery. Check for proper placement of the CMOS jumper. continued Deskpro Service Reference Guide D-1 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 52
board. Replace memory modules with matched sets. 1. Verify proper memory module type. 2. Try another memory socket. 3. Replace memory module if problem persists. 213-Incompatible DIMM 2S Module in DIMM Socket(s) X,X, X * L = Long, S = Short A DIMM module in DIMM 1. Verify proper memory module - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 53
Graphics display controller. 1. Reseat the graphics card (if applicable). 2. Clear CMOS. 3. Verify the monitor is attached and turned on. 4. Replace the graphics controller. continued Deskpro Service Reference Guide D-3 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 54
POST Error Messages Continued Screen Message Beeps* 601-Diskette Controller Error None Probable Cause Diskette controller circuitry or floppy drive circuitry incorrect. Recommended Action 1. Run Computer Setup (F10 Setup). 2. Check and/or replace cables. 3. Clear CMOS. 4. Replace diskette - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 55
Detected * L = Long, S = Short Device IRQ address conflicts Reset the IRQ. with another device. Device IRQ address conflicts Reset the IRQ. with another device. continued Deskpro Service Reference Guide D-5 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 56
POST Error Messages Continued Screen Message Beeps* 1720-SMART Hard Drive Detects Imminent Failure None Probable Cause Hard drive is about to fail. (Some hard drives have a firmware patch that will fix an erroneous error message.) Recommended Action 1. Determine if hard drive is giving correct - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 57
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. Replace the system board - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 58
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. Replace the system board - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 59
the processor. 4. Replace the system board. 1801 None Processor not supported by Upgrade Bios to proper version. ROM Bios. Audible 1L, module. 2. Remove and reseat memory module. 3. See "Memory Problems" in Appendix F. Reflash the ROM using a ROMPaq diskette. Replace Service Reference Guide D-9 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 60
damage to system board. 5. Replace system board. 6. Replace power supply. System memory error. 1. Check memory module. 2. Remove and reseat memory module. 3. See the "Solving Memory Problems" section of this guide. Processor unseated. Reseat processor in system board. D-10 POST Error Messages - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 61
CPU not installed/fetching code ROM error Power supply overloaded Riser board not seated Memory error No video System board failure, prior to video Deskpro Service Reference Guide E-1 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 62
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 on some models) connected between the NIC and the riser/system board? Deskpro Service Reference Guide F-1 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 63
First, reset the date and time under Control Panel. If the problem persists, the real-time clock (RTC) battery may need to be Computer Setup. 2. The Smart Cover FailSafe Key, a device for manually disabling the Smart Cover Lock, is available from Compaq. You'll Troubleshooting Without Diagnostics - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 64
drive cannot read a diskette. A problem has occurred with a disk transaction. drive. The directory structure is bad, or there is a problem with a file. In Windows 95 or 98, run ScanDisk. computer reconfiguration directions in the "Hardware Installation Problems" section. If a diskette drive other than - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 65
Display Problem Screen is blank Possible Solution 1. Monitor is not turned on and the monitor light is not on. Turn on the blank. A screen blanking utility may be installed or energy saver features may be enabled. Press any key or type password. continued F-4 Troubleshooting Without Diagnostics - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 66
BIOS and in Windows using F10 Setup. 5. Try printing using the DOS command C:\>DIR>PRN. If printer works, problem is with the printer driver. Reload driver. 6. If the computer is on a network, you may not have paper tray and refill it if empty. Select online. Deskpro Service Reference Guide F-5 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 67
Computer Setup. If it is listed, the probable cause is a driver problem. If it is not listed, the probable cause is a hardware problem. 3. Check drive jumper settings. If the drive is a secondary drive that Ultra ATA hard drive using an 80-conductor cable. F-6 Troubleshooting Without Diagnostics - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 68
the Add New Hardware icon in the Control Panel and follow the instructions that appear on the screen. To reconfigure the computer in Windows new hardware, use the utility provided with the hardware. Problem A new device is not automatically recognized as part of Service Reference Guide F-7 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 69
DVD and CD-ROM Problem Cannot read compact disc. System will not boot from CD-ROM or DVD drive. Cannot eject compact disc (tray-load in the DVD drive Movie may be regionalized for a different country. Refer to the documentation that came with the device. F-8 Troubleshooting Without Diagnostics - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 70
Memory Problem System won't boot or does not function properly after installing additional memory modules Possible Solution Memory module is 2. There is not enough memory for the application. Check the memory requirements for the application or add more memory. Deskpro Service Reference Guide F-9 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 71
and that the other end of the cable is securely attached to the correct device. 2. There is a problem with the cable or a device at the other end of the cable. Ensure that the cable and Advanced menu, change the resource settings for the board. continued F-10 Troubleshooting Without Diagnostics - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 72
Network Problem Continued Problem Network controller stopped working when an expansion board was added to the computer. Possible Solution 1. Network The network controller is not configured properly. Run Computer Setup and modify the Embedded NIC Settings. Deskpro Service Reference Guide F-11 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 73
are unsure of the settings of the peripheral cards, you can isolate the source of the problem by temporarily removing all cards and other essential cards such as the disk controller. After that, , refer to the online Intelligent Manageability Guide. F-12 Troubleshooting Without Diagnostics - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 74
connector Double-stacked mouse/keyboard connector Top Mouse Bottom Keyboard Video connector Single USB connector Double-stacked USB Microphone jack Line-in jack continued Deskpro Service Reference Guide G-1 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 75
Reference Designators Continued Designator Component 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 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 76
(chip set) blank - BX a - 810 Hard Drive Capacity 10 - 10.0 GB 13 - 13.5 GB MB RAM 64 128 Removable Storage blank - none c - CD-ROM Deskpro Service Reference Guide H-1 - HP Deskpro /N Desktop PC 286/12N | Deskpro Personal Computers Service Reference - Page 77
Windows NT, installing, 1-1 Microsoft Windows, installing, 1-1 N network service boot, 3-2 O operating system, installing, 1-1 P password delete, Cover Sensor,protection level, 3-6 software protecting, 2-9 recovery, 2-10 Support Software CD ordering, 3-14 symbols and conventions, vii T technician
Deskpro Service
Reference Guide