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Summary of Contents for Digital Equipment VENTURIS 575
- Page 1 Service Maintenance Manual VENTURIS Pentium K-MN-SD00000-06-JG00.B MCS LOGISTICS ENGINEERING Copyright Digital Equipment Corporation NIJMEGEN All rights reserved THE NETHERLANDS February 1996...
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Page 2: Mcs Logistics Engineering - Nijmegen
The information in this document is subject to change without notice and should not be construed as a commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no responsibility for any errors that might appear in this document. The software, if any, described in this document is furnished under a license and may be used or copied only in accordance with the terms of such license. -
Page 3: Table Of Contents
...........................11 RODUCT NTRODUCTION ........................12 RODUCT ODELS NFORMATION VENTURIS 560 Models ..........................12 VENTURIS 575, FP575 and faster models ....................12 VENTURIS 575 E Models..........................13 CHAPTER 2 SYSTEM UTILITIES & CONFIGURATION..............15 ...............................15 YSTEM TILITIES Before Using System Utilities and Video Drivers ..................15 PHLASH.EXE..............................16 Creating a Crisis Recovery Diskette ......................16... - Page 4 VENTURIS Pentium version 1.0 board Memory Configurations ..............45 VENTURIS Pentium version 1.0 board SIMM Sockets Locations ............45 VENTURIS Pentium version 2.0 board Memory Configurations ..............46 VENTURIS Pentium version 2.0 board SIMM Sockets Locations ............47 VENTURIS 575 E board Memory Configurations ..................47 ........................48 EMOVAL AND EPLACEMENT Opening the VENTURIS Slimline Device Bay &...
- Page 5 Digital VENTURIS Pentium PC Table of Contents CHAPTER 4 TROUBLESHOOTING......................61 ..........................61 NITIAL ROUBLESHOOTING .................................62 ODES POST ..........................62 ESSAGES .........................64 OMPUTER ROUBLESHOOTING ........................68 RIVE ROUBLESHOOTING ...........................68 ONITOR ROUBLESHOOTING QAPlus/FE Error Messages..........................69 CHAPTER 5 DEVICE MAPPING........................71 CPU Memory Address Map (Full Range).....................71 I/O Address Map.............................72 Computer Interrupt Levels ..........................73 DMA Channel Assignment ..........................73...
- Page 6 Table of Contents Digital VENTURIS Pentium PC Table of Figures Figure 3 - 1 Unlocking the Cover ........................34 Figure 3 - 2 Releasing the Cover........................34 Figure 3 - 3 Removing the Cover........................34 Figure 3 - 4 VENTURIS Pentium Slimline models..................35 Figure 3 - 5 VENTURIS Pentium Full Profile Models ..................36 Figure 3 - 6 VENTURIS Pentium Slimline Expansion Slots................37 Figure 3 - 7 VENTURIS Pentium Full Profile Expansion Slots..............38...
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Page 7: Revision History
Digital VENTURIS Pentium PC Revision History Revision History Revision 0.0 This was the original release of the Service Maintenance Manual describing the VENTURIS 486 and VENTURIS Pentium series computer in its original configuration. The original Service Maintenance Manual has been split into two Service Maintenance Revision A01 Manuals;... -
Page 8: Preface
VENTURIS Pentium line of PC’s. Digital Equipment Corporation reserves the right to make changes to the Digital VENTURIS Pentium series without notice. Accordingly, the diagrams and procedures in this document may not apply to the computer(s) to be serviced since many of the diagnostic tests are designed to test more than one product. -
Page 9: Chapter 1 Product Description
Digital VENTURIS Pentium PC Product Description Chapter 1 Product Description Product Introduction The VENTURIS Pentium computers are high-performance personal computers featuring the latest in computing technology. They can be used as stand-alone computers, as clients, or as servers in a network environment. -
Page 10: Product Models Information
VENTURIS 560 Models Swedish. Product Model Memory Cache Options VENTURIS 560 FR-856EC-AD 1.44MB None None FR-856E*-WB 1.44MB 270MB 256KB VENTURIS 575, FP575 and faster models Product Model Memory Cache Options VENTURIS 575 FR-920**-WB 1.44MB 420MB 256KB FR-920**-WD 1.44MB 840MB 256KB FR-920**-WE 1.44MB... -
Page 11: Venturis 575 E Models
Digital VENTURIS Pentium PC Product Description VENTURIS 575, FP575 and faster models (continued) Product Model Memory Cache Options FR-927**-** VENTURIS FP 5120 VENTURIS FR-928**-** 5133 FR-929**-** VENTURIS FP 5133 FR-92D**-** VENTURIS 5150 VENTURIS FP FR-92E**-** 5150 FR-92F**-** VENTURIS 5166 FR-92G**-**... -
Page 12: Before Using System Utilities And Video Drivers
Digital VENTURIS Pentium PC Utilities & Configuration Chapter 2 System Utilities & Configuration System Utilities This chapter describes how to use the utilities and video drivers supplied with the VENTURIS Pentium computer. In most cases, these utilities and drivers have been factory installed as image files on the hard disk drive. -
Page 13: Phlash.exe
Utilities & Configuration Digital VENTURIS Pentium PC PHLASH.EXE All VENTURIS Pentium computers have BIOS software in a read-only, non-volatile memory (ROM) chip. The BIOS initializes hardware and boots the operating system when the computer is switched on. The BIOS also provides access to other devices such as keyboard and disk drives. The computer comes equipped with flash memory. -
Page 14: Using The Crisis Recovery Diskette
Digital VENTURIS Pentium PC Utilities & Configuration Using the Crisis Recovery Diskette The crisis recovery diskette must be used only if the computer's BIOS fails or if a BIOS upgrade was unsuccessful. ♦ POST detects an error after a normal boot cycle or a BIOS upgrade. ♦... -
Page 15: Epp3Smc.exe
Utilities & Configuration Digital VENTURIS Pentium PC Press [Enter] to continue. Else, press [Esc] to cancel. Once [Enter] has been pressed, PHLASH.EXE automatically updates the computer's BIOS. After the flashing process completes, the computer automatically reboots itself so changes immediately take effect. Remove the system utilities diskette. -
Page 16: Smtr.exe
Digital VENTURIS Pentium PC Utilities & Configuration The following procedure describes how to access SMODE: Turn on or reboot the computer and allow POST to complete. Insert the VGA Utilities and DOS Video Drivers diskette into drive A. Type A: then press [Enter]. Type CD\UTILS and press [Enter]. -
Page 17: Dos Video Drivers
Utilities & Configuration Digital VENTURIS Pentium PC DOS Video Drivers These files contain installation instructions and, where applicable, the usage and performance tips for various DOS and CAD applications. Installing DOS or CAD application video drivers differ with each software application. Specific instructions are located in the README.TXT file and in the appropriate DOS or CAD application directories and files. -
Page 18: Running The Bios Setup Utility
Digital VENTURIS Pentium PC Utilities & Configuration Running the BIOS Setup Utility The BIOS Setup utility enables to select and permanently store information about the computer's hardware and software in the battery-backed memory of the CMOS RAM. This information takes effect each time the computer boots and can be changed each time you run setup. -
Page 19: Bios Setup Utility Options
Utilities & Configuration Digital VENTURIS Pentium PC BIOS Setup Utility Options Specific notes pertaining to some Setup options may be obtained by clicking on colored entries in the "Menu Field" column below and/or by clicking on the icons in the rightmost column. Main Menu Options Menu Fields Settings... -
Page 20: Fixed Disk Setup Optionside Adapter 0/1 Master/Slave
Digital VENTURIS Pentium PC Utilities & Configuration Boot Options (continued) Menu Fields Settings Comments Enabled Enabling this option causes the computer to display configuration Summary screen Disabled parameters (in the form of a summary screen) during boot. Fixed Disk Setup OptionsIDE Adapter 0/1 Master/Slave Menu Fields Settings Comments... -
Page 21: Keyboard Features
Utilities & Configuration Digital VENTURIS Pentium PC Keyboard Features Menu Fields Settings Comments Auto Turns NumLock on or off each time the computer boots. NumLock Note: When Auto has been selected, the computer will turn on NumLock if it detects a numeric keypad. Key click Disabled Enables or disables the audible key click feature. -
Page 22: Advanced Chipset Control
Digital VENTURIS Pentium PC Utilities & Configuration Memory and Cache Options (continued) Menu Fields Settings Comments Enabled The main logic board reserves an area of DRAM for a copy of video Video BIOS shadow Disabled BIOS ROM. This DRAM called "shadow memory" is write-protected and has the same addresses as the video BIOS ROM locations. -
Page 23: Integrated Peripherals
Utilities & Configuration Digital VENTURIS Pentium PC Advanced Chipset Control (continued) Menu Fields Settings Comments Enabled Use with VGA add-in cards to inform card not to claim VGA palette VGA feature connector writes. Disabled Use to inform VGA add-in cards to claim VGA palette writes. Enabled Select Enabled if the application requires VGA IRQ. -
Page 24: Large Disk Access Mode
Digital VENTURIS Pentium PC Utilities & Configuration Integrated Peripherals (continued) Menu Fields Settings Comments Auto Enables or disables onboard serial port 2 at the specified address. Serial port 2 Disabled Select Auto unless interrupts IRQ 4 and/or IRQ 3 have been allocated 3F8, IRQ 4 as a computer resource. -
Page 25: Power Options
Utilities & Configuration Digital VENTURIS Pentium PC Power Options Menu Fields Settings Comments Enabled Enable this field to use any of the power management options. If this Power management Disabled field is enabled and the other fields are disabled, only minimal power reduction is affected. -
Page 26: Security Options
Digital VENTURIS Pentium PC Utilities & Configuration Security Options Menu Fields Settings Comments Enabled Tells whether or not the supervisor's password is enabled or disabled. Supervisor password is Disabled User password Enabled Tells whether or not the user's password is enabled or disabled. Disabled Press [Enter] Enables to set a supervisor password. - Page 27 Utilities & Configuration Digital VENTURIS Pentium PC Security Options (continued) Menu Fields Settings Comments Press [Enter] Press [Enter] to enter a custom sign on banner that displays during Custom sign on banner POST. For example, you might enter “Welcome to John’s machine”. Up to two lines of text may be entered.
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Page 28: Chapter 3 Service Procedures
Digital VENTURIS Pentium PC Service Procedures Chapter 3 Service Procedures Safety Requirements WARNING Static electricity collects on non-conductors such as paper, cloth, or plastic. A static discharge can be damaging even though you often cannot see or feel it. The following safety precautions must be observed to insure product and personal safety and prevent damage to circuit boards and/or components: ♦... -
Page 29: Recommended Tools
Service Procedures Digital VENTURIS Pentium PC Recommended Tools The following tools will be needed for servicing Digital PC systems. Note that test equipment must be in calibration. ♦ Multimeter (4 1/2 digit) ♦ A philips screwdriver ♦ An antistatic wrist strap Other Needed Materials Cleaning agent should be an all purpose cleaner that is used in-house. -
Page 30: Eco/Fco Information
Digital VENTURIS Pentium PC Service Procedures ECO/FCO Information BIOS version information. Refer to the Digital DECpc Bulletin Board Support , for the latest information on BIOS upgrades Network locations: North America, South America, Australia and New Zealand: PCBUHD::DKB300:[WC30.BBSFILES] Europe, Africa, Middle and Far East: SUTRA::D6:[PUBLIC]. -
Page 31: Unlocking And Removing Cover
Service Procedures Digital VENTURIS Pentium PC Unlocking and Removing Cover WARNING You might injure yourself or damage the computer if you attempt to remove the cover before unplugging ac and monitor power cords. The computer's cover must be removed prior to installing any hardware option. To remove the cover: Unlock cover. -
Page 32: Computer Components
Digital VENTURIS Pentium PC Service Procedures Computer Components VENTURIS Pentium Slimline Models Legend Description Power supply Main logic board 3½-inch diskette drive Front access drive bay Front internal drive bay Riser card, ISA/PCI Rear internal drive bay (under power supply) Figure 3 - 4 VENTURIS Pentium Slimline models MCS Logistics Engineering - Nijmegen... -
Page 33: Venturis Pentium Full Profile Models
Service Procedures Digital VENTURIS Pentium PC VENTURIS Pentium Full Profile Models Legend Description Power supply Main logic board 3½-inch diskette drive Front access drive bay Front internal drive bay Riser card, ISA/PCI. Rear internal drive bay (under power supply) Front-access drive bay that supports two PCMCIA slots D E C 006 82-4 Figure 3 - 5 VENTURIS Pentium Full Profile Models MCS Logistics Engineering - Nijmegen... -
Page 34: Expansion Slots
Digital VENTURIS Pentium PC Service Procedures Expansion Slots The computer automatically assigns the necessary resources to any installed Plug and Play-compatible expansion board so it operates at maximum performance. If you plan on installing non-Plug and Play expansion boards, it may be necessary to manually set jumpers on the board based on the computer resources already allocated. -
Page 35: Venturis Pentium Full Profile Models Expansion Slots
Service Procedures Digital VENTURIS Pentium PC VENTURIS Pentium Full Profile Models Expansion Slots The VENTURIS Pentium Full Profile riser card contains six slots for installing: ♦ Four ISA expansion boards and one PCI expansion board or ♦ Three ISA expansion boards and two PCI expansion boards. Expansion Slot* Slot Type Description... -
Page 36: Main Logic Board Jumpers
Digital VENTURIS Pentium PC Service Procedures Main Logic Board Jumpers Jumper pins allow to set specific computer parameters. They are set by changing the pin location of jumper blocks. Note that the square pin of each jumper block is pin 1. A jumper block is a small plastic-encased conductor (shorting plug) that slips over the pins. -
Page 37: Venturis Pentium Version 1.0 Main Logic Board Jumper Settings
Service Procedures Digital VENTURIS Pentium PC VENTURIS Pentium version 1.0 Main Logic Board Jumper Settings Settings shown in bold italics are factory defaults. Feature Description Setting CPU clock 75 MHz 50 MHz J21 & J22 open 90 and 120 MHz 60 MHz J21 open, J22 jumpered J21 &... -
Page 38: Venturis Pentium Version 1.0 Main Logic Board Jumper Locations
Digital VENTURIS Pentium PC Service Procedures VENTURIS Pentium version 1.0 Main Logic Board Jumper Locations Figure 3 - 9 VENTURIS Pentium version 1.0 Main Logic Board Jumper Locations MCS Logistics Engineering - Nijmegen... -
Page 39: Venturis Pentium Version 2.0 Main Logic Board Jumper Settings
Service Procedures Digital VENTURIS Pentium PC VENTURIS Pentium version 2.0 Main Logic Board Jumper Settings Settings shown in bold italics are factory defaults. Feature Description Setting CPU clock 75 MHz 50 MHz J21 & J22 open 90, 120, 150 and 180 MHz 60 MHz J21 open, J22 jumpered 66 MHz... -
Page 40: Venturis Pentium Version 2.0 Main Logic Board Jumper Locations
Digital VENTURIS Pentium PC Service Procedures VENTURIS Pentium version 2.0 Main Logic Board Jumper Locations 1 2 3 DEC00683-4 Figure 3 - 10 VENTURIS Pentium version 2.0 Main Logic Board Jumper Locations MCS Logistics Engineering - Nijmegen... -
Page 41: Computer Memory Configurations
Service Procedures Digital VENTURIS Pentium PC Computer Memory Configurations Adding more memory allows the computer to run larger, more complicated software and to run it faster. VENTURIS 560 Memory Configurations The VENTURIS 560 computer comes with at least 4 MB of memory. This amount can be increased up to 64 MB. -
Page 42: Venturis Pentium Version 1.0 Board Memory Configurations
Digital VENTURIS Pentium PC Service Procedures VENTURIS Pentium version 1.0 board Memory Configurations The VENTURIS Pentium version 1.0 board computer comes with 8 MB of memory hardwired to the main logic board. This amount can be increased up to a maximum of 128 MB using the two SIMM sockets on the main logic board. -
Page 43: Venturis Pentium Version 2.0 Board Memory Configurations
Service Procedures Digital VENTURIS Pentium PC VENTURIS Pentium version 2.0 board Memory Configurations The VENTURIS Pentium version 2.0 board computer comes with 8 MB of memory hardwired to the main logic board. This amount can be increased up to a maximum of 128 MB using the four SIMM sockets on the main logic board (Figure 3 - 13). -
Page 44: Venturis Pentium Version 2.0 Board Simm Sockets Locations
VENTURIS 575 E board Memory Configurations The VENTURIS 575 E computer comes with 8 MB of EDO memory hardwired to the main logic board. This amount can be increased up to a maximum of 128 MB using the two SIMM sockets on the main logic board. -
Page 45: Part Removal And Replacement
Part Removal and Replacement Service Procedures Digital VENTURIS Pentium PC Opening the VENTURIS Slimline Device Bay & Power Supply Subassembly Open the device bay & power supply subassembly in order to install, remove and/or connect certain components and peripheral devices. To open the subassembly: Turn off the computer. -
Page 46: Opening The Venturis Full-Profile Device Bay & Power Supply Subassembly
Digital VENTURIS Pentium PC Service Procedures Opening the VENTURIS Full-Profile Device Bay & Power Supply Subassembly Open the device bay & power supply subassembly in order to install, remove and/or connect certain components and peripheral devices. To open the subassembly: Turn off the computer. -
Page 47: Removing The 3½-Inch Diskette Drive (All Models)
Service Procedures Digital VENTURIS Pentium PC Removing the 3½-Inch Diskette Drive (All Models) To remove the 3½-inch diskette drive: Turn off the computer. Disconnect external devices, ac power and monitor power. Unlock and remove cover. Remove two screws securing the right side of diskette drive to chassis. Open the device bay &... -
Page 48: Removing The Venturis Pentium Main Logic Board
Digital VENTURIS Pentium PC Service Procedures Removing the VENTURIS Pentium Main Logic Board To remove the main logic board: Turn off the computer. Disconnect external devices, ac power and monitor power. Unlock and remove cover. Remove all connectors. Remove all expansion boards. Remove the riser card and bracket. -
Page 49: Removing The Venturis Power Supply
Service Procedures Digital VENTURIS Pentium PC Removing the VENTURIS Power Supply To remove the power supply: Perform the steps necessary to open the device bay and power supply subassembly. Remove power supply, IDE and diskette cabling from main logic board noting their proper orientation. -
Page 50: Installation Procedures
Digital VENTURIS Pentium PC Service Procedures Installation Procedures Installing a Higher Performance CPU The VENTURIS Pentium main logic board is equipped with a Pentium processor installed in a ZIF socket. To install a higher performance CPU: Turn off the computer. Disconnect external devices, ac power and monitor power. -
Page 51: Installing Video Memory
2 MB by installing two, MB video memory DRAM chips in the designated sockets on the main logic board. (The Video Memory upgrade is not possible on the Venturis 575 E models.) To install the video memory upgrade chip: Turn off the computer. -
Page 52: Replacement Procedures
Digital VENTURIS Pentium PC Service Procedures Replacement Procedures Replacing the Real-Time Clock (RTC)/Lithium Battery The VENTURIS Pentium computer comes with either a Lithium 3V dc wafer-style battery or a Dallas RTC. If the computer ever fails to retain the correct date, time or configuration settings when it is turned on, replace the installed device. -
Page 53: Figure 3 - 25 Replacing The Lithium Battery
Service Procedures Digital VENTURIS Pentium PC To replace the Lithium battery, perform the following: Record computer configuration settings using the BIOS Setup utility. Turn off the computer, disconnect external devices, ac power and monitor power. Remove cover and carefully lift up on retaining clip and remove old battery. Install new battery. -
Page 54: Connecting Diskette And Ide Devices
Digital VENTURIS Pentium PC Service Procedures Connecting Diskette and IDE Devices NOTE If only one IDE device is installed, make sure to use the ribbon cable connector furthest from the main logic board connector. Also, when IDE devices have been installed in both internal drive bays, make sure that the ribbon cable has no twists between the two IDE drives. -
Page 55: Diskette Data Cable Connections
Service Procedures Digital VENTURIS Pentium PC Diskette Data Cable Connections Legend Diskette Drive Component Power supply Power connections Diskette drive connections Main logic board diskette drive connection Diskette drives DE C00687-2 Figure 3 - 26 Diskette Drive Data Cable Connections MCS Logistics Engineering - Nijmegen... -
Page 56: Ide Data Cable Connections
Digital VENTURIS Pentium PC Service Procedures IDE Data Cable Connections Legend IDE Drive Component Power supply Power connections IDE hard disk drive connections Main logic board IDE drive connections IDE hard disk drive IDE CD-ROM drive DEC00688-2 Figure 3 - 27 IDE Data Cable Connections MCS Logistics Engineering - Nijmegen... -
Page 57: Chapter 4 Troubleshooting
Digital VENTURIS Pentium PC Troubleshooting Chapter 4 Troubleshooting The following pages provide initial troubleshooting procedures and tables listing specific problems, probable causes and recommended actions to take if the computer fails after configuration or after installing optional hardware or software. Refer to the documentation supplied with additional options when experiencing problems with specific options that have been installed. -
Page 58: Beep Codes
Troubleshooting Digital VENTURIS Pentium PC Beep Codes When POST finds an error and cannot display a message, the computer's speaker emits a series of beeps to indicate the error. During POST, if the video configuration fails or if an external ROM module fails a checksum test, the computer beeps three times. - Page 59 Digital VENTURIS Pentium PC Troubleshooting POST and Boot Messages (continued) Message Description/Solution nnnn Cache SRAM Passed Where nnnn is the amount of computer cache (in kilobytes) that tested successfully. Run the BIOS Setup Utility. Check all connections. If the problem Diskette drive A error Diskette drive B error persists-replace the diskette drive.
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Page 60: Computer Troubleshooting
Troubleshooting Digital VENTURIS Pentium PC POST and Boot Messages (continued) nnnn Shadow RAM passed Where nnnn is the amount of shadow RAM (in kilobytes) that tested successfully. Replace the battery and then run the BIOS Setup utility to restore System battery is dead Replace and run SETUP previous configuration information. - Page 61 Digital VENTURIS Pentium PC Troubleshooting Computer Troubleshooting (continued) Problem Possible Cause Action Brightness and contrast controls Adjust the brightness and contrast controls. Power is on, but there is no are not correctly set. screen display The monitor-off timer has shut Press [Shift] to reactivate monitor.
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Page 62: Troubleshooting
Troubleshooting Digital VENTURIS Pentium PC Computer Troubleshooting (continued) Problem Possible Cause Action Keyboard is password protected. Enter the keyboard password. No response to keyboard Keyboard is connected to the Power down the computer and connect the commands mouse port. keyboard to the keyboard port. No response to Mouse is password protected. - Page 63 Digital VENTURIS Pentium PC Troubleshooting Computer Troubleshooting (continued) Problem Possible Cause Action Operating system software is not Install the appropriate operating system. Computer does not boot from installed on the IDE hard disk drive. an IDE hard disk drive IDE hard disk drive is not Format the IDE hard disk drive or partition the correctly formatted or the IDE hard disk drive using the supplied operating...
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Page 64: Disk Drive Troubleshooting
Troubleshooting Digital VENTURIS Pentium PC Disk Drive Troubleshooting Problem Possible Cause Action IDE/SCSI hard Incorrect disk drive jumper Refer to the supplied kit installation instructions. settings. disk drive cannot read or Loose or incorrectly installed Make sure all cables are correctly installed. write information cables. -
Page 65: Qaplus/Fe Error Messages
Digital VENTURIS Pentium PC Troubleshooting Monitor Troubleshooting (continued) Problem Possible Cause Action Monitor incorrectly adjusted. Adjust accordingly. Distorted- rolling-or Monitor signal cable incorrectly Straighten any bent connector pins and then flickering screen display- installed. reconnect. or wrong/ uneven color Color monitor Computer was turned on before Turn off the computer, turn on the monitor, then the monitor was turned on. - Page 66 Troubleshooting Digital VENTURIS Pentium PC QAPlus/FE Error Messages (continued) Component Messages Solution Floppy Drives Failed. Check connections, Replace drive. Floppy drive Clock Stopped. Run Setup. Battery/clock Invalid Date. Replace battery/clock. RTC Interrupt Failed. CMOS Clock Test Failed. Change time from Setup menu in QAPLUS. CMOS Serial port COM port failed.
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Page 67: Chapter 5 Device Mapping
Digital VENTURIS Pentium PC Device Mapping Chapter 5 Device Mapping This section provides a series of tables listing mapping and address information related to computer memory and various main logic board devices (keyboard controller, interrupt controller, DMA controller, etc.). The computer's memory and address locations are allocated at the factory to operate within a standard PC environment. -
Page 68: I/O Address Map
Device Mapping Digital VENTURIS Pentium PC I/O Address Map Range (hexadecimal) Function DMA controller one 000 - 00F Interrupt controller one 020 - 021 040 - 043 Interval timer 060 - 06F Keyboard controller Real-time clock (RTC), NMI 070 - 07F DMA page register 080 - 08F Interrupt controller two... -
Page 69: Computer Interrupt Levels
Digital VENTURIS Pentium PC Device Mapping Computer Interrupt Levels Interrupt Number Interrupt Source Timer tick IRQ0 Keyboard controller IRQ1 IRQ2 Cascade interrupt IRQ3 COM2, COM4 (if enabled) COM1, COM3 (if enabled) IRQ4 LPT2 IRQ5 Diskette drive (if enabled) IRQ6 IRQ7 LPT1, LPT3 (if enabled) IRQ8 Reserved... -
Page 70: Chapter 6 Pass / Fail Criteria
Digital VENTURIS Pentium PC Pass / Fail Criteria Chapter 6 Pass / Fail Criteria As Final Acceptance Test the following tests should be run to meet the Pass/Fail criteria: Successful completion of the POST tests. Successful completion of the following QAPLUS/fe module tests (one pass): ♦... -
Page 71: Appendix A Service Notes
Digital VENTURIS Pentium PC Service Notes Appendix A Service Notes This appendix contains the current Service Notes for the VENTURIS Pentium product line. Symptom: System does not boot. Problem: Riser card (3 or 5 slot) presses main board to hard; the result is a short circuit to the metal chassis. -
Page 72: Appendix B Useful Information
VENTURIS 560 User's Guide (Italian) ER-856WW-UI VENTURIS 560 User's Guide (German) ER-856WW-UG VENTURIS 560 User's Guide (Spanish) ER-856WW-US VENTURIS 575 & FP575 User's Guide (English) ER-920WW-UA VENTURIS 575 & FP575 User's Guide (French) ER-920WW-UP VENTURIS 575 & FP575 User's Guide (Italian) ER-920WW-UI VENTURIS 575 &... -
Page 73: Document Feedback
We will do our best to make this document a valuable support to your service efforts for Digital. Please fill-out the reader feedback form and send or fax it to: Digital Equipment Parts Center b.v. Att: MCS Logistics Engineering Call Desk P.O. -
Page 74: Readers Comments
READERS COMMENTS Digital VENTURIS Pentium Service Maintenance Manual K-MN-SD00000-06-JG00.B This form is for documents only. Commitments submitted on this form are used at Digital’s direction. Did you find errors in this manual? If so, specify by page............................................................................................................. What is your general reaction to this manual (format, completeness, organization, etc.)? ....................................
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