DEC DECpc LPx Manuale utente
Service
Maintenance
Manual
DECpc LPx/LPx+
PC
K-MN-SD00000 19-JG00.A
Copyright Digital Equipment Corporation
All rights reserved
January 1996
MCS LOGISTICS
ENGINEERING
-
NIJMEGEN
THE NETHERLANDS
January 1996
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. No responsibility is assumed for the use or reliability of
software or equipment that is not supplied by Digital Equipment Corporation or its affiliated companies.
Restricted Rights: Use, duplication, or disclosure by the U.S. Government is subject to restrictions as set
forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS
252.227-7013.
Copyright Digital Equipment Corporation
All Rights Reserved
The following are trademarks of Digital Equipment Corporation:
DECpc and the Digital logo.
The following are third party trademarks:
MS-DOS and Windows and Windows NT and Windows NT Server are trademarks of Microsoft Corp.
Novell and Netware are trademarks of Novell, Inc.
SCO and Open Desktop are trademarks of The Santa Cruz Operation, Inc.
UNIX is a registered trademark of UNIX System Laboratories, Inc.
All other trademarks and registered trademarks are the property of their respective holders.
Created by:
MCS Logistics Engineering - Nijmegen
Printed in Ireland
Digital DECpc LPx/LPx+ Table of Contents
MCS Logistics Engineering - Nijmegen 3
Table of Contents
REVISION HISTORY........................................................................................................................................7
PREFACE..............................................................................................................................................................9
CHAPTER 1 PRODUCT DESCRIPTION ..................................................................................................11
PRODUCT INTRODUCTION ...................................................................................................................................11
PRODUCT MODELS INFORMATION .....................................................................................................................13
DECpc LPx Models Information...................................................................................................................13
DECpc LPx+ Models Information.................................................................................................................14
CHAPTER 2 SYSTEM UTILITIES & CONFIGURATION....................................................................15
SYSTEM UTILITIES ...............................................................................................................................................15
Using the System Utilities Diskette ...............................................................................................................16
Running SETUP.EXE.....................................................................................................................................16
EPP3SMC.EXE...............................................................................................................................................16
KP.EXE............................................................................................................................................................17
Copying KP.EXE onto Hard Disk .................................................................................................................17
Setting a Keyboard and Mouse Password.....................................................................................................17
Configuring the Computer..............................................................................................................................18
Running the BIOS Setup Utility ....................................................................................................................18
UPGRADE.EXE (DECpc LPx 560/566) ......................................................................................................18
Before Using UPGRADE.EXE (DECpc LPx 560/566)...............................................................................19
Creating a Recovery Diskette (DECpc LPx 560/566)..................................................................................19
Upgrading the Computer's BIOS (DECpc LPx 560/566) ............................................................................20
Helpful Hints...................................................................................................................................................21
BIOS SETUP UTILITY OPTIONS ..........................................................................................................................22
CHAPTER 3 SERVICE PROCEDURES.....................................................................................................31
SAFETY REQUIREMENTS .....................................................................................................................................31
RECOMMENDED TOOLS.....................................................................................Error! Bookmark not defined.
Other Materials Needed..................................................................................................................................32
Special Tools Required...................................................................................................................................32
Remedial Diagnostic Test Software...............................................................................................................32
Recommended Virus Detection and Cleanup Software...............................................................................32
ECO/FCO INFORMATION ....................................................................................................................................33
BIOS Version Information.............................................................................................................................33
UNLOCKING AND REMOVING COVER.................................................................................................................34
COMPUTER COMPONENTS ...................................................................................................................................35
EXPANSION SLOTS ...............................................................................................................................................36
Expansion slots for LPx Models....................................................................................................................36
LPx Expansion Slots.......................................................................................................................................36
Expansion slots for LPx+ Models..................................................................................................................37
LPx+ Expansion Slots ....................................................................................................................................37
Expansion slots for LPx 560/566 Models.....................................................................................................38
Table of Contents Digital DECpc LPx/LPx+
4MCS Logistics Engineering - Nijmegen
Px 560/566 Expansion Slots ..........................................................................................................................38
Installing Expansion Boards ..........................................................................................................................39
MAIN LOGIC BOARD JUMPERS ...........................................................................................................................40
LPx Main Logic Board Jumper Settings.......................................................................................................41
LPx Main Logic Board Jumper Locations....................................................................................................42
LPx+ Main Logic Board Jumper Settings.....................................................................................................43
LPx+ Main Logic Board Jumper Locations..................................................................................................44
LPx 560/566 Main Logic Board Jumper Settings........................................................................................45
LPx 560/566 Main Logic Board Jumper Locations.....................................................................................46
LPx 560/566 CPU Board Jumper Settings....................................................................................................47
LPx 560/566 CPU Board Jumper Locations.................................................................................................47
COMPUTER MEMORY CONFIGURATIONS ..........................................................................................................48
LPx and LPx+ Memory Configurations........................................................................................................48
LPx and LPx+ SIMM Socket Locations.......................................................................................................49
LPx 560/566 Memory Configurations ..........................................................................................................50
LPx 560/566 SIMM Socket Locations..........................................................................................................51
REMOVAL PROCEDURES .....................................................................................................................................52
Removing the 3½-Inch Diskette Drive..........................................................................................................52
Removing a 5¼-Inch Device .........................................................................................................................53
Removing a 3½-Inch Mass Storage Device (Internal Drive Bay)...............................................................54
Removing the Fan Pipe ..................................................................................................................................55
Removing the Fan /Speaker Assembly .........................................................................................................56
Removing the Main Logic Board ..................................................................................................................57
LPx Main Logic Board Connections.............................................................................................................57
LPx+ Main Logic Board Connections...........................................................................................................58
LPx 560/566 Main Logic Board Connections..............................................................................................59
Removing the CPU Module (LPx 560/566) .................................................................................................60
Removing the LPx(+) Power Supply ............................................................................................................61
Removing the Filler Panel..............................................................................................................................62
INSTALLATION PROCEDURES .............................................................................................................................63
Installing External Cache Memory................................................................................................................63
Installing a Higher Performance CPU (LPx/LPX+).....................................................................................65
Installing a Higher Performance CPU (LPx 560/566) .................................................................................66
REPLACEMENT PROCEDURES .............................................................................................................................67
Replacing the Computer Battery/Real Time Clock (RTC) (LPx)................................................................67
Replacing the Computer Battery (LPx+).......................................................................................................68
Replacing the Computer Battery/Real Time Clock (RTC) (LPx 560/566).................................................69
CONNECTING DISKETTE AND IDE DEVICES......................................................................................................70
Diskette/IDE Connections..............................................................................................................................71
CONNECTING SCSI DEVICES ..............................................................................................................................72
SCSI Connections...........................................................................................................................................72
Digital DECpc LPx/LPx+ Table of Contents
MCS Logistics Engineering - Nijmegen 5
CHAPTER 4 TROUBLESHOOTING..........................................................................................................73
INITIAL TROUBLESHOOTING ...............................................................................................................................73
BEEP CODES .........................................................................................................................................................74
Beep Codes for Fatal Errors...........................................................................................................................74
Beep Codes for Non-Fatal Errors...................................................................................................................75
POST AND BOOT MESSAGES..............................................................................................................................75
COMPUTER TROUBLESHOOTING .........................................................................................................................77
DISK DRIVE TROUBLESHOOTING .......................................................................................................................79
MONITOR TROUBLESHOOTING ...........................................................................................................................80
QAPlus/FE Error Messages............................................................................................................................81
CHAPTER 5 DEVICE MAPPING................................................................................................................83
Memory Map (LPx/LPx+) .............................................................................................................................83
Memory Map (LPx 560/566 Full Range)......................................................................................................84
Memory Map (LPx 560/566 PC Compatibility Range)...............................................................................84
I/O Address Map (LPx/LPx+)........................................................................................................................85
CPU I/O Address Map (LPx 560/566)..........................................................................................................85
I/O Address Map (LPx 560/566) ...................................................................................................................86
PCI Configure Space Address Map (LPx 560/566).....................................................................................86
Computer Interrupt Levels (LPx/LPx+)........................................................................................................86
Computer Interrupt Levels (LPx 560/566)....................................................................................................87
DMA Channel Assignment (all models).......................................................................................................87
CHAPTER 6 PASS / FAIL CRITERIA........................................................................................................89
APPENDIX A SERVICE NOTES.................................................................................................................91
APPENDIX B USEFUL INFORMATION...................................................................................................93
RELATED DOCUMENTATION ...............................................................................................................................93
ON-LINE BULLETIN BOARDS ..............................................................................................................................94
DOCUMENT FEEDBACK ..............................................................................................................................95
PERSONAL NOTES .........................................................................................................................................97
READERS COMMENTS........................................................................................................................................101
Table of Contents Digital DECpc LPx/LPx+
6MCS Logistics Engineering - Nijmegen
Table of Figures
Figure 3 - 1 Removing the Outside Cover.........................................................................................................34
Figure 3 - 2 LPX Computer Model Components..............................................................................................35
Figure 3 - 3 LPx Expansion Slots ......................................................................................................................36
Figure 3 - 4 LPx+ Expansion Slots....................................................................................................................37
Figure 3 - 5 LPx 560/566 Expansion Slots .......................................................................................................38
Figure 3 - 6 Installing Expansion Slots..............................................................................................................39
Figure 3 - 7 LPx Main Logic Board Jumper Locations....................................................................................42
Figure 3 - 8 LPx+ Main Logic Board Jumper Locations .................................................................................44
Figure 3 - 9 LPx 560/566 Main Logic Board Jumper Locations.....................................................................46
Figure 3 - 10 LPx 560/566 CPU Board Jumper Locations..............................................................................47
Figure 3 - 11 LPx and LPx+ SIMM Socket Locations.....................................................................................49
Figure 3 - 12 LPx 560/566 SIMM Socket Locations.......................................................................................51
Figure 3 - 13 Removing the 3½-Inch Diskette..................................................................................................52
Figure 3 - 14 Removing a 5¼-Inch Device.......................................................................................................53
Figure 3 - 15 Removing a 3½-Inch Mass Storage Device from the Internal Drive Bay................................54
Figure 3 - 16 Removing the Fan Pipe................................................................................................................55
Figure 3 - 17 Removing the Fan /Speaker Assembly.......................................................................................56
Figure 3 - 18 LPx Main Logic Board Connections ..........................................................................................57
Figure 3 - 19 LPx+ Main Logic Board Connections........................................................................................58
Figure 3 - 20 LPx 560/566 Main Logic Board Connections............................................................................59
Figure 3 - 21 Removing a CPU Module (LPx 560/566)..................................................................................60
Figure 3 - 22 Removing the LPx(+) Power Supply..........................................................................................61
Figure 3 - 23 Removing the LPx(+) Filler Panel..............................................................................................62
Figure 3 - 24 Installing External Cache Memory .............................................................................................64
Figure 3 - 25 Installing a Higher Performance CPU (LPx/LPx+)...................................................................65
Figure 3 - 26 Installing a Higher Performance CPU (LPx 560/566)...............................................................66
Figure 3 - 27 Replacing the Computer Battery /Real Time Clock (LPx)........................................................67
Figure 3 - 28 Replacing the Computer Battery (LPx+)....................................................................................68
Figure 3 - 29 Replacing the Computer Battery /Real Time Clock (LPx 560/566).........................................69
Figure 3 - 30 Diskette/IDE Connections ...........................................................................................................71
Figure 3 - 31 SCSI Connections ........................................................................................................................72
Digital DECpc LPx/LPx+ Revision History
MCS Logistics Engineering - Nijmegen 7
Revision History
Revision
Date
Description of Change
A01 Januari 96 First release of the Service Maintenance Manual describing the
DECpc LPx/LPx+ series computer. This manual also includes the
DECpc LPx 560/566.
Digital DECpc LPx/LPx+ Preface
MCS Logistics Engineering - Nijmegen 9
Preface
The DECpc LPx/LPx+ Service Maintenance Manual is a troubleshooting guide that can be used for
reference when servicing the DECpc LPx/LPx+ line of PC’s.
Digital Equipment Corporation reserves the right to make changes to the DECpc LPx/LPx+ 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.
CAUTION
Digital recommends that only A+ certified engineers attempt to repair this equipment.
All troubleshooting and repair procedures are detailed to support subassembly/module
level exchange. Because of the complexity of the indivual boards and subassemblies, no
one should attempt to make repairs at 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 warranty or
exchange allowances.
Digital DECpc LPx/LPx+ Product Description
MCS Logistics Engineering - Nijmegen 11
Chapter 1 Product Description
Product Introduction
DECpc LPx and LPx+ computers are high-performance personal computers equipped with the latest
microprocessor and VL-bus technology. They can be used as stand-alone computers, as clients, or as
servers in an network environment. Developed using modular CPU technology and offering a host of
high-performance options, the DECpc LPx/LPx+ offers the most advanced computer in its class.
DECpc LPx 560/566 computers are high-performance personal computers equipped with the latest
microprocessor and PCI local bus technology.
All DECpc LPx and LPx+ computers are industry-standard Intel i486 or Pentium microprocessor-based
PCs using a versatile full profile ISA-style enclosure. The computer features a modular CPU design that
allows easy upgrades to the latest available CPU technology.
DECpc LPx features:
♦ 4 MB system RAM, expandable up to 64 MB on motherboard
♦ Optional external cache memory expandable to 128 KB and 256 KB
♦ ZIF (Zero Insertion Force) socket for easy upgrade to 486 or Pentium
♦ Embedded IDE controller
♦ Overdrive upgrade P24T or overdrive CPU - the socket can also be inserted with SL enhanced 486 or
486 at 25 MHz or 30 MHz
♦ Modular design with a choice of two VESA-LB cards (S3805 or S3864)
♦ Supports up to five storage devices
♦ Six full-size, 16-bit ISA expansion slots, or five full-size, 16-bit ISA expansion slots and one VL local
bus slot, or four full-size, 16-bit ISA expansion slots and two VESA local bus slots
Product Description Digital DECpc LPx/LPx+
12 MCS Logistics Engineering - Nijmegen
DECpc LPx+ features:
♦ Energy Star compliant
♦ 4 MB system RAM, expandable up to 64 MB on motherboard
♦ Optional external cache memory expandable to 128 KB and 256 KB
♦ ZIF (Zero Insertion Force) socket for easy upgrade to 486 or Pentium
♦ Enhanced IDE allows hard disks bigger than 1024 cylinders
♦ Overdrive upgrade P24T or overdrive CPU - the socket can also be inserted with SL enhanced 486 or
486 at 25 MHz or 30 MHz
♦ Modular design with a choice of two VESA-LB cards (S3805 or S3864)
♦ Supports up to five storage devices
♦ Six full-size, 16-bit ISA expansion slots, or five full-size, 16-bit ISA expansion slots and one VL local
bus slot, or four full-size, 16-bit ISA expansion slots and two VESA local bus slots
DECpc LPx 560/566 features:
♦ Pentium CPU operating at 60 or 66 MHz
♦ 8 MB system RAM, expandable up to 128 MB on motherboard
♦ Standard 256 KB of secondary cache memory
♦ ZIF socket for CPU upgrades
♦ Supports up to five storage devices
♦ 4 ISA slots and 2 PCI 32-bit local bus slots or 3 ISA and 3 PCI 32-bit local bus slots
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