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Compaq
386
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System Boards
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386
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Display Characteristics
Install
Parts list
Error codes
Problem Isolation Flowchart
Error Detection and Correction
Maintenance
Mass Storage Configurations
Advanced Diagnostics Program
Setup Program
Page 218
Image 218
8-2
Chapter 8,
Jumper Settings and Switch Settings
8.2. SYSTEM BOARDS
Figure
8-1.
COMPAQ DESKPRO 386 Personal Computer System Board Version 1 (assy. no. 000401).
Addendum
108431-001
(11-88)
to Manual No.
108033-003
Page 217
Page 219
Page 218
Image 218
Page 217
Page 219
Contents
Maintenance and Service Guide
Compaq Deskpro 386 Personal Computer
Page
Maintenance and Service Guide
Page
Connector
Preface
Summary of Text
Page
Required Tools and Supplies
Additional Information
Contents
Setup Program
Illustrated Parts Catalog
Jumper Settings and Switch Settings
Mass Storage Configurations
Page
Figures
Xvi
Xvii
Xviii
Xix
Tables
Xxi
Page
Addendum 108431-001 11-88 to Manual No
Page
Operating and Performance Specifications
Introduction
Compaq Deskpro 386 Personal Computer System Unit
84-KEY Keyboard
Compaq Enhanced Keyboard
Compaq DUAL-MODE Monitor
Compaq Color Monitor
Compaq Video Graphics Color Monitor
Maintenance and Service Guide
Compaq Video Graphics Monochrome Monitor
Maintenance and Service Guide
360-KBYTE 5¼-INCH Diskette Drive
10 1.2-MEGABYTE 5¼-INCH Diskette Drive
11 1.44-MEGABYTE 3½-INCH Diskette Drive
12 40-MEGABYTE Fixed Disk Drive
13 70-MEGABYTE Fixed Disk Drive
14 130-MEGABYTE Fixed Disk Drive
15 40-MEGABYTE Fixed Disk Drive Backup
16 135-MEGABYTE Fixed Disk Drive Backup Tape
17 300-/600-MEGABYTE Fixed Disk Drive Expansion Unit
18 300-MEGABYTE Fixed Disk Drive for the Expansion Unit
Page
Contents
Page
POWER-ON SELF-TEST POST/PROBLEM Isolation
POWER-ON SELF-TEST Post
Preliminary Steps to Problem Isolation
Problem Isolation Flowchart
Complete Preliminary Steps Turn AC power Switch on Did Yes
Brightness
See Chapter
To E
Did you Yes Hear other Audible error Codes beeps?
Power-On Self-Test Post/Problem Isolation
When to RUN Setup HOW to RUN Setup
Page
Setup Program
When to RUN Setup
HOW to RUN Setup
Advanced Diagnostics Program
Addendum 108431-001 11-88 to Manual No
Addendum 108431-001 11-88 to Manual No
Addendum 108431-001 11-88 to Manual No
Advanced Diagnostics Program
Preliminary Steps
Run the Diagnostic Tests
Main Menu
Format a Diskette
Run the Setup Program
Clear Configuration and Run the Setup Program
Display ROM Versions
Test Logging Utilities Menu
Advanced Diagnostics Program
System Test Menu
Test Selection Menu
Processor
Parallel Interface
Memory
Keyboard
Video
Matrix of Possible Video Tests
CGA DMM Color Mono MDA
80 x 25 Display
Display Characteristics
Video Controller
Character Set
40 x 25 Display
320 x 200 Standard Graphics
640 x 200 Standard Graphics
Lightpen
Display Memory Pages
Gray Scale/Color
Noise
Enhanced Display Characteristics
640 x 200 Color Graphics
640 x 350 Color Graphics
Monochrome Text
640 x 350 Monochrome Graphics
Color Mode
640 x 480 Graphics
Diskette Drive
Asynchronous Communications Interface
Format a Diskette for diagnostic use only
Monochrome Video Board
Diskette Change Line
Modem
Auto Originate Mode
Auto Answer Mode
Modem Internal Loopback
Write/Read/Compare on Test Cylinder
Fixed Disk Drive
Modem Direct Connect
Seek
Run All the Above Tests
Error Detection and Correction
Head Select
Read Verify
Conditional Format
Unconditional Format
Display Current Interleave
Surface Analysis
Change Interleave
Fixed Disk Drive Backup Tape
Enhanced Color Graphics
Fixed Disk Drive Backup
Fixed Disk Drive Backup Media
Video Graphics Controller
Page
Contents
Page
Missing
Error Messages and Codes
Power-On Self-Test Error Messages
Diagnostics
Advanced Diagnostics Error Codes
Missing
Missing
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Advanced Diagnostics Error Codes
Memory Error Codes
Memory error codes in the following tables are in the format
Memory Error Locations on the 32-Bit System Memory Board
Addendum 108431-001 11-88 to Manual No
Maintenance and Service Guide
Extdisk Messages
Extdisk Messages
Page
Contents
Page
Illustrated Parts Catalog
Spare Parts LIST, U.S
Spare Parts List, U.S
Spare Parts List, U.S
Spare Parts List, U.S
MS-DOS Version 3.3 Reference Guide
Compaq Deskpro 386 Technical Reference Guide
Spare Parts List, U.S
Spare Parts List, U.S
Spare Parts LIST, International
Spare Parts List, International
Parts List
System Unit
System Unit Exterior and Battery
System Unit
System Unit Interior with Memory Options
System Unit
Maintenance and Service Guide
Compaq Enhanced Keyboard
Compaq Enhanced Keyboard
Missing
Missing
Compaq Video Graphics Color Monitor
Compaq Video Graphics Color Monitor
Compaq Video Graphics Monochrome Monitor
Compaq Video Graphics Monochrome Monitor
300-/600-MEGABYTE Fixed Disk Drive Expansion Unit Parts List
300-/600-Megabyte Fixed Disk Drive Expansion Unit
Parts for Expansion Unit
Page
Contents
Addendum 108431-001 11-88 to Manual No
Removal and Replacement Procedures
Compaq Dual-Mode Monitor Installed
Monitor
Compaq Color Monitor Installed
Compaq Video Graphics Monochrome Moni- tor Installed
Keyboard
Removing the Keyboard
Power Fuse
Removing the Fuse Holder
To replace the power fuse, follow these steps
Preparing
System Unit Cover and Internal Configuration
Removing the System Unit Cover
Maintenance and Service Guide
Power Supply
11.Location of the Power Supply Assembly
12.Removing the Power Supply Screws
Removal and Replacement Procedures
Battery
16.Location of the Battery Connector
17.Removing the Battery
Security Lock
18.Removing the Security Lock Interior View
Expansion Boards
19.Location of the Reinforcement Bracket
Remove the RF shield Figure Remove the cable cover Figure
Maintenance and Service Guide
25.Removing an Expansion Board
11 80287 Coprocessor
Memory Expansion Boards
Maintenance and Service Guide
Memory Chips
28.Removing the Memory Chip
To replace a memory chip, follow these steps
Speaker Assembly and Security Lock Switch
30.Location of the Speaker/Board Guide Assembly
Maintenance and Service Guide
33.Removing the Speaker Assembly
Configurations of Mass Storage Devices
Mass Storage Devices
Expansions Boards
38.Removing a Mass Storage Device from Position a
Power Cable Connections for Drive Positions a and D
Power Cable Connections for Drive Positions B and C
40.Disconnecting Cables from Mass Storage Device B or C
Addendum 108431-001 11-88 to Manual No
System Board
Addendum 108431-001 11-88 to Manual No
Maintenance and Service Guide
Addendum 108431-001 11-88 to Manual No
Maintenance and Service Guide
46.Removing the System Board
Intel 387 Coprocessor
47.Removing the 387 Coprocessor
To replace the 387 Coprocessor, follow these steps
Keyboard g .2 Monitor Run the Setup program
Lost KEY
19 300-/600-MEGABYTE Fixed Disk Drive Expansion Unit
Fixed Disk Drive Unit
52.Fixed Disk Drive Retaining Screws
53.Locating and Removing Terminating Resistor
Power Supply
54.Power Supply Screws
57.Removing Power Cables
External Interface Adapter Board
Jumper Positions and Switch Settings
Bank 3 Enabled Bank 3 Disabled
Compaq Enhanced Color Graphics Board
Jumper Settings and Switch Settings
System Boards
System Board assy. no Switch Settings
Compaq Deskpro 386 System Board Version 2 assy. no
U13 Even
32-BIT System Memory Board
32-Bit System Memory Board assy. no
Jumper Settings for the 32-Bit System Memory Board assy. no
5- to 2-MEGABYTE 16-BIT Memory Expansion Board
5- to 2-Megabyte 16-Bit Memory Expansion Board assy. no
Maintenance and Service Guide
5a.1- to 2-Megabyte 32-Bit Memory Expansion Board assy. no
Bank 3 Enabled
Bank 3 Disabled
Esdi Fixed Disk Drive Controller Board
Esdi Fixed Disk Drive Controller Board assy. no. WD1005WAH
Jumper Jumper Position Function Not installed Reserved
Multipurpose Fixed Disk Drive Controller Boards
OFF
Multipurpose Fixed Disk Drive Controller Board assy. no
Maintenance and Service Guide
Fixed Disk Drive Controller Board
10.Fixed Disk Drive Controller Board assy. no. WD1002WAH
Maintenance and Service Guide
Host Adapter Board
11.Host Adapter Board assy. no
13. Switch Settings for the Host Adapter Board
Compaq Enhanced Color Graphics Board
12.COMPAQ Enhanced Color Graphics Boards assy. no
Maintenance and Service Guide
Configuration Switch Bank SW1
Maintenance and Service Guide
Configuration Switch Bank SW2
16 SW2 Settings for the Compaq Enhanced Color Graphics Board
Configuration Switch Bank SW3
Video Display Controller Boards
Maintenance and Service Guide
Jumper Settings and Switch Settings
Compaq Video Graphics Controller Board
Asynchronous COMMUNICATIONS/PARALLEL Printer Board
Maintenance and Service Guide
Disable = OFF
Maintenance and Service Guide
14 300-/600-MEGABYTE Fixed Disk Drive Expansion Unit
22.ESDI External Fixed Disk Drive Controller Board
Page
Theory of Operation System Configuration
Page
Mass Storage Configuration
Theory of Operation
System Configuration
Maximum Storage
System Configured for 1.2 Gigabytes
Mirroring
Duplexing
Setting UP the External Fixed Disk Drive Expansion Unit
Fdisk Utility
Format Command
Novell Netware Configuration
Do not use Cpqdsk or Nvcpqdsk for non- dedicated servers
Maintenance and Service Guide
COMPSURF.OBJ
Abend Not enough memory for disk FAT tables
From the a prompt, enter the following commands
Appendix a
Fixed Disk Drive see also Mass Storage Devices
Tape Adapter Board see Host Adapter Board
See Test Selection Menu
Maintenance and Service Guide
6Appendix A, Index
Maintenance and Service Guide
