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DEC VAXmate Service Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Chapter 1 Overview
Introduction
Figure 1-1 Vaxmate Workstation
Vaxmate Workstation Components
Figure 1-2 Vaxmate Workstation Block Diagram
Monitor (Amber or Green Screen)
Communications Port
Printer Port
CPU Board
Power Supply
RX33 1.2 Mbyte Diskette Drive
Keyboard
Mouse
Options
Mbyte Memory
80287 Coprocessor
Expansion Box
Integral Modem Board for North America
LA75 Printer
LN03 Plus Printer
Thinwire Ethernet Cable
DIGITAL Thinwire Ethernet Multiport Repeater (DEMPR)
DIGITAL Thinwire Ethernet Station Adapter (DESTA)
Environmental and Electrical Description
Table 1-2 Expansion Box Power Consumption (Maximum)
Chapter 2 Troubleshooting the Vaxmate Workstation
Introduction
Diagnostic Tests
Power-Up Test
Extended Self-Test
Service Diagnostics
Light Emitting Diodes (Leos)
Figure 2-1 LED Locations
Troubleshooting Procedure
Table 2-1 LED Function
Power-Up Test
Figure 2-2 ROM Diagnostic Test Sequence (Sheet 1 of 3)
Figure 2-2 ROM Diagnostic Test Sequence (Sheet 2 of 3)
Table 2-2 Symptoms
CPU Board]Umpers
System Halt
Error Numbers
Figure 2-3 CPU Boardjumpers
What to Do if the Vaxmate Power Shuts down
Thermal Shutdown/Overvoltage
Overcurrent Shutdown
Blown Fuse or Short Circuit
Extended Self-Test
Figure 2-4 Inserting the Diskette
Figure 2-5 Extended Self-Test Keys
Figure 2-6 Sample Configuration Display
Exceptions to Testing Results
If the Customer Reports a Modem Problem
New Expansion Box
New Hard Disk in Expansion Box
LA75 Printing Erroneous Characters
Service Diagnostics
System Errors Versus Diagnostic Errors
Previously Detected Error
Figure 2-7 Restarting Service Diagnostics
Main Diagnostic Menu
Figure 2-8 ROM Diagnostic Error
Figure 2-9 Main Diagnostic Menu
Selecting a Mode from Main Diagnostic Menu
System Test Mode
Figure 2-10 Service Diagnostics Mode Selection Keys
Figure 2-11 Test Option Menu
Test Option Menu
Figure 2-12 Prompt on Error
Figure 2-13 Loop on Error
Figure 2-14 System Test Requirements
System Test Requirements
Figure 2-15 Assembling the Network Port Loopback Connector
Figure 2-16 Disconnecting from the Network
Figure 2-17 Disconnecting Mouse, Printer, and Communications Cables
Figure 2-18 Installing Loopback Connectors
System Test Execution
Figure 2-19 System Test Execution
Individual Tests
Figure 2-20 Individual Test Menu
New Diagnostic Installation
Rror Log Mode
Figure 2-22 Sample Error Log
Chapter 3 Thinwire Ethernet
Introduction
Thinwire Network Hardware Components
Thinwire Network Terms
Thinwire Network Troubleshooting
Installation Guidelines
Installation Procedures
Thinwire Network and Vaxmate Server
Thinwire Network with Microvax II Computer Server
Adding a Workstation to End of Thinwire Segment
Adding a Vaxmate Workstation to Middle of an Existing Segment
Thinwire Local Area Network (LAN) Example
Thinwire Network Map and Worksheet
Chapter 4 Monitor Adjustments
Introduction
Brightness and Contrast Adjustment
Internal Monitor Adjustments
Horizontal Hold
Cutoff
Width Coil
Height - 400 Line Mode
Centering Rings
Rotation
Video Compensation
Height - 250 Line Mode
Focus
Chapter 5 FRU Replacement
Introduction
Table 5-1 Frus and Removal/Replacement Procedures Paragraph Numbers
Before You Replace any Frus
Replacing Frus
Turning off Power and Unplugging External Cables
Separating the Expansion Box from the System Unit
Fuse Replacement
Opening the System Unit Back Door
System Unit Back Door Removal
System Unit Cover Removal
Modem Board Replacement
Math Coprocessor (80287) Replacement
Speaker Replacement
Monitor Board Removal
CRT Handling Precautions
CRT Assembly Removal
CRT Assembly Installation
Diskette Drive Removal
Diskette Drive Installation
CPU Board Removal
CPU Board Installation
Power LED Removal
Power LED Installation
Ijo-Video Board Removal
Ijo-Video Board Installation
Power Supply Board Replacement
Expansion Box Cover Removal
Hard Disk Drive Removal
Hard Disk Drive Removal with Fan Present
Hard Disk Drive Base Plate Removal
Readjwrite Board Removal from the Hard Disk
Readjwrite Board Installation
Removing Skid Plate from New Hard Disk
Hard Disk Drive Installation
Gaining Access to the Expansion Box Card Cage
Hard Disk Controller Replacement
Option Replacement in the Expansion Box
Option Backplane Replacement
Expansion Box Fan Replacement
Expansion Box Power Connector and Bridge Replacement
Expansion Box Power Regulator Replacement
Appendix A Part Numbers
Appendix B Test Descriptions
Introduction
Appendixb Test Descriptions
Appendix C Error Numbers
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EK-P500B-SV-002
Service Guide
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Table of Contents
Troubleshooting
Chapter 2 Troubleshooting the VAXmate Workstation
32
Troubleshooting Procedure
36
ThinWire Network Troubleshooting
87
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