VT101 Series Pocket Service Guide

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Part	Date	Title
EK-VT101-PS-001	1981-09	VT101 Series Pocket Service Guide

Copies of EK-VT101-PS-001

Address:	https://vt100.net/dec/ek-vt101-ps-001.pdf
Site:	VT100.net
Format:	PDF
Size:	1746075 bytes (1.7 MiB)
Credits:	Manual donated by Norbert Roll. Scanned by Paul Williams

Address:	http://bitsavers.org/pdf/dec/terminal/vt101/EK-VT101-PS-001_VT101_Pocket_Service_Guide_Sep81.pdf
Site:	Al Kossow's Bitsavers
Format:	PDF
Size:	1469148 bytes (1.4 MiB)

Address:	http://www.vaxhaven.com/images/6/6c/EK-VT101-PS-001.pdf
Site:	VaxHaven
Format:	PDF
Size:	1746075 bytes (1.7 MiB)

Table of Contents (from EK-VT101-PS-001)

Chapter 1 Troubleshooting and Testing
- 1.1 General
- 1.2 Troubleshooting and Testing
- 1.3 Troubleshooting the Option
- 1.4 Power-Up Self-Test
- 1.5 Data Loopback Self-Test
- 1.6 EIA Control Lines Loopback Self-Test (VT102 and VT131)
- 1.7 Printer Loopback Self-Test (VT102 and VT131)
- 1.8 Video Adjust Test
- 1.9 Printer Problems
- 1.10 Keyboard Problems
  - 1.10.1 Unable to Type a Particular Alphanumeric Character
  - 1.10.2 Keyboard Does Not Generate Bell Tone
- 1.11 Self-Test Error Codes
- 1.12 No Response at Power-Up
  - 1.12.1 Terminal Not Plugged In, or No Power at Wall Socket
  - 1.12.2 Power Cord Has Internal Short or Open
  - 1.12.3 Fuse is Blown
  - 1.12.4 No AC Voltage to Power Supply
  - 1.12.5 No Secondary Voltage from Transformer
  - 1.12.6 Incorrect or No DC Voltage to Controller Board
  - 1.12.7 Keyboard Voltage Check
  - 1.12.8 Terminal Controller Board Voltage Checks
  - 1.12.9 Video Monitor Board Voltage Check
  - 1.12.10 Flyback Assembly and/or CRT Cable Shorting or Bad
- 1.13 Incorrect Response at Power-Up
  - 1.13.1 Cursor Does Not Appear in Upper-Left Corner of Screen
  - 1.13.2 Random LEDs Flash, Cursor Does Not Appear on Screen
  - 1.13.3 Random Characters Appear on Screen
  - 1.13.4 Cursor Appears on Screen but Terminal is Inoperable
Chapter 2 FRU Removal and Replacement
- 2.1 General
- 2.2 Removal and Replacement Procedures
- 2.3 Access Cover
- 2.4 20 mA Current Loop Option Board
- 2.5 Top Cover
- 2.6 Terminal Controller Board
- 2.7 Bottom Cover
- 2.8 Power Supply Board
- 2.9 Power Supply Transformer
- 2.10 Video Monitor Board
- 2.11 Flyback Transformer and Vertical Choke
- 2.12 CRT
  - 2.12.1 CRT Storage
  - 2.12.2 CRT Disposal
- 2.13 Keyboard Top Cover
- 2.14 Keyboard
- 2.15 Keyboard Cable
- 2.16 Keyboard Speaker
- 2.17 Keycaps
  - 2.17.1 Test After Installation
- 2.18 ROMs
- 2.19 Recommended Spares List
Chapter 3 Video Monitor Alignment
- 3.1 General
- 3.2 Alignment Template
  - 3.2.1 Making a Paper Template
  - 3.2.2 Attaching the Template
  - 3.2.3 Brightness
  - 3.2.4 Yoke Rotation
  - 3.2.5 Vertical Height
  - 3.2.6 Horizontal Width
  - 3.2.7 Centering
  - 3.2.8 Vertical Linearity
  - 3.2.9 Focus
Chapter 4 Board Configurations
- 4.1 General
- 4.2 Terminal Controller Boards
  - 4.2.1 VT101 Configuration
  - 4.2.2 VT102 Configuration
  - 4.2.3 VT131 Configuration
- 4.3 Communication Switchpack (VT102 and VT131 only)
Chapter 5 Options
- 5.1 General
- 5.2 20 mA Current Loop Option Installation
- 5.3 20 mA Current Loop Option Checkout
Chapter 6 Operator Reference Material
- 6.1 General
- 6.2 SET-UP
  - 6.2.1 SET-UP A
  - 6.2.2 SET-UP B (VT101)
  - 6.2.3 SET-UP B (VT102 and VT131)
  - 6.2.4 SET-UP C (VT131 only)
Appendix A Related Information
Appendix B Cable Information
Appendix C Physical Functional Diagram
- C.1 Physical Functional Diagram Board Pins and Signals

Company:	Digital Equipment Corporation
Part:	EK-VT101-PS
Keywords:	terminal VT100
Cited by:	EK-VT131-UG-002, VT131 Video Terminal User Guide EB-28761-56, Terminals & Printers Handbook 1987

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VT101 Series Pocket Service Guide

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Copies of EK-VT101-PS-001

Table of Contents (from EK-VT101-PS-001)