Sign In
Upload
Download
Table of Contents
Contents
Add to my manuals
Delete from my manuals
Share
URL of this page:
HTML Link:
Bookmark this page
Add
Manual will be automatically added to "My Manuals"
Print this page
×
Bookmark added
×
Added to my manuals
Manuals
Brands
Digital Equipment Manuals
Desktop
VT420
Service manual
Digital Equipment VT420 Service Manual
Hide thumbs
Also See for VT420
:
Installation manual
(189 pages)
,
Service manual
(82 pages)
1
2
Table Of Contents
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
page
of
82
Go
/
82
Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
About this Guide
VT420 Models
VT420 Features
VT420 Model Differences
Troubleshooting
VT420 Video Terminal with Keyboards
Troubleshooting the VT420
VT420 Self-Tests
Before You Start
How to Type an Escape Character
VT420 Self-Test Chart
Power-Up Self-Test
DEC-423 Port Loopback Test (6-Pin)
VT420 Rear Connector Panel and Loopback Connectors
RS-232 Port Data Lines Loopback Test
(25-Pin, Worldwide Model Only)
RS-232 Port Control Lines Loopback Test
(25-Pin, Worldwide Model Only)
Printer Port Loopback Test (6-Pin)
Screen Alignment Test
Printer Problems
Error Codes
VT420 Display Error Codes
Top Cover
Crt/Yoke/Bezel Assembly
Terminal Board Assembly
Keyboard
CRT Disposal (Digital Service Representatives Only)
Aligning the Screen
Set-Up Directory Screens
Screen Align Screens
Monitor Adjustments
Monitor Adjustment Controls
Before You Start
Displaying the Screen Test Pattern
Screen Test Pattern
Screen Control
Subcontrast
Rotation
Rotation and Centering Adjustment
Horizontal Width
Vertical Height
Vertical Linearity
Centering
Focus
Displaying Set-Up Screens
Set-Up Directory Screens
Changing Settings
Saving Set-Up Values
Recalling Set-Up Values
Modems
Cables
VT420 Cables
Related Documentation
VT420 Models
VT420 Recommended Spares
Recommended Spares
Keyboard Models
VT420 North American Model
Physical/Functional Diagrams
VT420 Worldwide Models
Advertisement
Quick Links
Download this manual
VT420 Service Guide
Order Number EK-VT 420-PS-002
···-----·'"···········
..
Digital Equipment Corporation
Table of
Contents
Previous
Page
Next
Page
1
2
3
4
5
Advertisement
Table of Contents
Troubleshooting
Troubleshooting
12
Troubleshooting the VT420
14
Need help?
Do you have a question about the VT420 and is the answer not in the manual?
Ask a question
Questions and answers
Related Manuals for Digital Equipment VT420
Desktop Digital Equipment VT420 Installation Manual
Video terminal digital (189 pages)
Monitor Digital Equipment VT420 Service Manual
(82 pages)
Desktop Digital Equipment VT180 Series Technical Manual
(329 pages)
Desktop Digital Equipment VT100 User Manual
(82 pages)
Desktop Digital Equipment EK-VT100-UG-001 User Manual
(94 pages)
Desktop Digital Equipment VT78 Programmer's Reference Manual
Video data processor (74 pages)
Desktop Digital Equipment VT18X Upgrade And System Test Manual
(61 pages)
Desktop Digital Equipment VT 220 Installation Manual
(24 pages)
Desktop Digital Equipment VT 220 Owner's Manual
(140 pages)
Desktop Digital Equipment VAX 6000 Series Operation Manual
Openvms systems operations guide: vax 6000 systems (56 pages)
Desktop Digital Equipment VAXstation 2000 Owner's Manual
(145 pages)
Desktop Digital Equipment VAXstation 2000 Maintenance Manual
(224 pages)
Desktop Digital Equipment VAX 4000 Model 300 Installation Manual
(96 pages)
Desktop Digital Equipment VAXstation 3100 Series Upgrade Manual
(66 pages)
Desktop Digital Equipment 7000 AXP System Installation Manual
(177 pages)
Desktop Digital Equipment VAX-11/730 Hardware User's Manual
(72 pages)
Related Products for Digital Equipment VT420
Digital Equipment VT180 Series
Digital Equipment VT100
Digital Equipment VT78
Digital Equipment VT18X
Digital Equipment VT 220
Digital Equipment VAX 4000 Model 300
Digital Equipment VAX 4000 Model 100
Digital Equipment VAXstation 3100 Series
Digital Equipment VAX 4000 108
Digital Equipment digital VAX 8300
Digital Equipment VAX-11/730
Digital Equipment Micro VAX 3400
Digital Equipment Micro VAX 3900
Digital Equipment Micro VAX 3300
Digital Equipment VAXstation I
Digital Equipment VAX 4000 Model 200
This manual is also suitable for:
Ek-vt 420-ps-002
Table of Contents
Print
Rename the bookmark
Delete bookmark?
Delete from my manuals?
Login
Sign In
OR
Sign in with Facebook
Sign in with Google
Upload manual
Upload from disk
Upload from URL
Need help?
Do you have a question about the VT420 and is the answer not in the manual?
Questions and answers