What causes a horizontal or vertical line to appear on a DEC Touch terminal screen?
If a horizontal or vertical line appears on the screen of your DEC Touch terminal, the terminal board may need to be replaced.
How do I fix a DEC Touch terminal screen that won't scroll?
To resolve a screen display that does not scroll on your DEC Touch terminal, and the hold indicator is on, press F1 (Scroll Lock) to resume scrolling.
What to do if something is on the keyboard of a DEC Touch terminal?
If an object is resting on the keyboard of your DEC Touch terminal, remove all objects from the keyboard.
Why is my DEC Touch terminal making a continuous bell sound at power up?
If you are experiencing a continuous bell sound at power up on your DEC Touch terminal, it may be because the terminal was powered down with sessions enabled.
How to fix a faulty keyboard speaker transducer on a DEC Touch terminal?
If the keyboard speaker transducer is not working on your DEC Touch terminal, replace the keyboard.
Explains the different VT420 terminal models and their common features.
Provides methods for diagnosing and resolving terminal problems and running self-tests.
Details procedures for removing and replacing field replaceable units like the CRT and terminal board.
Guides on aligning and adjusting the VT420 monitor's screen and display characteristics.
Covers how to access, change, save, and recall terminal configuration settings.
General| Model | VT420 |
|---|---|
| Release Year | 1990 |
| Display Type | Monochrome CRT |
| Category | Terminal |
| Manufacturer | DEC (Digital Equipment Corporation) |
| Character Set | ASCII |
| Communication Interface | RS-232 |
| Connectivity | Serial |
| Baud Rate | Up to 38, 400 bps |
| Protocols | VT100 |
| Emulation Modes | VT100, VT52 |
| Power Supply | 120/240 VAC, 50/60 Hz |
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