Visual 200 Terminal

For more information, see this article's corresponding Wikipedia page: Device.

This device is in the WorkNeeded:OriginalParts category because it was flagged as missing information on the original parts. It may have replacement parts listed but those cannot be assumed to be identical to the originals. If you have a list of the original parts, please feel free to add them by copying the relevant table from EditorsToolbox:Tables

This device is in the WorkNeeded:ReplacementParts category because it was flagged as missing information on replacement parts. If it has the original parts listed you may be able to search for replacements using the parametric searches available from parts distributors. If you have or make a list of replacement parts, please feel free to add them by copying the relevant table from EditorsToolbox:Tables

Visual 200 Terminal

Preliminary Information
Release Year	1980
Leak Risk	High
Batteries	None
Mounting Technology	Through Hole
Capacitor Types	Aluminum Electrolytic, Ceramic
Destructive Entry	No
Power Requirements
Input Voltage	120V AC
Power Connector	NEMA 5-15

The Visual 200 Terminal is a self-contained terminal based on a Zilog Z-80 processor. It has a detachable keyboard and a 12 inch CRT display.

Known Issues

Screen has horizontal distortion

Causes

• Likely failed caps on CRT driver board (TV Monitor Board)

Solutions

• Recap

Disassembly Notes

To remove the Rear Panel, remove the two screws at the back of the top cover and the two at the bottom corners of the rear panel.

You may then separate the Top Cover; it is held on by two screws on each side, under the overhang. Rotate the cover up and slide it off towards the display.

For the Logic Board, first unplug the two cables, the remove the four screws at the corner. You may remove it without removing the top cover.

The CRT driver board (TV Monitor Board) is attached to bottom of case with four plastic standoffs. Pinch them from the bottom to remove them.

Original Parts

CRT driver board (TV Monitor Board)

Capacitor Specifications and Footprint Information

RefDes	Qty	Capacitance	Voltage	Mount	Diameter/Size	Height	Lead Spacing	Temp	Type	Brand	Series	Tolerance
C120	1	2.2 µF	100 V	Through Hole Radial	8mm	12 mm	5 mm	105 °C	Aluminum Electrolytic	Nichicon		M (±20%)
C401	1	47 µF	100 V	Through Hole Radial	16 mm	30 mm	7.5 mm	105 °C	Aluminum Electrolytic	Nichicon		M (±20%)
C312	1	1000 µF	16 V	Through Hole Radial	16 mm	24 mm	7.5 mm	105 °C	Aluminum Electrolytic	Nichicon		K (±10%)
C307, C313	2	1 µF	25 V	Through Hole Radial	5 mm	10 mm	2.5 mm	85 °C	Aluminum Electrolytic	Nichicon		M (±20%)
C305	1	4.7 µF	16 V	Through Hole Radial	5 mm	10 mm	2.5 mm	85 °C	Aluminum Electrolytic	Nichicon		K (±10%)
C309	1	10 µF	25 V	Through Hole Radial	6 mm	10 mm	4.5 mm	85 °C	Aluminum Electrolytic	Nichicon
C303	1	22 µF	25 V	Through Hole Radial	8 mm	12 mm	4.5 mm	85 °C	Aluminum Electrolytic	Nichicon
C304	1	100 µF	50 V	Through Hole Radial	16 mm	25 mm	7.5 mm	105 °C	Aluminum Electrolytic	Nichicon		M (±20%)
C308	1	47 µF	25 V	Through Hole Radial	10 mm	16 mm	5 mm	105 °C	Aluminum Electrolytic	Nichicon		M (±20%)
C402	1	4.7 µF	63 V	Through Hole Radial	8 mm	10 mm	4.5 mm	105 °C	Aluminum Electrolytic	Nichicon		M (±20%)
C117	1	100 µF	35 V	Through Hole Radial	13 mm	24 mm	5 mm	105 °C	Aluminum Electrolytic	Nichicon		M (±20%)
C121	1	1 µF	100 V	Through Hole Radial	8 mm	12 mm	3.5 mm	105 °C	Aluminum Electrolytic	Nichicon		M (±20%)
C116	1	10 µF	25 V	Through Hole Radial	18 mm	36 mm	7.5 mm	85 °C	Bipolar Aluminum Electrolytic	Nichicon	NP-HF (Non-polar, High Frequency)	M (±20%)
C109	1	4.7 µF	25 V	Through Hole Radial	5 mm	10 mm	2.5 mm	85 °C	Aluminum Electrolytic	Nippon/United Chemi-Con	SL

Replacement Parts

Basic PCB Name

Capacitors

RefDes	Qty	Compatible Part Number	Order Links
C307, C313	2	860020672005 / 50YXJ1M5X11	Digikey Mouser LCSC
C305	1	860020572001 / 860020472001 / 50YXJ4R7MTA5X11	Digikey Mouser LCSC
C309	1	860020572003 / 50YXJ10M5X11	Digikey Mouser LCSC
C303	1	860020472004 / 50YXF22MEFCTA5X11	Digikey Mouser LCSC
C116* (purchase 2 of the listed capacitors)	1	EEU-EE2G100 / 450BXC10MEFC12.5X20	Digikey Mouser LCSC
C109	1	860020572001 / 50PX4R7MEFC5X11	Digikey Mouser LCSC

*This type of capacitor isn't really manufactured anymore and are designed for high frequency low ESR application. According to user harmon kardon on Electrical Engineering Stack Exchange, these types of capacitors should be replaced with 2 of the highest ripple current/voltage-rated polar capacitors in a configuration where the 2 capacitors are soldered into the same space with different polarities (+ of Capacitor A to - of Capacitor B, - of Capacitor A to + of capacitor B).

If parts are not available or different selection is preferred, you can use the values in the Original Parts section to perform a parametric search.

Related Links

Reference Manual for service and operation, courtesy of lagout.org.