Visual 200 Terminal
- For more information, see this article's corresponding Wikipedia page: Device.
| 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)
| 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
| RefDes | Qty | Compatible Part Number | Order Links |
|---|---|---|---|
| C120 | 1 | ECA-2AM2R2B | Digikey |
| C401 | 1 | UPJ2C470MHD | Digikey |
| C312 | 1 | EKY-250ELL102ML15S | Digikey |
| 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 / 50YXJ22MTA5X11 | Digikey Mouser LCSC |
| C304 | 1 | UPM2A101MHD6TN | Digikey |
| C308 | 1 | 25YXF47MEFCTA5X11 | Digikey |
| C402 | 1 | UVZ2A4R7MDD1TA | Digikey |
| C117 | 1 | UVZ1J101MPD | Digikey |
| C121 | 1 | UPJ2C010MPD1TA | Digikey |
| 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.