Visual 200 Terminal: Difference between revisions

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(Added General info, dissassembly instructions. Instructions are based on the reference manual, I don't have a machine to check against so correct me if I'm wrong.)
 
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|Input Voltage=120V AC|Power Connector=NEMA 5-15}}
|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 ==
== Known Issues ==


Line 22: Line 22:
== Disassembly Notes ==
== Disassembly Notes ==


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


Line 40: Line 46:
![https://caps.wiki/wiki/Capacitor_Types Type]
![https://caps.wiki/wiki/Capacitor_Types Type]
!Brand
!Brand
!Series
!Tolerance
!Tolerance
|-
|-
Line 46: Line 53:
|2.2 µF
|2.2 µF
|100 V
|100 V
|Through Hole
|Through Hole Radial
|8mm
|8mm
|12 mm
|12 mm
Line 53: Line 60:
|Aluminum Electrolytic
|Aluminum Electrolytic
|Nichicon
|Nichicon
|
|M (±20%)
|M (±20%)
|-
|-
Line 59: Line 67:
|47 µF
|47 µF
|100 V
|100 V
|Through Hole
|Through Hole Radial
|16 mm
|16 mm
|30 mm
|30 mm
|7 mm
|7.5 mm
|105 °C
|105 °C
|Aluminum Electrolytic
|Aluminum Electrolytic
|Nichicon
|Nichicon
|
|M (±20%)
|M (±20%)
|-
|-
Line 72: Line 81:
|1000 µF
|1000 µF
|16 V
|16 V
|Through Hole
|Through Hole Radial
|16 mm
|16 mm
|24 mm
|24 mm
|7 mm
|7.5 mm
|105 °C
|105 °C
|Aluminum Electrolytic
|Aluminum Electrolytic
|Nichicon
|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%)
|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
|
|}
|}


Line 91: Line 255:
! Order Links
! Order Links
|-
|-
|
|C307, C313
|
|2
|
|860020672005 / 50YXJ1M5X11
|[https://www.digikey.com/ Digikey]
|[https://www.digikey.com/ Digikey] [https://www.mouser.com/ProductDetail/Wurth-Elektronik/860020672005?qs=0KOYDY2FL29w5cS8aahRvQ%3D%3D Mouser] [https://www.lcsc.com/product-detail/Aluminum-Electrolytic-Capacitors-Leaded_Rubycon-50YXJ1M5X11_C88782.html LCSC]
|-
|C305
|1
|860020572001 / 860020472001 / 50YXJ4R7MTA5X11
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020572001/5727170 Digikey] [https://www.mouser.com/ProductDetail/Wurth-Elektronik/860020472001?qs=0KOYDY2FL2%2F%252BlYkeK95R6A%3D%3D Mouser] [https://www.lcsc.com/product-detail/Aluminum-Electrolytic-Capacitors-Leaded_Rubycon-50YXJ4R7MTA5X11_C365700.html LCSC]
|-
|C309
|1
|860020572003 / 50YXJ10M5X11
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020572003/5727172 Digikey] [https://www.mouser.com/ProductDetail/Wurth-Elektronik/860020572003?qs=0KOYDY2FL28Nvm4U9TAejQ%3D%3D Mouser] [https://www.lcsc.com/product-detail/Aluminum-Electrolytic-Capacitors-Leaded_Rubycon-50YXJ10M5X11_C432355.html LCSC]
|-
|C303
|1
|860020472004 / 50YXF22MEFCTA5X11
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020472004/5727058 Digikey] [https://www.mouser.com/ProductDetail/Wurth-Elektronik/860020472004?qs=0KOYDY2FL29mXlSSkQ%2FGXA%3D%3D Mouser] [https://www.lcsc.com/product-detail/Aluminum-Electrolytic-Capacitors-Leaded_Rubycon-50YXF22MEFCTA5X11_C365695.html LCSC]
|-
|C116* (purchase 2 of the listed capacitors)
|1
|EEU-EE2G100 / 450BXC10MEFC12.5X20
|[https://www.digikey.com/en/products/detail/panasonic-electronic-components/EEU-EE2G100/1245990 Digikey] [https://www.mouser.com/ProductDetail/Panasonic/EEU-EE2G100?qs=bZLtalHQkT2b1sqwrrSdxA%3D%3D Mouser] [https://www.lcsc.com/product-detail/Aluminum-Electrolytic-Capacitors-Leaded_Rubycon-450BXC10MEFC12-5X20_C473171.html LCSC]
|-
|C109
|1
|860020572001 / 50PX4R7MEFC5X11
|[https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/860020572001/5727170 Digikey] [https://www.mouser.com/ProductDetail/Wurth-Elektronik/860020572001?qs=0KOYDY2FL29yS9e4FPh3vg%3D%3D Mouser] [https://www.lcsc.com/product-detail/Aluminum-Electrolytic-Capacitors-Leaded_Rubycon-50PX4R7MEFC5X11_C122950.html LCSC]
|}
|}
<nowiki>*</nowiki>This type of capacitor isn't really manufactured anymore and are designed for high frequency low ESR application. According to user ''harmon kardon'' on [https://electronics.stackexchange.com/questions/490707/bipolar-capacitor-replacement-with-very-different-dimension 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|Original Parts]] section to perform a parametric search.''
''If parts are not available or different selection is preferred, you can use the values in the [[#Original_Parts|Original Parts]] section to perform a parametric search.''


== Related Links ==
== Related Links ==


 
[https://doc.lagout.org/science/0_Computer%20Science/0_Computer%20History/old-hardware/visualTechnology/UM200-001-0C_Visual_200_Users_Manual_Mar80.pdf Reference Manual] for service and operation, courtesy of lagout.org.
== References ==
== References ==
<references />
<references />
[[Category:WorkNeeded:OriginalParts]]
[[Category:WorkNeeded:ReplacementParts]]

Latest revision as of 00:58, 9 April 2024

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.

References

Retrieved from "https://caps.wiki/index.php?title=Visual_200_Terminal&oldid=4965"