ldkraemer
Veteran Member
I wanted to make a spare Kaypro II Keyboard cable, since my original coiled Cable was beginning to deteriorate.
The following information is located in the Kaypro II Manual.
J3 Pin 4 (Black) - Keyboard Serial Data Out (to Keyboard) TTL Levels
J3 Pin 3 (Red) - Ground
J3 Pin 2 (Yellow) - Keyboard Serial Data In (from Keyboard) TTL Levels
J3 Pin 1 (Green) - +5 VDC
I had purchased some RJ-22 Modular Plugs and a set of Crimpers from Fry's Electronics. I used my OHM
Meter to OHM out the Original Keyboard Cable as follows:
I oriented the RJ-22 Modular Plug with Brass Contacts UP, and Pin #1 is on the Left of RJ-22 Modular Plug.
J3 Pin 4 (Black) - Keyboard Serial Data Out (to Keyboard) TTL Levels...............BLACK WIRE.....
J3 Pin 3 (Red) - Ground................................................................................RED WIRE.........
J3 Pin 2 (Yellow) - Keyboard Serial Data In (from Keyboard) TTL Levels..............YELLOW WIRE..
J3 Pin 1 (Green) - +5 VDC..............................................................................GREEN WIRE....
...........................................................................................Keyboard Serial Data in (from Motherboard) TTL Levels - KB Pin 1 (Black)
...........................................................................................Ground...................................................................... - KB Pin 2 (Red)
...........................................................................................Keyboard Serial Data Out (to Motherboard) TTL Levels - KB Pin 3 (Yellow)
...........................................................................................+5 VDC..................................................................... - KB Pin 4 (Green)
Case Plug Pin 1 goes to Keyboard Plug Pin 4
Case Plug Pin 2 goes to Keyboard Plug Pin 3
Case Plug Pin 3 goes to Keyboard Plug Pin 2
Case Plug Pin 4 goes to Keyboard Plug Pin 1
Larry
The following information is located in the Kaypro II Manual.
J3 Pin 4 (Black) - Keyboard Serial Data Out (to Keyboard) TTL Levels
J3 Pin 3 (Red) - Ground
J3 Pin 2 (Yellow) - Keyboard Serial Data In (from Keyboard) TTL Levels
J3 Pin 1 (Green) - +5 VDC
I had purchased some RJ-22 Modular Plugs and a set of Crimpers from Fry's Electronics. I used my OHM
Meter to OHM out the Original Keyboard Cable as follows:
I oriented the RJ-22 Modular Plug with Brass Contacts UP, and Pin #1 is on the Left of RJ-22 Modular Plug.
J3 Pin 4 (Black) - Keyboard Serial Data Out (to Keyboard) TTL Levels...............BLACK WIRE.....
J3 Pin 3 (Red) - Ground................................................................................RED WIRE.........
J3 Pin 2 (Yellow) - Keyboard Serial Data In (from Keyboard) TTL Levels..............YELLOW WIRE..
J3 Pin 1 (Green) - +5 VDC..............................................................................GREEN WIRE....
...........................................................................................Keyboard Serial Data in (from Motherboard) TTL Levels - KB Pin 1 (Black)
...........................................................................................Ground...................................................................... - KB Pin 2 (Red)
...........................................................................................Keyboard Serial Data Out (to Motherboard) TTL Levels - KB Pin 3 (Yellow)
...........................................................................................+5 VDC..................................................................... - KB Pin 4 (Green)
Case Plug Pin 1 goes to Keyboard Plug Pin 4
Case Plug Pin 2 goes to Keyboard Plug Pin 3
Case Plug Pin 3 goes to Keyboard Plug Pin 2
Case Plug Pin 4 goes to Keyboard Plug Pin 1
Larry