JVC Model 200 - Manual (Page 72)

Chapter 2---System Description
Figure 2-16. Scan Reversal Board, Input/Output Diagram.
Scan Reversal Board I /O
This section describes the inputs to and outputs from the SRB.
The I/O descriptions are arranged by the source/destination of the
signal. The assembly communicated with is the primary heading
of each group of signals. Those signals are subdivided into inputs
and outputs. Input refers to an Input to the Scan Reversal Board.
Output refers to an output from the Scan Reversal Board.
2-58 Model 200 Service Manual