JVC 250 - Manual (Page 77)

Chapter 5---Electronics
5-22 Model 250 Service Manual
IIC_CLK - IIC clock line
IIC_DATA - IIC data line
IIC_SINT - IIC interrupt
±15 V - input power from the Low Voltage Power Supply, for the analog
circuitry.
+5.1 V - input power from the Low Voltage Power Supply, for the digital
circuitry.
Figure 5-13 Horizontal/Vertical I/O Diagram.