JVC 370 SC, 330, 340 SC service manual Image Light Amplifiers, Decoder

Chapter 2—Functional Descriptions

BVIDCH1	Blue video input to channel 1.
BVIDCH2	Blue video input signal to channel 2.
HSYNCCH1	Horizontal or composite sync signal to channel 1.
HSYNCCH2	Horizontal or composite sync signal to channel 2.
VSYNCCH1	Vertical sync signal to channel 1.
VSYNCCH2	Vertical sync signal to channel 2.
COMPVID	Composite video signal, pass through to decoder.
LUM	Luminance signal for SVHS, pass through to decoder.
CHROM	Chrominance signal for SVHS, pass through to decoder.
RTN	Return for SVHS; pass through to decoder.
	Image Light Amplifiers
Outputs	Description
+RLCLV	One half (½ ) of the differential pair providing a distorted square
	wave to the red ILA. (TP 21)
-RLCLV	One half (½ ) of the differential pair providing a distorted square
	wave to the red ILA. (TP 20)
+GLCLV	Similar to +RLCLV. (TP 19)
-GLCLV	Similar to -RLCLV. (TP 18)
+BLCLV	Similar to +RLCLV. (TP 17)
-BLCLV	Similar to -RLCLV. (TP 16)
	Decoder
Inputs	Description
RED	Red video signal from decoder.
GREEN	Green video signal from decoder.
BLUE	Blue video signal from decoder.
SYNC	Horizontal sync signal from decoder.
IICINT	Interrupt signal from decoder, pass through to SCB.
CH3SEL	Indicates to VPB that video input is composite.
CH4SEL	Indicates to VPB that video input is SVHS.
VERT	Vertical sync signal from decoder.
Outputs	Description
SCLK	Single ended serial clock from serial communication bus to decoder.
SDATA	Single ended serial data from serial communication bus to decoder.
IICCLK	IIC clock pass through to decoder.
IICDATA	IIC data pass through to decoder.
COMPVID	Composite video signal, pass through to decoder.
LUM	Luminance signal for SVHS, pass through to decoder.
CHROM	Chrominance signal for SVHS, pass through to decoder.
RTN	Return for SVHS; pass through to decoder.

2-52 Model 330. 340SC, and 370SC Service Manual