Projector Service Manual

Chapter 2—Functional Descriptions
2-52 Model 330. 340SC, and 370SC Service Manual
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.