NEC PX-50XM4 series Service Manual page 496

(2) When Sub is for chroma signal (DVD/HD1 (3RCA)) input
 Block operation diagram: Red lines show the flow of Main signals. Blue lines indicate the Sub signals a
VIDEO1 Video SW
(BNC)
VIDEO2
(RCA)
VIDEO3
(S)
DVD/HD1
(3RCA)
Video/sync
RGB2/
DVD/HD2
(5BNC)
RGB1
(D-Sub)
RGB3 TMDS
(DVI) Receiver
Video chroma
Decoder
LPF1
Out1
SW
LPF2
Out2
nd green lines show the flow of synthesized signals.
CPU
A/D1 Digital signal
Processing block
I-P converter
Scaling
γ correction
Double picture processing
A/D2
CONFIDENTIAL
LVDS
Transmitter
To Module
: Analog signal line
: Digital signal line
: Control signal line
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