Sanyo LCD-47XR7H, Service Manual

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16
1. Video module
There are three kinds of terminal of SCALER FLI8548:
A: 16 channel analog signal input
B: one group 24BIT digital signal input
C: one group HDMI digital signal input
SCART1, SCART2, AV, DVB-T, TV input from terminal A;
VGA, YPBPR via switch PI5V330 to ADC CAT9983, after CAT9983 processing output 24BIT
DIGITAL DATA to terminal B;
HDMI1 and HDMI2 via FSHDMI04 switch directly to terminal C.
SCALER FLI8548 has only three ADC of 10BIT(16-rout analog signal via internal MUX switch to
three ADC), so the signals(SCART1, SCART2, AV, DVB-T, TV) input to terminal A can’t cooperate to
perform PIP each other. The function of PIP can only realize by the signals input from the three
terminals(A, B and C).
All the signals via FLI8548 processing to the panel directly, the output interface is configurable for
single wide TTL, LVDS(18,24 or 30-bit RGB) or dual wide TTL(18, 24-bit RGB), LVDS(18. 24 or
30-bit RGB). FY# use the dual wide LVDS(30-bit RGB) to support the 1080P panel.
2. TV module
RF signal via the tuner to output 38.9MHz(L) or 33.5MHz(L’) IF signal, via pre-IF circuit and two
SAW to amplify and separate VIF and SIF, then it sent to IF decode IC TDA4470. VIDEO-OUT from
TDA4470 via switch HEF4052T select and four filters, output CVBS to FLI8548 image processing.
SIF from TDA4471 sent to sound processing IC N03SGTV5830.
Diagram of TDA4470 is below: