Circuit Diagram Explanation - Daewoo L32R63 VKE Series Maintenance Service Manual

Document: After-sales Maintenance Service Manual
1. IF demodulator
Tuner(DTV : ATSC, ISDB-T, DVB-T/T2, ATV : PAL, SECAM, NTSC) receives live TV signal as
picture above. After receiving, this TV signal is converted to IF and passed to Demodulator. This
demodulator makes TS(transport Stream) or CVBS(Composite Video) for Decoder.
Usually, this kind of demodulator and Decoder are in the ONE SOC main chipset.
2. MEPG decoder
UARTO TX
UARTO RX
TS(Transport Stream) or CVBS(Composite Video) signal are passed to MPEG decoder. These input
signal are converted to 16 Bit Digital Video Out signal by decoder and passed to Scaler again. This
front-end decoder effect on overall TV performance.
L32R63_VKE,L40R63_VKE,L43R63_VKE,L49R63_VKE_CIS_Russia.indd 13
No.: L32R63*VKE/L40R63*VKE/L43R63*VKE/L49R63*VKE
VI. Circuit Diagram Explanation
AGC
ATSC/NTSC TUNER
TUNER 12C
SIF CVBS
CLK
TS
SYNC.
8bit
VALID
MPEG DECODER
EEPROM
IF
VSB/QAM
Demodulator
CLK
TS
SYNC.
8bit
VALID
12C
12C
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Version: 1.0 Effective from: APRIL 4th, 2016
12C
RESET
NAND Flash
16bit
Local Bus
16bit 16bit
LVDS
2016-04-05 오전 11:00:49