Dtv Mpeg Decoder & Cpu - Grundig Davio 20 LCD 51-5732 DVB-T Service Manual

GRUNDIG Service
Hauptplatte – IDTV-Netzteil / Main Board – IDTV Power Supply
U607
LD1117DTTR
458724R 3V3_ASTBY
5V_DVB
3 2
IN OUT
C668
ADJ
C653
33U16V
R712
100N
91R
GND
R714
150R GND
U608
NCP1117STAT3G
4
OUT
3 2
5V_DVB IN OUT
R713
C674
91R
100N
GND
R717
100R
GND
U610
LD1117DTTR
458724R
3 2
3V3_ASTBY IN OUT
ADJ
C669
R715
100N
100R
GND
R716
22R GND
Hauptplatte – Übersicht / Main Board – Overview
Scaler P. 2-18 IDTV MPEG DECODER & CPU
TS_DATA[0..7] ID_TS_ERROR
VCOM1 SDA_HD ID_TS_CLK
CVBSOut R_TX2-
ID_TS_VALID
TXD TXCLK+
TS_SYNC
ADJ_PWM B_TX0+ CI_DIR
AUOutS G_TX1-
RXD1B
AUOutR R_TX2+
TXD1B
AUOutR2 SCL_HD
SCL_MD
AUOutL2 B_TX0-
SDA_MD
ON_PANEL G_TX1+ GRDYB
HPDCTRL TXCLK-
RESET
MUTE_S SOG
RXD0B
ON_PBACK BIN+
TXD0B
RXD RIN+
AUOutL GIN-
AUWS HS_RGB
AUSD0 BIN-
AUSCK RIN-
AVDD_DVI VS_RGB
AVDDA GIN+
AVDD_SIF SCG-
AVDD_AU SCB-
VDDM SC_CVBS
VDDP SCB+
VDDC SCG+
AVDD_MPLL SCR-
+5V SCR+
+3.3V SV_Y0
AUMCK TUNER_CVBS
AUMUTE SV_C0
+2.5MVDD DVB_CVBS
AU_SW VCOM2
ST.BY CVBS1
IR_SYNC SC_FSW
LEDRED SC_FS
KEY_AD1 Y-
LED_Y Y+
OPTICS PR+
MDATA[0..15] PB-
DVB656 SOY
SPDIF_OUT PR-
PB+
SDA_COFDM VCOM0
TS_CLK AUR0
TS_START AUL0
TS_VALID AUMONO
DELAY AUR1
CKE AUL1
AVDD_MemPLL AUR2
GA5 AUL2
GA4 SIFP0
NC/BA1 SIFM0
NC/BA0 AUR3
LVSYNC AUL3
LHSYNC SC_FS2
LDE SC_Chroma
LCK SC_CVBS2
RXE0-/GA3
RXE0+/GA2 BA1
RXE1-/GA1 RASZ
Amplifier
RXE1+/GA0 WEZ
RXE2-/BA7 CASZ MUTE_S
RXE2+/BA6 MADR[0..11] AUWS
RXEC-/BA5 DQS0 AUSD0
RXEC+/BA4 DQS1 AUSCK
RXE3-/BA3 MCLK AUMCK
RXE3+/BA2 MCLKZ I2C_SDA
VPANEL BA0 I2C_SCL
RXO0-/RA7 DQM LOUD_OUT_R
RXO0+/RA6 SCL_COFDM LOUD_OUT_L
RXO1-/RA5 RESET_COFDM ST.BY
RXO1+/RA4 RXO3-/GA7 I2C_SCL_5V
RXO2-/RA3 RXO3+/GA6 I2C_SDA_5V
RXO2+/RA2 ANTPOWER AUOut_R0
RXOC-/RA1 TX_Scart1 AUOut_L0
RXOC+/RA0 RX_Scart1 POP-REMOVE
LOUD_OUT_R
24V SENSE
LOUD_OUT_L
33V_PWM
MUTE_S
SDA_MD
SCL_MD
RESET_COFDM
TS_START
C661
33U16V
TS_VALID
TS_CLK
RX_Scart1
TX_Scart1
ANTPOWER
TXD1B
33
TXD1B
RXD1B
RXD1B
RESET DVB
2V5_ASTBY RESET DVB
26
C843
36
33U16V
RG813
MPEG_ALRCK
MPEG_ADO
35
MPEG_SPDIF
MPEG_ABCK
47R
34
ITU_CLK
C917
*47pF
GND
1V5_ASTBY
D_CVBS_IN
C670
33U16V
LX IDTV
P. 2-21 COMMON INTERFACE
ID_TS_DATA[0..7] RESET_COFDM
RDATA[0..15] RADDRESS22
RADDRESS[0..22] TS_TUN_DATA[0..7]
TXD1B TS_SW
RXD1B ID_TS_DATA[0..7]
TS_SW FCSB0
EMI_SW EMI_SW
ITU_CLK RDATA[0..15]
ITU656[0..7] TS_CLK
CI_CD2 TS_START
CI_REG TS_VALID
CI_INPACK CI_IREQ
CI_RESET CI_CD1
CI_IOWR CI_VS1
CI_IORD CI_CD2
CI_IREQ CI_REG
CI_CD1 CI_RESET
CI_VS1 CI_IOWR
MPEG_ABCK CI_IORD
MPEG_AMCK FWEB
MPEG_ADO FOEB
MPEG_SPDIF GCS0B
MPEG_ALRCK RADDRESS[0..22]
FWEB
FOEB
GCS0B
FCSB0
D_CVBS_IN
RADDRESS22
RESET_COFDM
RX_Scart1
TX_Scart1
ANTPOWER
Scart
TUNER_SC SC_FSW
AUOutL2 SC_FS
AUOutR2 SC_FS2
VCOM1 AUR1
CVBSOut AUL1
P. 2-15
AUOutR AUL3
LOUD_OUT_R AUOutL AUR3
LOUD_OUT_L SCG+
SCR+
SCB+
SC_CVBS
SCG-
SCB-
SCR-
SC_Chroma
SC_CVBS2
SC1_PIP_CVBS
SC2_PIP_CVBS
AuOutR3
AuOutL3
TX_Scart1
RX_Scart1
I2C_SDA_5V
I2C_SCL_5V
R710 47R
SDA_COFDM
R711 47R
SCL_COFDM
TS_DATA7 TS_DATA7
TS_DATA6 TS_DATA6
TS_DATA5 TS_DATA5
TS_DATA4 TS_DATA4
TS_DATA3 TS_DATA3
TS_DATA2 TS_DATA2
TS_DATA1 TS_DATA1
TS_DATA0 TS_DATA0
RESET_COFDM
TS_START
TS_VALID
RX_Scart1
TX_Scart1
ANTPOWER ANTPOWER
ANTPOWER
RG814
1 2
3 4
5 6
7 8
+5V_ST
47R
S329
GND
CON4
1 2
3 4
5 6
7 8
ITU_CLK
ITU656_0
ITU656_1
ITU656_2
ITU656_3
ITU656_4
ITU656_5
ITU656_6
ITU656_7
C425
D_CVBS_IN DVB_CVBS
47nF
R400
*
GND
P. 2-23 IDTV POWER SUPPLY
ID_TS_CLK RESET_COFDM
TS_SYNC ITU656[0..7]
ID_TS_VALID D_CVBS_IN
CI_DIR MPEG_ADO
CI_INPACK MPEG_ABCK
GRDYB MPEG_ALRCK TS_TUN_DATA[0..7]
MPEG_SPDIF
ITU_CLK
TXD1B
AV / HDMI / VGA P. 2-12
HPDCTRL B_TX0-
TXD R_TX2-
RXD G_TX1-
VCOM1 R_TX2+
AU_SW TXCLK+
AUOutR3 G_TX1+
AUOutL3 SCL_HD
Y_IN TXCLK-
Pr_IN B_TX0+
Pb_IN SDA_HD
AUL4 GIN+
AUR4 GIN-
SPDIF_OUT BIN+
SPDIF BIN-
P. 2-14
FAL VS_RGB
S-LUM0 HS_RGB
S-CHR0 SOG
FAV RIN+
FAR RIN-
PB-
PR+
SOY
PB+
Y-
Y+
PR-
SV_C0
SV_Y0
VCOM2
CVBS1
AUR2
AUL2
AUR0
Power Supply
AUL0
AUR4
AUL4
SV_Y0_PIP
SV_C0_PIP
CVBS1_PIP
2 - 24
Chassis LX IDTV (iX)
§
TS_CLK
‹
RX_DVB
TX_DVB
Reset_DVB
AIWS
AISD
SPDIF_IN
AISCK
ITU_CLK
ITU656_0
ITU656_1 ›
ITU656_2
ITU656_3
ITU656_4
ITU656_5
ITU656_6
ITU656_7
fi
P. 2-24
SDA_MD
SCL_MD
fl
TS_CLK
TS_START
TS_VALID
RESET_OUT
RXD1B
ANTPOWER
Tuner / COFDM Demodulator
I2C_SCL_5V
I2C_SDA_5V
ANTPOWER
RESET_COFDM
SDA_COFDM
SCL_COFDM
P. 2-10
ON_PBACK POP-REMOVE
ADJ_PWM 24V SENSE
ON_PANEL
ST.BY
33V_PWM
P. 2-16
SIFP0
SIFM0
AUMONO
TUNER_CVBS
VCOM0
TUNER_SC
A/D
A/D
DELAY
TUNER_PIP
TS_DATA[0..7]
TS_CLK
TS_VALID
TS_START