Sharp LC32DV24U Service Manual - Page 62

Scaler Video/audio Schematic Diagram

Page 62 highlights

A 8 7 6 5 4 B FROM/TO JACK3 PC_V PC_H AV3/AV4_Y AV1_CVBS VGA-G AV3/AV4_PB VGA-B AV3/AV4_PR VGA-R S1_DET SPDIF AV2_CVBS FROM/TO TUNER TU_CVBS I2C_CLK I2C_DATA TO HDMI HP_RST FROM/TO SCALER POWER AD_A3.3V FROM/TO AV SWITCH2 SW_Y_IN SW_C_IN MCLK SDOUT LRCK BCLK 3 2 1 A B H-27 C D E F SCALER VIDEO/AUDIO SCHEMATIC DIAGRAM (DIGITAL PCB) IC2801 R8J66954BG SCALER PC_V PC_H SW_Y_IN TU_CVBS AV1_CVBS AV3/AV4_Y SW_C_IN AV2_CVBS VGA-G C2927 0.1 B AV3/AV4_PB 3.2 3.2 C2946 3.2 C2937 9 0.1 B 1.7 0.1 B C2939 2.6 C2938 11 0.1 B 1.3 0.1 B C2940 0 C2931 12 0.1 B 1.9 0.1 B C2941 1.6 0.1 B C2932 10 2.0 C2928 0.1 B 3.3 0.1 B 0.9 C2942 3.2 C2933 0.1 B C2934 13 0.1 B 1.6 C2943 1.6 0.1 B 1.9 0.1 B J1 PCVIN K1 SSIN1 K2 SSIN2 L1 VIN3A L2 VIN1A L3 VIN2A M1 VREFA M2 VIN4A M3 VRPA N1 VIN2B N2 VIN6A N3 VIN5A N4 VRMA P1 VRPB P2 VREFB P3 VIN3B VGA-B C2925 0.1 B AV3/AV4_PR VGA-R C2926 0.1 B C2929 0.1 B C2944 1.6 C2935 0.1 B 1.3 0.1 B 2.7 C2936 1.6 0.1 B C2945 14 1.6 0.1 B C2947 3.3 0.1 B 3.3 R2837 3.3 1K R1 VREFC R2 VRMB R3 VIN4B T1 VRPC T2 VIN2C U1 VRMC U2 VIN3C V1 LPF SICL V9 W9 ROUT LOUT I2C_CLK I2C_DATA R2853 10K R2857 10K 3.3 V5 SPDIFO 3.3 W5 ACLK 3.3 W6 ADATAO 3.5 Y6 LRCKO 3.4 AA6 BCKO 3.3 V6 SANT 3.3 Y7 RFAGC(GPIO) DAC_VREF ROUT LOUT SCLK0(GPIO) AA8 3.3 SRXD0(GPIO) Y8 3.3 STXD0(GPIO) W83.3 ASW2 QBLCA J21 3.3 QBLCB(GPIO) J20 QBLCC(RXD0)J19 3.3 J18 3.3 BL_PWM R2846 4.7K R2847 10K R2850 4.7K C2959 0.1 B V8 3.3 SCIRXD V7 3.3 SCISCK(GPIO) W73.3 C2965 0.1 B ASW0 ASW1 ASW2 VDIM LCD-H TWIRE_RXDC TWIRE_TXDC MCU_SCIRXD MCU_SCITXD IIC_OFF 4321 0 A0 0 A1 0 A2 0 Vss 5678 Vcc 3.4 WP 0 SCL 3.4 SDA 3.4 EEP_ROM IC IC2805 AT24C256BN-10SU-1.8 R2856 C2968 10K R2860 0.1 B 4.7K R2862 4.7K 1.6 W3 1.7 AA3 1.7 AA4 0 V4 3.3 W4 0 Y5 R2838 4.7K W881 10K R2841 R2839 4.7K G W889 W890 I2C_DATA I2C_CLK LRCK BCLK DVD-H HP_RST 10K S1_DET 10K R2842 R2840 SDOUT MCLK SPDIF ROUT0.001 B 0.001 B C2951 0.1 B C2950 10V 22 V-S C2949 C2948 LOUT NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE C D NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL. E F G H 8 7 TO SURROUND LOUT_FI 6 ROUT_FI FROM/TO JACK3 ROUT_FI LOUT_FI ASW2 ASW1 TWIRE_RXDC TWIRE_TXDC 5 FROM/TO FLASH IIC_OFF DVD-H I2C_CLK I2C_DATA TO AV SWITCH2 ASW0 DVD-H 4 TO SURROUND DVD-H FROM/TO MICON I2C_CLK I2C_DATA MCU_SCIRXD MCU_SCITXD 3 FROM/TO REGULATOR2 LCD-H VDIM GND AT+3.3V D3.3V 2 PCBDH0 CEG352 1 H H-28

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A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
W889
W890
W881
IC2805
AT24C256BN-10SU-1.8
EEP_ROM IC
1
2
3
4
5
6
7
8
R2837
1K
R2850
4.7K
R2853
10K
R2857
10K
R2860
4.7K
R2862
4.7K
R2856
10K
R2846
4.7K
R2841
10K
R2847
10K
R2842
10K
R2840
10K
R2839
4.7K
R2838
4.7K
C2947
0.1
B
C2945
0.1
B
C2940
0.1
B
C2965
0.1
B
C2939
0.1
B
C2946
0.1
B
C2941
0.1
B
C2942
0.1
B
C2933
0.1
B
C2943
0.1
B
C2944
0.1
B
C2935
0.1
B
C2936
0.1
B
C2951
0.001
B
C2928
0.1
B
C2959
0.1
B
C2925
0.1
B
C2927
0.1
B
C2949
0.1
B
C2929
0.1
B
C2926
0.1
B
C2950
0.001
B
C2968
0.1
B
C2937
0.1
B
C2938
0.1
B
C2931
0.1
B
C2932
0.1
B
C2934
0.1
B
V8
V7
W7
AA8
Y8
W8
J21
J20
J19
J18
IC2801
R8J66954BG
SCALER
J1
K1
K2
L1
L2
L3
M3
N2
P2
P1
P3
R1
R2
R3
U1
U2
V1
N4
N3
N1
M2
M1
T1
W3
AA3
AA4
V4
W4
Y5
V5
W5
W6
Y6
AA6
V6
Y7
W9
V9
T2
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
C2948
22
10V
V-S
PC_V
PC_H
SW_Y_IN
TU_CVBS
AV1_CVBS
PC_V
PC_H
AV3/AV4_Y
AV3/AV4_Y
AV1_CVBS
VGA-G
AV3/AV4_PB
VGA-B
SW_C_IN
AV3/AV4_PR
AV2_CVBS
VGA-R
S1_DET
VGA-G
SPDIF
LOUT_FI
AV2_CVBS
ROUT_FI
AV3/AV4_PB
TU_CVBS
I2C_CLK
I2C_DATA
ROUT
ROUT_FI
LOUT_FI
LOUT
VGA-B
ASW2
ASW1
HP_RST
TWIRE_RXDC
AV3/AV4_PR
TWIRE_TXDC
VGA-R
AD_A3.3V
IIC_OFF
DVD-H
I2C_CLK
I2C_DATA
SW_Y_IN
SW_C_IN
I2C_CLK
MCLK
I2C_DATA
SDOUT
ASW0
LRCK
DVD-H
BCLK
DVD-H
ASW0
ASW1
I2C_CLK
ASW2
ASW2
I2C_DATA
VDIM
MCU_SCIRXD
BL_PWM
MCU_SCITXD
LCD-H
TWIRE_RXDC
TWIRE_TXDC
MCU_SCIRXD
MCU_SCITXD
IIC_OFF
LCD-H
VDIM
GND
AT+3.3V
D3.3V
I2C_DATA
I2C_CLK
MCLK
DVD-H
S1_DET
SPDIF
SDOUT
LRCK
BCLK
HP_RST
LOUT
ROUT
TO SURROUND
FROM/TO MICON
H-28
H-27
FROM/TO TUNER
PCBDH0
CEG352
FROM/TO REGULATOR2
TO AV SWITCH2
FROM/TO FLASH
FROM/TO JACK3
TO SURROUND
FROM/TO AV SWITCH2
FROM/TO SCALER POWER
TO HDMI
FROM/TO JACK3
SCALER VIDEO/AUDIO SCHEMATIC DIAGRAM
SCLK0(GPIO)
SRXD0(GPIO)
STXD0(GPIO)
QBLCB(GPIO)
QBLCC(RXD0)
QBLCA
PCVIN
SSIN1
SSIN2
VIN3A
VIN1A
VIN2A
VRPA
VIN6A
VRPB
VREFB
VIN3B
VREFC
VRMB
VIN4B
VRMC
VIN3C
LPF
VRMA
VIN5A
VIN2B
VIN4A
VREFA
VRPC
RFAGC(GPIO)
SCISCK(GPIO)
DAC_VREF
ROUT
LOUT
SPDIFO
ACLK
ADATAO
LRCKO
BCKO
SANT
SCIRXD
SICL
A0
A1
A2
Vss
SDA
SCL
WP
Vcc
(DIGITAL PCB)
VIN2C
14
13
10
12
11
9
3.2
3.2
3.2
1.7
2.6
1.3
0
1.9
1.6
2.0
3.3
0.9
3.2
1.6
1.6
1.9
1.6
1.3
2.7
1.6
3.3
3.3
3.3
1.6
1.6
1.7
1.7
0
3.3
0
3.3
3.3
3.3
3.5
3.4
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
0
0
0
0
3.4
0
3.4
3.4