Sharp LC-20SD5E Service Manual page 55

A B
8
7
6
5
4
3
2
1
A B
H-29
C D
OFDM/TUNER SCHEMATIC DIAGRAM
(MAIN PCB)
0 1.5 0 1.0 1.7 1.3 1.3 3.3 1.3 1.3 1.0 1.3 1.3
48 47 46 45 44 43 42 41 40 39 38 37
C4001 NC
0.1 B 3.3
VDD33
1.0
C4002 0.1
VDD1
B
C4003 0
GPI08
100P CH
R4000
NC GPI07
10K
NC GPI06
17 AGCBB
1.0
VDD1 33 D0
48 ERROR
3.3
VDD33 49 GPI01
64 SCANMODE
GPI05
NC
NC GPI04
NC NC GPI03
NC GPI02
C4004 NC GPI09
100P CH 1.0
VDD1
C4000
3.3 VDD33
100P CH
0
OFDM DEMODULATOR 1 2 3 4 5 6 7 8 9 10 11 12
IC4000 NC 2.5 NC NC 2.5 2.5 0.8 0 1.7 1.7 0 1.0 2.5
STV0362
R4001
470
R4002
470
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C D
E F
FROM/TO TUNER
TSDA
TSCL
TINP
TINM
TIAGC2
1.3 3.3 1.3
R4008
36 35 34 33
10K
3.3 FERESET
RESET FROM/TO ASIC
C4032
1.0
VDD1
FERESET
R4012 FEERROR
3.3
100P CH
STM_SCL
SCL
STM_SDA
47 STM_SCL
R4006 47
3.3 STM_SDA
SDA
C4036
3.3 FROM/TO COMMON INTERFACE
VDD33
100PCH
1.3
DIRCLK TS_IN_CLK
R4011 10K TS_IN_DATA0
0 TS_IN_DATA1
CS1
TS_IN_DATA2
R4009 10K
TS_IN_DATA3
0
CS0 TS_IN_DATA4
R4010 10K TS_IN_DATA5
1.0 TS_IN_DATA6
VDD1
TS_IN_DATA7
TS_IN_STRT
C4033
AUX_CLK NC
TS_IN_VAL
0.1 B
3.4
VDD33
R4016
3.3 TSDA
SDAT
100
R4015
3.3 TSCL
SCLT
C4034
100
100P CH
1.0
VDD1
C4035
NC
AGCRF
0.1 B
0
13 14 15 16
0.9 0.9 2.5
C4030
C4029
B4001
W905
0.1 B
0.1 B
X4000
C4028 FCM1608CF-600T06
27MHz 100PCH
B4002 L4002
C4031
2.2uHNLV25
FCM1608CF-600T06
0.1 B
B4000 L4000
2.2uHNLV25
FCM1608CF-600T06
L4003
2.2uHNLV25
W906
OFDM_A_GND
W923
W925
W927
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
FROM/TO POWER I/O
3V3
2V5
1V
GND
PCBF40
CMG114
G H
8
7
6
5
4
3
2
1
H-30