Sharp LC-20SD5E Service Manual page 50

A B
8
7
6
5
RS-232C JACK
CP102
MD24-95V-EC
B102
1 NC
NC
FCM1608KF-102T02
2 RS232_RXD
R102
B101
3 RS232_TXD
FCM1608KF-102T02 100
4 NC NC
5 GND
6 NC
NC
4
7 NC
8 NC R103
9 NC NC
100
3
2
1
A B
H-19
C D
SUB MICON/RS-232C SCHEMATIC DIAGRAM
R110
RF_AGC
L101 1K
P.CON+3.3V R115
SCART1_SW
22uHNLV32
68
NLCV32T
C124
0.1 B
RS232_TXD
RS232_RXD
3.2 3.3 0 -5.6 NC 3.2 NC 3.2
S_SW
16 15 14 13 12 11 10 9
R130 100
R131 100
1 2 3 4 5 6 7 8
0 5.8 5.8 3.1 5.8 -3.0 -5.7 9.2
LEVEL SHIFT
Q101
KTK5132E
SDA
SCL
GND
C D
E
(MAIN PCB)
NC 3.2 NC NC NC NC NC 3.2 NC 3.2
39 38 37 36 35 34 33 32 31
NC
3.2
P0_6
3.2
P0_5
3.2
39 NC
P0_4
R101 4.7K
40 NC
3.2
P4_2/VREF
SUB MICON
NC P6_0
IC101
R5F21244SNFP
NC P6_2
NC P6_1
3.2
P0_3
52 P3_7
NC P0_2
1 NC
NC P0_1
NC P0_0
NC
1 2 3 4 5 6 7 8 9
NC 3.2 NC 3.2 3.2 NC 3.2 3.2 0
NC
3.3
3.3 3.3
X101
16MHz
LEVEL SHIFT
KTK5132E
3.3
Q102
3.3 3.3
R129
4.7K
R114
4.7K
R128
4.7K
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
3.2 3.2 NC
30 29 28 27
NC
P1_3 NC
W815
3.2 RS232_TXD
RS232_TXD
W914
3.2 RS232_RXD
27 P4_5
RS232_RXD
R124
26 NC
P1_6 NC
4.7K
R125
P1_7 NC
4.7K
P2_0 NC
P2_1 NC
P2_2 NC
14 P2_6
P2_3 NC
13 P2_7
SUB_TXD
MODE
NC
P2_4
P2_5 NC
SUB_RXD
RESET
NC
NC NC
P.CON+3.3V
10 11 12 13
5 4
2.8 3.3
NC
NC NC
C123
OUT IN GND
0.1 B
1 2 3
R108 3.4 3.4
0
10K
D107
RB520S-30-TE61
GND
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
F G
H
FROM/TO RSDS
8
F_SDA
F_SCL
FROM/TO SCALER
SDA
SCL
7
FROM/TO 21PIN
SCART1_SW
DTUNER_H
SCART2_SW
6
FROM/TO AV JACK/SWITCH
S_SW
FROM/TO TUNER
RF_AGC
DTUNER_H
5
F_SCL
F_SDA
CP101
A2001WV2-7P
GND 1
SUB TX 2
BUSY/MODE 3
VCC 4
4
SUB RX 5
RESET 6
GND 7
W915
GND
3
FROM/TO POWER1
P.CON+3.3V
DTV_FAN_ON_H
GND
2
PCBF40
CMG114
1
H
H-20