Rs232 Board Schematic Diagram - Panasonic TH-37LRT12U Service Manual

TH-32LRT12U-A * TH-37LRT12U/M/A

12.20. RS232 Board Schematic Diagram

RS232 BOARD PCB-657-1B
!
D
C
B
A
TH-32/37LRT12
RS232 Board Schematic Diagram
5
UART
J1
RS232_DETECT
5
5
9
9
4
4
8
8
RS232_TX
3
3
7
7
RS232_RX
2
2
6
6
1
1
RS232-MALE
4
+3V3
C5 C1
0.1uF 0.1uF
U1
1 16
C1+
Vcc
C3
2 15
GND
V+
0.1uF
3 14
C1- T1out
4 13
C2+ R1IN
C4
0.1uF
5 12
C2- R1out
6 11
T1IN
V-
7 10
T2out T2IN
C2
0.1uF
8 9
R2IN R2out
SN75C3232E
PCB-657-1B
2L/55*28mm
3
58
J2 +3V3
TP1
TP2
1
TX TEST POINT
2 1
RX TEST POINT
3 1
4
RS232_DETECT
5
HEADER 5
RS232_RX
RS232_TX
RX
TX
TH-32/37LRT12
RS232 Board Schematic Diagram
2 1