Onkyo BD-SP809 Service Manual page 44

RS232C Schematic Diagram
IC5500
SP3232ECN-L/TR
C5500
(RS232C INTERFACE)
0.1
2
0
1 C1+
C5503 C5505 5.7
2 V+
0.1 47/16V
-2.9
3 C1-
3.4
4 C2+
C5504
C5506
0.1
47/16V -2.9
5 C2-
-5.6
6 V-
C5502
0.1
7 NU
8 NU
R5553 R5552
3.3K 10K
1
Q5551
3.4
MMBTRC106SS
(BUFFER)
0
0
Q5552
MMBTRC106SS
(BUFFER)
A
RS232C CBA
C5501
0.1
3.4
VCC 16
0
GND 15
-5.6
T1OUT 14
0
R1IN 13
3.4
R1OUT 12
3.4
T1IN 11
0
T2IN 10
NU 9
C5553
100/10V
R5551
10K
IC5550
EL817C
PHOTO
COUPLER
1.5 0
0 0
0
1.5
0
B
L5500
BEAD
L5501
BEAD
R5502
0
R5554
240
JK5550
REMOTE-OUT
REMOTE-IN
R5558
R5555
0
0
C
1-12-7
CN5500 (RS232C-CONNECTOR)
1 NU
2 TXD
3 RXD
4 NU
5 GND
6 NU
7 NU
8 NU
9 NU
TO VIDEO CBA
CN5501
CN4002
5 GND
4 RS232C-RXD
3 RS232C-TXD
2 EV+3.3V
1 REMOTE
E5WF0SCRS