Russound MCA-C5 Service Manual page 125

5
D
C
Rear Port COM-A RS-232
C5 0.1uF 50V C5 0.1uF 50V
2 1
C6 C6 0.1uF 50V 0.1uF 50V
2 1 2
V+
B
1 2 6
V-
0.1uF 50V 0.1uF 50V C7 C7
11
sh2 RS232/PGM_TXD T1IN
10
T2IN
12
sh2 RS232/PGM_RXD R1OUT
9
R2OUT
MAX3232/SO MAX3232/SO
A
5
4
R1 R1
1
sh2 485_BIAS
10K 10K
+3.3V
U2 U2
C8 0.1uF 50V C8 0.1uF 50V
1 1 2
C1+
3
C1-
4 1 2
C2+
5
C2-
0.1uF 50V 0.1uF 50V C9 C9
1
14 2
T1OUT
3
7 4
T2OUT
5
13 6
R1IN
7
8 8
R2IN
9
4
3
+3.3V
C1 C1
2 1
0.1uF 50V 0.1uF 50V
+12V
D1 D1
A K
RS-485 Bias Enable Relay
S1BB-13F S1BB-13F
K1 K1
16
1
13
Q1 Q1
2 B
MMBT3904LT1 MMBT3904LT1
4
CY-12V CY-12V
+3.3V
RS-485 DRIVER
R4 R4
1K 1K
U1 U1
1
sh2 RNET_RXD RO VCC
2
RE B
sh2 RNET_TXEN
3
DE A
4
sh2 RNET_TXD
DI GND
MAX3075EASA MAX3075EASA
J2 J2
+3.3V
1
2
3
4
C4 C4
0.1uF 50V 0.1uF 50V
CON4 CON4
RNET Debug
J3 J3
Tie Shield to Chassis GND
10
11
CON9 CON9
GND_EARTH2
3
2
9
KINSUN_3012-02 KINSUN_3012-02
11
8
6
R2 R2 R3 R3
1K 1K 1K 1K
+3.3V
sh7,8 COM_B
R5 R5 22 Ohm 22 Ohm
8
7 1 2
6
5 1 2
R6 R6 22 Ohm 22 Ohm
2 2
sh7,8 COM_A
D2 D2 D3 D3
sh6 LINK_IR_6
D4 D4
2
sh6 LINK_IR_5
sh6 LINK_IR_4
sh6 LINK_IR_3
sh6 LINK_IR_2
sh6 LINK_IR_1
2
1
J4 RNET
BACK PANEL
RNET Out RNET In
J1B J1B J1A J1A
KINSUN_3012-02 KINSUN_3012-02
Russound Inc Russound Inc
C2 Digital Board - COM C2 Digital Board - COM
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C
B
A
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