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A
B
C
DIGITAL 3/5
1
0
2
5.0
5.0
11.9
0.2
IC57
0.2
0.2
0.2
IC57
0.2
0.2
-11.4
3
0
0
0
0
0
0
4
0
1.5
3.4
XM/DT IC
1.3
0
B-1
0
0
3.4
3.4
5
(U, C models)
6
0
0
0
4.0
0.2
0
DIR
3.4
DIGITAL IN
0.2
4.5
0
4.5
5.0
3.4
0
7
0
4.0
0
5.0
0.2
0
0
5.0
0
0
3.3
0
0.2
0
0
8
5.0
3.4
0
IC52
5.0
IC52
2.5
2.0
2.0
4.5
IC52
IC52
2.5
2.0
2.0
4.5
IC52
IC52
0
4.9
0
9
IC47: R1172S121D-E2-F
IC48: R1172H331D-T1-F
Voltage regulator
Voltage regulator
V
DD
6
1
V
OUT
V
DD
4
5
10
Vref
Vref
Current Limit
Current Limit
CE
3
2,5
GND
CE
1
2
Pin No.
Symbol
Description
Pin No.
Symbol
Description
1
VOUT
Output Pin of Voltage Regulator
1
CE
Chip Enable Pin
2, 5
GND
Ground Pin
2
GND
Ground Pin
3
CE
Chip Enable Pin
3
NC
No Connection
4
NC
No Connection
4
V
DD
Input Pin
5
V
Output Pin of Voltage Regulator
6
VDD
Input Pin
OUT
D
E
F
Page 114
H2
to OPERATION (4)_W442
SELECTOR
0
3.4
0
0
3.4
0
0
3.4
3.4
3.4
0
0
3.3
0
0
0
0
1.2
3.3
3.4
0
0
0
3.4
0
3.3
3.4
1.2
0
1.6
0
0
0
3.4
0
1.2
0
B-2
3.4
0
1.6
1.6
0
1.6
1.2
3.4
0
0
3.4
3.4
3.4
0
3.4
3.4
1.2
3.4
3.4
0
to DIGITAL 1/5
IC54: TC74VHCT541AFT
IC52: TC74VHCU04FT
IC50: TC74VHC541FT
Hex inverters
Octal bus buffer
Octal bus buffer
V
OUT
G1
1
20
Vcc
G1
1
20
Vcc
1A
1
14
VCC
1Y
2
13
6A
A1
2
19
G2
A1
2
19
G2
2A
3
12
6Y
A2
3
18
Y1
A2
3
18
Y1
2Y
4
11
5A
A3
4
17
Y2
A3
4
17
Y2
3A
5
10
5Y
A4
5
16
Y3
A4
5
16
Y3
3Y
6
9
4A
GND
A5
6
15
Y4
GND
7
8
4Y
A5
6
15
Y4
A6
7
14
Y5
A6
7
14
Y5
A7
8
13
Y6
A7
8
13
Y6
A8
9
12
Y7
A8
9
12
Y7
GND
10
11
Y8
GND
10
11
Y8
G
H
1.2
3.0
3.4
4.9
3.0
1.2
0
0
3.0
IC48
REGULATOR
0
3.4
0
0
0
1.7
0
0
0
0
3.4
1.7
0
0
1.7
1.7
1.0
0
0
1.7
1.7
0
0
0
0
1.3
0
0
3.4
0
0
IC54
0
0
0
1.7
0
0
0
0
0
1.7
0
1.7
1.3
0
1.3
0
3.4
0
0
3.4
3.4
1.2
3.4
DSP
0
3.4
0
3.4
0
3.4
3.4
3.4
1.7
1.2
0
0
0
3.4
1.2
1.5
2.1
0
3.4
No replacement part available.
2.0
3.4
0
3.4
0
0
0
3.4
IC56: TC74VHC08FT
IC57: NJM4565M
IC55: TC74VHC157FT
Dual operational amplifier
Quad 2-channel multiplexer
Quad 2-input AND gate
SELECT 1
16
Vcc
1A
1
14
Vcc
V+
1A 2
A S G
15
ST
8
1B
2
13
4B
1B 3
B A
14
4A
1Y
3
12
4A
1Y 4
Y B
13
4B
2A
4
11
4Y
2A 5
A Y
12
4Y
2, 6
2B
5
10
3B
–INPUT
OUTPUT
2B 6
B A
11
3A
+INPUT
1, 7
2Y 7
Y Y B
10
3B
2Y
6
9
3A
3, 5
GND 8
9
3Y
GND
7
8
3Y
V–
4
I
J
K
to DIGITAL 2/5
IC50
PL/PR
FL/FR
C
SL/SR
SBL/SBR
ANALOG IN
3.4
0
0
3.4
3.4
0
3.3
0
0
0
0
0
3.4
0
0
3.4
0
0
0
0
0
3.4
0
0
3.4
0
0
3.4
0
0
0
0
0
0
0
0
3.4
0
0
0
0
3.4
0
0
0
3.4
0
3.4
0
3.4
3.4
3.4
3.4
3.4
0
3.4
1.8
0
3.4
3.4
0
0
0
0
3.4
0
0
0
3.4
0
2.0
0
3.4
0
2.1
0
1.7
3.4
1.5
0
0
2.0
3.4
3.4
0
2.1
0
0
3.4
1.5
0
3.4
3.4
0
3.4
1.7
64M SDRAM
16M FLASH ROM
POINT B-1 XL41 (Pin 28 of IC42)
POINT B-2 XL42 (Pin 29 of IC41)
L
M
N
RX-V863/HTR-6180/DSP-AX863SE/DSP-AX863
DSP-
DSP-
RX-V863/
RX-V863/HTR-6180
RX-V863
RX-V863
AX863
AX863SE
HTR-6180
IC41: LC89057W-VF4AD-E
Digital audio interface transceiver
EMPHA/UO
AUDIO/VO
INT
CL
CE
CI
XMODE
32
33
35
40
39
38
41
RXOUT
1
Microcontroller
Cbit, Ubit
37
DO
I/F
RX0
2
36
RERR
RX1
3
RX2
4
Input
Demodulation
Data
RX3
5
21
RDATA
Selector
&
Selector
Lock detect
RX4
8
RX5/VI
9
24
SDIN
RX6/UI
10
16
RMCK
LPF
13
PLL
17
RBCK
Clock
20
RLRCK
TMCK/PIO0
44
Selector
22
SBCK
TBCK/PIO1
45
Modulation
1/N
&
23
SLRCK
TLRCK/PIO2
46
Parallel Port
TDATA/PIO3
47
TXO/PIOEN
48
29
28
27
34
XIN
XOUT XMCK CKST
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
# Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
109
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