Service manual

RVM SCHEMATIC
FIGURE 6-9
6-18
March 2000
Part No. 001-3139-502
25
15
26
16
K1
+12V
Q13 (1)
6
8
11
9
13
4
1
16
R11
300
R12
300
C3
.1
C4
.1
R4
100k
R13
220k
R14
220k
U48A
3403
+
R3
100k
2
3
1
+
C89
2.2
R15
10k
U31-27 (1)
U31-14 (1)
17
2
3
U40
EEPOT
6
5
INC
U / D
V
H
CS
VL
V
W
R16
10k
+5V
U31-29 (1)
U46D
3403
+
14
12
13
R17
10k
TP2
+
C90
10
U27
7911FSK
5
RC
+5V
21
18
11
1
MC 4
MC1
BRTS
RING
R10
300
+
C92
10
U46B
3403
+
R9
10k
7
6
5
R8
10k
C2
.1
R7
300
+
C91
10
U34C
3403
+
8
9
10
R2
10k
R5
10k
U31-15 (1)
+5V
71
6
5
U39
EEPOT
2
3
CS
VL
V
W
INC
U / D
V
H
U31-14 (1)
U31-27 (1)
R177
10k
C126
2.2
R176
620
8
TC
17
19
20
MC0
MC2
MC3
Y6
2.4576 MHz
C7
10pF
C6
20pF
24
23
XTAL/CLK
XTAL2
25
26
10
3
CD
RD
TD
RESET
U31-4 (1)
U31-10 (1)
U31-11 (1)
U9-5 (1)
DTR
16
R18
910
C5
.0022
6
7
CAP1
CAP2
R20
300
R19
300
C10
.1
C9
.1
R23
100k
R22
220k
R25
220k
U48B
3403
+
R24
100k
6
5
7
+
C93
2.2
R26
10k
U31-27 (1)
U31-14 (1)
17
2
3
U41
EEPOT
6
5
INC
U / D
V
H
CS
VL
V
W
R29
10k
+5V
U31-12 (1)
U47B
3403
+
7
5
6
R28
10k
TP3
+
C94
10
U28
7911FSK
+5V
21
18
11
1
MC 4
MC1
BRTS
RING
5
RC
17
19
20
MC0
MC2
MC3
Y7
2.4576 MHz
C11
10pF
C8
20pF
24
23
XTAL/CLK
XTAL2
25
26
3
CD
RD
RESET
U24-4 (1)
U24-10 (1)
U9-5 (1)
DTR
16
R21
910
C12
.0022
6
7
CAP1
CAP2
27
28
R27
620
+
C101
2.2
R57
100k
+4.5V
U1-54 (1)
FSK 2
U37A
74C906
R56
10k
+9V
8
6
9
12
U32C
4066B
1
2
13
U33A
4066B
R58
10k
U38B
U1-52 (1)
AUDIO
LEVEL 2
43
R6
620
+
C100
2.2
R52
100k
+4.5V
U1-48 (1)
U37D
74C906
R55
10k
+9V
1
13
2
98
U32A
4066B
4
3
5
U32B
4066B
R54
10k
U37E
U1-51 (1)
1011
R91
100k
+4.5V
R65
100k
+4.5V
R31
300
R30
300
C15
.1
C14
.1
R34
100k
R33
220k
R36
220k
U48C
3403
+
R35
100k
9
10
8
+
C95
2.2
R37
10k
U31-27 (1)
U31-14 (1)
17
2
3
U42
EEPOT
6
5
INC
U / D
V
H
CS
VL
V
W
R40
10k
+5V
U31-28 (1)
U47A
3403
+
1
3
2
R39
10k
TP4
+
C96
10
U29
7911FSK
+5V
21
18
11
1
MC 4
MC1
BRTS
RING
5
RC
17
19
20
MC0
MC2
MC3
Y8
2.4576 MHz
C16
10pF
C13
20pF
24
23
XTAL1
XTAL2
25
26
3
CD
RD
RESET
U23-4 (1)
U23-10 (1)
U9-5 (1)
DTR
16
R32
910
C17
.0022
6
7
CAP1
CAP2
29
30
R38
620
+
C102
2.2
R60
100k
+4.5V
U38D
74C906
R59
10k
+9V
4
5
3
98
U34B
4066B
8
9
6
U34C
4066B
R61
10k
U38E
U1-55 (1)
AUDIO
LEVEL 3
1011
R1
300
R41
300
C19
.1
C18
.1
R44
100k
R43
220k
R46
220k
U48D
3403
+
R45
100k
13
12
14
+
C97
2.2
R47
10k
U31-27 (1)
U31-14 (1)
17
2
3
U43
EEPOT
6
5
INC
U / D
V
H
CS
VL
V
W
R50
10k
+5V
U31-13 (1)
U47C
3403
+
8
10
9
R49
10k
TP5
+
C98
10
U30
7911FSK
+5V
21
12
11
1
MC 4
RTS
BRTS
RING
5
RC
17
19
20
MC0
MC2
MC3
Y9
2.4576 MHz
C20
10pF
C1
20pF
24
23
XTAL1
XTAL2
25
26
3
CD
RD
RESET
U25-4 (1)
U25-10 (1)
U9-5 (1)
DTR
16
R42
910
C21
.0022
6
7
CAP1
CAP2
31
32
R48
620
+
C103
2.2
R63
100k
+4.5V
U38A
74C906
R62
10k
+9V
11
12
10
12
U34D
4066B
1
2
13
U34A
4066B
R64
10k
U38F
U1-57 (1)
AUDIO
LEVEL 4
1213
U1-56 (1)
FSK 3
U1-58 (1)
FSK 4
+
C117
2.2
R93
10k
U31-27 (1)
U31-14 (1)
1
7
2
3
U44
EEPOT
6
5
INC
U / D
V
H
CS
VL
V
W
R94
10k
+5V
U22-26 (1)
U47D
3403
+
14
12
13
R95
10k
R92
100k
+4.5V
R86
82k
C27
.001
R84
47k
U13A
3403
+
+4
.5V
1
2
R85
100k
C26
220pF
+
C116
10
21
U38C
10 11
3
12
56
R90
10k
+9 V
R89
10k
+5 V
U1-64 (1)
AUDIO
CONTROL
U33D
4066B
12
11
R87
10k
+9V
U36C
74C906
65
R88
10k
+5V
U1-7 (1)
AUDIO LEVEL
+
C104
2.2
R66
82k
C22
.001
R53
47k
U51A
3403
+
+4.5V
R67
100k
C23
220pF
1
2
3
R75
10k
U37D
R78
10k
+9V+5V
65
U1-65 (1)
(1200 Hz)
4
3
5 U33B
4066B
R76
10k
U37B
74HC906
R77
10k
+9V+5V
43
U1-66 (1)
(NOTCH)
9
8
6 U33C
4066B
R79
100k
R74
100k
+4.5V
R68
4.99
+
C105
2.2
R69
49.9k
R70
4.99k
+
C106
2.2
R71
4.99k
R73
49.9k
R72
4.99k
+
C107
2.2
4
2
3
17
19
18
10
11
U15-5 (1)
(120 kHz)
5
16
+4.5V
S1A
S1B
CLKA
CLKB
HPB
BPB
INVB
INVA
BPA
HPA
U45
MF10
R80
100k
+
C100
33
16
IFA IN
+
C111
10
+
C112
10
C113
33
C24
.015pF
+
C110
10
+
C109
10
10
11
LIMD1
LIMD2
MUTE IN
3
+5V
IFAD1
IFAD2
IFAO
1
15
14
R81
2k
12
LIM IN
U20
SA604D
U13C
3403
+
9
10
11
RSSI
OUTPUT
5
R82
100k
C25
.1
R83
5.1k
+
C114
1
U13D
3403
+
12
13
14
U21-6 (1)
10
P1
1
2
3
4
33
34
35
36
+5V
F3
1A
2
1
3
-5V
J5
1
Z2
2
3
C80
.01
+
C122
47
-5V
SOURCE
F1
1A
11
10
-12V
1
Z4
2
3
C87
.01
+
C121
47
-12V
SOURCE
F2
1A
5
4
6
+12V
1
Z1
2
3
C77
.01
+
C119
47
+12V
SOURCE
5
6
37
38
7
8
39
40
+12V
-12V
INPUT
INPUT
INPUT
13
14
45
46
-5V
INPUT
F4
2A
8
7
9
+5V
1
Z3
2
3
C83
.01
+
C118
47
+5V
SOURCE
U18
78S09
1
3
2
+
C120
47
C84
.01
+9V
SOURCE
R170
10k
R171
10k
+
C123
1
U13B
3403
+
6
5
7
+
C124
1
R166
10k
+4.5V
TP1
SOURCE
R164
430
CR9 (GRN)
6
15
SAB
AGND
12
CL
9
LSH
TP6
+9 V
C795
.01
C74
.01
C73
.01
C72
.01
C71
.01
C70
.01
C68
.01
C66
.01
C65
.01
C64
.01
C63
.01
C61
.01
+5V
7
8
VA+
VD+
+9V
C60
.01
C58
.01
C55
.01
C54
.01
U32D
4066B
IN
GND
OUT
IN
GND
OUT
IN
GND
OUT IN
GND
OUT
IN
GND
OUT
NOTES:
1. ALL RESISTORS ARE IN OHMS AND ALL CAPACITORS IN MICROFARADS
UNLESS OTHERWISE SPECIFIED.
2. IC PINS NOT SHOWN:
U13, U51
U27, U28, U29, U30
U45
U34, U35, U36
U20
U39, U40
U41, U42, U43, U44, U46
IC
PIN NUMBERS
+5V
+9V -5V -9V GND
4
2
7
4
4
14
8
11
9,22,12
13,14
2,13
7
4
8
11
4
+
C115
2.2
18
MC1
12
RTS
12
RTS
12
RTS
-
-
-
-
-
-
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-