Inhaltsverzeichnis
Werbung
M 7-C / M 17-C / M 27-C
Schaltplan Tuner / Circuit Diagram Tuner
1
2
3
4
5
A
0,5V
B
+12V
+FM
FM FRONTEND
3102
220k
2102
3103
µ
47
C
6
3
+B
AGC
1110
D
A
1102
1
FM
ANT.
Ant1
F
a
E
F o
4
GND
F
F
= F + F i
o
a
f
MT
VT
MT
5
3104
G
1103
2
1
H
AM-FRAME SOCKET
I
B
6
5102
LW
= 0,7V
MW
= 0V
2
3108
6105a
7104
HN1V02H
2k2
5
BC338-40
1
MW
3
J
2106
5p2-
30p
1
4
K
7105
BC338-40
3109
3
2k2
2
2108
2109
82p
27p
5103
L
1
LW
M
N
1
2
3
4
5
GRUNDIG Service
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
6
7
8
9
10
5109
3172
10,7 MHz
0E
3173
3107
2150
3181
100n
5110
+7V
10,7 MHz
7
+6V
+8V
IF Out
VCC1
VDD
7
23
35
1,4V
34
33
1,4V
VCC1
VDD
FM-IF2
V Stab B
FM-IF2I
STABILIZER
F 10,7 MHz
if
37
FM-IF1I In
FM
FM
IF1
IF2
Osc Out
8
5
FM Osc.
3140
6
AM
FRONTEND
VT
8
I-Tune
AM
OSC.
2
AM-RF
C
Ripple
AM-Osc.
FM GND
RF GND
2V
1
6
3
4
3184
2129
1 µ
3123
6105b
HN1V02H
7
6
5
2
3
3132
3163
2107
470n
MW-OSC
3124
5123
3129
3
4
+7V
2120
2
+6V
3130
33p
VDD
1
6
2125
3134
560p
LW = 0V
LW-OSC
MW
= 0,7V
7124
7122
LW
= 0,7V
5122
MW
= 0V
BC848C
3
4
BC848C
3169
3137
3128
0E
10k
2k2
2
2123
390p
3131
1
6
V
V
2122
0V
3n9
MW
LW
0V
MW
LW
6
7
8
9
10
M 7-C / M 17-C / M 27-C
11
12
13
14
IF - AM
IF - AM
AM - DET
3
6
1
1
6
2
2
3192
3
4
3
4
2
1
5111
5112
5114
1
450 kHz
450 kHz
450 kHz
2140
470n
38
40
41
36
32
19
20
V Stab A
AM-MIX Out
AM-IF1 In
AM-IF2
AM-AFC
AFC-
AFC+
AFC
AM
AM
IF
DET
CHARGE
PUMP
FM
DET
AM
MIXER
AGC
Fieldstrength
IF GND
Dig. GND
RF GND
FM-Demod
AGC
AF-Out
Indc.
17
26
42
18
0V
44
10
2V
21
2141
100n
3191
3183
2128
µ
3162
10
5120
10,7 MHz
2161
3185
10,7 MHz
75 kHz
4
7
3
V
0V
3197
MW
LW
3125
10k
7109
BC858B
11
12
13
14
3 - 9
GRUNDIG Service
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
15
16
17
18
19
V
0
During communication
152kHz, 50mV pp
4V
V
0V
0
+9,6V
7101
stereo
mono
stereo
VCC2
High = During communication
TEA5762
22
VCC2
29
WRITE Enable
28
DATA
27
CLOCK
6120
31
P1
1N4148
39
2145
2147
FM/AM
CONTROL
220p
220p
P0
30
Mono/
Stereo
24
2135
Left
14
220n
2134
Mute
13
15n
0,7V
STEREO
2133
µ
DECODER
1
2137
Right
15
XTAL
220n
OSC
2136
PILOT
16
15n
Filter
0,9V
2138
µ
2
2
MPX-In
VC0
LPF
3150
25
11
1V
9
0,8V
12
4k7
V
2127
220n
0V
AM
FM
2160
3141
3145
0,5V
12p
2131
+FM
7110
+12V
470n
BC858B
5121
2132
3142
75 kHz
1n
470n
VCC1
+8V
VC0
5115
+7V
VDD
6
+6V
+8V
VCC1
ANTI BIRDY
FILTER
VCC2
3143
2
1
7103
+9,6V
BC858C
3144
1,3V
3186
1k
2142
1k
100n
2158
100n
.....V
FM mode stereo
Signal path
.....V
FM
FM
AM
.....V
AM
AF
15
16
17
18
19
20
21
1102
D 1
1103
G 2
1110
D 4
1121
C 21
1124
F 21
A
2102
C 2
2106
J 4
2107
J 6
2108
L 3
2109
L 3
2120
K 7
2122
M 7
2123
L 7
B
2125
L 7
2127
H 16
0V = No communication
2128
I 13
2129
I
8
2130
J 20
2131
I 17
2132
I 17
2133
G 18
to 24 Front
C
2134
G 19
page 3 - 13
2135
F 19
1121
2136
H 19
2137
G 19
2138
H 18
1
GND
2140
C 14
2141
H 15
1,3V
2
2142
K 19
RDS
D
2143
K 20
3161
3
2144
K 20
470E
ENABLE
2145
E 19
3160
2147
E 19
4
470E
DATA
2148
E 20
2150
C 6
3159
5
2158
L 18
470E
CLOCK
2160
I 15
3158
E
6
2161
I 15
470E
STEREO
2162
H 20
3102
B 2
2148
3103
C 3
220p
3104
G 4
3
STEREO = LOW
3107
C 6
3108
J 2
3109
K 2
F
3123
I
6
1124
3124
K 7
3152
3125
L 10
1
3128
L 9
470E
LEFT
3129
K 9
3130
K 9
3131
M 10
2
4
GND
3132
J 7
G
3134
L 6
3137
L 6
3153
3
3140
F 7
470E
RIGHT
3141
I 16
3142
I 16
3143
K 17
3144
K 17
11,8V
3145
I 17
3146
L 20
11,2V
H
3150
H 19
3151
I 20
3152
F 20
2162
3151
3153
G 20
µ
22
3154
J 20
3155
J 20
3158
E 20
3159
E 20
I
3160
D 20
3161
D 20
3164
3162
I 15
3167
3163
J 9
4
VCC
220E
3164
I 20
+12V
3167
I 20
2130
3154
3169
L 5
22n
3172
B 6
J
to 52 AF
3173
B 6
3155
3181
C 7
page 3 - 35
330E
3183
I 13
3184
I
8
2144
3185
I 13
µ
1
3186
K 16
3188
M 20
3191
I 12
K
3192
C 12
6107
3197
L 10
BZX79/
5102
I
3
2143
C11
5103
L 4
220n
5109
B 6
3146
5110
C 9
5111
C 11
5112
C 12
L
5114
C 13
5115
J 15
5120
I 12
5121
I 15
5122
L 8
5123
K 8
6105a I
5
6105b I
6
M
6107
K 20
6120
E 18
7101
C 16
7103
K 17
7104
J 2
7105
K 2
7109
L 10
7110
I 19
N
7122
L 9
7124
L 6
9533
20
21
3 - 10
Werbung
Inhaltsverzeichnis
