Signal path
FM
AF - left/right
AM
MPX (Audio Frequency)
0.6V
1V
1V
A
1.3V
2
0.7V
3.9V
3.4V
0V
0V
0.7V
0V
0V
4.1V
3.3V
3.9V
1V
1.4V
4.3V
0V
0.5V
0.1V
5.4V
1.3V
1V
0.1V
4.8V
0V
D
4
C
2V
11.4V
0V
1V-8V
3.5V
3.5V
0.7V
0.6V
1.2V
0.7V
1.4V
1.4V
0.9V
0.15V
1.1V
1.1V
0.7V
1V
3
5
1
B
B
1.4V
0.8V
0.6V
2V
0V
0V
0V
0.8V
0.6V
0.8V
4.5V-8V
0V
0V
2V
0.7V
0V
stereo 0.3V
0V
0V
0V
0.7V
4.0V
0V
4.0V
1.4V
0.1V
0V
0V
mono 4.8V
0.5V
4.8V
3.5V
4.7V
4.7V
mono 4.8V
stereo 0.2V
1.4V
0V
0.1V
1.3V
0.6V
1.4V
0.7V
5.2V
7.5V
7V
(5V-12V)
0V
5.4V typ.
11.4V
3.4V
4.1V
...V MW mode
...V LW mode
voltages measured while
set is tuned to a strong transmitter
...V FM mode stereo
EVM
V
5V
0V
152kHz, 50mV
pp
stereo stereomono
5V
0V
TB=10ms
5V
0V
TB=10ms
TUNER BOARD ECO6 - CIRCUIT DIAGRAM
9-1 9-1
PCS 104 425
ECO6 PA, 991102
1105 A1
1121 F14
1122 E14
2101 A3
2103 C7
2104 A3
2106 B4
2107 F4
2108 F3
2109 F3
2110 B2
2111 B3
2119 H6
2120 H6
2122 I6
2123 I6
2124 I6
2125 H6
2126 E7
2127 E7
2128 B8
2129 C7
2130 F12
2131 F8
2132 F8
2133 F8
2134 I9
2135 I9
2136 H14
2137 H13
2138 F9
2139 G9
2140 G10
2141 F10
2144 F12
2145 E11
2146 D13
2147 E12
2148 D12
2149 H7
2150 A10
2152 E4
2153 E5
2155 D5
2159 F6
2161 C11
2163 D11
2164 F10
2165 C7
2166 D12
2167 E12
2169 G8
2186 H13
2187 H12
2188 I12
2189 I13
2190 G11
2191 G11
2192 G12
2193 G11
2194 G11
2195 G10
2196 H12
2197 H11
3101 E4
3102 D4
3103 C6
3104 B8
3105 B6
3106 B2
3107 C3
3108 D2
3109 D3
3123 H3
3125 H2
3128 I3
3132 H4
3134 H6
3137 I7
3141 E7
3142 E7
3143 G7
3144 G8
3145 F8
3152 H14
3153 H14
3155 F12
3156 C12
3157 C12
3158 E13
3159 D13
3160 D12
3161 D13
3166 F13
3167 F12
3169 D11
3170 C12
3176 G7
3180 I3
3181 E6
3186 F13
3187 H12
3188 H12
3189 H12
3190 H12
3191 I12
3192 I12
3193 I13
3194 I13
3195 I12
3196 I10
4101 E2
4102 E2
4104 I5
4109 C3
4110 C4
5102 E3
5103 F2
5109 B9
5110 B10
5111 A9
5112 A11
5114 B11
5119 G9
5121 E11
5122 H5
5123 G5
5130 E6
5131 C6
6103 A3
6105-1 B4
6105-2 G6
6106 B4
6120 B13
6130 D5
6131 C5
6181 G12
6182 G11
6183 H10
7101 B8
7102 C7
7103 H7
7104 D3
7105 D3
7109 H3
7111 C13
7122 I4
7124 I7
7180 H13
7181 I13
7182 I11
7183 H11
T102 A2
T103 A2
T105 E2
T106 E2
T109 B6
T110 F5
T111 F4
T112 F7
T113 A9
T114 A10
T115 A9
T116 F10
T117 G10
T118 F12
T120 E14
T121 E14
T122 E14
T123 E14
T124 G14
T125 F14
T126 F14
T127 F14
T128 C7
T140 F12
T141 F10
T142 F10
LEGEND
* ... only assembled in FM/AM-version SMD jumper
LW ... for LW version only
LW frame ... for LW version with frame aerial only
E_EU ... for East European version only
p ...for provision only
USA ... for USA version only
0R
41xx
7
1
2
3
8
6105
6
HN1V02H
54
SCALER
MULTI-
PLEXER
CONTROL
FILTER
AM
IF
AM
DET
FM
DET
VSTABB
DECODER
CHARGE
PUMP
AGC
OSC
AM DET
FM
IF2
RIPPLE
AGC
STABILIZER
AFC
VDD
VSTABA
AM-IF
MONO/
FM
FRONTEND
CONTROL
XTAL
AGC
PRE-
CTRL
AGC
AM
OSC
AGC
VCC2
FM
OSC
AM
MIXER
MIXER
FM
FM
IF1
FRONTEND
AM
STEREO
STEREO
7111
component mounted
MW=HIGH
E
F
G
H
I
450kHz
/14 FM-OIRT/MW
MPX
AM-AFC
AM FRAME AERIAL
Printed
1 2 3 4 5 6 7 8 9 10 11 12 13 14
VCO
/00 /02 FM/MW/LW
6120
1 2 3 4 5 6 7 8 9
to/from
MW
FM-IF2
VOLTAGE MULTIPLIER
Ferrite Antenna only
AM-RF
STEREO
10 11 12 13 14
A
B
C
D
E
F
G
H
I
A
B
C
D
3170
/01 FM/MW
Printed
LW=HIGH
VERSION DETECTION
LEFT
AM-OSCILLATOR
FM
AM-IF2
TUNER BOARD ECO6 / PORTABLE AUDIO
RIGHT
Printed
VERSION
/00 /02 FM/MW
LW=HIGH
5104
from 2169
LW
RDS only
5105
MW=HIGH
MW
DISCRIMINATOR
3156
Frame Aerial only
AM-IF1
/17 FM/AM
pin 2
3157
ENABLE/MPX
LW only
to 1122
MW
450kHz
GND
LW only
FM-RF
LW only
OSCILLATOR
blue
CLOCK
red
black
Hz
DATA
Q-multiplier
450kHz
LW
VERSION PROGRAMMING COMPONETS
BUFFER AMPLIFIER
FM-OSCILLATOR
FM-IF1
VCC
6
7 8
47R
3166
C-PAD
29
WRITE-EN
25
5114
7P
1
2
3
4
MUTE
13
P0
30
P1
31
PILOT
16
RF-GND1
4
RF-GND2
42
RIGHT
15
RIPPLE
1
VCC1
7
VCC2
22
9
VCO
VDD
23
VSTABA
38
VSTABB
34
21
FM-DEMOD
18
37
FM-IF1-IN
FM-IF2
35
33
FM-IF2-IN
FM-IN
43
FM-MIXOUT
39
FM-OSC
5
FM-RF
3
I-TUNE
8
IF-GND
1714
LEFT
LPF
12
24
MPX-IN
11
TEA5757H
AF-OUT
10
AFC+
20
AFC-
19
AGC
44
AM-AFC
32
AM-IF1-IN
41
AM-IF2
36
AM-MIXOUT
40
AM-OSC
6
AM-RF
2
27
CLOCK
DATA
28
DIG-GND
26
FIELDSTR-IND
33K
3101
7101
T126
1121
1
2
3
4
1n
2192
1SV228
100n
2150
10n
2188
6131
2187
10n
T114
2139
2164
470n
15p
220n
2127
T124
T128
T125
2134
22n
USA
3152
470R
100n
2163
LW
15n
22n
USA
15n
3161
220n
2136
22K
3167
47R
1u
2138
2u2
0R
4102
*
2133
3191
4K7
0R
2144
470n
*
0R
4110
4109
*
1SV228
6130
4101
0R
8
100K
3156
5111
1
2
3
4
6
7
2
G
1
I
3
O
2161
100n
4M7
5109 5110
G
2
I
1
O
3
3107
3170
100K
2186
220u
1
2
7
1n
2166
33K
3176
6105-1
HN1V02H
470R
3159
100n
2165
3109
2K2
5130
RT-01T
1105
3155
47R
T127
3123
4K7
7182
BC847C
100K
3157
BC857C
2123
390p
7103
T113
220n
2189
T140
T142
T110
11p
2128
10u
4
5
6
78
2106
3144
5102
7KL
1
2
3
1K
470R
3153
3108
2K2
22u
2190
82p
2140
3189
22K
3195
470K
3196
10K
3128
2K2
T116
100n
2141
3137
15K
7109
BC857B
1
2
3
4
6
78
6106
BAS216
5119
BZX284-C11
6183
2125
560p
BAS216
6120
7P
1
2
3
4
6
7 8
6182
5112
33p
2159
BAS216
2145
220p
1122
1
2
3
4
5
470R
2195
22u
T141
3160
3187
1K
T123
22K
3143
7124
BC847C
2169
2n2
3181
USA
1K8
47R
3132
2149
2
3
6
78
33p
5122
1
2131
470n
10n
2196
3142
100K
3169
12p
2167
75K
5121
DT-381
150K
BC337-40
7104
33p
2111
2110
100p
100p
2108
10K
3180
2101
47p
3193
2K2
3n3
2122
2153
15p
BC847C
7181
6181
3103
6K8
BAV99
22n
2124
*
2148
18p
2120
22p
LW
1
2
34
6
78
2n2
7105
BC337-40
5123
T112
3141
2129
100u
56K
2K2
3145
3104
2155
11p
10K
330R
330p
2126
3125
220p
2146
T109
BC847C
7122
T111
T103
T106
T102
T105
470n
BF550
7102
470n
2132
2130
2107
1u
10p
2109
3192
1M
BC847C
7183
3186
180R
3106
22R
3102
100K
2197
10n
2104
100p
T115
2119
10p
T121
T122
2147
T120
T117
220p
220R
3105
5131
2152
33n
3194
100K
BC847C
7111
*
BAV99
6103
1
2
34
6
78
4104
0R
22K
7PA
5103
7180
BC857B
3134
2103
2135
3
6
T118
1n
2193
1n
6105-2
HN1V02H
5
1n
2194
220n
2137
470R
3158
3188
2K2
22u
2191
3190
10K
VCC2
MPX
VCC1
Vref
P0
P0
VDDVDD
P01
Vref
P0
P01
MPX
P1
P0
P1
VDD
VCC1
VCC1
VCC2
VDD
LW
330k
LW
p
p
20p
LW frame
560p
E_EU
12p
E_EU
PROGRAMMABLE
OUTPUT PORTS
p
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