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7B-2
1101 A 1
2106 C2
2137 C5
3149 C5
3173 A 5
5114 C4
5130 A 3
1102 A 1
2107 C2
2138 A 5
3152 A 5
5102 C2
5115 A 4
5131 A 3
1103 C1
2110 C2
2144 B 5
3154 C5
5103 C2
5116 A 4
6101 A 2
1104 B 1
2115 C1
2148 B 4
3157 B 5
5104 C2
5119 B 5
6102 A 1
1105 A 1
2123 A 2
2155 A 3
3158 A 5
5105 B 2
5120 B 4
6103 A 1
1119 C5
2125 A 2
2162 A 2
3159 A 5
5106 B 2
5121 B 4
6104 A 2
1120 A 5
2128 C3
3105 B 3
3160 A 5
5109 B 4
5122 B 3
6106 B 3
1130 B 5
2129 C4
3110 A 2
3161 A 5
5110 B 4
5123 B 2
6107 C5
1131 B 5
2130 A 4
3132 B 3
3170 C5
5111 C3
5124 B 2
6109 C2
2104 A 2
2133 A 4
3142 A 4
3171 C5
5112 C4
5126 B 3
6120 C4
2105 A 1
2135 B 5
3147 B 5
3172 C5
5113 B 3
5127 B4
7102 A 3
1
2
3
ECO 5 TUNER BOARD /
component side view
1
F
C
A
3110
5130
5131
7102
A
2162
FM-OSC
9100
9121
FM-RF
2104
6101
A
9128
A
FM 75 OHM
2155
C
C
2123
2130
1105
FM-RF
F M
E
2125
5122
9129
LW-OSC
1102
5123
FM 300 OHM
C
MW-OSC
C
9134
B
B
A
3132
5124
C
1101
6106
SW-OSC
S W
5126
5106
5105
D
SW
9101
1104
9105
5104
7107
5
5111
2115
4
SW-ANT
SW-RF
B
2107
SW-RF
AM-IF1
1
2106
6109
B
MW-RF
9122
7104
B
5102
2128
2110
C
MW-RF
5103
2129
1103
LW-RF
AM FRAME AERIAL
LW-RF
7105
9111
9133
1 4
5 -
- 0
9 8
2
9 6
3 3
3
3 0
0 3
3 1
This assembly drawing shows a summary
of all possible versions.
For components used in a specific version
marked components to be assembled
see schematic diagram respectively partslist.
as service solution for Local/DX - switching
1
2
3
PCS 100 945
7104 C2
9117 B 2
9129 B 3
2101 C4
2118 B 4
2139 B 2
7105 C3
9118 B 4
9130 C3
2102 C4
2119 B 4
2141 B 1
7107 B 3
9119 C4
9131 A 5
2103 C3
2120 B 4
2142 B 1
7119 C4
9120 B 4
9133 C3
2108 A 4
2122 B 3
2143 A 1
9100 A 2
9121 A 2
9134 B 3
2109 A 4
2124 A 5
2145 C1
9101 B 3
9122 C3
9136 A 5
2111 A 2
2126 C2
2146 C1
9105 B 2
9123 B 1
9137 A 5
2112 B 5
2127 C2
2147 C1
9111 C2
9124 C4
2113 A 4
2131 C2
2149 B 2
9113 B 2
9125 A 3
2114 A 4
2132 C1
2150 B 2
9114 B 2
9126 B 5
2116 B 3
2134 C1
2151 C2
9115 B 3
9128 A 2
2117 A 3
2136 B 1
2152 C3
4
5
5
ECO 5 TUNER BOARD /
4
3
A
A
E
3142
VCO
2133
2138
9126
5119
D
3157
DISCRIMI-
5120
SW
NATOR
AM-IF
2144
GND
B
B
+FM
R-FM
L-FM
2135
L out
R out
5110
VCOkill
STSIG
5114
A
2137
STEREO
AM-AFC
V+
1131
1130
5112
3149
1119
AM-IF2
VCC2
SEARCH
C
C
GND
SENS.
VCC
9124
6107
2SA...
BC...
C
C
B
E
41..
C
B
E
C
A
B
E
ECO5 3396 stage .2, 250698
4
5
5
7B-2
2153 C3
2166 B 2
3112 A 3
3123 A 3
3143 C2
3175 A 2
4105 B 3
4153 B 4
2154 C3
2167 B 2
3113 A 2
3125 A 3
3144 C2
3176 C2
4106 B 4
4154 C3
2156 C4
2168 B 1
3114 A 3
3126 B 3
3145 C2
3177 A 1
4107 C4
4155 A 4
2157 B 4
3101 C3
3115 A 3
3127 B 3
3146 A 1
3178 A 1
4108 B 4
4156 A 2
2158 B 4
3102 C3
3116 A 3
3128 B 3
3148 A 1
3179 A 1
4109 A 3
4157 B 3
2159 C2
3103 C3
3117 B 4
3133 B 4
3153 C2
3180 A 4
4110 A 3
4158 C2
2160 C4
3104 B 3
3118 B 3
3134 B 4
3155 A 2
3181 C3
4111 C1
4159 A 2
2161 A 3
3106 C4
3119 A 3
3136 B 4
3156 A 1
4101 A 4
4120 C2
4160 A 1
2163 A 2
3108 A 4
3120 B 4
3137 B 4
3167 C2
4102 A 4
4150 B 2
4161 A1
2164 B 1
3109 A 4
3121 A 3
3140 B 2
3168 B 3
4103 C2
4151 B 3
4162 C1
2165 B 3
3111 A 3
3122 B 3
3141 C2
3169 B 2
4104 A 2
4152 B 3
4163 C1
4
3
2
1
copper side view
E
3146
4156
2108
2163
2161
3175
4104
7125
3155
7106 7109
4109
4159
3178
3111
7108
2111
2124
1
1
8
3121
4
4
5
5
3133
3120
2116
3122
2157
7120
2119
2142
3118
3169
C
3128
6111
A
7121
7122
B
7101
C
C
3137
7123
2139
3140
2168
3136
4157
2160
2156
7124
3181
E
FM
2153
2127
6130
3102
4107
C
2126
2101
C
3106
A
4103
A
6131
2151
7103
3141
6101
3143
E
2102
3167
4154
This assembly drawing shows a summary
1
F
C
5
4
Chip jumper
of all possible versions.
(not all items shown
For components used in a specific version
in schematic diagram)
marked components to be assembled
see schematic diagram respectively partslist.
as service solution for Local/DX - switching
4
3
2
1
TUNER ADJUSTMENT TABLE
( ECO5 FM/MW- and FM/MW/LW - versions with AM-frame aerial )
Waverange
Input frequency
Input
VARICAP ALIGNMENT
FM
87.5 - 108MHz
(65.81 - 74, 87.5 - 108MHz)
6105 A 4
7120 B 4
6110 A 4
7121 B 3
MW
6111 B 4
7122 B 4
FM/AM-version, 10kHz grid
6130 C2
7123 B 4
530 - 1700kHz
6131 C3
7124 C4
7101 B 2
7125 A 1
FM/MW-version, 9kHz grid
7103 C2
531 - 1602kHz
7106 A 3
7108 A 3
LW
7109 A 3
7111 A 1
153 - 279kHz
MW
FM/MW/LW- version, 9kHz grid
531 - 1602kHz
FM IF
10.7MHz, 50mV
FM
continuous wave
3179
A
FM RF
7111
FM
108MHz
87.5 - 108MHz
(65.81 - 74, 87.5 - 108MHz)
mod=1kHz
87.5MHz
∆f=±22.5kHz
(65.81MHz)
VCO
98MHz, 1mV
B
FM
2
continuous wave
AM IF
2136
4111
450kHz
MW
∆f=±15kHz
4163
V
connect pin 6 of
C
RF
IC 7101 (AM Osc.)
3
with short wire to
AM AFC
ground (pin 4)
MW
continuous wave
V
RF
3)
AM RF
ECO5 3396 stage .2, 250698
4)
MW
1494kHz
FM/MW/LW- and FM/MW-version
( 9kHz grid)
558kHz
531 - 1602kHz
LW
198kHz
MW
1500kHz
∆f = ±30kHz
FM/AM-version, 10kHz grid
V
as low as
RF
530 - 1700kHz
560kHz
possible
Use service test program. By selecting the TUNER TEST test frequencies will be stored as preset frequencies automatically.
1)
If sensitivity of frequency counter is too low adjust to max. channel separation
(input signal: stereo left 90% + 9%, adjust output on right channel to minimum)
3)
For AM RF adjustments the original frame antenna has to be used !
Repeat
7B-2
Tuned to
Adjust
Output
Scope/Voltmeter
8V ±0.2V
108MHz
5130
4.3V ±0.5V
87.5MHz
check
(1.2V ±0.5V)
(65.81MHz)
8V ±0.2V
1700kHz
5123
1.1V ±0.4V
530kHz
check
6.9V ±0.2V
1602kHz
5123
1
1.1V ±0.4V
531kHz
check
8V ±0.2V
279kHz
5122
1.1V ±0.4V
153kHz
check
8V ±0.2V
1602kHz
5123
1.1V ±0.4V
531kHz
check
IC 7101
21
0 ± 3 mV DC
F
2
5119
shortcircuit
2141
to block AFC
A
108MHz
2155
4
MAX
87.5MHz
5131
(65.81MHz)
152kHz ±1kHz
1)
A
98MHz
3142
3
IC 7101
36
100nF
C
5111
4
IC 7101
40
100nF
5112
= 3mV
f
see
o
remark 2)
symmetric
C
5114
0 ± 2 mV DC
2
= 10mV
2106
1494kHz
B
558kHz
5102
4
198kHz
5103
1500kHz
2106
f
o
symmetric
560kHz
5102
ECO5, discr. coil, 090797
2)
RC network serves for damping the IF-filter while adjusting the other one.
4)
MW has to be aligned before LW.
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