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TUNER BOARD ATM5 - LAYOUT DIAGRAM
7 - 2
1001 E1
1104 A2
1110 F6
2103 D2
2104 D1
2105 C2
2106 C3
2108 B5
2109 B5
2110 B6
2112 E5
2113 D6
2115 F5
2117 F5
2118 G6 9020
2120 C6
2121 E6
2101 F6
2102 E7
2114 E3
2116 F3
2119 G3
3102 E1
3104 E2
3108 E3
3109 F2
3110 G2
3113 D2
3114 D4
3120 F2
3121 F1
6101 G7
6102 G7
7101 E5
7102 F2
9010 F7
9011 E7
9012 F3
9013 F1
9015 E4
9017 E6
9026 E3
9028 G6
TUNER ADJUSTMENT TABLE
TUNER ADJUSTMENT TABLE
Waverange
Input Frequency
2122
D6
3101
E6
5101
C1
OSCILLATOR
5102
B3
5104
D5
5105
C6
87,35 MHz
FM
5106
G2
87,5 - 108 MHz
5107a F3
5107b F4
5107c F4
108,25 MHz
5108
G3
5111
B1
5112
B2
512 kHz
9018
F1
(520 kHz)
A2
MW
9021
A1
525 - 1607 kHz
9027
D5
1)
(530 - 1710 kHz)
1635 kHz
(1730 kHz)
FM - RF
87,5 MHz
FM
87,5 - 108 MHz
108 MHz
VCO
FM
98 MHz
AM - IF
468 kHz
connect pin 24 of
AM
IC 7101 (AM Osc)
with short wire to
ground
AM -RF
560 kHz
MW
1500 kHz
1)
repeat
for USA /17
2)
RC-network serves for damping the IF-filter while adjusting the other one.
7 - 2
Input
Set tuned to
Adjust
Measure on
lower band end
5104
A
or
1
2
∆f = ±500kHz
upper band end
2106 C1
V
= 100µV
RF
lower band end
5105
C
or
1
2
∆f = ±30kHz
V
= 100µV
2106 C3
RF
upper band end
87,5 MHz
5101
A
or
1
2
∆f = ±500kHz
108 MHz
2106 C2
V
= 10µV
RF
7101
pin 30
A
2k2
3
98 MHz
3101
continuous
wave
V
= 1 mV
RF
V cc
IC 7101
10
100nF
5106
C
or
1
2
IC 7101
14
∆f = ±15kHz
100nF
V
= 10mV
5108
RF
see
remark 2)
B
560 kHz
5111
or
1
2
∆f = ±30kHz
1500 kHz
2106 C4
V
as low as
RF
possible
Scope / Counter
f
o
f
o
152 ±1 kHz
f
o
symmetric
symmetric
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