Philips AJ-3950, Руководство по обслуживанию

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9-2 9-2
PCS 107 263
TUNER BOARD ATM5 - LAYOUT DIAGRAM
FM/MW versions
Input Frequency Waverange Input Set tuned to Adjust Measure on Scope / Counter
OSCILLATOR
FM - RF
VCO
AM -RF
AM - IF
FM
87,5 - 108 MHz
MW
525 - 1607 kHz
(530 - 1710 kHz)
1)
87,35 MHz
512 kHz
(520 kHz)
1635 kHz
(1730 kHz)
108,25 MHz
lower band end
upper band end
FM
87,5 - 108 MHz
87,5 MHz
108 MHz 108 MHz 2106 C2
5101
AM
468 kHz
5106
5108
FM
98 MHz 98 MHz 3101 152 ±1 kHz
lower band end
upper band end
2106 C1
2106 C3
5104
5105
MW
560 kHz
1500 kHz 2106 C4
5111 560 kHz
1500 kHz
connect pin 24 of
IC 7101 (AM Osc)
with short wire to
ground
1)
for USA /17
see
remark 2)
2)
RC-network serves for damping the IF-filter while adjusting the other one.
A
1 2
1 2
D
f = ±500kHz
V
RF
= 100µV
C
D
f = ±30kHz
V
RF
= 100µV
f
o
f
o
max.
symmetric
or
A
1
3
2
D
f = ±500kHz
V
RF
= 10µV
A
continuous
wave
V
RF
= 1 mV
or
C
1 2
D
f = ±15kHz
V
RF
= 10mV
or
or
1 2
B
D
f = ±30kHz
V
RF
as low as
possible
f
o
max.
symmetric
or
max.
Vcc
7101
pin 30
2k2
4k7
220R
100nF
10
IC 7101
220R
100nF
14
IC 7101
repeat
TUNER ADJUSTMENT TABLE
87,5 MHz
1001 E1 2122 D6
1104 A2 3101 E6
1110 F6 5101 C1
2103 D2 5102 B3
2104 D1 5104 D5
2105 C2 5105 C6
2106 C3 5106 G2
2108 B5 5107a F3
2109 B5 5107b F4
2110 B6 5107c F4
2112 E5 5108 G3
2113 D6 5111 B1
2115 F5 5112 B2
2117 F5 9018 F1
2118 G6 9020 A2
2120 C6 9021 A1
2121 E6 9027 D5
2101 F6 3121 F1
2102 E7 6101 G7
2114 E3 6102 G7
2116 F3 7101 E5
2119 G3 7102 F2
3102 E1 9010 F7
3104 E2 9011 E7
3108 E3 9012 F3
3109 F2 9013 F1
3110 G2 9015 E4
3113 D2 9017 E6
3114 D4 9026 E3
3120 F2 9028 G6