Philips AZ1009 Service Manual page 23

0001 B 2 2104 A 2 2111 B 3 2117 A 4
1101 A 4 2105 A 2 2112 B 1 2118 A 4
1102 B 4 2106 A 3 2113 B 2 2119 B 4
2101 A 1
2108 A 2 2114 B 1 2120 B 1
2102 A 2 2109 A 3 2115 A 1 2121 B 1
2103 A 2 2110 B 3 2116 B 4 2122 B 1
1 2
TUNER BOARD / component side view
2103
2101 2102
8100
5106
A
16 17
2104
A
AM IF1
5108
2115
AM IF2
2122
5107c
1 32
DISCR.
9101
B
2112 2120 2121
2113
1 2
1 2
TUNER BOARD / copper side view
3
2121
2112 2120
2113
B
9101
5107c
2122
DISCR.
1 32
5108
2115
AM IF2
5106
AM IF1
2104
16 17
A
2101
2102
2103
1 2
6-2
2123 A 2 3109 A 4 5104 B 2 5108 A 1 9101 B 2
3101 B 4 3110 A 4 5105 B 3 6101 A 1 9150 A 1
9151 B 3
3102 A 4 3113 B 1 5106 A 1 6102 A 1
5107a A 1 7101 A 2
3104 B 1 3114 A 4
3106 B 1 5101 A 2 5107b A 1 7102 A 4
3107 B 4 5102 B 4 5107c B 1 8100 A 1
3 4
C 2 1
C2
5101
FM-RF
C4
VARCO
C1 1
MW-RF 3114
2106
2105 FM-OSC.
C3
7102
MW-OSC.
2118 2117
2109
5105
3101
9151
MW-OSC
VCO
3107
2111
2110
black
FERRITE
ANTENNA
4 8 3 3 3
0001 1 7 7 - - 0 9 7 MW-RF 1102
5102
3 4
3 4
FERRITE
ANTENNA
MW-RF 1102
5102
2110
3101
3107
2111
VCO
9151
MW-OSC
2109
5105
2117
2118
7102
2105
VARCO
3114
2106
1
5101
3 4
TUNER ADJUSTMENT TABLE
Waverange Input Frequency
OSCILLATOR
87,35 MHz
1)
FM
87,5 - 108 MHz
108,25 MHz
512 kHz
1101
(525 kHz)
MW
A
525 - 1607 kHz
2)
(530 - 1710 kHz)
1635 kHz
(1720 kHz)
FM - RF
87,5 MHz
FM
B
87,5 - 108 MHz
108 MHz
VCO
B
Tuner EVA .4, 021097
FM
98 MHz
AM - IF
MW connect pin 24 of
IC 7101 (AM Osc)
with short wire to
ground
AM -RF
B
MW
repeat 1)
Check if capacitor 2109 stands upright before starting adjustments.
A
2)
for USA /17
3)
If sensitivity of frequency counter is too low adjust to max. channel separation
1101
(input signal: stereo left 90% + 9%, adjust output on right channel to minimum).
4)
RC-network serves for damping the IF-filter while adjusting the other one.
Tuner EVA .4, 021097
6-2
Input Set tuned to Adjust
lower
5104
band end
A
∆f = ±500kHz
upper
2106 C1
V = 100µV
band end
RF
lower
5105
C band end
∆f = ±30kHz
upper
V = 100µV 2106 C3
RF
band end
87,5 MHz 5101
A
∆f = ±500kHz
108 MHz 2106 C2
V = 10µV
RF
A
98 MHz 3101
continuous
wave
V = 1 mV
RF
IC 7101
10
100nF
5106
468 kHz
C
IC 7101
14
∆f = ±15kHz
100nF
V = 10mV 5108
RF
see
remark 4)
B
560 kHz 560 kHz 5102
(ferroceptor coil)
∆f = ±30kHz
1500 kHz 1500 kHz 2106 C4
V as low as
RF
possible
Measure on Scope / Counter
or
1 2
f
o
or
1 2
f
o
or
1 2
7101
pin 30
2k2
3
152 ±1 kHz 3)
V cc
or
1 2
f
o
symmetric
or
1 2
symmetric
Tuner Adj. EVA, 021097
CS 49 123