Philips FR975 Service Manual page 37

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BLOCKDIAGRAM
+FM
6 3
+B AGC
A
1102
1 Ant1
F
a
4 GND
f = f + f
0 in if
MT
MT
AM-RF
5102
MW
2106
5103
LW
B
7A-3
VCC1
7
VCC1
FM FRONTEND
STABILIZER
10,7MHz
IF Out 7 37 FM-IF1I In
F 10,7 MHz
if 5 FM Osc.
F o
Osc Out 8
6
VT
5
8 I-Tune
2 AM-RF
C
AM-OSC
5123
MW
5122
LW
MW/LW-SELECTION
07/08/2012
IF-AM IF-AM
10,7MHz
450kHz 450kHz
VDD
5111 5112
23 35 34 33 38 40 41 36
VDD FM-IF2 V Stab B FM-IF2I V Stab A AM-MIX Out AM-IF1 In AM-IF2
FM FM
IF1 IF2
CHARGE
PUMP
AM FM
FRONTEND DET
AM
MIXER
AM
OSC.
Ripple AM-Osc. FM GND RF GND IF GND Dig. GND RF GND FM-Demod
1 6 3 4 17 26 42 18
10,7MHz
7A-3
AM-DET
2 1
450kHz
VCC2
5114
TEA5762
32 19 20 22
AM-AFC AFC- AFC+ VCC2
WRITE Enable
AFC
CLOCK
AM AM
IF DET
FM/AM
CONTROL
STEREO
DECODER
XTAL
AGC
OSC
Fieldstrength
AGC AF-Out Indc. MPX-In VC0 LPF
44 10 21 25 11 9 12
75kHz
3142
7
ANTI BIRDY FILTER
VC0
RDS
World of Free Manuals
1121
1
GND
2
RDS
RDS
29
3
ENABLE
28
DATA 4
DATA
27
5
CLOCK
31
P1 6
STEREO
39
3
30
P0
Mono/
4
Stereo 24
1124
Left
14
1
LEFT
Mute 13
2
GND
Right
15
3
RIGHT
PILOT 16
Filter
+FM
4
VCC
VCC1
VDD
VCC2
PCS 69 715