Philips FW-C870/19 Service Manual page 29

PAINEL TUNER ECO5
DIAGRAMA EM BLOCOS
PAINEL TUNER
SISTEMA ECO 5
FM-RF
V
1101
Loop
(1102)
A 3
FM
43
FM
Mixer
frontend
FM-Osc.
5
V
Osc.
Loop
AM-Osc.
AM
6
V
AM-FRAME AERIAL
Osc.
Loop
1103
AM-RF
2
AM AM
Mixer
Frontend
C
V
Loop
B 1
8 Charge
V
pump
Loop
38
V A
Stab
34
V B
Stab
23 7
Vdd Vcc1
buffer ampl.
V A V B
Stab Stab
Discriminator
5
RDS
(MPX)
LF filter
10,7 MHz 10,7 MHz 10,7 MHz
39 37 35 33 18 10 11
FM FM
IF2
IF1
Det.
RADIO IC
FM
Pre-
scaler TEA 5757T
Multi-
plexer
AM IF AM
Det.
AGC
AFC
22 40 41 36 44 32 19 20
Vcc2
450kHz 450kHz 450kHz
2
V A V B V B
Stab Stab Stab
Vcc1
Vdd
Vcc2
VCO 1124
Vcc
4
4
right
9
15
right
4
Stereo 14
left left
1
Decoder
stereo
Version
24
3
1126 1121
stereo
4 6
clock
27 clock
data
28 data
enable
29 enable
CONTROL
1
RDS
(MPX)
1
31
P1
programmable
30
P0
output ports
Reference
MW/LW
Oscillator
25
AM-RF,
AM-Osc.
75kHz
ECO5 sys., 240698