Philips FR996 Service Manual page 33

PAINEL TUNER ECO5
CONTEÚDO
Diagrama em blocos........................................................��
Tabela de ajustes.............................................................��
Guia de placa - componentes........................................��
Esquema elétrico.............................................................��
DIAGRAMA EM BLOCOS
PAINEL TUNER
ECO 5
V A
Stab
FM-RF
1101 V
Loop
(1102)
10,7 MHz
A FM 3 39 37
43 FM FM
frontend Mixer
FM-Osc.
FM Pre-
5
V
Osc.
scaler
Loop
AM-Osc.
AM
6
V
AM-FRAME AERIAL Osc.
Loop
1103
AM-RF
2 AM IF
AM AM
Frontend Mixer
C
V
Loop
B 1
Charge
8
V
pump
Loop
38
V A
Stab
34
V B
Stab
23 7 22 40 41
Vdd Vcc1 Vcc2
450kHz
V A V
Stab
buffer ampl.
V B
Stab
Discriminator
5
RDS
(MPX)
VCO
LF filter
10,7 MHz 10,7 MHz
35 33 18 10 11 9
right
FM Stereo left
IF1 IF2
Det. Decoder
stereo
RADIO IC
TEA 5757T
Multi-
plexer
clock
data
enable
AM
CONTROL
Det.
AGC
P1
programmable
P0
output ports
AFC
Reference
Oscillator
36 44 32 19 20 25
75kHz
450kHz 450kHz
2
B V B
Stab Stab
FR996 /19 33
Vcc1
Vdd
Vcc2
1124
Vcc
4
4
right
15
4
14
left
1
Version
24
3
1126 1121
stereo
4 6
27 clock
28 data
29 enable
1
RDS
(MPX)
1
31
30
MW/LW
AM-RF,
AM-Osc.
ECO5 sys., 240698