Tuner Board - Philips FW-R8/17 Service Manual

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BLOCK DIAGRAM TUNER ECO5

TUNER BOARD

ECO 5
1101
(1102)
A FM
FM-Osc.
V
Loop
AM-Osc.
V
AM-FRAME AERIAL
Loop
1103
AM-RF
V
Loop
B
V
Loop
V A
Stab
V B
Stab
7B-3
systems
V A
Stab
FM-RF
V
Loop
10,7 MHz
3 39 37 35
43 FM
FM
IF1
frontend Mixer
FM
5 Pre-
Osc.
scaler
Multi-
plexer
AM
6
Osc.
2
AM IF
AM AM
Frontend Mixer
C
1
8 Charge
pump
38
34
23 7 22 40 41 36
Vdd Vcc1 Vcc2
450kHz 450kHz
V A V B
Stab Stab
buffer ampl.
V B
Stab
Discriminator
5
RDS
(MPX)
VCO
LF filter
10,7 MHz 10,7 MHz
33 18 10 11
FM Stereo
IF2
Decoder
Det.
RADIO IC
TEA 5757T
AM
CONTROL
Det.
AGC
programmable
output ports
AFC
Reference
Oscillator
44 32 19 20
450kHz
2
V B
Stab
Digitized in Heiloo Netherlands
7B-3
Vcc1
Vdd
Vcc2
1124
Vcc
4
4
right
9
15
right
4
14
left left
1
stereo
Version
24
3
1126 1121
stereo
4 6
clock
27 clock
data
28 data
enable
29 enable
1
RDS
(MPX)
1
31
P1
30
P0
MW/LW
25
AM-RF,
AM-Osc.
75kHz
ECO5 sys., 240698
2/4/2018