7B-1 7B-17B-1
BLOCKDIAGRAM
TUNER BOARD
ECO 5 systems
buffer ampl.
VAVBVcc1
StabStab
Discriminator
5Vdd
RDSVcc2
FM-RF
(MPX)
1101V
LoopVCO1124
(1102)10,7 MHz10,7 MHz10,7 MHzLF filterVcc
4
4right
AFM3393735331810119
right15
43FMFMFMStereoleft 14left4
IF1IF2Decoder1
frontendMixerDet.
stereo
FM-Osc.24Version
5FMPre-RADIO IC3
V
LoopOsc.scaler
TEA 5757T
11261121
Multi-stereo
46
AM-Osc.plexerclock
27clock
6AM
AM-FRAME AERIALV
LoopOsc.data28data
1103
AM-RFenable
2AMAMAM IFAM29enable
CONTROL1
FrontendMixerDet.
RDS
(MPX)
C
V1
Loop
AGCP131
TUNER BOARD ECO5programmable
output portsP030
B1
8Charge
V
Looppump
38
VAAFCReference
StabMW/LW
34Oscillator
VB
Stab
2372240413644 3219AFC -AFC +2025
TABLE OF CONTENTSAM-RF,
AM-Osc.
Blockdiagram ......................................................... 7B-1
Vdd Vcc1 Vcc275kHz
Component layout ................................................... 7B-2
450kHz450kHz450kHz
Adjustmanttable ...................................................... 7B-2
2
Circuit diagram ........................................................ 7B-3
Partslist .................................................................... 7B-4VAVBVB
StabStabStab
ECO5 sys., 240698
CS52 930 |