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7A-1 7A-1 BLOCK DIAGRAM TUNER BOARD ECO 6 Systems VStabA VStabB FM-IF 1 FM-IF 2 10,7 MHz 10,7 MHz Vcc1 MPX buffer ampl. 5 Vdd Discriminator FM-RF RDS (MPX) VLoop 1101 (1102) LF filter 10,7 MHz Vcc2 VCO 1120 D A 3 FM 39 37 33 35 18 10 11 4 left 9 1 left 14 43 FM Mixer FM Frontend FM-Osc. FM Osc. 5 VLoop Prescaler Multiplexer AM-Osc. AM-FRAME AERIAL 1103 AM-RF 2 Stereo Decoder Vcc 24 RADIO IC TEA 5757H AM IF AM Mixer AM Frontend 4 right right 15 stereo Version AM Osc. 6 VLoop FM Det. IF2 IF1 AM Det. CONTROL RDS (MPX) enable 29 enable data 28 data clock 27 clock stereo 8 AGC 1 VLoop VStabA VStabB 8 P1 31 programmable output ports Charge pump 38 34 AFC 23 7 22 40 41 36 44 32 19 AM-IF 1 AM-IF 2 AM-AFC 450kHz 450kHz 450kHz VStabA VStabB VStabB 3 P0 30 Reference Oscillator Stabilizer AFC + B C AFC - VLoop 20 25 75kHz Vdd Vcc1 Vcc2 2 ECO6 Systems, 140499 ECO6 Tuner Board version: SYSTEMS non-CENELEC TABLE OF CONTENTS Blockdiagram ..................................................................7A-1 Schematic Diagram .........................................................7A-2 Component Layout..........................................................7A-3 Adjustment table .............................................................7A-3 Electrical Partslist ............................................................7A-4
