Marantz SR4000 Service Manual - Page 33

7D-3 7D-3 BLOCKDIAGRAM +FM 6 3 +B AGC A 1102 1 Ant1 Fa 4 GND f0 = fin + fif MT VT MT 5 AM-RF 5102 MW 5103 LW 2106 B FM FRONTEND IF Out 7 Fif 10,7 MHz Fo Osc Out 8 AM-OSC 10,7MHz 6 C VCC1 VDD 7 VCC1 23 VDD 10,7MHz IF-AM 35 FM-IF2 34 V Stab B 33 38 FM-IF2I V Stab A 450kHz 5111 40 AM-MIX Out IF-AM 450kHz 5112 41 AM-IF1 In 36 AM-IF2 STABILIZER 37 FM-IF1I In 5 FM Osc. 8 I-Tune 2 AM-RF FM FM IF1 IF2 CHARGE PUMP AM FRONTEND AM OSC. AM MIXER AM IF FM DET Ripple 1 AM-Osc. 6 FM GND RF GND IF GND Dig. GND RF GND 3 4 17 26 42 FM-Demod 18 10,7MHz AM-DET 2 1 450kHz 5114 32 AM-AFC 19 AFC- 20 AFC+ AFC TEA5762 AM DET CONTROL VCC2 22 VCC2 WRITE Enable 29 DATA 28 CLOCK 27 P1 31 FM/AM 39 P0 30 Mono/ Stereo 24 Left 14 AGC AGC 44 XTAL OSC Fieldstrength AF-Out Indc. 10 21 25 STEREO DECODER Mute 13 Right 15 MPX-In VC0 11 9 PILOT 16 Filter LPF 12 75kHz 5123 MW 3142 7 5122 LW ANTI BIRDY FILTER VC0 RDS +FM VCC1 VDD VCC2 RDS 1121 1 GND 2 RDS 3 ENABLE 4 DATA 5 CLOCK 6 STEREO 3 4 1124 1 LEFT 2 GND 3 RIGHT 4 VCC MW/LW-SELECTION