CXA1538N

Baza Porad Serwisowych GND 30 PLL LPF2 29 MPX REG 28 FM VCO DISCRI MUTE 27 26 25 AM OSC 24 AFC 23 FM OSC 22 REG 21 FM/AM FM AM RF FM RF FE FE RF IN IN GND OUT 20 19 18 17 16 VCO MULTIPLEX REGULATOR REGULATOR FM FE AM FE CXA1538M/N/S M/ST SW 1/2 COUNTOR PD1 PD2 MUTING AUTO BLEND DECODE AMP BU AMP ST IND DC RIPPLE FILTER AMP DC AMP BU AMP DETUNE MUTING CONTROL FM IF/ DISCRI AM IF/DET TUNING IND 1 23 4 56 7 PLL PILOT PILOT ST IND Rch Lch Vcc LPF1 DET DET /VCO OUT OUTOSC LPF2 LPF2 CHECK 89 Ripple AGC FILTER AFC1 10 AGC AFC2 11 GND 12 TUNE IND 13 FM IF IN 14 15 AM BAND IF IN SELECT FM antenna AM BAR ANT FM RF L4 L3 L2 C4 C3 47p 18p FM OSC L1 C2 2p AM OSC C1 7p FM DISCRI UK£AD OBUDOWA CXA 1538M SOP 30 CXA 1538S SDIP 30 CXA 1538N SSOP 30 CXA 1238M SOP 30 CXA 1238S SDIP 30 - odpowiedniki ju¿ nie produkowane B.P.F. C6 C5 10µ 0.01µ C7 3p R1 100k C8 3.3µ CF3 RV 22k R9 100 C9 10µ R3 10k R4 2.2k 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 CXA1538M/S/N; CXA1238M/S R2 15 14 13 12 11 10 9 8 7 2.2k AM IFT R10 330 R8 2.2k CF1 CF2 455kHz 10.7MHz IFT 455kHz FM AM C20 0.01µ S1 D1 TUNING IND C19 0.01µ C18 C17 C16 4.7µ 1µ 33µ C15 100µ Vcc=3V 6 5 4 32 1 STEREO R5 D2 2.2k C12 1µ Rch OUT R6 C13 3.3k 0.022µ R7 C14 3.3k 0.022µ Lch OUT C11 4.7µ Rys.32. Schemat blokowy i aplikacyjny uk³adu scalonego CXA1538M/N/S. C10 - 0.47µ SERWIS ELEKTRONIKI ...