Sony ICF-SW7600GR Service Manual - Page 9

4-1. BLOCK DIAGRAM SECTION 4 DIAGRAMS ICF-SW7600GR ANT101 (TELESCOPIC) FM TRACKING T101 CT101 FM ANT J101 AM EXT ANT (EXCEPT CH) Q120 ATT VT Q101 MUTING CONTROL MUTING ROD B BAR B S101 ATT OFF ON TO Q112-116 REG Q106 ATT RV101 ATT ANT102 (FERRITE-ROD) BPF Q105 ATT Q107 SW RF AMP Q116 LW/MW RF AMP Q112,113 Q114,115 ATT AGC AGC Q104 FM RF AMP FM TRACKING T102 CT102 FM RF VT 1ST IF T104 XF101 T105 AM MIX2 55.845MHz AM IFT1 + Q109,110 AM MIX Q111 1ST IF AMP Q108,121 AGC AGC Q119 1ST OSC AMP Q118 1ST OSC VT Q117 AM VCO AMP VCOL X301 75kHz S301 - 323 S325 - 328 KEY MATRIX HOLD S329 HOLD . FREE IC301 EEPROM 8 VDD SDA 5 SCK 6 BATT IC305 2 3.0V REG 3 IC303 2 3.5V DET 1 IC304 2 3.1V DET 1 IC302 DIGITAL TUNING SYSTEM CONTROL 25 XIN 24 XOUT 9 ı KS0-6 3 13 ı KR0-3 10 14 HOLD 56 SI/SO 55 SCK 35 LCD0-14 ı 49 31 COM0-3 ı 34 LIGHT 1 MUTING 2 BEEP 52 SD 53 METER 54 EO 19 23 VDD 51 VDET 50 CE VCOL 20 VCOH 21 AM/FM 16 BAR/ROD 17 POWER 15 LCD1 LIQUID CRYSTAL DISPLAY Q301 LED DRIVE D301(BACK LIGHT) MUTING BEEP SD METER Q303,306 VT PLL LPF Q302 CURRENT REG +13V VCOL Q304 FM VCO AMP VCOH Q305 AM/FM REG B+ SWITCH AM B ROD B BAR B VCOH MUTING Q205 BAND SWITCH AM REG Q206 FM VCO BUFFER 20 FMRF FEOUT 16 19 AMIN CF202 10.7MHz CF201 455kHz IC201 FM/AM FRONT-END IF,DET 13 FMIFIN FMIFOUT 11 CF203 10.7MHz 9 FMLIMIN DET 30 METER 2 14 AMIFIN CF205 DISCRI 10.7MHz SD-OUT 26 5 DISCRI SD-CTRL/AGC 1 15 BAND U/L 29 FMOSC AMOSC-I AMOSC-O CERALOCK SYNC/SSB VCO ENV/PSN 22 23 24 7 6 8 27 METER SD AGC RV202 JUST TUNE S202 SYNC LSB USB T202 FM VCO X201 CF204 AM OSC2 55.390MHz 3.64MHz CT201 RV201 VT CT202 SSB 0 BEAT SSB (EXCEPT FINE TUNE EA) Q207 AM/FM SWITCH AM REG REG 2ND LOCAL Q202 Q202 Q201 Q201 SWITCH SWITCH SWITCH SWITCH Q208 SWITCH Q203 MUTING S201 AM MODE AM REG - SSB SYNC NORM - Q101 MUTING CONTROL Q209 FM HIGH CUT Q210 AM HIGH CUT Q210 SWITCH FM REG AM REG Q211 MUTING MUTING MUTING RV203 76k(MPX) IC202 PLL FM MPX 1 IN L9 4 VCO R 10 NEWS STOP 8 MUSIC Q212 STEREO CONTROL S203 TONE BEEP RV204 VOLUMEw Q214 LINE AMP Q213 LINE AMP IC203 PRE/POWER AMP 1 IN2 L OUT2 7 16 IN1 R 4 NF2 OUT1 10 13 NF1 14 VOL VCC 9 MUTING Q217 AM/FM B+ SWITCH +13V Q219 AM/FM B+ SWITCH FM REG Q216 DC/DC CONVERTER Q220 AM/FM B+ SWITCH Q215 MUTING IC204 2 +3V REG 7 Q222,225 B+ SWITCH Q218 AM/FM B+ SWITCH AM REG Q221 AM/FM B+ SWITCH REG Q223 SWITCH J201 LINE OUT SP201 (SPEAKER) J202 (HEADPHONES) Q224 B+ SWITCH • Signal Path : FM : MW/LW • Abbreviation CH: Chinese model EA: Saudi Arabia model : SW BATT EXCEPT CH J203 DC IN 6V DRY BATTERY SIZE"AA" (IEC DESIGNATION R6) 4PCS,6V 9 9