Sony STR-K700 Service Manual - Page 13

3-2. BLOCK DIAGRAM - DISPLAY/POWER SECTION - • R-CH is omitted due to same as L-CH. L • Signal Path : FM A MAIN SECTION SL (Page 12) C FL101 FLUORESCENT INDICATOR TUBE SBL F1 F2 14 29 42 31 SEG1-16 GRID1-12 STB CLK DIN 789 IC100 FL DRIVE IC101 BUFFER IC501 POWER AMP +V OUT2 12 8 IN2 NF2 9 Q501,502 LIMITER Q503 BOOSTER -V OUT2 11 IC601 POWER AMP +V OUT2 12 8 IN2 NF2 9 Q504 BOOSTER Q601,602 LIMITER Q603 BOOSTER Q505,506 CURRENT DETECT -V OUT2 11 IC701 POWER AMP +V OUT2 12 8 IN2 NF2 9 Q701,702 LIMITER Q604 BOOSTER Q703 BOOSTER Q605,606 CURRENT DETECT -V OUT2 11 +V OUT1 2 6 IN1 NF1 5 Q571,572 LIMITER Q704 BOOSTER Q754 BOOSTER Q705,706 CURRENT DETECT -V OUT1 3 Q753 BOOSTER Q755,756 CURRENT DETECT Q507 AF POWER PROTECT Q607 AF POWER PROTECT Q707 AF POWER PROTECT D883 Q881-883 PROTECT SWITCH D529 D729 59 60 47 FL_LAT FL_CLK FL_DATA A/D1 A/D0 X1 X0 82 83 X1101 24MHz 38 39 FUNCTION KEY S114-117 FUNCTION KEY S100,101,118,119 62 66 68 67 61 46 SYSTEM CONTROLLER IC1101(3/3) I/P_SEL(B) I/P_SEL(A) VOL_ENC(B) VOL_ENC(A) POWER KEY 32 31 31 ENCODER RV103 INPUT SELECTOR 65 64 56 31 ENCODER RV102 MASTER VOLUME S152 ?/1 HP RY FRONT RY REAR RY C/SB RY PROTECTOR VACS HP DETECT POWER RY 55 FUSE DETECT 63 SIRCS 54 AVCC 35 VCC3 84 VCC5 23 RSTX 77 STOP 48 58 Q509 RELAY DRIVE RY502 Q508 RELAY DRIVE RY501 R-CH R-CH TM600(1/2) L R J700 PHONES FRONT Q608 RELAY DRIVE RY601 R-CH TM601(1/2) L R SURROUND SPEAKERS IMPEDANCE USE 6-16Ω Q708 RELAY DRIVE RY701 TM600(2/2) TM601(2/2) CENTER SUB WOOFER POWER AMP +B Q860-862 +B SWITCH +3.3V +2.5V +5V IC1901 2 +3.3V REG 4 5 +2.5V REG IC1031 3 +5V REG 1 D804-807 T901 IC102 REMOTE 1 CONTROL RECEIVER IC850(1/2) IC850(2/2) 2 15 7 POWER AMP -B Q851,852 -B SWITCH D811 +B -B AUDIO +5V FL101 -20V Q801 -20V REG IC1001 3 +5V REG 1 RELAY +B AUDIO +7V AUDIO -7V TUNER +10V IC821 1 +7V REG 3 IC822 3 -7V REG 2 IC1902 3 +10V REG 1 +3.3V(STBY) IC1111 1 RESET 2 Q911 AC DET IC1904 3 +3.3V REG 1 R803 D920-923 F1 F2 D910-913 T902 D914 Q901 RELAY DRIVE D915 RY901 STR-K700 13 13 STR-K700 AC IN