Sony STR-K1600 Service Manual - Page 20

STR-K1600 Ver. 1.1 5-6. BLOCK DIAGRAM - POWER SECTION - L-CH R-CH R-CH SL-CH SR-CH R-CH TUNER/ AUDIO C SECTION (Page 15) C-CH PRE DRIVER IC701 IN 2 8 PRE DRIVE DRIVE +VOUT2 -VOUT2 12 11 IN 2 8 -45V +B PRE DRIVER IC601 PRE DRIVE DRIVE +VOUT2 -VOUT2 12 11 IN 2 8 PRE DRIVER IC501 PRE DRIVE DRIVE -45V +B +VOUT2 -VOUT2 12 11 POWER AMP Q701-704 POWER AMP Q651-654 POWER AMP Q501-504 SBL-CH SW-CH IN 1 6 PRE DRIVE DRIVE +VOUT1 -VOUT1 2 3 -45V +B POWER AMP Q533,534 571,572 PROTECTOR 61 D1110 PROTECTOR D721,722,732,733 Q723,725,793,795 FRONT_A_RY 66 C/REAR/SB_RY 69 SW_RY 70 SYSTEM CONTROL IC1101 (6/6) HP_RY 62 HP DETECT 55 VACS CTRL 45 D1107 D1108 FRT A RY C/SUR RY SW RY D1111 HP RY HP DETECT VACS CTRL -45V +B -B B-SWITCH Q691,692 IC691 2 OVERLOAD DETECT AMP 7 POWER_RY 58 STOP 48 R-CH CURRENT DETECT Q705,706 R-CH D729 OVERLOAD DETECT D740,Q740 R-CH R-CH RELAY DRIVER Q790 RELAY DRIVER Q710 RY791 RY701 R-CH R-CH J790 PHONES TB001 (1/2) L FRONT R TB001 (2/2) R-CH CURRENT DETECT Q655,656 R-CH OVERLOAD DETECT D640,Q640 R-CH CURRENT DETECT Q505,506 OVERLOAD DETECT D540,Q540 CURRENT DETECT Q535,536 OVERLOAD DETECT D580,Q580 -20V TU+9V +7V -7V +A5V +5V +1.8V +3.3V -20V REG Q801 IC1001 3 +5V REG 1 IC1903 5 2 +3.3V/+1.8V REG 4 +3.3V (STBY) +9V (STBY) IC1904 3 +3.3V REG 1 RELAY DRIVER Q610 RY601 R-CH L SPEAKERS SURROUND IMPEDANCE USE 6-16Ω R D529 RELAY DRIVER Q612 RY610 TM603 CENTER SURROUND BACK • Signal path : TUNER (FM/AM) • R-ch is omitted due to same as L-ch. • Abbreviation E51 : Chilean and Peruvian models MX : Mexican model RELAY DRIVER Q560 RY560 J408 AUDIO OUT SUB WOOFER T901 POWER TRANSFORMER (MAIN) VACS CTRL HP RY FRT A RY C/SUR RY SW RY HP DETECT IC1902 3 +9V REG 1 IC801 1 +7V REG 3 +15V RECT D802 3 -7V REG 2 IC802 -15V IC1031 3 +5V REG 1 D1001 TUNER/ D AUDIO SECTION R2 AC R2 AC R810 (Page 15) RECT D920-923 RECT D805-808 R811 R910 RELAY DRIVER Q901 F1 F2 -20V RY901 RECT D910-913 D804 EXCEPT E51 MODEL T902 POWER TRANSFORMER (SUB) AC IN DETECT Q921 D914 D915 F901 JW903 E51 MODEL S901 VOLTAGE SELECTOR 120V JW900 220V 240V S901 -3 -2 -1 JW795 MX MODEL JW906 EXCEPT E51,MX MODEL AC IN ~ JW905 STR-K1600 20 20