Sony STR-K7100 Service Manual - Page 21

5-8. BLOCK DIAGRAM - OUTPUT/POWER SECTION - L-CH R-CH R-CH PRE DRIVER IC701 IN 2 8 PRE DRIVE DRIVE +VOUT2 -VOUT2 12 11 -45V +B POWER AMP Q701-704 SL-CH SR-CH R-CH TUNER/ AUDIO C SECTION (Page 15) C-CH PRE DRIVER IC601 IN 2 8 PRE DRIVE DRIVE +VOUT2 -VOUT2 12 11 IN 2 8 PRE DRIVER IC501 PRE DRIVE DRIVE -45V +B +VOUT2 -VOUT2 12 11 SW-CH -45V +B POWER AMP Q651-654 POWER AMP Q501-504 PROTECTOR 12 D1110 PROTECTOR D721,722,732,733 Q722,723,725,793,795 -45V +B -B B-SWITCH Q691,692 FRONT_RY 25 D1107 C/REAR/SB_RY 24 SW_RY 22 SYSTEM CONTROL IC1907 (6/6) D1108 D1111 HP_RY 23 HP DETECT 8 VACS CTRL 119 FRONT B RY 17 BRIGEABLE RY 13 POWER_RY 9 FRT A RY C/SUR RY SW RY D1109 HP RY HP DETECT VACS CTRL FRT B RY IC691 2 OVERLOAD DETECT AMP 7 STOP 81 -20V TU+9V +7V -7V +A5V +5V +2.6V +3.3V +3.3V (STBY) +9V (STBY) CURRENT DETECT Q705,706 R-CH D729 OVERLOAD DETECT D740,Q740 R-CH R-CH R-CH R-CH CURRENT DETECT Q655,656 R-CH CURRENT DETECT Q505,506 OVERLOAD DETECT D640,Q640 R-CH OVERLOAD DETECT D540,Q540 D529 RELAY DRIVER Q790 RELAY DRIVER Q710 RY791 RY701 RELAY DRIVER Q611 RY710 RELAY DRIVER Q610 RY601 RELAY DRIVER Q612 RY610 RELAY DRIVER Q560 RY560 R-CH R-CH R-CH R-CH J790 PHONES TB001 (1/2) L FRONT A R TM602 L FRONT B R TB001 (2/2) SPEAKERS IMPEDANCE USE 6-16Ω L SURROUND R TM604 CENTER J309 AUDIO OUT SUB WOOFER T901 POWER TRANSFORMER (MAIN) • Signal path : TUNER (FM/AM) • R-ch is omitted due to same as L-ch. VACS CTRL HP RY FRT A RY C/SUR RY FRT B RY SW RY HP DETECT -20V REG Q801 IC1001 3 +5V REG 1 IC1901 5 2 +3.3V/+2.6V REG 4 RECT D802 IC1902 3 +9V REG 1 IC801 1 +7V REG 3 IC802 3 -7V REG 2 IC1031 3 +5V REG 1 +15V -15V IC1904 3 +3.3V REG 1 D1001 RELAY DRIVER Q809 RY801 TUNER/ D AUDIO SECTION R2 AC R2 AC R810 (Page 15) RECT D920-923 RELAY DRIVER Q901 RECT D805-808 F1 F2 -20V RY901 R811 F901 R910 D804 T902 POWER TRANSFORMER (SUB) AC IN DETECT Q921 RECT D910-913 D914 D915 AC IN ~ STR-K7100 STR-K7100 21 21