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STR-DA1ES/DB780 5-3. BLOCK DIAGRAM – AUDIO CONTROL Section – J111 FRONT SURROUND L 27 6.1L L LOUT 24 LINE AMP IC421 20 VRIN OUT TRIM TRIM 40 6.1C 28 2CHL L, SL, C, W L COUT 37 25 D/AL LINE AMP IC621 (2/2) 20 13 CLK 2CHL DATA 16 E G (Page 16) H (Page 16) J (Page 16) LAT ELECTRICAL VOLUME IC401 17 LAT DATA 32 6.1SW 3 6.1SB 2 (SW) SUB WOOFER (Page 14) L OUT BUFFER IC402 VRIN OUT TRIM MUTING Q451 TRIM C 38 D/AC SWOUT 29 MUTING Q601 W LINE AMP IC621 (1/2) 9 VRIN OUT TRIM TRIM 30 D/ASW 23 26 16 CLK DATA 13 C OUT 6 5 BUFFER IC602 (1/2) SL OUT 4 (DA1ES) J449 L LAT ELECTRICAL VOLUME IC601 FRONT RY449 R R-CH 17 L LAT CLK DATA 34 D/ASL MUTING Q501 BUFFER IC602 (2/2) 25 LEVEL SHIFT CIRCUIT MUTING Q701 SL 25 LEVEL SHIFT CIRCUIT CLK CENTER C 26 36 6.1SL MULTI CH IN (Page 14) 23 SURROUND SR-CH RY549 R PRE OUT MUTING CONTROL SWITCH Q813 SLOUT 33 LINE AMP IC521 20 VRIN OUT TRIM 23 26 BUFFER IC502 J699 AUDIO SELECTOR IC111 LAT CLK 13 SUB WOOFER ELECTRICAL VOLUME IC501 RY807 RY699 17 LAT DATA 16 CLK DATA LEVEL SHIFT CIRCUIT CENTER 25 RELAY DRIVE Q826 • R-CH is omitted due to same as L-CH. • SIGNAL PATH : TUNER : AUDIO IN (ANALOG) PRE RY K (Page 16) L (Page 17) M (Page 17) DATA CLK LAT F DATA, CLK, LAT 22 21 23 DATA CLK LAT (Page 14) TRIM S MUTE DATA, CLK, LAT 15 15
