Kenwood VR 3080 Service Manual - Page 10

KRF-V7772D/VR-3080 CIRCUIT DESCRIPTION 4-3 Circuit control (a) Selector IC NJU7313AL(X09:IC4), NJU7312AL (X09:IC5) NJU7313AL NJU7312AL *3 (1:H , 0:L) PIN No.(Lch) 2 3 4 5 7 8 10 1 1 2 3 4 6 7 8 10 11 PIN No.(Rch) 27 26 25 24 22 21 19 18 27 26 25 23 22 21 19 18 SW No. (Lch) L1 L2 L3 L4 L5 L6 L8 L9 L1 L2 L3 L4 L5 L6 L7 L8 SW No. (Rch) R1 R2 R3 R4 R5 R6 R7 R8 R1 R2 R3 R4 R5 R6 R7 R8 *1 TUNER 1 00 0 00 11 1 00 000 CD1 0 00 0 10 11 1 00 000 MD/ T A PE1 0 00 1 00 01 1 00 000 VIDEO1 0 00 0 00 11 0 01 000 VIDEO2 0 00 0 00 11 1 00 100 VIDEO3 0 00 0 00 11 1 00 010 VIDEO4 0 00 0 00 11 1 00 001 A V AUX 0 00 0 00 11 1 10 000 PHONO 0 10 0 00 11 1 00 000 CD2 /T A PE2 o f f 01 CD2 /T A PE2 on 10 *2 0 01 0 00 00 11 1 00 000 *1: ANALOG INPUT or DIGITAL INPUT with except STEREO mode *2: DIGITAL INPUT with STEREO mode *3: CD2/TAPE2 MONITOR is set CD2 position and L2,R2(REC OUT of CD2/TAPE2) of NJU7312AL is always used by '0'. (b) Selector IC TC9162A F(X08:IC15) PIN No.(L ch) PIN No.(R ch) SW No. (L.R ch) TONE on TONE o f f SPEAKERS B on SPEAKERS B o f f ANALOG THROUGH D/ A OU T (LOW BOOS T on *1) D/ A OU T (LOW BOOS T o f f) *1: SW of f 2 27 L1,R1 1 0 3 26 L2,R2 0 1 5 24 L3,R3 1 0 6 23 L4,R4 0 1 (c) DSP:YSS912 (X08:IC51)OUTPUT PORT :OPORT0~7 (VIDEO SELECTOR, DIGITAL/ANALOG INPUT DISTINCTION) PIN No. 32 33 34 35 36 P0 P1 P2 P3 P4 VIDEO1 0 0 0 0 0 VIDEO2 1 0 1 0 0 VIDEO3 1 1 1 1 0 VIDEO4 0 1 0 1 0 A V AUX 1 1 1 1 1 DIGI TAL IN ANALOG IN 8 21 L5,R5 1 0 0 37 P5 0 1 9 20 L6,R6 (1:H , 0:L) 11 18 L7,R7 0 0 1 0 0 1 (1:H , 0:L) 38 39 P6 P7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10