Denon AVR-1804 Service Manual
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1616AVR-1804/884 / AVC-1880MM74HC4053MX (IC1001, 1004, 1008)12VEE345678 910111615141312Y1Y0Z1ZZ0EnableGNDVccYX1XX0CABX = Don’t CareX = Don’t CareTruth TableControl InputsSelectEnable C B A ONSwitchesL L L L Z0 Y0 X0L L L H Z0 Y0 X1L L H L Z0 Y1 X0L L H H Z0 Y1 X1L H L L Z1 Y0 X0L H L H Z1 Y0 X1L H H L Z1 Y1 X0L H H H Z1 Y1 X1H X X X NoneTruth TableKIC9459F (IC706)BU4052BCF(IC601D,602D)Y0Y2COMMON YY3Y1INHVEEVssVDDX2X1COMMON XX0X3AB12345678161514131211109BX2X1XOUT/INX0X3AY2YOUT/INY3Y1INHVEEY0L-LD28 L-ch7 to 91decoderR-ch latch circuitR-ch7 to 91decoder9 1619324567101112242223212018171514131NCL-OUTL-INL-LD1L-A-GNDNCNCGNDCKVSS VDDNCR-OUTR-LD1R-LD2R-A-GNDNCCS2NCSTBDATAR-IN50kohm/91STEPVRSame as L-chL-ch latch circuitShift register (24Bit)Level shift circuitCS1INH B ON SwitchesAX0 Y0X1 Y1X2 Y2X3 Y3LLLHHLHHX NONEXLLLLHMM74HCT244 (IC812)20119218317416515614713812911101G2G1A 02A 02A 32Y 0 1Y 01Y 31A 12Y 11A 22Y 21Y 12A 11Y 22A 21A 32Y 3GNDV CCBA7625 (IC605D)BA7626 (IC603D, 604D, 651-654,1000,1002)78161514131211109Monitor OUTGNDIN5GNDIN4CTL EIN3CTL DIN1CTL AV OUT1VccIN2CTL BV OUT2CTL C6dB6dBLOGICLOGICNote 1: * mark means thatfeasible for either H or L.Note 2: Each input terminal isprovided with sink chipclamp (BA7625).Each input terminal takes20kohm at the end (BA7626).C D E V OUT 2L L * IN 1H L * L H * IN 3H H L IN 4H H H IN 5C D E V OUT 1L L * H L * IN 2L H * IN 3H H L IN 4H H H IN 5A B E MONITOR OUTL L * IN 1H L * IN 2L H * IN 3H H L IN 4H H H IN 5TC9184AP (IC552)234561 16 7 8 9 101514131211BASS+BASS-COMTREBLE-TREBLE+VssVDDGNDCKDATASTBBASS+BASS-COMTREBLE-TREBLE+Ladder resisterAnalog switch13 bit latch circuitLevel shift20 bit Shift register circuitAnalog switchLadder resisterLadder resisterAnalog switch13 bit latch circuitCodedetectcircuitAnalog switchLadder resister |
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