Yamaha-RXA-3020-Service-Manual-Part-3电路原理图.pdf
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1、Pin No. Related Power Supply Port NameFunction NameONOFFDetail of Function I/OLogicI/OLogic 163 IIO0_0/TXD7/AN15_0/ P15_0 HRX1_N_MTHDMI_PONIL actOLowMute from HDMI RX1 (for HAU_N_INT distinction) 164 VCCVCC- 165 KI3/AN_7/P10_7+3.3S_PON+3.3S_PONOH actOLow+3.3S power supply 166 KI2/AN_6/P10_6AD2_COM+3
2、.3S_PONIA/DOLowAD selector 2 COM input 167 KI1/AN_5/P10_5AD1_COM+3.3S_PONIA/DOLowAD selector 1 COM input 168 KI0/AN_4/P10_4HRX2_N_MTHDMI_PONIL actOLowMute from HDMI RX2 (for HAU_N_INT distinction) 169 AN_3/P10_3KY_AD3ACIA/DOLowKey 3 170 AN_2/P10_2KY_AD2ACIA/DOLowKey 2 171 AN_1/P10_1KY_AD1ACIA/DOLowK
3、ey 1 172 AVSSAVSS- 173 AN_0/P10_0 HDR_N_RSTPRYOL actOLowHD Radio reset (U model) TUN_N_RSTPRYOL actOLowTuner reset (C, R, T, K, A, B, G, F, L, S, J models) 174 VREFVREF- 175 AVCCAVCC- 176 STXD4/SCL4/RXD4/ ADTRG/P9_7 HDR_MISOPRYIDataOLowHD Radio reception data (U model) TUN_SCLPRYODataOLowTuner I2C c
4、lock (C, R, T, K, A, B, G, F, L, S, J models) 0 + 0.82 k+ 0.82 k+ 1.0 k+ 1.5 k+ 1.5 k+ 1.8 k+ 2.7 k Detected voltage value at 171 pin 0 0.125 V 0.125 0.358 V 0.358 0.577 V 0.577 0.828 V 0.828 1.078 V 1.078 1.299 V 1.299 1.535 V 1.535 1.777 V A/D value (3.3 V=255) 0 910 2728 4445 6364 8384 100101 118
5、119 137 KEY1 SCENE 4 SCENE 3 SCENE 2 SCENE 1 ZONE 2 ON/OFF ZONE 3 ON/OFF ZONE 4 ON/OFF MAIN ZONE 0 + 0.82 k+ 0.82 k+ 1.0 k+ 1.5 k+ 1.5 k+ 1.8 k+ 2.7 k+ 3.3 k+ 4.7 k Detected voltage value at 169 pin 0 0.125 V 0.125 0.358 V 0.358 0.577 V 0.577 0.828 V 0.828 1.078 V 1.078 1.299 V 1.299 1.535 V 1.535 1
6、.777 V 1.777 2.010 V 2.010 2.241 V A/D value (3.3 V=255) 0 910 2728 4445 6364 8384 100101 118119 137138 155156 173 KEY3 PRESETPRESET MEMORYINFO ZONE CONTROL FMAM TUNING/CHTUNING/CHPURE DIRECT 0 + 0.82 k+ 0.82 k+ 1.0 k+ 1.5 k+ 1.5 k+ 1.8 k+ 2.7 k+ 3.3 k+ 4.7 k+ 6.8 k+ 12.0 k+ 22.0 k Detected voltage
7、value at 170 pin 0 0.125 V 0.125 0.358 V 0.358 0.577 V 0.577 0.828 V 0.828 1.078 V 1.078 1.299 V 1.299 1.535 V 1.535 1.777 V 1.777 2.010 V 2.010 2.241 V 2.241 2.476 V 2.476 2.709 V 2.709 2.940 V A/D value (3.3 V=255) 0 910 2728 4445 6364-8384 100101 118119 137138 155156 173174 191192 209210 227 KEY2
8、STRAIGHT TONE/ BALANCE OPTIONON SCREENENTER PROGRAMPROGRAM DISPLAYRETURN A/D value (3.3 V=255) 0 1213 3940 6768 9293 115116 140141 169199 221222 244 DestinationJUCR, STKAB, G, FL Key detection for A/D port Key input (A/D) pull-up resistance 10 k-ohms Destination detection for AD port Pull-up resista
9、nce 10 k-ohms 101 RX-A3020/RX-V3073 RX-A3020/RX-V3073 Microprocessor extended port IC70, 71: TC74VHC273FT (EL,K) (DIGITAL P.C.B.) Octal D-type flip-flop with clear IC70 IC71 Pin No. R32CRelated Power Supply externalFunction NameONOFFDetail of Function bus dataI/OLogicI/OLogic 2D8HDMI_PONHDMI_PONOH a
10、ctOLowHDMI power supply (Necessary for DSP, A-VIDEO drive) 5D9HRX1_N_RSTHDMI_PONOL actOLowHDMI receiver reset 6D10HTX1_N_RSTHDMI_PONOL actOLowHDMI transmitter reset 9D11HTX2_N_RSTHDMI_PONOL actOLowHDMI transmitter 2 reset 12 D12CEC_ENHDMI_PONOH actOLowCEC function ON/OFF of HDMI transmitter 2 15 D13
11、HTX_AUSELHDMI_PONOH HRXOLowHDMI transmitter sound select 16 D14HAU_N_OEHDMI_PONOL actOLowHDMI to DIR sound output enable 19 D15ZTX_AUSEL2ACOLowOLowSwitching of the HDMI sound and except HDMI Pin No. R32CRelated Power Supply externalFunction NameONOFFDetail of Function bus dataI/OLogicI/OLogic 2D0HSW
12、_N_RSTHDMI_PONOL actOLowHDMI switcher reset (L period: More than 5ms) 5D1VDEC_N_RSTVID_PONOL actOLowVideo decoder reset 6D2WIFI_PONWIFI_PONOH actOLowWiFi adaptor power supply control (spare) 9D3HRX_VSELHDMI_PONOL DECOLowVideo decoder to scaler route enable 12 D4F_HEQ_CEHDMI_PONOH actOLowFront HDMI +
13、 3.3HF power supply: Interlocking movement with HDMI_PON 15 D5VID_PONVID_PONOH actOLowVideo power supply 16 D6+3.3D_PON+3.3D_PONOH actOLowOR of HDMI_PON, DSP_PON, NET_USB_PON 19 D7PRYPRYOH actOLowPower relay 1CLR Q1 Q2 Q3 Q4 GND D1 D2 D3 D4 2 3 4 5 6 7 8 9 10 20VCC Q8 Q7 Q6 Q5 CK D8 D7 D6 D5 19 18 1
14、7 16 15 14 13 12 11 DCKCLR L H H H XX L H X Q L L H Qn InputsOutput Function Clear No Change 1 11 3 2 DR CKQ D1 Q1 CLR CK 4 5 DR CKQ D2 Q2 7 6 DR CKQ D3 Q3 8 9 DR CKQ D4 Q4 13 12 DR CKQ D5 Q5 14 15 DR CKQ D6 Q6 17 16 DR CKQ D7 Q7 18 19 DR CKQ D8 Q8 102 RX-A3020/RX-V3073 RX-A3020/RX-V3073 IC72, 73: T
15、C74VHC273FT (EL,K) (DIGITAL P.C.B.) Octal D-type flip-flop with clear IC72 IC73 Pin No. R32CRelated Power Supply externalFunction NameONOFFDetail of Function bus dataI/OLogicI/OLogic 2D8MONO_Z2PRYOH actOLowZONE 2 stereo/mono output switch 5D9MONO_Z3PRYOH actOLowZONE 3 stereo/mono output switch 6D10E
16、X2_N_RSTACOL actOLowReset of expansion IO2 9D11EX2_N_CSACOH actOLowChip select of expansion IO2 12 D12DAC_N_CS_SWDSP_PONOL actOLowDAC chip select SW 15 D13DAC_N_CS_FPDSP_PONOL actOLowDAC chip select Front Presence 16 D14DAC_N_RST_SB_FPDSP_PONOL actOLowDAC reset Surround Back/Front Presence 19 D15DAC
17、_MUTE_RPDSP_PONOH actOLowDAC mute Rear Presence Pin No. R32CRelated Power Supply externalFunction NameONOFFDetail of Function bus dataI/OLogicI/OLogic 2D0SCR_N_RSTHDMI_PONOL actOLowReset of scaler (VHD1900) 5D1SpareACOLowOLowSpare (for power supply control of VIDEO P.C.B.) (VID_PON2) 6D2FLP_PONFLD_P
18、ONOH actOLowFL driver VH and filament power supply control 9D3DAC_N_RSTDSP_PONOL actOLowDAC reset C/SR/SW 12 D4DAC_N_RST_FDSP_PONOL actOLowDAC reset Front 15 D5VID_PONVID_PONOH actOLowVideo power control 16 D6DSP2_N_RSTDSP_PONOL actOLowReset of DSP2 19 D7VOL3_CSPRY/OL actOLowVOL3 (NJU7313AM) chip se
19、lect DSP_PON 1CLR Q1 Q2 Q3 Q4 GND D1 D2 D3 D4 2 3 4 5 6 7 8 9 10 20VCC Q8 Q7 Q6 Q5 CK D8 D7 D6 D5 19 18 17 16 15 14 13 12 11 DCKCLR L H H H XX L H X Q L L H Qn InputsOutput Function Clear No Change 1 11 3 2 DR CKQ D1 Q1 CLR CK 4 5 DR CKQ D2 Q2 7 6 DR CKQ D3 Q3 8 9 DR CKQ D4 Q4 13 12 DR CKQ D5 Q5 14
20、15 DR CKQ D6 Q6 17 16 DR CKQ D7 Q7 18 19 DR CKQ D8 Q8 103 RX-A3020/RX-V3073 RX-A3020/RX-V3073 IC76, 77: SN74LV4051APWR (DIGITAL P.C.B.) 8-channel analog multiplexers/demultiplexers IC76 (AD2) IC77 (AD1) Pin No. Related Power Supply Port NameFunction NameONOFFDetail of Function I/OLogicI/OLogic AD se
21、lector 2 (AD2_COM signal is input into AN_6 of R32C) 1Y4THM2+3.3S_PONIA/DI-Temperature detection 2 2Y6THM3+3.3S_PONIA/DI-Temperature detection 3 4Y7THM4+3.3S_PONIA/DI-Temperature detection 4 5Y5DEST+3.3S_PONIA/DI-Destination distinction 12 Y3MODEL+3.3S_PONIA/DI-Model distinction 13 Y0Space+3.3S_PONI
22、A/DI- 14 Y1USB_VBUS_PRT +3.3S_PONIA/DI-Front USB overcurrent detection 15 Y2Space+3.3S_PONIA/DI- Pin No. Related Power Supply Port NameFunction NameONOFFDetail of Function I/OLogicI/OLogic AD selector 1 (AD1_COM signal is input into AN_5 of R32C) 1Y4PS2_PRT+3.3S_PONIA/DI-Power supply protection 2 2Y
23、6PS1_PRT+3.3S_PONIA/DI-Power supply protection 1 4Y7AMP_OLVPRYIA/DI-Amplifier output level detection 5Y5DC_PRTPRYIA/DI-DC protection 12 Y3THM1+3.3S_PONIA/DI-Temperature detection 1 13 Y0PS3_PRTACIA/DI-Power supply protection 3 14 Y1L3_DETVID_PONIA/DI-D terminal L3 detection 15 Y2MODE+3.3S_PONIA/DI-S
24、pecial mode distinction Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 COM INH C B A 11 10 9 6 3 13 14 15 12 1 5 2 4 1 2 3 4 5 6 7 89 10 16 15 14 13 12 11 Y4 Y6 COM Y7 Y5 INH GND GND VCC Y2 Y1 Y0 Y3 A B C INPUTSON CHANNEL INH L L L L L L L L H L L L H H H H X C L L H H L L H H X L H L H L H L H X L Y1 Y2 Y3 Y4 Y5 Y6 Y7 No
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- Yamaha RXA 3020 Service Manual Part 电路 原理图