Yamaha-RXA-720-Service-Manual-Part-3电路原理图.pdf
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1、VIDEO (2)(Side B)VIDEO (3)(Side B) ABCDEFGHIJ 1 2 3 4 5 6 7 RX-V673/HTR-6065/RX-A720 121 Ref no. Location D3702D4 D3703D4 D3706E2 D3707H4 D3708H4 D3709H4 D3710H4 D3711H4 D3712B4 D3713A4 D3714B4 D3715B4 Q3701H4 Q3702G3 Q3703H4 Semiconductor Location RX-V673/HTR-6065 W3804B W3805A W3802AW3804A W3803AW
2、3801A CB382 CB381 W3803B W3802B JK362JK361 W3601 W3801B W3805B W3702B W3701B CB334 VIDEO (4)(Side A) VIDEO (8)(Side A)VIDEO (9)(Side A) VIDEO (6)(Side A)VIDEO (7)(Side A) R, S models U, C, T, K, A, B, G, F, L, H models R, S models DIGITAL (1) (CB81) RM+ AC_5 AC_5 E RM- INOUT REMOTE VIDEO (1) (CB331)
3、 VIDEO (2) (CB374) VIDEO (2) (W3701A)(W3702A) BE WH POWER TRANSFORMER POWER TRANSFORMER POWER TRANSFORMER VOLTAGE SELECTOR 220V 240V110V 120V RE RE OR OR BE YE YE WH GR GR ABCDEFGHIJ 1 2 3 4 5 6 7 122 RX-V673/HTR-6065/RX-A720 RX-V673/HTR-6065 VIDEO (4)(Side B) VIDEO (8)(Side B)VIDEO (9)(Side B) VIDE
4、O (6)(Side B)VIDEO (7)(Side B) R, S modelsR, S models U, C, T, K, A, B, G, F, L, H models ABCDEFGHIJ 1 2 3 4 5 6 7 RX-V673/HTR-6065/RX-A720 123 Ref no. Location D3601B3 D3602B3 Semiconductor Location RX-V673/HTR-6065 JK321 CB343 CB347 CB344 CB340 CB342 W3401 CB346 CB324 CB303 CB302 CB323 CB331 IC333
5、 IC334 VIDEO (1)(Side A) SPRY_Z2 SBLE SBRE SBL SBR +12V -12V HP_N_DET HPL HPR E OPERATION (8) (CB463) MAIN (1) (CB104) OPERATION (3) (CB471) VAUXV VAUXE +5V IP1V IP1EV 200_DET TUE TUL TUR OPERATION (2) (CB455) VE DAPr VE ADPb VE DAY VE DACVBS VE ADPr VE ADPb +5VA VE ADY AD_CVBS R SURROUND BACK/ BI-A
6、MP LR LCENTERSURROUND SPEAKERS R +/-+/-+/-+/-+/-+/-+/- VIDEO VIDEOCOMPONENT VIDEO PR/PB/YPR/PB/Y AV OUT AV6AV5AV4AV3AV2AV1TRIGGER OUT COMPONENT VIDEO PR/PB/Y MONITOR OUT LFRONT RST SCL Rch Lch SDA GPI02 GND +5T DIGITAL (1) (CB21) AM/FM TUNER DIGITAL (1) (CB76) C FL FR FR MAIN (1) (W107) SBLE SBL SBR
7、 SL SR SBRE SLE SRE CE FLE FRE MAIN (1) (W116) MAIN (1) (CB103) +12V E -12V +18V MAIN (1) (W110) AC-5 E AC-5 VIDEO (7) (CB334) 1 OUTIN GND 4 EX_MOSI PS1_PRT TUN_SDA/HDR_MOSI SPRY_SB +5M EX1_N_RST HP_N_DET SPRY_5CH TUN_RST/HDR_N_RST SPRY_Z2 L3_DET EX1_N_CS TUN_N_INT VID_PON PS2_PRT EX_SCL TUN_SCL/HDR
8、_MISO N.C N.C HPRY ABCDEFGHIJ 1 2 3 4 5 6 7 124 RX-V673/HTR-6065/RX-A720 RX-A720 Ref no. Location D3304E6 IC333C6 IC334D6 Q3204F3 Q3205F3 Q3206F3 Q3207F3 Q3302D6 Q3303D6 Q3304D6 Q3305D6 Semiconductor Location IC307 IC308 IC305 IC306 IC302 IC392 IC310IC303 1 16 8 9 1 24 12 13 1 14 7 8 1 14 7 8 1 16 8
9、 9 8 7 14 1 7 8 1 14 8 9 1 16 VIDEO (1)(Side B) No replacement part available. ABCDEFGHIJ 1 2 3 4 5 6 7 RX-V673/HTR-6065/RX-A720 125 Ref no. Location D3310C6 D3403E4 D3404F4 D3405I4 D3406G4 D3407H4 IC301D4 IC302E4 IC303B4 IC305D3 IC306E4 IC307C3 IC308C4 Semiconductor Location Ref no. Location IC310B
10、4 Q3001C3 Q3306E5 Q3405E4 Q3406E4 Q3407F4 Q3408F4 Q3409I4 Q3410I4 Q3411G4 Q3412G4 Q3413H4 Q3414H4 RX-A720 IC374 IC372 IC373 IC371 CB374 CB371 CB376 W3701A W3702A CB377 CB375 W3703 VIDEO (2)(Side A)VIDEO (3)(Side A) VIDEO (6) (W3701B)(W3702B) BE WH AC_PWR DGND +5.5V +5.5V +5.5V +5.5V GND GND GND GND
11、PRY_IN K R A 1 4 8 5 AC_PWR DGND +5.5V +5.5V +5.5V +5.5V GND GND GND GND PRY_IN 5 k-ohms 10 W DIGITAL (1) (CB942) DIGITAL (1) (CB944) GND +3.3M DGND ACPWR_DET CPU_N_RST PRY DEST GND 5.5V 5.5V AC IN ABCDEFGHIJ 1 2 3 4 5 6 7 126 RX-V673/HTR-6065/RX-A720 Ref no. Location D3701D3 D3704C4 IC371E4 IC372D5
12、 IC373D5 IC374B4 Semiconductor Location RX-A720 Safety measures Some internal parts in this product contain high voltages and are dangerous. Be sure to take safety measures during servicing, such as wearing insulating gloves. Note that the capacitors indicated below are dangerous even after the powe
13、r is turned off because an electric charge remains and a high voltage continues to exist there. Before starting any repair work, connect a discharging resistor (5 k-ohms/10 W) to the terminals of each capacitor indicated below to discharge electricity. The time required for discharging is about 30 s
14、econds per each. C3706 on VIDEO (2) P.C.B. VIDEO (2)(Side B)VIDEO (3)(Side B) ABCDEFGHIJ 1 2 3 4 5 6 7 RX-V673/HTR-6065/RX-A720 127 Ref no. Location D3702D4 D3703D4 D3706E2 D3707H4 D3708H4 D3709H4 D3710H4 D3711H4 D3712B4 D3713A4 D3714B4 D3715B4 Q3701H4 Q3702G3 Q3703H4 Semiconductor Location RX-A720
15、JK362JK361 W3601 W3702B W3701B CB334 VIDEO (4)(Side A)VIDEO (6)(Side A)VIDEO (7)(Side A) DIGITAL (1) (CB81) RM+ AC_5 AC_5 E RM- INOUT REMOTE VIDEO (1) (CB331) VIDEO (2) (W3701A)(W3702A) BE WH POWER TRANSFORMER POWER TRANSFORMER VIDEO (4)(Side B)VIDEO (6)(Side B)VIDEO (7)(Side B) ABCDEFGHIJ 1 2 3 4 5
16、 6 7 128 RX-V673/HTR-6065/RX-A720 RX-A720 Ref no. Location D3601C6 D3602C6 Semiconductor Location A 1 2 3 4 5 6 7 8 9 10 BCDEFGHIJKLMN 129 DIGITAL 1/8 RX-V673/HTR-6065/RX-A720 SCHEMATIC DIAGRAMS All voltages are measured with a 10M/V DC electronic voltmeter. Components having special characteristics
17、 are marked and must be replaced with parts having specifications equal to those originally installed. Schematic diagram is subject to change without notice. 1.81.8 0 0 3.33.3 5.05.5 1.8 1.2 3.3 5.5 5.5 1.2 1.2 1.4 2.5 3.2 0 0 0 3.3 3.3 3.3 3.3 0 3.3 3.3 0 3.3 3.3 3.3 0 0 0 0 3.3 5.4 3.3 3.3 HRX_CLK
18、 HRX_DE HRX_HS HRX_VS HRX_D0 HRX_D1 HRX_D2 HRX_D3 HRX_D4 HRX_D5 HRX_D6 HRX_D7 HRX_D8 HRX_D9 HRX_D10 HRX_D11 HRX_D14 HRX_D15 HRX_D16 HRX_D17 HRX_D18 HRX_D19 HRX_D20 HRX_D21 HRX_D22 HRX_D23 DSDA0 DSCL0 HPD0 DSCL1 DSDA1 HPD1 DSCL2 DSDA2 HPD3 R3PWR5V DSCL3 DSDA3 DSDA4 DSCL4 HPD4 DSDA0 DSCL0 HPD0 DSDA1 D
19、SCL1 HPD1 DSDA3 DSCL3 HPD3 DSDA4 DSCL4 HPD4 DSDA2 DSCL2 DSCL4_B DSCL3_B DSDA3_B R0PWR5V_B HPD0_B DSCL0_B DSDA0_B HPD4_B DSCL4_B DSDA4_B DSDA4_B R3PWR5V_B R3PWR5V_B HPD3_B DSDA3_B HPD2 HRX_D13 HRX_D12 DSDA0_B DSCL0_B R0PWR5V_B HPD0_B DSCL3_B R4PWR5V_B HPD3_B HRX_D27 HRX_D26 HRX_D25 HRX_D24 HRX_D28 HR
20、X_D29 HRX_D30 HRX_D31 HRX_D32 HRX_D33 HRX_D34 HRX_D35 HRX_D36 HRX_D37 HRX_D38 HRX_D39 HRX_D40 HRX_D41 HRX_D42 HRX_D43 HRX_D44 HRX_D45 HRX_D46 HRX_D47 R4PWR5V HPD2 R2PWR5V R1PWR5V R05VPWR R4PWR5V R2PWR5V R4PWR5V_B RT_MCLK RT_WS/D2B RT_SCK/DCLK RT_SD3/D2A RT_SD2/D1B RT_SD1/D1A RT_SD0/D0B RT_SPDIF/D0A
21、R05VPWR R1PWR5V R3PWR5V HPD4_B C119 0.1/10(BJ) L22 BKP1005HS680-T R163 no_use C22 0.1/10(BJ) R3847K R34 5.1K DGND R28 no_use +5H +1.2DH R219 no_use C118 0.1/10(BJ) D25 no_use 1245 6789 3 DGND C29 100P(CH) DGND RP130Q181D-TR-F IC6 4 VDD 2 GND 3 VOUT 1 CE/CE R24 5.1K C50 10/6.3 DGND DGND R93 33X4 C116
22、 10/6.3 DGND R117 5.1K R184 10K C133 100P(CH) +3.3H R47 no_use J35no_use HRX_CLK,HRX_D0-47,HRX_DE,HRX_HS,HRX_VS L38 10UH DGND L25 BKP1005HS680-T C16 no_use R119 100 TP16 C36 no_use C68 no_use C10 1000P(B) R14 no_use R16922 C164 no_use TP20 R7 47K CB8 52793-2270WD29580 1 2 3 4 5 6 7 8 9 10 11 12 13 1
23、4 15 16 17 18 19 20 21 22 23 24 R104 10 D32 no_use 1245 6789 3 TP6 C102 1000P(B) DGND C91 no_use +3.3H C54 1000P(B) R49 4.7K DGND R12222 +3.3H TP26 DGND TP15 DGND R3 no_use DGND +5H R1200 R101 47K J18 0 DGND R160 10K RP130Q501D-TR-F IC8 4 VDD 2 GND 3 VOUT 1 CE/CE R77 33X4 C39 0.1/10(BJ) C121 10/6.3
24、R147 1K J19 0 R218 10 UPA672T-T1-A Q21 G 2 D 6 S 1 R140 0 DGND C53 1000P(B) Q2 no_use +3.3H R9 no_use DGND IC4 BD9329AEFJ 1 BST 2 VIN 3 SW 4 GND 5 FB 6 COMMP 7 EN 8 SS G C47 10/6.3 C148 1000P(B) +1.8H R176 no_use L31 BKP1005HS680-T R3747K R16522 R740 C43 10/6.3 DGND DGND C25 10/6.3 C139 0.1/10(BJ) J
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