Onkyo-HTR670-avr-sm维修电路原理图.pdf

HT-R670 SERVICE MANUAL RC-737M AV Receiver MODEL HT-R670(B) Ref. No. 4127 07, 2009 HT-R670 Black model 120V AC, 60Hz, 4.9A 220-240V AC, 50/60Hz, 470W B MDC B MMO HT-S6200(B)MDC = HT-R670(B)MDC + HTP-670(B)MDC + UP-A1(B)MU HT-S6200(B)MMO = HT-R670(B)MMO + HTP-670(B)MMO + UP-A1(B)MU SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE THESE COMPONENTS WITH ONKYO PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. RadioFans.CN 收音机爱 好者资料库 HT-R670 EXPLODED VIEWS-1 HT-R670 T901 F901 F901C A001 A101 A056 A070 A030 A032 A340 A362 A360 A262 A264 A034 A044 A069 A017 A015 A019 A010 A040 A040 A256 A011 U0015 U002 U004 P101 P901 U001 U005 U0032 U0021 U010 U0033 U0034 U0011 U0012 A342(Black model) x 7 pcs. A003 x 4 pcs. A103 x 7 pcs. A105 x 29 pcs. A013 x 2 pcs. A025 x 4 pcs. A009 x 3 pcs. A042 x 2 pcs. A036 x 2 pcs. A038 x 2 pcs. A040 x 2 pcs. A036 x 2 pcs. A258 x 2 pcs. A258 x 2 pcs. A260 x 3 pcs. A005 x 4 pcs. A007 x 4 pcs. See in EXPLODED VIEWS-3 See in EXPLODED VIEWS-2 A054 A058 A023 U0013 U0014 F6901 F6902 A021 x 2 pcs. A350 A354 x 8 pcs. RadioFans.CN 收音机爱 好者资料库 HT-R670 EXPLODED VIEWS-2 HT-R670 A219 A217 A230 A234 A207 A250 A236 A213 A215 A221 A201 A330 A202 U003 P701 U0031 A225 x 27 pcs. A232 x 5 pcs. A238 x 2 pcs. A238 x 2 pcs. HT-R670 EXPLODED VIEWS-3 HT-R670 Q6056 Q6066 Q6055 Q6065 Q6054 Q6064 Q6053 Q6063 Q6051 Q6061 Q6050 Q6060 Q6052 Q6062 Q6050A x 2 pcs. Q6050B x 6 pcs. AXXX x 14 pcs. TX-SR507/SA507/SR577/HT-R670 BLOCK DIAGRAMS-1 / PART-1 AUDIO SECTION A 1 2 3 4 5 BCDEFGH 6 7 8 IJK AMUT FRL CSRL SBRL Z2RL HP IN SBMUT REC L REC R MAIN R MAIN L SUB L SUBR Z2MUT SB REALY MUTE FRONT LEFT FRONT RIGHT CENTER SURROUND LEFT SURROUND LEFT SURROUND RIGHT SURROUND RIGHT SURROUND BACK LEFT SURROUND BACK RIGHT DIR 2ch ADC - - HEADPHONES 8ch DAC X171 XTAL 24.576MHz 3.07MHz 48KHzLRCK DSP_RMCLK 12.288MHz BCLK LRCK 3.07MHz 48KHz CS42518CQZR-DQ301 17.734MHz DSPCLK DIGSDO DIGSDI DSPCLK DIGSDI DIGSDO DIGCLK SPI Q282 FLASH ROM 16M Bit Q281 SD_RAM 16M bit 133MHz SDRAM CLK Q201 6MHz X701 XTAL XIN XOUT SI CLK Q610 EEPROM SO CLK SI SO XOUT XIN 500KHz FLDCLK FLDSDO Q701 DSP D788E001BRFP266Z MPD70F3746GJ X202 XTAL +29dB +29dB +29dB +29dB +29dB +29dB +29dB PREOUT SW PREOUT SURROUND BACK RI INTERFACE RI SPI SPI LPF LPF LPF LPF LPF LPF Q401 Q401 Q402 Q402 Q403 Q403 Q404 Q404 TX OUT HDMI RX HDMI IN4 IN3 IN2 IN1 BCLK MCLK HDMI MAIN MICROPROCESSOR LEFT ZONE 2 SPEAKERS RIGHT 24.576MHz I2S(DVD AUDIO) SIRIUS SIRIUS Q7401 SETUP MIC SIRIUS ANATENA MIC AMP DD/DC ONLY MIC DET LPF LPF COAX 1 COAX 2 OPT1 OPT2 TONE TONE Q5501 FL FR INVERTING SL C SR SBR/SR SBL/SL SW Z2 L Z2 R SBL/SLSBR/SR FL CEN INVERTING FR SL SW SR SBL SBR DVD VCR/DVR IN VCR/DVR OUT CBL/SAT CD TAPE OUT TAPE IN TUNER L R REC L REC R FRSWFLCSR (SA507MJJ ONLY) R2A15218FP R L R L SL ZONE 2 LINEOUT HDMI TX-SR577 HT-R670 ONLY TX-SR577 HT-R670 ONLY TX-SR507/TX-SA507 ONLY TX-SR507/TX-SA507 ONLY TX-SR507/TX-SR577/HT-R670 ONLY TX-SR507/TX-SR577/HT-R670 ONLY TX-SR507/TX-SA507 ONLY AUX IN (FRONT IN) (FRONT IN) 49 50 13 14 15 16 48 47 120 141 139 70 1 64 62 63 59 60 54 61 117 116 115 113 2 3 142 144 2 55 7 8 9 17 108 110 111 59 60 58 38 29 181 220 2 5 6 10 8 9 13 12 7 86 7 46 45 42 44 43 28 29 26 27 21 20 22 23 32 33 31 30 36 37 35 34 135 137 138 78 79 68 69 66 67 64 65 63 62 60 61 58 59 90 91 2 3 6 5 14 15 8 9 12 11 17 18 21 20 23 24 38 95 94 43 93 42 98 97 40 96 37 99 36 44 45 47 46 55 54 41 100 39 82 81 73 72 71 70 76 75 84 83 85 86 + R5815 0 R5812 0 R5816 0 R5811 0 R5818 0 R5813 0 R5817 0 R5814 0 J5522 J5521 EXCEPT TX-SA507 TUNER UNIT UNIVERSAL PORT 112 1324 (STEREO MINI JACK FRONT INPUT) PORTABLE R L R L R L R L R L R L R L R L R L BAHDM-0060 (PART-11) SPEAKER TERMINALS POWER AMPLIFIER AUDIO MUTING Audio Processor (Input Selecter, Volume, Tone Control) M66005 Q7003 FL DRIVER DISPLAY BOARDBADIS-0036 (PART-9) R5811 - R5814 R5815 - R5818 YES YESNO NO TX-SR507 TX-SA507 TX-SR577 HT-R670 DIR and CODEC(8ch DAC, 2ch ADC) DIGITAL IN Refer to SCHEMATIC DIAGRAM-3 / PART-5 and SCHEMATIC DIAGRAM-17 / PART-19 for digital audio signal waveforms. BLOCK DIAGRAMS-2 / PART-2 VIDEO SECTION TX-SR607/SA607/SR507/SA507/SR577/DTR-30.1/20.1/HT-RC160/HT-R670 A 1 2 3 4 5 BCDEFGH TMDS PWR5V S/PDIF Digital Video ADINPY MMP (Main Microprocessor) ADINPB ADINPR ADINCV CEC CEC CEC CEC CEC CEC TMDS4 CEC TMDS DDC RPWR RPWR0 HPD0 DDC0 TMDS0 DDC1 RPWR1 HPD1 TMDS1 DDC2 RPWR2 HPD2 TMDS2 HPD3 RPWR3 DDC3 TMDS3 HPD3 RPWR3 DDC3 TMDS3 HPD4 RPWR4 DDC4 S/PDIF DDC HPD I2S I2C CEC MUTE I2C I2C A INH B I2C CEC I2C HDMI HDMI OUT SII9134 Q8401 CB1 CR1 Y2 CB2 CR2 Y1 IN 1 IN 2 BAVD-0038 PART-6 BAVD-0048 PART-6 BAVD-0031 PART-15 BAHDM-0060 PART-11/12 BAHDM-0063 PART-11/12 PY Y CB CR COMPONENT VIDEO OUT PB PR NJW1326FH2 Q3002 VIDEO SW :TX-SR607/SA607/SR507/SA507/SR577/HT-RC160/HT-R670 :DTR-30.1/20.1 GAME/TV AUX1 (FRONT) COMPOSITE VIDEO INPUT CV MMP MMP DVD VCR/DVR CBL/SAT VIDEO PROCESSOR HUDSON2 FLI30502 Q8001 BUS BUFFER TC74VCX162244FT D4 VIDEO INPUT COMPONENT VIDEO INPUT TC74HC4053 TRANSMITTER D4 OUT MONITOR VCR/DVR COMPOSITE VIDEO OUTPUT HDMI SII9233ACTU Q8501 RECEIVER TX-SA607/TX-SA507 ONLY(JAPAN) HDMI IN2 HDMI IN1 HDMI IN3 HDMI IN4 HDMI IN4 TX-SR507/TX-SA507/TX-SR577 HT-RC160/HT-R670/DTR-20.1 ONLY HDMI IN5 TX-SR607/TX-SA607/DTR-30.1 ONLY :TX-SR507/SA507/SR577/ HT-R670/DTR-20.1 :TX-SR607/SA607/ HT-RC160/DTR-30.1 TX-SR607/TX-SA607/DTR-30.1 ONLY FRONT HDMI IN SII9185ACTU Q8162 HDMI SW HP DET +5V DDC CEC TMDS DRV6dB DRV6dB DRV DRV 6dBDRV DRV DRV DRV DRV DRV DRV4/6dB DRV 1 2 3 4 5 6 714 13 12 11 10 9 8 1 2 3 4 5 6 714 13 12 11 10 9 8 1 2 3 4 5 6 714 13 12 11 10 9 8 HP DET +5V DDC CEC TMDS HP DET +5V DDC CEC TMDS HP DET +5V DDC CEC TMDS HP DET +5V DDC CEC TMDS HP DET +5V DDC CEC TMDS HP DET +5V DDC CEC TMDS CEC TMDSF HPD4 RPWR4 DDC4 HDMI BUFF TMDS141 HP DET +5V DDC CEC TMDS Refer to SCHEMATIC DIAGRAM-4 /PART-6 for analog video signal waveform measurement point, and SCHEMATIC DIAGRAM-9 / PART-11 for HDMI signal waveform measurement point. Refer to SCHEMATIC DIAGRAM-17 / PART-19 for the waveforms. OSD is not output to analog video output, but only to HDMI OUT. Video Signal Flow Analog Analog Above analog ex. is Component HDMI HDMI (THROUGH MODE) HDMI HDMI Analog HDMI OSD HDMI 1 4 3 2 5 Composite Composite6 SCHEMATIC DIAGRAMS-1 / PART-3 AUDIO SECTION TX-SR507/SA507/SR577/HT-R670 A 1 2 3 4 5 BCDEFGH 6 7 8 JKL C_OUT FR_OUT FL_OUT DAC-FR_D DAC_FL_D DAC_SW_D AUX_L AUX_R DAC_CT DAC_FR DAC_SW DAC_GND DAC_FL DAC_SW DAC_FR AUX_L AUX_R DAC_CT MICOUT DAC_SL DAC_SR IPROTECT SEC1H VOLDATA VOLCLK VOLH SR_RXD SR_TXD SR_RST SBMUTE Z2MUT GND_E +22V SBR C FL FR SR SL SBL DAC_SBL DAC_SBR MULTI_L Z2RE Z2L Z2LE Z2R DA_SBR DA_SL DA_SR SW_OUT LTAD RTAD SBRELAY SBRELAY +22V GND GND GND_S1 GND_AMP -15V +15V +15V MULTI_R AMUT SL_OUT SR_OUT SBR_OUT SBL_OUT TU_R GND TU_L GND -15V GND MUTE VOLH SEC1H IPROTECT VPROTECT VPROTECT RI RIGND DMIXR DMIXL DAC_FL S1L+ DA_SBL S1L- SEC2_2 SEC2_2 FLAC1 FLAC2 SEC3_1 SEC3_2 SEC2_1 +3.3VMPU GNDDG2 THERMAL AC_S1R-_ AC_S1L-_ VCR/DVR OUT VCR/DVR IN TAPE OUT CD L R L R L R L R L R L R L R L R L R DVD/BD Downmix TAPE IN +7.0V -7.0V TUNER GAME/TV TO BAVD-0038 PART-6:F8 TO BATRM-0029 PART-7:F3 BAAF-0008(1/2) CBL/SAT ZONE 2 SPEAKERS Subwoofer NOT USED C6086 C6087 C6076 C6077 NO MODEL & TYPE NO NO NO YES YES NO YES TX-SA507 Z2_LINEOUT_MUTE AMUT SBMUTE DAC_SBL DAC_SBR DAC_SL DAC_SR R5811- R5814 NO NOYES YES TX-SR705 TX-SA705 TX-SR507 TX-SA507 0 ohm 2.2K 7-ch Power Amplifier 5-ch Power Amplifier TX-SR507/TX-SA507 DD/DC 270 100 RN1441 R5613, R5614 R5623, R5624 Q5613, Q5614NO N.M N.M N.M +15V +15V+15V +15V -15V -15V-15V TX-SA507 ONLY R5815- R5818 N.M N.M TX-SR577 HT-R670 TX-SR577 HT-R670 R5712 R5713 R5683 R5680 R5682 R5710 R5711 YES YES YES YES YES YES YES YES YES YES YES YES NO NO NO NO NO NO NO NO NO TX-SR507 TX-SR577/HT-R670 TX-SR507 TX-SR577 TX-SR507 TX-SR577 OTHER HT-R670 MO HT-R670 DC PREOUT-M TO BADG-0025 PART-5:L7 TO BADG-0025 PART-5:L7 TO BADG-0025 PART-5:L6 TO BADG-0025 PART-5:L6 RI TO BAAF-0008(2/2) PART-4:A4 TO BAAF-0008(2/2) PART-4:F6 TO BAAF-0008(2/2) PART-4:A4 NMNM NM NM TO BAAF-0008(2/2) PART-4:B8 TX-SA507 TX-SR577 HT-R670 TX-SR507/TX-SR577 ONLY N.C. TO BAVD-0038 PART-6:C8 TO BAAF-0008 PART-4:A7 TO BAAF-0008 PART-4:B6 BAPS-0009 DD/DCOTHER 0.22(1/2W)0.1(1/2W)R951 TYPE BAETC-0011BAPS-0010 P6903B(YEW) P6904B(GRN) P6900B(BLK) TO BADG-0025 PART-5:L5 R5619 2.2K R5618 2.2K R5608 220K C5673 220/25 R5599 10K R5597 1.2K R5596 470R5598 10K C5591 330J R5595 10K R5593 1.2K R5592 470 R5591 10K R5594 10K C5590 330J R5590 10K R5690 220K R5689 220K C5667 220/25 C5666 220/25 R5666 22 R5609 220K C5515 NC C5516 NC C5518 221J R5516 2.2K C5514 221J C5513 221J C5517 221J C5502 221J C5501 221J C5506 NC R5546 220K C5505 NC R5545 220K R5505 2.2K C5503 221K C5504 221K C5519 221K C5520 221K C5705 102J C5508 221J C5507 221J R5506 2.2K R5667 22 R5578 47K R5634 10K C5632 103J R5632 15K R5633 1.2K C5630 47/50 R5630 220 R5631 47K C5631 221J R5585 1.8K C5563823J C5564223J C5609 47/50 C5565 474J C5566 823J C5567 223J C5601 47/50 C5600 47/50 C5602 47/50 R5602 220K R5600 220K R5607 220K R5579 47K C5608 47/50 C5671 10/50 R5569 220K C5704 102J D5672 MTZJ6.2B D5674 1SS133 D5673 1SS133 D5671 MTZJ6.2B C6086 103J C6077 102J C6087 103J C6076 102J R5601 220K R5611 2.2K R5610 2.2K R5612 2.2K C5606 47/50 C5605 47/50 Q5607RN1441 R5606 220K R5605 220K R5515 2.2K C5674 470/16 C5675 470/16 R5509 NC R5510 NC R5550 NC R5549 NC C5509 NC C5510 NC R5692 220K R5693 220K R5694 220K C557147/50 C557047/50 C557247/50 C557747/50 R5696 220K R5695 220K C557447/50 C557347/50 C557647/50 R5604 220K R5603 220K C5603 47/50 C5604 47/50 R5628 22 C5712103K D5701 1SS133 RL5701 8 10 5 3 121 4 9 R5708 0 Q5630:B 5 6 8 7 Q5605 RN1441 Q5604 RN1441 Q5603 RN1441 R5617 270 R5625 0 R5626 0 R5627 100 R5680 220K R5682 220K R5712 0 R5713 0 R5586 1.8K R5710 0 C557547/50 R5614 LIST R5613 LIST R5616 2.2K C5531 221J C5530 221J R5531 330 R5571 2.2K R5570 2.2K D5717 KDS4148U D5707 KDS4148U C5707 102J R5575 220K C5536 221J C5535 221J R5536 100 R5535 100 R5576 220K R5577 22K C5527 221J C5708 102J R5528 100 D5708 KDS4148UD5718 KDS4148U Q5600 RN1441 Q5602 RN1441 Q5609 RN1441 R5624 R5623 Q5614 Q5613 Q5608 RN1441 R5621 0 R5620 0 R5622 0 R5615 2.2K JL5502A 1 2 3 4 5 P5502B 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 P5503B 1 2 3 4 5 6 7 8 9 P5504B 1 2 3 4 5 6 7 JL6604A 1 2 3 4 5 P6602 L R Q5617 RN1441 Q5615 Q5611 Q5612 R58180 R58110 R58160 R58150 R58120 P7903 P7907 P7908 P7910 D5716 KDS4148U D5706KDS4148U C5711 102J Q5630:A NJM4580 3 2 1 4 Q5503:A NJM4580 1 2 3 4 Q5503:B 7 8 6 5 C5672 220/25 D5805 RL1N4003 R5520 330 R5519 330 R5518 330 R5517 330 R5514 330 R5513 330 R5508 330 R5507 330 R5504 330 R5503 330 R5502 330 R5501 330 R5541 100K R5542 100K R5543 100K R5544 100K R5547 100K R5548 100K R5553 100K R5554 100K R5556 220K R5555 220K R5557 100K R5558 100K R5559 100K R5560 100K R5709 0 D5804 RL1N4003 R58065.1K R58055.1K R58025.1K R58075.1K R58045.1K R58035.1K C5562 474J R5587 10K R558810K R5681 220K R5683 220K R5530 330 C5800 334J C5801 1000/35 R5678 NM R5679 NMC5670 10/50 R5686 N.M R5688 N.M R5685 N.M R5687 N.M Q5606 RN1441 C5703102J C5702NC Q5670 78M15 3 O 2 G 1 I R5580 100K R5581 100K Q5601RN1441 Q5610 Q5616 P7904 NOT USED P7901 P7902 P7909 P7911 R5711 0 Q5501 AUDIO PROCESSOR (SELECTOR,TONE,VOL) R2A15218FP 80 N.C. 79 IN-L9 78 IN-R9 77 N.C. 76 INLA/RECL1 75 INRA/RECR1 74 N.C. 73 IN-L8 72 IN-R8 71 IN-L7 70 IN-R7 69 IN-L6 68 IN-R6 67 IN-L5 66 IN-R5 65 IN-L4 64 IN-R4 63 IN-L3 62 IN-R3 61 IN-L2 60 IN-R2 59 IN-L1 58 IN-R1 57 N.C. 56 AGND 55 ADCR 54 ADCL 53 N.C. 52 AVEE 51 MUTE 50 CLOCK 49 DATA 48 DGND 47 SUBR 46 SUBL 45 SBLC-IN 44 SBRC-IN 43 FR-IN2 42 FL-IN2 41 SR-IN2 40 SL-IN2 39 SW-IN2 38 C-IN2 37 SBR-IN2 36 SBL-IN2 35 N.C. 34 TRER 33 BASS-R2 32 BASS-R1 31 N.C. 30 AVCC 29 N.C. 28 TREL 27 BASS-L2 26 BASS_L1 25 N.C. 24 FRC 23 FR-OUT 22 AGND 21 FL-OUT 20 FLC 19 AGND 18 CC 17 C-OUT 16 AGND 15 SW-OUT 14 SWC 13 N.C. 12 SRC 11 SR-OUT 10 AGND 9 SL-OUT 8 SLC 7 AGND 6 SBRC 5 SBR-OUT 4 AGND 3 SBL-OUT 2 SBLC 1 N.C. 100 SBR-IN1 99 SBL-IN1 98 SR-IN1 97 SL-IN1 96 SW-IN1 95 C-IN1 94 FR-IN1 93 FL-IN1 92 N.C. 91 RECL3 90 RECR3 89 N.C. 88 N.C. 87 N.C. 86 INL11/RECL5 85 INR11/RECR5 84 INL10/RECL4 83 INR10/RECR4 82 INLB/RECL2 81 INRB/RECR2 R5670 R5672 10(2W) 10(2W) R5673 R5671 27(2W) 27(2W) D5800 RL1N4003 D5801 RL1N4003 D5802 RL1N4003 D5803 RL1N4003 C5802 470/35 C5557 47/25 C5556 47/25 C5555 47/25 C5554 47/25 C5553 47/25 C5552 47/25 C5551 47/25 C5550 47/25 P5501B 1 2 3 4 5 6 7 R5733C5715 C5716 R5809 100 NOT USED D5709 KDS4148UC5803 0.22/50 R5500 330 C5607 100/25 C5560 47/25 C5561 47/25 C558647/25 C5585 47/25 TP550 TP570 TP660 TP662 TP661 L5501 LBC2518T2R2M R5582100K R58130 R58140 J5402 TX-SR507 ONLY R58170 R55890 R5734 0 C5717 Q5671 79M15 3 O 2 I 1 G Q5670A J5404 NM J5405 C5709 47/25 C5710 47/25 P7900 R5568 47K R5567 47K Q5701 RN1402 TP951 P953 P956 P952 P955 P954 P951 P950 R951 0.22(1/2W) JL9101A 1 2 3 4 5 6 7 R950 8.2(1/2W) C950 104J TP631 JL5501A 3 2 1 Q6380A 1 2 Q6380 THERMAL SENSORLM61CIZ 1 G 2 O 3 V C6630 104Z TP6905 JL6952A 1 2 3 4 5 TP6903 TP6900TP6904 P19P18P16P17P15 R5660 0.22(1W) 0.22(1W) R5661 R5675R5677 R5674 68(1W) 68(1W) 68(1W) 68(1W) R5676 U001 AMPLIFIER PC BOARD U0011 TRANS 2ND TERMINAL PC BOARD TRANS 2ND TERMINAL PC BOARD U0012 U0013 THERMAL SENSOR PC BOARD PRE OUT SURROUND BACK R L TX-SR507/TX-SA507 ONLY PRE OUT SW R L ZONE 2 LINE OUT TX-SR507/577/HT-R670 ONLY TX-SR507/TX-SR577/HT-R670 ONLY TX-SR507/577/HT-R670 ONLY NOTE: XY in “SCHEMATIC-a / PART-b:XY” indicates the target location of the plug or socket, X=A to E/H/K, Y=1 to 4/5/8. THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY. REPLACE ONLY WITH PART NUMBER SPECIFIED. BOLD VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL). ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED. ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED. ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED. ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV. ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED. EX) 030- 3pF, 330- 33pF, 331- 330pF, 333- 0.033uF ALL RESISTORS ARE IN OHMS 1/6 WATT UNLESS OTHERWISE NOTED. THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS. EX) PRINTING SIDE “NM” AND “NC” ARE SHORT FOR “NOT MOUNTED” AND “NOT CONNECTED”, WHICH MEANS NO PART IS MOUNTED ON WIRING PATTERN OF PCB. CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT. ! NOTE SCHEMATIC DIAGRAMS-2 / PART-4 POWER AMP SECTION TX-SR507/SA507/SR577/HT-R670 A 1 2 3 4 5 BCDEFGH 6 7 8 JKL GND VOLH SEC1H -BL +BL IPRO -BR +BR IPRO -BC +BC IPRO -BSL +BSL IPRO -BSR +BSR IPRO -BSBL +BSBL IPRO -BSBR +BSBR IPRO SBL SL GND_S1 GND_S1 GND_S1 GND_S1 SR GND_S1 SBR C FR FL +22V -B1H_B AC_S1L- -B1C -B1R +B1C +B1R -B1L +B1L+B1SL -B1SL