Onkyo-HTRC270-avr-sm维修电路原理图.pdf
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1、HT-RC270 SERVICE MANUAL RC-768M AV RECEIVER Black model MODEL HT-RC270(B) 120V AC, 60HzB MDC Ref. No. 4214 062010 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
2、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-RC270 SERVICE PROCEDURE-1 ON
3、/STANDBY Clear Stand-by VCR/DVR 1. Replacing the fuses 2. Safety check out (U.S.A. model only) After correcting the original service problem, perform the following safety check before releasing the unit to the customer. Leakage current Check Measure the leakage current to a known earth ground (water
4、 pipe or conduct etc.) by connecting a leakage current tester between the earth ground and exposed metal parts of the unit (input/output ground terminals, screw heads or metal overlays etc.). Plug the power supply cord directly into a 120Vac 60Hz wall socket and turn ON/STANDBY button on. Any curren
5、t measured must not exceed 0.5mA. 3. Memory Backup This model uses a EE-PROM IC in order to retain radio presets and other settings. So, memory contents will be kept eternally with no care. 4. To initialize the unit 1. ON/STANDBY (Power On) 2. VCR/DVR + ON/STANDBY. Preset memory and each mode stored
6、 in the memory, are initialized and will return to the factory settings. This symbol located near the fuse indicates that the fuse used is show operating type, For continued protection against fire hazard, replace with same type fuse, For fuse rating, refer to the marking adjacent to the symbol. Ce
7、symbole indique que le fusible utilise est e lent. Pour une protection permanente, nutiliser que des fusibles de meme type. Ce demier est indique la qu le present symbol est apposre. REF NO.PART NAMEDESCRIPTIONPART NO.REMARKS FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE FUSE F2000 F2000 or F2001 F2001 or
8、 F6901 F6901 or F6902 F6902 or F901 4A-UL/T-233 4A-T/UL-ST2 2A-UL/T-233 2A-T/UL-ST2 15A-TUL-250V 15A-UL/T-314 15A-TUL-250V 15A-UL/T-314 10A-UL-ST6 N1 252325GR 252257GR 252320GR 252253GR 252303GR 252197GR 252303GR 252197GR 252382GR ! ! ! ! ! ! ! ! ! RadioFans.CN 收音机爱 好者资料库 HT-RC270 SERVICE PROCEDURE-
9、2 Main: 1.03/10729AM DSP 1st/NET: 1.06/10922AM7 Video: 1.02/10729AS DSP 2nd: 1.00/10429aMA VSP(Sequoia): 1.03/10709AMA TONE Main: 1.03/10729AM TONE TONE TONE TONE TONE TONE TONE TONE TONE DISPLAYON/STANDBY TONE LEVEL TONE LEVEL 5. To check version of Microprocessor, DSP and Video FW(Firmware) 1. ON/
10、STANDBY (Power On) 2. DISPLAY + ON/STANDBY. 3. TONE Tone - Forward TONE Tone - Reversed. 4. ON/STANDBY (Power Off). Main Microprocessor 1st DSP/NET (DA830) Video Microprocessor 2nd DSP VSP (Video Signal Processor) FW Version displayed only for 3 seconds. e.g. TX-NR808 : DTR-40.2/ 50.2, DHC-40.2 HT-R
11、C270 EXPLODED VIEWS-1 A 1 2 3 4 5 BCDEFGH F2001 F901 P103 P8002 P921 A285 A264 A283 A279 A253, ONLY A251 A241 A237A A245 A281 A141 P9008 A125 A135 A131 A143 A145 A143 A705 A701 A703 P2101 P8641 U0030 U0040 U0034 U0031 U007 U0041 U011 U0050 U0051 U0054 U0052 U0032 F2000 A715 x 6 pcs. A129 A129 A137 x
12、 2 pcs. A127 A127 A267 x 7 pcs. A269 x 2 pcs. A261 x 5 pcs. A255 x 12 pcs. A257 x 10 pcs. A259 x 7 pcs. A263 x 2 pcs. A181 x 5 pcs. Refer to in EXPLODED VIEWS-2 Refer to in EXPLODED VIEWS-3 A289 x 2 pcs. A035 x 5 pcs. A023 x 2 pcs. A031 x 3 pcs. A029 A197 x 4 pcs. A183 A183 x 2 pcs. A015 x 4 pcs. A0
13、17 A017 A021 x 2 pcs. A025 x 2 pcs. F6901 F6902 P640 A009A195 U0064 U0015 U0016 U0014 A032 U0010 U0011 A013 A011 A001 A019 A144 A027 A037 U0012 U0066 U0013 A121 x 9 pcs. A179 x 4 pcs. A095 x 4 pcs. A101 x 4 pcs. A097 x 4 pcs. A123 x 5 pcs. A117 x 3 pcs. A119 x 3 pcs. A193 A191 A395 A397 A183 A133 A1
14、13 A081 A185 A247 T901 U0063 F901E HT-RC270 EXPLODED VIEWS-2 HT-RC270 A355 A309 A307 A303 A305 A702 A301 A313 A315 A327 A323 A321 A351 A371 A373 A353 U0060 U0065 P7501 P3101 U0061 U0062 U0067 U0055 U0080 A317 x 18 pcs. A317 x 2 pcs. A317 x 2 pcs. A325 x 3 pcs. A317 x 5 pcs. A393 x 5 pcs. A391 x 3 pc
15、s. HT-RC270 EXPLODED VIEWS-3 HT-RC270 Q6056 Q6066 Q6054 Q6064 Q6051 Q6061 Q6052 Q6062 Q6050 Q6060 Q6053 Q6063 Q6055 Q6065 Q6050A Q6050B A007 x 14 pcs. SCHEMATIC DIAGRAMS - 1 BLOCK DIAGRAM AUDIO SECTION TX-NR708/808/1008, TX-NA708/808/1008, HT-RC270, DTR-40.2/50.2, DHC-40.2 A 1 2 3 4 5 BCDEFGH 6 7 8
16、IJK 1 2 1 1 2 1 2 2 1 1 2 2 2 1 1 2 SUB1L SUB1R MAINL MAINR MAINL MAINR REC_L REC_R 13 14 15 17 SR(DAC) 16 C FL FR MAINL MAINR SRC SLC SBRC SBLC 22 20 23 19 24 18 10 8 11 7 12 6 2 100 3 99 4 98 SL SBL SR SBR R L L R L R Z2L Z2R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R SPRLF SP
17、RLC SPRLSR SPRLFH SPRLSB C SR/Z3R SL/Z3L SBL/LH/LW(DAC) SBR/RH/RW(DAC) FL FR SPRLFW SBZ2MUT AMUTE H/PMUT PreSURMUT SWMUT SBL/Z2L/Bi_L/LH SBR/Z2R/Bi_R/RH SWZ2TONE-L SPRLFH SPRLFW SPRLSB SPRLSR SPRLC SPRLF Z3L Z3R BiAmp BiAmp LW/LH/Z3 RW/RH/Z3 Z2TONE-R Z3L 54 Z3R 53 SL(DAC) 75 76 64 65 71 70 73 72 74
18、79 59 58 76 77 78 75 68 69 66 67 64 65 56 57 82 83 43 38 95 39 96 97 98 21 23 3 5 11 Z2-Mute PreSURMUT PreSBMUT 32 33 ADCL ADCR 63 62 99 100 45 42 44 Z3-Mute Z2L Z2R Z2L Z2R 9 SR_Z3-Mute 87 86 15 17 60 61 47 46 TONE TONE HEADPHONES FRONT LEFT FRONT RIGHT CENTER LEFT RIGHT LEFT RIGHT LEFT SUR. BACK S
19、UR. BACK SUB1 should be always ON. C R2A15220FP priority terminal TV/CD IN TUNER HDMI (FRONT) OUT MAIN (ARC) HDMI SW FL FR Ref. GND RS232 RI C(DAC) ADCL ADCR SUB1L SUB1R SUB2L SUB2R Z2L Z2R Down mix : No use Tone : Use for Z3 SL(DAC) SR(DAC) SL SR SBL SBR FL(MIX) FR(MIX) SW(DAC) FL FR FR(DAC) invert
20、ed down mix -6dB 0/-6/-12/-18dB RIGHT TUNER PACK LEFT RIGHT +29dB +29dB +29dB +29dB +29dB SBL/Z2L/Bi_L/LH SBR/Z2R/Bi_R/RH SPEAKER TERMINALS POWER AMPLIFIER N/AB IN OUT IN IR L R +29dB +29dB +29dB +29dB 0dB FIX 0dB FIX TONE TONE 0dB FIX 0dB FIX Z2L Z2L Z3R Z3L Z2R +20dB R L L R ZONE 2 except JJ ZONE
21、3 Except DHC-only 7chModel only 9chModel 0.5dB step/each VR inverted down mix -6dB Z3L Z3R UNIVERSAL PORT except onk JJ CN/A B A 12V TRIGGER OUT 0.5dB step/each VR except block Z2R OUT SUB DIGITAL IN OPTICAL IN1 (FRONT) OPTICAL IN2 COAXIAL 1 COAXIAL 2 COAXIAL 3 R L CENTER L R L L R L R ( for onk JJ
22、) omission MCH SW MCH SL MCH SR SBL(DAC)BiAMP SBR(DAC)BiAMP except708,NA808/1008 R2A15218 x1 x3 PC IN L R GAME IN L R CBL/SAT IN L R VCR/DVR OUT L R VCR/DVR IN L R L R FL FR ( Mulch ch IN) C SL SR SBL SW SBR 708 Z2 route Z3 Pre Z2 Pre Wide/High Z2 TONE NET_L NET_R BD/DVD IN RX TX HDMI TX HDMI HDMI D
23、IR 2ch ADC DR99dB under study I2S(DVD-AUDIO/DSD)x4 ATT ATT 2ch ADC Analog out NET +6dB LPFVLSC +6dB LPFVLSC W/HLW/HR only 9chModel LPF +6dB VLSC FL LPF +6dB VLSC FR +6dB LPFVLSC +6dB SWC LPFVLSC +6dB SL +6dB SR LPFVLSC LPFVLSC LPFVLSC +6dB LPFVLSC SBLSBR +6dB 2ch DAC PCM1789 PCM1690 8ch DAC 2nd DSP
24、CS49834 FS0dB=4Vrms MCH C Z3 708:Z2 mirror Bi-AmpL or 708Z2L Bi-AmpR or 708Z2R SIRIUS_L SIRIUS_R PHONO (MM) L R PHONO EQ AUDIO IN (FRONT) L R SIRIUS SIRIUS for US R L L R PREOUT 9.2 or 7.2ch 1st DSP TMS320DA830 I2S(DVD-AUDIO/DSD)x4 MIC AMP ARC NewDIR/ADC SETUP MIC (FRONT) CS5361 DR114dB SURR SURR Fr
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