Onkyo-HTR820THX-avr-sm维修电路原理图.pdf

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1、HT-R820THX SERVICE MANUALSERVICE MANUAL AV RECEIVER Black model MODEL HT-R820THX 120V AC, 60HzBMDC Ref. No. 3838 102004 RC-571M STANDBY/ON PHONES DISPLAYTUNING MODEDIGITAL INPUT LISTENING MODETHXMEMORY RETURNSETUP VIDEO 2TAPETUNERC DVIDEO 3VIDEO 1 SPEAKERS BA MASTER VOLUME ENTER S VIDEOVIDEOAUDIO VI

2、DEO 3INPUT CLEAR TUNING PRESET HT-R820THX STANDBY LR TONE VCR CD +100CLEAR 123 456 789 V1V2V3 DVDMULTI CH -/- TAPETUNER INPUTI + - ENTER S E T U P G U I D E R E T U R N E X I T Re-EQ CH SELTEST TONE DSPDIRECT STEREOALL STSURR L NIGHT T O P M E N U M E N U VOL + - CDR SAT AMP TVVCRCABLE DVDCDMD DISC

3、CH TONE TUNER/ TAPE DISPLAY TV INPUT PREV CH DIMMERSLEEP RANDOMSP ASP B MUTING ANGLE SEARCH SUBTITLEAUDIO MEMORYA-BREPEAT ONSTANDBY T V TV CH T V VOL RC-571M REC LAST M REMOTE MODE OPEN/CLOSE DSP THX VIDEO OFF OR-EQ LEVEL -LEVEL + + _ SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK O

4、N 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 T

5、HE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. RadioFans.CN 收音机爱 好者资料库 HT-R820THX SPECIFICATIONS Amplifier Section Video Section Tuner Section General Audio Outputs Analog outputs: Subwoofer pre out: Speaker outputs: Phones: Specifications and features are subject to change withou

6、t notice. Power supply: Power consumption: Standby power consumption: Dimensions (W x H x D): Weight: AC 120 V, 60 Hz 6.6 A 2.5 W 17-1/8 x 5-7/8 x 14-13/16 (435 x 150 x 376 mm) 22.5 lbs. (10.2 kg) Video Inputs Component video inputs: S-Video inputs: Video inputs: 2 (DVD, Video 1/2/3) 4 (DVD, Video 1

7、-3) 4 (DVD, Video 1-3) 2 (Tape Out, Video 1 Out) 1 6+2 1 4 (Optical 1-3, Coaxial) 6 (CD, Tape, DVD, Video 1-3) 5.1 ch (Front L/R, Center, S urround L/R, Subwoofer) Audio Inputs Digital inputs: Analog inputs: Multichannel analog inputs: 1 (Component Video Out) 2 (Video 1 Out, Monitor Out) 2 (Video 1

8、Out, Monitor Out) Video Outputs Component video outputs: S-Video outputs: Video outputs: FM Tuning frequency range: Usable sensitivity: S/N ratio: THD: FM stereo separation: 87.5-107.9 MHz FM STEREO 17.2 dBf, 2.0 V (75 IHF) FM MONO 11.2 dBf, 1.0 V (75 IHF) FM STEREO 70 dB (IHF-A) FM MONO 76 dB (IHF-

9、A) FM STEREO 0.3% (1 kHz) FM MONO 0.2% (1 kHz) 45 dB at 1 kHz AM Tuning frequency range: Usable sensitivity: S/N ratio: THD: 530-1710 kHz 30 V 40 dB 0.7% Input sensitivity, output level and impedance: Component video frequency response: 1.0 Vp-p/75 (component and S-Video Y) 0.7 Vp-p/75 (component PB

10、/CB, PR/CR) 0.28 Vp-p/75 (S-Video C) 1.0 Vp-p/75 (composite) 5 Hz-50 MHz Power output: All channels: Dynamic power: THD (total harmonic distortion): Damping factor: Input sensitivity and impedance: Output level and impedance: Frequency response: Tone control: S/N ratio (Direct mode): Speaker impedan

11、ce: 130 W (8 , 20 Hz-20 kHz, FTC) 2 x 260 W (3 , front) 2 x 200 W (4 , front) 2 x 150 W (8 , front) 0.08% (rated power) 60 (front, 1 kHz, 8 ) 200 mV/47 k (LINE) 200 mV/470 (REC OUT) 10 Hz-100 kHz/+1 dB, -3 dB (Direct mode) 12 dB, 50 Hz (BASS) 12 dB, 20,000 Hz (TREBLE) 100 dB (CD, IHF-A) 8 RadioFans.

12、CN 收音机爱 好者资料库 SERVICE PROCEDURES HT-R820THX 1. Replacing the fuses 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 symbol

13、e 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. 3. To initialize the unit This device employs a microprocessor to perform various functions and operations. If interference

14、 generated by an external power supply, radio wave, or other electrical sauce results in accident which causes the specified operations and functions to operate abnormally. To perform a result, please follow the procedure below. 1. Press and the hold down the VIDEO 1 button, then press the STANDBY/O

15、N button when the unit is Power On. 2. After Clear is displayed, the preset memory and each mode stored in the memory, are initialized and will return to the factory settings. REF NO.PART NO.DESCRIPTION F6901, F6902 F6901, F6902 F6901 or, F6902 or F901 F901 or F903 F903 or 252199 252100 252307 25219

16、8 252261 252164 252258 10A-UL 10A-EAK 10A-TL250V 8A-UL 8A-T/UL-ST2 5A-UL/T-237 5A-T/UL-ST2 2. Safety-check out After correcting the original service problem perform the following safety check before releasing the set to the customer Connect the insulating-resistance tester between the plug of power

17、supply cord and terminal GND on the back panel. Specifications: More than 10Mohm at 500V The HT-R820THX uses a battery-less memory backup system in order to retain radio presets and other settings when its unplugged or in the case of a power failure. Although no batteries are required, the HT-R820TH

18、X must be plugged into an AC outlet in order to charge the backup system. Once it has been charged, the HT-R820THX will retain the settings for several weeks, although this depends on the environment and will be shorter in humid climates. 5. Memory backup REMARKS Main microprocessor Q7008 only. 1. P

19、ress and the hold down the DISPLAY button , then press the STANDBY/ON button when the unit is Power ON. Version is displayed on FL display only for 3 seconds. 2. Press the STANDBY/ON button to Power Off. 4. To check version of microprocessor Ver. 075 (04809a) NCDG-8230 25138230B GND 232RXD 232TXD NC

20、 FVCC P7701 Q7008 Main microprocessor 6. Changing the AM band step 1. Necessary to change as follows. R7003 Change to 10 kohms. Refer to R7004 Change to 10 kohms. Refer to 2. To select. Press and hold down the TUNER button , then press the MEMORY button. Component side NADG-8230 (Pre-amplifier PC bo

21、ard) R7004 R7003 OPERATION CHECK-1 DC VOLTAGE DETECTION PROTECTORS HT-R820THX 1. Set the unit to test mode Test-4-00 . 1-1. Press and the hold down the CD button , then press the STANDBY/ON button when the unit is Power On. 1-2. Press the VIDEO 3 button, while the Test - _ is shown. Unit will be in

22、the state of Test-4-00 . 2. Repeat and press SPEAKERS B to the Test-4-20 is shown. 3. Check that the Protect OK is shown and speaker relays are turn Off. If a circuit is failure, the Protect NG is shown. 4. Check about the Test 4-21 to Test 4-31 one by one. Refer to about the operation method. 5. Pr

23、ess the STANDBY/ON to power Off. (Exit the test mode.) In test mode Test 4-20 to Test 4-31 , DC voltage is outputted from DSP IC a pre-amplifier section, and it is inputted into a power amplifier circuit. Therefore an external input is unnecessary in check. Dont connect speakers or any load. Dont sh

24、ort speaker terminals. Test - _ Test - 4-00 Test - 4-20 Protect OK Protect NG Test - 4-20 Press SPEAKER B button. Test - 4-21 Press SPEAKER B button. Test - 4-22 Operation method Press on SPEAKER B button - Next step Press on SPEAKER A button - Retarn Test - 4-31 Press SPEAKER A button. Press SPEAKE

25、R A button. Details of TEST MODE 4-20 to 4-31 TEST MODE 4-20 4-21 4-22 4-23 4-24 4-25 4-26 4-27 4-28 4-29 4-30 4-31 DSP output ch. FL FR C SL SR SB FL FR C SL SR SB DSP output voltage +DC - DC +DC +DC - DC +DC - DC +DC - DC +DC - DC +DC MASTER VOLUME = MAX. blinks OPERATION CHECK-2 CURRENT DETECTION

26、 PROTECTORS HT-R820THX 1. Set the unit to test mode Test-4-00 . 1-1. Press and the hold down the CD button , then press the STANDBY/ON button when the unit is Power On. 1-2. Press the VIDEO 3 button, while the Test - _ is shown. Unit will be in the state of Test-4-00 . 2. Repeat and press SPEAKERS B

27、 to the Test-4-32 is shown. 3. Connect the road resistor 3 ohms to the speaker terminal. 4. Check that the Protect is not shown. 5. Connect the road resistor 1.5 ohms to the speaker terminal. 6. Check that the Protect is shown, and speaker relays are turn off. 7. Check about the FL, FR, C, SL, SR an

28、d SB channel one by one. 8. Press the STANDBY/ON to power Off. (Exit the test mode) In test mode Test 4-32 , the pulse waveform is outputted from DSP IC on the pre-amplifier section, and it is inputted into a power amplifier circuit. Refer to . Therefore an external input is unnecessary in check. Do

29、nt connect speakers or any load. Dont short speaker terminals. Dont check two or more channels simultaneously. Test - _ Test - 4-00 Test - 4-32 Protect The output waveform from DSP IC in the test mode 4-32. Details of TEST MODE 4-32 TEST MODE 4-32 DSP output ch. ALL DSP output voltage Max. MASTER VO

30、LUME = 54 2 ms 2 ms 20 ms blinks OPERATION CHECK-3 OUTPUT LEVEL 16 G3 G14 G13 G12 G11 G9 G8 G7 G6 G5 G4 G16 G15 G10 G2 G1 SYSOUT IRF VAJ VBJ STBYLED SYSIN SBMLDY SBMDI SBMDO SBMCLK SBMRST K3 K1 K2 K0 K0 K1 K2 K3 GND KEY0 HPDET GND HPL HPE HPR SYSIN HPDET SBMLDY SBMDI SBMDO SBMCLK SBMRST -VP +5.6S FA

31、C2 FAC1 HPR HPE HPL GND GND NAETC-8233 NASW-8232 NADIS-8231 TO NAETC-8238TO NADG-8230 U03 MASTER VOLUME U04 R7581 100k X 14 NC=No mount of parts. NOTE THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY REPLACE ONLY WITH PART NUMBER SPECIFIED VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO

32、 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 u F/WV. ALL CAPACITORS ARE IN pF/50WV UNLESS

33、 OTHERWISE NOTED. EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED. THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS. EX) PRINTING SIDE CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT. IS DC VOLTAGE, AT NO INPUT SIGNAL. R7582 NC 100K

34、 X 13 NC NC U02DISPLAY PC BOARD FL TUBE NC NC NC NC STEREO HEADPHONE TERMINAL PC BOARD OPERATION SWITCH PC BOARD A 1 2 3 4 5 BCDEFGH SCHEMATIC DIAGRAMS-2 DISPLAY SECTION HT-R820THXHT-R820THX P7502A F2 F2 NP NP P35 P34 P33 P32 P31 P30 P29 P28 P27 P26 P25 P24 P23 P22 P21 P20 P19 P18 P17 P16 P15 P14 P1

35、3 P12 P11 P10 P9 P8 P7 P6 P5 P4 P3 P2 P1 16G 15G 14G 13G 12G 11G 10G 9G 8G 7G 6G 5G 4G 3G 2G 1G NP NP F1 F1 Q7501HNA-16MM39T 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 JL7501B

36、 JL7501A JL7502A JL7502B S7638 FM MODE S7637 CD S7614 TONE S7627 MEMORY S7625 DIGITAL INPUT S7624 DISPLAY S7626 - S7647 SET UP S7616 SP B S7617 SP A S7615 STANDBY S7645 TUNING S7643 ENTER S7642 PRESET S7646 RETURN S7635 TAPE S7634 VIDEO3 S7633 VIDEO2 S7632 VIDEO1 S7631 DVD ADJUST S7636 TUNER S7623 L

37、ISTEN MODE S7622 LISTEN MODE S7621 MULTI CH S7613 TONE- S7612 TONE+ S7611 P7503A P999 NC S7501 E7501 Q7504 RN2403 KRA103S U7501 PIC-3704TH2 L7505 220K NCH1477Z L7504 220K NCH1477Z Q7502 MPD780232GC-096-8BT 21:ANI1 21 22:ANI0 22 41:P45/FIP37 41 42:P44/FIP36 42 43:P43/FIP35 43 61:FIP19 61 ANI220 ANI31

38、9 AVDD24 AVSS18 FIP0 80 FIP179 FIP1070 FIP1169 FIP1268 FIP1367 FIP1466 FIP1565 FIP1664 FIP1763 FIP1862 FIP278 FIP20 58 FIP21 57 FIP22 56 FIP23 55 FIP377 FIP476 FIP575 FIP674 FIP773 FIP872 FIP971 IC5 P01/INTP116 P02/TI17 P20/SCK314 P21/SO313 P2212 P2311 P24/BUSY10 P25SO19 P26/SI18 P27/SCK17P30/FIP24

39、54 P31/FIP25 53 P32/FIP26 52 P33/FIP27 51 P34/FIP28 50 P35/FIP29 49 P36/FIP30 48 P37/FIP31 47 P40/FIP32 46 P41/FIP33 45 P42/FIP34 44 P46/FIP3840 P47/FIP3939 P50/FIP4038 P51/FIP4137 P52/FIP4236 P53/FIP4335 P54/FIP4434 P55/FIP4533 P56/FIP4632 P57/FIP4731 P60/FIP4830 P61/FIP4929 P62/FIP5028 P63/FIP5127

40、 P64/FIP5226 POO/INTP015 VDD025 VDD11 VDD2 59 VLOAD60 VSS023 VSS12 X13 X24 RESET6 P7501 PHONES R76373.9KR76362.2K R7613 560 R76262.2K R7625 1.2K R7624 820 R7623560 R76462.2K R7513 R7531 220 R7616 1.2K R7615 820 R75241K R7617 2.2K R7641330R76451.2KR7644820R7643560R7642470 R7631330R7632470 R7633560R76

41、34820R76351.2K R7621 330 R7622 470 R7612 470 R7611 330 Q7507 Q7506 RN1402 KRC102S X7501 CST5.00MGW Q7503 2SC2712 KTC3875 R7580 10K X 15 D7504 D7505 STANDBY D7501 UDZ8.2B D7502 UDZ5.1B D7507 1SS352 D7503 1SS352 C7521 220/6.3 C7514 100/6.3 C7502 33/50 C7523102J C7522101J C7511102J C7513104Z C7515 104Z

42、 C7516 104Z C7517 102J C7519 102J C7520 102J C7518 102J C7508102J C7509102J C7506 104Z C7501104Z C7503104Z C7507 104Z C7505 473Z C7504 473Z C7510102J R750447k R7514 L7503 L7502 L7501 R751210K R995 NC R996NC R997NC R998 NC R999 10K R751610K R7519 100K R7518 100K R751510K R75074.7K R75171K R7503 10K R

43、75202.7K R75212.7K R7501220 R7502220 R75064.7K R7532 10K R752710K R752610K R75301K R7529560 R7528560 R75084.7K R75094.7K R75101K R75111K R75222.7K R75232.7K R7505 220K G11 G1 G16 P1 G2 G3 G4 G5 G6 G7 G8 G9 G10 G12 G13 G14 G15 P28 P32 P35 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 P1

44、9 P20 P21 P22 P23 P24 P25 P26 P27 P29 P30 P33 P34 P31 P35 P34 P33 P32 P31 P30 P29 P28 P27 P26 P25 P24 P23 P22 P21 P20 P19 P18 P16 P15 P14 P13 P12 P10 P9 P8 P7 P6 P5 P4 P3 P2 P1 P11 P17 G1;16 G3 G14 G13 G12 G11 G9 G8 G7 G6 G5 G4 G16 G15 G10 G2 G1 SYSOUT IRF VAJ VBJ STBYLED SYSIN SBMLDY SBMDI SBMDO SB

45、MCLK SBMRST K3 K1 K2 K0 K0 K1 K2 K3 GND KEY0 HPDET GND HPL HPE HPR SYSIN HPDET SBMLDY SBMDI SBMDO SBMCLK SBMRST -VP +5.6S FAC2 FAC1 HPR HPE HPL GND GND NAETC-8233 NASW-8232 NADIS-8231 TO NAETC-8238TO NADG-8230 U03 MASTER VOLUME U04 R7581 100k X 14 NC=No mount of parts. NOTE THE COMPONENTS IDENTIFIED

46、 BY MARK ARE CRITICAL FOR SAFETY REPLACE ONLY WITH PART NUMBER SPECIFIED 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

47、EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED. ELECTROLYTIC CAPACITORS ( ) ARE IN u F/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 1/4WATTS UNLESS OTHERWISE NOTED. THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF

48、 THE PARTS. EX) PRINTING SIDE CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT. IS DC VOLTAGE, AT NO INPUT SIGNAL. R7582 NC 100K X 13 NC NC U02DISPLAY PC BOARD FL TUBE NC NC NC NC STEREO HEADPHONE TERMINAL PC BOARD OPERATION SWITCH PC BOARD A 1 2 3 4 5 BCDEFGH SCHEMATIC DIAGRAMS-3 DRIVER AMPLIFIER SECTI

49、ON HT-R820THXHT-R820THX A 1 2 3 4 5 BCDEFGH U06 Q5012 Q5002 Q5042 Q5052 Q5011Q5001 Q5041 Q5051 Q5010Q5000 Q5040 Q5050 Q5013Q5003 Q5043 Q5053 Q5014Q5004 Q5044 Q5054 Q5015Q5005 Q5045 Q5055 Q5032 Q5031 Q5030Q5033 Q5034 Q5035 R5012 56K R5002 1K R5022 330 R5062 1.2K R5162 150(1/4W) R5172 150 (1/4W) R5032 56K R5072 NC R5112 1K R5092 100K R5052 4.7K R5082 470 R5102 100K R5182 1