Onkyo-TXSR8250-avr-sm维修电路原理图.pdf

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1、TX-SR502/E/8250/HT-R520 SERVICE MANUALSERVICE MANUAL AV RECEIVER TX-SR502 Black, Golden and Silver models MODEL TX-SR502 TX-SR502E TX-SR8250 HT-R520 120V AC, 60Hz 230-240V AC, 50Hz 120V/220-230V AC, 50/60Hz 220-230V AC, 50/60Hz MDD, MDC MPA, MPT MWT MGK, MGR, MGQ TX-SR502E Black and Silver models 23

2、0-240V AC, 50HzMPP HT-R520 Black and Silver models 120V AC, 60HzMDD, MDC TX-SR8250 Golden model 220-230V AC, 50/60HzMGR Ref. No. 3797 042004 STANDBY/ON PHONES STANDBY DISPLAYTONETUNING MODEDIGITAL INPUT LISTENING MODESTEREOMEMORY RETURNSETUP VIDEO 2TAPETUNERC DVIDEO 3DVDVIDEO 1 VCR MULTI CH SPEAKERS

3、 BA MASTER VOLUME ENTER S VIDEOVIDEOAUDIOLR VIDEO 3INPUT CLEAR TUNING PRESET 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 CINE FLTR LEVEL-LEVEL+CH SELTEST TONE DSPDIRECT STEREOALL STSURR L NIGHT T O P M E N U M E N U VOL + - CDR S

4、AT AMP+ _ TVVCRCABLE DVDCDMD DISC 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-567M REC LAST M REMOTE MODE OPEN/CLOSEVIDEO OFF DSP American model RC-567M Others RC-569M SAFETY-RELATED COMPONEN

5、T 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 EXP

6、OSED 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 SPECIFICATIONS-1 TX-SR502/502E/8250 TX-SR502/E/8250/HT-R520 Amplifier Section Power output: 75 W (8 , 20 Hz-20 kHz, FTC) All channels: 105 W (6 , 1 kHz, DIN) 130 W (6 ,

7、 1 kHz, EIAJ) Dynamic power: 2 x 180 W (3 , front) 2 x 150 W (4 , front) 2 x 95 W (8 , front) THD (total harmonic distortion): 0.08% (rated power) Damping factor: 60 (front, 1 kHz, 8 ) Input sensitivity and impedance: 200 mV/47 k (LINE) Output level and impedance: 200 mV/470 (REC OUT) Frequency resp

8、onse: 10 Hz100 kHz/+1 dB, 3 dB (Direct mode) Tone control: +12 dB, -12 dB, 50 Hz (BASS) +12 dB, -12 dB, 20,000 Hz (TREBLE) S/N ratio (Direct mode): 100 dB (CD, IHF-A) Speaker impedance: 6 General Power supply: American model: AC 120 V, 60 Hz Worldwide model: AC 220230 V and 120 V switchable 50/60 Hz

9、 Other models: AC 230240 V, 50 Hz AC 220230 V, 50 Hz Power consumption: American model: 4.6 A Other models: 370 W Standby power consumption: 2.5 W Dimensions (W x H x D): 17-1/8 x 5-7/8 x 14-13/16 (435 x 150 x 376 mm) Weight: American, European and Australian models: 22.5 lbs. (10.2 kg) Asian model:

10、 24.3 lbs. (11.0 kg) Video Section Input sensitivity, output level and impedance: 1.0 Vp-p/75 (component and S-Video Y) 0.7 Vp-p/75 (component PB/CB, PR/CR) 0.28 Vp-p/75 (S-Video C) 1.0 Vp-p/75 (composite) Component video frequency response: 5 Hz50 MHz Tuner Section FM Tuning frequency range: 87.510

11、8.0 MHz Usable sensitivity: FM STEREO 17.2 dBf, 2.0 V (75 IHF) FM MONO 11.2 dBf, 1.0 V (75 IHF) S/N ratio: FM STEREO 70 dB (IHF-A) FM MONO 76 dB (IHF-A) THD: FM STEREO 0.3% (1 kHz) FM MONO 0.2% (1 kHz) FM stereo separation: 45 dB at 1 kHz Video Inputs Component video inputs: 2 (DVD, Video 1/2/3) S-V

12、ideo inputs: 4 (DVD, Video 13) Video inputs: 4 (DVD, Video 13) Video Outputs Component video outputs: 1 (Component Video Out) S-Video outputs: 2 (Video 1 Out, Monitor Out) Video outputs: 2 (Video 1 Out, Monitor Out) Audio Inputs Digital inputs: 4 (Optical 13, Coaxial) Analog inputs: 6 (CD, Tape, DVD

13、, Video 13) Multichannel analog inputs: 5.1 ch (Front L/R, Center, Surround L/R, Subwoofer) Audio Outputs Analog outputs: 2 (Tape Out, Video 1 Out) Subwoofer pre out: 1 Speaker outputs: 6+2 Phones: 1 Specifications and features are subject to change without notice. AM Tuning frequency range: 5301700

14、 kHz (American model) 5221611 kHz (Other models) Usable sensitivity: 30 V S/N ratio: 40 dB THD: 0.7% RadioFans.CN 收音机爱 好者资料库 SPECIFICATIONS-2 HT-R520 TX-SR502/E/8250/HT-R520 Amplifier Section Video Section Tuner Section FM AM General Video Inputs Video Outputs Audio Inputs Audio Outputs Specificatio

15、ns and features are subject to change without notice. Power output: All channels:130 W(8 , 20 Hz-20 kHz, FTC) Dynamic power: THD (total harmonic distortion): 0.08% (rated power) Damping factor: Input sensitivity and impedance: 200 mV/47 k (LINE) Output level and impedance: 200 mV/470 (REC OUT) Frequ

16、ency response:10 Hz-100 kHz/+1 dB, -3 dB (Direct mode) Tone control:12 dB, 50 Hz (BASS) 12 dB, 20,000 Hz (TREBLE) S/N ratio (Direct mode):100 dB (CD, IHF-A) Speaker impedance:6 Input sensitivity, output level and impedance: 1.0 Vp-p/75 (component and S-VideoY) Component video frequency response: 5 H

17、z-50 MHz 87.5-108.0 MHz Usable sensitivity:FM STEREO 17.2 dBf, 2.0 V (75 IHF) FM MONO 11.2 dBf, 1.0 V (75 IHF) S/N ratio:FM STEREO 70 dB (IHF-A) FM MONO 76 dB (IHF-A) THD:FM STEREO 0.3% (1 kHz) FM MONO 0.2% (1 kHz) FM stereo separation:45 dB at 1 kHz Tuning frequency range:530-1700 kHz Usable sensit

18、ivity:30 V S/N ratio:40 dB THD:0.7% Power supply: Power consumption:4.6 A Standby power consumption: 2.5 W Dimensions (W x H x D): 17-1/8 x 5-7/8 x 14-13/16 (435 x 150 x 376 mm) Weight:22.5 lbs. (10.2 kg) Component video inputs: S-Video inputs: Video inputs: Component video outputs: S-Video outputs:

19、 Video outputs: Digital inputs:4 (Optical 1-3, Coaxial) Analog inputs: Multichannel analog inputs: 5.1 ch (Front L/R, Center, Surround L/R, Subwoofer) Analog outputs: Subwoofer pre out:1 Speaker outputs:6+2 Phones:1 2 x 260 W (3 , front) 2 x 200 W (4 , front) 2 x 150 W (8 , front) 60 (front, 1 kHz,

20、8 ) 0.7 Vp-p/75 (component PB/CB, PR/CR) 0.28 Vp-p/75 (S-Video C) 1.0 Vp-p/75 (composite) Tuning frequency range: AC 120 V, 60 Hz 2 (DVD, Video 1/2/3) 4 (DVD, Video 1-3) 4 (DVD, Video 1-3) 1 (Component Video Out) 2 (Video 1 Out, Monitor Out) 2 (Video 1 Out, Monitor Out) 2 (Tape Out, Video 1 Out) 6 (

21、CD, Tape, DVD, Video 1-3) SERVICE PROCEDURES-1 TX-SR502/E/8250/HT-R520 L R ANTENNA FM 75 AM 120 V VOLTAGE SELECTOR 220-230 V SWITCHED 100W MAX. AC OUTLET AV RECEIVER MODEL NO. TX-SR502 OPTICALCOAXIAL 123 DIGITAL IN VIDEO 1/2/3IN R L SURROUND SPEAKERS CENTER SPEAKER SURROUND BACK SPEAKER REMOTE CONTR

22、OL INININ ININININFRONTSURRCENTER SUB WOOFER OUT OUTOUT VIDEO 2VIDEO 1DVDMONITOR OUT VIDEO S VIDEO DVD TAPECD L R VIDEO 2VIDEO 1 SUBWOOFER PRE OUT DVD IN COMPONENT VIDEO Y PB PR OUT L R R L FRONT SPEAKERS A R L FRONT SPEAKERS B Class 2 Wiring 120V VOLTAGE SELECTOR 220-230V 1. Replacing the fuses Thi

23、s 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 symbole indique que le fusible utilise est e lent. Pour une protection perma

24、nente, nutiliser que des fusibles de meme type. Ce demier est indique la qu le present symbol est apposre. 3. To initialize the unit NOTE : USA model only : Canadian model only : World wide model only : Korean model only for 220V : Chinese model only for 220V : European model only for 230V : Austral

25、ian model only for230V : Asian model only for 230V This device employs a microprocessor to perform various functions and operations. If interference generated by an external power supply, radio wave, or other electrical sauce results in accident which causes the specified operations and functions to

26、 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/ON 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 t

27、o the factory settings. REF NO.PART NO.DESCRIPTIONNOTES F6901, F6902 F6901, F6902 F6901 or, F6902 or F901 F901 or F902 F902 or F902 or F903 F903 or F903 F903 or F903 or 252199 252100 252307 252166 252260 252076 252242 252276 252164 252258 252075 252241 252275 10A-UL 10A-EAK FUSE 10A-TL250V 6.3A-UL/T

28、-237 6.3A-T/UL-ST2 3.15A-SE-EAK FUSE 3.15A-SE-TL250V 3.15A-SE-TL250V 5A-UL/T-237 5A-T/UL-ST2 2.5A-SE-EAK FUSE 2.5A-SE-TL250V 2.5A-SE-TL250V DC, DD GK, GQ, GR, PA, PP, PT, WT GK, GQ, GR, PA, PP, PT, WT DC, DD, GR, WT DC, DD, GR, WT GK, GQ, GR, PA, PP, PT, WT GK, GQ, GR, PA, PP, PT, WT GK, GQ, GR, PA,

29、 PP, PT, WT DC, DD DC, DD GK, GQ, GR, PA, PP, PT, WT GK, GQ, GR, PA, PP, PT, WT GK, GQ, GR, PA, PP, PT, WT 2. Safety-check out (Only U.S.A. model) After correcting the original service problem perform the following safety check before releasing the set to the customer Connect the insulating-resistan

30、ce tester between the plug of power supply cord and terminal GND on the back panel. Specifications: More than 10Mohm at 500V The TX-SR502/TX-SR502E 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. Altho

31、ugh no batteries are required, the TX-SR502/TX-SR502E must be plugged into an AC outlet in order to charge the backup system. (On non-American models, the TX-SR502/ TX-SR502Es POWER switch must be set to ON in order to charge the backup system.) Once it has been charged, the TX-SR502/TX-SR502E will

32、retain the settings for several weeks, although this depends on the environment and will be shorter in humid climates. 5. Memory backup 6. Setting the voltage selector (Worldwide models only) The Worldwide model has a voltage selector for compatibility with power systems around the world. Before you

33、 plug in this model, make sure that the voltage selector is set to the correct voltage for your area. If it isnt, use a small screwdriver to set it as appropriate. For example, if the voltage in your area is 120 volts, set the selector to 120V. If its between 220 and 230 volts, set it to 220-230V. M

34、ain microprocessor Q7008. 1. Press 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. Sub microprocessor Q7502. Check is impossible. (Unnecessary) 4. Ho

35、w to check version of microprocessor? Version 04215A ex. SERVICE PROCEDURES-2 TX-SR502/E/8250/HT-R520 NCDG-8230 25138230B GND 232RXD 232TXD NC FVCC C7002 C7003 D7001 P7701 Q7008 Q7008 R7001 R7002 R7003 R7004 R7005 R7008 R7009 R7010 R7011 R7012 R7014 R7015 R7016 R7017 R7018 R7019 R7020 R7120 Main mic

36、roprocessor 7. Changing the AM band step 1. Worldwide model (MWT). You can select AM band step 9kHz or 10kHz by the following operation. How to select? Press and hold down the TUNER , then press the MEMORY. 2. Except worldwide model. 2-1. Necessary to change as follows. R7003 Change to 10 kohms. (Re

37、fer to Fig-1) R7004 Change to 10 kohms. (Refer to Fig-1) 2-2. How to select? Press and hold down the TUNER , then press the MEMORY. Fig-1 NADG-8230 (PREAMPLIFIER PC BOARD) component side PANEL VIEWS-1 FRONT PANELS-1 TX-SR502/E/8250/HT-R520 STANDBY/ON PHONES STANDBY DISPLAYTONETUNING MODEDIGITAL INPU

38、T LISTENING MODESTEREOMEMORY RETURNSETUP VIDEO 2TAPETUNERC DVIDEO 3DVDVIDEO 1 VCR MULTI CH SPEAKERS BA MASTER VOLUME ENTER S VIDEOVIDEOAUDIOLR VIDEO 3INPUT CLEAR TUNING PRESET STANDBY/ON POWER STANDBY DISPLAYTONE PURE AUDIO DIGITAL INPUT LISTENING MODEPURE AUDIO OFFON SPEAKERS BA 235789 1011121314 2

39、4232221201918171615 146 Other Models American Models POWER switch The American model doesnt have this switch. This is the main power switch. When set to OFF, the is completely shutdown. When set to ON, the unit is inStandby mode and the STANDBY indicator lights up. Dont turn on the power until youve

40、 completed, and double-checked all connections. 1 STANDBY/ON button This button is used to set the to On or Standby. For models with a POWER switch, this button has no effect unless the POWER switch is set to ON. 2 STANDBY indicator This indicator lights up when the is in Standby mode, and it flashe

41、s while a signal is being received from the remote controller. 3 PURE AUDIO indicator The American model doesnt have this indicator. This indicator lights up when the Pure Audio listening mode is selected. (No video signals are output in this mode.) 4 STEREO button This button is used to select the

42、Stereo listening mode. (American model only) 5 PURE AUDIO button The American model doesnt have this button. This button is used to select the Pure Audio listening mode. 6 LISTENING MODE buttons These buttons are used to select the listening modes. 7 DISPLAY button This button is used to display var

43、ious information about the currently selected source. 8 DIGITAL INPUT button This button is used to assign the digital inputs and to specify the format of digital input signals. 9 Display10 PANEL VIEWS-2 FRONT PANELS-2 TX-SR502/E/8250/HT-R520 Remote control sensor This sensor receives control signal

44、s from the remote controller. TUNING buttons These buttons are used to tune into radio stations. PRESET buttons These buttons are used to select radio presets. 11 Arrow buttons These buttons are used to select and adjust settings. 12 ENTER button This button is used to confirm settings. 13 MASTER VO

45、LUME control This control is used to set the volume of the unit. 14 SPEAKER A 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 SBMRS

46、T -VP +5.6S FAC2 FAC1 HPR HPE HPL GND GND NAETC-8233 NASW-8232 NADIS-8231 TO NAETC-8238TO NADG-8230 U02 DISPLAY PC BOARD U03 OPERATION SWITCH PC BOARD MASTER VOLUME U04 HEAD PHONE TERMINAL PC BOARD R7581 100k X 14 S7611 MDD, MDC TYPE - STEREO EXCEPT MDD, MDC TYPE - PURE AUDIO NC=No mount of parts. N

47、OTE THE COMPONENTS IDENTIFIED 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 OTH

48、ERWISE NOTED. ALL DIODES ARE 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 B

49、OARD 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 X 13 NC NC SCHEMATIC DIAGRAMS-2 DISPLAY SECTION TX-SR502/E/8250/HT-R520TX-SR502/E/8250/HT-R520 A 1 2 3 4 5 BCDEFGH 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 P13 P12 P11 P10 P9 P8 P7 P6 P5 P4 P