Pioneer-VSX94TXH-avr-sm 维修电路原理图.pdf

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1、ORDER NO.PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, JapanPIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, BelgiumPIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Sin

2、gapore 159936 PIONEER CORPORATION 2007VSX-94TXHMASTERVOLUMESTANDBY/ONINPUTSELECTORPHASECONTROLPHASECONTROLAUTO SURR/STREAM DIRECTMCACCPOSITIONADVANCEDMCACCDIGITAL VIDEOHDMISRELACDIGITAL PRECISIONPROCESSINGHOMETHXSTANDARDSURROUNDADVANCEDSURROUNDVSX-94TXHRRV3629AUDIO/VIDEO MULTI-CHANNEL RECEIVERVSX-94

3、TXHVSX-92TXHTHIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).ModelTypePower RequirementRemarksVSX-94TXHKUXJ/CAAC 120 VVSX-92TXHKUXJ/CAAC 120 VFor details, refer to Important Check Points for good servicing. T-FZV JULY 2007 printed in JapanRadioFans.CN 收音机爱 好者资料库VSX-94TXH212341234CDFAB

4、ESAFETY INFORMATION1. SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician.LEAKAGE CURRENT CHECK Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester such as Simpso

5、n Model 229-2 or equivalent between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60 Hz outlet and turn the AC power switch on. Any current measur

6、ed must not exceed 0.5 mA.ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER.2. PRODUCT SAFETY NOTICE Many electrical and mechanical parts in the appliance have special safety related c

7、haracteristics. These are often not evident from visual inspection nor the protection afforded by them necessarily can be obtained by using replacement components rated for voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this Service Manual.

8、 Electrical components having such features are identified by marking with a on the schematics and on the parts list in this Service Manual.The use of a substitute replacement component which does not have the same safety characteristics as the PIONEER recommended replacement one, shown in the parts

9、 list in this Service Manual, may create shock, fire, or other hazards. Product Safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current PIONEER Service Manual. A subscription to, or additional copies of, PIONEER Se

10、rvice Manual may be obtained at a nominal charge from PIONEER. LeakagecurrenttesterReading shouldnot be above0.5 mADeviceundertestTest allexposed metalsurfacesAlso test withplug reversed(Using AC adapterplug as required)EarthgroundAC Leakage Test(FOR USA MODEL ONLY)WARNINGThis product contains lead

11、in solder and certain electrical parts contain chemicals which are known to the state of California to cause cancer, birth defects or other reproductive harm. Health & Safety Code Section 25249.6 - Proposition 65NOTICE(FOR CANADIAN MODEL ONLY)Fuse symbols (fast operating fuse) and/or (slow operating

12、 fuse) on PCB indicate that replacement parts must be of identical designation.REMARQUE(POUR MODLE CANADIEN SEULEMENT)Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les pices de remplacement doivent avoir la mme dsignation.This service manual is i

13、ntended for qualified service technicians ; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual.Improperly performed repairs can a

14、dversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician.RadioFans.CN 收音机爱 好者资料库VSX-94TXH35678567

15、8CDFABEImportant Check Points for Good ServicingIn this manual, procedures that must be performed during repairs are marked with the below symbol.Please be sure to confirm and follow these procedures.1. Product safetyPlease conform to product regulations (such as safety and radiation regulations), a

16、nd maintain a safe servicing environment by following the safety instructions described in this manual.1 Use specified parts for repair.Use genuine parts. Be sure to use important parts for safety.2 Do not perform modifications without proper instructions.Please follow the specified safety methods w

17、hen modification(addition/change of parts) is required due to interferences such as radio/TV interference and foreign noise.3 Make sure the soldering of repaired locations is properly performed.When you solder while repairing, please be sure that there are no cold solder and other debris.Soldering s

18、hould be finished with the proper quantity. (Refer to the example)4 Make sure the screws are tightly fastened.Please be sure that all screws are fastened, and that there are no loose screws.5 Make sure each connectors are correctly inserted.Please be sure that all connectors are inserted, and that t

19、here are no imperfect insertion.6 Make sure the wiring cables are set to their original state.Please replace the wiring and cables to the original state after repairs.In addition, be sure that there are no pinched wires, etc.7 Make sure screws and soldering scraps do not remain inside the product.Pl

20、ease check that neither solder debris nor screws remain inside the product.8 There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.Damaged power cords may lead to fire accidents, so please be sure that there are no damages.If you find a damaged power cord, p

21、lease exchange it with a suitable one.9 There should be no spark traces or similar marks on the power plug.When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure connections and suitable usage. Please exchange the power cord if necessa

22、ry.a Safe environment should be secured during servicing.When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries. Please pay attention to your surroundings and repair safely. 2. AdjustmentsTo keep the original performance

23、 of the products, optimum adjustments and confirmation of characteristics within specification.Adjustments should be performed in accordance with the procedures/instructions described in this manual.4. CleaningFor parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirr

24、ors used in projection monitors, proper cleaning should be performed to restore their performances.3. Lubricants, Glues, and Replacement partsUse grease and adhesives that are equal to the specified substance. Make sure the proper amount is applied.5. Shipping mode and Shipping screwsTo protect prod

25、ucts from damages or failures during transit, the shipping mode should be set or the shipping screws should be installed before shipment. Please be sure to follow this method especially if it is specified in this manual.VSX-94TXH412341234CDFABECONTENTS SAFETY INFORMATION. 21. SERVICE PRECAUTIONS. 61

26、.1 NOTES ON SOLDERING. 62. SPECIFICATIONS. 72.1 ACCESSORIES. 72.2 SPECIFICATIONS . 82.3 PANEL FACILITIES. 93. BASIC ITEMS FOR SERVICE. 153.1 CHECK POINTS AFTER SERVICING. 153.2 PCB LOCATIONS. 163.3 JIGS LIST . 184. BLOCK DIAGRAM. 204.1 OVERALL WIRING DIAGRAM . 204.2 AUDIO BLOCK DIAGRAM. 224.3 COMPOS

27、ITE V BLOCK DIAGRAM. 244.4 S-VIDEO BLOCK DIAGRAM . 254.5 COMPONENT & VOL BLOCK DIAGRAM. 264.6 DSP BLOCK DIAGRAM. 274.7 HDMI & DLNA BLOCK DIAGRAM (VSX-94TXH). 284.8 HDMI & DVC BLOCK DIAGRAM. 294.9 MICROCOMPUTER BLOCK DIAGRAM. 305. DIAGNOSIS. 315.1 DIAGNOSIS FLOWCHART . 315.2 CIRCUIT DESCRIPTION. 686.

28、 SERVICE MODE. 746.1 SERVICE MODE. 747. DISASSEMBLY . 798. EACH SETTING AND ADJUSTMENT . 868.1 ADJUSTMENT. 868.2 HOW TO UPDATE THE DSP FLASH ROM BY PLAYING BACK A CD. 868.3 HOW TO UPDATE THE FLASH ROMS FOR VARIOUS MICROCOMPUTERS. 899. EXPLODED VIEWS AND PARTS LIST. 909.1 PACKING. 909.2 EXTERIOR SECT

29、ION. 929.3 CHASSIS SECTION . 949.4 REAR PANEL SECTION. 969.5 POWER AMP SECTION. 989.6 FRONT PANEL SECTION. 10010. SCHEMATIC DIAGRAM. 10210.1 AUDIO & MULTI CH IN ASSY . 10210.2 V-AUDIO ASSY. 10410.3 FRONT-IN and HEADPHONE ASSYS . 10610.4 BRIDGE1, BRIDGE2, TRANS SIDE and BRIDGE3 ASSYS. 10810.5 COMPOSI

30、TE V ASSY .11010.6 S-VIDEO ASSY.11210.7 COMPONENT & VOL ASSY (1/4).11410.8 COMPONENT & VOL ASSY (2/4).11610.9 COMPONENT & VOL ASSY (3/4).11810.10 COMPONENT & VOL ASSY (4/4). 12010.11 DIGITAL MOTHER ASSY (1/7). 12210.12 DIGITAL MOTHER ASSY (2/7). 12410.13 DIGITAL MOTHER ASSY (3/7). 12610.14 DIGITAL M

31、OTHER ASSY (4/7). 12810.15 DIGITAL MOTHER ASSY (5/7). 13010.16 DIGITAL MOTHER ASSY (6/7). 13210.17 DIGITAL MOTHER ASSY (7/7). 13410.18 DSP ASSY (1/3). 13610.19 DSP ASSY (2/3). 13810.20 DSP ASSY (3/3). 14010.21 INTERFACE ASSY (1/2). 14210.22 INTERFACE ASSY (2/2). 14410.23 POWER AMP IN and POWER PROTE

32、CT ASSYS . 14610.24 POWER AMP L ASSY. 14810.25 POWER AMP R ASSY . 15010.26 LOCAL SUPPLY and DC/DC ASSYS. 152VSX-94TXH556785678CDFABE10.27 TRANS2-1, VH-TR, DIODE and SP/PS ASSYS .15410.28 TRANS2-2, TRANS1 and PRIMARY ASSYS.15610.29 VOLUME, DISPLAY, POWER SW and INPUT SELECT ASSYS.15810.30 PREOUT & CO

33、NTROL ASSY.16010.31 HDMI & DLNA ASSY (1/4) (VSX-94TXH).16210.32 HDMI & DLNA ASSY (2/4) (VSX-94TXH).16410.33 HDMI & DLNA ASSY (3/4) (VSX-94TXH).16610.34 HDMI & DLNA ASSY (4/4) (VSX-94TXH).16810.35 HDMI & DVC ASSY (1/3) (VSX-92TXH).17010.36 HDMI & DVC ASSY (2/3) (VSX-92TXH).17210.37 HDMI & DVC ASSY (3

34、/3) (VSX-92TXH).17410.38 HDMI POWER, HDMI TRANS and HDMI DIODE ASSYS.17611. PCB CONNECTION DIAGRAM.17711.1 AUDIO & MULTI CH IN ASSY .17811.2 V-AUDIO and HEADPHONE ASSYS .17911.3 FRONT-IN ASSY .18011.4 BRIDGE1 and BRIDGE2 ASSYS .18111.5 TRANS SIDE and BRIDGE3 ASSYS.18211.6 COMPOSITE V ASSY .18411.7 S

35、-VIDEO ASSY.18511.8 COMPONENT & VOL ASSY .18611.9 DIGITAL MOTHER ASSY.19011.10 DSP ASSY.19411.11 INTERFACE ASSY .19811.12 POWER AMP IN ASSY .20211.13 POWER PROTECT ASSY.20311.14 POWER AMP L and POWER AMP R ASSYS.20411.15 LOCAL SUPPLY and DC/DC ASSYS.20811.16 TRANS2-1, VH-TR, DIODE and TRANS2-2 ASSYS

36、.21011.17 SP/PS ASSY.21211.18 TRANS1 and PRIMARY ASSYS .21411.19 POWER SW, VOLUME, DISPLAY and INPUT SELECT ASSYS.21611.20 PREOUT & CONTROL ASSY .22011.21 FR BARRIER 1 ASSY.22111.22 HDMI POWER, HDMI TRANS and HDMI DIODE ASSYS.22211.23 HDMI & DLNA ASSY (VSX-94TXH) .22411.24 HDMI & DVC ASSY (VSX-92TXH

37、).22812. PCB PARTS LIST.232VSX-94TXH612341234CDFABE1. SERVICE PRECAUTIONS1.1 NOTES ON SOLDERING For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit. Be sure to use lead-free solder and a soldering iron that can meet specifications for use with le

38、ad-free solders for repairs accompanied by reworking of soldering. Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40 C. Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 C in general, alt

39、hough the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of the soldering iron.Do NOT use a soldering iron whose tip temperature cannot be controlled.Compared with eutectic solders, lead-free solders have higher bond strengths but sl

40、ower wetting times and higher melting temperatures (hard to melt/easy to harden).The following lead-free solders are available as service parts: Parts numbers of lead-free solder: GYP1006 1.0 in dia. GYP1007 0.6 in dia. GYP1008 0.3 in dia.VSX-94TXH756785678CDFABE2. SPECIFICATIONS2.1 ACCESSORIESAudio

41、 Control Cable for iPod(XDE7025)AM Loop Antenna(ATB7013)Remote Control Unit(VSX-94TXH : AXD7504)(VSX-92TXH : AXD7501)Setup Microphone (for Auto MCACC setup)(APM7008)FM Wire Antenna(ADH7030)AA/IEC R6P Dry Cell Batteries (VEM1031)SLEEPCLEAR+10SR+ANALOG ATTDISCDIMMERCLASSD.ACCESSRECEIVERSOURCESYSTEM OF

42、FINPUTSELECTENTERTV CONTROLSHIFTVOLDVDTVBDTV CTRLDVR1TUNETUNESTSTSTATUSMCACCS.DIRECTMULTI OPESIGNAL SELT.DISPSBchSTEREO/F.S.SURRMEMORYTV CHINPUTSELECTMPXAUDIOSUBTITLEADV. SURRSTANDARDPHASETHXINFOMUTERECTV VOLi PodTUNERRECEIVERENTERREC STOPHDDCHCHDVDA PARAMETERTOP MENUV PARAMETERMENU T.EDITBANDPROGRA

43、MGUIDERETURNSETUPCATEGORYCDDVR2HOME MEDIAGALLERYCD-RXM RADIOSIRIUSZONE2/3DISPRECEIVERPHOTOANTCHLEVELGENREHDMIVSX-94TXH812341234CDFABE2.2 SPECIFICATIONSAmplifier sectionContinuous average power output of 140 (or 130) watts* per channel, min., at 8 ohms, from 20 Hz to 20 000 Hz with no more than 0.09

44、%* total harmonic distortion (front).Continuous Power Output (20 Hz to 20 kHz, 8 , 0.09 %)Front.130 W + 130 W (92TXH), 140 W + 140 W (94TXH)Center.130 W (92TXH), 140 W (94TXH)Surround. 130 W + 130 W (92TXH)140 W + 140 W (94TXH)Surround back. 130 W + 130 W (92TXH)140 W + 140 W (94TXH)Continuous Power

45、 Output (1 kHz, 6 , 1.0 %)Front.160 W + 160 W (92TXH), 180 W + 180 W (94TXH)Center.160 W (92TXH), 180 W (94TXH)Surround. 160 W + 160 W (92TXH)180 W + 180 W (94TXH)Surround back. 160 W + 160 W (92TXH)180 W + 180 W (94TXH)Total harmonic distortion.0.05 %(20 Hz to 20 kHz, 120 W, 8 ) (92TXH)(20 Hz to 20

46、 kHz, 130 W, 8 ) (94TXH)* Measured pursuant to the Federal Trade Commissions Trade Regulation rule on Power Output Claims for Amplifiers* Measured by Audio Spectrum AnalyzerAudio SectionInput (Sensitivity/Impedance)LINE. 335 mV/47 kFrequency Response (LINE). 5 Hz to 100 000 Hz dBOutput (Level/Impeda

47、nce)REC. 335 mV/2.2 kTone ControlBASS. 6 dB (100 Hz)TREBLE . 6 dB (10 kHz)LOUDNESS. +4 dB / +2 dB (100 Hz / 10 kHz)(at volume position 40 dB)Signal-to-Noise Ratio (IHF, short circuited, A network)LINE.103 dBSignal-to-Noise Ratio EIA, at 1 W (1 kHz)LINE.83 dBComposite Video / S-Video SectionInput (Se

48、nsitivity/Impedance). 1 Vp-p/75 Output (Level/Impedance). 1 Vp-p/75 Signal-to-Noise Ratio. 65 dBFrequency Response .5 Hz to 10 MHzComponent Video SectionInput (Sensitivity/Impedance). 1 Vp-p/75 Output (Level/Impedance). 1 Vp-p/75 Signal-to-Noise Ratio. 65 dBFrequency Response .5 Hz to 100 MHzFM Tune

49、r SectionFrequency Range.87.5 MHz to 108 MHzUsable Sensitivity.Mono: 13.2 dBf, IHF (1.3 V/75 )50 dB Quieting Sensitivity . Mono: 20.2 dBfStereo: 38.6 dBfSignal-to-Noise Ratio.Mono: 73 dB (at 85 dBf)Stereo: 70 dB (at 85 dBf)Distortion . Stereo: 0.5 % (1 kHz)Alternate Channel Selectivity .60 dB (400 k

50、Hz)Stereo Separation.40 dB (1 kHz)Frequency Response .30 Hz to 15 kHz 1 dBAntenna Input. 75 unbalancedAM Tuner SectionFrequency Range. 530 kHz to 1700 kHzSensitivity (IHF, Loop antenna). 350 V/mSelectivity . 25 dBSignal-to-Noise Ratio. 50 dBAntenna.Loop antennaMiscellaneousPower Requirements.AC 120