Pioneer-SCLX81-avr-sm 维修电路原理图.pdf

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, Singapore 159936 PIONEER CORPORATION20082008 Printed in JapanSC-LX81RRV3841AUDIO/VIDEO MULTI-CHANNEL RECEIVERSC-LX81SC-LX71THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).ModelTypePower RequirementRemarksSC-LX81HYSXJ5AC 220 V to 230 V SC-LX71HYSXJ5AC 220 V to 230 VFor details, refer to Important Check Points for good servicing. T-ZZV AUG.RadioFans.CN 收音机爱 好者资料库2SC-LX811234ABCDEF1234Important 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), and 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 when 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 should 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 there 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.Please 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, please 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 necessary.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 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 mirrors 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 products 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.RadioFans.CN 收音机爱 好者资料库3SC-LX8156785678ABCDEFCONTENTS1. SERVICE PRECAUTIONS.51.1 NOTES ON SOLDERING.51.2 NOTES ON REPLACING PARTS.51.3 NOTES ON ASSEMBLING.62. SPECIFICATIONS.82.1 ACCESSORIES.82.2 SPECIFICATIONS.92.3 PANEL FACILITIES.103. BASIC ITEMS FOR SERVICE .163.1 CHECK POINTS AFTER SERVICING .163.2 PCB LOCATIONS.173.3 JIGS LIST.194. BLOCK DIAGRAM .204.1 OVERALL WIRING DIAGRAM .204.2 AUDIO BLOCK DIAGRAM.224.3 DSP BLOCK DIAGRAM.244.4 HDMI NETWORK BLOCK DIAGRAM .254.5 MICROCOMPUTER BLOCK DIAGRAM .264.6 POWER BLOCK DIAGRAM .285. DIAGNOSIS .305.1 DIAGNOSIS FLOWCHART .305.2 CIRCUIT DESCRIPTION.626. SERVICE MODE.706.1 TEST MODE.707. DISASSEMBLY .758. EACH SETTING AND ADJUSTMENT.788.1 HOW TO UPDATE FIRMWARE.789. EXPLODED VIEWS AND PARTS LIST.849.1 PACKING SECTION.849.2 EXTERIOR SECTION .869.3 CHASSIS SECTION.889.4 REAR PANEL SECTION .909.5 FRONT PANEL SECTION.9210. SCHEMATIC DIAGRAM.9410.1 AUDIO ASSY.9410.2 D-MOTHER ASSY (1/4).9610.3 D-MOTHER ASSY (2/4).9810.4 D-MOTHER ASSY (3/4).10010.5 D-MOTHER ASSY (4/4).10210.6 FRONT IN and V-BRIDGE ASSYS.10410.7 232C & CONTROL ASSY.10610.8 HDMI NETWORK ASSY (1/6) .10810.9 HDMI NETWORK ASSY (2/6) .11010.10 HDMI NETWORK ASSY (3/6) .11210.11 HDMI NETWORK ASSY (4/6) .11410.12 HDMI NETWORK ASSY (5/6) .11610.13 HDMI NETWORK ASSY (6/6) .11810.14 INTERFACE ASSY.12010.15 COMPONENT ASSY.12210.16 COMPOSITE S ASSY.12410.17 FRONT BRIDGE ASSY.12610.18 DISPLAY, VOL and POWER SW ASSYS.12810.19 PRE BRIDGE, ICE BUFFER, ICE SHIELD and PRIMARY GUARD ASSYS.13010.20 ICE INTERFACE and ZOUT ASSYS.13210.21 ICEPOWER AMP (1/5).13410.22 ICEPOWER AMP (2/5).13610.23 ICEPOWER AMP (3/5).13810.24 ICEPOWER AMP (4/5).14010.25 ICEPOWER AMP (5/5).14210.26 PRIMARY ASSY.14410.27 REG ASSY .14610.28 ICE REG ASSY .14810.29 B REG ASSY.15010.30 B DIODE, DCDC, and HDMI RECT ASSYS.15211. PCB CONNECTION DIAGRAM.1534SC-LX811234ABCDEF123411.1 AUDIO ASSY .15411.2 D-MOTHER ASSY.15811.3 FRONT IN ASSY.16211.4 232C & CONTROL ASSY.16311.5 HDMI NETWORK ASSY.16411.6 INTERFACE ASSY .16811.7 COMPONENT and V BRIDGE ASSYS.17211.8 COMPOSITE S ASSY .17611.9 FRONT BRIDGE ASSY .17811.10 DISPLAY, POWER SW and VOL ASSYS .18011.11 PRE BRIDGE, ICE BUFFER and ICE SHIELD ASSYS.18411.12 ICE INTERFACE ASSY .18611.13 ICEPOWER AMP ASSY.18811.14 ZOUT, PRIMARY GUARD and REG ASSYS.19211.15 PRIMARY ASSY .19611.16 ICE REG ASSY.19811.17 B DIODE and B REG ASSYS.20011.18 DCDC and HDMI RECT ASSYS.20212. ELECTRICAL PARTS LIST .2035SC-LX8156785678ABCDEF1. SERVICE PRECAUTIONS1.1 NOTES ON SOLDERING1.2 NOTES ON REPLACING PARTS 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 lead-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, although 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 slower 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.The part listed below is difficult to replace as a discrete component part.When the part listed in the table is defective, replace whole Assy.Ref No.FUNCTIONPart No.RemarksIC101HDMI ReceiverSII9135CTUIC with heat-padIC701MEDIA ProcessorDM850EIC with heat-padIC791iPod Co-Processor341S2154IC with heat-padHDMI NETWORKASSYASSY NAMEParts that is Difficult to ReplaceSC-LX81: AWX9234SC-LX71: AWX9235PCB ASSY Part No.6SC-LX811234ABCDEF12341.3 NOTES ON ASSEMBLINGWhen assembling the ICE amplifier block, please note the following points of screws to prevent from short circuit.The following 7 points of screws must always be used AMZ30P060FTC7SC-LX8156785678ABCDEFIf a screw at any of these points needs to be removed for service, be sure to check that the swarf is not on the screw before refastening.Points to be watched for swarf8SC-LX811234ABCDEF12342. SPECIFICATIONS2.1 ACCESSORIESAM Loop Antenna(ATB7013)Remote Control Unit(AXD7521)Setup Microphone (for Auto MCACC setup)(APM7008) Caution Sheet SP Warranty Card Operating InstructionsFM Wire Antenna(ADH7030)AA/IEC R6P Dry Cell BatteriesPower Cord(ADG7062)SR+ mini-plug cable (ADE7095)SERVICE PARTS9SC-LX8156785678ABCDEF2.2 SPECIFICATIONSAmplifier SectionMulti channel simultaneous power output (1 kHz, 1 %, 8 )7ch total . . . . . . . . . . . . . . . . .700 W (LX81), 630 W(LX71)Continuous Power Output (Multichannel)(DIN 1 kHz, THD 1 %, 6 )Front. . . . . . . 190 W + 190 W (LX81), 180 W + 180 W (LX71)Center . . . . . . . . . . . . . . . . . . . . . 190 W (LX81), 180 W (LX71)Surround . . . . . . . . . . . . . . . . . . . . . . . 190 W + 190 W (LX81) 180 W + 180 W (LX71)Surround back . . . . . . . . . . . . . . . . . . 190 W + 190 W (LX81) 180 W + 180 W (LX71)(DIN 1 kHz, THD 1 %, 8 )Front. . . . . . . 160 W + 160 W (LX81), 150 W + 150 W (LX71)Center . . . . . . . . . . . . . . . . . . . . . 160 W (LX81), 150 W (LX71)Surround . . . . . . . . . . . . . . . . . . . . . . . 160 W + 160 W (LX81) 150 W + 150 W (LX71)Surround back . . . . . . . . . . . . . . . . . . 160 W + 160 W (LX81) 150 W + 150 W (LX71)Total harmonic distortion. . . . . . . . . . . . . . . . . . . . . . . . 0.05 % (20 Hz to 20 kHz, 130 W, 8 )Rated Power Output Stereo (20 Hz to 20 kHz, 0.09 %, 8 ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 W+140 W The above specifications are applicable when the power supply is 230 V.Audio SectionInput (Sensitivity/Impedance)PHONO MM . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2 mV/47 kLINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .335 mV/47 kFrequency Response (LINE). . . . . . .5 Hz to 100 000 Hz dBOutput (Level/Impedance)REC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335 mV/2.2 kSignal-to-Noise Ratio (IHF, short circuited, A network)LINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103 dBSignal-to-Noise RatioDIN (continuous rated power output/50 mW)LINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 dB/65 dBComposite Video / S-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 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 MHzHDMI SectionInput . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-pinOutput. . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-pin (5 V, 100 mA)Network SectionLAN terminal . . . . . . . . . . . . . . . . . . 10 BASE-T/100 BASE-TXUSB SectionUSB terminal . . . . . . . . . . . . . . . . . . . . . . . USB2.0 Full SpeedFM Tuner SectionFrequency Range . . . . . . . . . . . . . . . . . 87.5 MHz to 108 MHzAntenna Input . . . . . . . . . . . . . . . . . . . . . . . 75 unbalancedAM Tuner SectionFrequency Range . . . . . . . 531 kHz to 1602 kHz (9 kHz step)Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Loop antennaMiscellaneousPower Requirements. . . . . . . AC 220 V to 230 V, 50 Hz/60 HzPower Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . .330 WIn standby . . . . . . . . . . . . . . . .0.5 W (HDMI Control OFF) 0.7 W (HDMI Control ON)Dimensions . . . . 420 (W) mm x 200 (H) mm x 459.5 (D) mmWeight (without package). . . . . . . . . . . . . . . . . . . . . . . 18.5 kgFurnished PartsSetup microphone (for Auto MCACC Setup) . . . . . . . . . . . . 1AA/IEC R6P dry cell batteries . . . . . . . . . . . . . . . . . . . . . . . . . 2Remote control unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1AM loop antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1FM wire antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Power cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Warranty card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Operating instructions Specifications and the design are subject to possible modifications without notice, due to improvements. Specifications and the design are subject to possiblemodifications without notice, due to improvements.Manufactured under license from Dolby Laboratories.“Dolby”, “Pro Logic”, “Surround EX” and the double-Dsymbol are trademarks of Dolby Laboratories.Manufactured under license under U.S. Patent #s:5,451,942; 5,956,674; 5,974,380; 5,978,762; 6,226,616;6,487,535 & other U.S. and worldwide patents issued &pending. DTS is a registered trademark and the DTS logos,Symbol, DTS-HD and DTS-HD Master Audio aretrademarks of DTS, Inc. 1996-2007 DTS, Inc. All RightsReserved.Windows Media and the Windows logo are trademarks orregistered trademarks of Microsoft Corporation in theUnited States and/or other countries.THX, the THX logo, Ultra2 Plus and Select2 Plus are trademarks of THXLtd. which may be registered in some jurisdictions. All rights reserved.All other trademarks are the property of their respective owners.“Neural Surround”, “Neural Audio”, “Neural” and “NRL” are trademarks andlogos owned by Neural Audio Corporation, THX is a trademark of THXLtd., which may be registered in some jurisdictions. All rights reserved.Specifications10SC-LX811234ABCDEF12342.3 PANEL FACILITIES1 STANDBY/ONSwitches the receiver between on and standby. Powerindicator lights when the receiver is on.2 INPUT SELECTOR dialUse to select an input source.3 PHASE CONTROL indicator Lights to indicatePhase Control or Full Band Phase Control is selected.ADVANCED MCACC indicator Lights when one ofthe Selecting MCACC presets is selected.DIGITAL VIDEO SCALER indicator Lights whenResolution is set to a setting other than PURE (forexample, when the video input signal is upscaled).HDMI indicator Blinks when connecting an HDMI-equipped component; lights when the component isconnected.4 Remote sensorReceives the signals from the remote control.5 Character display1 Front Panel6 MASTER VOLUME dial7 Front panel controlsTo access the front panel controls, push gently on thelower third portion of the panel with your finger.8 AUDIO PARAMETERUse to access the Audio options.9 VIDEO PARAM