Pioneer-SCLX72-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 CORPORATION20092009 Printed in JapanSC-LX82RRV3967AUDIO/VIDEO MULTI-CHANNEL RECEIVERSC-LX82SC-LX72THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).ModelTypePower RequirementRemarksSC-LX82SYXJ5AC 220 V to 230 VSC-LX72SYXJ5AC 220 V to 230 VFor details, refer to Important Check Points for good servicing. T-ZZV JULYRadioFans.CN 收音机爱 好者资料库2SC-LX821234ABCDEF1234SAFETY INFORMATION 1. 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 Simpson 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 measured 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 characteristics. 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. 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 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 Service 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 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 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 intended 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 adversely 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3SC-LX8256785678ABCDEFImportant 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.4SC-LX821234ABCDEF1234CONTENTS SAFETY INFORMATION.21. SERVICE PRECAUTIONS .61.1 NOTES ON SOLDERING .61.2 NOTES ON REPLACING PARTS .61.3 CAUTION.61.4 NOTES ON ASSEMBLING.71.5 NOTES ON BENDING SHIELD FFC.82. SPECIFICATIONS.92.1 SPECIFICATIONS.92.2 PANEL FACILITIES.103. BASIC ITEMS FOR SERVICE.203.1 CHECK POINTS AFTER SERVICING.203.2 PCB LOCATIONS .213.3 JIGS LIST.234. BLOCK DIAGRAM.244.1 OVERALL WIRING DIAGRAM.244.2 BLOCK DIAGRAM for AUDIO BLOCK.264.3 BLOCK DIAGRAM for DIGITAL VIDEO and NW (NetWork) AUDIO.284.4 BLOCK DIAGRAM for ANALOG VIDEO BLOCK (1/4) .294.5 BLOCK DIAGRAM for ANALOG VIDEO BLOCK (2/4) .304.6 BLOCK DIAGRAM for ANALOG VIDEO BLOCK (3/4) .314.7 BLOCK DIAGRAM for ANALOG VIDEO BLOCK (4/4) .324.8 BLOCK DIAGRAM for U-COM BLOCK.334.9 BLOCK DIAGRAM for POWER BLOCK.345. DIAGNOSIS.365.1 DIAGNOSIS FLOWCHART.365.2 CIRCUIT DESCRIPTION.526. SERVICE MODE .606.1 TEST MODE.607. DISASSEMBLY.628. EACH SETTING AND ADJUSTMENT .688.1 HOW TO UPDATE FIRMWARE.689. EXPLODED VIEWS AND PARTS LIST.789.1 PACKING SECTION.789.2 EXTERIOR SECTION.809.3 REAR SECTION.829.4 CHASSIS SECTION .849.5 FRONT SECTION.8610. SCHEMATIC DIAGRAM .8810.1 AUDIO ASSY .8810.2 DSP ASSY (1/4).9010.3 DSP ASSY (2/4).9210.4 DSP ASSY (3/4).9410.5 DSP ASSY (4/4).9610.6 FRONT-HDMI ASSY .9810.7 232C_CONTROL ASSY .10010.8 DIGITAL MAIN ASSY (1/7).10210.9 DIGITAL MAIN ASSY (2/7).10810.10 DIGITAL MAIN ASSY (3/7).11010.11 DIGITAL MAIN ASSY (4/7).11210.12 DIGITAL MAIN ASSY (5/7).11410.13 DIGITAL MAIN ASSY (6/7).11610.14 DIGITAL MAIN ASSY (7/7).11810.15 INTERFACE ASSY.12010.16 COMPONENT ASSY.12210.17 COMPOSITE_S ASSY (1/2).12410.18 COMPOSITE_S ASSY (2/2).12610.19 FRONT BRIDGE ASSY .12810.20 MIC HP ASSY.1305SC-LX8256785678ABCDEF10.21 DISPLAY, VOL and POWER SW ASSYS.13210.22 ICE_BUFFER and ICE SHIELD ASSYS .13410.23 ICE INTERFACE ASSY.13610.24 ICEPOWER AMP ASSY (1/5).13810.25 ICEPOWER AMP ASSY (2/5).14010.26 ICEPOWER AMP ASSY (3/5).14210.27 ICEPOWER AMP ASSY (4/5).14410.28 ICEPOWER AMP ASSY (5/5).14610.29 V-BRIDGE and PRE_BRIDGE ASSYS.14810.30 PRIMARY GUARD ASSY.14910.31 PRIMARY ASSY.15010.32 REG ASSY .15210.33 ICE_REG ASSY .15410.34 B_REG ASSY.15610.35 B_DIODE ASSY .15810.36 HDMI RECT and H GUARD ASSYS .15910.37 DIGITAL_BRIDGE and ZOUT ASSYS.16011. PCB CONNECTION DIAGRAM.16211.1 AUDIO ASSY.16211.2 DSP ASSY.16611.3 FRONT-HDMI and 232C_CONTROL ASSYS .17011.4 DIGITAL MAIN ASSY.17211.5 INTERFACE ASSY.17611.6 COMPONENT ASSY.18011.7 COMPOSITE_S ASSY.18411.8 FRONT BRIDGE, MIC HP, VOL and POWER SW ASSYS .18811.9 DISPLAY ASSY .19211.10 ICE_BUFFER, ICE SHIELD and ICE INTERFACE ASSYS .19611.11 ICEPOWER AMP ASSY.20011.12 V-BRIDGE, PRE_BRIDGE, PRIMARY GUARD and PRIMARY ASSYS .20411.13 REG ASSY .20811.14 ICE_REG ASSY .21211.15 B_REG and B_DIODE ASSY.21411.16 HDMI RECT, H GUARD, DIGITAL_BRIDGE and ZOUT ASSYS.21612. PCB PARTS LIST.2186SC-LX821234ABCDEF12341. SERVICE PRECAUTIONS1.1 NOTES ON SOLDERING1.2 NOTES ON REPLACING PARTS1.3 CAUTION 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.IC800EMMA2RL2UPD61283F1-407LU2ABGAIC1501HDMI ReceiverSII9233ACTUIC with heat-padDIGITAL MAINASSYASSY NAMERef No.Part No.RemarksFUNCTIONPCB ASSY Part No.Parts that is Difficult to ReplaceAWX9498 Discharging Before starting the diagnosis, wait for three minutes until the electricity of the unit is discharged. Ground Points Please refer to page 62, “Ground Points”. 7SC-LX8256785678ABCDEF1.4 NOTES ON ASSEMBLINGWhen assembling the ICE amplifier block, please note the following points of screws to prevent from short-circuit.If 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 swarfThe following 7 points of screws must always be used AMZ30P060FTCICE_BUFFER AssyICEPOWER AMP AssyICE cover8SC-LX821234ABCDEF12341.5 NOTES ON BENDING SHIELD FFCWhen styling the Shield FFC (ADD7713: FRONT-HDMI CN3554 DIGITAL MAIN CN1601,) be sure to bend it only once. NEVER bend an FFC at a point where it has previously been bent in the opposite direction.Shield FFC (ADD7713)9SC-LX8256785678ABCDEF2. SPECIFICATIONS2.1 SPECIFICATIONSManufactured 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; 7,212,872; 7,333,929; 7,392,195; 7,272,567 & 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 are trademarks of DTS, Inc. 1996-2008 DTS, Inc. All Rights Reserved.Windows Media and the Windows logo are trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries.iPod is a trademark of Apple Inc., registered in the U.S. and other countries. iPhone is a trademark of Apple Inc.THX, the THX logo, Ultra2 Plus and Select2 Plus are trademarks of THX Ltd. 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 and logos owned by Neural Audio Corporation, THX is a trademark of THX Ltd., which may be registered in some jurisdictions. All rights reserved.10SC-LX821234ABCDEF12342.2 PANEL FACILITIES1 Front Panel11SC-LX8256785678ABCDEF2 Display12SC-LX821234ABCDEF123413SC-LX8256785678ABCDEF3 Rear Panel14SC-LX821234ABCDEF123415SC-LX8256785678ABCDEF4 Remote Control (In case of SC-LX82)16SC-LX821234ABCDEF123417SC-LX8256785678ABCDEF18SC-LX821234ABCDEF12345 Remote Control (In case of SC-LX72)19SC-LX8256785678ABCDEF20SC-LX821234ABCDEF12343. BASIC ITEMS FOR SERVICE3.1 CHECK POINTS AFTER SERVICINGItem to be checked regarding videoItem to be checked regarding audioBlock noiseDistortionHorizontal noiseNoiseFlickerVolume too lowDisturbed image (video jumpiness)Volume too highToo darkVolume fluctuatingToo brightSound interruptedMottled colorNo.ProceduresCheck points12345678Confirm whether the customer complain has been solved.If the customer complain occurs with the particular source, such as Dolby Digital, DTS, AAC, DVD-A and HDMI, input it for the operation check.The customer complain must not be reappeared.Video, Audio and operations must be normal.Check the analog audio playback.(Make the analog connections with a DVD player.)Each channel audio and operations must be normal.Check the digital audio playback.(Make the digital connections with a DVD player.)Each channel audio and operations must be normal.Check surround playback.(Select Surround mode and check the multichannel operations via the DSP circuit.)Each channel audio and operations must be normal.Check the tuner (AM and FM) operations.Audio and operations must be normal.Check the video output