Pioneer-AA6mk2-int-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 JapanONOFFVOLUMEINPUT SELECTORDIRECTPOWERSTANDBYPHONESA9A-A9MK2-KRRV3941INTEGRATED AMPLIFIERA-A9MK2-KA-A6MK2-KSTEREO RECEIVERSX-A9MK2-KSX-A6MK2-KTHIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).ModelTypePower RequirementRemarksA-A9MK2-KSYXCN5AC 220 V to 230 VA-A6MK2-KSYXCN5AC 220 V to 230 VSX-A9MK2-KCUXCNAC 120 VSX-A6MK2-KCUXCNAC 120 VFor details, refer to Important Check Points for good servicing. T-ZZK JUNERadioFans.CN 收音机爱 好者资料库2A-A9MK2-K1234ABCDEF1234SAFETY INFORMATION NOTICE(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.WARNINGThis product may contain a chemical known to the State of California to cause cancer, or birth defects or other reproductive harm.Health & Safety Code Section 25249.6 - Proposition 65ANY MEASUREMENTS NOT WITHIN THELIMITS OUTLINED ABOVE ARE INDICATIVEOF A POTENTIAL SHOCK HAZARD ANDMUST BE CORRECTED BEFORE RETURN-ING THE APPLIANCE TO THE CUSTOMER.2. PRODUCT SAFETY NOTICEMany electrical and mechanical parts in the appliancehave special safety related characteristics. These areoften not evident from visual inspection nor theprotection afforded by them necessarily can be obtainedby using replacement components rated for voltage,wattage, etc. Replacement parts which have thesespecial safety characteristics are identified in thisService Manual.Electrical components having such features areidentified by marking with a on the schematics andon the parts list in this Service Manual.The use of a substitute replacement component whichdoes not have the same safety characteristics as thePIONEER recommended replacement one, shown in theparts list in this Service Manual, may create shock, fire,or other hazards.Product Safety is continuously under review and newinstructions are issued from time to time. For the latestinformation, always consult the current PIONEERService Manual. A subscription to, or additional copiesof, PIONEER Service Manual may be obtained at anominal charge from PIONEER.(FOR USA MODEL ONLY)1. SAFETY PRECAUTIONSThe following check should be performed for thecontinued protection of the customer and servicetechnician.LEAKAGE CURRENT CHECKMeasure leakage current to a known earth ground(water pipe, conduit, etc.) by connecting a leakagecurrent tester such as Simpson Model 229-2 orequivalent between the earth ground and all exposedmetal parts of the appliance (input/output terminals,screwheads, metal overlays, control shaft, etc.). Plugthe AC line cord of the appliance directly into a 120VAC 60 Hz outlet and turn the AC power switch on. Anycurrent measured must not exceed 0.5 mA.DeviceundertestLeakagecurrenttesterEarthgroundReading shouldnot be above0.5 mAAlso test withplug reversed(Using AC adapterplug as required)Test allexposed metalsurfacesAC Leakage TestRadioFans.CN 收音机爱 好者资料库3A-A9MK2-K56785678ABCDEFImportant 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.4A-A9MK2-K1234ABCDEF1234CONTENTS SAFETY INFORMATION.21. SERVICE PRECAUTIONS .51.1 NOTES ON SOLDERING .51.2 DISCHARGE OF POWER AMPLIFIER .52. SPECIFICATIONS.62.1 SPECIFICATIONS.62.2 PANEL FACILITIES.103. BASIC ITEMS FOR SERVICE.153.1 PCB LOCATIONS .154. BLOCK DIAGRAM.184.1 OVERALL WIRING DIAGRAM.184.2 OVERALL BLOCK DIAGRAM.205. DIAGNOSIS.225.1 TROUBLESHOOTING .225.2 SPECIFICATION OF PROTECTIVE OPERATION.236. SERVICE MODE .237. DISASSEMBLY.248. EACH SETTING AND ADJUSTMENT .328.1 ADJUSTMENT.329. EXPLODED VIEWS AND PARTS LIST.339.1 PACKING SECTION (A-A9MK2-K).339.2 EXTERIOR SECTION (A-A9MK2-K) .349.3 PACKING SECTION (A-A6MK2-K).389.4 EXTERIOR SECTION (A-A6MK2-K) .409.5 PACKING SECTION (SX-A9MK2-K).449.6 EXTERIOR SECTION (SX-A9MK2-K).469.7 PACKING SECTION (SX-A6MK2-K).499.8 EXTERIOR SECTION (SX-A6MK2-K).5010. SCHEMATIC DIAGRAM .5410.1 FUNCTION and HEADPHONE ASSYS.5410.2 FRONT, REMOCON, STATION, POWER LED and ENCODER SW ASSYS.5610.3 XM-READY ASSY.5810.4 AMP LCH, AMP RCH, PROTECTION L-CH and PROTECTION R-CH ASSYS.6010.5 REG IC, SUB TRANS, POWER SW and MAIN ASSYS.6211. PCB CONNECTION DIAGRAM .6411.1 FANCTION and HEADPHONE ASSYS .6411.2 FRONT, REMOCON, POWER LED and ENCODER SW ASSYS .6611.3 STATION ASSY.6811.4 XM-READY ASSY.7011.5 AMP LCH, PROTECTION L-CH and SPEAKER L-CH ASSY .7211.6 AMP RCH, PROTECTION R-CH and SPEAKER R-CH ASSY.7411.7 REG IC and MAIN ASSYS.7611.8 SUB TRANS and POWER SW ASSYS .7812. PCB PARTS LIST .795A-A9MK2-K56785678ABCDEF1. SERVICE PRECAUTIONS1.1 NOTES ON SOLDERING1.2 DISCHARGE OF POWER AMPLIFIER 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.GNDGND-+GNDGND+-REG IC Assy1. Turn off the power of the product.2. Discharge both ends of capacitor of Power Assy by short-circuiting (connector GND and +, connector GND and -) using a resistor with 200/10W (and above) for 30 seconds.Resistor with 200/10WResistor with 200/10WResistor to be used6A-A9MK2-K1234ABCDEF12342. SPECIFICATIONS2.1 SPECIFICATIONSAmplifier sectionPower output specification is for when power supply is 230 V.Continuous power output (both channels driven at 20 Hz to 20 kHz)*THD 0.2 %, 4 . . . . . . . . . . . . . . . . .70 W + 70 W THD 0.2 %, 8 . . . . . . . . . . . . . . . . .55 W + 55 W Continuous power output (both channels driven at 1 kHz)THD 0.7 %, 4 . . . . . . . . . . . . . . . . .73 W + 73 W THD 0.7 %, 8 . . . . . . . . . . . . . . . . .58 W + 58 W Total harmonic distortion*20 Hz to 20 kHz, 25 W, 8 . . . . . . . . . . . . 0.05 %* * Measured with DIRECT button switched on.* Measured by Audio Spectrum AnalyzerAudio sectionInput (Sensitivity/Impedance)CD, TAPE, TUNER, AUX . . . . . . . . . 200 mV/22 kPHONO (MM) . . . . . . . . . . . . . . . . . .2.8 mV/47 kPHONO (MC). . . . . . . . . . . . . . . . . . .0.3 mV/100 Frequency responseCD, TAPE, TUNER, AUX . . . . . . . . . . . . . . . . . . . . . . .5 Hz to 100 kHz dBPHONO (MM) . . . . . . . . 20 Hz to 20 kHz 0.2 dBPHONO (MC). . . . . . . . . 20 Hz to 20 kHz 0.3 dBPHONO (MM) overload level1 kHz, THD 0.2 %. . . . . . . . . . . . . . . . . . . . . .60 mVPHONO (MC) overload level1 kHz, THD 0.2 %. . . . . . . . . . . . . . . . . . . . . . .6 mVOutput (Level/Impedance)TAPE REC . . . . . . . . . . . . . . . . . . . . . 200 mV/1 kTone controlBass . . . . . . . . . . . . . . . . . . . . . . . 10 dB (100 Hz)Treble . . . . . . . . . . . . . . . . . . . . . . 10 dB (10 kHz)Signal-to-Noise Ratio (IHF SHORTED, A-NETWORK)CD, TAPE, TUNER, AUX (200 mV input) . .103 dBPHONO (MM, 2.8 mV input). . . . . . . . . . . . .80 dBPHONO (MC, 0.2 mV input) . . . . . . . . . . . . .70 dBMiscellaneousPower requirements. . . . . . . . . . . . . . . .AC 220 V to 230 V, 50 Hz/60 HzPower consumption . . . . . . . . . . . . . . . . . . 200 WIn standby. . . . . . . . . . . . . . . . . . . . . . . . . .0.8 WDimensions. . . . . . . 420 mm (W) x 113 mm (H) x 369 mm (D)Weight (without package). . . . . . . . . . . . . .11.5 kgAccessoriesRemote control . . . . . . . . . . . . . . . . . . . . . . . . . . .1AAA/IEC R03 dry cell batterie . . . . . . . . . . . . .2Power cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Warranty card . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Operating instructions Note Specifications and the design are subject to possible modifications without notice, due to improvements.A-A97A-A9MK2-K56785678ABCDEFA-A6Amplifier sectionPower output specification is for when power supply is 230 V.Continuous power output (both channels driven at 20 Hz to 20 kHz)*THD 0.2 % . . . . . . . . . . . . . . . . . . . . .60 W + 60 WTHD 0.2 % . . . . . . . . . . . . . . . . . . . . .45 W + 45 WContinuous power output (both channels driven at 1 kHz)THD 0.7 %, 4 . . . . . . . . . . . . . . . . .70 W + 70 WTHD 0.7 %, 8 . . . . . . . . . . . . . . . . .47 W + 47 WTotal harmonic distortion*20 Hz to 20 kHz, 25 W, 8 . . . . . . . . . . . . 0.05 %* * Measured with DIRECT button switched on.* Measured by Audio Spectrum AnalyzerAudio sectionInput (Sensitivity/Impedance)CD, TAPE, TUNER, AUX . . . . . . . . . 200 mV/22 kPHONO (MM) . . . . . . . . . . . . . . . . . .2.8 mV/47 kFrequency responseCD, TAPE, TUNER, AUX. . . . 5 Hz to 100 kHz dBPHONO (MM) . . . . . . . . 20 Hz to 20 kHz 0.2 dBPHONO (MM) overload level1 kHz, THD 0.2 %. . . . . . . . . . . . . . . . . . . . . .60 mVOutput (Level/Impedance)TAPE REC . . . . . . . . . . . . . . . . . . . . . 200 mV/1 kTone controlBass . . . . . . . . . . . . . . . . . . . . . . . 10 dB (100 Hz)Treble . . . . . . . . . . . . . . . . . . . . . . 10 dB (10 kHz)Signal-to-Noise Ratio (IHF SHORTED, A-NETWORK)CD, TAPE, TUNER, AUX (200 mV input) . . 103 dBPHONO (MM, 2.8 mV input) . . . . . . . . . . . . 80 dBMiscellaneousPower requirements. . . . . . . . . . . . . . . .AC 220 V to 230 V, 50 Hz/60 HzPower consumption . . . . . . . . . . . . . . . . . . 170 WIn standby. . . . . . . . . . . . . . . . . . . . . . . . . .0.8 WDimensions. . . . . . . 420 mm (W) x 100 mm (H) x 359 mm (D)Weight (without package). . . . . . . . . . . . . . . 10 kgAccessoriesRemote control . . . . . . . . . . . . . . . . . . . . . . . . . . .1AAA/IEC R03 dry cell batteries . . . . . . . . . . . . .2Power cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Warranty card . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Operating instructions Note Specifications and the design are subject to possible modifications without notice, due to improvements.Cleaning the unit Use a polishing cloth or dry cloth to wipe off dust and dirt. When the surface is dirty, wipe with a soft cloth dipped in some neutral cleanser diluted five or six times with water, and wrung out well, and then wipe again with a dry cloth. Do not use furniture wax or cleansers. Never use thinners, benzine, insecticide sprays or other chem