Pioneer-A20K-int-sm 维修电路原理图.pdf

ORDER NO.PIONEER CORPORATION 1-1, Shin-ogura, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0031, 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 CORPORATION20122012 Printed in JapanA-30-KRRV4297INTEGRATED AMPLIFIERA-30-KA-30-SA-20-KA-20-SA-20A-10-KA-10-STHIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).ModelTypePower RequirementRemarksA-30-K/-SPWSYXE8AC 220 V to 230 VA-20-K/-SPWSYXE8AC 220 V to 230 VA-20CUXEAC 120 VA-10-K/-SSYXE8AC 220 V to 230 VK-FZV MAYRadioFans.CN 收音机爱 好者资料库2A-30-K1234ABCDEF1234SAFETY 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 NOTICEMany 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 tocause cancer, birth defects or other reproductive harm.56 noi t isoporP - 6.94252 noi tceS edoC ytefaS & ht laeH 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.RadioFans.CN 收音机爱 好者资料库3A-30-K56785678ABCDEFCONTENTS SAFETY INFORMATION.21. SERVICE PRECAUTIONS.41.1 NOTES ON SOLDERING.42. SPECIFICATIONS.52.1 ACCESSORIES.52.2 SPECIFICATIONS.53. BASIC ITEMS FOR SERVICE .63.1 CHECK POINTS AFTER SERVICING .63.2 PCB LOCATIONS.73.3 JIGS LIST.74. BLOCK DIAGRAM .84.1 OVERALL CONNECTION DIAGRAM.84.2 BLOCK DIAGRAM.105. DIAGNOSIS .125.1 TROUBLESHOOTING.125.2 PROTECTION CIRCUIT DESCRIPTION.155.3 IC INFORMATION .176. SERVICE MODE.217. DISASSEMBLY .228. EACH SETTING AND ADJUSTMENT.298.1 HOW TO CHECK THE FIRMWARE VERSION.298.2 FARMWARE UPDATING .298.3 HOW TO ADJUST THE IDLE CURRENT .319. EXPLODED VIEWS AND PARTS LIST.329.1 PACKING SECTION.329.2 EXTERIOR SECTION (A-30/A-20).349.3 EXTERIOR SECTION (A-10) .3810. SCHEMATIC DIAGRAM.4010.1 MAIN ASSY.4010.2 FRONT ASSY and SECOND POWER SW ASSY (A-30/A-20).4210.3 MASTER VOLUME ASSY, TONE ASSY and HEADPHONE ASSY.4411. PCB CONNECTION DIAGRAM.4611.1 MAIN ASSY.4611.2 FRONT ASSY.5011.3 MASTER VOLUME ASSY.5211.4 TONE ASSY .5311.5 HEADPHONE ASSY and SECOND POWER SW ASSY (A-30/A-20).5412. PCB PARTS LIST.554A-30-K1234ABCDEF12341. 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 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.5A-30-K56785678ABCDEF2. SPECIFICATIONS2.1 ACCESSORIES2.2 SPECIFICATIONSRemote control unit (A-30-K/-S : CARTA30) (A-20-K/-S,A-20 : CARTA20)AAA/R03 dry cell battery x 2 (A-30-K/-S, A-20-K/-S, A-20)AC Power cord (A-30-K/-S : CJA2B054Z) (A-20-K/-S, A-10-K/-S : CJA2B020Z)Warranty card (A-30-K/-S, A-20-K/-S, A-10-K/-S : CQE1A541Z) Operating instructions (A-30-K/-S, A-20-K/-S, A-10-K/-S : CQX1A1640Y) (A-20 : CQX1A1644Z)Amplifier sectionPower output specification is for when power supply is 230 V.(A-30-K/-S, A-20-K/-S, A-10-K/-S)Power output specification is for when power supply is 120 V.(A-20)Continuous power output (both channels driven at 20 Hz to 20 kHz)A-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70 W + 70 WA-20, A-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 W + 50 W(THD 0.1 %, 4 )A-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 W+40 WA-20, A-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 W+30 W(THD 0.05 %, 8 )Audio sectionInput (Sensitivity/Impedance)SACD/CD, NETWORK, TUNER, AUX, RECORDER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mV/50 kPOWER AMP DIRECT (A-30 only). . . . . . . . . . . . .1 V/10 kPHONO (MM). . . . . . . . . . . . . . . . . . . . . . . . . 2.8 mV/50 kOutput (Level/Impedance)RECORDER OUT . . . . . . . . . . . . . . . . . . . . . 200 mV/2.2 kPHONES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 mV/32 Frequency responseSACD/CD, NETWORK, TUNER, AUX, RECORDER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Hz to 100 kHz dB*PHONO (MM). . . . . . . . . . . . . . . .20 Hz to 20 kHz 0.5 dB* Measured with DIRECT button switched on.Tone control (When VOLUME is set to -30 dB)Bass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 dB (100 Hz)Treble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 dB (10 kHz)Signal-to-Noise Ratio (IHF SHORTED, A-NETWORK)SACD/CD, NETWORK, TUNER, AUX, RECORDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 dB*PHONO (MM, 2.8 mV input) . . . . . . . . . . . . . . . . . . .77 dB* Measured with DIRECT button switched on.Speaker load impedanceA, B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 to 16 A+B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 32 Bi-wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 to 16 MiscellaneousPower requirements. . . . . . . . . . . . . . . . . . . . . . . . . . AC 220 V to 230 V, 50 Hz (A-30-K/-S, A-20-K/-S, A-10-K/-S). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC 120 V, 60 Hz(A-20)Power consumptionA-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 WA-20/A-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 WIn standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 WDimensions. . . . . . . . . . . . . . .435 mm (W) x 128 mm (H) x 360 mm (D)Weight (without package)A-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.9 kgA-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.2 kgA-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.7 kg NoteSpecifications and the design are subject to possible modifications without notice, due to improvements.Corporation and product names mentioned herein are trademarks or registered trademarks of the respective corporations.6A-30-K1234ABCDEF12343. BASIC ITEMS FOR SERVICE3.1 CHECK POINTS AFTER SERVICINGItem to be checked regarding audioDistortionNoiseVolume too lowVolume too highVolume fluctuatingSound interruptedTo keep the product quality after servicing, confirm recommended check points shown below.See the table below for the items to be checked regarding audio.No. Procedures Check points 1 Check the symptom pointed out by a customer The pointed content should not reoccur Sound and operation should not be defective 2 Check each input and main VOL (check the operation of selector) The sound is output by selecting an analog-connected input with a selector and the sound volume should change by rotating main VOL knob 3 Check the tone control, balance, and function The sound quality or right and left balances should change by rotating each VOL knob 4 Check LOUDNESS and DIRECT functions The sound quality should change by setting LOUDNESS function to ON. LOUDNESS function should be disabled by setting DIRECT function to ON. 5 Check POWER AMP DIRECT terminal (only A-30) (connected from pre-out terminal of AV AMP to POWER AMP DIRECT terminal) The sound volume should change by adjusting the sound volume of connected AV AMP. The sound volume should not be changed by the main VOL on the main unit. 6 Check SPEAKER A/B and headphone terminal There should not be defect in sound such as noise 7 Check the external package Check scratch or taint is not generated after accepting the repair 7A-30-K56785678ABCDEF3.2 PCB LOCATIONS3.3 JIGS LISTSECOND POWER SW ASSYMAIN ASSYAMASTER VOLUME ASSYCFHEADPHONE ASSYETONE ASSYDFRONT ASSYBNOTES: - Parts marked by “NSP” are generally unavailable because they are not in our Master Spare Parts List. - The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation.Mark No. Description Part No. LIST OF ASSEMBLIESNSP1.MAIN ASSY (A-30-K/-S)COP12421B 2.MAIN ASSYAZW7487NSP1.MAIN ASSY (A-20-K/-S)COP12421D 2.MAIN ASSYAZW7489NSP1.MAIN ASSY (A-20)COP12421E 2.MAIN ASSYAZW7490NSP1.MAIN ASSY (A-10-K/-S)COP12421F 2.MAIN ASSYAZW7491NSP1.FRONT ASSY (A-30-K/-S)COP12422B 2.FRONT ASSYAZW7482 2.MASTER VOLUME ASSYAZW7476 2.TONE ASSYAZW7477 2.HEADPHONE ASSYAZW7479 2.SECOND POWER SW ASSYAZW7478NSP1.FRONT ASSY (A-20-K/-S)COP12422C 2.FRONT ASSYAZW7483 2.MASTER VOLUME ASSYAZW7481 2.TONE ASSYAZW7477 2.HEADPHONE ASSYAZW7479 2.SECOND POWER SW ASSYAZW7478NSP1.FRONT ASSY (A-20)COP12422G 2.FRONT ASSYAZW7484 2.MASTER VOLUME ASSYAZW7481 2.TONE ASSYAZW7477 2.HEADPHONE ASSYAZW7479 2.SECOND POWER SW ASSYAZW7478NSP1.FRONT ASSY (A-10-K/-S)COP12422D 2.FRONT ASSYAZW7485 2.MASTER VOLUME ASSYAZW7481 2.TONE ASSYAZW7477 2.HEADPHONE ASSYAZW7479Mark No. Description Part No. NameJig No.RemarksUPDATE JIGGGF1675Farmware Update8A-30-K1234ABCDEF12344. BLOCK DIAGRAM4.1 OVERALL CONNECTION DIAGRAMMAIN AS(A-30-K/(A-20-K/(A-20 (A-10-K/AFRONT ASSY(A-30-K/-S : AZW748(A-20-K/-S : AZW748(A-20 : AZW748(A-10-K/-S : AZW748BSECOND POWER SW ASSY(A-30-K/-S, A-20-K/-S, A-20 : AZW7478)FCTONE ASSY(AZW7477)DHEADPHONE ASSY(AZW7479)E9A-30-K56785678ABCDEFMAIN ASSY(A-30-K/-S : AZW7487)(A-20-K/-S : AZW7489)(A-20 : AZW7490)(A-10-K/-S : AZW7491)ASSYS : AZW7482)S : AZW7483): AZW7484)S : AZW7485)MASTER VOLUME ASSY(A-30-K/-S : AZW7476)(A-20-K/-S, A-20, A-10-K/-S : AZW7481)CTherefore, when replacing, be sure to use parts of identical designation.When ordering service parts, be sure to refer to EXPLODED VIEWS and PARTS LIST or PCB PARTS LIST.The mark found on some component parts indicates the importance of the safety factor of the part.10A-30-K1234ABCDEF12344.2 BLOCK DIAGRAM11A-30-K56785678ABCDEF12A-30-K1234ABCDEF12345. DIAGNOSIS5.1 TROUBLESHOOTINGIs the Power supplyturned ON ?ANoNoYesYesNoNoNoYesYesYesYesYesYesNoNoNoStatus of product Insert AC Power cord Main unit POWER SW: ON (A-30/A-20) POWER ON operation by remote control Unit Select SPEAKER-A INPUT : SACD/CDIs the standby LED blinking ?No soundThe protection circuit is operatingIs the voltage of ST_+3.3V (CN94: 4, 5 pins) +3.3V ?Is the voltage of IC91: 2 pin approximately 5V ?Is there AC waveform onD913 anode side ?IC91 failureD913 failureD914 failureIs BACK UP line set to H ?(CN94: 7 pin)Q903, D917 failureF901 failureT901 failureIs voltage of IC11: 1 pin +3.3V ?IC12 failureIs there a waveform of Remote Controller signal at IC11: 59 pin(REMOTE IN) when POWER key on the Remote ControlUnit pressed ?IC11 failureRC11 failureConnection failure between BN94 and CN94(A-30/A-20)(For the type, refer to the 5.2 PROTECTION CIRCUIT DESCRIPTION)No sound13A-30-K56785678ABCDEFANoNoNoNoNoNoNoNoBYesYesYesYesYesYesYesYesDoes the protection relay click and is it turned ON after the power supply is turned ON ?Is IC11: 50 pin(SPEAKER A) set to H ?Is SPEAKER A LEDlighting ?Is there output atHP terminal ? Relay power supply resistance(R392, R394) failure RY33 failure Connection failure betweenCY93 and CX93 S103 failure IC11 failure IC11 failureIs there output atREC OUT terminal ? IC21 failure, communication failure Connection failure betweenCY93 and CX93 Solder failure of input pin jackIs there a signal atBN51:1, 9 pins ? IC23 failure Solder failure of IC23 I/O couplingelectrolysis capacitor Connection failure betweenCN51 and BN51Is there a signal atBN51:3, 7 pins