Pioneer-SX20K-rec-sm 维修电路原理图.pdf

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1、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

2、, #04-01, Singapore 159936 PIONEER CORPORATION20122012 Printed in JapanSTEREO RECEIVERVOLUMETUNE / PRESETMEMORYSTANDBYA SPEAKERS BPHONESTONEBALANCESX-20STANDBY ONSX-20-KRRV4392STEREO RECEIVERSX-20-KSX-20-STHIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).ModelTypePower RequirementRemar

3、ksSX-20-KYXE8AC 220 V to 230 VSX-20-SYXE8AC 220 V to 230 VK-ZZZ OCT.RadioFans.CN 收音机爱 好者资料库2SX-20-K1234ABCDEF1234SAFETY INFORMATION CONTENTS SAFETY INFORMATION.21. SERVICE PRECAUTIONS.31.1 NOTES ON SOLDERING.31.2 SERVICE NOTICE.32. SPECIFICATIONS.43. BASIC ITEMS FOR SERVICE.53.1 CHECK POINTS AFTER S

4、ERVICING.53.2 PCB LOCATIONS.64. BLOCK DIAGRAM.84.1 OVERALL WIRING DIAGRAM .84.2 SIGNAL BLOCK DIAGRAM.104.3 LEVEL and POWER SUPPLY BLOCK DIAGRAM .124.4 GND MAP DIAGRAM.145. DIAGNOSIS.165.1 TROUBLESHOOTING.165.2 DETECTION CIRCUIT.225.3 IC INFORMATION.236. SERVICE MODE.336.1 SERVICE MODE.336.2 FACTORY

5、DEFAULT SETTINGS .367. DISASSEMBLY .378. EACH SETTING AND ADJUSTMENT .439. EXPLODED VIEWS AND PARTS LIST.449.1 PACKING SECTION.449.2 EXTERIOR SECTION.4610. SCHEMATIC DIAGRAM.5010.1 MAIN ASSY (1/2).5010.2 MAIN ASSY (2/2).5210.3 FRONT, LED, POWER SW. SPK SW AB, RMC and HP ASSYS.5411. PCB CONNECTION DI

6、AGRAM.5611.1 MAIN ASSY.5611.2 FRONT, POWER SW, HP, LED, RMC, SPK SW AB, GUIDE C and GUIDE R ASSYS.6012. PCB PARTS LIST.64This 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 too

7、ls, 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

8、 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3SX-20-K56785678ABCDEF1. SERVICE PRECAUTIONS1.1 NOTES ON SOLDERING1.2 SERVICE NOTICE For environmental protection, lead-free solder is used on the printed circuit boards mou

9、nted 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. The

10、refore, 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

11、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: GYP1

12、006 1.0 in dia. GYP1007 0.6 in dia. GYP1008 0.3 in dia. Discharging For more detail, please refer to 7. DISASSEMBLY - 1. Discharging.4SX-20-K1234ABCDEF12342. SPECIFICATIONSAmplifier sectionPower output specification is for when power supply is 230 V.Continuous power output (both channels driven at 2

13、0 Hz to 20 kHz)100 W+100 W (THD 1 %, 8 )Audio sectionInput (Sensitivity/Impedance)SACD/CD. . . . . . . . . . . . . . . . . . . . . . . . . . . 400 mV/47 kPHONO (MM) . . . . . . . . . . . . . . . . . . . . . . . 5.5 mV/47 kOutput (Level/Impedance)RECORDER OUT. . . . . . . . . . . . . . . . . . . . 40

14、0 mV/2.0 kFrequency responseSACD/CD, NETWORK, RECORDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Hz to 100 kHz dBPHONO (MM) . . . . . . . . . . . . . . 20 Hz to 20 kHz 0.5 dBTone control (When VOLUME is set to 30 dB)Bass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 dB (

15、100 Hz)Treble . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 dB (10 kHz)Signal-to-Noise Ratio (IHF SHORTED, A-NETWORK)SACD/CD, NETWORK, RECORDER . . . . . . . . . . .100 dBPHONO (MM, 5.5 mV input) . . . . . . . . . . . . . . . . . .80 dBTotal Harmonic DistortionSACD/CD, NETWORK, RECORDER .

16、 . . . . 0.01 % or less(1 kHz, 50 W, 8 )Speaker load impedanceA, B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 to 16 A+B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 16 Tuner SectionFrequency Range (FM) . . . . . . . . . .87.5 MHz to 108 MHzAntenna

17、Input (FM). . . . . . . . . . . . . . . . 75 unbalancedFrequency Range (AM). . . . . . . . . . .531 kHz to 1602 kHzAntenna (AM) . . . . . . . . . . . . . . . . . . . . . . . Loop antennaMiscellaneousPower requirements . . . .AC 220 V to 230 V, 50 Hz/60 HzPower consumption . . . . . . . . . . . . . .

18、 . . . . . . . . . . 210 WIn standby. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 WDimensions . . . . . . . . . . . 435 mm (W) x 142.5 mm (H) x 364 mm (D)Weight (without package) . . . . . . . . . . . . . . . . . . . 8.3 kgAccessories AccessoriesRemote control . . . . . . . . . .

19、 . . . . . . . . . . . . . . . . . . . . . . .1AAA/IEC R03 dry cell batteries . . . . . . . . . . . . . . . . . . . .2AM loop antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1FM wire antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Power cordWarranty card

20、Quick start guideSafety BrochureOperating instructions (CD-ROM) Note Specifications 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.Remote C

21、ontrol(8300764700010-IL)AAA size IEC R03 dry cell batteries x2AM loop antenna(E601019000010-IL)Power cord(L068250160020-IL)Warranty cardCD-ROM (Operating instructions)(6517000001020-IL)SX-20-K/-SFM wire antenna(E605010140010-IL)Quick start guide(5707000007450-IL)Safety Brochure(5227000002540-IL)5SX-

22、20-K56785678ABCDEF3. 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 f

23、or 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 a

24、n 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 4Check DIRECT functionsThe tone control should be disabled by set

25、ting DIRECT function to ON.6 Check SPEAKER A/B and headphone terminal There should not be defect in sound such5Check the tuner (AM and FM) operationsAudio and operations must be normal. as noise 7 Check the external package Check scratch or taint is not generated after accepting the repair 6SX-20-K1

26、234ABCDEF12343.2 PCB LOCATIONSFRONT ASSYMAIN ASSYABRMC ASSYFLED ASSYESPK SW AB ASSYGGUIDE R ASSYPOWER SW ASSYCHP ASSYDGUIDE C ASSY NSP 1.PCB TTL ASSY MAIN 7025HK1204010-IL 2.MAIN ASSY 7028072771010-IL NSP 1.PCB TTL ASSY FRONT 7025HK1204011-IL 2.FRONT ASSY 7028072761010-IL 2.LED ASSY 7028072762010-IL

27、 2.POWER SW ASSY 7028072763010-IL 2.SPK SW AB ASSY 7028072764010-IL 2.RMC ASSY 7028072765010-IL 2.HP ASSY 7028072766010-IL 2.GUIDE C ASSY 7028072767010-IL 2.GUIDE R ASSY 7028072768010-ILMark No. DescriptionPart No.Mark No. DescriptionPart No.LIST OF ASSEMBLIESNOTES: - Parts marked by “NSP” are gener

28、ally 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.7SX-20-K56785678ABCDEF8SX-20-K1234ABCDEF12344. BLOCK DIAG

29、RAM4.1 OVERALL WIRING DIAGRAMBFRONT ASSY(7028072761010-IL)(7028072771010-IL)MAIN ASSYA1/2 -(A2/2 )A9SX-20-K56785678ABCDEFGSPK SW AB ASSY(7028072764010-IL)CPOWER SW ASSY(7028072763010-IL)ELED ASSY(7028072762010-IL)FRMC ASSY(7028072765010-IL)DHP ASSY(7028072766010-IL)10SX-20-K1234ABCDEF12344.2 SIGNAL

30、BLOCK DIAGRAMBFRONT ASSYMAIN ASSYAIC605IC601IC101FLT400IC400IC700IC105IC104IC103IC106PACK10111SX-20-K56785678ABCDEFIC502IC503IC30112SX-20-K1234ABCDEF12344.3 LEVEL and POWER SUPPLY BLOCK DIAGRAMAC 0.20AS3(FLT)DC 0.4AS2(+15V,-15V)DC3.95AS1(AMP B+/B-)SUBTRANSAC CORDMAINTRANSPOWER DIAGRALEVEL DIAGRAMIC6

31、05IC700IC60113SX-20-K56785678ABCDEFAC 0.20AS3(FLT)DC 0.4A1N40071N40071SS133T1N40071N40071SS133T1/50ST_BY RLYMTZ2.4BS2(+15V,-15V)DC3.95AS1(AMP B+/B-)POWER_DOWNMTZJ5.6BRESETSUBTRANSMAINTRANSWER DIAGRAM14SX-20-K1234ABCDEF12344.4 GND MAP DIAGRAMGND mapBACK CHASSIST3.3VV+15VV+15VV+15VV+9VGND_AGND_DVREFV-

32、15VBLUEREDST3.3VST3.3VWIRE403B(CHGND)WIRE401(NM)WIRE402(NM)C425(NM)R466(NM)C417(NM)C140(NM)C141(22uF)C142(NM)C143(22uF)C402(0.1uF)C403(0.1uF)C413(0.1uF)C449(0.1uF)C131(22uF)C134(NM)C121(10uF)C130(100uF)ealaTONEFunction/E.Vol ICE.VOLD402(NM)D403(NM)R459(NM)R218(100 ohm)R215(100 ohm)Pre Amp(+16dB)C436

33、(NM)R403(NM)WIRE402(CHGND)AC from Main TransFLFL uCOMCPU/EEPROMST3.3VST3.3VV+15VV+15VC167(10uF)C166(10uF)T/OUT_+5VV-15VREFERENCEPOINTV+6VV-6VJ367(NM)J369(NM)J370(NM)J159(NM)J311(0 ohm)SACD/CDNETWORKREC_INREC_OUTPHONOTUNERBD109(NM)R804(0 ohm)J393(0 ohm)C713(0.022uF)C715 (NM)Screw(CHGND)Screw(CHGND)Sc

34、rew(CHGND)Screw(CHGND)C132R(NM)C707R(47uF)C132L(NM)C707L(47uF)GW1 GND(NM)V-30V(for FL)D407(KDS4148)D406(KDS4148)C713 (0.01uF)MAIN ASSYADHP ASSYCPOWER SW ASSYELED ASSYFRMC ASSYGSPK SWAB ASSYBFRONT ASSYIC400IC102IC101IC700IC103IC106IC105IC601IC605J301(0 ohm)J373(0 ohm)15SX-20-K56785678ABCDEFV+24V(for

35、RELAY)+ -+ -+ -+ -V+24V(for RELAY)+ -+ -+ -CK CHASSIS+ -V+24V(for RELAY)V+15VV+BV+BV+15VV-BV-B3V3ACRELAYV-30V3V3PROTECTIONCIRCUITV-15VA_GNDS_GNDC551(NM)C509(6800uF)C510(6800uF)C542(0.047uF)C303(470uF)C308C524(NM)C525(NM)J272(0 ohm)J363(0 ohm)C550(0 ohm)GND101(CHGND)GND401(CHGND)C331(10uF)C711(NM)C71

36、2(NM)R332A(NM)C318R(0.047uF)R331A(NM)C318L(0.047uF)GT6(CHGND)GT7(CHGND)J116(0 ohm)J392(0 ohm)SP_B_RchSP_A_Rch SP_A_LchSP_B_LchC342L/R(100uF)C343L/R (NM)C344L/R(100uF)C345L/R(330pF)C340L/R(100uF)C341L/R (NM)C513(220uF)C517(1000uF)C530(100uF)C536(470uF)C502(47uF)V+24V(for RELAY)V+3V(for MUTE)V+3V(for

37、MUTE)MUTECIRCUITPower Amp(+27dB)V+24V(for RELAY)R463(NM)CHGNDS_GND(Power AMP)A_GND(15V)A_GND(Relay)CPU GND(subtrans)A_GND(TUNER)D_GND(Protection)S_GND(HEADPHONE)S_GND(PHONO)C418(0.022uF)D404(NM)D405(NM)WIRE400(CHGND)S2S1Main TransSub TransASSYIC301IC503IC502m)m)16SX-20-K1234ABCDEF12345. DIAGNOSIS5.1

38、 TROUBLESHOOTINGIs power ON?When pressed the STANDBY/ON button of the remote control unit, is there remote control signal wave?(Check the R270.)Does the STANDBY LEDlit?Is the POWER_DOWN line Low (DC0V)?(Check the J361.)Is a DC wave(rectification waveform DC +8V)in the D516 cathode side?Is there DC +

39、3.3V in 3V3 line?(Check the J361 (3V3).)YesYesNoAfter power ON, does Protection Relay (RLY501) do ON? (sound occurs click)Does the sound output from RECORDER OUT terminal?Is there DC +3.3V in FL_SW/RLY line?(Check the J182.)YesYesYesYesYesYesNoIs there DC+9.0V in +9V line?(Check the J152.)Is there s

40、ignal in IC605 pin 6/pin 27?(Check the C114L/R + pin.)Is the voltage of REC_MUTE 0 V?(Check the J310 REC_MUTE.)Is there signal in IC605 pin 1/pin 32?(Check the C103L/R + pin.)NoNoNoNoSpeaker_A No soundProduct state Power cord connection (230 V/50 Hz) Unit POWER SW: ON Power ON operation by remote co

41、ntrol SPEAKER-A selection INPUT: SACD/CDA sound does not come out from Speaker_A.A protection circuit works.(See 6. SERVICE MODE.)NoNoYesYesYesYesIC301 is defective or its solder is defective.IC101 is defective or its solder is defective.Is a AC wavein the D516 anode side?YesD516 to D519 are defecti

42、ve or Those solders are defective. D515 or D523 is defective or its solder is defective. DZ502 is defective or its solder is defective. Q300 is defective or its solder is defective. REM401 is defective or its solder is defective. Connection between CN403 - CP403 is defective. Connection between CN40

43、2 - CP402 is defective. Connection between FPC400 - FPC101 is defective.NoNo IC104 is defective or its solder is defective. Check the +15 V power supply. Q552 or Q553 is defective or its solder is defective. Q551 is defective or its solder is defective.IC605 is defective or communication defective o

44、r its solder is defective.YesIC101 is defective or its solder is defective.No JACK102 solder is defective. C103L or C103R solder is defective.NoNoNo F101 is defective. T502 is defective or its solder is defective. RLY501 is defective or its solder is defective. Q502 is defective or its solder is def

45、ective.Ia17SX-20-K56785678ABCDEFIs there DC+15V in IC601 pin 8?(Check the C141 + pin.)Is there DC-15V in IC601 pin 4?(Check the C143 - pin.)Is there signal in IC601 pin 3/pin 5?(Check the C122L/R - pin.)Is there signal in IC601 pin 1/pin 7?(Check the C601L/R + pin.)YesYesYesIs there signal in Power

46、Amp input?(Check the J335, J336.)Is there signal in Power Amp output?(Check the J122 L_HOT, J124 FR_HOT.)Is the voltage of MAIN_MUTE 0 V?(Check the J317 MAIN_MUTE.)YesIs SPK-A/RLY High?(Check the R199 SPK-A/RLY.)YesIs SPK-B/RLY High?(Check the R200 SPK-B/RLY.)YesYesYesYesNoNoNoNoIC101 is defective o

47、r its solder is defective.IC101 is defective or its solder is defective.NoIC101 is defective or its solder is defective. IC605 is defective or communication defective or its solder is defective. C122L/R solder is defective.No Q314L/R, Q316, Q317 are defective or those solders are defective. Q315 is

48、defective or its solder is defective. C601L/R solder is defective.No R218 or R215 is defective or its solder is defective. Check the 15 V power supply. Power Amp block is defective . Check a solder of Power Amp block. RLY302 is defective or its solder is defective. Q314 is defective or its solder is

49、 defective.Yes RLY301 is defective or its solder is defective. Q313 is defective or its solder is defective.No IC601 is defective or its solder is defective. D1000 to D1003 are defective or those solders are defective. Q107 or Q113 is defective or its solder is defective.aSpeaker_B No soundProduct s

50、tate Power cord connection (230 V/50 Hz) Unit POWER SW: ON Power ON operation by remote control SPEAKER-B selection INPUT: SACD/CDDoes a sound come out from Speaker_A?NoSee Speaker_A No Sound.A sound does not come out from Speaker_B.I18SX-20-K1234ABCDEF1234Is H/P_RLY High?(Check the J107 H/P_RLY.)Ye