Aiwa-CXJT8-cs-sm维修电路原理图.pdf

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1、SERVICE MANUALCOMPACT DISC DECK RECEIVERAEP ModelUK ModelE ModelAustralian ModelCX-JT8Ver 1.0 2003.049-877-255-01Sony Corporation2003D0500-1Home Audio CompanyC 2003.04Published by Sony Engineering CorporationSPECIFICATIONSCX-JT8 is the tumer, amplifier, casette deck andCD player section in JAX-T8 an

2、d JAX-PK8.TUNERFM tuning range87.5 MHz to 108 MHzFM usable sensitivity (IHF)16.8 dBfFM antenna terminal75 ohms (unbalanced)AM tuning range531 kHz to 1602 kHzAM usable sensitivity350 V/mAM antennaLoop antennaAMPLIFIERPower outputFront:Rated: 144 W + 144 W (6 ohms,T.H.D. 1 %, 1 kHz/DIN 45500)Reference

3、: 180 W + 180 W (6 ohms,T.H.D. 10 %, 1 kHz/DIN 45324)MUSIC POWER: 320 W + 320 WFront and Surround:125 W + 55 W (6 ohms, T.H.D.10 %, 1 kHz/DIN AUDIO)Total harmonic distortion0.08 % (90 W, 1 kHz, 6 ohms, DIN AUDIO)InputMD (VIDEO): 1.5 VOutputsSPEAKERS: 6 ohms or morePHONES: 32 ohms or moreCASSETTE DEC

4、KTrack format4 tracks, 2 channels stereoFrequency response50 Hz 8 kHzRecording systemAC biasHeadsDeck A: playback x 1Deck B: recording/playback x 1,erase x 1CD PLAYERLaserSemiconductor laser( = 780 nm)Emission duration:continuousD/A converter1 bit dualSignal-to-noise ratio85 dB (1 kHz, 0 dB)Harmonic

5、 distortion0.05 % (1 kHz, 0 dB)GENERALPower requirements230 V AC, 50/60 HzPower consumption210 WPower consumptionWith ECO mode on: 0.25 W in standby modeWith ECO mode off: 24 WDimensions (W x H x D)280 x 328 x 437 mmWeight10.3 kgSpecifications and external appearance are subject to change without no

6、tice. COPYRIGHTCheck copyright laws relevant to recordings from discs, or tape for the country where the unit is to be used.Licensed by BBE Sound, Inc. under USP4638258, 5510752and 5736897.(AEP, UK, CIS, E, SP, AUS) 280 x 328 x 446 mm (E51) AbbreviationAUS : Australian modelE51 : Chilean and Peruvia

7、n modelsSP: Singapore modelModel Name Using Similar MechanismNEWCDCD Mechanism TypeCDM74F-K6BD71ASectionBase Unit NameBU-K6BD71AOptical Block NameKSM-213DCPOptical Pick-up NameKSS-213DTape deckModel Name Using Similar MechanismNEWSectionTape Transport Mechanism TypeCWM43RR23RadioFans.CN 收音机爱 好者资料库CX

8、-JT82Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam-aged by heat.Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270 C dur-ing repairing. Do not touch the soldering iron o

9、n the same conductor of thecircuit board (within 3 times). Be careful not to apply force on the conductor when solderingor unsoldering.CAUTIONUse of controls or adjustments or performance of proceduresother than those specified herein may result in hazardous ra-diation exposure.SAFETY-RELATED COMPON

10、ENT WARNING!COMPONENTS IDENTIFIED BY MARK 0 OR DOTTEDLINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMSAND IN THE PARTS LIST ARE CRITICAL TO SAFEOPERATION. REPLACE THESE COMPONENTS WITHSONY PARTS WHOSE PART NUMBERS APPEAR ASSHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-LISHED BY SONY.CLASS 1 LASER PRODUCTLUOKA

11、N 1 LASER LAITEKLASS 1 LASER APPARATThis appliance is classifiedas a CLASS 1 LASERproduct.This label is located on therear exterior.RadioFans.CN 收音机爱 好者资料库CX-JT83TABLE OF CONTENTS1.SERVICING NOTES.42.GENERALLocation of Controls .73.DISASSEMBLY3-1.Disassembly Flow .93-2.Case (SIDE-L/R). 103-3.Case (T

12、op) . 103-4.Tray Panel. 113-5.CD Mechanism Deck (CDM74F-K6BD71A). 113-6.Front Panel Section . 123-7.Mechanical Deck. 123-8.Rear Cabinet Section . 133-9.Main Board. 133-10. Power Board . 143-11. Transformer Board . 143-12 Table Assy . 153-13. Motor (TB) Board . 153-14. Motor (LD) Board. 163-15. Base

13、Unit (BU-K6BD71A). 163-16. Motor Gear Assy (Sled) (M701), BD Board . 173-17. Optical Pick-up (KSS-213D) . 174.TEST MODE. 185.ELECTRICAL ADJUSTMENTSCD Section . 216.DIAGRAMS6-1.Block Diagram CD Section . 226-2.Block Diagram TUNER/TAPE/PANEL Section . 236-3.Block Diagram AMP/POWER SUPPLY Section . 246

14、-4.Note for Printed Wiring Boards andSchematic Diagrams . 256-5.Printed Wiring Board BD Board . 266-6.Schematic Diagram BD Board . 276-7.Printed Wiring Boards CHANGER Section . 286-8.Schematic Diagram CHANGER Section . 296-9.Schematic Diagram MAIN Board (1/4) (Suffix-11) . 306-10. Schematic Diagram

15、MAIN Board (2/4) (Suffix-11) . 316-11. Schematic Diagram MAIN Board (3/4) (Suffix-11) . 326-12. Schematic Diagram MAIN Board (4/4) (Suffix-11) . 336-13. Printed Wiring Board MAIN Board (Suffix-11) . 346-14. Printed Wiring Board MAIN Board (Suffix-13) . 356-15. Schematic Diagram MAIN Board (1/4) (Suf

16、fix-13) . 366-16. Schematic Diagram MAIN Board (2/4) (Suffix-13) . 376-17. Schematic Diagram MAIN Board (3/4) (Suffix-13) . 386-18. Schematic Diagram MAIN Board (4/4) (Suffix-13) . 396-19. Printed Wiring Board POWER Board (AEP, UK, CIS, E51 models). 406-20. Printed Wiring Board POWER Board (E, SP, A

17、US models) . 416-21. Schematic Diagram POWER Board (1/2) . 426-22. Schematic Diagram POWER Board (2/2) . 436-23. Printed Wiring Boards CD BUTTON/HEADPHONE/MICROPHONE Boards . 446-24. Schematic Diagram CD BUTTON/HEADPHONE/MICROPHONE Boards . 456-25. Printed Wiring Board PANEL Board . 466-26. Schemati

18、c Diagram PANEL Board . 476-27. Printed Wiring Board TRANSFORMER Board (AEP, UK, CIS, E51 models). 486-28. Printed Wiring Board TRANSFORMER Board (E, SP, AUS models) . 496-29. Schematic Diagram TRANSFORMER Board (AEP, UK, CIS, E51 models). 506-30. Schematic Diagram TRANSFORMER Board (E, SP, AUS mode

19、ls) . 516-31. IC Pin Function Description . 557.EXPLODED VIEWS7-1.Case Section . 617-2.Front Panel Section-1. 627-3.Front Panel Section-2. 637-4.Front Panel Section-3. 647-5.Front Panel Section-4. 657-6.Chassis Section-1 . 667-7.Chassis Section-2 . 677-8.CD Mechanism Deck Section-1(CDM74F-K6BD71A) .

20、 687-9.CD Mechanism Deck Section-2(CDM74F-K6BD71A) . 697-10. CD Mechanism Deck Section-3(CDM74F-K6BD71A) . 707-11. Base Unit Section (BU-K6BD71A) . 718.ELECTRICAL PARTS LIST. 72 AbbreviationAUS : Australian modelE51: Chilean and Peruvian modelsSP: Singapore modelRadioFans.CN 收音机爱 好者资料库4CX-JT8SECTION

21、 1SERVICING NOTESNOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNITThe laser diode in the optical pick-up block may suffer electro-static break-down because of the potential difference generatedby the charged electrostatic load, etc. on clothing and the humanbody.During repair, pay attention to

22、 electrostatic break-down and alsouse the procedure in the printed matter which is included in therepair parts.The flexible board is easily damaged and should be handled withcare.NOTES ON LASER DIODE EMISSION CHECKThe laser beam on this model is concentrated so as to be focusedon the disc reflective

23、 surface by the objective lens in the opticalpick-up block. Therefore, when checking the laser diode emis-sion, observe from more than 30 cm away from the objective lens.LASER DIODE AND FOCUS SEARCH OPERATIONCHECKCarry out the “S curve check” in “CD section adjustment” andcheck that the S curve wave

24、forms is output three times. MODEL IDENTIFICATION Back Panel MODELPART No.Chilean and Peruvian models4-245-109-0AEP, UK, CIS and Australian models4-245-109-2E and Singapore models4-245-109-7PART No.UNLEADED SOLDERBoards requiring use of unleaded solder are printed with the lead-free mark (LF) indica

25、ting the solder contains no lead.(Caution: Some printed circuit boards may not come printed withthe lead free mark due to their particular size): LEAD FREE MARKUnleaded solder has the following characteristics. Unleaded solder melts at a temperature about 40 C higher thanordinary solder.Ordinary sol

26、dering irons can be used but the iron tip has to beapplied to the solder joint for a slightly longer time.Soldering irons using a temperature regulator should be set toabout 350 C.Caution: The printed pattern (copper foil) may peel away if theheated tip is applied for too long, so be careful! Strong

27、 viscosityUnleaded solder is more viscou-s (sticky, less prone to flow)than ordinary solder so use caution not to let solder bridges oc-cur such as on IC pins, etc. Usable with ordinary solderIt is best to use only unleaded solder but unleaded solder mayalso be added to ordinary solder.D324CN309IC30

28、3CN312 MAIN BOARD (Conductor Side) DISCRIMINATIONEither type of the MAIN board, Part No. 1-688-080-11 or 1-688-080-13 is used for Chilean and Peruvian models.Note: For other models, only one type of the MAIN board, Part No. 1-688-080-13 is used.How to identify the type is described below.D324Suffix-

29、11Suffix-13aRadioFans.CN 收音机爱 好者资料库5CX-JT8HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF.2 Turn the loading gear in the direction of arrow A.1 Remove the case (side-L).A3 Pull-out the disc tray.RadioFans.CN 收音机爱 好者资料库6CX-JT8SERVICE POSITION CD mechanism deck Tape mechanism deck main board (CN

30、312)Connect wire (flat type) (19 core) tomain board (CN312) and BD board (CN710).BD board (CN710)Connect wire (flat type) (13 core) topanel board (CN601) and mechanical deck.panel board (CN601)main board (CN203)RadioFans.CN 收音机爱 好者资料库7CX-JT8SECTION 2GENERALThis section is extracted frominstruction m

31、anual. LOCATION OF CONTROLSEnMain unit: rearRefer to the pages indicated in parentheses for details.1 AM LOOP, FM 75 terminalsPlug in the supplied AM and FM antennas here.2 MD (VIDEO) jacksAccepts analog sound signals from external equipment.Connect using an optional connecting cable with RCAphono p

32、lugs (red plug to R jack, white plug to L jack).Refer also to the operating instructions of your equipment.To switch function to external input, press MD (VIDEO).Tip:To change the displayed name for this function, turn the unit on, then hold down MD (VIDEO) and press POWERon the unit. Repeat the pro

33、cedure to select MD or “VIDEO.3 SURROUND SPEAKER terminalsConnect for each speaker the blue cord to the 0 terminaland the black cord to the 9 terminal.FRONT SPEAKER terminalsConnect for each speaker the red cord to the 0 terminaland the black cord to the 9 terminal.4 AC power cord5 AC VOLTAGE select

34、or (Chilean and Peruvian models)Switches AC voltage among 120V, 220V, and 230V- 240V.Make sure it matches your local voltage.En1 DISC CHANGE/DISC SKIPRotates the CD trays.2 POWER 6STANDBY/ON Switches the unit on and off (standby).The red indicator flashes when receiving a signal fromthe remote.3 TAP

35、E A/BSelects Tape function, and deck A or B.TUNER BANDSelects Tuner function and the radio band.MD (VIDEO)Selects the function of external equipment connected toMD (VIDEO) jacks.CDSelects CD function.4 TREBLE/MIDDLEEnhances high or middle frequency sound.5 CD SYNCStarts Automatic CD dubbing.REC PAUS

36、E/START Starts recording.6 PHONES jackPlug in here an optional headphones set with a ministereo plug (3.5 mm). Speaker output is canceled.MIC jack (Except AEP, UK and CIS models) Connects the microphone here.MIC MIXING (Except AEP, UK and CIS models) Adjusts the microphone volume.Main unit: frontRef

37、er to the pages indicated in parentheses for details.7 DISC DIRECT PLAY 1-3Selects a disc.8 zOPEN/CLOSEOpens or closes the disc compartment.9 HEAVY, VOCAL, SALSA, TECHNO,HIP HOP, MANUALActivates a graphic equalization curve.0 MODESelects various modes (Play mode and Tape reverse, when used in combin

38、ation with ENTER and MULTI ENTERFixes the modes and the time (Play mode and reverse, etc.) when used in combination with MODE MULTI JOG.! MULTI JOGCD: skips to a previous or a succeeding track.Tuner: selects a preset station.Clock and Timer: sets the time.Selects the mode and the time when used in c

39、ombinationwith MODE and ENTER. VOLUMEAdjusts the volume.# BASSAdjusts low frequency sound.SURROUNDSwitches surround on and off.i-BassProduces rich and clear low frequency sound.$ DISPLAYDisplays the time and the remaining time for CD.When the unit is off, press DISPLAY to switch betweenDEMO, Clock a

40、nd ECO display modes.ALBUM k/iSelects a previous album or a succeeding album withMP3-CDs.PTY (AEP and UK models)Displays a program type for RDS (Radio Data System)% rTUNING DOWN, tTUNING UP( f , g)CD: searches a track in fast forward or fast reverseplayback when held down.Tape: fast forwards or rewi

41、nds the tape.Tuner: manually tunes down or up within the band.aPAUSECD and Tapes: pauses playback.dDIRECTIONCD and Tapes: starts playback.sSTOPCD and Tapes: stops playback.RadioFans.CN 收音机爱 好者资料库8CX-JT8EnButtons with the same or similar names with the main unit basically have the same function.1 POW

42、ER2 1-0/10, +10Selects a CD track of the specified number.The numbered buttons take on these functions below when pressedtogether with SHIFT held down:EDITEnters Automatic CD dubbing mode when pressed instop mode.BANDSelects Tuner function and the radio band.TAPE A/BSelects Tape function, and deck A

43、 or B.SPECTRUMChanges the spectrum analyzer display.KARAOKE (Except AEP, UK and CIS models)Selects Vocal Fader mode.GEQEnters Graphic Equalizer setting mode.TUNER MEMORYTuner: stores the received station in to preset.SURROUNDSwitches surround on and off.3 r, tCD: selects a track.Tuner: selects a pre

44、set station.BASS, MID and TREBLE: adjusts the level.Clock and Timer: sets the time.4 ALBUM M/NSelects a previous album or a succeeding album.5 PLAY MODECD: selects a playback mode.Tape: selects a reverse modeREPEATEnters CD repeat playback mode.ENTER6 CLOCK/TIMER/SETEnters timer setting mode.CLOCK/T

45、IMER/SELECTSelects timer playback, timer recording or timer off.7 DISPLAYDisplays the time and the remaining time for CD.When the unit is off, press DISPLAY to switch betweenDEMO, Clock and ECO display modes.8 SHIFTHold down when pressing a numbered button to changeits function to that printed above

46、 the number.e.g.)“Press SHIFT+BAND on the remote” indicates “Holddown SHIFT and press 2 (BAND)”. Doing so makes be able to select Tuner function and the radio band.Remote controlRefer to the pages indicated in parentheses for details.9 FUNCTIONSwitches the active function among CD, TAPE, TUNERand MD

47、 (VIDEO).0 DISC SKIPSelect a disc.! c/ dCD and Tape: starts playback.sCD and Tape: stops playback.f, gCD: searches a track in fast forward or fast reverseplayback when held down.Tape: fast forwards or rewinds the tape.Tuner: manually tunes down or up within the band.a CD and Tape: pauses playback. S

48、LEEPSwitches the sleep-timer on/off and selects the duration.# VOLUME (+, -)Adjusts the volume.$ SOUNDSelects BASS, MID or TREBLE setting modeCLEARClears a track of the CD programmed playback and aRadio preset station.NoteThe buttons not explained above (KARAOKE(AEP, UK and CIS models) do notoperate

49、 for this unit.TUNER MODESwitches between stereo or monaural FM reception.Setting the clockUse the remote.1Press CLOCK/TIMER/SET.Go to step 3 when the time appears and the hour flashes.2Press r or t repeatedly until “CLOCK ”appears in the display and then press ENTER.3Press r or t repeatedly to set

50、the hourand then press ENTER.4Press r or t repeatedly to set the minuteand then press ENTER.The time display stops flashing and the clock starts from00 seconds.MULTI JOG is also available in place of r or t.To display the timePress DISPLAY. The time will be displayed for 6 seconds.Tip: (Except AEP,