Aiwa-CXJT8-cs-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL COMPACT DISC DECK RECEIVER AEP Model UK Model E Model Australian Model CX-JT8 Ver 1.0 2003.04 9-877-255-01Sony Corporation 2003D0500-1Home Audio Company C 2003.04Published by Sony Engineering Corporation SPECIFICATIONS CX-JT8 is the tumer, amplifier, casette deck and CD player section

2、 in JAX-T8 and JAX-PK8. TUNER FM tuning range87.5 MHz to 108 MHz FM usable sensitivity (IHF)16.8 dBf FM antenna terminal75 ohms (unbalanced) AM tuning range531 kHz to 1602 kHz AM usable sensitivity350 V/m AM antennaLoop antenna AMPLIFIER Power outputFront: Rated: 144 W + 144 W (6 ohms, T.H.D. 1 %, 1

3、 kHz/DIN 45500) Reference: 180 W + 180 W (6 ohms, T.H.D. 10 %, 1 kHz/DIN 45324) MUSIC POWER: 320 W + 320 W Front 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 V OutputsSPEAKERS: 6 ohms or more P

4、HONES: 32 ohms or more CASSETTE DECK Track format4 tracks, 2 channels stereo Frequency response50 Hz 8 kHz Recording systemAC bias HeadsDeck A: playback x 1 Deck B: recording/playback x 1, erase x 1 CD PLAYER LaserSemiconductor laser ( = 780 nm) Emission duration: continuous D/A converter1 bit dual

5、Signal-to-noise ratio85 dB (1 kHz, 0 dB) Harmonic distortion0.05 % (1 kHz, 0 dB) GENERAL Power requirements230 V AC, 50/60 Hz Power consumption210 W Power consumptionWith ECO mode on: 0.25 W in standby modeWith ECO mode off: 24 W Dimensions (W x H x D)280 x 328 x 437 mm Weight10.3 kg Specifications

6、and external appearance are subject to change without notice. COPYRIGHT Check 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, 5510752 and 5736897. (AEP, UK, CIS, E, SP, AUS) 280 x 328 x 446 mm (E51)

7、 Abbreviation AUS : Australian model E51 : Chilean and Peruvian models SP: Singapore model Model Name Using Similar MechanismNEW CD CD Mechanism TypeCDM74F-K6BD71A Section Base Unit NameBU-K6BD71A Optical Block NameKSM-213DCP Optical Pick-up NameKSS-213D Tape deck Model Name Using Similar MechanismN

8、EW Section Tape Transport Mechanism TypeCWM43RR23 RadioFans.CN 收音机爱 好者资料库 CX-JT8 2 Notes 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

9、soldering iron around 270 C dur- ing repairing. Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering. CAUTION Use of controls or adjustments or performance of procedures other than th

10、ose specified herein may result in hazardous ra- diation exposure. SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS

11、APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY. CLASS 1 LASER PRODUCT LUOKAN 1 LASER LAITE KLASS 1 LASER APPARAT This appliance is classified as a CLASS 1 LASER product. This label is located on the rear exterior. RadioFans.CN 收音机爱 好者资料库 CX-JT8 3 TABLE OF CONTENTS 1.SERVICING N

12、OTES.4 2.GENERAL Location of Controls .7 3.DISASSEMBLY 3-1.Disassembly Flow .9 3-2.Case (SIDE-L/R). 10 3-3.Case (Top) . 10 3-4.Tray Panel. 11 3-5.CD Mechanism Deck (CDM74F-K6BD71A). 11 3-6.Front Panel Section . 12 3-7.Mechanical Deck. 12 3-8.Rear Cabinet Section . 13 3-9.Main Board. 13 3-10. Power B

13、oard . 14 3-11. Transformer Board . 14 3-12 Table Assy . 15 3-13. Motor (TB) Board . 15 3-14. Motor (LD) Board. 16 3-15. Base Unit (BU-K6BD71A). 16 3-16. Motor Gear Assy (Sled) (M701), BD Board . 17 3-17. Optical Pick-up (KSS-213D) . 17 4.TEST MODE. 18 5.ELECTRICAL ADJUSTMENTS CD Section . 21 6.DIAG

14、RAMS 6-1.Block Diagram CD Section . 22 6-2.Block Diagram TUNER/TAPE/PANEL Section . 23 6-3.Block Diagram AMP/POWER SUPPLY Section . 24 6-4.Note for Printed Wiring Boards and Schematic Diagrams . 25 6-5.Printed Wiring Board BD Board . 26 6-6.Schematic Diagram BD Board . 27 6-7.Printed Wiring Boards C

15、HANGER Section . 28 6-8.Schematic Diagram CHANGER Section . 29 6-9.Schematic Diagram MAIN Board (1/4) (Suffix-11) . 30 6-10. Schematic Diagram MAIN Board (2/4) (Suffix-11) . 31 6-11. Schematic Diagram MAIN Board (3/4) (Suffix-11) . 32 6-12. Schematic Diagram MAIN Board (4/4) (Suffix-11) . 33 6-13. P

16、rinted Wiring Board MAIN Board (Suffix-11) . 34 6-14. Printed Wiring Board MAIN Board (Suffix-13) . 35 6-15. Schematic Diagram MAIN Board (1/4) (Suffix-13) . 36 6-16. Schematic Diagram MAIN Board (2/4) (Suffix-13) . 37 6-17. Schematic Diagram MAIN Board (3/4) (Suffix-13) . 38 6-18. Schematic Diagram

17、 MAIN Board (4/4) (Suffix-13) . 39 6-19. Printed Wiring Board POWER Board (AEP, UK, CIS, E51 models). 40 6-20. Printed Wiring Board POWER Board (E, SP, AUS models) . 41 6-21. Schematic Diagram POWER Board (1/2) . 42 6-22. Schematic Diagram POWER Board (2/2) . 43 6-23. Printed Wiring Boards CD BUTTON

18、/ HEADPHONE/MICROPHONE Boards . 44 6-24. Schematic Diagram CD BUTTON/ HEADPHONE/MICROPHONE Boards . 45 6-25. Printed Wiring Board PANEL Board . 46 6-26. Schematic Diagram PANEL Board . 47 6-27. Printed Wiring Board TRANSFORMER Board (AEP, UK, CIS, E51 models). 48 6-28. Printed Wiring Board TRANSFORM

19、ER Board (E, SP, AUS models) . 49 6-29. Schematic Diagram TRANSFORMER Board (AEP, UK, CIS, E51 models). 50 6-30. Schematic Diagram TRANSFORMER Board (E, SP, AUS models) . 51 6-31. IC Pin Function Description . 55 7.EXPLODED VIEWS 7-1.Case Section . 61 7-2.Front Panel Section-1. 62 7-3.Front Panel Se

20、ction-2. 63 7-4.Front Panel Section-3. 64 7-5.Front Panel Section-4. 65 7-6.Chassis Section-1 . 66 7-7.Chassis Section-2 . 67 7-8.CD Mechanism Deck Section-1 (CDM74F-K6BD71A) . 68 7-9.CD Mechanism Deck Section-2 (CDM74F-K6BD71A) . 69 7-10. CD Mechanism Deck Section-3 (CDM74F-K6BD71A) . 70 7-11. Base

21、 Unit Section (BU-K6BD71A) . 71 8.ELECTRICAL PARTS LIST. 72 Abbreviation AUS : Australian model E51: Chilean and Peruvian models SP: Singapore model RadioFans.CN 收音机爱 好者资料库 4 CX-JT8 SECTION 1 SERVICING NOTES NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick

22、-up block may suffer electro- static break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the rep

23、air parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser

24、diode emis- sion, observe from more than 30 cm away from the objective lens. LASER DIODE AND FOCUS SEARCH OPERATION CHECK Carry out the “S curve check” in “CD section adjustment” and check that the S curve waveforms is output three times. MODEL IDENTIFICATION Back Panel MODELPART No. Chilean and Per

25、uvian models4-245-109-0 AEP, UK, CIS and Australian models4-245-109-2 E and Singapore models4-245-109-7 PART No. UNLEADED SOLDER Boards requiring use of unleaded solder are printed with the lead- free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not com

26、e printed with the lead free mark due to their particular size) : LEAD FREE MARK Unleaded solder has the following characteristics. Unleaded solder melts at a temperature about 40 C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joi

27、nt for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350 C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful! Strong viscosity Unleaded solder is more viscou-s (sticky, less prone to flow)

28、 than ordinary solder so use caution not to let solder bridges oc- cur such as on IC pins, etc. Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder. D324 CN309 IC303 CN312 MAIN BOARD (Conductor Side) DISCRIMINATION Either type o

29、f 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. D324 Suffix-11 Suffix-13a 5 CX-JT8 HOW TO OPEN THE DISC TRAY WHEN PO

30、WER SWITCH TURNS OFF. 2 Turn the loading gear in the direction of arrow A. 1 Remove the case (side-L). A 3 Pull-out the disc tray. 6 CX-JT8 SERVICE POSITION CD mechanism deck Tape mechanism deck main board (CN312) Connect wire (flat type) (19 core) to main board (CN312) and BD board (CN710). BD boar

31、d (CN710) Connect wire (flat type) (13 core) to panel board (CN601) and mechanical deck. panel board (CN601) main board (CN203) 7 CX-JT8 SECTION 2 GENERAL This section is extracted from instruction manual. LOCATION OF CONTROLS En Main unit: rear Refer to the pages indicated in parentheses for detail

32、s. 1 AM LOOP, FM 75 terminals Plug in the supplied AM and FM antennas here. 2 MD (VIDEO) jacks Accepts analog sound signals from external equipment. Connect using an optional connecting cable with RCA phono plugs (red plug to R jack, white plug to L jack). Refer also to the operating instructions of

33、 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 POWER on the unit. Repeat the procedure to select MD or “VIDEO. 3 SURROUND SPEAKER terminals Connect for each speaker th

34、e blue cord to the 0 terminal and the black cord to the 9 terminal. FRONT SPEAKER terminals Connect for each speaker the red cord to the 0 terminal and the black cord to the 9 terminal. 4 AC power cord 5 AC VOLTAGE selector (Chilean and Peruvian models) Switches AC voltage among 120V, 220V, and 230V

35、- 240V. Make sure it matches your local voltage. En 1 DISC CHANGE/DISC SKIP Rotates the CD trays. 2 POWER 6STANDBY/ON Switches the unit on and off (standby). The red indicator flashes when receiving a signal from the remote. 3 TAPE A/B Selects Tape function, and deck A or B. TUNER BAND Selects Tuner

36、 function and the radio band. MD (VIDEO) Selects the function of external equipment connected to MD (VIDEO) jacks. CD Selects CD function. 4 TREBLE/MIDDLE Enhances high or middle frequency sound. 5 CD SYNC Starts Automatic CD dubbing. REC PAUSE/START Starts recording. 6 PHONES jack Plug in here an o

37、ptional headphones set with a mini stereo 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: front Refer to the pages indicated in parentheses for detai

38、ls. 7 DISC DIRECT PLAY 1-3 Selects a disc. 8 zOPEN/CLOSE Opens or closes the disc compartment. 9 HEAVY, VOCAL, SALSA, TECHNO, HIP HOP, MANUAL Activates a graphic equalization curve. 0 MODE Selects various modes (Play mode and Tape reverse, when used in combination with ENTER and MULTI ENTER Fixes th

39、e modes and the time (Play mode and reverse, etc.) when used in combination with MODE MULTI JOG. ! MULTI JOG CD: 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 combination with MODE and ENTER. VOL

40、UME Adjusts the volume. # BASS Adjusts low frequency sound. SURROUND Switches surround on and off. i-Bass Produces rich and clear low frequency sound. $ DISPLAY Displays the time and the remaining time for CD. When the unit is off, press DISPLAY to switch between DEMO, Clock and ECO display modes. ALBUM k/i Selects a previous album or a succeeding album with MP3-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 reverse playback when held down. Ta