Aiwa-CX-JN3-Service-Manual 电路图 维修手册.pdf

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1、SERVICE MANUAL Model Name Using Similar MechanismNEW CD Mechanism Type CDM74-K6BD71A, CDM74S-K6BD71A, CDM74S-K6BD72 CD Base Unit NameBU-K6BD71A, BU-K6BD72 Section Optical Block NameKSM-213DCP Optical Pick-up NameKSS-213D Tape deck Model Name Using Similar MechanismNEW Section Tape Transport Mechanis

2、m TypeCWM43FF13, CWM43FF25 COMPACT DISC DECK RECEIVER US Model AEP Model UK Model E Model CX-JN3 Ver. 1.2 2005.05 9-877-248-03Sony Corporation 2005E05-1Personal Audio Group 2005.05Published by Sony Engineering Corporation SPECIFICATIONS CX-JN3 is the amplifier, CD player, tape deck and tuner section

3、 in JAX-N3/PK3. TUNER FM tuning range87.5 MHz to 108 MHz FM usable sensitivity (IHF) 13.2 dBf FM antenna terminal75 ohms (unbalanced) AM tuning range530 kHz to 1710 kHz (10 kHz step) 531 kHz to 1710 kHz (9 kHz step) AM usable sensitivity350 V/m AM antennaLoop antenna AMPLIFIER Power output40 W + 40

4、W (40 Hz - 20 kHz, THD less than 1 %, 6 ohms) 50 W + 50 W (1 kHz, THD less than 10 %, 6 ohms) Total harmonic distortion0.08 % (20 W, 1 kHz, 6 ohms) InputVIDEO/AUX: 400 mV OutputsSPEAKERS: 6 ohms or more PHONES: 32 ohms or more CASSETTE DECK Track format4 tracks, 2 channels stereo Frequency response5

5、0 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 Signal-to-noise ratio85 dB (1 kHz, 0 dB) Harmonic distortion0.05 % (1 kHz, 0 dB) GENERAL Power r

6、equirements120 V AC, 60 Hz Power consumption65 W Power consumptionWith ECO mode on: 0.25 W in standby modeWith ECO mode off: 15 W Dimensions (W x H x D)280 x 330 x 392.5 mm (11 1/8 x 13 x 15 1/2 in.) Weight6.7 kg (14 lbs 12 oz) Specifications and external appearance are subject to change without not

7、ice. 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. RadioFans.CN 收音机爱 好者资料库 CX-JN3 2 Notes on chip component replacement Never reuse a disconnected chip compone

8、nt. 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 on the same conductor of the circuit board (within 3 times). Be careful not to

9、 apply force on the conductor when soldering or unsoldering. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK

10、0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY. The following caution label is located inside the unit. This appliance is classified as

11、a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior. SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety check before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs, scre

12、ws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE TEST The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes.). Leakage c

13、urrent can be measured by any one of three methods. 1.A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers instructions to use these instruments. 2.A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3.Measu

14、ring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indica- tion is 0.75 V, so analog meters must have an accurate low- voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex- amples of a passive VOM that is suitable. Nearly all battery operated

15、digital multimeters that have a 2 V AC range are suit- able. (See Fig. A) Fig. A.Using an AC voltmeter to check AC leakage. 1.5 k0.15 F AC voltmeter (0.75 V) To Exposed Metal Parts on Set Earth Ground RadioFans.CN 收音机爱 好者资料库 CX-JN3 3 TABLE OF CONTENTS 1.SERVICING NOTES.4 2.GENERAL Location of Contro

16、ls .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 (CDM74-K6BD71A, CDM74S-K6BD71A, CDM74S-K6BD72). 11 3-6.Front Panel Section . 12 3-7.Mechanical Deck (CWM43FF13, CWM43FF25) . 12 3-8.Rear Cabinet Section . 13 3-9.PT Board,

17、 MAIN Board. 13 3-10. Table Assy . 14 3-11. Motor (TB) Board . 14 3-12. Motor (LD) Board. 15 3-13. Base Unit (BU-K6BD71A, BU-K6BD72) . 15 3-14. Motor Gear Assy (Sled) (M701), BD Board . 16 3-15. Optical Pick-up (KSS-213D). 16 4.TEST MODE. 17 5.ELECTRICAL ADJUSTMENTS CD Section . 19 6.DIAGRAMS 6-1.Bl

18、ock Diagram CD Section . 20 6-2.Block Diagram TUNER/TAPE/PANEL Section . 21 6-3.Block Diagram AMP/POWER SUPPLY Section . 22 6-4.Note for Printed Wiring Boards and Schematic Diagrams . 23 6-5.Printed Wiring Board BD Section (EXCEPT US model). 24 6-6.Schematic Diagram BD Section (EXCEPT US model). 25

19、6-7.Printed Wiring Board BD Section (US model) . 26 6-8.Schematic Diagram BD Section (US model). 27 6-9.Printed Wiring Boards CHANGER Section . 28 6-10. Schematic Diagram CHANGER Section . 29 6-11. Schematic Diagram MAIN Section (1/4) . 30 6-12. Schematic Diagram MAIN Section (2/4) . 31 6-13. Schema

20、tic Diagram MAIN Section (3/4) . 32 6-14. Schematic Diagram MAIN Section (4/4) . 33 6-15. Printed Wiring Board MAIN Section . 34 6-16. Printed Wiring Board HP Section . 35 6-17. Schematic Diagram HP Section . 35 6-18. Printed Wiring Board PANEL Section . 36 6-19. Schematic Diagram PANEL Section . 37

21、 6-20. Printed Wiring Boards KEY Section . 38 6-21. Schematic Diagram KEY Section . 39 6-22. Printed Wiring Board PT Section (EXCEPT Chilean and Peruvian models) . 40 6-23. Schematic Diagram PT Section (EXCEPT Chilean and Peruvian models) . 41 6-24. Printed Wiring Board PT Section (Chilean and Peruv

22、ian models). 42 6-25. Schematic Diagram PT Section (Chilean and Peruvian models). 43 6-26. IC Pin Function Description . 47 7.EXPLODED VIEWS 7-1.Case Section . 49 7-2.Front Panel Section-1. 50 7-3.Front Panel Section-2. 51 7-4.Front Panel Section-3. 52 7-5.Front Panel Section-4. 53 7-6.Chassis Secti

23、on . 54 7-7.CD Mechanism Deck Section-1 (CDM74-K6BD71A, CDM74S-K6BD71A, CDM74S-K6BD72). 55 7-8.CD Mechanism Deck Section-2 (CDM74-K6BD71A, CDM74S-K6BD71A, CDM74S-K6BD72). 56 7-9.CD Mechanism Deck Section-3 (CDM74-K6BD71A, CDM74S-K6BD71A, CDM74S-K6BD72). 57 7-10. Base Unit Section (BU-K6BD71A, BU-K6B

24、D72). 58 8.ELECTRICAL PARTS LIST. 59 RadioFans.CN 收音机爱 好者资料库 4 CX-JN3 SECTION 1 SERVICING NOTES NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electro- static break-down because of the potential difference generated by the charged ele

25、ctrostatic 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 repair parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION C

26、HECK 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 diode emis- sion, observe from more than 30 cm away from the objective lens. LASER DIODE AND FOCUS SEARCH OPERAT

27、ION 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. US model4-245-162-0 Chilean and Peruvian models4-245-162-2 AEP, UK and CIS models4-245-162-3 Mexican model (MADE IN Mexico)4-24

28、5-162-7 Mexican model (MADE IN China)4-245-162-8 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 come printed with the lead free mark due to their particul

29、ar 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 joint for a slightly longer time. Soldering irons using a

30、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) than ordinary solder so use caution not to let solder

31、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. 5 CX-JN3 HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF. 3Pull-out the disc tray. 1Remove the case (side-L). 2Turn the loading

32、gear in the direction of arrow A. A 6 CX-JN3 SERVICE POSITION CD mechanism deck Tape mechanism deck main board (CN691) Connect wire (flat type) (19 core) to main board (CN691) and BD board (CN710). BD board (CN710) Connect wire (flat type) (13 core) to panel board (CN601) and mechanical deck. panel

33、board (CN601) main board (CN301) 7 CX-JN3 SECTION 2 GENERAL This section is extracted from instruction manual. LOCATION OF CONTROLS 1DISC CHANGE Rotates the CD trays. 2POWER 6 STANDBY/ON Switches the unit on and off (standby). The red indicator flashes when receiving a signal from the remote. 3MODE

34、Selects various modes (ECO and Repeat/Shuffle/ Programed playback, etc.) when used in combination with ENTER and MULTI JOG. 4ENTER Fixes the modes and the time (ECO, Repeat/Shuffle/ Programed playback, clock, and timer, etc.) when used in combination with ENTER and MULTI JOG. !Remote sensor Receives

35、 a signal from the remote. VOLUME Adjusts the volume. #TREBLE Enhances high frequency sound. $BASS Emphasizes low frequency sound. %i-Bass Produces rich and clear low frequency sound. c PLAY/PRESET When the unit is turned off: activates or deactivates DEMO. CD and Tape: starts playback. Tuner: tunes

36、 into a preset station. s STOP/CLEAR CD and Tape: stops playback. Tuner: clears a station preset. fTUNING DOWN, gTUNING UP CD: searches a track in fast foward or fast reverse playback when held down. Tape: fast forwards or rewinds the tape. Tuner: manually tunes down or up within the band. a PAUSE/S

37、ET CD and Tape: pauses playback. Tuner: stores the received station in to preset. Main unit: front 5MULTI JOG When used in combination with ENTER and MULTI JOG, CD: selects a track and Repeat/Shuffle/Programed playback. Tuner: selects a preset station. Tape: specifies tape length. Clock and Timer: s

38、ets the time. i-Bass: selects a frequency range. Spectrum analyzer, ECO and Dimmer: selects the mode. 6PHONES jack Plug in here an optional headphones set with a mini stereo plug (3.5 mm). Speaker output is canceled. 7SYNC DUB Starts dubbing a whole tape. w REC/REC MUTING Starts recording. 8DISC DIR

39、ECT PLAY 1-3 Selects a disc. 9z OPEN/CLOSE Opens or closes the disc compartment. 0TAPE A/B Selects Tape function, and deck A or B. TUNER/BAND Selects Tuner function and the radio band. VIDEO/AUX Selects the function of external equipment connected to VIDEO/AUX jacks. CD Selects CD function. Main uni

40、t: rear 1AM LOOP, FM 75 terminals Plug in the supplied AM and FM antennas here. 2VIDEO/AUX 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

41、of your equipment. To switch function to external input, press VIDEO/AUX. Tip: To change the displayed name for this function, turn the unit on, then hold down VIDEO/AUX and press POWER on the unit. Repeat the procedure to select “VIDEO”, “AUX” or “TV” . 3# SPEAKER terminals Connect the speaker cord

42、 of the supplied front speakers here. 4AC power cord 8 CX-JN3 Setting the clock Use 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 SET appears in the display and then press ENTER. 3Press r or t repeatedly to set the h

43、our and then press ENTER. 4Press r or t repeatedly to set the minute and then press ENTER. The time display stops flashing and the clock starts from 00 seconds. MULTI JOG is also available in place of r or t. To display the time Press DISPLAY on the remote. The time will be displayed 6 seconds. Tip: AM 12:00 indicates midnight