JVC-MXJE5-cs-sm维修电路原理图.pdf

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1、SERVICE MANUAL COPYRIGHT 2005 Victor Company of Japan, Limited No.MB354 2005/3 COMPACT COMPONENT SYSTEM MB35420053 MX-JE5 TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2、 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-

3、7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . . 1-39 Area suffix US - Singapore UX - Saudi Arabia UG - Turkey,South Africa,Egypt UN - Asean (CA-MXJE5)(SP-XJE5)(SP-XSJE5)(SP-XJE5)(SP-XSJE5) RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB354) SPECIFICATION *Measured at 1 kHz, with tape recording signal 300 mV Design and specifications are subject to cha

5、nge without notice. Amplifier sectionOutput Power100 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 10% total harmonic distortion. Digital outputOPTICAL DIGITAL OUTPUT -21 dBm to -15 dBm (660 nm 30 nm) Audio input sensitivity/ Impedance* AUX300 mV/47 k MIC 1/23.0 mV/50 k VIDEO OUT

6、Color systemNTSC/PAL selectable VIDEO (composite)1 V(p-p)/75 S-VIDEOY (luminance):1 V(p-p)/75 C (chrominance, burst):0.286 V(p-p)/75 COMPONENT (Interlace/Progressive) (Y):1 V(p-p)/75 (PB/PR):0.7 V(p-p)/75 Speaker Terminals6 - 16 (Main speakers) Tuner sectionFM tuning range87.50 MHz - 108.00 MHz AM (

7、MW) tuning range531 kHz - 1 710 kHz (at 9 kHz) 530 kHz - 1 710 kHz (at 10 kHz) For Saudi Arabia only531 kHz - 1 602 kHz (at 9 kHz) 530 kHz - 1 600 kHz (at 10 kHz) Disc player sectionPlayable discDVD Audio/ DVD Video/CD/VCD/SVCD CD-R/CD-RW (recorded in Audio CD/ Video CD/ Super Video CD/ MP3/ WMA/ JP

8、EG format) DVD-R/DVD-RW (recorded in video format) Dynamic range90 dB Horizontal resolution500 lines Wow and flutterImmeasurable Cassette deck section Frequency response Normal (type I)50 Hz - 14 000 Hz Wow and flutter0.15% (WRMS) GeneralPower requirementAC 110 V / AC 127 V / AC 220 V / AC 230 V - A

9、C 240 V , (adjustable with the voltage selector), 50 Hz / 60 Hz Power consumption135 W (at operation) 17 W (on standby) Dimensions (approx.)265 mm 335 mm 352 mm (W/H/D) Mass (approx.)8.3 kg SpeakersType3-Way 3-Speaker Bass Reflex Type (Magnetically Shielded type) SpeakersWoofer15 cm cone 1 Midrange5

10、 cm cone 1 Tweeter2 cm dome 1 Power handling capacity100 W Impedance6 Frequency range42 Hz - 29 000 Hz Sound pressure level83 dB/Wm Dimensions (approx.)205 mm 335 mm 250 mm (W/H/D) Mass (approx.)3.6 kg each Surround speakersType1-Way Bass Reflex Type Speaker8 cm cone 1 Power handling capacity40 W Im

11、pedance16 Dimensions (approx.)105 mm 230 mm 125 mm (W/H/D) Mass (approx.)0.7 kg each RadioFans.CN 收音机爱 好者资料库 (No.MB354)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components specially for safety purpos- es. For contin

12、ued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be per- formed by qualified personnel only. (2) Alterations of the design or circuitry of the

13、 product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. (3) Many electrical a

14、nd mechanical parts in the products have special safety-related characteristics. These characteris- tics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by us- ing replacement components rated for higher voltage, watt- age, etc. Replacemen

15、t parts which have these special safety characteristics are identified in the Parts List of Ser- vice Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not

16、have the same safety charac- teristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards. (4) The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high

17、 temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after reassem- bling. (5) Leakage shock hazar

18、d testing After reassembling the product, always perform an isola- tion check on the exposed metal parts of the product (an- tenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.Do not u

19、se a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using a Leakage Current Tester, measure the leakage current from each exposed metal parts of the cabinet, particular- ly any exposed metal part having a return path to the chassis, to a known good e

20、arth ground. Any leakage cur- rent must not exceed 0.5mA AC (r.m.s.). Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15F AC-type capacitor

21、 between an exposed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resi

22、stor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1.2Warning (1) This equipment has been designed and manufactured to meet international safety standards. (2) It is the legal resp

23、onsibility of the repairer to ensure that these safety standards are maintained. (3) Repairs must be made in accordance with the relevant safety standards. (4) It is essential that safety critical components are replaced by approved parts. (5) If mains voltage selector is provided, check setting for

24、 local voltage. 1.3Caution Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of pre- forming repair of this system. 1.4Critical parts for safety In regard with component parts appearing on the silk-screen printed side (parts

25、 side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (This regulatio

26、n dose not Except the J and C version) Good earth ground Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE 1-4 (No.MB354) 1.5Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity

27、 stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.5.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser dio

28、de) in devices such as laser products. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the workbench Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup)

29、 on it. (2) Ground yourself Use an anti-static wrist strap to release any static electricity built up in your body. (3) Handling the optical pickup In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. Afte

30、r replacement, return the shorted parts to their original condition. (Refer to the text.) Do not use a tester to check the condition of the laser diode in the optical pickup. The testers internal power source can easily destroy the laser diode. 1.6Handling the traverse unit (optical pickup) (1) Do n

31、ot subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. (2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-static

32、pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector. (3) Handle the flexible cable carefully as it may break when subjected to strong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn

33、 it. 1.7Attention when traverse unit is decomposed *Please refer to Disassembly method in the text for the pickup unit. Apply solder to the short land sections before the flexible wire is disconnected from the connecto on the servo board. (If the flexible wire is disconnected without applying solder

34、, the pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land sections after connecting the flexible wire. 1M Conductive material (conductive sheet) or iron palate (caption) Anti-static wrist strap Traverse mechanism assembly Pickup Short land se

35、ction Card wire Connector (No.MB354)1-5 1.8Important for laser products 1.CLASS 1 LASER PRODUCT 2.DANGER : Invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam. 3.CAUTION : There are no serviceable parts inside the Laser Unit. Do not disassemble the La

36、ser Unit. Replace the complete Laser Unit if it malfunctions. 4.CAUTION : The CD,MD and DVD player uses invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the drawer is open and the safety interlocks have failed or are defeated. It is dangerous to

37、 defeat the safety switches. 5.CAUTION : If safety switches malfunction, the laser is able to function. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified here in may result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS CAUTION : V

38、isible and Invisible laser radiation when open and interlock failed or defeated. AVOID DIRECT EXPOSURE TO BEAM. (e) VARNING : Synlig och osynling laserstrlning nr den ppnas och sprren r urkopplad. Betrakta ej strlen. (s) VARO : Avattaessa ja suojalukitus ohitettuna tai viallisena olet alttiina nkyvl

39、le ja nkymttmlle lasersteilylle. Vlt steen kohdistumista suoraan itseesi. (f) ADVARSEL : Synlig og usynlig laserstrling nr maskinen er ben eller interlocken fejeler. Undg direkte eksponering til strling. (d) ! Please use enough caution not to see the beam directly or touch it in case of an adjustmen

40、t or operation check. CLASS 1 LASER PRODUCT CAUTION : Visible and Invisible laser radiation when open and interlock failed or defeated. AVOID DIRECT EXPOSURE TO BEAM. (e) VARNING : Synlig och osynling laserstrlning nr den ppnas och sprren r urkopplad. Betrakta ej strlen. (s) VARO : Avattaessa ja suo

41、jalukitus ohitettuna tai viallisena olet alttiina nkyvlle ja nkymttmlle lasersteilylle. Vlt steen kohdistumista suoraan itseesi. (f) ADVARSEL : Synlig og usynlig laserstrling nr maskinen er ben eller interlocken fejeler. Undg direkte eksponering til strling. (d) WARNING LABEL 1-6 (No.MB354) SECTION

42、2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MB354)1-7 SECTION 3 DISASSEMBLY 3.1Main body section 3.1.1Removing the metal cover (See Figs.1 to 3) (1) From the both sides of the main body, remove the two screws A attaching the metal cover. (

43、See Figs.1 and 2.) (2) From the back side of the main body, remove the six screws B attaching the metal cover. (See Fig.3.) (3) Remove the metal cover from the main body while lifting the rear section of the metal cover in the direction of the ar- row. (See Figs.1 and 2.) Fig.1 Fig.2 Fig.3 Metal cov

44、er A Metal cover A Metal coverB BB 1-8 (No.MB354) 3.1.2Removing the front panel assembly (See Figs.4 to 7) Remove the metal cover. (1) From the right side of the main body, remove the screw C attaching the earth wires on the reverse side of the main board. (See Fig.4.) Reference: After attaching the

45、 earth wires, fix them with a spacer as before. (See Fig.4.) (2) Remove the plastic rivet attaching the main board. (See Fig.4.) (3) From the inside of the main body, disconnect the card wires from the connectors (CN303, CN860, CN880) on the for- ward side of the main board. (See Fig.4.) (4) Remove

46、the wire clamp fixing the wires and disconnect the wires from the connector (CN301, CN302) on the forward side of the main board. (See Fig.5.) Reference: After connecting the wires to the connectors, fix the wires with the wire clamp as before. (See Fig.5.) (5) From the left side of the main body, d

47、isconnect the parallel wire from the connector CN103 on the transformer board. (See Fig.5.) (6) Disconnect the wire from the connector CN119 on the transformer board. (See Fig.5.) Reference: After connecting the wire, pass the wire through the slot b of the holder board as before. (See Fig.5.) (7) R

48、emove the tie band fixing the parallel wire and disconnect the parallel wire from the connector CN106 on the speaker terminal board. (See Fig.5.) Reference: After connecting the parallel wire, fix the parallel wire with a new tie band as before. (See Fig.5.) After connecting the wire, pass the wire

49、through the slot b of the holder board as before. (See Fig.5.) (8) From the top side of the main body, remove the two screws D attaching the front panel assembly to the main body. (See Fig.6.) (9) From the bottom side of the main body, remove the three screws E and two screws F attaching the front panel as- sembly. (See Fig.7.) (10) Release the claws a and remove the front panel assembly from th