JVC-MXJD5-cs-sm维修电路原理图.pdf

《JVC-MXJD5-cs-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《JVC-MXJD5-cs-sm维修电路原理图.pdf（83页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL COPYRIGHT 2004 Victor Company of Japan, Limited No.MB263 2004/6 COMPACT COMPONENT SYSTEM MB26320046 MX-JD5 TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

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

3、7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . . 1-40 Area suffix US - Singapore UW - Brazil,Mexico,Peru UX - Saudi Arabia UE -Turkey UN - Asean CA-MXJD5 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB263) SPECIFICATION Design and specifications are subject to change without notice. Amplifier section Output PowerFRONT MAIN SPEAKERS40 W per channel, min

5、. RMS, driven into 6 at 1 kHz with no more than 10% total harmonic distortion. FRONT SUBWOOFERS80 W per channel, min. RMS, driven into 6 at 63 Hz with no more than 10% total harmonic distortion. CENTER SPEAKER40 W, min. RMS, driven into 8 at 1 kHz with no more than 10% total harmonic distortion. SUR

6、ROUND SPEAKERS25 W per channel, min. RMS, driven into 16 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 (Measured at 1 kHz, with tape recording signal 300 mV) AUX IN300 mV/47 k MIC 1/

7、23.0 mV/50 k VIDEO OUTColor 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 TerminalsFront main speakers6 - 16 Center speakers8 - 16 Surroun

8、d speakers16 - 32 6 - 16 (Front subwoofers) 6 - 16 OthersAV COMPU LINK 2 ( 3.5) Tuner sectionFM tuning range87.50 MHz - 108.00 MHz AM (MW) tuning range531 kHz - 1 710 kHz (at 9 kHz) 530 kHz - 1 710 kHz (at 10 kHz) Disc player section Playable discDVD Video/DVD Audio/CD/VCD/SVCD CD-R/CD-RW (recorded

9、in Audio CD/ Video CD/ Super Video CD/ MP3/ WMA/ JPEG/MPEG-4 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) GeneralPowe

10、r requirementAC 110 V / AC 127 V / AC 220 V / AC 230 V - AC 240 V , (adjustable with the voltage selector), 50 Hz / 60 Hz Power consumption220 W (at operation) 20 W (on standby) Dimensions (approx.)265 mm 335 mm 352 mm (W/H/D) Mass (approx.)8.7 kg RadioFans.CN 收音机爱 好者资料库 (No.MB263)1-3 SECTION 1 PREC

11、AUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components specially for safety purpos- es. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must

12、 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 product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the

13、manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. (3) Many electrical and mechanical parts in the products have special safety-related characteristics. These characteris- tics are often not evident from visua

14、l inspection nor can the protection afforded by them necessarily be obtained by us- ing replacement components rated for higher voltage, watt- age, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Ser- vice Manual. Electrical components havin

15、g 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 have the same safety charac- teristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, f

16、ire, 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 temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the o

17、riginal 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 hazard testing After reassembling the product, always perform an isola- tion check on the exposed metal parts of the product (an- tenna termin

18、als, 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 use a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using a Leakage Current Tester, mea

19、sure 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 earth 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 o

20、utlet. 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 between an ex- posed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move th

21、e 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 resistor. 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

22、 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 responsibility of the repairer to ensure that these safety standards are maintained. (3) Repairs must be made in accordance with the releva

23、nt 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 local voltage. 1.3Caution Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such

24、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 side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by

25、 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 regulation dose not Except the J and C version) Good earth ground Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/vo

26、lts, or more sensitivity) 1500 10W 0.15 F AC TYPE 1-4 (No.MB263) 1.5Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to preven

27、t 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 diode) in devices such as laser products. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the

28、 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) on it. (2) Ground yourself Use an anti-static wrist strap to release any static electricity built up in your body. (3) Handling the op

29、tical pickup In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.) Do not use a tester to check the condition of

30、 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 not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. (2) Cut off the shorted part of the

31、 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 pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector. (3) Handle the flexibl

32、e 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 it. 1.7Attention when traverse unit is decomposed *Please refer to Disassembly method in the text for the pickup unit. Apply solder to

33、 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, the pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land sections after conn

34、ecting the flexible wire. 1M Conductive material (conductive sheet) or iron palate (caption) Anti-static wrist strap Traverse mechanism assembly Pickup Short land section Card wire Connector (No.MB263)1-5 1.8Important for laser products 1.CLASS 1 LASER PRODUCT 2.DANGER : Invisible laser radiation wh

35、en 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 Laser Unit. Replace the complete Laser Unit if it malfunctions. 4.CAUTION : The CD,MD and DVD player uses invisible laser radiation and i

36、s 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 defeat the safety switches. 5.CAUTION : If safety switches malfunction, the laser is able to function. 6.CAUTION : Use of controls, ad

37、justments or performance of procedures other than those specified here in may result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS CAUTION : Visible and Invisible laser radiation when open and interlock failed or defeated. AVOID DIRECT EXPOSURE TO BEAM. (e) VARNING : Synlig oc

38、h osynling laserstrlning nr den ppnas och sprren r urkopplad. Betrakta ej strlen. (s) VARO : Avattaessa ja suojalukitus ohitettuna tai viallisena olet alttiina nkyvlle ja nkymttmlle lasersteilylle. Vlt steen kohdistumista suoraan itseesi. (f) ADVARSEL : Synlig og usynlig laserstrling nr maskinen er

39、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 adjustment or operation check. CLASS 1 LASER PRODUCT CAUTION : Visible and Invisible laser radiation when open and interlock failed or defeated.

40、 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 nkyvlle ja nkymttmlle lasersteilylle. Vlt steen kohdistumista suoraan itseesi. (f) AD

41、VARSEL : Synlig og usynlig laserstrling nr maskinen er ben eller interlocken fejeler. Undg direkte eksponering til strling. (d) WARNING LABEL 1-6 (No.MB263) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MB263)1-7 SECTION 3 DISASSEMBL

42、Y 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. (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

43、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 cover A Metal cover A Metal coverB BB 1-8 (No.MB263) 3.1.2Removing the front panel assembly (See Figs.4 to 7) Prior to performing the foll

44、owing procedures, 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 earth wires, fix them with a spacer as before. (See Fig.4.) (2) Remove the plastic rivet

45、 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 the wire clamp fixing the wires and disconnect the wires from the connectors (CN301, CN30

46、2) 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) Disconnect the wire from the connector CN454 on the for- ward side of the main board. (See Fig.5.) UW/UE version only (6) From

47、 the left side of the main body, disconnect the parallel wire from the connector CN101 on the transformer board. (See Fig.5.) (7) 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 a of the holder b

48、oard as before. (See Fig.5.) (8) Remove the tie band fixing the wire and disconnect the wire from the connector CN106 on the speaker terminal board. (See Fig.5.) Reference: After connecting the wire, fix the wire with a new tie band as before. (See Fig.5.) After connecting the wire, pass the wire th

49、rough the slot a of the holder board as before. (See Fig.5.) (9) From the top side of the main body, remove the two screws D attach the front panel assembly to the main body. (See Fig.6.) (10) 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.) (11) Release the claws b, re