JVC-CAMXS6MDR-cs-sm维修电路原理图.pdf

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1、1-1 CA-MXS6MDR SP-MXS6MD SERVICE MANUAL COMPACT COMPONENT MD SYSTEM No.20876 Sep. 2000 COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD. CA-MXS6MDR SP-MXS6MD CA-MXS6MDR SP-MXS6MD Contents Safety precautions Preventing static electricity Important for laser products Disassembly method Adjustment method Fl

2、ow of functional operation until TOC read (MD section) Maintenance of laser pickup (MD) Replacement of laser pickup (MD) Flow of functional operation until TOC read (CD section) Maintenance of laser pickup (CD) Replacement of laser pickup (CD) Description of major ICs 1-2 1-4 1-5 1-6 1-31 1-37 1-38

3、1-38 1-39 1-40 1-40 1-41 Area Suffix This service manual is printed on 100% recycled paper. B E EN U.K. Continental Europe Northern Europe COMPACT DIGITAL AUDIO DISC LOADING MECHANISM STANDBY /ON LONG MODE REC MODE SP/LP2/LP4 REC PAUSE HIGH SPEED CD MD TITLE/EDITENTER /DEMO PHONESLINE 2 MENU COMPACT

4、 COMPONENT MD SYSTEM MX-S6MDR DISC DIMMER LINE RM-SMXS6MDR REMOTE CONTROL LEVEL METER CA-MXS6MDR SP-MXS6MD MAIN SYSTEM SPEAKER SYSTEM RadioFans.CN 收音机爱 好者资料库 1-2 CA-MXS6MDR SP-MXS6MD 1. This design of this product contains special hardware and many circuits and components specially for safety purpos

5、es. For continued 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 performed by qualified personnel only. 2. Alterations of the design or circu

6、itry 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 manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. 3. Many el

7、ectrical and mechanical parts in the products have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replac

8、ement parts which have these special safety characteristics are identified in the Parts List of Service 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 no

9、t have the same safety characteristics 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

10、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 re-assembling. 5. Leakage currnet check

11、(Electrical shock hazard testing) After re-assembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of elec

12、trical 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, measure the leakage current from each exposed metal parts of the cabinet , particularly any exposed metal part having a return path to the chass

13、is, to a known good earth ground. Any leakage current 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 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a

14、0.15 F AC-type capacitor 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 eachexposed metal part, particularly any exposed metal part having a return path to the chassis, and meausre the AC

15、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 corresponds to 0.5 mA AC (r.m.s.). 1. This equipment has been designed and manufactured to meet international safety standards. 2. It is the

16、legal responsibility 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 sett

17、ing for local voltage. 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 ! Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of

18、preforming repair of this system. RadioFans.CN 收音机爱 好者资料库 1-3 CA-MXS6MDR SP-MXS6MD 1. Service should be performed by qualified personnel only. 2. This equipment has been designed and manufactured to meet international safety standards. 3. It is the legal responsibility of the repairer to ensure that

19、 these safety standards are maintained. 4. Repairs must be made in accordance with the relevant safety standards. 5. It is essential that safety critical components are replaced by approved parts. 6. If mains voltage selector is provided, check setting for local voltage. 1. This design of this produ

20、ct contains special hardware and many circuits and components specially for safety purposes. For continued 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. 2. Any

21、 unauthorised design alterations or additions will void the manufacturers guarantee ; furthermore the manufacturer cannot accept responsibility for personal injury or property damage resulting therefrom. 3. Essential safety critical components are identified by ( ) on the Parts List and by shading o

22、n the schematics, and must never be replaced by parts other than those listed in the manual. Please note however that many electrical and mechanical parts in the product have special safety related characteristics. These characteristics are often not evident from visual inspection. Parts other than

23、specified by the manufacturer may not have the same safety characteristics as the recommended replacement parts shown in the Parts List of the Service Manual and may create shock, fire, or other hazards. 4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the

24、 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 original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, af

25、ter re-assembling. ! Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. (U.K only) 1-4 CA-MXS6MDR SP-MXS6MD Electrostatic discharge (ESD), which occurs when static electricity stored in th

26、e body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.1. Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices

27、 such as CD/MD players. Be careful to use proper grounding in the area where repairs are being performed. 1.1.1. Ground the workbench 1. 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. 1

28、.1.2. Ground yourself 1. Use an anti-static wrist strap to release any static electricity built up in your body. 1.1.3. Handling the optical pickup 1. In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. A

29、fter replacement, return the shorted parts to their original condition. (Refer to the text.) 2. 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. 1.2. Handling the traverse unit (optical pickup)

30、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 flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-s

31、tatic 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. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not t

32、urn it Conductive material (conductive sheet) or iron plate (caption) Anti-static wrist strap CN321 CN451 PickupSoldering part Main board Flexible board Soldering part MD pickup CD pickup Preventing static electricity 1-5 CA-MXS6MDR SP-MXS6MD Important for laser products 1.CLASS 1 LASER PRODUCT 2.DA

33、NGER : 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 Laser Unit. Replace the complete Laser Unit if it malfunctions. 4.CAUTION : The compact disc player us

34、es invisible laserradiation and is equipped with safety switches whichprevent emission of radiation when the drawer is open and the safety interlocks have failed or are de feated. It is dangerous to defeat the safety switches. 5.CAUTION : If safety switches malfunction, the laser is able to function

35、. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. VARNING : Osynlig laserstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. VARO : Avattaessa ja suojalukitus ohitettaessa olet al

36、ttiina nkymttmlle lasersteilylle.l katso steeseen. ADVARSEL : Usynlig laserstrling ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. ADVARSEL : Usynlig laserstrling ved pning,nr sikkerhetsbryteren er avslott. unng utsettelse for strling. REPRODUCTION AND POSITION OF

37、LABEL WARNING LABEL CLASS 1 LASER PRODUCT !CAUTION Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. DANGER : Invisibie laser radiation when open and interlock or defeated. AVOID DIRECT EXPOSURE TO BEAM (e) VARNING : Osynlig laserstrlning

38、 r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. (s) VARO : Avattaessa ja suojalukitus ohitettaessa olet alttiina nkymttmlle lasersteilylle.l katso steeseen. (d) ADVARSEL :Usynlig laserstrling ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. (f) 1-6

39、CA-MXS6MDR SP-MXS6MD Remove the four screws A on the back of the body. Remove the two screws B on both sides of the body. Lift up the rear part of the top cover while pulling both sides, then remove the top cover. 1. 2. 3. Disassembly method Removing the top cover (See Fig. 1 and 2) Prior to perform

40、ing the following procedure, remove the top cover. Disconnect the card wire from connector CN661 on the input board. Remove the four screws C on the upper side of the body. Remove the screw D on the left side of the body. Release the wires from the clamp on the right side of the CD changer mechanism

41、 assembly. Lift up the rear part of the CD changer mechanism assembly and pull out it from the front assembly. 1. 2. 3. 4. Removing the CD changer mechanism assembly (See Fig.3 to 5) Fig.1 Fig.2 Fig.3 Fig.4Fig.5 Top cover AA A A A A C C B2 A Top cover CD changer mechanism assembly CD changer mechani

42、sm assembly CD changer mechanism assembly Clamp Input board Front panel assembly CN661 C C D 1-7 CA-MXS6MDR SP-MXS6MD Prior to performing the following procedure, remove the top cover. Disconnect the wire from connector CN603 on the input board and the card wire from CN801 on the microcomputer board

43、. Remove the two screws E on the bottom of the body. Release the joint a on the bottom and the two joints b and c on the lower sides of the body using a screwdriver. Detach the front panel assembly toward the front. 1. 2. 3. Removing the font panel assembly (See Fig.6 to 8) Prior to performing the f

44、ollowing procedure, remove the top cover and the front panel assembly. Remove the nine screws F attaching the display board to the front panel assembly. Disconnect connector CN791 on the display board from the control board on the front panel assembly. 1. 2. Removing the display board (See Fig.9) Pr

45、ior to performing the following procedure, remove the top cover, the front panel assembly and the display board. Remove the five screws G and the four screws H attaching the control board and the key board. 1. Removing the control board / the key board (See Fig.10) When removing the control board an

46、d the key board respectively, unsolder each board. REFERANCE: Fig.8 Front panel assemblyJoint a Joint b Joint c Front panel assembly CN603 CN801 Microcomputer board Display board Key board Control board Input board E E F G G G H H F F F Fig.6 Fig.7 Fig.9 Fig.10 Front panel assembly Front panel assem

47、bly Soldering Front panel assembly CN791 1-8 CA-MXS6MDR SP-MXS6MD Prior to performing the following procedure, remove the top cover and the CD changer mechanism assembly. Disconnect the card wire from connectors CN511 on the main board. Remove the four screws I on both sides of the body. Pull out th

48、e MD changer mechanism assembly from behind upward while releasing the four joints d using a screwdriver. 1. 2. 3. Removing the MD changer mechanism (See Fig.11 to 13 ) Prior to performing the following procedure, remove the top cover. Disconnect the card wire from connector CN801 on the microcomput

49、er board. Remove the screw D attaching the microcomputer board. Disconnect the lower connector CN391, CN392 and CN393 from the main board by pulling them. 1. 2. 3. Removing the microcomputer board (See Fig.14) MD changer mechanism assembly CN511 Microcomputer board CN801 CN393 CN392 CN391 Joints d I I D Fig.11 Fig.12 Fig.13 Fig.14 MD changer mechanism assembly MD changer mechanism assembly Joints d 1-9 CA-MXS6M