JVC-UXJ60-cs-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. No.22029 2003/03 UX-J60 MICRO COMPONENT SYSTEM 22029200303 UX-J60 TABLE OF CONTENTS 1Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2Dis

2、assembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 3Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、 . . . . . 1-19 4Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25 Area Suffix B - U.K. E - Continental Europe EN - Northern Europe SP-UXJ60CA-UXJ60 RM-SUXJ60R REMOTE CONTROL SP-UXJ60 RadioFans.C

4、N 收音机爱 好者资料库 UX-J60 1-2 (No.22029) SECTION 1 Important Safety Precautions 1.1 Safety Precautions (1) This design of this product 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

5、 authorized in writing by the man- ufacturer. 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 product should not be made. Any design alterations of the product sh

6、ould 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 and mechanical parts in the products have special safety-related chara

7、cteristics. 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. Replacement parts which have these special safety characteristics are identifie

8、d in the Parts List of Service Manu- al. Electrical components having such features are iden- tified by shading on the schematics and by () on the Parts List in the Service Manual. The use of a substitute re- placement which does not have the same safety character- istics as the recommended replacem

9、ent parts shown in the Parts List of Service Manual may create shock, fire, or oth- er 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 prev

10、ention 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 reassembling. (5) Leakage shock hazard testing) After reassembling the product, always perform an isola

11、tion 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 electrical shock. Do not use a line isolation transformer during this check. Plug the AC line

12、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 earth ground. Any leakage cur- rent must not exceed 0.5mA AC (r.m.s.)

13、. 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 ohm 10W resistor paralleled by a 0.15 F AC-type capacitor between an exposed metal part and a known good earth grou

14、nd. 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 resistor. Now, reverse the plug in the AC outlet and repeat ea

15、ch measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1.2 Warning (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 st

16、andards 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 local voltage. 1.3 Caution Burrs formed during molding m

17、ay 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. 1.4 Critical 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

18、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. (Except the JC version) RadioFans.CN 收音机爱 好者资料库 UX-J60 (No.22029)1-3 1

19、.5 Safety Precautions (U.K only) (1) This design of this product contains special hardware and many circuits and components specially for safety purposes. For con- tinued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replace- ment part

20、s must be identical to those used in the original circuits. (2) Any 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

21、components are identified by ( ) on the Parts List and by shading on 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 characterist

22、ics are often not evident from visual inspection. Parts other than 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

23、 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 original lead routing and dress should be observed, a

24、nd it should be confirmed that they have been returned to normal, after re-assembling. 1.5.1Warning (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 rep

25、airer to ensure that 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. Burrs

26、 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. RadioFans.CN 收音机爱 好者资料库 UX-J60 1-4 (No.22029) 1.6 Preventing static electricity Electrostatic discharge (ESD), which occurs when static electr

27、icity 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. 1.6.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (lase

28、r diode) in devices such as CD players. 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. Aft

30、er 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. 1.7 Handling the traverse unit (optical pickup) (1) Do

31、 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 replace- ment procedure in the text. Remove the anti-sta

32、tic 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

33、turn it. 1.8 Attention when traverse unit is decomposed *Please refer to Disassembly method in the text for the CD pickup unit. Apply solder to the short land sections before the flexible wire is disconnected from the connector CN101 on the CD servo board. (If the flexible wire is disconnected witho

34、ut applying solder, the CD 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. CN601 on mechanism board Shorting round Shorting round Flexible wire UX-J60 (No.22029)1-5 1.9 Important for laser prod

35、ucts (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 Laser Unit. Replace the complete Laser Unit if it malfunctions.

36、 (4) CAUTION : The compact disc 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 de feated. It is dangerous to defeat the safety switches. (5) CAUTION : If safety switch

37、es malfunction, the laser is able to function. (6) CAUTION : Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. CAUTION Please use enough caution not to see the beam directly or touch it in case of anadjustment or o

38、peration check. VARNING Osynlig laserstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. VARO Avattaessa ja suojalukitus ohitettaessa olet alttiina nkymt- tmlle lasersteilylle. l katso steeseen. ADVARSEL Usynlig laserstrling ved bning, nr sikkerhedsafbrydere er ude af funktion.

39、Undg udsasttelse for strling. ADVARSEL Usynlig laserstrling ved pning, nr sikkerhetsbryteren er avs- lott. unng utsettelse for strling. REPRODUCTION AND POSITION OF LABELS Caution label UX-J60 1-6 (No.22029) SECTION 2 Disassembly method 2.1 Main body 2.1.1Removing the metal cover (See Fig.13) (1) Re

40、move the six screws A on the back of the main body. (2) Remove the two screws B on each side and remove the metal cover in the direction of the arrow. Fig.1 Fig.2 Fig.3 Metal cover A A A B B UX-J60 (No.22029)1-7 2.1.2Removing the rear cover (See Fig.4) (1) Remove the two screws C attaching the rear

41、cover. Fig.4 2.1.3Removing the rear panel / fan assembly (See Fig.5, 6) Prior to performing the following procedure, remove the metal cover and the rear cover. (1) Remove the eleven screws D attaching the rear panel. Re- lease the two joints a on the rear side and the two joints b on each side. (2)

42、Remove the two screws E attaching the fan bracket and release the two joints c on the rear panel, and remove. (3) Disconnect the wire from the connector CN916 on the main board. Fig.5 Fig.6 C Rear cover Rear panel Fan assembly DD D D D EE cc a bb Main board CN916 UX-J60 1-8 (No.22029) 2.1.4Removing

43、the tuner board (See Fig.7) Prior to performing the following procedure, remove the metal cover. (1) Disconnect the card wire from the connector CN1 on the tuner board. (2) Remove the two screws F on the rear side and the screw G in the side. Fig.7 2.1.5Removing the CD-R/RW mechanism assembly (See F

44、ig.8) Prior to performing the following procedure, remove the metal cover, the rear cover, the rear panel and the tuner board. (1) Disconnect the card wire from the connector CN903, CN902 and CN904 on the main board. (2) Pull the joint d in the direction of the arrow and remove the CD-R/RW mechanism

45、 assembly backward while releasing the joint e . Fig.8 Tuner board CN1 F G CN902 CN904 CN903 CD-R/RW mechanism assembly Main board d d e UX-J60 (No.22029)1-9 2.1.6Removing the main board / the heat sink board / the speaker jack board (See Fig.912) Prior to performing the following procedure, remove

46、the metal cover, the rear cover, the rear panel, the tuner board and the CD-R/RW mechanism assembly. (1) Remove the two screws H attaching the main board. (2) Disconnect the card wire from the connector CN900, CN901, CN930, CN931 and CN932, and disconnect the flat wire from the connector CN913, CN91

47、7 and CN918 on the main board. (3) Remove the band and disconnect the flat wire from the connector CN951 on the power transformer assembly, and then remove the main board / the heat sink board / the speaker jack board from the body. (4) Release the two joints f of the main board and disconnect the c

48、onnector CN944 and CN945 of the heat sink board from the connector CN912 and CN911 of the main board respectively, and disconnect the flat wire from the connec- tor CN914 and CN915, and remove. (5) Remove the screw I attaching the speaker jack board and disconnect the flat wire from the connector CN

49、946 and CN947 on the heat sink board, and then remove the speak- er jack board. Fig.9 Fig.10 Fig.11 Fig.12 H f Power transformer assembly CN951 CN930 CN917 CN900 CN901 CN918 CN931 CN913 CN932 Band Main board CN944 CN945 CN912 CN911 CN915 CN914 I CN946 CN947 Speaker jack board Heat sink board Main board Speaker jack board UX-J60 1-10 (No.22029) 2.1.7Removing the power transformer assembly (See Fig.13) Prior to performing the following procedure, remove the metal cover, the rear cover, the rear panel, the CD-R/RW mecha- nism