Jvc-UXQD-9-S-Schematic电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2004 Victor Company of Japan, LimitedNo.MB3382004/12MICRO COMPONENT SYSTEMMB338200412UX-QD9STABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32 SPEC

2、IFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74 AD

3、JUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-285 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . 1-32(CA-UXQD9S) (SP-UXQD9S)(SP-UXQD9S)Area suffixA - AustraliaUS - SingaporeUN - Asean1-2 (No.MB338)SPECIFICATIONDVD receiver (CA-UXQD9S)Speaker (SP-UXQD9S)Micro component system (UX-QD9S) U.S. and foreign patents licensed from Dolby Laboratories. Design and specifications are subject to change w

5、ithout notice.Amplifier Output power 20 W + 20 W at 4 (10% THD)Input terminals Analog AUX1,500 mV/47 k:LEVEL1250 mV/47 k:LEVEL2Output terminals Analog Speaker1, 20 W/4 , Impedance 4 - 16 Headphone (1), 25 mW/32 , Impedance 16 - 1 kDigital DVD/CD optical input 1-23 dBm to -15 dBm (Optical square term

6、inal)Other AV COMPU LINK 2 ( 3.5)Tuner Frequency FM 87.50 MHz - 108.00 MHzAM 531 kHz - 1 710 kHz (9 kHz spacing)530 kHz - 1 710 kHz (10 kHz spacing)DVD player Playable discs DVD VIDEO, DVD AUDIO, CD, VCD, SVCD, CD-R/CDRW (CD, VCD, SVCD, MP3/ WMA/JPEG format), DVD-R/ DVD-RW (video format)Cassette dec

7、k Frequency response Normal (type I) 60 Hz - 14 000 HzWow and flutter 0.15% (WRMS)General Power requirement AC 240 V , 50/60 Hz (UN,US only)AC 240 V , 50 Hz (A only)Power consumption 70 W (at operation) 1.3 W (on standby)Dimensions 165 mm (W) 200 mm (H) 355 mm (D)Mass (approx.) 4.6 kgSystem 3-way ba

8、ss reflex type, Magnetically shielded typeSpeakers Woofer 10 cm 1Midrange 4 cm 1Tweeter 1.5 cm 1Power handling capacity 20 WImpedance 4 Frequency range 55 Hz - 40 kHzSound pressure level 85 dB/WmDimensions 140 mm (W) 231 mm (H) 204.5 mm (D)Mass (approx.) 2.2 kg (1 unit)General Dimensions 445 mm (W)

9、231 mm (H) 355 mm (D)Mass (approx.) 9.0 kg(No.MB338)1-3SECTION 1PRECAUTION1.1 Safety Precautions(1) This design of this product contains special hardware andmany circuits and components specially for safety purpos-es. For continued protection, no changes should be madeto the original design unless a

10、uthorized in writing by themanufacturer. Replacement parts must be identical tothose used in the original circuits. Services should be per-formed by qualified personnel only.(2) Alterations of the design or circuitry of the product shouldnot be made. Any design alterations of the product shouldnot b

11、e made. Any design alterations or additions will voidthe manufacturers warranty and will further relieve themanufacture of responsibility for personal injury or propertydamage resulting therefrom.(3) Many electrical and mechanical parts in the products havespecial safety-related characteristics. The

12、se characteris-tics are often not evident from visual inspection nor can theprotection afforded by them necessarily be obtained by us-ing replacement components rated for higher voltage, watt-age, etc. Replacement parts which have these specialsafety characteristics are identified in the Parts List

13、of Ser-vice Manual. Electrical components having such featuresare identified by shading on the schematics and by ( ) onthe Parts List in the Service Manual. The use of a substitutereplacement which does not have the same safety charac-teristics as the recommended replacement parts shown inthe Parts

14、List of Service Manual may create shock, fire, orother hazards.(4) The leads in the products are routed and dressed with ties,clamps, tubings, barriers and the like to be separated fromlive parts, high temperature parts, moving parts and/orsharp edges for the prevention of electric shock and firehaz

15、ard. When service is required, the original lead routingand dress should be observed, and it should be confirmedthat they have been returned to normal, after reassem-bling.(5) Leakage shock hazard testingAfter reassembling the product, always perform an isola-tion check on the exposed metal parts of

16、 the product (an-tenna terminals, knobs, metal cabinet, screw heads,headphone jack, control shafts, etc.) to be sure the productis safe to operate without danger of electrical shock.Do notuse a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using a“L

17、eakage Current Tester“, measure the leakage currentfrom each exposed metal parts of the cabinet, particular-ly any exposed metal part having a return path to thechassis, to a known good earth ground. Any leakage cur-rent must not exceed 0.5mA AC (r.m.s.). Alternate check methodPlug the AC line cord

18、directly into the AC outlet. Use anAC voltmeter having, 1,000 per volt or more sensitivityin the following manner. Connect a 1,500 10W resistorparalleled 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 ACvo

19、ltmeter. Move the resistor connection to each exposed metalpart, particularly any exposed metal part having a returnpath to the chassis, and measure the AC voltage acrossthe resistor. Now, reverse the plug in the AC outlet andrepeat each measurement. Voltage measured any mustnot exceed 0.75 V AC (r.

20、m.s.). This corresponds to 0.5mA AC (r.m.s.). 1.2 Warning(1) This equipment has been designed and manufactured tomeet international safety standards.(2) It is the legal responsibility of the repairer to ensure thatthese safety standards are maintained.(3) Repairs must be made in accordance with the

21、relevantsafety standards.(4) It is essential that safety critical components are replacedby approved parts.(5) If mains voltage selector is provided, check setting for localvoltage.1.3 CautionBurrs formed during molding may be left over on some partsof the chassis. Therefore, pay attention to such b

22、urrs in the case of pre-forming repair of this system.1.4 Critical parts for safetyIn regard with component parts appearing on the silk-screenprinted side (parts side) of the PWB diagrams, the parts that areprinted over with black such as the resistor ( ), diode ( )and ICP ( ) or identified by the “

23、 “ mark nearby are criticalfor safety. When replacing them, be sure to use the parts of thesame type and rating as specified by the manufacturer. (This regulation dose not Except the J and C version)Good earth groundPlace this probe on each exposedmetal part.AC VOLTMETER(Having 1000 ohms/volts,or mo

24、re sensitivity)1500 10W0.15 F AC TYPE1-4 (No.MB338)1.5 Preventing static electricityElectrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laserdiode in the traverse unit (optical pickup). Take care to prevent this when per

25、forming repairs.1.5.1 Grounding to prevent damage by static electricityStatic 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 workbenchGround

26、the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing thetraverse unit (optical pickup) on it.(2) Ground yourselfUse an anti-static wrist strap to release any static electricity built up in your body. (3) Handling the optical pickup In order

27、 to maintain quality during transport and before installation, both sides of the laser diode on the replacement opticalpickup 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 the laser diode in th

28、e optical pickup. The testers internal power source can easilydestroy the laser diode. 1.6 Handling 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 flexible cable using n

29、ippers, etc. after replacing the optical pickup. For specific details, refer to thereplacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long atime when attaching it to the connector. (3) Handle the flexible cable carefully as it m

30、ay 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.1.7 Attention when traverse unit is decomposed*Please refer to “Disassembly method“ in the text for the pickup unit. Apply solder to the short land sections

31、 before the flexible wire is disconnected from the connecto on the servo board. (If the flexiblewire 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 connecting the flexible wire.

32、1MConductive material(conductive sheet) or iron palate(caption)Anti-static wrist strapPickupShort land sectionsConnectorCard wire(No.MB338)1-51.8 Important for laser products1.CLASS 1 LASER PRODUCT2.DANGER : Invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure

33、 to beam.3.CAUTION : There are no serviceable parts inside theLaser 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 is equipped with safety switches which prevent emission of radiation

34、 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, adjustments or performance of procedures other than those specified her

35、e in may result in hazardous radiation exposure.REPRODUCTION AND POSITION OF LABELSCAUTION : Visible and Invisible laser radiation when open and interlock failed or defeated.AVOID DIRECT EXPOSURE TO BEAM. (e)VARNING : Synlig ochosynling laserstrlning nr den ppnas och sprren rurkopplad. Betrakta ejst

36、rlen. (s)VARO : Avattaessa ja suojalukitusohitettuna tai viallisena olet alttiina nkyvlle ja nkymttmllelasersteilylle. Vlt steenkohdistumista suoraan itseesi. (f)ADVARSEL : Synlig og usynliglaserstrling nr maskinen erben eller interlocken fejeler.Undg direkte eksponering til strling. (d)!Please use

37、enough caution not to see the beam directly or touch it in case of an adjustment or operationcheck.CLASS 1LASER PRODUCTCAUTION : Visible and Invisible laser radiation when open and interlock failed or defeated.AVOID DIRECT EXPOSURE TO BEAM. (e)VARNING : Synlig ochosynling laserstrlning nr den ppnas

38、och sprren rurkopplad. Betrakta ejstrlen. (s)VARO : Avattaessa ja suojalukitusohitettuna tai viallisena olet alttiina nkyvlle ja nkymttmllelasersteilylle. Vlt steenkohdistumista suoraan itseesi. (f)ADVARSEL : Synlig og usynliglaserstrling nr maskinen erben eller interlocken fejeler.Undg direkte eksp

39、onering til strling. (d)WARNING LABEL1-6 (No.MB338)SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.(No.MB338)1-7SECTION 3DISASSEMBLY3.1 Main body section3.1.1 Removing the rear cover (See Figs.1 and 2)(1) From the back side of the main body,

40、remove the elevenscrews A attaching the rear cover. (See Fig.1.)(2) From the bottom side of the main body, remove the threescrews B attaching the rear cover. (See Fig.2.)(3) Remove the rear cover from the main body.Fig.1Fig.2Rear coverAA AARear coverB1-8 (No.MB338)3.1.2 Removing the side panels (L)/

41、(R) (See Fig.3) Remove the rear cover.(1) From the bottom side of the main body, remove the twoscrews C attaching the side panels (L)/(R).(2) Slide the side panels (L)/(R) in the direction of the arrowand remove the side panels (L)/(R).Fig.33.1.3 Removing the top cover assembly (See Figs.4 and 5) Re

42、move the rear cover and side panels(L)/(R).(1) From the left side of the main body, disconnect the cardwires from the connectors (CN703, CN709) on the miconboard. (See Fig.4.)(2) Remove the screw D attaching the top cover assembly.(See Fig.4.)(3) From the right side of the main body, disconnect the

43、cardwire from the connector CN105 on the main board. (SeeFig.5.)(4) Disconnect the wire from the connector CN108 on the mainboard. (See Fig.5.)Reference:When connecting the wire, pass it through the slot b ofthe main board as before. (See Fig.5.)(5) From the both sides of the main body, remove the t

44、woscrews E and screw F attaching the top cover assembly.(See Figs.4 and 5.)(6) Release the joints a and remove the top cover assembly.(See Figs.4 and 5.)Fig.4Fig.5Side panel(R)Side panel(R)CCEDMicon boardCN703 CN709Top cover assembly aEMain boarda CN108 CN105Top cover assemblybF(No.MB338)1-93.1.4 Re

45、moving the front panel assembly (See Figs.6 to 8) Remove the rear cover, side panels(L)/(R) and top cover as-sembly.(1) From the left side of the main body, disconnect the cardwires from the connectors (CN702, CN710) on the miconboard. (See Fig.6.)(2) From the right side of the main body, disconnect

46、 the earthwire from the micon board. (See Fig.7.)(3) From the both sides and bottom sides of the main body, re-lease the joints c and joint d. (See Figs.6 to 8.)(4) Remove the front panel assembly in the direction of the ar-row. (See Figs.6 to 8.)Fig.6Fig.7Fig.8Micon boardCN710 CN702Front panel asse

47、mblycFront panel assemblyMicon boardEarth wirecdFront panel assembly1-10 (No.MB338)3.1.5 Removing the fan motor (See Figs.9 and 10) Remove the rear cover, side panels(L)/(R) and top cover as-sembly.(1) From the back side of the top cover assembly, remove thescrew G attaching the fan motor. (See Fig.

48、9.)Reference:When attaching the screw G, attach the spacer with it.(See Fig.9.)(2) Take out the fan motor.Reference:When attaching the fan motor, pass the wire through the slote. (See Fig.10.)3.1.6 Removing the tuner (See Figs.9 and 10) Remove the rear cover, side panels(L)/(R) and top cover as-sembly.(1) From the back side of the top cover assembly, remove thetwo screws H attaching the tuner bracket. (See Fig.9.)(2) From the inside of the top cover assembly, remove thescrew J attaching the tuner bracket. (See Fig.10.)(3) T