JVC-UXQD9S-cs-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2004 Victor Company of Japan, Limited No.MB338 2004/12 MICRO COMPONENT SYSTEM MB338200412 UX-QD9S TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-

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

3、-7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . . 1-32 (CA-UXQD9S)(SP-UXQD9S)(SP-UXQD9S) Area suffix A - Australia US - Singapore UN - Asean RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB338) SPECIFICATION DVD receiver (CA-UXQD9S) Speaker (SP-UXQD9S) Micro component system (UX-QD9S) U.S. and foreign patents licensed from Dolby Laboratories. Design and

5、 specifications are subject to change without notice. AmplifierOutput power20 W + 20 W at 4 (10% THD) Input terminalsAnalogAUX1, 500 mV/47 k:LEVEL1 250 mV/47 k:LEVEL2 Output terminalsAnalogSpeaker1, 20 W/4 , Impedance 4 - 16 Headphone (1), 25 mW/32 , Impedance 16 - 1 k DigitalDVD/CD optical input 1

6、-23 dBm to -15 dBm (Optical square terminal) OtherAV COMPU LINK 2 ( 3.5) TunerFrequencyFM87.50 MHz - 108.00 MHz AM531 kHz - 1 710 kHz (9 kHz spacing) 530 kHz - 1 710 kHz (10 kHz spacing) DVD playerPlayable discsDVD VIDEO, DVD AUDIO, CD, VCD, SVCD, CD-R/CDRW (CD, VCD, SVCD, MP3/ WMA/JPEG format), DVD

7、-R/ DVD-RW (video format) Cassette deck Frequency response Normal (type I)60 Hz - 14 000 Hz Wow and flutter 0.15% (WRMS) GeneralPower requirementAC 240 V , 50/60 Hz (UN,US only) AC 240 V , 50 Hz (A only) Power consumption70 W (at operation) 1.3 W (on standby) Dimensions165 mm (W) 200 mm (H) 355 mm (

8、D) Mass (approx.)4.6 kg System3-way bass reflex type, Magnetically shielded type SpeakersWoofer10 cm 1 Midrange4 cm 1 Tweeter1.5 cm 1 Power handling capacity20 W Impedance4 Frequency range55 Hz - 40 kHz Sound pressure level85 dB/Wm Dimensions140 mm (W) 231 mm (H) 204.5 mm (D) Mass (approx.)2.2 kg (1

9、 unit) GeneralDimensions445 mm (W) 231 mm (H) 355 mm (D) Mass (approx.)9.0 kg RadioFans.CN 收音机爱 好者资料库 (No.MB338)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 continued pro

10、tection, 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 produc

11、t 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 and mech

12、anical 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. Replacement parts

13、 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 have th

14、e 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 temper

15、ature 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 hazard testi

16、ng 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 use a li

17、ne 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 earth gr

18、ound. 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 betwee

19、n an ex- posed 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 resistor.

20、 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 responsib

21、ility 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 loca

22、l 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 side

23、) 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 regulation dos

24、e 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 RadioFans.CN 收音机爱 好者资料库 1-4 (No.MB338) 1.5Preventing static electricity Electrostatic discharge (ESD), which occurs when

25、 static electricity 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 optica

26、l 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 workbench Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse un

27、it (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 optical pickup In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical picku

28、p 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 the optical pickup. The testers internal power source can easily destroy the laser diode. 1.6Handling the traverse unit (optic

29、al 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 nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remo

30、ve 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 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

31、 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 the short land sections before the flexible wire is disconnected from the connecto on the servo board. (If the flexible wire is disconnected with

32、out 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. 1M Conductive material (conductive sheet) or iron palate (caption) Anti-static wrist strap Pickup Short land sections Co

33、nnector Card wire (No.MB338)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 Laser Unit

34、. 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 defeat

35、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 : Visible a

36、nd 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 nkyvlle ja nk

37、ymttmlle 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 adjustment or ope

38、ration 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 suojalukitu

39、s 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.MB338) SECTION 2 SPECIF

40、IC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MB338)1-7 SECTION 3 DISASSEMBLY 3.1Main body section 3.1.1Removing the rear cover (See Figs.1 and 2) (1) From the back side of the main body, remove the eleven screws A attaching the rear cover. (See Fig

41、.1.) (2) From the bottom side of the main body, remove the three screws B attaching the rear cover. (See Fig.2.) (3) Remove the rear cover from the main body. Fig.1 Fig.2 Rear cover A AAA Rear coverB 1-8 (No.MB338) 3.1.2Removing the side panels (L)/(R) (See Fig.3) Remove the rear cover. (1) From the

42、 bottom side of the main body, remove the two screws C attaching the side panels (L)/(R). (2) Slide the side panels (L)/(R) in the direction of the arrow and remove the side panels (L)/(R). Fig.3 3.1.3Removing the top cover assembly (See Figs.4 and 5) Remove the rear cover and side panels(L)/(R). (1

43、) From the left side of the main body, disconnect the card wires from the connectors (CN703, CN709) on the micon board. (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 card wire from the connector CN105 on th

44、e main board. (See Fig.5.) (4) Disconnect the wire from the connector CN108 on the main board. (See Fig.5.) Reference: When connecting the wire, pass it through the slot b of the main board as before. (See Fig.5.) (5) From the both sides of the main body, remove the two screws E and screw F attachin

45、g 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.4 Fig.5 Side panel(R) Side panel(R) C C ED Micon boardCN703CN709 Top cover assemblya E Main board aCN108CN105 Top cover assembly b F (No.MB338)1-9 3.1.4Removing the front

46、 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 card wires from the connectors (CN702, CN710) on the micon board. (See Fig.6.) (2) From the right side of the main body, disconnect the earth

47、wire 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.6 Fig.7 Fig.8 Micon board CN710CN702 Front panel assem

48、bly c Front panel assembly Micon board Earth wire c d Front panel assembly 1-10 (No.MB338) 3.1.5Removing 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 the screw G attaching the fan motor.

49、 (See Fig.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 slot e. (See Fig.10.) 3.1.6Removing 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 the two s