JVC-UXH9-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.MB107 2004/1 MICRO COMPONENT SYSTEM MB10720041 UX-H9 TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2S

2、PECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 4

3、ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . 1-18 TIMER SET RANDOMSLEEP INTRO /RDS SEARCH STANDBY/ON TIMER ON/OFF REMAIN /RDS MODE BEAT CUT DISPLAY /CLOCK SET MUTING RM-SUXH9R REMOTE CONTROL SOUND /BASS CD TAPECD VOLUME TUNER /BAND REPEAT ST/MONOPROGRAM STANDBY/ON STANDBY OPEN VOLUME MICRO COMPONENT SYSTEM UX-H9 CD SYNCHRO RECORDING Area

5、Suffix E - Continental Europe EN - Noerthern Europe RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB107) SPECIFICATION Design and specifications are subject to change without notice. Amplifier Section CA-UXH9 Output Power (IEC 268-3)10 W (5 W + 5 W) at 4 (10% THD) Speakers/Impedance4 - 16 TunerFM tuning range87.5

6、0 MHz-108.00 MHz AM (MW) tuning range522 kHz-1 629 kHz CD playerDynamic range60 dB Signal-to-noise ratio60 dB Wow and flutterImmeasurable Cassette deckFrequency responseNormal (type I):100 Hz-10 000 Hz Wow and flutter0.35 % (WRMS) GeneralPower requirementAC 230 V , 50 Hz Power consumption22 W (at op

7、eration) 3.0 W (on standby) Dimensions (W/H/D) (approx.)145 mm 209 mm 226 mm Mass (approx.)2.8 kg Speaker Section SP-UXH9 TypeFull range Bass-reflex type Speakers10 cm cone 1 Power handling capacity5 W Impedance4 Frequency range100 Hz to 15 kHz Dimensions (W/H/D) (approx.)135 mm 209 mm 152 mm Mass (

8、approx.)1.3 kg each RadioFans.CN 收音机爱 好者资料库 (No.MB107)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 protection, no changes should be made to the original design

9、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 product should not be made. Any design alterations of the produc

10、t 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 mechanical parts in the products have special safety-related c

11、haracteristics. 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 ident

12、ified 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 the same safety charac- teristics as the recommended replace

13、ment 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 temperature parts, moving parts and/or sharp edges for the preve

14、ntion 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 testing After reassembling the product, always perform an isola

15、- 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 line isolation transformer during this check. Plug the AC li

16、ne 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.

17、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 between an ex- posed metal part and a known good earth ground. M

18、easure 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 each me

19、asurement. 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 responsibility of the repairer to ensure that these safety standard

20、s 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. 1.3Caution Burrs formed during molding may be l

21、eft 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) of the PWB diagrams, the parts that are printed over wit

22、h 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 dose not Except the J and C version) Good earth ground Place

23、this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 0.15 F AC TYPE RadioFans.CN 收音机爱 好者资料库 1-4 (No.MB107) 1.5 Safety Precautions (U.K only) (1) This design of this product contains special hardware and many circuits and components specially for safety pu

24、rposes. For con- tinued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replace- ment parts must be identical to those used in the original circuits. (2) Any unauthorised design alterations or additions will void the manufacturers guaran

25、tee; 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 on the schematics, and must never be replaced by parts other than those listed in

26、 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 specified by the manufacturer may not have the same safety characteristics as th

27、e 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 like to be separated from live parts, high temperature parts, moving parts and

28、/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. 1.5.1Warning (1) Service should be performed by qualified pe

29、rsonnel 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 these safety standards are maintained. (4) Repairs must be made in accordance with the relevant safety standards. (5) It is es

30、sential that safety critical components are replaced by approved parts. (6) If mains voltage selector is provided, check setting for local voltage. 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 th

31、is system. (No.MB107)1-5 1.6Preventing 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 prevent this when performing repairs. 1.6.1 Gr

32、ounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser 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 co

33、nductive 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 optical pickup In order to maintain quality du

34、ring 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 the laser diode in the optical pickup. The

35、testers internal power source can easily destroy the laser diode. 1.7Handling 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 nippers, etc. after re

36、placing 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 flexible cable carefully as it may break when subje

37、cted to strong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. 1.8Attention 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 flexi

38、ble wire is disconnected from the connector on the CD servo board. (If the flexible wire is disconnected without 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. 1M Condu

39、ctive material (conductive sheet) or iron palate (caption) Anti-static wrist strap 1-6 (No.MB107) 1.9Important 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 servicea

40、ble 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 uses invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the drawer is open and the safety i

41、nterlocks 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. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation

42、exposure. REPRODUCTION AND POSITION OF LABEL and PRINT ! 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 ADVARSEL: Usynlig laser- str ling ved bning, n r sikkerhedsafbrydere er ude af funktion. Undg udst- telse for

43、 str ling (d) VARNING: Osynlig laser- str lning nr denna del r ppnad och sprren r urkopplad. Betrakta ej str len. (s) CAUTION: Invisible laser radiation when open and interlock failed or defeated. AVOID DIRECT EXPOSURE TO BEAM. (e) VARO: Avattaessa ja suo- jalukitus ohitettaessa olet alttiina nkymtt

44、mlle lasersteilylle. l katso steeseen. (f) (No.MB107)1-7 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-8 (No.MB107) SECTION 3 DISASSEMBLY 3.1Main body 3.1.1Removing the Front panel assembly (See Fig.1 5) (1) Remove the two screws A and

45、 the two screws B on the back of the body. (2) Remove the four screws C on each side of the body. (3) Remove the two screws D on the bottom of the body. (4) Move the front panel assembly in the direction of the arrow and detach. Disconnect the wire from connector CN860 and FM-ANT. Caution: When reas

46、sembling, set the tab “a” on the right and left side to the groove, and move. Fig.1 Fig.2 Fig.3 Fig.4 Fig.5 A B CD mechanism assembly C Front panel assembly D Front panel assembly Joint a Joint a Front panel assembly CD mechanism assembly FM-ANT CN860 (No.MB107)1-9 3.1.2Removing the Main board (See

47、Fig.6 , 7) Prior to performing the following procedure, remove the front panel assembly. (1) Disconnect the wire from all connectors on the main board. (2) Remove the two screws E and release the joint b. Fig.6 Fig.7 CN801 CN851 CN850 CN370 CN301 CN601 CN602 CN260 Main board CD mechanism assembly Fr

48、ont panel assembly E Main board CD mechanism assembly Front panel assembly Joint b 1-10 (No.MB107) 3.1.3Removing the CD mechanism assembly and the Switch board (See Fig.8 10) Prior to performing the following procedure, remove the front panel assembly and the main board. (1) Cut off the four bands s

49、etting the wires. (2) Disconnect the wire from connector on the CD open switch and CN705 on the CD mechanism board. (3) Remove the two screws F on the front panel assembly. (4) Release the joint d of the CD mechanism assembly. (5) Remove the five screws G attaching the switch board to the CD mechanism assembly. Fig.8 Fig.9 Fig.10 Band F F Band CN705 Open switch connecter CD mechanism assembly Front panel assembly Joint d CD mechanism assembly Front panel assembly G G Switch boar