JVC-UXH10-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.MB066 2004/1 MICRO COMPONENT SYSTEM MB06620041 UX-H10 TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2

2、SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

3、4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . 1-16 TIMER SET RANDOMSLEEPINTRO STANDBY/ON TIMER ON/OFF REMAIN BEAT CUT DISPLAY /CLOCK SET MUTING RM-SUXH10U REMOTE CONTROL SOUND /BASS CD TAPECD VOLUME TUNER /BAND REPEAT ST/MONOPROGRAM STANDBY/ON STANDBY OPEN VOLUME MICRO COMPONENT SYSTEM UX-H10 CD SYNCHRO RECORDING Area Suffix US - Singapor

5、e UT -Taiwan UW - Brazil,Mexico,Peru RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB066) SPECIFICATION Design and specifications are subject to change without notice. Amplifier Section CA-UXH10 Output Power (IEC 268-3)10 W (5 W + 5 W) at 4 (10% THD) Speakers/Impedance4 - 16 TunerFM tuning range87.50 MHz-108.00 M

6、Hz AM tuning rangeAM 10 kHz intervals 530 kHz- 1 710 kHz AM 9 kHz intervals531 kHz-1 710 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 110 V

7、-127 V/ 220 V-240 V , adjustable with the voltage selector, 50 Hz/ 60 Hz Power consumption22 W (at operation) 4.5 W (on standby) Dimensions (W/H/D) (approx.) 145 mm 209 mm 226 mm Mass (approx.)2.6 kg Speaker Section SP-UXH10 TypeFull range bass-reflex type Speakers10 cm cone x1 Power handling capaci

8、ty5 W Impedance4 Frequency range100 Hz to 15 kHz Dimensions (W/H/D) (approx.) 135 mm 209 mm 152 mm Mass (approx.)1.3 kg each RadioFans.CN 收音机爱 好者资料库 (No.MB066)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components spe

9、cially for safety purpos- 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 per- formed by qualified personnel only. (2) Alter

10、ations of the design or circuitry 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 re

11、sulting therefrom. (3) Many electrical and mechanical 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 hi

12、gher voltage, watt- age, etc. Replacement parts 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

13、a substitute replacement which does not have the 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 li

14、ke 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, after

15、 reassem- bling. (5) Leakage shock hazard testing 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 wit

16、hout danger of electrical 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, particular- ly any exposed metal part having a retur

17、n path to the chassis, to a known good earth ground. 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

18、 paralleled 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 AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis,

19、and measure the AC 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.). 1.2Warning (1) This equipment has been designed and manufactured to meet international

20、safety standards. (2) It is the 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 volta

21、ge selector is provided, check setting for local 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 appear

22、ing on the silk-screen printed side (parts side) 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 spec

23、ified by the manufacturer. (This regulation dose 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.MB066) 1.5Preventing static electricity E

24、lectrostatic 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. 1.5.1 Grounding to prevent damage by static electricity Static elec

25、tricity 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 conductive material (such as a conductive sheet) or an iron p

26、late 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 during transport and before installation, both sides of the l

27、aser 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 testers internal power source can easily destroy the laser

28、diode. 1.6Handling 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 replacing the optical pickup. For specific details, refer to

29、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 subjected to strong force. (4) I t is not possible to adjust the

30、 semi-fixed resistor that adjusts the laser power. Do not turn it. 1.7Attention 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 on the CD servo

31、 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 Conductive material (conductive sheet) or iron palate (caption)

32、Anti-static wrist strap (No.MB066)1-5 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-6 (No.MB066) SECTION 3 DISASSEMBLY 3.1Main body 3.1.1Removing the Front panel assembly (See Fig.1 5) (1) Remove the two screws A and the two screws B o

33、n 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 reassembling, set the t

34、ab “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.MB066)1-7 3.1.2Removing the Main board (See Fig.6 , 7) Prior to

35、 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 Front panel assembly

36、E Main board CD mechanism assembly Front panel assembly Joint b 1-8 (No.MB066) 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 setting the wires. (2

37、) 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 F

38、ig.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 board CD mechanism assembly Front panel assembly (No.MB066)1-9 3.1.4Removing the CD mechanism board (See Fig.11 13) Prior to performing the f

39、ollowing procedure, remove the front panel assembly, the main board and the CD mechanism assembly. (1) Disconnect connector on the CD mechanism. (2) Remove the four screws H on the CD mechanism assembly. (3) Cut off the band setting each wire and disconnect the card wire from connector on the CD mec

40、hanism. (4) Remove the screw J attaching the wire on the CD mechanism board. Caution: The metal washer and nut come off. (5) Remove the four screws K attaching the CD mechanism. Fig.11 Fig.12 Fig.13 HH Switch board CD mechanism board CD mechanism assembly Front panel Connecter Band J Band Connecter

41、CD mechanism assembly Nut CD mechanism board KK CD mechanism assembly CD mechanism 1-10 (No.MB066) 3.1.5Removing the Headphone board (See Fig.14) Prior to performing the following procedure, remove the front panel assembly, the main board and the CD mechanism assembly. (1) Remove the screw L on the

42、bracket and pull out the headphone board. Fig.14 3.1.6Removing the LCD board (See Fig.15) Prior to performing the following procedure, remove the front panel assembly, the main board and the CD mechanism assembly. (1) Remove the ten screws M and the two screws N on the Front panel assembly. Fig.15 3

43、.1.7Removing the Cassette mechanism (See Fig.16) Prior to performing the following procedure, remove the front panel assembly and the main board. (1) Remove the four screws P on the front panel assembly and press the eject button on the front side to remove the cassette mechanism assembly. Fig.16 L

44、Head phones board Head phones bracket CD mechanism assembly Switch board Front panel assembly LCD board N M M M PP Cassette mechanism assembly. (No.MB066)1-11 3.1.8Removing the Transformer board (See Fig.17) Prior to performing the following procedure, remove the front panel assembly. (1) Remove the

45、 screw Q on the rear cover assembly. (2) Pull out the transformer board in the direction of the arrow. (3) Unsolder the wire extending from the transformer. Fig.17 3.1.9Removing the Transformer (See Fig.18 , 19) Prior to performing the following procedure, remove the front panel assembly and the tra

46、nsformer board. (1) Remove the two screws R attaching the voltage selector on the bottom of the rear cover assembly. (2) Remove the four screws S on the rear cover assembly. (3) Remove the two screws T setting the power cord on the rear cover assembly. (4) Cut off the band connecting the power cord

47、to the transformer if necessary, remove the transformer. 3.1.10 Removing the FM-antenna board (See Fig.19) Prior to performing the following procedure, remove the front panel assembly. (1) Remove the screw U on the rear cover assembly. (2) Unsolder the FM-antenna wire on the FM-antenna board. Fig.18

48、 Fig.19 Q Trans borad Solder point R U T S S FM ANT board Solder point e Section 1-12 (No.MB066) SECTION 4 ADJUSTMENT 4.1Measuring instructions required for adjustment (1) AM signal generator (2) FM signal generator (3) Intter mediate frequency sweep generater (4) FM stereo signal generator (5) Low-

49、frequency oscillator (oscillation frequency 50 Hz-20 kHz, 0dB output with 600 impeadance) (6) Attenuator (600 impeadance) (7) Electric voltmeter (8) Distotion meter (9) Torque guage (cassette for CTG-N) (10) Wow & flutter meter (11) Frequency counter meter 4.1.1Amplifier section Reference output Speaker output 0 dB(1V)/ 4 H. Phone output -10 dB(0.1V) 32 4.1.2CD section Test disc: JVC standard disc 4.1.3Test tape JVC standard test tape 4.1.4Measuring instruments Radio section FM 1 kHz, 22.5