JVC-MXKC45-cs-sm维修电路原理图.pdf

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1、SERVICE MANUAL COPYRIGHT 2006 Victor Company of Japan, Limited No.MB550 2006/7 COMPACT COMPONENT SYSTEM MB55020067 MX-KC45E,MX-KC45EN, MX-KC45A,MX-KC45UW, MX-KC45UY,MX-KC45UJ Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . .

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

3、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-

4、12 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13 CA-MXKC45SP-MXKC45SP-MXKC45 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB550) SPECIFICATION Design and specifications are subject to change without notice.

5、AmplifierOutput Power(IEC 268-3)155 W per channel, min. RMS, driven into 6 at 1kHz, with no more than 10% total harmonic distortion (DIN-3)125 W per channel, min. RMS, driven into 6 at 1kHz, with no more than 0.9% total harmonic distortion Input Sensitivity/ Impedance (1 kHz) AUX IN Speaker terminal

6、s 400 mV/50 k 6 - 16 Phones32 - 1 k 17 mW/ch output into 32 Cassette Deck Section Frequency Response : Type I (NORMAL) 63 Hz - 12 500 Hz Wow And Flutter0.15% (WRMS) CD PlayerCD Capacity3 CDs Dynamic Range85 dB Signal-To-Noise Ratio85 dB Wow And FlutterUnmeasurable TunerFM Tuner : Tuning Range87.50 M

7、Hz - 108.00 MHz 87.50 MHz - 108.00 MHz (at AM9 kHz channel space) 87.5 MHz - 108.0 MHz (at AM10 kHz channel space) AM Tuner : Tuning Range522 kHz - 1710 kHz 522 kHz - 1 629 kHz (for Europe) 531 kHz - 1710 kHz (at AM9 kHz channel space) 530 kHz - 1710 kHz (at AM10 kHz channel space) UnitDimensions270

8、 mm 307 mm 492 mm (W/H/D) MassApprox. 9.3 kg Speaker Specifications (each unit) Type3-way bass-reflex type Speaker UnitWoofer16 cm cone 1 Mid5cm cone 1 Tweeter2cm dome 1 Power Handling Capacity160 W Impedance6 Frequency Range45 Hz - 22 000 Hz Sound pressure level87 dB/Wm Dimensions220 mm 324 mm 238

9、mm (W/H/D) MassApprox. 3.6 kg Power SpecificationsPower RequirementsAC 240 V , 50 Hz (for Australia) AC 230 V , 50 Hz (for Europe) AC 110 V-127 V/220 V-240 V , adjustable with voltage selector, 50 Hz/60 Hz (for Asia) Power Consumption165 W (power on mode) 23 W (in Standby mode) 1 W (in ECO mode) Rad

10、ioFans.CN 收音机爱 好者资料库 (No.MB550)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 unless authorized in wr

11、iting 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 product should not be made. A

12、ny 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 characteristics. These c

13、haracteris- 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 identified in the Parts List

14、 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 replacement parts shown in the

15、 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 prevention of electric shock

16、 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- tion check on the exp

17、osed 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 line cord directly into t

18、he 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.). Alternate check me

19、thod 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. Measure the AC voltage a

20、cross 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 measurement. Voltage meas

21、ured 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 standards are maintained. (3) R

22、epairs 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 left over on some parts

23、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 with black such as the res

24、istor ( ), 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 this probe on each expo

25、sed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE 1-4 (No.MB550) 1.5Important for laser products 1.CLASS 1 LASER PRODUCT 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiation when open. Do not stare into beam. (Others) Visible and

26、/or invisible class 1M laser radiation when open. Do not view directly with optical instruments. 3.CAUTION : Visible and/or invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam. 4.CAUTION : This laser product uses visible and/or invisible laser radiati

27、on 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 the safety switches. 5.CAUTION : If safety switches malfunction, the laser is able to function. 6.CAUTION : Use of cont

28、rols, adjustments or performance of procedures other than those specified here in may result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS and PRINT ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. WARNING LABEL

29、and PRINT (No.MB550)1-5 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-6 (No.MB550) SECTION 3 DISASSEMBLY 3.1Main Body 3.1.1Removing the metal cover (See Fig.1, 2) (1) Remove the two screws A and four screws B attaching the metal cover

30、from both side of the main body. (See Fig.1) (2) Remove the six screws C attaching the metal cover from back side of main body. (See Fig.2) 3.1.2Removing the heat sink cover (See Fig.2, 3) (1) Disconnect the connector wire from the fan connected to connector CN603 of the amp board. (See Fig.3) (2) R

31、emove the four screws D attaching the heat sink cover. (See Fig.2) 3.1.3Removing the fan (See Fig.2) (1) Remove the four screws E attaching the fan. Fig.1 Fig.2 Fig.3 A BB (both side) C EEC CC DD DDE CN601 CN603a G G (No.MB550)1-7 3.1.4Removing the 3CD changer mechanism (See Fig.3 to 7) (1) Disconne

32、ct the card wire from amp board connected to the connector CN601 of the main board. (See Fig.3) (2) Disconnect the card wire from the tuner pack connected to the connector CN306 of the main board. (See Fig.4) (3) Open the CD tray and remove the CD door. Caution: If the CD tray can not open at power

33、to ON condition, ro- tate the gear and open the CD tray. (See Fig.5) (4) Disconnect the card wire connected to the connector CN201 and CN303 of the main board. (See Fig.6) (5) Disconnect the connector wire connected to the connector CN301 and CN302 of the main board. (See Fig.6) (6) Remove the two s

34、crews F attaching the 3CD changer mechanism of back side of the main body. (See Fig.7) (7) Remove the four screws G attaching the 3CD changer mechanism from both side of the main body. (See Fig.3, 4) Fig.4 Fig.5 Fig.6 Fig.7 CN306 Q G GEAR (top view) CN303 CN302CN301 CN201HH HH F 1-8 (No.MB550) 3.1.5

35、Removing the main board (See Fig.6, 8, 9) (1) Remove the six screws H attaching the main board. (See Fig.6) (2) Disconnect the connector wire connected to the connector CW3 of the motor board. (See Fig.8) (3) Disconnect the connector wire connected to the connector of the traverse mechanism. (See Fi

36、g.8) (4) Solder the short land section of the CD pickup and then dis- connected the card wire from the main board connected to the CD pickup. (See Fig.9) Caution: Solder the short land section of the CD pickup before discon- necting the card wire from the connector on the CD pickup. If the card wire

37、 is disconnected without attaching the sol- ders, the pickup may be destroyed by static electricity. When attaching the CD pickup, be sure to remove solders from the short land section after connecting the card wire to the connector on the CD pickup. Fig.8 Fig.9 connector wire CW3 traverse mechanism

38、 motor board short land section (No.MB550)1-9 3.1.6Removing the tuner pack (See Fig.11) (1) Remove the two screws J attaching the tuner pack. 3.1.7Removing the amp board (See Fig.10, 11) (1) Disconnect the connector wire from the front board con- nected to the connector CN202 of the amp board. (See

39、Fig.10) (2) Disconnect the connector wires from the power transform- er connected to the connector CN902 and CN903 of the amp board. (See Fig.10) (3) Remove the four screws K attaching the amp board. (See Fig.11) (4) Remove the three screws L attaching the amp board. (See Fig.11) 3.1.8Removing the v

40、oltage selector board (See Fig.11) (1) Remove the two screws M attaching the voltage selector board. 3.1.9Removing the rear panel (See Fig.11) (1) Remove the four screws N attaching the rear panel. Fig.10 Fig.11 CN202CN903CN902 K K K L L L M N J 1-10 (No.MB550) 3.1.10 Removing the front panel assemb

41、ly (See Fig.3, 4, 12, 13) (1) Disconnect the two earth wires from the bottom plate. (See Fig.12) (2) Remove the one screw P attaching the front panel assem- bly from bottom side. (See Fig.13) (3) Remove the two screws Q attaching the front panel assem- bly from both side of the main body. (See Fig.4

42、) (4) Disengage the hook a on the both side of the front panel assembly. (See Fig.3) Fig.12 Fig.13 earth wire P (No.MB550)1-11 3.1.11 Removing the cassette mechanism assembly (See Fig.14) (1) Remove the six screws R attaching the cassette mecha- nism assembly. 3.1.12 Removing the front board (See Fi

43、g.14, 15) (1) Remove the seven screws S attaching the front board. (See Fig.14) (2) Disconnect the connector wire from the connector CN201 of the front board. (See Fig.14) (3) Remove the main volume knob. (4) Remove the eighteen screws T attaching the front board. (See Fig.15) (5) Remove the one scr

44、ews U attaching the front board. (See Fig.15) Fig.14 Fig.15 RR R R SS CN201 U T T T T 1-12 (No.MB550) SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT. (No.MB550)1-13 SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. (No.MB550) Audio/Video Systems

45、Category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Victor Company of Japan, Limited VPT Printed in Japan SCHEMATIC DIAGRAMS MX-KC45E,MX-KC45EN,MX-KC45A MX-KC45UW,MX-KC45UY,MX-KC45UJ Contents Block diagrams Standard schematic diagrams Printed circuit boards 2-1 2-2 2-17 to 21 CD-ROM No.

46、SML200607 COMPACT COMPONENT SYSTEM No.MB550SCH 2006/7 COPYRIGHT 2006 Victor Company of Japan, Limited. Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) CA-MXKC45SP-MXKC45SP-MXKC45 In regard with component parts appearing on the silk-screen printed side (parts

47、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. 2-1 Block diagram Q414 to Q419 MECHA CONTROL JOG KEYS CON1 CN205 ANT IN DECK-A PB-HEAD TO DECK-B R/P-HEAD TO CASSETTE MECHAN

48、ISM TO CD PICKUP TO SPINDLE SLEED TO CD MECHA TRANSFORMER PWBTO AMP AC IN TO HEADPHONE CW202 SPEAKER OUT TO PT PWB CW903 TO PT PWB CW902 AUX IN AUX JACK TUNER L TUNER R CLK,CE DAT IN/OUT A/B SEL BIAS-ON SOL-A SOL-B MOTOR-ON TAPE L TAPE R SENCE MLT MRD/MDATA MWR/MCK CD ON MOTOR-MUTE IN-SW CAM+ LD M+

49、LD M- XRST DSP-SENSE DECINT MDO MADDR MD0 to MD7 SDIN,SCLK,SENB REMOTE,P-CNT ENCONDER1 ENCONDER2 KEY1,KEY2,KEY3 PRE-AMP L PRE-AMP R L OUT R OUT AUX L AUX R CD L CD R VOLUME PT901 TRANSFORMER IC702 IC701 CD RF AMP CN301CN302CN303CN701CN702CN703 Q434,Q435 BIAS OSC IC601 2CH POWER AMP. Q611 MUTE Q612 MUTE CN202JK601CN903CN902 IC803 16M SDRAM IC804 DIGITAL SERVO IC301 MCU IC202 VFD DRIVER VFD IC201 IR SENSOR PT902 BACKUP PT S901 VOLTAGE SELECTOR CN902CN903 CW903CW902 MAIN CN205 AUX CW205 AMP CN202 HEAD PHONE CW202 IC40