Jvc-KDDB-101-EX-Service-Manual 电路图 维修手册.pdf

《Jvc-KDDB-101-EX-Service-Manual 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Jvc-KDDB-101-EX-Service-Manual 电路图 维修手册.pdf（12页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL COPYRIGHT 2007 Victor Company of Japan, Limited No.MA319 2007/4 CD RECEIVER MA31920074 SERVICE MANUAL KD-DB101EX, KD-DB101EY COPYRIGHT 2007 Victor Company of Japan, Limited Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Lead free solder used i

2、n the board (material : Sn-Cu, melting point : 230 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . .

3、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA319) SPECIF

5、ICATION Design and specifications are subject to change without notice. AUDIO AMPLIFIER SECTION Maximum Power OutputFront/Rear50 W per channel Continuous Power Output (RMS) Front/Rear19 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion. Load Impedance4 (4 to 8

6、allowance) Tone Control RangeBass10 dB at 100 Hz Treble10 dB at 10 kHz Frequency Response40 Hz to 20 000 Hz Signal-to-Noise Ratio70 dB Line-Out Level/Impedance2.5 V/20 k load (full scale) Output Impedance1 k Other TerminalsSteering wheel remote input, AUX (auxiliary) input jack TUNER SECTION Frequen

7、cy RangeFM87.5 MHz to 108.0 MHz AMMW: 522 kHz to 1 620 kHz LW: 144 kHz to 279 kHz FM TunerUsable Sensitivity11.2 dBf (1.0 V/75 ) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz) 65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation35 dB MW TunerSensitivit

8、y/Selectivity20 V/35 dB LW TunerSensitivity50 V DAB TunerSensitivity-100 dBm (Band III)/-98 dBm (L-Band) Selectivity40 dB CD PLAYER SECTION TypeCompact disc player Signal Detection SystemNon-contact optical pickup (semiconductor laser) Number of Channels2 channels (stereo) Frequency Response5 Hz to

9、20 000 Hz Dynamic Range96 dB Signal-to-Noise Ratio98 dB Wow and FlutterLess than measurable limit MP3 Decoding Format: (MPEG1/2 Audio Layer 3)Max. Bit Rate : 320 kbps WMA (Windows Media Audio) Decoding FormatMax. Bit Rate : 192 kbps GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V a

10、llowance) Grounding SystemNegative ground Allowable Operating Temperature0C to +40C Dimensions (W H D) (approx.) Installation Size182 mm 52 mm 150 mm Panel Size188 mm 58 mm 13 mm Mass1.4 kg (excluding accessories) RadioFans.CN 收音机爱 好者资料库 (No.MA319)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions ! Bur

11、rs 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 this system. ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. RadioFans.CN 收音机爱 好者资料库 1-

12、4 (No.MA319) 1.2Preventing 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. 1.2.1 Grounding to p

13、revent damage by static electricity Static 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 workbench Ground the workbench by laying conductive

14、 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 during tra

15、nsport 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 testers

16、internal power source can easily destroy the laser diode. 1.3Handling 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

17、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 subjected to

18、strong force. (4) It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. 1.4Attention when traverse unit is decomposed *Please refer to Disassembly method in the text for the pickup unit. Apply solder to the short land before the card wire is disconnected

19、from the connector on the pickup unit. (If the card wire 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 after connecting the card wire. 1M (caption) Anti-static wrist strap Conductive material

20、 (conductive sheet) or iron plate Wires Push switch Pickup Base board Pickup Connector Flexible wire Frame CD mechanism assembly (No.MA319)1-5 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 in

21、to beam. (Others) Visible and/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 a

22、nd/or 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 the safety switches. 5.CAUTION : If safety switches malfunction, the laser is able to func

23、tion. 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 and PRINT ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or op

24、eration check. WARNING LABEL and PRINT 1-6 (No.MA319) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MA319)1-7 SECTION 3 DISASSEMBLY 3.1Main body 3.1.1Removing the BOTTOM COVER (See Fig.1) (1) Disengage five hooks a engaged the BOTTOM

25、 COVER. Fig.1 3.1.2Removing the HEAT SINK (See Fig.2) (1) Remove the two screws A and one screw B attaching the HEAT SINK. Fig.2 3.1.3Removing the FRONT CHASSIS (See Fig.3) (1) Remove the two screws C attaching the both side of FRONT CHASSIS. (2) Disengage two hooks b engaged the both side of FRONT

26、CHASSIS. Fig.3 a A B C hook a 1-8 (No.MA319) 3.1.4Removing the REAR BRACKET (See Fig.4) (1) Remove the one screw D attaching the LINE OUT JACK. (2) Remove the one screw E attaching the ANTENNA CABLE. (3) Remove the one screw F attaching the DAB ANTENNA ter- minal. (4) Remove the one screw G attachin

27、g the REMOTE CABLE. (5) Remove the one screw H attaching the IC bracket. (6) Remove the three screws J attaching the REAR BRACK- ET. Fig.4 3.1.5Removing the MAIN BOARD assembly (See Fig.5) (1) Remove the two screws K attaching the MAIN BOARD as- sembly. (2) Disconnect the connector CN501 connected M

28、AIN BOARD assembly and CD mechanism assembly. Fig.5 3.1.6Removing the CD mechanism assembly (See Fig.6) (1) Remove the three screws L attaching the CD mechanism assembly. Fig.6 3.1.7Removing the REAR COVER (See Fig.7) (1) Remove the VOLUME KNOB. (2) Remove the five screws M attaching the REAR COVER.

29、 (3) Disengage fourteen hooks c engaged the REAR COVER. Fig.7 3.2CD mechanism assembly section For CD mechanism assembly, please refer the service manual TN2007-1010 , No.MY005 and No.MY005B. DHJEFJJG K K CN501 LL L MMM M hook c hook c hook c (No.MA319)1-9 SECTION 4 ADJUSTMENT 4.1Adjustment method ?

30、 ? Test instruments required for adjustment (1) Digital oscilloscope (100MHz) (2) Electric voltmeter (3) Digital tester (4) Tracking offset meter (5) Test Disc JVC: CTS-1000 (6) Extension cable for check EXTSH002-22P 1 ? ? Standard volume position Balance and Bass & Treble volume: Indication 0 Loudn

31、ess: OFF ? ? Dummy load Exclusive dummy load should be used for AM, and FM. For FM dummy load, there is a loss of 6dB between SSG output and antenna input. The loss of 6dB need not be considered since direct reading of figures are applied in this working standard. ? ? Standard measuring conditions P

32、ower supply voltage: DC14.4V(10.5 - 16V) Load impedance: 20K(2 Speakers connection) Output Level: Line out 2.0V (Vol. MAX) ? ? How to connect the extension cable for adjustment CAUTION: Be sure to attach the heat sink and rear bracket onto the power amplifier and regulator respectively, before suppl

33、y the power. If voltage is applied without attaching those parts, the power amplifier IC and regulator IC will be destroyed by heat. EXTSH002-22P Extension cable 1-10 (No.MA319) SECTION 5 TROUBLESHOOTING 5.116 PIN CORD DIAGRAM 10 12 14 16 BR YL NC BK NC NC BL/WH RD 9 11 13 15 2 4 6 8 VI/BK GY/BK WH/

34、BK GN/BK VI GY WH GN 1 3 5 7 Black RD BK Red BLBlue WHWhite GNGreen VI Violet GYGray YLYellow BRBrown 1 2 3 4 5 6 7 8 10 12 13 15 16 VI VI/BK GY GY/BK WH WH/BK GN GN/BK BR YL BL/WH BK RD RR FR FL RL REMOTE TEL ANT ACC GND MEMORY Rear Right Front Right Front Left Rear Left Remote out ACC Line Ground

35、Memory Backup Battery+ Telephone Muting Auto Antenna GND ACC REMOTE MEMORY TEL RR+ RR- FR+ FR- FL+ FL- RL+ RL- GROUND ACC + 12Volt MEMORY BACKUP DIRECT TO BATTERY +12Volt (No.MA319)1-11 (No.MA319) VPT Printed in Japan Victor company of Japan, Limited Mobile Entertainment Business Group Mobile Entertainment Category 10-1,1chome,Ohwatari-machi,Maebashi-city,Gumma-ken, 371-8543,Japan