Yamaha-CDX497-cd-sm维修电路原理图.pdf

《Yamaha-CDX497-cd-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Yamaha-CDX497-cd-sm维修电路原理图.pdf（30页珍藏版）》请在收音机爱好者资料库上搜索。

1、101016 P.O.Box 1, Hamamatsu, Japan SERVICE MANUAL IMPORTANT NOTICE This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already know

2、n and understood by the users, and have therefore not been restated. WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruction of expensive components, and failure of the product to perform as specified. For these reaso

3、ns, we advise all YAMAHA product owners that any service required should be performed by an authorized YAMAHA Retailer or the appointed service representative. IMPORTANT:The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or recognition

4、of any applicable technical capabilities, or establish a principle-agent relationship of any form. The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service departments of YAMAHA are continually striving to improve YAMAH

5、A products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributors Service Division. WARNING:Static discharges can destroy expensive components. Discharge any

6、static electricity your body may have accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss). IMPORTANT:Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit. I CONTENTS TO SERVICE PERSO

7、NNEL . 24 PREVENTION OF ELECTROSTATIC DISCHARGE . 5 FRONT PANELS. 6 REAR PANELS . 68 REMOTE CONTROL PANELS. 8 SPECIFICATIONS / 参考仕様 . 9 INTERNAL VIEW . 9 REPAIR NOTES / 修理上留意点 . 10 HOW TO MANUALLY EJECT THE TRAY / 手動開方法 . 10 DISASSEMBLY PROCEDURES / 分解手順. 1112 TEST MODE / . 1314 IC DATA . 1519 BLOCK

8、 DIAGRAM. 20 WIRING DIAGRAM . 21 PRINTED CIRCUIT BOARDS. 2224 SCHEMATIC DIAGRAMS. 2526 REPLACEMENT PARTS LIST . 2829 REMOTE CONTROL. 30 2006 All rights reserved. This manual is copyrighted by YAMAHA and may not be copied or redistributed either in print or electronically without permission. CDX-497/

9、CDX-397 06.07 COMPACT DISC PLAYER CDX-497/CDX-397 RadioFans.CN 收音机爱 好者资料库 CDX-497/CDX-397 2 CDX-497/CDX-397 I TO SERVICE PERSONNEL WARNING: Laser Safety This product contains a laser beam component. This component may emit invisible, as well as visible radiation, which may cause eye damage. To prote

10、ct your eyes and skin from laser radiation, the following precautions must be used during servicing of the unit. 1) When testing and/or repairing any component within the product, keep your eyes and skin more than 30 cm away from the laser pick-up unit at all times. Do not stare at the laser beam at

11、 any time. 2) Do not attempt to readjust, disassemble or repair the laser pick-up, unless noted elsewhere in this manual. 3) CAUTION: Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. WARNING: CHEMICAL CONTENT NOTI

12、CE! The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth

13、 defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHATSOEVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor! If you com

14、e in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. 本機搭載基板無鉛付 。 無鉛種類、修理時下記 無鉛使用推奨。 Sn+Ag+Cu （錫+銀+銅） Sn+Cu （錫+銅） Sn+Zn+Bi （錫+亜鉛+） 注意： 無鉛融点温度通常鉛入比3040 程度高、合 使用。 All of the P.C.B.s installed in this unit are soldered using the lead

15、free solder. Among some types of lead free solder currently available, it is recommended to use one of the following types for the repair work. Sn + Ag + Cu (tin + silver + copper) Sn + Cu (tin + copper) Sn + Zn + Bi (tin + zinc + bismuth) Caution: As the melting point temperature of the lead free s

16、older is about 30C to 40C (50F to 70F) higher than that of the lead solder, be sure to use a soldering iron suitable to each solder. About Lead Free Solder / 無鉛 Laser Emitting conditions: 1) When the top cover is removed, and the “STANDBY/ON” SW is turned to the “ON” position, the laser component wi

17、ll emit a beam for several seconds to detect if a disc is present. During this time (5-10 sec.) the laser may radiate through the lens of the laser pick-up unit. Do not attempt any servicing during this period! If no disc is detected, the laser will stop emitting the beam. When a disc is set, you wi

18、ll not be exposed to any laser emissions. WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE 1. Critical Components Information Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally instal

19、led. 2. Leakage Current Measurement (For 120V Models Only) When service has been completed, it is imperative to verify that all exposed conductive surfaces are properly insulated from supply circuits. GMeter impedance should be equivalent to 1500 ohms shunted by 0.15F. GLeakage current must not exce

20、ed 0.5mA. GBe sure to test for leakage with the AC plug in both polarities. RadioFans.CN 收音机爱 好者资料库 CDX-497/CDX-397 3 CDX-497/CDX-397 WARNING Laser Diode Properties Material:GaAlAs Wavelength:780 nm Emission duration:continuous Laser output:max. 44.6 W * *This output is the value measured at a dista

21、nce of about 200 mm from the objective lens surface on the Optical Pick-up Block. Optical Pick-up 2) The laser power level can be adjusted with the VR on the pick-up PWB. However, this level has been set by the factory prior to shipping from the factory. Do not adjust this laser level control unless

22、 instruction is provided elsewhere in this manual. Adjustment of this control can increase the laser emission level from the device. CDX-497/CDX-397 4 CDX-497/CDX-397 CDX-497/CDX-397 5 CDX-497/CDX-397 I PREVENTION OF ELECTROSTATIC DISCHARGE Some semiconductor (solid state) devices can be damaged eas

23、ily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the incidence

24、of component damage caused by electro static discharge (ESD). 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist

25、strap, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the a

26、ssembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static (ESD protected)” can generate electrical charge sufficient to damage ES devices. 5. Do not use freon-prope

27、lled chemicals. These can generate electrical charges sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by cond

28、uctive foam, aluminum foil or compa- rable conductive material). 7. Immediately before removing the protective material from the leads of a replacement ES divice, touch the protective material to the chassis or circuit assembly into which the device will be installed. CAUTION: Be sure no power is ap

29、plied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static

30、 electricity (ESD) sufficient to damage an ES device). Grounding for electrostatic breakdown prevention 1. Human body grounding. Use the antistatic wrist strap to discharge the static electricity from your body. 2. Work table grounding. Put a conductive material (sheet) or steel sheet on the area wh

31、ere the optical pickup is placed and ground the sheet. Caution: The static electricity of your clothes will not be grounded through the wrist strap. So take care not to let your clothes touch the optical pickup. 1M-ohms Conductive material (sheet) or steel sheet Anti-static wrist strap CDX-497/CDX-3

32、97 6 CDX-497/CDX-397 I FRONT PANELS I REAR PANELS CDX-497 (R model) CDX-497 (R, T, K, A, B, G, J models) CDX-397 (R, T, A, B, G models) CDX-497 (T model) CDX-497 (K model) CDX-497/CDX-397 7 CDX-497/CDX-397 CDX-497 (A model) CDX-497 (B, G models) CDX-497 (J model) CDX-397 (R model) CDX-397 (T model)

33、CDX-497/CDX-397 8 CDX-497/CDX-397 I REMOTE CONTROL PANELS CDX-397 (A model) CDX-397 (B, G models) CDX-497 (R, T, K, A, B, G, J models)CDX-397 (R, T, A, B, G models) CDX-497/CDX-397 9 CDX-497/CDX-397 I INTERNAL VIEW Unit: mm (inch) 単位：mm （） I SPECIFICATIONS / 参考仕様 I Audio Section / 部 Frequency Respon

34、se / 周波数特性 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Hz to 20 kHz, 0.5 dB Total Harmonic Distortion + Noise (1 kHz) / 高調波歪率 （1 kHz） . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.003 % or less Signal to Noise Ratio / 信号対雑音比 . . . . . . . . . .

35、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 dB or more Dynamic Range / . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 dB or more Output Voltage (1 kHz, 0 dB) / 出力電圧 （1 kHz、0 dB） . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36、 . . . . . . . . . 2.0 0.5 V Headphone Output (-20 dB) / 出力電圧 （-20 dB） CDX-497 model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750 100 mV/32 ohms I General / 総合 Power Supply / 電源電圧 R model .AC 110-120/220-240 V, 50/60 Hz T model.AC 220 V, 50 Hz K model.AC 220 V, 60 Hz A model

37、.AC 240 V, 50 Hz B, G models . AC 220-240 V, 50 Hz J model . AC 100V, 50/60 Hz Power Consumption / 消費電力 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 W Dimensions (W x H x D) / 寸法 （幅高奥行） . . . . . . . . . . . . 435 x 87 x 287 mm (17-1/8 x 3-7/16 x 1

38、1-5/16) Weight / 質量 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5 kg (7 lbs. 11 oz) Finish / 仕上 CDX-497 Gold color . T, K, J models Black color . R, A, G models Titanium color . R, B, G models CDX-397 Gold color .T model Black color .R, T, A, G models Titanium color . R,

39、B, G models DIMENSIONS 435 (17-1/8) 276 (10-7/8) 17 (11/16) 4 (3/16) 70 (2-3/4) 87 (3-7/16) 287 (11-5/16) 7 (1/4) 15324 678 FRONT (5) P.C.B. (R model) FRONT (2) P.C.B. CD Mechanism MAIN (2) P.C.B. MAIN (1) P.C.B. FRONT (4) P.C.B. FRONT (3) P.C.B. (CDX-497 model) FRONT (1) P.C.B. 1 2 3 4 5 6 7 8 Acce

40、ssories / 付属品 Remote control x 1, Batteries x 2, Audio pin cable (1.5 m) x 1 * Specifications are subject to change without notice due to product improvements. 参考仕様外観予告変更。 R . General modelT. Chinese model K . Korean modelA . Australian model B . British modelG . European model J . Japanese model CD

41、X-497/CDX-397 10 CDX-497/CDX-397 None of the components of the following unit can be supplied separately. Each unit must be replaced as a whole in case of a failure. CD Mechanism MAIN P.C.B. FRONT P.C.B. 下記、小部品部品供給。 故障場合、各交換。 CD MAIN P.C.B. FRONT P.C.B. I REPAIR NOTES / 修理上留意点 I HOW TO MANUALLY EJEC

42、T THE TRAY / 手動開方法 a. Turn the unit bottom up. b. Using a flatblade screwdriver, turn the loading cam 90 degrees in the direction indicated by an arrow in the figure. c. Gently pull the tray out. a. 本機上下反転。 b. 図示矢 印方向90度回転。 c. 引出。 Tray Loading cam Tray Flatblade screwdriver CDX-497/CDX-397 11 CDX-49

43、7/CDX-397 Front Panel Assy Cable Connections Mounting Dismounting Top Cabinet 25 Remove 2 screws. 61 (2 on side) Remove 4 screws. 60 (4 on rear side) Lift top cabinet from rear side to remove. Remove CN42, CN52 and CN71. Unlock tray lid and close tray. Open tray. (See HOW TO MANUALLY EJECT THE TRAY)

44、 Remove 2 screws. 52 (Front panel assy to side frame) Remove 4 screws. 51 (Front panel assy to bottom frame) Remove front panel assy. Unlock front panel assy from frame by releasing successively 2 snaps. (2 on the side) Remove CN21-23, CN41 (MAIN (1) P.C.B.) and CN44. Remove 2 screws. 56 (P.C.B. to bottom frame) Remove 1 screw. 59 (P.C.B. to rear panel) Remove 3 screws (CDX-497), 2 screws (CDX-397). 58 (P.C.B. to rear panel) Remove MAIN (1) P.C.B. MAIN (1) P.C.B. 35 (1) Remove 1 screw. 59 (P.C.B. to rear panel) Remove MAIN (2) P.C.B. which is connect