Yamaha-CRXE-300-Service-Manual电路原理图.pdf

《Yamaha-CRXE-300-Service-Manual电路原理图.pdf》由会员分享，可在线阅读，更多相关《Yamaha-CRXE-300-Service-Manual电路原理图.pdf（86页珍藏版）》请在收音机爱好者资料库上搜索。

1、100805 P.O.Box 1, Hamamatsu, Japan I CONTENTS TO SERVICE PERSONNEL . 2 PREVENTION OF ELECTRO STATIC DISCHARGE.34 FRONT PANELS. 4 REAR PANELS . 56 SPECIFICATIONS. 67 INTERNAL VIEW . 7 DISASSEMBLY PROCEDURES / 分解手順 . 810 CD MECHANISM UNIT OPERATION CHECK / CD動作 . 11 TEST MODE / . 1215 CD TEST MODE / C

2、D . 1617 CD STANDARD OPERATION CHART / CD基本動作 . 1821 CD ERROR MESSAGE / CD . 2225 AMP ADJUSTMENTS / 調整 . 2627 IC DATA . 2837 DISPLAY DATA . 38 BLOCK DIAGRAM. 3940 PRINTED CIRCUIT BOARD . 4146 SCHEMATIC DIAGRAM . 4750 REMOTE CONTROL. 51 PARTS LIST. 5268 SYSTEM CONTROL . 6983 NX-E300 . 84 Parts List f

3、or Carbon Resistors . 85 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 known and understood by the u

4、sers, 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 reasons, we advise all YAMAHA

5、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 of any applicable technic

6、al 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 YAMAHA products. Modifications

7、 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 static electricity your b

8、ody 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. SERVICE MANUAL MINI COMPONENT SYSTEM CRX-E300/NX-E30

9、0 CRX-E300 RadioFans.CN 收音机爱 好者资料库 2 CRX-E300 CRX-E300 WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE I TO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics are marked s and must be replaced with parts having specificati

10、ons equal to those originally installed. 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. Meter impedance should be equivalent to 1500 ohm shunted by 0.1

11、5F. Leakage current must not exceed 0.5mA. Be sure to test for leakage with the AC plug in both polarities. “CAUTION” “F403: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.6A, 125V FUSE.” “F404: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE

12、1.25A, 125V FUSE.” CAUTION F403: REPLACE WITH SAME TYPE 1.6A, 125V FUSE. F404: REPLACE WITH SAME TYPE 1.25A, 125V FUSE. ATTENTION F403: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.6A, 125V. F404: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.25A, 125V. WARNING: CHEMICAL CONTENT NOTICE! The

13、 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 defect

14、s 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 come in co

15、ntact with solder or components located inside the enclosure of this product, wash your hands before handling food. 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 protect your eyes an

16、d 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 any time. 2) D

17、o 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. Laser Emitting conditions: 1) When the Top C

18、over is removed, and the STANDBY/ON key is turned to the ON position, the laser component will 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 perio

19、d! If no disc is detected, the laser will stop emitting the beam. When a disc is loaded, you will not be exposed to any laser emissions. 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

20、 adjust this laser level control unless instruction is provided elsewhere in this manual. Adjustment of this control can increase the laser emission level from the device. RadioFans.CN 收音机爱 好者资料库 3 CRX-E300 CRX-E300 VARO!:AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NKYMTTMLLE LASER- STEILY

21、LLE. L KATSO STEESEEN. VARNING!: OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD OCH SPRREN R URKOPPLAD. BETRAKTA EJ STRLEN. B, G, R, K models B, G, R, K models The label is under the MAIN (1) P.C.B. I PREVENTION OF ELECTRO STATIC DISCHARGE Some semiconductor (solid state) devices can be damaged easily b

22、y 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 of co

23、mponent 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 strap

24、, 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 assemb

25、ly. 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-propelled

26、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 conductiv

27、e foam, aluminum foil or comparable 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 applied t

28、o 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 electr

29、icity (ESD) sufficient to damage an ES device). Optical Pick-up 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 distance of about 200 mm from the objective lens surface on the Optical Pick-up

30、 Block. 4 CRX-E300 CRX-E300 I FRONT PANELS U, C, A, R, K, J models B, G models CRX-E400/E300 V891330 CRX-E400/E300 V891340 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 groundi

31、ng Put a conductive material (sheet) or steel sheet on the area where 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 Conductive material

32、 (sheet) or steel sheet Anti-static wrist strip 5 CRX-E300 CRX-E300 B modelG model I REAR PANELS U, C modelsA model R modelK model 6 CRX-E300 CRX-E300 J model I SPECIFICATIONS / 参考仕様 I Audio Section / 部 Minimum RMS Output Power per Channel (Power Amp. Section) / 定格出力(部) SP OUT L/R (1 kHz, 0.1% THD,

33、6 ohms) .25W + 25W Maximum Power per Channel / 実用最大出力 (EIAJ) R, J models SP OUT L/R (1 kHz, 10% THD, 6 ohms) .30W + 30W Dynamic Power Per Channel / (IHF) SP OUT L/R 6/4/2 ohms . 35/40/45W DIN Standard Output Power Per Channel / DIN G model SP OUT L/R (1 kHz, 0.7% THD, 4 ohms) .28W + 28W Dynamic Head

34、room / U, C models 6 ohms. 1.46 dB IEC Power Per Channel / IEC G model SP OUT L/R (1 kHz, 0.1% THD, 6 ohms) .25W + 25W Power Band Width / 幅 SP OUT L/R (0.1% THD, 12.5W/6 ohms) .10 Hz to 50 kHz Damping Factor / SP OUT L/R (20 Hz to 20 kHz, 6 ohms) . 60 or more Input Sensitivity / Input Impedance (入力感

35、度/入力) MD, TAPE, AUX. 170 mV / 47 k-ohms Maximum Input Signal Level / 最大許容入力 MD, etc. (1 kHz, 0.5% THD) . 3.0 V Output Level / Output Impedance (出力電圧/出力) REC OUT (MD, TAPE) . 170 mV / 1.2 k-ohms SUBWOOFER (50 Hz). 2.0 V/1.2 k-ohms Headphone Jack Rated Output / Impedance (出力/出 力) MD, etc. (1 kHz, 170

36、mV, 8 ohms) . 0.35 V / 270 ohms Frequency Response / 周波数特性 MD, etc. to SP OUT (20 Hz to 20 kHz) . 0 0.5 dB Total Harmonic Distortion / 全高調波歪率 (20 Hz to 20 kHz, 12.5 W / 6 ohms) MD, etc. to SP OUT .0.04% or less Signal to Noise Ratio / 信号対雑音比 (IHF-A network) MD, etc. (Input shorted) to SP OUT 150 mV

37、.93 dB or more 250 mV .98 dB or more Residual Noise / 残留 (IHF-A netwok) SP OUT L/R . 100 V or less Channnel Separation / (Vol: MAX) MD, etc. (Input 5.1 k-ohms terminated, 1 kHz) .60 dB or more MD, etc. (Input 5.1 k-ohms terminated, 10 kHz) .45 dB or more Tone Control Characteristics / 特性 BASS:Boost/

38、Cut . 10 dB (50 Hz) Turnover Frequency . 350 Hz TREBLE: Boost/Cut . 10 dB (20 kHz) Turnover Frequency . 3.5 kHz Filter Characteristics / 特性 SUBWOOFER (L.P.F.) .fc = 150 Hz, 6 dB/oct. I FM Section / FM部 Tuning Range / 受信周波数範囲 U, C models . 87.5 to 107.9 MHz A, B, G models. 87.50 to 108.00 MHz R, K mo

39、dels . 87.5 to 108.0 / 87.50 to 108.00 MHz J model. 76.0 to 90.0 MHz Usable Sensitivity / 実用感度 (IHF) Mono . 1.0 V (11.2 dBf) Alternate Channel Selectivity / 実用選択度 at 400 kHz . 70 dB Signal to Noise Ratio / 信号対雑音比 (IHF) Mono / Stereo .76 dB / 70 dB Harmonic Distortion / 歪率 (1 kHz) Mono/Stereo. 0.2 /

40、0.3 % Stereo Separation / 1 kHz . 45 dB Frequency Response / 周波数特性 20 Hz to 15 kHz .+0.5 / -2 dB Antenna Input / 入力 . 75 ohms unbalanced I AM Section / AM部 Tuning Range / 受信周波数範囲 U, C models . 530 to 1,710 kHz A, B, G, J models . 531 to 1,611 kHz R, K models . 530 to 1,710 / 531 to 1,611 kHz Usable Sensitivity / 実用感度 . 300 V/m Antenna / 入力 . Loop Antenna I CD Section / CD部 Output Level / 出力 1 kHz, 0dB. 2.0 0.5 Vrms Signal to Noise Ratio / 信号対雑音比 (EIAJ) .