Yamaha-CRXE-150-Service-Manual电路原理图.pdf

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1、SERVICE MANUAL MINI COMPONENT SYSTEM 100744 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

2、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 reasons, we

3、 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 of any

4、 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 YAMAHA prod

5、ucts. 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 static

6、 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. P.O.Box 1, Hamamatsu, Japan I CON

7、TENTS TO SERVICE PERSONNEL . 12 PREVENTION OF ELECTRO STATIC DISCHARGE.23 FRONT PANELS. 3 REAR PANELS . 4 SPECIFICATIONS. 56 INTERNAL VIEW . 6 DISASSEMBLY PROCEDURES . 78 CD MECHANISM UNIT OPERATION CHECK . 9 TEST MODE . 1011 CD TEST MODE. 12 CD STANDARD OPERATION CHART . 1314 CD ERROR MESSAGE . 151

8、6 AMP ADJUSTMENTS. 17 IC DATA . 1826 DISPLAY DATA . 27 BLOCK DIAGRAM. 2831 PRINTED CIRCUIT BOARD . 3241 SCHEMATIC DIAGRAM . 4245 REMOTE CONTROL TRANSMITTER . 46 PARTS LIST. 4759 SYSTEM CONTROL . 6068 NX-E150 . 69 CRX-E150/NX-E150 CRX-E150 RadioFans.CN 收音机爱 好者资料库 CRX-E150 CRX-E150 1 WALL OUTLET EQUIP

9、MENT 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 specifications equal to those originally installed. 2. Leakage Current Measurement

10、(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 0.15F. Leakage current must not exceed 0.5mA. Be sure to test for leakage w

11、ith the AC plug in bot polarities. “CAUTION” “F400: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.25A, 125V FUSE.” “F600: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.6A, 125V FUSE.” CAUTION F400: REPLANCE WITH SAME TYPE 1.25A, 125V FUSE

12、. F600: REPLANCE WITH SAME TYPE 1.6A, 125V FUSE. ATTENTION F400: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.25A, 125V. F600: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.6A, 125V. WARNING: CHEMICAL CONTENT NOTICE! The solder used in the production of this product contains LEAD. In additi

13、on, 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 defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONI

14、C 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 contact with solder or components located inside the enclosure of this pr

15、oduct, 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 and skin from laser radiation, the following precautions must be used dur

16、ing 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) Do not attempt readjustment, disassembly or repair of the laser pick-up,

17、 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 Cover is removed, and the STANDBY/ON key is turned to the ON positio

18、n, 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 period! If no disc is detected, the laser will stop emitting the beam. W

19、hen a disc is set, 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 adjust this laser level control unless instruction is provided elsewh

20、ere 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 CRX-E150 CRX-E150 2 VARO!:AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NKYMTTMLLE LASER- STEILYLLE. L KATSO STEESEEN. VARNING!: OSYNLIG LASERSTRLNING NR DENNA DEL R

21、PPNAD OCH SPRREN R URKOPPLAD. BETRAKTA EJ STRLEN. B, G, R, T models B, G, R, T 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 by static electricity. Such components commonly are called Electrostati

22、cally 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 component damage caused by electro static discharge (ESD). 1. Immediatel

23、y 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, which should be removed for potential shock reasons prior to applyin

24、g 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 assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES

25、 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 chemicals. These can generate electrical charges sufficient to damage

26、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 conductive foam, aluminum foil or comparable conductive material). 7. Immediate

27、ly 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 to the chassis or circuit, and observe all other safety precautions. 8.

28、 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 electricity (ESD) sufficient to damage an ES device). Optical Pick-up PROTEC

29、TION OF EYES FROM LASER BEAM DURING SERVICING This set employs a laser. Therefore, be sure to carefully follow the instructions below when servicing. 1. Laser Diode Properties Material: GaAlAs Wavelength: 780 nm Emission Duration : Continuous Laser Output: max. 44.6 W* * This output is the value mea

30、sured at a distance of about 200 mm from the objective lens surface on the Optical Pick- up Block. 2. When checking the laser diode emission, keep your eyes more than 30 cm away from the objective lens. CRX-E150 CRX-E150 I FRONT PANELS U, C, A, R, T models NATURAL SOUND CD RECEIVER CRX-E150 STANDBY

31、DISPLAY BASS +LR MIN MINMAX HOURTIMERTIME ADJ TREBLEBALANCE INPUT MEMORYAUTO/MANLPRESET/BANDPRESET/TURING PHONES STANDBY/ON TIMER VOLUME 3 B, G models NATURAL SOUND CD RECEIVER CRX-E150 STANDBY DISPLAY BASS +LR MIN MINMAX HOURTIMERTIME ADJ TREBLEBALANCE INPUT MEMORYAUTO/MANLPRESET/BANDPRESET/TURING

32、PHONES STANDBY/ON TIMER VOLUME 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 where the optical pickup is

33、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 (sheet) or steel sheet Anti-static wrist strip CRX-E150 CRX-E150 4 B modelG model I REAR PA

34、NELS U, C modelsA model R, T models CRX-E150 CRX-E150 5 I SPECIFICATIONS I Audio Section Minimum RMS Output Power per Channel (Power Amp. Section) (1 kHz, 0.1% THD, 6 ohms) SP OUT L/R .25W + 25W Maximum Power per Channel (EIAJ) R model (1 kHz, 10% THD, 6 ohms) SP OUT L/R .30W + 30W Dynamic Power Per

35、 Channel (IHF) SP OUT L/R 6 ohms.35W + 35W 4 ohms.40W + 40W 2 ohms.45W + 45W DIN Standard Output Power Per Channel SP OUT L/R (1 kHz, 1% THD, 4 ohms) G model.28W + 28W Dynamic Headroom 6 ohms U, C models . 1.46 dB IEC Power Per Channel SP OUT L/R (1 kHz, 0.1% THD, 6 ohms) G model.25W + 25W Power Ban

36、d Width (0.1% THD, 12.5W/6 ohms) SP OUT L/R .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 MD . 170 mV / 47 k-ohms TAPE . 170 mV / 47 k-ohms AUX . 170 mV / 47 k-ohms Maximum Input Signal Level MD, etc. (1 kHz, 0.5% THD) . 3.0 V O

37、utput Level / Output Impedance 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 MD, etc. 1 kHz, 170 mV, 6 ohms. 0.35 V / 270 ohms Frequency Response MD, etc. to SP OUT (20 Hz to 20 kHz) . 0 0.5 dB Total Harmonic Distortion (20 Hz to

38、 20 kHz, 12.5 W / 6 ohms) MD, etc. to SP OUT .0.04% or less Signal to Noise Ratio (IHF-A network) MD, etc. (Input shorted) to SP OUT 150 mV .93 dB or more 250 mV .98 dB or more Residual Noise (IHF-A netwok) SP OUT L/R . 100 V or less Channnel Separation (Vol: MAX) MD, etc. (Input 5.1 k-ohms terminat

39、ed, 1 kHz) .60 dB or more MD, etc. (Input 5.1 k-ohms terminated, 10 kHz) .45 dB or more Tone Control Characteristics BASS:Boost/Cut . 10 dB (50 Hz) Turnover Frequency . 350 Hz TREBLE: Boost/Cut . 10 dB (20 kHz) Turnover Frequency . 3.5 kHz Filter Characteristics SUBWOOFER (L.P.F.) .fc = 150 Hz, 6 dB

40、/oct. I FM Section Tuning Range U, C models . 87.5 to 107.9 MHz A, B, G models. 87.50 to 108.00 MHz R, T models. 87.5 to 108.0 / 87.50 to 108.00 MHz Usable Sensitivity (IHF) Mono . 1.0 V (11.2 dBf) Alternate Channel Selectivity at 400 kHz . 70 dB Signal to Noise Ratio (IHF) Mono / Stereo .76 dB / 70 dB Harmonic Distortion (1 kHz) Mono/Stereo. 0.2 / 0.3 % Stereo Separation 1 kHz . 45 dB Frequency Response 20 Hz to 15 kHz .