Yamaha-RX-497-Service-Manual电路原理图.pdf

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1、SERVICE MANUAL 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 users, and have therefore no

2、t 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 product owners that any ser

3、vice 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 technical capabilities, or establi

4、sh 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 are, therefore, inevitable

5、 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 body may have accumulated by

6、 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. IMPORTANT NOTICE 100977 SERVICE MANUAL STEREO RECEIVER AMP ADJUSTMENT . . . . .

7、 . . . . . . . . . . . . . . . . . . . . 16 IC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1718 DISPLAY DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 PIN CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . 20 PRINTED CIRCUIT BOARD . . . . . . . . . . . .

8、 . . . . 2127 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . 2932 PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3343 REMOTE CONTROL RAX100/RAX101 . . . . . . . 4445 I CONTENTS TO SERVICE PERSONNEL

9、. . . . . . . . . . . . . . . . . . . . 2 IMPEDANCE SELECTOR . . . . . . . . . . . . . . . . . . . . . . 3 FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 REMOTE CONTROL PANELS . . . . . . . . . . . . . .

10、 . . . . 5 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 67 INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . . . . 8 SELF DIAGNOSIS FUNCTION . . . . . . . . . . . . . . . 915 DPX-1200RX-497 RX-497 2005 Y

11、AMAHA CORPORATION. All rights reseved. This manual is copyrighted by YAMAHA and may not be copied or redistributed either in print or electronically without permission. 05.11 2 RX-497 RX-497 I TO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics are marke

12、d Z and must be replaced with parts having specifications 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. GMeter im

13、pedance should be equivalent to 1500 ohms shunted by 0.15F. AC LEAKAGE TESTER OR EQUIVALENT EQUIPMENT UNDER TEST INSULATING TABLE WALL OUTLET GLeakage current must not exceed 0.5mA. GBe sure to test for leakage with the AC plug in both polarities. WARNING: CHEMICAL CONTENT NOTICE! The solder used in

14、 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 defects or other repr

15、oductive 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 contact with sold

16、er or components located inside the enclosure of this product, wash your hands before handling food. About Lead Free Solder The P.C.B.s installed in this unit are soldered using the following solder. “CAUTION” “F251, F252 : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 8

17、A, 125V FUSE.” CAUTION F251, F252 : REPLACE WITH SAME TYPE 8A, 125V FUSE. ATTENTION F251, F252 : UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 8A, 125V. A V SI DE ASI DE B FUNCTI ON P. C. B.Lead Free Solder OPERATI ON P. C. B.Lead Free Solder MAI N P. C. B.Lead Free Solder XM P. C. B.Lead Free Sol

18、derLead Free Solder Side A Side B SMT REFLOW Process MI FLOW Process Solder Dip 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 + bi

19、smuth) Caution: 1. As the melting point temperature of the lead free solder 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. 2. If lead solder must be used, be sure to remove lead free solder from each terminal section of

20、the parts to be replaced and from the area around it completely before soldering, or make sure that the lead free solder and lead solder melt together fully. 3 RX-497 DPX-1200RX-497 I IMPEDANCE SELECTOR WARNING: Do not change the setting of the IMPEDANCE SELECTOR switch when the unit power is switch

21、ed on, as doing so may damage the unit. IMPEDANCE SELECTOR I FRONT PANELS M U, C models M R, A, G, E, L models 4 RX-497 RX-497 I REAR PANELS M U, C models M R model M A model 5 RX-497 DPX-1200RX-497 M G, E models M L model I REMOTE CONTROL PANELS M RAX100 (U, C models)M RAX101 (R, A, G, E, L models)

22、 6 RX-497 RX-497 I SPECIFICATIONS AUDIO SECTION Minimum RMS Output Power (Power Amp. Section) L/R, 20 Hz to 20 kHz, 0.04% THD, 8 ohms . . . . . . .75 W + 75 W Dynamic Power Per Channel (IHF) 8/6/4/2 ohms . . . . . . . . . . . . . . . . . . . . . . .105/125/150/178 W Maximum Power Per Channel (G, E m

23、odels) 1 kHz, 0.7 % THD, 4 ohms . . . . . . . . . . . . . . . . . . . . . . . .105 W IEC Power (G, E models) 1 kHz, 0.04% THD, 8 ohms . . . . . . . . . . . . . . . . . . . . . . . .84 W Maximum Power (EIAJ) (R, L models) 1 kHz, 10% THD, 8 ohms . . . . . . . . . . . . . . . . . . . . . . . . .115 W P

24、ower Band Width L/R, 0.08% THD, 35 W, 8 ohms . . . . . . . . . . . .10 Hz to 50 kHz Damping Factor 20 Hz to 20 kHz, SPEAKER-A, 8 ohms . . . . . . . . .150 or more Input Sensitivity/Input Impedance PHONO MM . . . . . . . . . . . . . . . . . . . . . . . . .3.0 mV/47 k-ohms CD, etc. . . . . . . . . . .

25、 . . . . . . . . . . . . . . . . . .185 mV/47 k-ohms Maximum Input Signal PHONO MM, 1kHz, 0.04 % THD . . . . . . . . . . . . . . . . . . .70 mV CD, etc., 1kHz, 0.04 % THD . . . . . . . . . . . . . . . . . . . . . . .2.2 V Output Level/Output Impedance SUBWOOFER . . . . . . . . . . . . . . . . . . .

26、. . . . . . .4 V/1.2 k-ohms ZONE2 OUT . . . . . . . . . . . . . . . . . . . . . . .185 mV/1.2 k-ohms REC OUT . . . . . . . . . . . . . . . . . . . . . . . . . .185 mV/1.2 k-ohms Headphone Jack Rated Output/Output Impedance CD, etc. 1 kHz, 185 mV, 8 ohms, 0.04% THD . . . . . . . . . .0.47 V/390 ohms

27、Frequency Response CD, etc. 20 Hz to 20 kHz . . . . . . . . . . . . . . . . . . . . . .0 0.5 dB CD, etc. PURE DIRECT ON, 10 Hz to 100 kHz . . . . . . . . . . . .0 1.0 dB RIAA Equalization Deviation PHONO MM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 0.5 dB Total Harmonic Distor

28、tion (20 Hz to 20 kHz) PHONO MM to REC OUT (3 V) . . . . . . . . . . . . . . . . .0.02 % or less CD, etc. to SP OUT (35 W/8 ohms) . . . . . . . . . .0.02 % or less Signal to Noise Ratio (IHF-A Network) PHONO MM (Input shorted, 5 mV) . . . . . . . . . .82 dB or more CD, etc. (Input shorted, 185mV) .

29、. . . . . . . . . .108 dB or more Residual Noise (IHF-A Network) PURE DIRECT ON . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 V Channel Separation CD, etc. (Input 5.1 k-ohms shorted) 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65 dB or more 10 kHz . . . . . . . . .

30、. . . . . . . . . . . . . . . . . . . . .50 dB or more Tone Control Characteristics BASSBoost/Cut (50 Hz) . . . . . . . . . . . . .+10 dB/-10 dB Turnover Frequency . . . . . . . . . . . . . . . . .350 Hz TREBLEBoost/Cut (20 kHz) . . . . . . . . . . . .+10 dB/-10 dB Turnover Frequency . . . . . . . .

31、 . . . . . . . . .3.5 kHz Continuous Loudness Control Attenuation (1 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30 dB Gain Tracking Error 0 to -60 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 dB or less FM SECTION Tuning Range U, C models . . . . . . . . . . .

32、 . . . . . . . . . . . . . .87.5 to 107.9 MHz R, L models . . . . . . . . . . . .87.5 to 108.0/87.50 to 108.00 MHz A, G, E models . . . . . . . . . . . . . . . . . . . . . 87.50 to 108.00 MHz 50 dB Quieting Sensitivity (IHF) 1 kHz 100% MOD. Mono . . . . . . . . . . . . . . . . . . . . . . . . . . .

33、. . .2.0 V (17.3 dBf) Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 V (39.2 dBf) Usable Sensitivity (IHF) Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.0 V (11.2 dBf) Selectivity at 400 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34、 . . .70 dB Signal to Noise Ratio (IHF) Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76 dB Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70 dB Harmonic Distortion (1 kHz) Mono . . . . . . . . . . . . . . . . . . . . . . . .

35、 . . . . . . . . . . . . . . . .0.2 % Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.3 % Stereo Separation (1 kHz) . . . . . . . . . . . . . . . . . . . . . . . .45 dB Frequency Response 20 Hz to 15 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . .+0.5/

36、-2.0 dB Antenna Input . . . . . . . . . . . . . . . . . . . . . .75 ohms unbalanced AM SECTION Tuning Range U, C models . . . . . . . . . . . . . . . . . . . . . . . . . . .530 to 1710 kHz R, L models . . . . . . . . . . . . . . . . .530 to 1710/531 to 1611 kHz A, G, E models . . . . . . . . . . . .

37、 . . . . . . . . . . . . 531 to 1611 kHz Usable Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . .300 V/m Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Loop antenna GENERAL Power Supply U, C models . . . . . . . . . . . . . . . . . . . . . . . . . . AC 120

38、 V, 60 Hz R model . . . . . . . . . . . . . AC 110/120/220/230-240 V, 50/60 Hz A model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC 240 V, 50 Hz G, E models . . . . . . . . . . . . . . . . . . . . . . . . . . AC 230 V, 50 Hz L model . . . . . . . . . . . . . . . . . . . . AC 220/230-

39、240 V, 50/60 Hz Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 W Standby Power Consumption (reference) . . . . . . . . . . . . 0.1 W Maximum Power Consumption (R moel) 1 kHz, 8 ohms, 10% THD . . . . . . . . . . . . . . . . . . . . . . . 400 W AC Outlet 2 Switched Outle

40、t R model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 W Max. total U, C, G, E, L models . . . . . . . . . . . . . . . . . . 100 W Max. total 1 Switched Outlet A models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 W Max. Dimensions (W x H x D) . . . . . . . . . . .

41、 . . . 435 x 151 x 308 mm (17-1/8 x 5-15/16 x 12-1/8) Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8.7 kg (19 lbs 3 oz) Finish . . . . . . . . . . . . . .Black Color (U, C, R, A, G, E, L models) Titanium Color (R, G, E, L models) Gold Color (L model) Accessories . . . . . . . .

42、. . . . . . . . . . . . . . . .Remote Control x 1 Battery (AA, R6, UM-3) x 2 Indoor FM Antenna x 1 AM Loop Antenna x 1 * Specifications subject to change without notice. VIDEO SECTION Video Signal Type U, C, R models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .NTSC A, G, E, L mo

43、dels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAL Video Signal Level . . . . . . . . . . . . . . . . . . . . .1 Vp-p/75 ohms Video Maximum Input Level . . . . . . . . . . . . . .1.5 Vp-p or more Video Signal to Noise Ratio . . . . . . . . . . . . . . . .50 dB or more Monitor

44、Out Frequency Response . . . .5 Hz to 10 MHz, -3 dB 7 RX-497 DPX-1200RX-497 Unit : mm (inch) DIMENSIONS I INTERNAL VIEW 435 (17-1/8) 151 (5-15/16) 130 (5-1/8)267 (10-1/2)21 (13/16) 18.5 (3/4) 22.5 (7/8) 308 (12-1/8) qw e rty uio!1!2!0 !6!5!4 !8!6!7!3 !3 200!4!51!9 U . USA model C . Canadian model R

45、. General model A . Australian model G . European model E . South European model L . Singapore model qOPERATION (12) P.C.B. (A, G, E, L models) wMAIN (4) P.C.B. (R, L models) eMAIN (2) P.C.B. rMAIN (3) P.C.B. tXM P.C.B. (U, C models) yMAIN (1) P.C.B. uMAIN (5) P.C.B. iFUNCTION (4) P.C.B. oFUNCTION (

46、1) P.C.B. !0FUNCTION (3) P.C.B. !1FUNCTION (2) P.C.B. !2OPERATION (13) P.C.B. !3OPERATION (6) P.C.B. !4OPERATION (10) P.C.B. !5OPERATION (3) P.C.B. !6OPERATION (2) P.C.B. !7OPERATION (1) P.C.B. !8OPERATION (8) P.C.B. !9OPERATION (5) P.C.B. 0OPERATION (7) P.C.B. 1OPERATION (4) P.C.B. 2OPERATION (9) P

47、.C.B. 2005 XM Satellite Radio Inc. All rights reserved. All other trademarks are the property of their respective owners. 8 RX-497 RX-497 I DISASSEMBLY PROCEDURES Remove parts in disassembly order as numbered. Disconnect the power cable from the AC outlet. Fig. 1 1. Removal of Top Cover a. Remove 4

48、screws ( q ), 1 screw ( w ) and 4 screws ( e ). (Fig. 1) b. Slide the Top Cover rearward to remove it. (Fig. 1) 2. Removal of Front Panel Unit a. Remove 5 knobs (INPUT, BASS, TREBLE, BALANCE and LOUDNESS). b. Remove 1 screw ( r ) and then remove the Support Top. (Fig. 1) c. Remove 7 screws ( t ) and

49、 then remove the Front Panel Unit. (Fig. 1) 3. Removal of Plate Side Remove 2 push rivets ( y ) and then remove the Plate Side L/R. (Fig. 1) 4. Removal of Sub Chassis Unit a. Remove 2 screws ( u ) and then slide the Sub Chassis Unit forward. (Fig. 1) b. Loosen the harness fixture fixing the cable. c. Remove connectors CB103, CB401, CB404, CB506, CB606 and CB611 and then remove the Sub Chassis Unit. (Fig. 1) q q w e r t t y y u u Knob Knob Top Cover Sub Chassis Unit Plate Side L Plate Side R CB404 CB103 CB506 CB606 C