Yamaha-RX-797-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 100979 SERVICE MANUAL STEREO RECEIVER IC DATA . . . . . . . .

7、. . . . . . . . . . . . . . . . . . . . . . . . 1718 DISPLAY DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . . 2028 PIN CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . 29 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . .

8、. . . . . . . 30 SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . 3134 PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3543 REMOTE CONTROL RAX100/RAX101 . . . . . . . . . . 44 REMOTE CONTROL RAX17 . . . . . . . . . . . . . . . . . . 45 REMOTE CONTROL RAX18 . . . . . . . .

9、 . . . . . . . . . . 46 I CONTENTS TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . . 2 IMPEDANCE SELECTOR . . . . . . . . . . . . . . . . . . . . . . 3 FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . .

10、. . 45 REMOTE CONTROL PANELS . . . . . . . . . . . . . . . . . . 5 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 67 INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . . . . 8 SELF DIAGNOSIS FUNCTION . . .

11、. . . . . . . . . . . . 915 AMP ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . 16 DPX-1200RX-797 RX-797 2005 YAMAHA CORPORATION. All rights reseved. This manual is copyrighted by YAMAHA and may not be copied or redistributed either in print or electronically without permission. 05.10 2

12、 RX-797 RX-797 I TO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics are marked 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 compl

13、eted, 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. AC LEAKAGE TESTER OR EQUIVALENT EQUIPMENT UNDER TEST INSULATING TABLE WALL OUTLET GLeakage current must not exceed 0

14、.5mA. GBe sure to test for leakage with the AC plug in both polarities. WARNING: CHEMICAL CONTENT NOTICE! 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

15、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/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHATSOEVER! Avoid prolonged, unprotected contact between solder and

16、 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 product, wash your hands before handling food. About Lead Free Solder The P.C.B.s installed in this unit are soldered usin

17、g the following solder. “CAUTION” “F251, F252 : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 8A, 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 FU

18、NCTI 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 SolderLead 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 fo

19、llowing types for the repair work. Sn + Ag + Cu (tin + silver + copper) Sn + Cu (tin + copper) Sn + Zn + Bi (tin + zinc + bismuth) 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 iro

20、n suitable to each solder. 2. If lead solder must be used, be sure to remove lead free solder from each terminal section of 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-797 DPX-1200R

21、X-797 I IMPEDANCE SELECTOR WARNING: Do not change the setting of the IMPEDANCE SELECTOR switch when the unit power is switched on, as doing so may damage the unit. I FRONT PANELS M U, C models M R, A, G, E, L models IMPEDANCE SELECTOR 4 RX-797 RX-797 I REAR PANELS M U, C models M R model M A model 5

22、 RX-797 DPX-1200RX-797 M G, E models M L model I REMOTE CONTROL PANELS M RAX100 (U, C models) M RAX101 (R, A, G, E, L models) M RAX17 (U, C models) M RAX18 (R, A, G, E, L models) 6 RX-797 RX-797 I SPECIFICATIONS AUDIO SECTION Minimum RMS Output Power (Power Amp. Section) L/R, 20 Hz to 20 kHz, 0.019%

23、 THD, 8 ohms . . . .100 W + 100 W L/R, 20 Hz to 20 kHz, 0.03% THD, 6 ohms . . . . .120 W + 120 W Dynamic Power Per Channel (IHF) 8/6/4/2 ohms . . . . . . . . . . . . . . . . . . . . . . .140/170/220/290 W Maximum Power Per Channel (G, E models) 1 kHz, 0.7 % THD, 4 ohms . . . . . . . . . . . . . . .

24、. . . . . . . . .160 W IEC Power (G, E models) 1 kHz, 0.019% THD, 8 ohms . . . . . . . . . . . . . . . . . . . . . .115 W Maximum Power (EIAJ) (R, L models) 1 kHz, 10% THD, 8 ohms . . . . . . . . . . . . . . . . . . . . . . . . .145 W 1 kHz, 10% THD, 6 ohms . . . . . . . . . . . . . . . . . . . . .

25、. . . .170 W Power Band Width L/R, 0.03% THD, 50 W, 8 ohms . . . . . . . . . . . .10 Hz to 50 kHz Damping Factor 20 Hz to 20 kHz, SPEAKER-A, 8 ohms . . . . . . . . .240 or more Input Sensitivity/Input Impedance PHONO MM . . . . . . . . . . . . . . . . . . . . . . . . .3.0 mV/47 k-ohms CD, etc. . . .

26、 . . . . . . . . . . . . . . . . . . . . . . . . .200 mV/47 k-ohms MAIN IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 V/30 k-ohms Maximum Input Signal PHONO MM, 1kHz, 0.019 % THD . . . . . . . . . . . . . . . . . .70 mV CD, etc., 1kHz, 0.019 % THD . . . . . . . . . . . . . . . .

27、. . . . . .2.2 V Output Level/Output Impedance SUBWOOFER . . . . . . . . . . . . . . . . . . . . . . . . . .4 V/1.2 k-ohms PRE OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 V/1.2 k-ohms ZONE2 OUT . . . . . . . . . . . . . . . . . . . . . . . . . . .1 V/1.2 k-ohms REC OUT . . . . .

28、 . . . . . . . . . . . . . . . . . . . . .200 mV/1.2 k-ohms Headphone Jack Rated Output/Output Impedance CD, etc. 1 kHz, 200 mV, 8 ohms, 0.015% THD . . . . . . . . .0.47 V/470 ohms Frequency Response CD, etc. 20 Hz to 20 kHz . . . . . . . . . . . . . . . . . . . . . .0 0.5 dB MAIN IN, 20 Hz to 20 kH

29、z . . . . . . . . . . . . . . . . . . . . .0 0.5 dB CD, CD DIRECT AMP ON, 10 Hz to 100 kHz . . . . . . . . . . . . .0 1.0 dB RIAA Equalization Deviation PHONO MM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 0.5 dB Total Harmonic Distortion (20 Hz to 20 kHz) PHONO MM to REC OUT (3

30、 V) . . . . . . . . . . . . . . . .0.008 % or less CD, etc. to PRE OUT (1V) . . . . . . . . . . . . . . . .0.007 % or less CD, etc. to SP OUT (50 W/8 ohms) . . . . . . . . .0.012 % or less Signal to Noise Ratio (IHF-A Network) PHONO MM (Input shorted, 5 mV) . . . . . . . . . .87 dB or more CD, CD DI

31、RECT AMP ON,(Input shorted, 200mV) . . . . . .110 dB or more Residual Noise (IHF-A Network) CD DIRECT AMP ON . . . . . . . . . . . . . . . . . . . . . . . . . . .30 V PURE DIRECT ON . . . . . . . . . . . . . . . . . . . . . . . . . . . .110 V Channel Separation CD, etc. (Input 5.1 k-ohms shorted) 1

32、kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65 dB or more 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 dB or more Tone Control Characteristics BASSBoost/Cut (50 Hz) . . . . . . . . . . . . .+10 dB/-10 dB Turnover Frequency . . . . . . . . . . . . . . . . .3

33、50 Hz TREBLEBoost/Cut (20 kHz) . . . . . . . . . . . .+10 dB/-10 dB Turnover Frequency . . . . . . . . . . . . . . . . .3.5 kHz Continuous Loudness Control Attenuation (1 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30 dB Gain Tracking Error 0 to -60 dB . . . . . . . . . . . . . . .

34、 . . . . . . . . . . . . . . . .2 dB or less FM SECTION Tuning Range U, C models . . . . . . . . . . . . . . . . . . . . . . . . .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

35、Quieting Sensitivity (IHF) 1 kHz 100% MOD. Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.0 V (17.3 dBf) Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 V (39.2 dBf) Usable Sensitivity (IHF) Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.0

36、 V (11.2 dBf) Selectivity at 400 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70 dB Signal to Noise Ratio (IHF) Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76 dB Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37、 . . . . . . . .70 dB Harmonic Distortion (1 kHz) Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.2 % Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.3 % Stereo Separation (1 kHz) . . . . . . . . . . . . . . . . . . . . . .

38、. .45 dB Frequency Response 20 Hz to 15 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . .+0.5/-2.0 dB Antenna Input . . . . . . . . . . . . . . . . . . . . . .75 ohms unbalanced AM SECTION Tuning Range U, C models . . . . . . . . . . . . . . . . . . . . . . . . . . .530 to 1710 kHz R, L mode

39、ls . . . . . . . . . . . . . . . . .530 to 1710/531 to 1611 kHz A, G, E models . . . . . . . . . . . . . . . . . . . . . . . . 531 to 1611 kHz Usable Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . .300 V/m Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Lo

40、op antenna GENERAL Power Supply U, C models . . . . . . . . . . . . . . . . . . . . . . . . . . AC 120 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 . . . . . . . . . . . . .

41、 . . . . . . . . . . . . . AC 230 V, 50 Hz L model . . . . . . . . . . . . . . . . . . . . AC 220/230-240 V, 50/60 Hz Power Consumption U, C models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260 W, 360 VA R, A, G, E, L models . . . . . . . . . . . . . . . . . . . . . . . . . . . 260 W S

42、tandby Power Consumption (reference) . . . . . . . . . . . . 0.1 W Maximum Power Consumption (R model) 1 kHz, 6 ohms, 10% THD . . . . . . . . . . . . . . . . . . . . . . . 650 W AC Outlet 2 Switched Outlet R model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 W Max. total U, C, G, E, L

43、models . . . . . . . . . . . . . . . . . . 100 W Max. total 1 Switched Outlet A models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 W Max. VIDEO SECTION Video Signal Type U, C, R models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .NTSC A, G, E, L models . . .

44、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .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 Out Freque

45、ncy Response . . . .5 Hz to 10 MHz, -3 dB 7 RX-797 DPX-1200RX-797 U . USA model C . Canadian model R . General model A . Australian model G . European model E . South European model L . Singapore model Unit : mm (inch) DIMENSIONS 435 (17-1/8) 151 (5-15/16) 130 (5-1/8)349 (13-3/4)21 (13/16) 18.5 (3/4

46、) 21.5 (7/8) 389 (15-1/16) Dimensions (W x H x D) . . . . . . . . . . . . . . 435 x 151 x 389 mm (17-1/8 x 5-15/16 x 15-5/16) Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10.9 kg (24 lbs) Finish . . . . . . . . . . . . . . . .Black color (U, C, R, A, G, E, L moels) Titanium

47、color (G, E, L moels) Accessories . . . . . . . . . . . . . . . . . . . . . . . .Remote Control x 1 Zone2 Remote Control x 1 Battery (AA, R6, UM-3) x 2 Battery (AAA, R03, UM-4) x 2 Power Cable x 1 Indoor FM Antenna x 1 AM Loop Antenna x 1 * Specifications subject to change without notice. I INTERNAL

48、 VIEW qMAIN (2) P.C.B. wMAIN (3) P.C.B. eMAIN (8) P.C.B. rMAIN (4) P.C.B. tMAIN (5) P.C.B. (R, L models) yMAIN (1) P.C.B. uXM P.C.B. (U, C models) iFUNCTION (4) P.C.B. oFUNCTION (5) P.C.B. !0FUNCTION (3) P.C.B. !1OPERATION (13) P.C.B. !2FUNCTION (2) P.C.B. !3FUNCTION (1) P.C.B. !4OPERATION (6) P.C.B

49、. !5OPERATION (10) P.C.B. !6MAIN (7) P.C.B. !7OPERATION (3) P.C.B. !8MAIN (6) P.C.B. !9OPERATION (2) P.C.B. 0OPERATION (7) P.C.B. 1OPERATION (1) P.C.B. 2OPERATION (8) P.C.B. 3OPERATION (9) P.C.B. 4OPERATION (5) P.C.B. 5OPERATION (11) P.C.B. 6OPERATION (4) P.C.B. qw e rty uio!0!1 !2 !3 !4 !4 0123 456!5!7 !5!6!7 !8!9 !9 2005 XM Satellite Radio Inc. All rights reserved. All other trademarks are the property of their respective owners. 8 RX-797 RX-797 I DISASSEMBLY PROCEDURES 1. Removal of Top Cover a. Remove 4 screws (