Yamaha-RXA-720-Service-Manual-Part-1电路原理图.pdf

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1、P.O.Box 1, Hamamatsu, Japan 101 2 3 7 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 specifi cally YAMAHA Products, are already

2、known 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 specifi ed. For these

3、 reasons, 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 fi rm does not constitute authorization, certifi cation or rec

4、ognition 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 impr

5、ove YAMAHA products. Modifications are, therefore, inevitable and specifi cations are subject to change without notice or obligation to retrofi t. Should any discrepancy appear to exist, please contact the distributors Service Division. WARNING: Static discharges can destroy expensive components. Di

6、scharge any 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. CONTENTS TO SE

7、RVICE PERSONNEL .2 FRONT PANELS .34 REAR PANELS .58 REMOTE CONTROL PANEL .9 SPECIFICATIONS .1015 INTERNAL VIEW .1617 SERVICE PRECAUTIONS .17 DISASSEMBLY PROCEDURES .1823 UPDATING FIRMWARE .2425 SELF-DIAGNOSTIC FUNCTION .2664 POWER AMPLIFIER ADJUSTMENT .65 DISPLAY DATA .6669 IC DATA .7089 PIN CONNECT

8、ION DIAGRAMS .9091 BLOCK DIAGRAMS .9295 PRINTED CIRCUIT BOARDS .96128 SCHEMATIC DIAGRAMS .129148 REPLACEMENT PARTS LIST .149171 REMOTE CONTROL . 172174 ADVANCED SETUP . 175176 FIRMWARE UPDATING PROCEDURE .177188 AV RECEIVER RX-V673/HTR-6065/ RX-A720 Copyright 2012 All rights reserved. This manual is

9、 copyrighted by YAMAHA and may not be copied or redistributed either in print or electronically without permission. 12.05 RX-V673/HTR-6065/ RX-A720 Note: When the DIGITAL P.C.B. or IC82 on DIGITAL P.C.B. is replaced, this unit will display “Internal Error” and will not operate at all without additio

10、nal setting. In such a case, report the serial number of this unit to the following e-mail address. Yamaha Corporation will reply providing the setting procedure to make this unit operate properly. E-mail: ycav- This product contains chemicals known to the State of California to cause cancer, or bir

11、th 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 c

12、ome in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. 1. Critical Components Information Components having special characteristics are marked and must be replaced with parts having specifications equal to those originally install

13、ed. 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 ohms shunted by 0.15 F. TO SERVICE PERSONNEL Leakage cu

14、rrent must not exceed 0.5mA. Be sure to test for leakage with the AC plug in both polarities. WARNING: CHEMICAL CONTENT NOTICE! For U model “CAUTION” “F3702: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 8A, 125V FUSE.” For C model CAUTION F3702: REPLACE WITH SAME TYPE 8

15、A, 125V FUSE. ATTENTION F3702: UTILISER UN FUSIBLE DE RECHANGE DE MME TYPE DE 8A, 125V. All of the P.C.B.s installed in this unit and solder joints are soldered using the lead free solder. Among some types of lead free solder currently available, it is recommended to use one of the following types f

16、or 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 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

17、 solder. About lead free solder WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE 2 RX-V673/HTR-6065/RX-A720 RX-V673/HTR-6065/ RX-A720 FRONT PANELS RX-V673 (U, C, R, T, K, A, B, G, F, L, S, H models) HTR-6065 (A, F models) 3 RX-V673/HTR-6065/RX-A720 RX-V673/HTR-6065/

18、RX-A720 RX-A720 (U, C, A models) 4 RX-V673/HTR-6065/RX-A720 RX-V673/HTR-6065/ RX-A720 REAR PANELS RX-V673 (U, C models) RX-V673 (R, S models) RX-V673 (T model) 5 RX-V673/HTR-6065/RX-A720 RX-V673/HTR-6065/ RX-A720 RX-V673 (K model) RX-V673 (A model) RX-V673 (B, G, F models) 6 RX-V673/HTR-6065/RX-A720

19、 RX-V673/HTR-6065/ RX-A720 HTR-6065 (A model) RX-V673 (L, H models) HTR-6065 (F model) H model 7 RX-V673/HTR-6065/RX-A720 RX-V673/HTR-6065/ RX-A720 RX-A720 (A model) RX-A720 (U, C models) 8 RX-V673/HTR-6065/RX-A720 RX-V673/HTR-6065/ RX-A720 REMOTE CONTROL PANEL RAV472 Remote control sheet (T model)

20、9 RX-V673/HTR-6065/RX-A720 RX-V673/HTR-6065/ RX-A720 Audio Section Rated Output Power (Power Amp. Section) (1 kHz, 0.9 % THD) 1 channel driven U, C, R, T, K, A, B, G, F, L, S, H models (8 ohms) FRONT L/R .125 W/ch CENTER .125 W SURROUND L/R .125 W/ch SURROUND BACK L/R .125 W/ch B, G, F models (4 ohm

21、s) FRONT L/R .150 W/ch 2 channels driven simultaneously U, C, R, T, K, A, B, G, F, L, S, H models (8 ohms) FRONT L/R .105 W + 105 W CENTER .105 W SURROUND L/R .105 W + 105 W SURROUND BACK L/R .105 W + 105 W (20 Hz to 20 kHz, 0.09 % THD) 2 channels driven simultaneously U, C, R, T, K, A, B, G, F, L,

22、S, H models (8 ohms) FRONT L/R .90 W + 90 W Maximum Effective Output Power (JEITA) R, T, K, L, S, H models (1 channel driven, 1 kHz, 10 % THD, 8 ohms) FRONT L/R .150 W/ch CENTER .150 W SURROUND L/R .150 W/ch SURROUND BACK L/R .150 W/ch Dynamic Power Per Channel (IHF) FRONT L/R (1 channel driven) (8

23、/ 6 / 4 / 2 ohms) .130 / 170 / 200 / 240 W Damping Factor (20 Hz to 20 kHz, 8 ohms) FRONT L/R to SPEAKER-A .100 or more Input Sensitivity/Input Impedance (1 kHz, 100 W/8 ohms) AV5 etc. . 200 mV / 47 k-ohms Maximum Input Signal (1 kHz, 0.5 % THD) AV5 etc. (EFFECT ON) .2.3 V Output Level/Output Impeda

24、nce AUDIO OUT . 200 mV / 1.2 k-ohms SUBWOOFER (2 ch stereo and FRONT SP: small) . 1 V / 1.2 k-ohms ZONE2 OUT . 200 mV / 1.2 k-ohms Headphone Jack Rated Output/Output Impedance (1 kHz, 50 mV, 8 ohms) AV5 etc. input . 100 mV / 560 ohms Frequency Response (10 Hz to 100 kHz) AV5 etc., FRONT .0 / -3 dB T

25、otal Harmonic Distortion (20 Hz to 20 kHz, 50 W/8 ohms) AV5 etc. (PURE DIRECT) to FRONT SP OUT .0.06 % or less Signal to Noise Ratio (IHF-A Network) (Input shorted 250 mV) AV5 etc. (PURE DIRECT) to SP OUT . 100 dB or more Residual Noise (IHF-A Network) FRONT L/R to SP OUT .150 V or less Channel Sepa

26、ration (1 kHz / 10 kHz) AV5 etc. (Input 5.1 k-ohms shorted) . 60 dB or more / 45 dB or more Volume Control/Step .MUTE / -80 dB to +16.5 dB / 0.5 dB step Tone Control Characteristics Bass Boost/Cut . 6 dB / 0.5 dB step, at 50 Hz Turnover frequency .350 Hz Treble Boost/Cut .6 dB / 0.5 dB step, at 20 k

27、Hz Turnover frequency .3.5 kHz Filter Characteristics FRONT, CENTER, SURROUND, SURROUND BACK small (H.P.F.) .fc=40/60/80/90/100/110/120/160/200 Hz, 12 dB/oct. SUBWOOFER small (L.P.F.) .fc=40/60/80/90/100/110/120/160/200 Hz, 24 dB/oct. Optical Jack, Coaxial Jack Support Frequencies .32 kHz to 96 kHz

28、Video Section Video Signal Type Monitor out (Wall paper) U, C, R, K models .NTSC T, A, B, G, F, L, S, H models .PAL Video conversion .NTSC/PAL Composite Video Signal Level .1 Vp-p / 75 ohms Component Video Signal Level Y .1 Vp-p / 75 ohms Pb/Pr .0.7 Vp-p / 75 ohms Video Maximum Input Level (VIDEO Co

29、nversion Off) .1.5 Vp-p or more Video Signal to Noise Ratio . 50 dB or more Monitor Out Frequency Response (VIDEO Conversion Off) Component video signal level .5 Hz to 60 MHz, -3 dB FM Section Tuning Range U, C models .87.5 to 107.9 MHz R, L, S, H models .87.5 to 108.0 / 87.50 to 108.00 MHz T, K, A,

30、 B, G, F models .87.50 to 108.00 MHz 50 dB Quieting Sensitivity (IHF) (1 kHz, 100 % MOD.) Mono .3 V (20.8 dBf) Signal to Noise Ratio (IHF) Mono .71 dB Stereo .69 dB Harmonic Distortion (1 kHz) Mono .0.3 % Stereo .0.5 % Antenna Input . 75 ohms unbalanced SPECIFICATIONS 10 RX-V673/HTR-6065/RX-A720 RX-

31、V673/HTR-6065/ RX-A720 U .U.S.A. model C .Canadian model R .General model T.Chinese model K .Korean model A .Australian model B .British model G .European model F. Russian model L.Singapore model S .Brazirian model H .Thai model AM Section Tuning Range U, C models .530 to 1,710 kHz R, L, S, H models

32、 .530 to 1,710 / 531 to 1,611 kHz T, K, A, B, G, F models .531 to 1,611 kHz Antenna .Loop antenna General Power Supply U, C models .AC 120 V, 60 Hz R, S models .AC 110120/220240 V, 50/60 Hz T model .AC 220 V, 50 Hz K model .AC 220 V, 60 Hz A model .AC 240 V, 50 Hz B, G, F models .AC 230 V, 50 Hz L,

33、H models . AC 220240 V, 50/60 Hz Power Consumption U, C models .400 W / 500 VA R, L, S, H models .300 W T, K, A, B, G, F models .330 W Standby Power Consumption (reference data) HDMI control: OFF / Standby through: OFF .0.1 W (typical) HDMI control: ON / Standby through: ON INPUT: HDMI1 (HDMI no signal) .