Yamaha-HTR-5920-Service-Manual电路原理图.pdf

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1、SERVICE MANUAL 101001 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 user

2、s, 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 pro

3、duct 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 technical

4、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 ar

5、e, 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 body

6、 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. I CONTENTS TO SERVICE PERSONNEL . 2 FRONT PANEL . 2 REA

7、R PANEL . 3 REMOTE CONTROL PANEL . 3 SPECIFICATIONS. 46 INTERNAL VIEW . 6 DISASSEMBLY PROCEDURES . 79 MAINTENANCE FLOW CHART. 1017 DISPLAY DATA . 1819 IC DATA . 2022 PIN CONNECTION DIAGRAMS. 2324 BLOCK DIAGRAM. 25 PRINTED CIRCUIT BOARDS. 2630 SCHEMATIC DIAGRAMS. 3134 REPLACEMENT PARTS LIST . 3537 RE

8、MOTE CONTROL. 38 DIGITAL HOME THEATER SYSTEM YHT-170 AV RECEIVER HTR-5920 P.O.Box 1, Hamamatsu, Japan 2006 All rights reserved. This manual is copyrighted by YAMAHA and may not be copied or redistributed either in print or electronically without permission. HTR-5920 YHT-170 consists of the HTR-5920

9、and the NS-P170. This service manual is for the HTR-5920. For the NS-P170 service manual, please refer to the following publication number: NS-P170 101002 06.03 RadioFans.CN 收音机爱 好者资料库 HTR-5920 2 HTR-5920 WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE I TO SERVICE

10、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 (For 120V Models Only) When service has been completed, it is imperative to ve

11、rify that all exposed conductive surfaces are properly insulated from supply circuits. GMeter impedance should be equivalent to 1500 ohms shunted by 0.15F. 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

12、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 defects

13、 or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REA- SON 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 c

14、ontact with solder or components located inside the enclosure of this product, wash your hands before handling food. I FRONT PANEL U, C models RadioFans.CN 收音机爱 好者资料库 HTR-5920 3 HTR-5920 I REAR PANEL U, C models I REMOTE CONTROL PANEL HTR-5920 4 HTR-5920 151 (5-15/16) 130 (5-1/8)270 (10-5/8) 21 (13/

15、16) 21 (13/16) 12 (1/2) 303 (11-15/16) 435 (17-1/8) mm (inch)Unit : I Audio Section Minimum RMS Output Power Per Channel for FRONT, CENTER and SURROUND 1 kHz, 0.1 % THD, 6 ohms . 80 W 1 kHz, 10 % THD, 6 ohms . 110 W Frequency Response CD, etc. to FRONT L/R .10 Hz to 100 kHz, -3 dB Total Harmonic Dis

16、tortion 1 kHz, CD, etc. to FRONT L/R. 0.1 % Signal to Noise Ratio (IHF-A network) CD, etc. to FRONT L/R, effect off . 99 dB Residual Noise (IHF-A network) . 150 V Channel Separation (1 kHz / 10 kHz) CD, etc. (5.1 k-ohms terminated) to FRONT L/R .60 dB/45 dB or more Tone Control Characteristics (FRON

17、T L/R) BASS Boost/cut .10 dB (100 Hz) TREBLE Boost/cut . 10 dB (10 kHz) Phones Output .400 mV/470 ohms Input Sensitivity / Input Impedance CD, etc . . 200 mV/47 k-ohms Output Level / Output Impedance REC OUT .200 mV/1.2 k-ohms I Video Section Video Signal Type .NTSC Component Signal Level .1 Vp-p/75

18、 ohms Signal to Noise Ratio . 50 dB or more Frequency Response (Monitor out) Composite .5 Hz to 10 MHz, -3 dB Component .5 Hz to 60 MHz, -3 dB I FM Section Tuning Range .87.5 to 107.9 MHz 50dB Quieting Sensitivity (IHF, 100% mod.) Mono. 30 dBf Signal to Noise Ratio (IHF) Mono/stereo . 73 dB/70 dB Ha

19、rmonic Distortion (1 kHz) Mono/stereo .0.5 %/0.8 % Antenna Input .75 ohms unbalanced I AM Section Tuning Range .530 to 1,710 kHz Antenna . Loop antenna I General Power Supply U, C models. AC 120 V, 60 Hz Power Consumption U, C models. 220 W/240 VA Standby Power Consumption U, C models. 1 W Dimension

20、s (W x H x D) .435 x 151 x 303 mm (17-1/8 x 5-15/16 x 11-15/16) Weight . 8.0 kg (17 lbs. 10 oz.) Finish Silver color. U, C models Accessories Remote control x 1, Batteries (Size AA, R06, UM-3) x 2, AM loop antenna x 1, Indoor FM antenna x 1 * Specifications are subject to change without notice due t

21、o product improvements. U . U.S.A. modelC . Canada model Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic”, and the double-D symbol are trademarks of Dolby Laboratories. “DTS”, and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc. I SPECIFICATIO

22、NS DIMENSIONS HTR-5920 5 HTR-5920 SET MENU TABLE MAIN MENUSELECT MENUVALUE INITIAL 1 2 3 4 FRONT L CENTER FRONT R SURROUND R SURROUND L SUBWOOFER FRONT CENTER SURROUND SUBWOOFER FRONT CENTER SURROUND -10 dB to +10 dB, 0 dB, 1 dB step LRG, SML, NONE YES, NONE 1 ft to 30 ft, 10 ft, 1 ft step -2, -1, 0

23、 SPEAKER LEVEL SPEAKER SET SPEAKER DISTANCE DIMMER SURROUND MODE MAIN MENUSELECT MENUVALUE INITIAL PANORAMA DIMENSION CT WIDTH ON, OFF -3 to 3, STD, 1 step 0 to 7, 3, 1 step PLII MUSIC RESETTING THE SYSTEM Use this feature to reset all the parameters of this unit to the initial factory settings. Not

24、e: Be sure this unit is in standby mode. This procedure completely resets all the parameters of this unit. The initial factory settings are activated next time you turn on this unit. 1. With this unit in standby mode, hold down TONE CONTROL key on the front panel and press STANDBY/ON key. RESET NO a

25、ppears in the front panel display. Note: To cancel the initialization procedure without making any changes, press STANDBY/ON key. 2. Press TONE CONTROL key to select RESET YES. 3. Press STANDBY/ON key to confirm your selection and set this unit to the standby mode. HTR-5920 6 HTR-5920 AMP (2) P.C.B.

26、 AMP (3) P.C.B. POWER TRANSFORMER AMP (7) P.C.B. AMP (1) P.C.B. INPUT P.C.B. AMP (4) P.C.B. AMP (5) P.C.B. AMP (6) P.C.B. FRONT (3) P.C.B. FRONT (2) P.C.B. FRONT (1) P.C.B. 0BA 125463 7 8 9 1 2 3 4 5 6 7 8 9 0 A B Turn on the power while pressing these keys. Keys of main unit I INTERNAL VIEW FIRMWAR

27、E VERSION (Microprocessor information) To display the firmware version, do the following procedure. 1. Press the STANDBY/ON key while simultaneously pressing those two keys of the main unit as indicated in the figure below. 2. * Numeric values in the figure example are for reference. 3. Press STANDB

28、Y/ON key. 060105-01 HTR-5920 7 HTR-5920 2 1 1 4 3 3 3 Ground lead Ground lead CN83 CN96 Front Panel Unit CN11 Top Cover I DISASSEMBLY PROCEDURES Fig. 1 (Remove parts in the order as numbered.) Disconnect the power cable from the AC outlet. 1. Removal of Top Cover a. Remove 6 screws (1) and 7 screws

29、(2) (Fig. 1) b. Slide the Top Cover rearward to remove it. (Fig. 1) 2. Removal of Front Panel Unit a. Remove CN11, CN83, CN96. (Fig. 1) b. Remove 5 screws (3) and 5 screws (4). (Fig. 1) c. Release a hook on the right side of the Front Panel Unit, then remove the Front Panel Unit forward. (Fig. 1) HT

30、R-5920 8 HTR-5920 5677 8 CN12 TUNER Rear PanelCord Stopper Fig. 3 Fig. 4 3. Removal of Rear Panel and Tuner a. Remove CN12. (Fig. 2) b. Remove 2 screws (5). (Fig. 3) c. Remove Tuner. (Fig. 2) d. Remove 15 screws (6). (Fig. 3) e. Remove 2 screws (7). (Fig. 3) f. Remove 6 screws (8). (Fig. 4) g. Remov

31、e Cord Stopper. (Fig. 2) h. Remove Rear Panel. (Fig. 2) Fig. 2 HTR-5920 9 HTR-5920 9 0 INPUT P.C.B. AMP (4) P.C.B. Note: When assembling the AMP (4) P.C.B., be careful not to bend the pin of the connectors (BN92 and BN94). Note: When assembling the AMP (4) P.C.B., be careful not to bend the pin of t

32、he connectors (CN13 and CN14). Heat Sink AMP (1) P.C.B. CN95 CN93CN91CN90 B B A C 4. Removal of INPUT and AMP (4) P.C.B.s a. Remove 1 screw (9) and 2 screws (0). (Fig. 5) b. Remove INPUT and AMP (4) P.C.B.s. (Fig. 5) Fig. 5 5. Removal of AMP (1) P.C.B. a. Remove 2 screw (A) 5 screws (B) and 3 screw

33、(C). (Fig. 6) b. Remove CN90, CN91, CN93 and CN95. (Fig. 6) c. Remove AMP (1) P.C.B. with Heat Sink. Fig. 6 HTR-5920 10 HTR-5920 I MAINTENANCE FLOW CHART NO NO NO YES YES YES YES YES YES YES Power on Is FL display turns on? Are all keys on front panel work well? Is connection of cable correct? Are v

34、oltages of BN82 (pin 1 to 4) correct? Check connection of cable NO NO NO NO Check power supply of BN82 Check and replace IC81 Check power supply part Check KEY IN part (S851-854, S858-863, S865-871) Are waveforms of IC81 (pin 34 to 67) correct? Check and replace FL display Are input ports of IC81 (p

35、in76 to 78) work correct? Check and replace IC81 Start Is power voltage of each board correct? A FRONT P.C.B. 1/3 FRONT P.C.B. HTR-5920 11 HTR-5920 NO NO NO NO NO NO NO Is volume work well? Is output of Phones correct? Are inputs of IC81 (pin 71 and 72) correct? Check power supply part Check and rep

36、lace VR82 Check power supply part Check connection of cable Check circuit pattern Check and replace IC81 Is implementation of VR82 correct? Is power voltage of each board correct? A B Is power voltage of each board correct? Are connections of CN96 and BN73-2 correct? Check and replace JK81 YES YES Y

37、ES YES YES YES YES FRONT P.C.B. 2/3 HTR-5920 12 HTR-5920 Is work of remote control? Is waveform of RC81 correct? Check and replace IC81 Is power voltage of RC81 correct? Is power voltage of each board correct? FRONT P.C.B. is O.K. NO NO NO Check power supply part Check power supply part Check and re

38、place RC81 NO B YES YES YES YES FRONT P.C.B. 3/3 HTR-5920 13 HTR-5920 Is Input selector of IC21 correct? Are outputs of VCR, MD/CD-R correct? Check connections for BN14 and AMP board Check connections for CN11 and FRONT board Check and replace IC21 Analog part is O.K. Check and replace IC21 NO NO NO

39、 YES YES YES YES YES Power on NO NO Check and replace IC81 and JK12 Start Are power voltages of IC22 and IC23 correct? Are waveforms of IC21 (pin 67 to 69) correct? Are waveforms of IC21 (pin 76 to 79) correct? INPUT P.C.B. 1/3 (Analog part) INPUT P.C.B. HTR-5920 14 HTR-5920 Is recognition of digita

40、l source correct? Are input waveforms of IC32 (pin 57 and 59) correct? Are waveforms of IC32 (pin 14 to 20) correct? Check connections for external device Check power supply part and crystal oscillation part Are power voltage and oscillation of IC32 correct? Are waveforms of IC31 (pin 39 to 41) corr

41、ect? Are waveforms of IC32 (pin 39 to 50) correct? Are waveforms of IC31 (pin 6, 7 and 18) correct? NONO YES YES YES YES YES YES Power on NO NOCheck and replace IC32 NOCheck and replace IC32 NOCheck and replace IC32 NOCheck and replace IC32 Check analog part Start YES C D INPUT P.C.B. 2/3 (Digital p

42、art) HTR-5920 15 HTR-5920 Is output correct, when analog input Are waveforms of IC32 (pin 51 and 52) correct? Are power voltage and ground of IC32 correct? Digital part is O.K. Check power supply part NO YES YES YES NO NOCheck and replace IC32 C D INPUT P.C.B. 3/3 (Digital part) HTR-5920 16 HTR-5920 Does protect circuit work? Is connection of all cable correct? Check voltages CN94 pin 2 : low CN96 pin 5 : 1.5V Check Protect circuit and power supply part Check and replace speaker relay (RY62-64) Is implementation of speaker r