Yamaha-DSPA-595-Service-Manual电路原理图.pdf

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1、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 specifically YAMAHA Products, are already known and understood by the users, and

2、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 product ow

3、ners 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 of firm does not constitute authorization, certification or recognition of any applicable technical capabil

4、ities, 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 are, ther

5、efore, 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 may ha

6、ve 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. 100661 AV AMPLIFIER DSP-A595 TO SERVICE PERSONNEL . 1 REMOTE C

7、ONTROL PANELS. 1 REAR PANELS . 2 SPECIFICATIONS.34 INTERNAL VIEW . 5 DISASSEMBLY PROCEDURES . 5 SELF DIAGNOSIS FUNCTION . 617 FACTORY PRESET . 18 CONTENTS AMP ADJUSTMENT . 19 IC DATA . 2029 DISPLAY DATA . 30 BLOCK DIAGRAM. 3132 PRINTED CIRCUIT BOARD . 3346 SCHEMATIC DIAGRAM .4752 PARTS LIST .5366 RE

8、MOTE CONTROL TRANSMITTER . 67 RadioFans.CN 收音机爱 好者资料库 1 DSP-A595 I TO SERVICE PERSONNEL 1. Critical Components information. Components having special characteristics are marked and must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (

9、For 120V Model only). When service has been completed, it is imperative that you 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 leak

10、age 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 by the California Health and We

11、lfare 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 your skin! When soldering, do

12、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. I REMOTE CONTROL PANELS M R and T modelsM B and G models WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTE

13、R OR EQUIVALENT INSULATING TABLE RadioFans.CN 收音机爱 好者资料库 2 DSP-A595 M T model M B model M G model M R model I REAR PANELS 3 DSP-A595 I SPECIFICATIONS IAUDIO SECTION Minimum RMS Output Power Per Channel (Power Amp. Section) MAIN L/R, REAR L/R 20Hz to 20kHz, 0.04% THD, 865W+65W 1kHz, 0.07% THD, 880W+8

14、0W CENTER 20Hz to 20kHz, 0.04% THD, 865W 1kHz, 0.07% THD, 880W Maximum Power (EIAJ) R, T models only MAIN L/R, REAR L/R 1kHz, 10% THD, 8105W+105W CENTER, 1kHz, 10% THD, 8105W Dynamic Power Per Channel (IHF) MAIN L/R 8/6/4/2 90W+90W/110W+110W/135W+135W/160W+160W DIN Standard Output Power Per Channel

15、G model only MAIN L/R, 1kHz, 0.7% THD, 4110W+110W IEC Power G model only MAIN L/R, 1kHz, 0.04% THD, 875W+75W Power Band Width MAIN L/R, 0.1% THD, 35W, 810Hz to 50kHz Damping Factor (SPEAKER A) MAIN L/R, 20Hz to 20kHz, 860 Input Sensitivity/Input Impedance PHONO (MM)2.5mV/47k CD etc.150mV/47k MAIN L/

16、R (EXTERNAL DECODER)150mV/47k CENTER150mV/40k SURROUND L/R150mV/40k SUB WOOFER150mV/40k Maximum Input Signal Level (1kHz) PHONO (MM), 0.1% THD110mV CD etc. (EFFECT ON), 0.5% THD2.2V Output Level/Output Impedance REC OUT150mV/1.2k SUB WOOFER (MAIN SP : SMALL)2.1V/1.2K B,G models only PRE OUT4V/1.2K H

17、eadphone Jack Rated Output/Impedance CD etc., Input=1kHz, 150mV, RL=80.5V/390 Frequency Response(20Hz to 20kHz) CD etc., MAIN00.5dB RIAA Equalization Deviation PHONO (MM)00.5dB Total Harmonic Distortion(20Hz to 20kHz) PHONO (MM) to REC OUT (1V)0.02% CD etc.(EFFECT OFF) to MAIN SP OUT(35W/8) 0.025% S

18、ignal-to-Noise Ratio(IHF-A-Network) PHONO (MM), Input 5mV shorted, REC OUT R, T models86dB B, G models81dB CD etc,(EFFECT OFF), Input 150mV shorted, SP OUT 96dB Residual Noise(IHF-A-Network) MAIN L/R, SP OUT150V Channel Separation(Vol. 30dB, EFFECT OFF) PHONO, Input shorted, 1kHz/10kHz60dB/55dB CD e

19、tc, Input 5.1k terminated, 1kHz/10kHz 60dB/45dB Tone Control Characteristics BASS: Boost/Cut10dB(50Hz) : Turnover Frequency350Hz TREBLE: Boost/Cut10dB(20kHz) : Turnover Frequency3.5kHz Filter Characteristics MAIN, REAR SP SMALL : H.P.F.fc=90Hz, 12dB/oct. SUB WOOFER : L.P.F.fc=90Hz, 18dB/oct. IVIDEO

20、SECTION Video Signal Type R modelNTSC/PAL T, B, G modelsPAL Video Signal Level1Vp-p/75 S-Video Signal LevelY:1Vp-p/75,C:0.286Vp-p/75 Maximum Input Level1.5Vp-p Signal-to-Noise Ratio50dB Monitor Out Frequency Response(3dB)5Hz10MHz IGENERAL Power Supply R modelAC110/120/220/240V, 50/60Hz T modelAC220V

21、, 50Hz B, G modelsAC230V, 50Hz Power Consumption R, T models310W B, G models300W Maximum Power Consumption R model only 5CH Simultaneous output, 10% THD650W AC Outlet R, T models, Switched x 3100W max(Total) B model, Switched x 1100W max G model, Switched x 2100W max(Total) Dimensions(W x H x D)435

22、x 151 x 391mm (17/1/8 x 5-15/16 x 15-3/8) Weight12.4kg(27Ibs. 9 oz) AccessoriesRemote Control Transmitter x 1 Battery (siza AA, R06) x 2 * Specifications subject to change without notice. R . General modelB . British model T. China modelG . European model Manufactured under license from Dolby Labora

23、tories Licensing Corporation.DOLBY , AC-3, Pro Logic, and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation. Copyright 1992 Dolby Laboratories, inc. All rights reserved. 4 DSP-A595 G DIMENSIONS Units: mm (inch) 21.5 (7/8) 435(17-1/8) 349.5(13-3/4) 391(15-3/8) 130(5-3/32)

24、 151(5-15/16) 20 (13/16) 21 (27/32) WARNING Do not change the IMPEDANCE SELECTOR switch setting while the power to this unit is on, otherwise this unit may be damaged. IMPEDANCE SELECTOR 5 DSP-A595 1 24 57890AB DEFGHIJKC #14 #8 #7 #13 #9 36 I DISASSEMBLY PROCEDURES (Remove parts in disassembly order

25、 as numbered.) 1. Removal of Top Cover Remove 4 screws (1) and 4 screws (2) in Fig. 1. 2. Removal of Front Panel a. Remove 5 knobs. b. Remove 6 screws (3) in Fig. 1. Fig.1 1 POWER TRANSFORMER 2 P.C.B. MAIN (3) 3 P.C.B. OPERATION (7) (R, T models only) 4 P.C.B. OPERATION (3) 5 P.C.B. MAIN (4) 6 P.C.B

26、. MAIN (8) 7 P.C.B. OPERATION (6) 8 P.C.B. MAIN (2) 9 P.C.B. MAIN (1) 0 P.C.B. INPUT (2) A P.C.B. INPUT (1) B P.C.B. INPUT (3) C P.C.B. MAIN (5) D P.C.B. OPERATION (5) E P.C.B. OPERATION (4) F P.C.B. MAIN (7) G P.C.B. OPERATION (1) H P.C.B. MAIN (6) I P.C.B. INPUT (4) J P.C.B. OPERATION (2) K P.C.B.

27、 DSP I INTERNAL VIEW Front Panel Top Cover Knob Knob 11111 11111 22222 33333 33333 Knob 6 DSP-A595 I SELF DIAGNOSIS FUNCTION 1. PURPOSE AND OPERATION The DSP-A595 has a Self Diagnosis Function to locate a faulty part, if any, by inspecting and taking measurements. There are 11 main items in the diag

28、nostic menu and some of them have sub-menu items as listed below. No. 1 2 3 4 5 6 7 8 9 10 11 SUB MENU 1. MAIN BYPASS 2. DSP 0dB 1. YSS908SRAM 2. YSS908 3. DSP FULL BIT 1. STATUS (BINARY FORM) 1. CENTER LARGE 2. EFFECT OFF 1. MAIN : SMALL 0dB 2. MAIN : LARGE 0dB 3. MAIN : LARGE 10dB 4. LFE/BASS : MA

29、IN CENTER : NONE 5. LFE/BASS : MAIN 6. LFE/BASS : SWFR 7. CENTER : NONE 8. CENTER : SMALL REAR : SMALL 9. FRONT MIX 1. EFFECT OFF 2. VFD DISP OFF 3. VFD DISP ALL 4. CHECKED PATTERN 5. RELEASE DATE 1. ALL 2. MAIN L 3. CENTER 4. MAIN R 5. REAR R 6. REAR L 7. LFE 1. INHIBIT(Inhibit Memory Init) 2. RESE

30、RVED (Init. Memory) 1. 2. KEY 3. TUNING SIGNAL 5. PS PROTECTION 1. DSP CPU STATUS 2. CHANNEL STATUS 3. VERSION INFORMATION 4. CHECK SUM 5. BSI0 (AC3/DTS) 6. BSI1 7. BSI2 8. BSI3 9. BSI4 10. BSI5 1. MAIN MC CHECK SUM 2. SUB MC CHECK SUM 3. MAIN M.C. VERSION 4. SUB M.C. VERSION 5. PORT INFORMATION 6.

31、EXIT MAIN MENU ANALOG THROUGH DSP THROUGH AC3/DTS THROUGH PRO LOGIC SPEAKERS SET EFFECT OFF /DISPLAY CHECK MANUAL TEST FACTORY PRESET AD DATA CHECK STATUS VERSION CHECK /DSP CPU SUM /EXIT REMOTE CONTROL CODE (KEY) 7A88 (1 (DSP mode) 7A89 (2 (DSP mode) 7A8A (3 (DSP mode) 7A8B (4 (DSP mode) 7A8C (5 (D

32、SP mode) 7A8D (6 (DSP mode) 7A8E (7 (DSP mode) 7A8F (8 (DSP mode) 7A90 (9 (DSP mode) 7A91 (0 (DSP mode) 7A12 (ENTER (DSP mode) 4. DC PROTECTION 7 DSP-A595 1. 2. 3. 4. 5. 6. 7. EFFECT LEVEL: MUTING: OFF INPUT (VIDEO): DVD/LD (DVD/LD) CENTER SPEAKER: LARGE REAR SPEAKER: LARGE MAIN SPEAKER: LARGE LFE/B

33、ASS OUT: SWFR CHANNELCENTERR SURL SURSWFR LEVEL (dB)0000 C. Start-up display The information of the protection function appears on the front panel display of the main unit. 2. BEGINNING AND CANCELLATION (1) STARTING UP THE FUNCTION AND THE DISPLAY After starting up, menu No. 1 is selected. A. How to

34、 start diagnostic program Using the front panel keys of the main unit. Hold down the INPUT MODE and + keys simultaneously, and press the STANDBY/ON key; submenu No. 1 of diagnosis main menu No. 1 will start. B. Settings for start-up of diagnostic program The settings used when starting the diagnosti

35、c program are as follows. +INPUT MODE TIME/ LEVEL SET MENU + keyINPUT MODE key FRONT PANEL 8 DSP-A595 G History of protection function Each case of the history of the protection function is displayed as shown below. Appears when the protection function has not been activated. Appears when the curren

36、t protection function has been activated. When power is turned on in an abnormal status, the power relay will come on, protection will operate immediately, and power will turn off. Appears when the power protection function has been activated. For the % value, the voltage at that point is shown by 5

37、V/100%. When power is turned on in an abnormal status, power will turn off after half a second. Appears when the power amp DC protection function has been activated. For the % value, the voltage at that point is shown by 5V/100%. When power is turned on in an abnormal status, power will turn off aft

38、er two seconds. G FL display at start-up of diagnostic program When the diagnostic program has started, the history (*2) of the protection function (*1) is displayed. If the protection function has been activated in the past, the type and voltage value are displayed. After a few seconds the diagnosi

39、s function menu will appear. (*1) If a faulty condition is detected such as excessive current, a bad power supply or excessive amplifier DC offset, the Power will be switched OFF automatically. (*2) The protection records will be cleared when RESERVED is selected in diagnosis menu No. 8 and FACTORY

40、PRESET is engaged. 1 DVD/LDNO PROTECT 1 DVD/LDI PROTECT 1 DVD/LDPS : 21% 1 DVD/LDDC : 19% (2) RELEASING METHOD The diagnosis function can be released by any of the following procedures. Take care with the setting of backup memory initialization menu (diagnosis No. 8) when releasing the diagnosis fun

41、ction: 1. Select diagnosis menu No. 11/submenu No. 6 EXIT. 2. Press the STANDBY/ON key on the main unit or STANDBY key on the remote control to turn power off. 9 DSP-A595 G Selection by using the remote control unit The remote control codes in the menu list (on page 6) correspond to the DSP program,

42、 test and effect keys. See the figure on the right. 3. OPERATION AND DISPLAY WHEN STARTING DIAGNOSIS FUNCTION (1) Selection of diagnostic menu The diagnostic menu and the sub-menu can be selected by using the front panel keys of the main unit or the remote control unit. G Selection by using the fron

43、t panel keys The main menu can be changed cyclically by using the TV SPORTS and DISCO keys, and the submenu, by using the ROCK CONCERT and CONCERT HALL keys. The DISCO or CONCERT HALL key will increase the main or submenu number. (2) Other functions available while diagnosis function is active Liste

44、d below are the other functions available while the diagnosis function is active. Selecting input source (Tape monitor/Ext. decoder) Adjusting effect level (Center, Rear, Sub-woofer) Adjusting master volume Muting on/off Power on/off (3) Diagnosis default status When not otherwise specified, default

45、 settings and values in each menu are as follows: All SPEAKERS : LARGE ALL electronic VRs : 0dB DYNAMIC RANGE : MAX LFE LEVEL : 0dB (10dB DOLBY DIGITAL LFE) CENTER DELAY : 0ms TV SPORTSDISCO ROCK CONCERT CONCERT HALL FRONT PANEL Main menu ForwardReverse Sub menu ForwardReverse D S P 10 DSP-A595 4. C

46、ONTENTS OF DIAGNOSIS FUNCTION This section describes the contents of the self diagnosis function in detail. No.1 ANALOG THROUGH The input is fixed to analog (A/D). There are two submenus. 1. MAIN BYPASS The MAIN L/R signals bypass the analog circuits to be output. For CENTER/SUBWOOFER, FRONT L/R and REAR L/R, the MAIN L/R signals via the DSP are output without being processed (through). (Remote control code 7A-88) : This shows that the device is not operating. 2. DSP 0dB MAIN L/R, CENTER/SUBWOOFER/LFE, FRONT L/R and REAR L/R pass through the DSP wi