Yamaha-DSPA595-avr-sm维修电路原理图.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. 100678 AV AMPLIFIER DSP-A595a TO SERVICE PERSONNEL . 1 REMOTE

7、CONTROL PANELS. 1 REAR PANELS . 2 SPECIFICATIONS. 34 INTERNAL VIEW . 5 DISASSEMBLY PROCEDURES . 5 SELF DIAGNOSIS FUNCTION . 617 FACTORY PRESET . 18 ICONTENTS AMP ADJUSTMENT . 19 IC DATA .2030 DISPLAY DATA . 31 BLOCK DIAGRAM. 3233 PRINTED CIRCUIT BOARD . 3447 SCHEMATIC DIAGRAM . 4853 PARTS LIST . 546

8、7 REMOTE CONTROL TRANSMITTER . 68 RadioFans.CN 收音机爱 好者资料库 1 DSP-A595a 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 Measurem

9、ent (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

10、 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 by the California Health a

11、nd 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 your skin! When soldering

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

13、TESTER OR EQUIVALENT INSULATING TABLE RAV174 V383640 US RAV175 V38650 EU RadioFans.CN 收音机爱 好者资料库 2 DSP-A595a M T model M B model M G model M R model I REAR PANELS 3 DSP-A595a I SPECIFICATIONS IAUDIO SECTION Minimum RMS Output Power Per Channel (Power Amp. Section) MAIN L/R, REAR L/R 20Hz to 20kHz, 0

14、.04% THD, 865W+65W 1kHz, 0.07% THD, 880W+80W 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+1

15、60W DIN Standard Output Power Per Channel 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 PH

16、ONO (MM)2.5mV/47k CD etc.150mV/47k MAIN L/R (EXTERNAL DECODER)150mV/47k CENTER150mV/40k SURROUND L/R150mV/40k SUB WOOFER150mV/40k Maximum Input Signal Level (1kHz) PHONO (MM), 0.1% THD100mV CD etc. (EFFECT ON), 0.5% THD2.2V Output Level/Output Impedance REC OUT150mV/1.2k SUB WOOFER (MAIN SP : SMALL)

17、2.1V/1.2K B,G models only PRE OUT4V/1.2K Headphone 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.(

18、EFFECT OFF) to MAIN SP OUT(35W/8) 0.025% Signal-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) PHON

19、O, Input shorted, 1kHz/10kHz60dB/55dB CD etc, 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

20、 WOOFER : L.P.F.fc=90Hz, 18dB/oct. IVIDEO 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 Output Frequency Response(3dB) 5Hz10MHz IGENERAL Power Supply R

21、modelAC110/120/220/240V, 50/60Hz T modelAC220V, 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, Switche

22、d x 2100W max(Total) Dimensions(W x H x D)435 x 151 x 391mm (17-1/8 x 5-15/16 x 15-3/8) Weight12.5kg(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 mode

23、l 4 DSP-A595a 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) 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 Manufactu

24、red under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942 and other wirld- wide patents issued and pending. DTS, DTS Digital Surround, are trademarks of Digital Theater Systems, Inc. Copyright 1996 Digital Theater Systems, inc. All rights reserved. 5 DSP-A595a I DISASSEMBLY PROCEDUR

25、ES (Remove parts in disassembly order 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. OP

26、ERATION (3) 5 P.C.B. MAIN (4) 6 P.C.B. MAIN (8) 7 P.C.B. OPERATION (6) 8 P.C.B. MAIN (2) 9 P.C.B. MAIN (1) 0 P.C.B. VIDEO 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

27、) J P.C.B. OPERATION (2) K P.C.B. DSP I INTERNAL VIEW Front Panel Top Cover 11111 11111 22222 33333 33333 Knobs 1 23 4 567890AB DEFGHIJKC #14 #8 #7 #13 #9 6 DSP-A595a I SELF DIAGNOSIS FUNCTION 1. PURPOSE AND OPERATION The DSP-A595a has a Self Diagnosis Function to locate a faulty part, if any, by in

28、specting and taking measurements. There are 11 main items in the diagnostic 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. YSS918SRAM 2. YSS918 3. DSP FULL BIT 1. STATUS (BINARY FORM) 1. CENTER LARGE 2. EFFECT OFF 1. MAIN

29、: SMALL 0dB 2. MAIN : LARGE 0dB 3. MAIN : LARGE 10dB 4. LFE/BASS : MAIN 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

30、 R 5. REAR R 6. REAR L 7. LFE 1. INHIBIT(Inhibit Memory Init) 2. RESERVED (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

31、 SUM 3. MAIN M.C. VERSION 4. SUB M.C. VERSION 5. PORT INFORMATION 6. 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)

32、 7A89 (2 DSP mode) 7A8A (3 DSP mode) 7A8B (4 DSP mode) 7A8C (5 DSP 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-A595a STANDBY/ON + SET MENU TIME/ LEVEL INPUT MODE 1. 2. 3. 4. 5. 6. 7. EFFECT LEVEL: MUTING

33、: OFF INPUT (VIDEO): DVD/LD (DVD/LD) CENTER SPEAKER: LARGE REAR SPEAKER: LARGE MAIN SPEAKER: LARGE LFE/BASS OUT: SWFR CHANNELCENTERR SURL SURSWFR LEVEL (dB)0000 C. Start-up display The protection function information appears on the front panel display of the main unit. 2. BEGINNING AND CANCELLATION

34、(1) STARTING UP THE FUNCTION AND THE DISPLAY After starting up, menu No. 1 is selected. A. How to start diagnostic program Using the front panel keys of the main unit. and then press the STANDBY/ON key (Step 2). Plug in the AC power cord , and, with Power OFF, hold down the INPUT MODE and + keys sim

35、ultaneously (Step 1), Submenu No. 1 of the Diagnosis Main Menu No. 1 will start. B. Settings for start-up of diagnostic program The settings used when starting the diagnostic program are as follows. + key STANDBY/ON key INPUT MODE key FRONT PANEL Step2. Press the STANDBY/ON keyStep1. Hold down the I

36、NPUT MODE and + key simultaneously. 8 DSP-A595a 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 current protection function has been activated. When power i

37、s 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 5V/100%. When power is turned on in an abnormal status,

38、 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 after two seconds. G FL display at start-up of diagnostic

39、 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 diagnosis function menu will appear. (*1) If a faulty conditio

40、n 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 PRESET is engaged. 1 DVD/LDNO PROTECT 1 DVD/LDI PROTEC

41、T 1 DVD/LDPS : 21% 1 DVD/LDDC : 19% (2) EXITING METHOD The diagnosis function can be exited by any of the following procedures. Take care with the setting of backup memory initialization menu (diagnosis No. 8) when releasing the diagnosis function: 1. Select diagnosis menu No. 11/submenu No. 6 EXIT.

42、 2. Press the STANDBY/ON key on the main unit or STANDBY key on the remote control to turn power off. 9 DSP-A595a G Selection by using the remote control unit The remote control codes in the menu list (see right column on page 6) correspond to the DSP program test and effect keys. See the figure on

43、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. (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, Subwoofer) 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 (DOLBY DIGITAL, DTS) CENTER DELAY : 0ms G Selection by using the front panel keys The main menu can be changed cyclically by using the TV SPORTS and DISCO keys, and th

46、e submenu, by using the ROCK CONCERT and CONCERT HALL keys. The DISCO or CONCERT HALL key will increase the main or submenu number. TV SPORTSDISCO ROCK CONCERT CONCERT HALL FRONT PANEL Main menu ForwardReverse Sub menu ForwardReverse 7A D S P 10 DSP-A595a 4. CONTENTS 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/LFE, FRONT L/R and REAR L/R, t