Yamaha-PC9501N-pwr-sm 维修电路原理图.pdf

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1、SERVICE MANUALCONTENTS（目次）SPECIFICATIONS（総合仕様）.3/4PANEL LAYOUT（）.5CIRCUIT BOARD LAYOUT（）.6DIMENSIONS（寸法図）.7PERFORMANCE GRAPHS（特性図）.8DISASSEMBLY PROCEDURE（分解手順）.9NOTES ON WIRING（配線上注意）.14/15LSI PIN DESCRIPTION（LSI 端子機能表）.16IC BLOCK DIAGRAM（IC 図）.17CIRCUIT BOARDS（基板図）.19INSPECTIONS（検査）.28/36PARTS LIST

2、BLOCK DIAGRAM（）WIRING DIAGRAM（基板結線図）OVERALL CIRCUIT DIAGRAM（総回路図）PA011767200412-441000HAMAMATSU, JAPANCopyright (c) Yamaha Corporation. All rights reserved. PDF-K006 05.02POWER AMPLIFIERPC9501N（ECF ： 無塩素系漂白） 使用。This document is printed on chlorine free (ECF) paper.RadioFans.CN 收音机爱 好者资料库PC9501N2 * T

3、his applies only to products distributed by YAMAHA KEMBLE MUSIC (U.K.) LTD.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 P

4、roducts, are already 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 s

5、pecified. For these reasons, we advise all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or the appointed service representative.IMPORTANT : This presentation or sale of this manual to any individual or firm does not constitute authorization cer

6、tification, recognition of any applicable technical capabilities, or establish a principal-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 str

7、iving to improve Yamaha products. Modifications are, therefore, inevitable and changes in specification 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 exp

8、ensive components. Discharge any static electricity your body may have accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus).IMPORTANT :Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the u

9、nit. 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 Welfare Agency (and possibly other enti

10、ties) 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 WHAT SO EVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose ey

11、es 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.WARNING: THIS APPARATUS MUST BE EARTHEDIMPORTANTTHE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE:GREEN-AND-YELLO

12、W : EARTHBLUE : NEUTRALBROWN : LIVEAs the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows:The wire which is coloured GREEN and YELLOW must be connected to the terminal in the plug which

13、is marked by the letter E or by the safety earth symbol or coloured GREEN and YELLOW. The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.The wire which is coloured BROWN must be connected to the terminal which is marked with the lett

14、er L or coloured RED. WARNINGComponents having special characteristics are marked and must be replaced with parts having specification equal to those originally installed.印商品、 安全維持重要部品。 交換場合、安全必指定部品使用 。RadioFans.CN 收音机爱 好者资料库PC9501N3 SPECIFICATIONSPower output level (Rated power)120 V (U, V, T)/240

15、V (A)230 V (H, B, W, K, O)1 kHz, THD+N=1 %8 /STEREO1000 W x 21050 W x 24 /STEREO1600 W x 21650 W x 28 /BRIDGE3200 W3300 W20 Hz-20 kHz, THD+N=0.1 %8 /STEREO925 W x 2950 W x 24 /STEREO1400 W x 21500 W x 28 /BRIDGE2800 W3000 W1 kHz, 20 mS nonclip2 /STEREO2300 W x 22300 W x 24 /BRIDGE4600 W4600 WPower b

16、andwidth10 Hz-40 kHz (THD+N=0.5 %)Half powerTotal harmonic distortion (THD+N)0.1 %20 Hz-20 kHz, Half powerFrequency responseMAX0 dBRL=8 , Po=1 W,TYP0 dBf=20 Hz-50 kHzMIN1 dBIntermodulation distortion (IMD)0.1 %60 Hz:7 kHz, 4:1, Half powerChannel separation70 dBHalf power, RL=8 , 1 kHz,Vol. max., Inp

17、ut 600 shuntResidual noise70 dBuVol. min., 20 Hz-20 kHz (DIN AUDIO)SN ratio106 dB20 Hz-20 kHz (DIN AUDIO)Damping factor800RL=8 , f=1 kHzSensitivity+9 dBuVol. max., Rated power into 8 Voltage gainTYP32 dBVol. max.Maximum input voltageMIN+22 dBuInput impedanceTYP20 k/Balanced, 10 k/UnbalancedControlsF

18、ront panelPOWER switch (ON/OFF)Volume (31 positions) /chRear panelMODE switch (STEREO/BRIDGE/PARALLEL)HPF switch (ON/OFF) /ch fc=20 Hz 12 dB/octaveDIP switch (6P)ConnectorsInputXLR-3-31 type /chEuroblock connector (balance) /chOutputSPEKON /ch, 5-way binding postsNetworkRJ45 x 2PowerAC inletIndicato

19、rsPOWER/STAND-BYGreen/OrangePROTECTIONRedTEMPRed (heatsink temp85C)REMOTEGreenLevel meters10 points LED meter /chLoad protectionPOWER switch ON muting, DC detectionAmp. protectionTemp. detection (heatsink temp90C), VI limiter (RL1 )LimiterComp.: THD0.5 %CoolingDual variable-speed fanPower requiremen

20、tsU, V, T120 V, 60 HzH, B, W, K, O230 V, 50/60 HzA240 V, 50/60 HzPower consumptionIdling55 WOutput power, 4 750 W (U, V, T)/1000 W (A)1100 W (H, B, W, K, O)Dimensions (W x H x D)480 x 88 x 456 mmWeight13 kgAccessoriesPower cord, Security cover, Owners manual, 3-pin Euroblock connector x 20 dBu=0.775

21、 Vrms, Half power=1/2 Output power (3 dB below rated power)PC9501N4総合仕様出力1kHz、 THD N 18/STEREO1000W 24/STEREO1500W 28/BRIDGE3000W20Hz 20kHz、 THD N 0.18/STEREO900W 24/STEREO1300W 28/BRIDGE2600W1kHz、 20mS nonclip2/STEREO2200W 24/BRIDGE4400W出力帯域幅10Hz 40kHz （THD N=0.5）Half power全高調波帯域 （THD N） 0.120Hz 20

22、kHz、 Half power周波数特性MAX0dBRL 8、 Po 1W、TYP0dBf 20Hz 50kHzMIN 1dB混変調歪率 （IMD） 0.160Hz ： 7kHz、 4 ： 1、 Half power 70dBHalf power、 RL 8、 1kHz、 最大、 入力 600 残留 70dBu 最小、 20Hz 20kHz （DIN AUDIO）SN 比106dB20Hz 20kHz （DIN AUDIO） 800RL 8、 f 1kHz入力感度 9dBu 最大、 Rated power ： 8TYP32dB 最大最大許容入力電圧MIN 22dBu入力TYP20k/ 型、 1

23、0k/ 型 POWER （ON/OFF） （31 ）MODE （STEREO/BRIDGE/PARALLEL）HPF （ON/OFF） fc=20Hz 12dB/octaveDIP （6P） 入力XLR-3-31 （）出力、 5 RJ45 2POWER/STAND-BY緑 / PROTECTION赤TEMP赤 （ 温度 85 ）REMOTE緑10 LED POWER 、 DC 検出 温度検出 （ 温度 90 ）、 VI （RL 1） ： THD 0.5 連続可変式 電源100V、 50/60Hz消費電力無信号55W規定出力、 4950W最大外形寸法 （W H D）480 88 456mm重量1

24、3kg付属品 、 取扱説明書、 3 20 dBu=0.775 Vrms, Half power=1/2 Output power (3 dB below rated power)PC9501N5 PANEL LAYOUT（） Front Panel（）1 POWER/STAND-BY switch and indicator2 REMOTE indicator3 PROTECTION indicator4 TEMP indicator5 Level meters6 Volume knobs7 Air intakes8 Security cover1 POWER/STAND-BY 、2 REMO

25、TE 3 PROTECTION 4 TEMP 5 67吸気口8 Rear Panel（）1 XLR inputs2 MODE switch3 HPF switches4 SPEAKERS jacks5 DATA PORT jacks6 AMP ID switch7 Euroblock connector8 AC inlet (except PC9501N (J)9 GND terminals1 XLR 入力端子2 MODE 3 HPF 4 SPEAKERS 端子5 DATA PORT 端子6 AMP ID 78 AC （PC9501N (J)除）9 GND 端子TEMPPROTECTIONRE

26、MOTEPOWER/STAND-BYOFFON/EEEngineCLIP869121518212427-dBAB14121086420161820253035501412108642016182025303550POWER AMPLIFIER-dBABPC 9501N20HzIn case of PC9501N (J)（PC9501N (J)場合）20 Hz20 HzPC9501N6 CIRCUIT BOARD LAYOUT（）IN10 3/5IN10 2/5PS10 2/2PS10 1/2IN10 4/5IN10 5/5PA10AchPA10BchIN10 4/5IN10 1/5 Front

27、 View（正面図） Side View（側面図） Top View（上面図） Side View（側面図） Rear View（背面図）PC9501N7 DIMENSIONS（寸法図）POWER AMPLIFIERPC 9501N480884564643802625303703025Units: mm（単位）PC9501N8 PERFORMANCE GRAPHS（特性図）110100100010000110100100010000Output PowerWPower consumptionWPower ConsumptionWMode:STEREOBoth chPC9501N9 DISASS

28、EMBLY PROCEDURE（分解手順）1.Top Cover (Time required: about 2 minutes)1-1.Remove the nine (9) screws marked 280. The top cover can then be removed. (Fig. 1)2.Rear Assembly (Time required: about 4 minutes)2-1.Remove the top cover. (See Procedure 1.)2-2.Remove the six (6) screws marked 240. The rear assemb

29、ly can then be removed. (Fig. 2)With PC9501N of the J specification, remove the screw marked 90. (Fig.1)1.（所要時間：約2分）1-1.2809本外、 外。(図1)2.Assy（所要時間：約4分）2-1. 外 。 （1 項参照)2-2.2406本外、 Assy 外。（図2)PC9501N (J)仕向90外。(図1)30: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190) + B 90: Bind Head Screw 4.0X8 MFZN2

30、BL (EG340360) + 小100: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190) + B 280: Bonding Tapping Screw-B 4.0X8 MFZN2BL (VR779900) B Fig.1 （図 1）240: Bonding Tapping Screw-B 4.0X8 MFZN2BL (VR779900) B 330: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190) + B Fig.2 （図 2）28028028028010030b30b409030aP

31、S10 1/2IN104/5I/O rock240240330240PC9501N103.IN10 1/5 Circuit Board (Time required: about 5 minutes)3-1.Remove the top cover. (See Procedure 1.)3-2.Remove the rear assembly. (See Procedure 2.)3-3.Remove the two (2) screws marked 330 and then remove the SP terminal cover. (Fig. 2)3-4.Remove the one (

32、1) screw marked R70 , two (2) screws marked R80 , four (4) screws marked R90 and four (4) screws marked R100. The IN10 1/5 circuit board can then be removed. (Fig. 3)4.IN10 4/5 Circuit Board (Time required: about 5 minutes)4-1.Remove the top cover. (See Procedure 1.)4-2.Remove the rear assembly. (Se

33、e Procedure 2.)4-3.Remove the four (4) screws marked 30a. The IN10 4/5 circuit board can then be removed. (Fig. 1)5.IN10 5/5 Circuit Board (Time required: about 3 minutes)5-1.Remove the top cover. (See Procedure 1.)5-2.Remove the two (2) screws marked R60. The IN10 5/5 circuit board can then be remo

34、ved. (Fig. 3)3.IN10 1/5 （所要時間：約5分） 3-1. 外。 (1 項参照)3-2. Ass y 外。 (2 項参照)3-3.3302本外、 外。 (図2)3-4.R70 1 本、 R80 2 本、 R90 4本、 R1004 本外、 IN10 1/5 外。 (図3)4.IN10 4/5 （所要時間：約5分）4-1. 外。 (1項参照)4-2. Ass y 外。 (2項参照)4-3.30a4本外、 IN10 4/5 外。(図1)5.IN10 5/5 （所要時間：約3分）5-1. 外。 (1項参照)5-2.R602本外、 IN10 5/5 外。（図3) R60: Pan

35、Head Screw 2.6X6 MFZN2BL (VC990500) + 小R70: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300) B R80: Bind Head Tapping Screw-B 3.0X12 MFZN2BL (VQ074600) + B R90: Bind Head Tapping Screw-B 2.6X8 MFZN2BL (VB096700) + B R100: Flat Head Tapping 3.0X8 MFZN2BL (EP600790) + 皿 B Fig.3 （図 3）6.Front Panel Asse

36、mbly (Time required: about 4 minutes)6-1.Remove the three (3) screws marked 210a from the side cover L, three (3) screws marked 210b from the side cover R and two (2) screws marked 220. The front panel assembly can then be removed. (Fig. 4)6.Assy（所要時間：約4分）6-1. 210a3本 R210b 3本外、 220 2本外、 Ass y 外。 (図4

37、)2020R50IN10 1/5R90R90R70R100R100 R10R80R60IN10 5/5PC9501N11185: Flat Washer 4X9X0.8 MFZN2BL (VP367000) 平座金丸190: Bonding Tapping Screw-B 4.0X8 MFZN2BL (VR779900) B 210: Bonding Tapping Screw-B 4.0X8 MFZN2BL (VR779900) B 220: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190) + B Fig.4 （図 4）7.DC Fan

38、(Time required: about 4 minutes)7-1.Remove the top cover. (See Procedure 1.)7-2.Remove the front panel assembly. (See Procedure 6.)7-3.Remove the two (2) screws marked F30 from the DC fan and then remove the fan. Use the same for both right and left fans. (Fig. 5)8.Power Switch (Time required: about

39、 8 minutes)8-1.Remove the top cover. (See Procedure 1.)8-2.Remove the front panel assembly. (See Procedure 6.)8-3.Remove the DC fans. (See Procedure 7.)8-4.Remove the four (4) screws marked F180 and then remove the two front covers. (Fig. 5)8-5.Remove the six (6) screws marked F150 and then remove t

40、he front panel. (Fig. 6)8-6.Remove the power switch knob and the two (2) screws marked F40. The power switch (PS10 2/2 circuit board mount) can then be removed. (Fig. 6)8-7.Remove the power switch from the PS10 2/2 circuit board.7.DC （所要時間：約 4 分）7-1. 外 。 (1項参照)7-2. Ass y 外 。 (6項参照)7-3.DC F30 2本外、 外

41、。 左右 同方法外。 (図5)8.（所要時間：約8分）8-1. 外 。 (1項参照)8-2. Ass y 外 。 (6項参照)8-3. DC 外 。 (7項参照)8-4.F180 4 本外、 印刷及 処理 2 所外。 (図5)8-5.F1506本外、 外 。(図6)8-6. 外、 F40 2 本外、 （PS10 2/2 ） 外。 (図6)8-7.PS10 2/2 外。F30: Bind Head Screw 4.0X30 MFZN2BL (VT229100) + 小F180: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190) + B Fig.

42、5 （図 5）220PS10 1/2IN10 1/5210b190185210a190Side Cover R(R)Side Cover L (L)185F180F180F30F30F30F30PC 9501NFront Cover（印刷)Front Cover（処理)PC9501N129.IN10 2/5 Circuit Board (Time required: about 4 minutes)9-1.Remove the top cover. (See Procedure 1.)9-2.Remove the front panel assembly. (See Procedure 6.)

43、9-3.Remove the DC fans. (See Procedure 7.)9-4.Remove the four (4) screws marked F180 and then remove the two front covers. (Fig. 5)9-5.Remove the six (6) screws marked F150 and then remove the front panel. (Fig. 6)9-6.Remove the two (2) screws marked F70. The IN10 2/5 circuit board can then be remov

44、ed. (Fig. 6)10.IN10 3/5 Circuit Board (Time required: about 4 minutes)10-1. Remove the top cover. (See Procedure 1.)10-2. Remove the front panel assembly. (See Procedure 6.)10-3. Remove the DC fans. (See Procedure 7.)10-4. Remove the two front covers. (See Step 9-4.)10-5. Remove the front panel. (Se

45、e Step 9-5.)10-6. Remove the two (2) attenuation knobs A/B and two (2) hexagonal nuts. The IN10 3/5 circuit board can then be removed. (Fig. 6)9.IN10 2/5（所要時間：約4分）9-1. 外。 (1項参照)9-2. Ass y 外。 (6項参照)9-3.DC 外 。 (7項参照)9-4. F180 4本外、 印刷及 処理 2 所外。 (図5)9-5.F150 6本外、 外。(図6)9-6.F702本外、 IN10 2/5 外 。(図6)10.IN1

46、0 3/5 （所要時間：約4分）10-1. 外。 (1項参照)10-2. Ass y 外。 (6項参照)10-3. DC 外 。 (7項参照)10-4. 印刷及 処理 2 所外。 (9-4.項参照)10-5. 外。 (9-5.項参照)10-6. A/B 2 VR六角 2 外、 IN10 3/5 外。 (図6)F40: Bind Head Screw 3.0X6 MFZN2BL (EG330360) 小F70: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190) F150: Flat Head Screw 4.0X8 MFZN2BL (VA221

47、200) 皿小Fig.6 （図 6）11.PA Unit (Time required: about 7 minutes)11-1. Remove the rear assembly. (See Procedure 2.)11-2. Remove the top cover. (See Procedure 1.)11-3. Remove the nine (9) screws marked 190 and three (3) screws marked 210. The side cover and PA unit can then be removed. Use the same metho

48、d for both A and B channels. (Fig. 4)Flat washers marked 185 are attached between the side cover and PA unit. Take care not to lose flat washers marked 185 when removing screws marked 190.11.PA （所要時間：約 7 分）11-1. Ass y 外。 (2項参照)11-2. 外。 (1項参照)11-3. 190 9 本 210 3 本外、 外、 PA 外 。 A、 B 同方法外。 (図4)PA間、平座金18

49、5 。190外、185平座金紛失注意。F150F150Attenuation knob ()PS10 2/2IN10 3/5F60 F80Power switch knob ()Hexagonal nut (六角)F10F70F40IN10 2/5PC9501N1312.PA10 Circuit Board (Time required: about 11 minutes)12-1. Remove the top cover. (See Procedure 1.)12-2. Remove the PA unit. (See Procedure 11.)12-3. Remove 33 screw

50、s marked P60 fixing the pair transistor, FET and diode, three (3) screws marked P80 and six (6) screws marked P40. The PA10 circuit board can then be removed. (Fig. 7)12.PA10 （所要時間：約 11 分）12-1. 外 。 (1項参照)12-2. PA 外 。 (11項参照)12-3. 、 FET 止P60 33本 P803本、P406本外、PA10 外 。 (図7）P40: Bind Head Screw 3.0X6 MF