Yamaha-PC4800N-pwr-sm 维修电路原理图.pdf

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1、PC9500N/PC4800N1SERVICE MANUALPA011652PC9500N: 20020925-400000PC4800N: 20020925-330000 1.361K-3611 Printed in Japan 2002.9HAMAMATSU, JAPAN CONTENTSSPECIFICATIONS. 3/4PANEL LAYOUT. 5BLOCK DIAGRAM. 6WIRING. 8DIMENSIONS. 10DISASSEMBLY PROCEDURE. 11LSI PIN DESCRIPTION. 16IC BLOCK DIAGRAM. 17CIRCUIT BOAR

2、DS. 19INSPECTIONS. 30/37PARTS LISTOVERALL CIRCUIT DIAGRAMS（ECF：無塩素系漂白）使用。POWER AMPLIFIERSPC9500N（総合仕様）（）（）（結線図）（寸法図）（分解手順）（LSI端子機能表）（IC図）（基板図）（検査）（総回路図）（目次）RadioFans.CN 收音机爱 好者资料库PC9500N/PC4800N2WARNING: THIS APPARATUS MUST BE EARTHEDIMPORTANTTHE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE W

3、ITH THE FOLLOWING CODE: GREEN-AND-YELLOW : EARTH BLUE : NEUTRAL BROWN : 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 con

4、nected to the terminal in the plug which 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 th

5、e terminal which is marked with the letter L or coloured RED.* This applies only to products distributed by YAMAHA KEMBLE MUSIC (U.K.) LTD.WARNINGComponents having special characteristics are marked and must bereplaced with parts having specification equal to those originally installed.IMPORTANT NOT

6、ICEThis manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumedthat basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and under-stood by the users, and have therefore not been resta

7、ted.WARNING :Failure to follow appropriate service and safety procedures when servicing this product may result in per-sonal injury, destruction of expensive components and failure of the product to perform as specified. Forthese reasons, we advise all Yamaha product owners that all service required

8、 should be performed by anauthorized Yamaha Retailer or the appointed service representative.IMPORTANT :This presentation or sale of this manual to any individual or firm does not constitute authorization certifi-cation, recognition of any applicable technical capabilities, or establish a principal-

9、agent relationship ofany form.The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, andservice departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitableand changes in speci

10、fication are subject to change without notice or obligation to retrofit. Should any discrepancy appear toexist, please contact the distributors Service Division.WARNING :Static discharges can destroy expensive components. Discharge any static electricity your body may haveaccumulated by grounding yo

11、urself to the ground bus in the unit (heavy gauge black wires connect tothis bus.)IMPORTANT :Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply powerto the unit.WARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD

12、. In addition, other electrical/electronic and/or plastic (Whereapplicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possiblyother entities) to cause cancer and/or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/E

13、LECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHATSO EVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or exposeeyes to solder/flux vapor!If you come in contact with solder or components located inside the enclosure of t

14、his product, wash your hands before handlingfood.印商品、安全維持重要部品。交換場合、安全必指定部品使用下。RadioFans.CN 收音机爱 好者资料库PC9500N/PC4800N3General SpecificationsPC9500NPC4800N120 V (US)/ 240 V (A)230 V (EU)120 V (US)/ 240 V (A)230 V (EU)Power Output Level (Rated Power)8/STEREO1000 W x 21050 W x 2550 W x 2500 W x 21 kHz4/

15、STEREO1600 W x 21650 W x 2850 W x 2800 W x 2THD+N= 1%8/BRIDGE3200 W x 13300 W x 11700 W x 11600 W x 18/STEREO925 W x 2950 W x 2475 W x 2450 W x 220 Hz20 kHz4/STEREO1400 W x 21500 W x 2725 W x 2700 W x 2THD+N= 0.1%8/BRIDGE2800 W x 13000 W x 11450 W x 11400 W x 11 kHz2/STEREO2300 W x 22300 W x 21200 W

16、 x 21200 W x 220mS nonclip4/BRIDGE4600 W x 14600 W x 12400 W x 12400 W x 1Power BandwidthHalf Power10 Hz40 kHz (THD+N= 0.5%)Total Harmonic Distortion (THD + N)20 Hz20 kHz, Half Power0.1%Frequency ResponseRL= 8, Po= 1 W0 dB, 0.5 dB, 1 dB f=20 Hz50 kHzIntermodulation distortion (IMD)60 Hz:7 kHz, 4:1,

17、Half Power0.1%Channel SeparationHalf Power, RL= 8, 1 kHz70 dBVol. max., input 600 shuntResidual Noise Vol. min.20 Hz20 kHz (DIN AUDIO) 70 dBSN Ratio20 Hz20 kHz (DIN AUDIO)106 dB103 dBDamping FactorRL=8, 1f= 1 kHz800Sensitivity (Vol. max.) Rated Power into 8+9 dB+6 dBVoltage Gain (Vol. max.)32 dBInpu

18、t Impedance30 k/Balanced, 15 k/UnbalancedControlsFront PanelPOWER switch (ON/OFF)Volume (31 position) /chRear PanelMODE switch (STEREO/BRIDGE/PARALLEL)HPFswitch (ON/OFF) /ch fc=40 HzDIP switch (6P)ConnectorsInputXLR-3-31 type/chEuroblock connector (balance)/chOutputSPEAKON /ch, 5-way binding postsNE

19、TWORKRJ45POWERAC INLETIndicatorsPOWER/STAND-BYGreen/OrangePROTECTIONRedTEMPRed (heatsink temp 85C)REMOTEGreenMeters10 points LED meterLoad protectionPOWER switch ON muting, DC detection,Amp. protectionTemp. detection (heatsink temp 90C), VI limiter (RL 1 )LimiterComp. : THD 0.5%CoolingDual Variable-

20、speed fanPower RequirementsUS & Canada120 V, 60 HzEurope230 V, 50/60 HzOther240 V, 50/60 HzPower ConsumptionIdling55 W40 W1/8 output power, 4120 V 750 W 230/240 V 1100 W120 V 450 W 230/240 V 600 WMaximum output, 44500 W2500 WDimensions (W x H x D)480 x 88 x 456 mmWeight13 kg12.5 kgAccessoriesPower c

21、ord, Security cover, Owners Manual, Euroblock connector (2)0 dB=0.775 Vrms, Half Power=1/2 Power Output Level (Rated Power)For European ModelPurchaser/User information specified in EN55103-1 and EN55103-2.Inrush Current: 20A (PC9500N) / 25A (PC4800N)Conformed Environment: E1, E2, E3 and E4.SPECIFICA

22、TIONS（総合仕様）PC9500N/PC4800N4一般仕様PC9500NPC4800N出力8 /STEREO1000W 2500W 21kHz4 /STEREO1500W 2750W 2THD N=1%8 /BRIDGE3000W 11500W 18 /STEREO900W 2450W 220Hz 20kHz4 /STEREO1300W 2650W 2THD N=0.1%8 /BRIDGE2600W 11300W 11kHz2 /STEREO2200W 21100W 220mS nonclip4 /BRIDGE4400W 12200W 1出力帯域幅Half Power10Hz 40kHz（

23、THD N=0.5%）全高調波歪率（THD N）20Hz 20kHz、Half Power 0.1%周波数特性RL8 、Po 1W0dB、 0.5dB、1dBf 20Hz 50kHz混変調歪率60Hz：7kHz、4：1、Half Power 0.1%間Half PowerRL 8 1kHz . max.入力 600 70dB残留 min.20Hz 20kHz (DIN AUDIO)70dBSN 比20Hz 20kHz (DIN AUDIO)106dB103dBRL=8 、1f 1kHz800入力感度（ max.）Rated Power8 +9dB+6dB（ max.）32dB入力30k 型、1

24、5k 型POWER ：ON/OFF：31 （単位）MODE ：STEREO/BRIDGE/PARALLELHPF ：ON/OFF（単位）fc 40HzDIP （6P）INPUTXLR-3-31 （） （単位）OUTPUT（単位）、5 NETWORKRJ45POWERAC （PC4800N）POWER/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55W40W1/8 出力、4 950W500W最大出力、4 4500W

25、2500W最大外形寸法（W H D）480 88 456mm重量13kg12.5kg付属品電源（PC4800N） 、取扱説明書、（2 個）0dB0.775 Vrms, Half Power1/2 Power Output Level （Rated Power）PC9500N/PC4800N5PANEL LAYOUTIn case of PC9500N (J)（PC9500N （J） 場合） 12345678 Front PanelPOWER/STAND-BY switch and indicatorREMOTE indicatorPROTECTION indicatorTEMP indicat

26、orLevel metersVolume knobsAir intakesSecurity cover123456789XLR inputsMODE switchHPF 40 switchesSPEAKERS jacksDATA portsAMP ID switchEuroblock connectorAC inlet (only PC4800N)GND terminals Rear Panel（）123456789XLR 入力端子MODEHPF 40SPEAKERS端子DATA AMP ID AC（PC4800N ）GND 端子12345678POWER/STAND-BY 、REMOTE P

27、ROTECTION TEMP 吸気口（）（）PC9500N/PC4800N6AAIC401VR401VR402A ATTA ATTB ATTB ATTJK401JK402INPUTSW801SW101JK801JK802IC4011325676727491, 9257601021045466494, 9910, 1195, 9693, 9870, 696.4512MClock7175112PIC801IC802CN405-37PCN801-37PCN405-37PCN801-37PCN801-37PCN405-37PCN602-9PJK403IC402-1/2IC402-2/2IC403-1/

28、2IC403-2/2CN402-35PCN402-35PCN401-35PCN401-35PCN101-4PPower SupplyCN602-9PCN102-9P*1*1*1*1*1:IN 5/5CN701-11PCN601-11PLD704IN 3/5IN 4/5CN407-7PCN407-7PCN407-7PCN406-7PCN406-7PCN407-7PCN406-7PCN701-11PCN106-1PLD706 IN 5/5 PS10 2/2 PS5 2/2 CN102-9Pto PA Achto PA Bch IN 1/5 SW401 -1/4SW402-1/2SW402-2/2S

29、W401 -2/4 -3/4 -4/4CN109-1PCN105-1PYEBLBLYECN108-1PCN107-1PBRCN110-1PBRIC408 1/2IC408 2/2IC406RY401RY402RY403-1/2RY403-2/2 PS10 1/2 PS5 1/2 IN 2/5 INBLOCK DIAGRAM（）PC9500N/PC4800N7AAQ420Q418CN201-3PCN104-2P(A)(B)CN103-2PCN605 -1PLD705LD701SP60221122 -2 +1 +1 -SP603SP601A chB chCN403-3PCN201-3PCN404-

30、3PIC201IC201CN202 -6PCN202-6PCN603-6PCN604-6PRECN608-1PREFAN DRIVEQ115-117CN102-9PCN602-9P*1CN701-11PCN601-11PCN701-11PCN601-11PCN701-11PCN701-11P1-11PCN601-11PCN601-11PLD702LD703D706CN202-6PCN603-6PCN202-6PCN604-6PW4012/43/44/4CN609-2PCN205-2PNFCN205-2PNFCN610-2P+B -B GND+B -B GNDPAPAIN 2/5IN 2/5IN

31、 2/5 PS10 1/2 PS5 1/2 38CA1-8821493PC9500N/PC4800N8IN 4/5IN 3/5PAIN 1/5IN 5/5BBPSPC4800N onlyB chWIRING（基板結線図）PC9500N/PC4800N9IN 2/5BBPA00N onlyA ch38C99-8823966 2PC9500N/PC4800N10DIMENSIONSUnits: mm480884564643802625303703025（寸法図）（単位）PC9500N/PC4800N11DISASSEMBLY PROCEDUREFig.140: Bind Head Screw 3.

32、0X4 MFZN2BL (VR139400)70: Bind Head Screw 4.0X8 MFZN2BL A4.0X8 (VP156800)90: Bind Head Screw 3.0X4 MFZN2BL (VR139400)260: Bonding Tapping Screw-B 4.0X8 MFZN2BL (VR779900)40bPS 1/2IN 4/540a40b260260702606590260I/O Rock1.（所要時間：約2 分）1-12609本外、外。(Fig.1)2.Assy（所要時間：約4 分）2-1外。 (1項参照)2-2220 6 本外、 Ass y 外。(

33、Fig.2)PC9500N (J)仕向70外。 (Fig.1)R310220220220Fig.2220: Bonding Tapping Screw-B 4.0X8 MFZN2BL (VR779900)290: Bind Head Screw 4.0X8 MFZN2BL (VP156800) B小1.Top Cover (Time required: about 2 minutes)1-1Remove the nine (9) screws marked 260. The topcover can then be removed. (Fig. 1)2.Rear Assembly(Time r

34、equired: about 4 minutes)2-1Remove the top cover. (See Procedure 1.)2-2Remove the six (6) screws marked 220. The rearassembly can then be removed. (Fig. 2) With PC9500N of the J specification, remove thescrew marked 70. (Fig.1)（分解手順）小 小小PC9500N/PC4800N12R70R70R50R75R75R60R10R20aR30R20cR40IN 1/5IN 5/

35、5Fig.3R40: Pan Head Screw 2.6X6 MFZN2BL (VC990500)R50: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)R60: Bind Head Tapping Screw-B 3.0X12 MFZN2BL (VQ074600)R70: Bind Head Tapping Screw-B 2.6X8 MFZN2BL (VB096700)R75: Flat Fillister H. Tapping 3.0X8 MFZN2BL (V9568800)6. Assy（所要時間：約4 分）6-1190a3本R190

36、b3本外、 2002本外、 Ass y外。 (Fig.4)6.Front Panel Assembly(Time required: about 4 minutes)6-1Remove the three (3) screws marked 190a fromthe side cover L, three (3) screws marked 190bfrom the side cover R and two (2) screws marked200. The front panel assembly can then beremoved. (Fig. 4)3.IN1/5（所要時間：約5 分）3

37、-1外。 (1項参照)3-2Ass y外。 (2項参照)3-3R3102本外、 外。 (Fig.2)3-4R501本、 R602本、 R704本、 R754本外、IN1/5外。 (Fig.3)4.IN4/5（所要時間：約5 分）4-1外。 (1項参照)4-2Ass y外。 (2項参照)4-340a4本外、IN4/5外。(Fig.1)5.IN5/5（所要時間：約3 分）5-1外。 (1項参照)5-2R402本外、IN5/5外。(Fig.3)3.IN 1/5 Circuit Board (Time required: about 5 minutes)3-1Remove the top cover.

38、 (See Procedure 1.)3-2Remove the rear assembly. (See Procedure 2.)3-3Remove the two (2) screws marked R310 and thenremove the SP terminal cover. (Fig. 2)3-4Remove the one (1) screw marked R50 , two (2)screws marked R60 , four (4) screws marked R70and four (4) screws marked R75. The IN 1/5 circuitboa

39、rd can then be removed. (Fig. 3)4.IN 4/5 Circuit Board (Time required: about 5 minutes)4-1Remove the top cover. (See Procedure 1.)4-2Remove the rear assembly. (See Procedure 2.)4-3Remove the four (4) screws marked 40a. The IN 4/5circuit board can then be removed. (Fig. 1)5.IN 5/5 Circuit Board (Time

40、 required: about 3 minutes)5-1Remove the top cover. (See Procedure 1.)5-2Remove the two (2) screws marked R40. The IN 5/5 circuit board can then be removed. (Fig. 3)小 B 平頭BPC9500N/PC4800N13PS 1/2IN 1/5190bSide Cover R（R）170170190a200Side Cover L（L）Fig.4170: Bonding Tapping Screw-B 4.0X8 MFZN2BL (VR7

41、79900)190: Bonding Tapping Screw-B 4.0X8 MFZN2BL (VR779900)200: Bind Head Screw 3.0X4 MFZN2BL (VR139400)Fig.5F30:Bind Head Screw 4.0X30 MFZN2BL (VT229100)F180: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)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)7-3DCF302本外、 外。左右同方法外。 (Fig.5)8.（所要時間：約8 分）8

42、-1外。 (1項参照)8-2 Ass y外。 (6項参照)8-3DC 外。 (7項参照)8-4F1804本外、 及塗装上 2 所外。 (Fig.5)8-5F1506本外、 外。 (Fig.6)8-6PSW外、 F40 2本外、（PS2/2）外。(Fig.6)8-7PS2/2 外。7.DC Fan (Time required: about 4 minutes)7-1Remove the top cover. (See Procedure 1.)7-2Remove the front panel assembly. (See Procedure 6.)7-3Remove the two (2)

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

44、ve the four (4) screws marked F180 and thenremove the two front covers. (Fig. 5)8-5Remove the six (6) screws marked F150 and thenremove the front panel. (Fig. 6)8-6Remove the Power switch knob and the two (2)screws marked F40. The power switch (PS 2/2circuit board mount) can then be removed. (Fig. 6

45、)8-7Remove the power switch from the PS 2/2 circuitboard.F180F30F30F30F30Front coverFront coverF180（）（塗装上）BB小小 BPC9500N/PC4800N14F150F80F150F60Power Switch knobF40IN 3/5PS 2/2IN 2/5F70F10Attenuation knobHexagonal nut（六角）（PSW）（）Fig.6F40: Bind Head Screw 3.0X6 MFZN2BL (EG330360)F70: Bind Head Tapping

46、Screw-B 3.0X8 MFZN2BL (EP600190)F150: Flat Head Screw 4.0X8 MFZN2BL (VA221200)11.PA（所要時間：約 7分）11-1Ass y外。 (2項参照)11-2外。 (1項参照)11-3170 9本190 3本外、外、 PA外。 A,B同方法外。 (Fig.4)12.PA（所要時間：約 11分）12-1外。 (1項参照)12-2PA 外。 (11 項参照)12-3、FET 止P70 （PC9500N：33 本、PC4800N：25 本）P763本、 P406本外、PA外。 (Fig.7)11.PA Unit (Time r

47、equired: about 7 minutes)11-1Remove the rear assembly. (See Procedure 2.)11-2Remove the top cover. (See Procedure 1.)11-3Remove the nine (9) screws marked 170 and three(3) screws marked 190. The side cover and PA unitcan then be removed. Use the same method for bothA and B channels. (Fig. 4)12.PA Ci

48、rcuit Board(Time required: about 11 minutes)12-1Remove the top cover. (See Procedure 1.)12-2Remove the PA unit. (See Procedure 11.)12-3Remove the screws fixing the pair transistor, FET anddiode marked P70 (33 screws for PC9500N, 25screws for PC4800N), three (3) screws marked P76and six (6) screws ma

49、rked P40. The PA circuit boardcan then be removed. (Fig. 8)9.IN2/5（所要時間：約4 分）9-1外。 (1項参照)9-2 Ass y外。 (6項参照)9-3DC外。 (7項参照)9-4F1804本外、 及塗装上 2所外。 ( Fig.5)9-5F1506本外、 外。 (Fig.6)9-6F70 2 本外、IN2/5 外。 (Fig.6)10.IN3/5（所要時間：約 4 分）10-1外。 (1項参照)10-2 Ass y外。 (6項参照)10-3DC外。 (7項参照)10-4及塗装上2所外。 (9-4.項参照)10-5外。 (9-

50、5.項参照)10-6A/BVR六角外、IN3/5 外。 (Fig.6)9.IN 2/5 Circuit Board(Time required: about 4 minutes)9-1Remove the top cover. (See Procedure 1.)9-2Remove the front panel assembly. (See Procedure 6.)9-3Remove the DC fans. (See Procedure 7.)9-4Remove the four (4) screws marked F180 and thenremove the two front co