Yamaha-PC-4800-N-Service-Manual电路原理图.pdf

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1、PC9500N/PC4800N 1 SERVICE MANUAL PA 011652 PC9500N: 20020925-400000 PC4800N: 20020925-330000 1.361K-3611 Printed in Japan 2002.9 HAMAMATSU, JAPAN CONTENTS SPECIFICATIONS. 3/4 PANEL LAYOUT. 5 BLOCK DIAGRAM. 6 WIRING. 8 DIMENSIONS. 10 DISASSEMBLY PROCEDURE. 11 LSI PIN DESCRIPTION. 16 IC BLOCK DIAGRAM.

2、 17 CIRCUIT BOARDS. 19 INSPECTIONS. 30/37 PARTS LIST OVERALL CIRCUIT DIAGRAMS （ECF：無塩素系漂白）使用。 POWER AMPLIFIERS PC9500N （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/PC4800N 2 WARNING: THIS APPARATUS MUST BE EARTHED IMPORTANT THE WIRES IN THIS

3、 MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE: GREEN-AND-YELLOW : EARTH BLUE : NEUTRAL BROWN : LIVE As 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 whic

4、h is coloured GREEN and YELLOW must be connected 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 whi

5、ch is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED. * This applies only to products distributed by YAMAHA KEMBLE MUSIC (U.K.) LTD. WARNING Components having special characteristics are marked and must be replaced with parts having specification e

6、qual to those originally installed. 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 under- s

7、tood 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 per- sonal injury, destruction of expensive components and failure of the product to perform as specified. For these reasons, we adv

8、ise 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 certifi- cation, recognition of any ap

9、plicable technical capabilities, or establish a principal-agent relationship of any form. The data provided is belived 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.

10、 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 expensive components. Discharge any

11、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 unit. WARNING: CHEMICAL CONTENT N

12、OTICE! 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 entities) to cause cancer and/or bi

13、rth 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 eyes to solder/flux vapor! If yo

14、u come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. 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/PC4800N 3 General Specifications PC9500NPC4800N 120 V (US)/ 240 V (A)230 V (EU)120 V (US)/ 240 V (A)230 V (EU

15、) Power Output Level (Rated Power)8/STEREO1000 W x 21050 W x 2550 W x 2500 W x 2 1 kHz4/STEREO1600 W x 21650 W x 2850 W x 2800 W x 2 THD+N= 1%8/BRIDGE3200 W x 13300 W x 11700 W x 11600 W x 1 8/STEREO925 W x 2950 W x 2475 W x 2450 W x 2 20 Hz20 kHz4/STEREO1400 W x 21500 W x 2725 W x 2700 W x 2 THD+N=

16、 0.1%8/BRIDGE2800 W x 13000 W x 11450 W x 11400 W x 1 1 kHz2/STEREO2300 W x 22300 W x 21200 W x 21200 W x 2 20mS nonclip4/BRIDGE4600 W x 14600 W x 12400 W x 12400 W x 1 Power BandwidthHalf Power10 Hz40 kHz (THD+N= 0.5%) Total Harmonic Distortion (THD + N) 20 Hz20 kHz, Half Power 0.1% Frequency Respo

17、nseRL= 8, Po= 1 W0 dB, 0.5 dB, 1 dB f=20 Hz50 kHz Intermodulation distortion (IMD) 60 Hz:7 kHz, 4:1, Half Power 0.1% Channel SeparationHalf Power, RL= 8, 1 kHz 70 dB Vol. max., input 600 shunt Residual Noise Vol. min.20 Hz20 kHz (DIN AUDIO) 70 dB SN Ratio20 Hz20 kHz (DIN AUDIO)106 dB103 dB Damping F

18、actorRL=8, 1f= 1 kHz800 Sensitivity (Vol. max.) Rated Power into 8+9 dB+6 dB Voltage Gain (Vol. max.)32 dB Input Impedance30 k/Balanced, 15 k/Unbalanced ControlsFront PanelPOWER switch (ON/OFF) Volume (31 position) /ch Rear PanelMODE switch (STEREO/BRIDGE/PARALLEL) HPFswitch (ON/OFF) /ch fc=40 Hz DI

19、P switch (6P) ConnectorsInputXLR-3-31 type/ch Euroblock connector (balance)/ch OutputSPEAKON /ch, 5-way binding posts NETWORKRJ45 POWERAC INLET IndicatorsPOWER/STAND-BYGreen/Orange PROTECTIONRed TEMPRed (heatsink temp 85C) REMOTEGreen Meters10 points LED meter Load protectionPOWER switch ON muting,

20、DC detection, Amp. protectionTemp. detection (heatsink temp 90C), VI limiter (RL 1 ) LimiterComp. : THD 0.5% CoolingDual Variable-speed fan Power RequirementsUS & Canada120 V, 60 Hz Europe230 V, 50/60 Hz Other240 V, 50/60 Hz Power ConsumptionIdling55 W40 W 1/8 output power, 4120 V 750 W 230/240 V 11

21、00 W120 V 450 W 230/240 V 600 W Maximum output, 44500 W2500 W Dimensions (W x H x D)480 x 88 x 456 mm Weight13 kg12.5 kg AccessoriesPower cord, Security cover, Owners Manual, Euroblock connector (2) 0 dB=0.775 Vrms, Half Power=1/2 Power Output Level (Rated Power) For European Model Purchaser/User in

22、formation specified in EN55103-1 and EN55103-2. Inrush Current: 20A (PC9500N) / 25A (PC4800N) Conformed Environment: E1, E2, E3 and E4. SPECIFICATIONS（総合仕様） PC9500N/PC4800N 4 一般仕様 PC9500NPC4800N 出力8 /STEREO1000W 2500W 2 1kHz4 /STEREO1500W 2750W 2 THD N=1%8 /BRIDGE3000W 11500W 1 8 /STEREO900W 2450W 2

23、 20Hz 20kHz4 /STEREO1300W 2650W 2 THD N=0.1%8 /BRIDGE2600W 11300W 1 1kHz2 /STEREO2200W 21100W 2 20mS nonclip4 /BRIDGE4400W 12200W 1 出力帯域幅Half Power10Hz 40kHz（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 Power

24、RL 8 1kHz . max.入力 600 70dB 残留 min.20Hz 20kHz (DIN AUDIO)70dB SN 比20Hz 20kHz (DIN AUDIO)106dB103dB RL=8 、1f 1kHz800 入力感度（ max.）Rated Power8 +9dB+6dB （ max.）32dB 入力30k 型、15k 型 POWER ：ON/OFF ：31 （単位） MODE ：STEREO/BRIDGE/PARALLEL HPF ：ON/OFF（単位）fc 40Hz DIP （6P） INPUTXLR-3-31 （） （単位） OUTPUT（単位）、5 NETWOR

25、KRJ45 POWERAC （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55W40W 1/8 出力、4 950W500W 最大出力、4 4500W2500W 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 O

26、utput Level （Rated Power） PC9500N/PC4800N 5 PANEL LAYOUT In case of PC9500N (J) （PC9500N （J） 場合） 1 2 3 4 5 6 7 8 Front Panel POWER/STAND-BY switch and indicator REMOTE indicator PROTECTION indicator TEMP indicator Level meters Volume knobs Air intakes Security cover 1 2 3 4 5 6 7 8 9 XLR inputs MODE

27、 switch HPF 40 switches SPEAKERS jacks DATA ports AMP ID switch Euroblock connector AC inlet (only PC4800N) GND terminals Rear Panel （） 1 2 3 4 5 6 7 8 9 XLR 入力端子 MODE HPF 40 SPEAKERS端子 DATA AMP ID AC（PC4800N ） GND 端子 1 2 3 4 5 6 7 8 POWER/STAND-BY 、 REMOTE PROTECTION TEMP 吸気口 （） （） PC9500N/PC4800N

28、6 A A IC401 VR401 VR402 A ATT A ATT B ATT B ATT JK401 JK402 INPUT SW801 SW101 JK801 JK802 IC401 1 3 2 5 6 7 6 72 74 91, 92 5760 102 104 54664 94, 99 10, 11 95, 96 93, 98 70, 69 6.4512M Clock 7 175 112P IC801 IC802 CN405-37P CN801-37P CN405-37P CN801-37P CN801-37P CN405-37P CN602-9P JK403 IC402-1/2 I

29、C402-2/2 IC403-1/2 IC403-2/2 CN402-35P CN402-35P CN401-35P CN401-35P CN101-4P Power Supply CN602-9P CN102-9P *1 *1 *1 *1 *1:IN 5/5 CN701-11P CN601-11P LD704 IN 3/5 IN 4/5 CN407-7P CN407-7PCN407-7P CN406-7P CN406-7P CN407-7P CN406-7P CN701-11P CN106-1P LD706 IN 5/5 PS10 2/2 PS5 2/2 CN102-9P to PA Ach

30、 to PA Bch IN 1/5 SW401 -1/4 SW402-1/2 SW402-2/2 SW401 -2/4 -3/4 -4/4 CN109-1P CN105-1P YE BL BL YECN108-1P CN107-1PBR CN110-1PBR IC408 1/2 IC408 2/2 IC406 RY401 RY402 RY403-1/2 RY403-2/2 PS10 1/2 PS5 1/2 IN 2/5 IN BLOCK DIAGRAM（） PC9500N/PC4800N 7 A A Q420 Q418 CN201-3P CN104-2P (A)(B) CN103-2P CN6

31、05 -1P LD705 LD701 SP602 2 1 1 2 2 - 2 + 1 + 1 - SP603 SP601 A ch B ch CN403 -3P CN201-3P CN404 -3P IC201 IC201 CN202 -6P CN202 -6P CN603-6P CN604-6P RE CN608-1P RE FAN DRIVE Q115-117 CN102-9P CN602-9P *1 CN701-11P CN601-11P CN701-11P CN601-11P CN701-11P CN701-11P 1-11P CN601-11P CN601-11P LD702LD70

32、3 D706 CN202-6P CN603-6P CN202-6P CN604-6P W401 2/4 3/4 4/4 CN609-2P CN205-2P NF CN205-2P NF CN610-2P +B -B GND +B -B GND PA PA IN 2/5 IN 2/5 IN 2/5 PS10 1/2 PS5 1/2 38CA1-8821493 PC9500N/PC4800N 8 IN 4/5 IN 3/5 PA IN 1/5 IN 5/5 B B PS PC4800N only B ch WIRING（基板結線図） PC9500N/PC4800N 9 IN 2/5 B B PA

33、00N only A ch 38C99-8823966 2 PC9500N/PC4800N 10 DIMENSIONS Units: mm 480 88 456 46 4 38026 25303703025 （寸法図） （単位） PC9500N/PC4800N 11 DISASSEMBLY PROCEDURE Fig.1 40: Bind Head Screw 3.0X4 MFZN2BL (VR139400) 70: Bind Head Screw 4.0X8 MFZN2BL A4.0X8 (VP156800) 90: Bind Head Screw 3.0X4 MFZN2BL (VR1394

34、00) 260: Bonding Tapping Screw-B 4.0X8 MFZN2BL (VR779900) 40b PS 1/2 IN 4/5 40a 40b 260 260 70 260 65 90 260 I/O Rock 1.（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。 (Fig.2) PC9500N (J)仕向70外。 (Fig.1) R310 220220 220 Fig.2 220: Bonding Tapping Screw-B 4.0X8 MFZ

35、N2BL (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 top cover can then be removed. (Fig. 1) 2.Rear Assembly (Time required: about 4 minutes) 2-1Remove the top cover. (See Procedure 1.) 2-2Remove

36、the six (6) screws marked 220. The rear assembly can then be removed. (Fig. 2) With PC9500N of the J specification, remove the screw marked 70. (Fig.1) （分解手順） 小 小 小 PC9500N/PC4800N 12 R70R70R50R75R75R60R10 R20aR30R20c R40 IN 1/5 IN 5/5 Fig.3 R40: Pan Head Screw 2.6X6 MFZN2BL (VC990500) R50: Bonding

37、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R 190b3本外、 2002本外、 Ass y外。 (Fig.4) 6.Front Panel Assembly (Tim

38、e required: about 4 minutes) 6-1Remove the three (3) screws marked 190a from the side cover L, three (3) screws marked 190b from the side cover R and two (2) screws marked 200. The front panel assembly can then be removed. (Fig. 4) 3.IN1/5（所要時間：約5 分） 3-1外。 (1項参照) 3-2Ass y外。 (2項参照) 3-3R3102本外、 外。 (Fi

39、g.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. (See Procedure 1.) 3-2Remove th

40、e rear assembly. (See Procedure 2.) 3-3Remove the two (2) screws marked R310 and then remove the SP terminal cover. (Fig. 2) 3-4Remove the one (1) screw marked R50 , two (2) screws marked R60 , four (4) screws marked R70 and four (4) screws marked R75. The IN 1/5 circuit board can then be removed. (

41、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 4/5 circuit board can then be removed. (Fig. 1) 5.IN 5/5 Circuit Board (Time required: about 3

42、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B PC9500N/PC4800N 13 PS 1/2 IN 1/5 190b Side Cover R （R） 170 170 190a 200 Side Cover L （L） Fig.4 170: Bonding Tapping Screw-B 4.0X8 MFZN2BL (VR7

43、79900) 190: Bonding Tapping Screw-B 4.0X8 MFZN2BL (VR779900) 200: Bind Head Screw 3.0X4 MFZN2BL (VR139400) Fig.5 F30: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.（

44、所要時間：約8 分） 8-1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

45、6.) 7-3Remove 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 8 minutes) 8-1Remove the top cover. (See Procedure 1.) 8-2Remove the front panel assembly. (See Procedure 6.) 8-3Remove the DC

46、 fans. (See Procedure 7.) 8-4Remove the four (4) screws marked F180 and then remove the two front covers. (Fig. 5) 8-5Remove the six (6) screws marked F150 and then remove the front panel. (Fig. 6) 8-6Remove the Power switch knob and the two (2) screws marked F40. The power switch (PS 2/2 circuit bo

47、ard mount) can then be removed. (Fig. 6) 8-7Remove the power switch from the PS 2/2 circuit board. F180 F30 F30F30 F30Front cover Front cover F180 （） （塗装上） B B 小 小 B PC9500N/PC4800N 14 F150 F80 F150 F60 Power Switch knob F40 IN 3/5 PS 2/2 IN 2/5 F70 F10 Attenuation knob Hexagonal nut （六角） （PSW）（） Fig.6 F40: Bind Head Screw 3.0X6 MFZN2BL (EG330360) F70: Bind Head Tapping 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。 (1