Yamaha-PW-8-Service-Manual电路原理图.pdf

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1、SERVICE MANUAL HAMAMATSU, JAPAN Copyright (c) Yamaha Corporation. All rights reserved. PDF & 08.07 SPECIFICATIONS（総合仕様） .3 DIMENSIONAL DIAGRAM（寸法図） .3 PANEL LAYOUT（） .4 CIRCUIT BOARD LAYOUT（） .5 DISASSEMBLY PROCEDURE（分解手順） .6 IC BLOCK DIAGRAM（IC 図） .10 CIRCUIT BOARDS（基板図） .10 PARTS LIST BLOCK DIAGRA

2、M（） CIRCUIT DIAGRAM（回路図） CONTENTS（目次） PA011911 PW8 POWER SUPPLY 200807 PW8 2 WARNING Components having special characteristics are marked and must be replaced with parts having specifi cation equal to those originally installed. IMPORTANT NOTICE This manual has been provided for the use of authorize

3、d 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 have therefore not been restated. WARNING : Failure to follow appropriate service and

4、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 owners that all service required should be performed by an authorized Yamaha Retailer o

5、r the appointed service representative. IMPORTANT : This presentation or sale of this manual to any individual or firm does not constitute authorization certification, recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form. The data provided is

6、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. Modifications are, therefore, inevitable and changes in specification are subject to change without notice or

7、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 have accumulated by grounding yourself to the ground bus in the unit (heavy g

8、auge 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: This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive harm.

9、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 you come in contact with solder or compon

10、ents located inside the enclosure of this product, wash your hands before handling food. 印部品、安全維持重要部品。交換場合、安全必指定部品使用。 IMPORTANT NOTICE FOR THE UNITED KINGDOM Connecting the Plug and Cord WARNING: THIS APPARATUS MUST BE EARTHED IMPORTANT. The wires in this mains lead are coloured in accordance with t

11、he 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 which is coloured GREEN-and-YELLOW must be connect

12、ed to the terminal in the plug which is marked by the letter E or by the safety earth symbol or colored GREEN or 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

13、 to the terminal which is marked with the letter L or coloured RED. This applies only to products distributed by Yamaha Music U.K. Ltd. (3 wires) 3 PW8 SPECIFICATIONS（総合仕様） General Specifi cations Power Connector Pin DiagramPower Supply Cable Pin Assignments SecondaryVoltage +15VGreen LED: On (+15 V

14、), Off (less than +10 V or more than +21 V) -15VGreen LED: On (-15 V), Off (less than -21 V or more than -10 V) +12VGreen LED: On (+12 V), Off (less than +7.6 V or more than +18 V) +48V (Phantom Voltage) Green LED: On (+48 V), Off (less than +32 V) Power Consumption265 W (IM8-40), 230 W (IM8-32), 20

15、0 W (IM8-24) DimensionsHeight: 100.5 mm, Depth: 412 mm, Width: 480 mm NetWeight11 kg DC OUTPUT DC PARALLEL INPUT 123 8910 5467 321 1098 6754 No.Function 1Power supply remote 2+15 V 315 V GND 4+48 V GND 5-15 V 6+12 V 7+12 V GND/power supply remote 8Power supply remote 9+48 V 10FRAME GND DIMENSIONAL D

16、IAGRAM（寸法図） 8812.5 392.5 64.5250 374.5 404.5 5.5 76.2 300 410 30 438 11 76.2 32 44.7 H: 100.5 W: 480 D: 412 Units: mm PW8 4 PANEL LAYOUT（） q POWER Switch w Operation Monitor (+48V, +12V, +15V, -15V) ? Front Panel（） ? ? Rear Panel（） q DC PARALLEL INPUT Connector w DC OUTPUT Connector e AC IN Connecto

17、r r Ground Screw Terminal q POWER w (+48V、+12V、+15V、-15V) q DC PARALLEL INPUT 端子 w DC OUTPUT 端子 e AC IN 端子 r 用 5 PW8 CIRCUIT BOARD LAYOUT（） AC1 DC1DC2 FRONT PANEL 1（1） DC ASSEMBLY (L) （DC Ass y （L） ） DC ASSEMBLY (R) （DC Ass y （R） ） AC2AC3 PW8 6 DISASSEMBLY PROCEDURE（分解手順） Fig. 1（図1） AC1 AC3 AC2 TOP

18、COVER （） HEXAGONAL NUT A （六角A） SHIELD BOARD （板） HEXAGONAL NUT B （六角B） 470 x 3 470 x 5 400 x 2 470 x 3 300 x 6 160A x 4 350 x 4 470 470 MAIN CHASSIS ASSEMBLY （ASS Y） FRONT PANEL 2 （2） FRONT PANEL 1 （1） POWER SWITCH KNOB （PSW） HEXAGON HEAD BOLT （六角） PLATE A （A） RUBBER L （L） RUBBER S （S） PLATE B （B） WA

19、SHER （） DC ASSEMBLY (L) （DC ASS Y （L） ） FAN (L) （DC （L） ） DC ASSEMBLY (R) （DC ASS Y （R） ） FAN (R) （DC （R） ） EARTH CABLE C （線C） EARTH CABLE B （線B） EARTH CABLE A （線A） PS WIRING ASSEMBLY(OUTPUT) （PS 束線 （OUTPUT） ） AC WIRING ASSEMBLY （AC 束線） AC WIRING ASSEMBLY （AC 束線） PS WIRING ASSEMBLY (DC PARALLEL INPU

20、T) （PS 束線 （DC PARALLEL INPUT） ） PS WIRING ASSEMBLY(OUTPUT) （PS 束線 （OUTPUT） ） PS WIRING ASSEMBLY (DC PARALLEL INPUT) （PS 束線 （DC PARALLEL INPUT） ） 160B x 4 240 x 6 80 x 2 40 x 2 40 x 2 140 x 3 120 x 2 140 x 3 50 50 370 x 4 380A 380B 380C 400350370 A The parts marked “” are power transformer components

21、. （電源構成部品。 ） 40: BIND HEAD SCREW（小）4.0X16 MFZN2W3 SP (WE98400R) 50: HEXAGONAL NUT（角）M4 #1 (WG169200) 80: BIND HEAD TAPPING SCREW-S（）3.0X5 MFZN2W3 (WE98020R) 120: BIND HEAD TAPPING SCREW-S（）3.0X5 MFZN2W3 (WE98020R) 140: BIND HEAD TAPPING SCREW-B（）4.0X8 MFZN2B3 (WE962000) 160: BIND HEAD TAPPING SCREW-

22、B（）4.0X8 MFZN2B3 (WE962000) 240: BIND HEAD TAPPING SCREW-S（）3.0X8 MFZN2B3 (WF25750R) 300: BIND HEAD TAPPING SCREW-S（）3.0X5 MFZN2W3 (WE98020R) 350: BIND HEAD TAPPING SCREW-B（）3.0X10 MFZN2B3 (WE972200) 370: BIND HEAD TAPPING SCREW-B（）3.0X10 MFZN2B3 (WE972200) 380: BIND HEAD TAPPING SCREW-S（）4.0X6 MFZN

23、2B3 (WE974300) 400: BIND HEAD TAPPING SCREW-B（）3.0X10 MFZN2B3 (WE972200) 470: BIND HEAD TAPPING SCREW-B（）4.0X8 MFZN2B3 (WE962000) 7 PW8 1. Top Cover (Time required: About 2 minutes) Remove the eleven (11) screws marked 470. The top cover can then be removed. (Fig. 1) 2. Power Transformer (Time requi

24、red: About 3 minutes) 2-1 Remove the top cover. (See procedure 1.) 2-2 Remove the hexagonal nut A. The shield board and plate A can then be removed. (Fig. 1) 2-3 Remove the hexagonal nut B and remove the hexagon bolt from the bottom side of the main chassis assembly. The parts marked A can then be r

25、emoved. (Fig. 1) 3. DC Assembly 3-1 Remove the top cover. (See procedure 1.) 3-2 DC1 Circuit Board (Time required: About 5 minutes) 3-2-1 Remove the four (4) screws marked 160A. The DC assembly (R) can then be removed. (Fig. 1) 3-2-2 Remove the three (3) screws marked R70A. The transistor fi xing pl

26、ate A can then be removed. (Photo 1) 3-2-3 Remove the four (4) screws marked R70B. The transistor fi xing plate B can then be removed. (Photo 2) 3-2-4 Remove the six (6) screws marked R40 and the screw marked R70C. The DC1 circuit board can then be removed. (Photo 2, Photo 3) * The diode stack and t

27、ransistor of the DC1 circuit board are in close contact with the insulation sheet. (Photo 4, Photo 5) DC1 TRANSISTOR FIXING PLATE A （TR 押金具 A） DC ASSEMBLY (R) （DC ASS Y （R） ） R70A R70A: BIND HEAD SCREW（小） 3.0X10 MFZN2W3 (WE95290R) DC1 TRANSISTOR FIXING PLATE B （TR 押金具 B） DC ASSEMBLY (R) （DC ASS Y （R

28、） ） R70BR70C R70: BIND HEAD SCREW（小） 3.0X10 MFZN2W3 (WE95290R) DC1 DC ASSEMBLY (R) （DC ASS Y （R） ） R40 R40 R40: BIND HEAD SCREW（小） 3.0X6 MFZN2W3 (WE774000) 1. （所要時間：約 2 分） 470 11 本外、外 。 （図 1） 2. 電源（所要時間：約 3 分） 2-1 外。(1 項参照 ) 2-2 六角 A 外、板 A 外。 （図 1） 2-3 六角 B 、 Assy 底面側 六角外、図 1 A 部分外 。 （図 1） 3. DC 電源

29、3-1 外。(1 項参照 ) 3-2 DC1 （所要時間：約 5 分） 3-2-1 160A 4 本外、 DC Assy R 外。 （図 1） 3-2-2 R70A 3 本外、TR 押金具 A 外 。 （写真 1） 3-2-3 R70B 4 本外、TR 押金具 B 外 。 （写真 2） 3-2-4 R40 6 本 R70C 1 本外、 DC1 外。 （写真 2、写真 3） DC1 放熱密着。 （写真 4、写真 5） Photo 1（写真1）Photo 2（写真2） Photo 3（写真3） PW8 8 DC1 DC ASSEMBLY (R) （DC ASS Y （R） ） INSULATION

30、 SHEET （放熱） DIODE STACK and TRANSISTOR （ ） DC ASSEMBLY (R) （DC ASS Y （R） ） DC1 INSULATION SHEET （放熱） DIODE STACK and TRANSISTOR （ ） DC2 TRANSISTOR FIXING PLATE C （TR 押金具 C） DC ASSEMBLY (L) （DC ASS Y （L） ） L70 L70: BIND HEAD SCREW（小） 3.0X10 MFZN2W3 (WE95290R) DC2 DC ASSEMBLY (L) （DC ASS Y （L） ） L40 L

31、40 L40: BIND HEAD SCREW（小） 3.0X6 MFZN2W3 (WE774000) DC2 DC ASSEMBLY (L) （DC ASS Y （L） ） INSULATION SHEET （放熱） DIODE STACK and TRANSISTOR （ ） 3-3 DC2 （所要時間：約 5 分） 3-3-1 160B 4 本外、 DC Assy L 外。 （図 1） 3-3-2 L70 5 本外、TR 押金具 C 外 。 （写真 6） 3-3-3 L40 6 本外、DC2 外。 （写真 7） DC2 放熱密着。 （写真 8） Photo 4（写真4）Photo 5（写

32、真5） Photo 6（写真6）Photo7（写真7） Photo 8（写真8） 3-3 DC2 Circuit Board (Time required: About 5 minutes) 3-3-1 Remove the four (4) screws marked 160B. The DC assembly (L) can then be removed. (Fig. 1) 3-3-2 Remove the five (5) screws marked L70. The transistor fi xing plate C can then be removed. (Photo 6) 3

33、-3-3 Remove the six (6) screws marked L40. The DC2 circuit board can then be removed. (Photo 7) * The diode stack and transistor of the DC2 circuit board are in close contact with the insulation sheet. (Photo 8) 9 PW8 4. AC1 （所要時間：約 3 分） 4-1 外。(1 項参照 ) 4-2 300 6 本外、AC1 外。 （図 1） 5. PS 束線 5-1 外。(1 項参照

34、 ) 5-2 DC PARALLEL INPUT（所要時間：約 3 分） 5-2-1 380A 1 本外、 線 A 外。 （図 1） 5-2-2 350 4 本外、DC 束線（DC PARAL- LEL INPUT）外。 （図 1） 5-3 DC OUTPUT（所要時間：約 3 分） 5-3-1 380B 1 本外、 線 B 外。 （図 1） 5-3-2 370 4 本外、DC 束線（OUTPUT） 外。 （図 1） 6. AC 束線（所要時間：約 3 分） 6-1 外。(1 項参照 ) 6-2 380C 1 本外、 線 C 外。 （図 1） 6-3 4002本外、 AC束線外。（図1） 7.

35、 AC3 （所要時間：約 4 分） 7-1 外。(1 項参照 ) 7-2 240 6 本外、 2 外 。 （図 1） 7-3 PSW AC3 外。 （図 1） 7-4 80 2 本外、AC3 外。 （図 1） 8. AC2 （所要時間：約 4 分） 8-1 外。(1 項参照 ) 8-2 140 6 本外、 1 外 。 （図 1） 8-3 120 2 本外、AC2 外。 （図 1） 9. DC （LR）（所要時間：約 5 分） 9-1 外。(1 項参照 ) 9-2 140 6 本外、 1 外 。 （図 1） 9-3 40 2 本 50 六角 2 個外、 DC (L) 外。 （図 1） DC (R

36、) 同手順外。 4. AC1 Circuit Board (Time required: About 3 minutes) 4-1 Remove the top cover. (See procedure 1.) 4-2 Remove the six (6) screws marked 300. The AC1 circuit board can then be removed. (Fig. 1) 5. PS Wiring Assembly 5-1 Remove the top cover. (See procedure 1.) 5-2 DC PARALLEL INPUT (Time requ

37、ired: About 3 minutes) 5-2-1 Remove the screw marked 380A. The earth cable A can then be removed. (Fig. 1) 5-2-2 Remove the four (4) screws marked 350. The DC wiring assembly (DC PARALLEL INPUT) can then be removed. (Fig. 1) 5-3 DC OUTPUT (Time required: About 3 minutes) 5-3-1 Remove the screw marke

38、d 380B. The earth cable B can then be removed. (Fig. 1) 5-3-2 Remove the four (4) screws marked 370. The DC wiring assembly (OUTPUT) can then be removed. (Fig. 1) 6. AC Wiring Assembly (Time required: About 3 minutes) 6-1 Remove the top cover. (See procedure 1.) 6-2 Remove the screw marked 380C. The

39、 earth cable C can then be removed. (Fig. 1) 6-3 Remove the two (2) screws marked 400. The AC wiring assembly can then be removed. (Fig. 1) 7. AC3 Circuit Board (Time required: About 4 minutes) 7-1 Remove the top cover. (See procedure 1.) 7-2 Remove the six (6) screws marked 240. The front panel 2 c

40、an then be removed. (Fig. 1) 7-3 Remove the power switch knob from the AC3 circuit board. (Fig. 1) 7-4 Remove the two (2) screws marked 80. The AC3 circuit board can then be removed. (Fig. 1) 8. AC2 Circuit Board (Time required: About 4 minutes) 8-1 Remove the top cover. (See procedure 1.) 8-2 Remov

41、e the six (6) screws marked 140. The front panel 1 can then be removed. (Fig. 1) 8-3 Remove the two (2) screws marked 120. The AC2 circuit board can then be removed. (Fig. 1) 9. Fan (L,R) (Time required: About 5 minutes) 9-1 Remove the top cover. (See procedure 1.) 9-2 Remove the six (6) screws mark

42、ed 140. The front panel 1 can then be removed. (Fig. 1) 9-3 Remove the two (2) screws marked 40 and two (2) hexagonal nuts marked 50. The fan (L) can then be removed. (Fig. 1) * The fan (R) can be removed in the same way. PW8 10 IC BLOCK DIAGRAM（IC 図） PC4570C (XC520A00) DC1: IC101 DC2: IC201, IC202

43、Dual Operational Amplifier 1 2 3 4-V 8 7 6 5 Output A+V Non-Inverting Input A -DC Voltage Supply +DC Voltage Supply Output B Inverting Input B Non-Inverting Input B Inverting Input A+- +- CIRCUIT BOARDS（基板図） AC1 Circuit Board (X8678C0) .11 AC2 Circuit Board (X8678C0) . 12 AC3 Circuit Board (X8678C0)

44、 . 12 DC1 Circuit Board (X8679D0) . 13 DC2 Circuit Board (X8679D0) . 14 Note: See parts list for details of circuit board component parts. 注 : 部品詳細参照。 11 PW8 to AC Inlet (AC WIRING ASSEMBLY) （AC ( AC束線 )） to AC3-CN301 to POWER TRANSFORMER (Primary) （電源 ( 一次側 )） to DC1-CN103, DC2-CN203 toPS WIRING AS

45、SEMBLY (OUTPUT) （PS束線 (OUTPUT)） toPS WIRING ASSEMBLY (PARALLEL INPUT) （PS束線 (PARALLEL INPUT) ） AC1 Circuit Board Component side （部品側） 2NA-WJ98670 PW8 12 to DC2-CN202 to AC1-CN102 POWER ON/OFF AC2, AC3: 2NA-WJ98670 AC2 Circuit Board Component side（部品側） AC3 Circuit Board Component side（部品側） 13 PW8 to

46、DC2-CN204 toPOWER TRANSFORMER (Secondary) （電源 (二次側)） to AC1-CN104 to FAN (R) （DC (R)） not installed not installed Scale: 80/100 DC1 Circuit Board 2NA-WJ98680Component side（部品側） PW8 14 to DC1-CN101 toPOWER TRANSFORMER (Secondary) （電源 (二次側)） to AC1-CN104 to FAN (L) （DC (L)） to AC2-CN201 not installed

47、Scale: 80/100 DC2 Circuit Board Component side（部品側） 2NA-WJ98680 PARTS LIST WARNING Components having special characteristics are marked and must be replaced with parts having specifi cation equal to those originally installed. The numbers “QTY” show quantities for each unit. The parts with “-” in “PART NO.” are not available as spare parts. This mark “ ” in the REMARKS column means these parts are interchangeable. The second letter of the shaded ( ) part number is O, not zero. The second letter of the shaded ( ) part