Yamaha-PW8-psu-sm 维修电路原理图.pdf

《Yamaha-PW8-psu-sm 维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Yamaha-PW8-psu-sm 维修电路原理图.pdf（33页珍藏版）》请在收音机爱好者资料库上搜索。

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

2、DIAGRAM（回路図） CONTENTS（目次）PA011911PW8POWER SUPPLY200807 RadioFans.CN 收音机爱 好者资料库PW82 WARNINGComponents having special characteristics are marked and must be replaced with parts having specifi cation equal to those originally installed.IMPORTANT NOTICEThis manual has been provided for the use of author

3、ized 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 an

4、d 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

5、 or 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 ga

8、uge 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.DO N

9、OT 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 components l

10、ocated 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 KINGDOMConnecting the Plug and CordWARNING: THIS APPARATUS MUST BE EARTHEDIMPORTANT. The wires in this mains lead are coloured in accordance with the followi

11、ng 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 inyour plug proceed as follows:The wire which is coloured GREEN-and-YELLOW must be connected to the ter

12、minal 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 to the termina

13、l which is marked with the letter L or coloured RED. This applies only to products distributed by Yamaha Music U.K. Ltd. (3 wires)RadioFans.CN 收音机爱 好者资料库3PW8 SPECIFICATIONS（総合仕様）General SpecificationsPower Connector Pin DiagramPower Supply Cable Pin AssignmentsSecondaryVoltage+15VGreen LED: On (+15

14、V), 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), 200 W

15、(IM8-24)DimensionsHeight: 100.5 mm, Depth: 412 mm, Width: 480 mmNetWeight11 kgDC OUTPUTDC PARALLEL INPUT1238910546732110986754No.Function1Power supply remote2+15 V315 V GND4+48 V GND5-15 V6+12 V7+12 V GND/power supply remote8Power supply remote9+48 V10FRAME GND DIMENSIONAL DIAGRAM（寸法図）8812.5392.564.

16、5250374.5404.55.576.2300410304381176.23244.7H: 100.5W: 480D: 412Units: mmPW84 PANEL LAYOUT（）q POWER Switchw Operation Monitor (+48V, +12V, +15V, -15V)?Front Panel（）?Rear Panel（）q DC PARALLEL INPUT Connectorw DC OUTPUT Connectore AC IN Connectorr Ground Screw Terminalq POWER w (+48V、+12V、+15V、-15V)q

17、DC PARALLEL INPUT 端子w DC OUTPUT 端子e AC IN 端子r 用5PW8 CIRCUIT BOARD LAYOUT（）AC1DC1DC2FRONT PANEL 1（1） DC ASSEMBLY (L)（DC Ass y （L） ） DC ASSEMBLY (R)（DC Ass y （R） ）AC2AC3PW86 DISASSEMBLY PROCEDURE（分解手順）Fig. 1（図1）AC1AC3AC2TOP COVER（）HEXAGONAL NUT A（六角A）SHIELD BOARD（板）HEXAGONAL NUT B（六角B）470 x 3470 x 540

18、0 x 2470 x 3300 x 6160A x 4350 x 4470470MAIN 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）WASHER（）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

19、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 INPUT)（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）

20、 ）160B x 4240 x 680 x 240 x 240 x 2140 x 3120 x 2140 x 35050370 x 4380A380B380C400350370AThe parts marked “” are power transformer components.（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: BI

21、ND HEAD TAPPING SCREW-S（）3.0X5 MFZN2W3 (WE98020R)140: BIND HEAD TAPPING SCREW-B（）4.0X8 MFZN2B3 (WE962000)160: BIND HEAD TAPPING SCREW-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 SCRE

22、W-B（）3.0X10 MFZN2B3 (WE972200)370: BIND HEAD TAPPING SCREW-B（）3.0X10 MFZN2B3 (WE972200)380: BIND HEAD TAPPING SCREW-S（）4.0X6 MFZN2B3 (WE974300)400: BIND HEAD TAPPING SCREW-B（）3.0X10 MFZN2B3 (WE972200)470: BIND HEAD TAPPING SCREW-B（）4.0X8 MFZN2B3 (WE962000)7PW81. Top Cover (Time required: About 2 min

23、utes) Remove the eleven (11) screws marked 470. The top cover can then be removed. (Fig. 1)2. Power Transformer (Time required: 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 hexagon

24、al nut B and remove the hexagon bolt from the bottom side of the main chassis assembly. The parts marked A can then be removed. (Fig. 1)3. DC Assembly3-1 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

25、 assembly (R) can then be removed. (Fig. 1)3-2-2 Remove the three (3) screws marked R70A. The transistor fi xing plate 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

26、 and the screw marked R70C. The DC1 circuit board can then be removed. (Photo 2, Photo 3) * The diode stack and transistor of the DC1 circuit board are in close contact with the insulation sheet. (Photo 4, Photo 5)DC1TRANSISTOR FIXING PLATE A（TR 押金具 A） DC ASSEMBLY (R) （DC ASS Y （R） ）R70AR70A: BIND H

27、EAD SCREW（小） 3.0X10 MFZN2W3 (WE95290R)DC1TRANSISTOR FIXING PLATE B（TR 押金具 B） DC ASSEMBLY (R) （DC ASS Y （R） ）R70BR70CR70: BIND HEAD SCREW（小） 3.0X10 MFZN2W3 (WE95290R)DC1 DC ASSEMBLY (R) （DC ASS Y （R） ）R40R40R40: 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

28、 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

29、）Photo 2（写真2）Photo 3（写真3）PW88DC1 DC ASSEMBLY (R) （DC ASS Y （R） ）INSULATION SHEET（放熱）DIODE STACK and TRANSISTOR（ ） DC ASSEMBLY (R) （DC ASS Y （R） ）DC1INSULATION SHEET（放熱）DIODE STACK and TRANSISTOR（ ）DC2TRANSISTOR FIXING PLATE C（TR 押金具 C） DC ASSEMBLY (L) （DC ASS Y （L） ）L70L70: BIND HEAD SCREW（小） 3.0X10

30、 MFZN2W3 (WE95290R)DC2 DC ASSEMBLY (L) （DC ASS Y （L） ）L40L40L40: 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。

31、（写真 7） DC2 放熱密着。 （写真 8）Photo 4（写真4）Photo 5（写真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 p

32、late C can then be removed. (Photo 6)3-3-3 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)9PW84. AC1 （所要時間：約 3 分）4-1 外。(1 項参照 )4-2 300 6 本外、A

33、C1 外。（図 1）5. PS 束線5-1 外。(1 項参照 )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）6-3 400

34、2本外、 AC束線外。（図1）7. 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

35、) 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 Assembly5-1 Remove the top cover. (See procedure 1.)5-2 DC PARALLEL INPUT (Time required:

36、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 marked 380B. Th

37、e 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 earth cable C

38、 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 can then be removed

39、. (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 Remove the six (6) screws ma

40、rked 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 marked 140. The front panel 1 c

41、an 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.PW810 IC BLOCK DIAGRAM（IC 図）PC4570C (XC520A00)DC1: IC101DC2: IC201, IC202 Dual Operational Amplifier1234-V8

42、765Output A+VNon-InvertingInput A-DC Voltage Supply+DC VoltageSupplyOutput BInvertingInput BNon-InvertingInput BInvertingInput A+-+- CIRCUIT BOARDS（基板図）AC1 Circuit Board (X8678C0) .11AC2 Circuit Board (X8678C0) . 12AC3 Circuit Board (X8678C0) . 12DC1 Circuit Board (X8679D0) . 13DC2 Circuit Board (X8

43、679D0) . 14Note: See parts list for details of circuit board component parts.注 : 部品詳細参照。11PW8to AC Inlet (AC WIRING ASSEMBLY) （AC (AC束線)）to AC3-CN301to POWER TRANSFORMER (Primary) （電源 (一次側)）to DC1-CN103, DC2-CN203toPS WIRING ASSEMBLY (OUTPUT)（PS束線 (OUTPUT)）toPS WIRING ASSEMBLY (PARALLEL INPUT)（PS束線

44、(PARALLEL INPUT) ） AC1 Circuit BoardComponent side（部品側）2NA-WJ98670PW812to DC2-CN202to AC1-CN102POWER ON/OFFAC2, AC3: 2NA-WJ98670 AC2 Circuit BoardComponent side（部品側） AC3 Circuit BoardComponent side（部品側）13PW8to DC2-CN204toPOWER TRANSFORMER (Secondary) （電源 (二次側)）to AC1-CN104to FAN (R) （DC (R)）not inst

45、allednot installedScale: 80/100 DC1 Circuit Board2NA-WJ98680Component side（部品側）PW814to DC1-CN101toPOWER TRANSFORMER (Secondary) （電源 (二次側)）to AC1-CN104to FAN (L) （DC (L)）to AC2-CN201not installedScale: 80/100 DC2 Circuit BoardComponent side（部品側）2NA-WJ98680 PARTS LIST WARNINGComponents having special

46、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 intercha

47、ngeable. The second letter of the shaded ( ) part number is O, not zero. The second letter of the shaded ( ) part number is I, not one. 部品価格、変更。 QTY 欄記数字、各当使用個数。 PART NO. “-”部品、用部品準備。 REMARKS 欄 部品、併用部品。 網掛付 PART NO. 2 番目文字、 。 網掛付 PART NO. 2 番目文字、 。Notes : DESTINATION ABBREVIATIONSA : Australian mode

48、lB : British modelC : Canadian modelD : German modelE : European modelF : French modelH : North European modelI : Indonesian modelJ : Japanese modelK : Korean modelM : South African modelO : Chinese modelQ : South-east Asia modelT : Taiwan modelU : U.S.A. modelV : General export model (110V)W: Gener

49、al export model (220V)N,X: General export modelY : Export model 印部品、安全維持重要部品。交換場合、安全必指定部品使用。 CONTENTS（目次）OVERALL ASSEMBLY（総組立） . 2DC ASSEMBLY L（DC Ass y L） . 6DC ASSEMBLY R（DC Ass y R） . 7ELECTRICAL PARTS（電気部品） . 812POWER SUPPLYPW8PW82 OVERALL ASSEMBLY（総組立）a10 x4160 x6300310440320330330330310 x32701

50、50b150ax240 x4410 x4420 x280 x6240 x2120 x3140 x314090230250110 x240 x4160 x4350 x3470 x4370 x2340360460450 x23030505050506070260280290260 x3270320380 x2400380390 x3470 x5470DC ASSEMBLY R（DC Ass y R）(See page. 7)DC ASSEMBLY L（DC Ass y L）(See page. 6)PW83110130180180150a150b60130430702901003201003203