Yamaha Pw5000 User manual

PW5000

1

SERVICE MANUAL

PA 011697

HAMAMATSU, JAPAN

POWER SUPPLY

CONTENTS

SPECIFICATIONS ................................................... 3

PANEL LAYOUT .................................... 4

DIMENSIONS ............................................................ 5

CIRCUIT BOARD LAYOUT ................. 6

DISASSEMBLY PROCEDURE .............................. 7

IC BLOCK DIAGRAM .................................. 12

CIRCUIT BOARDS ....................................... 13

INSPECTIONS .......................................................19/22

PARTS LIST

POWER SUPPLY UNIT REPAIR MANUAL

BLOCK & CONNECTOR CIRCUIT DIAGRAM

CIRCUIT DIAGRAM

PW5000: 200307-480000

（目次）

（

総合仕様

）

（パネルレイアウト）

（寸法図）（ユニットレイアウト）

（分解手順）

（ICブロック図）

（シート基板図）

（検査）

（電源ユニット修理マニュアル）

（ブロック＆コネクター回路図）

（回路図）

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PW5000

2

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-

stood 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 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 certifi-

cation, recognition of any applicable 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. 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 distributor’s 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 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 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 entities) 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

eyes 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

Components having special characteristics are marked and must be replaced with parts having specification equal to those

originally installed.

IMPORTANT NOTICE FORTHE 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 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 which 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 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 termi-

nal which is marked with the letter L or coloured RED.

• This applies only to products distributed byYamaha-Kemble Music (U.K.) Ltd. (3 wires)

印の商品は、安全を維持するために重要な部品です。交換する場合は、安全のために必ず指定の部品をご使用ください。

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PW5000

3

SPECIFICATIONS

General Speciﬁcations

Power Supply U.S./Canada: 120 V, 60 Hz

Australia: 240 V, 50 Hz

Other: 230 V, 50 Hz

Power Consumption U.S./Canada: 1100 W, 1250 VA

Other: 1100W

Dimensions (W x H x D) 480 mm x 186 mm x 459 mm

Weight 34 kg

Cooling Fan Speed Settings HIGH (continuous operation at max.),

AUTO (3-speed automatic)

一般仕様

電源 100V,50/60Hz

消費電力 1100W

外形寸法（WxHxD） 480mm×186mm×459mm

質量 34kg

冷却ファン速度 HIGH（常時最高速度）,AUTO（3段階で変速）

Power Connector Pin Diagram (DC OUTPUT)

* DC OUTPUT connector as seen from the rear panel.

DC PARALLEL INPUT pin assignments are ﬂipped

horizontally.

Power Supply Cable Pin Assignments

123

4567

8

9101112

131415161718

1920

24

25

27

26

212223

No. Function No. Function

1 -16V 15 +16V

2 -16V 16 ±16V GND

3 FRAME GND 17 +12V GND

4 -16V 18 +12V GND

5 -16V 19 +48V

6±16V GND 20 PW CAUTION

7 +12V GND 21 ±16V GND

8 REMOTE 22 +12V

9 +16V 23 +12V

10 +16V 24 +48V GND

11 ±16V GND 25 +12V

12 +12V GND 26 +12V

13 REMOTE 27 +12V

14 +16V

（DCOUTPUTコネクターをリアパネルから見た図です。

DCPARALLELINPUTコネクターは、ピン配列が左右

反対になります。）

（電源コネクターの形状（DCOUTPUT）） （電源ケーブルのピン配列）

（総合仕様）

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PW5000

4

PANEL LAYOUT

q[POWER ON/OFF] Switch

wOPERATION MONITOR

e[HIGH] Indicator

r[STOP] Indicator

t[THERMAL] Indicator

yLINE VOLTAGE Display

u[FAN SPEED] Switch

Front Panel（フロントパネル）

NORMAL

CAUTION

+16 -16 +12 +48

HIGH

STOP THERMAL

POWER

ON OFF

OPERATION MONITOR FAN LINE VOLTAGE

FAN SPEED

AUTO HIGH

POWER SUPPLY

Rear Panel（リアパネル）

13.5A

14.0A

1.0A

5000

9,10,14,15

1,2,4,5

22,23,25,26,27

19

（パネルレイアウト）

（[POWERON/OFF]スイッチ）

（OPERATIONMONITOR）

（[HIGH]インジケーター）

（[STOP]インジケーター）

（[THERMAL]インジケーター）

（LINEVOLTAGE）

（[FANSPEED]スイッチ）

i[DC PARALLEL INPUT] Connector

o[DC OUTPUT] Connector

!0 EARTH ScrewTerminal

（[DCPARALLELINPUT]コネクター）

（[DCOUTPUT]コネクター）

（アース用ネジ）

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PW5000

5

DIMENSIONS

Units: mm

50

168434

459

24557

345

480

186

176

391

（寸法図）

（単位）

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PW5000

6

AC 1/3

DC

Power supply unit

（電源ユニット） DC unit

（DCユニット）



AC 3/3

PN 1/2

AC 2/3

PN 2/2

PN 1/2

PN 2/2

CIRCUIT BOARD LAYOUT

（ユニットレイアウト）

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7

PW5000

DISASSEMBLY PROCEDURE

1. トップカバー（所要時間：約 2 分）

1-1 [270A]のネジ 11 本を外し、トップカバーを外しま

す。（図 1）

[270A]

[120]

[120] [120]

[130] [130]

[270A]

[200A]

[200C] [200C] [200C]

[310]

[200B]

[170]

[180]

[170] [150] [150]

[150]

[270A]

（トップカバー）

（マウントサポートパネル）

Frontpanelassembly

（フロントパネルAss'y）

Powerswitchknob（PSWノブ）

Rearassembly（リアAss'y）

Mountsupportpanel

（サイドパネルL）

SidepanelL

（サイドパネルR）

SidepanelR

（マウントサポートパネル）

Mountsupportpanel

Topcover

[120]: Flat Head Tapping Screw-B 4.0X10 MFZN2BL (VP063700)

[130]: Bind Head Tapping Screw-B 4.0X8 MFZN2BL (EG340190)

[150]: Bind Head Tapping Screw-B 4.0X8 MFZN2BL (EG340190)

[170]: Bind Head Tapping Screw-B 4.0X8 MFZN2BL (EG340190)

[180]: Bind Head Screw 4.0X6 MFZN2BL (EG340340)

[200]: Bind Head Tapping Screw-B 4.0X8 MFZN2BL (EG340190)

[270A]: Bind Head Screw 4.0X6 MFZN2BL (EG340340)

[310]: Bind Head Screw A4.0X8 MFZN2BL (VP156800)

Fig. 1

1. Top Cover

(Time required: About 2 minutes)

1-1 Remove the eleven (11) screws marked [270A].The

top cover can then be removed. (Fig.1)

（分解手順）

（＋皿Bタイト）

（＋バインドBタイト）

（＋バインド小ネジ）

（＋バインドBタイト）

（＋バインド小ネジ）

(図1)

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PW5000

8

2. フロントパネル Assy（所要時間：約 2 分）

2-1 [120]のネジ 6 本と[130]のネジ 6 本を外し、フロン

トパネル Assy を外します。（図 1）

3. PN1/2、PN2/2シート（所要時間：各約3分）

3-1 フロントパネル Assy を外します。（2項参照）

3-2 PN1/2シート:

3-2-1 [30]のネジ4 本を外し、PN1/2シートを外します。

（図 2）

3-3 PN2/2シート:

3-3-1 PSWノブを外します。（図 1）

3-3-2 [40A]のネジ2本を外し、PN2/2シートを外します。

（図 2）

PN 1/2

PN 2/2

[40A]

[40A][30]

[30]

4. サイドパネルL（所要時間：約 4 分）

4-1 トップカバーを外します。（1 項参照）

4-2 [170]のネジ5本と[180]のネジ4本、[200A]のネジ2

本を外し、マウントサポートパネルと共にサイドパ

ネル L を外します。（図 1）

5. 電源ユニット（所要時間：約 5 分）

5-1 トップカバーを外します。（1 項参照）

5-2 サイドパネル L を外します。（4 項参照）

5-3 [270B]のネジ2 本を外し、電源ユニットを外しま

す。（図 3）

[30]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)

[40A]: Bind Head Screw 3.0X8 MFZN2BL (VB659000)

Fig. 2 (図2)

2. Front Panel Assembly

(Time required: About 2 minutes)

2-1 Remove the six (6) screws marked [120] and the six

(6) screws marked [130].The front panel assembly

can then be removed. (Fig.1)

3. PN 1/2, PN 2/2 Circuit Boards

(Time required: About 3 minutes each)

3-1 Remove the front panel assembly.(See procedure 2.)

3-2 PN 1/2 circuit board:

3-2-1 Remove the four (4) screws marked [30].The PN 1/2

circuit board can then be removed. (Fig.2)

3-3 PN 2/2 circuit board:

3-3-1 Remove the power switch knob.(Fig.1)

3-3-2 Remove the two (2) screws marked [40A].The PN

2/2 circuit board can then be removed. (Fig.2)

4. Side Panel L

(Time required: About 4 minutes)

4-1 Remove the top cover.(See procedure 1.)

4-2 Remove the five (5) screws marked [170] and the

four (4) screws marked [180], the two (2) screws

marked [200A]. The side panel L can then be

removed with the mount support panel. (Fig.1)

5. Power supply unit

(Time required: About 5 minutes)

5-1 Remove the top cover.(See procedure 1.)

5-2 Remove the side panel L.(See procedure 4.)

5-3 Remove the two (2) screws marked [270B]. The

power supply unit can then be removed.(Fig.3)

（＋バインドBタイト）

（＋バインド小ネジ）

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9

PW5000

6. サイドパネル R（所要時間：約 4 分）

6-1 トップカバーを外します。（1項参照）

6-2 [150]のネジ8 本と[200B]のネジ2本を外し、マウン

トサポートパネルと共にサイドパネル R を外しま

す。（図 1）

7. DCユニット、DCシート（所要時間：約9分）

7-1 トップカバーを外します。（1項参照）

7-2 サイドパネル R を外します。（6 項参照）

7-3 [45]のネジ 3 本を外し、DC ユニットを外します。

（図 3）

7-4 [40B]のネジ5本と[60]のネジ14本、[90]のネジ3本

を外し、DC ユニットから DC シートを外します。

（図 4）

[45]

[270B]

（電源ユニット）

Powersupplyunit

[270B]

（DCユニット）



DCunit

Fig. 3

[45]: Bind Head Tapping Screw-B 4.0X10 MFZN2BL (EP600240)

[270B]: Bind Head Tapping Screw-B 4.0X8 MFZN2BL (EG340190)

6. Side Panel R

(Time required: About 4 minutes)

6-1 Remove the top cover.(See procedure 1.)

6-2 Remove the eight (8) screws marked [150] and the

two (2) screws marked [200B].The side panel R can

then be removed with the mount support panel.

(Fig.1)

7. DC Unit, DC circuit board

(Time required: About 9 minutes)

7-1 Remove the top cover.(See procedure 1.)

7-2 Remove the side panel R.(See procedure 6.)

7-3 Remove the three (3) screws marked [45].The DC

unit can then be removed. (Fig.3)

7-4 Remove the five (5) screws marked [40B], the

fourteen (14) screws marked [60] and the three (3)

screws marked [90].The DC circuit board can then

be removed from the DC unit. (Fig.4)

(図3)

（＋バインドBタイト）

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PW5000

10

（DCユニット

）

DCunit（DCユニット）DCunit

[40B]

[60][60]

[90]

[40B]

[40B] [40B]

[40B]

[60]

DC DC

8. リアAssy（所要時間：約 4 分）

8-1 トップカバーを外します。（1 項参照）

8-2 [200A]のネジ 2 本と[200B]のネジ 2 本、[200C]のネ

ジ3本、[310]のネジ 3 本を外します。（図 1）

8-3 AC1/3 シート K101,K102 からAC ケーブルを外し

て、リア Assy を外します。（図 5）

9. AC1/3シート（所要時間：約 5 分）

9-1 トップカバーを外します。（1 項参照）

9-2 リア Assy を外します。（8項参照）

9-3 [70]のネジ6本を外し、AC1/3シートを外します。

（図 5）

10. AC2/3、AC3/3シート（所要時間：各約3分）

10-1 トップカバーを外します。（1 項参照）

10-2 [160]のネジ4本と[320]のネジ1本を外し、DS金具

を外します。（図 5）

10-3 AC2/3シート:

10-3-1 [230A]のネジを外し、DS金具からAC2/3シートを

外します。（図 6）

10-4 AC3/3シート:

10-4-1 [230B]のネジを外し、DS金具からAC3/3シートを

外します。（図 6）

Fig. 4

[40B]: Bind Head Screw SP 3.0X8 MFZN2Y (EG330290)

[60]: Bind Head Screw SP 3.0X12 MFZN2Y (VB763800)

[90]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)

8. Rear Assembly

(Time required: About 4 minutes)

8-1 Remove the top cover.(See procedure 1.)

8-2 Remove the two (2) screws marked [200A], the two

(2) screws marked [200B], the three (3) screws

marked [200C] and the three (3) screws marked

[310]. (Fig.1)

8-3 AC cable is removed from the AC 1/3 circuit board

K101 and K102. The rear assembly can then be

removed. (Fig.5)

9. AC 1/3 Circuit Board

(Time required: About 5 minutes)

9-1 Remove the top cover. (See procedure 1.)

9-2 Remove the rear assembly.(See procedure 8.)

9-3 Remove the six (6) screws marked [70].The AC 1/3

circuit board can then be removed. (Fig.5)

10. AC 2/3, AC 3/3 Circuit Boards

(Time required: About 3 minutes each)

10-1 Remove the top cover.(See procedure 1.)

10-2 Remove the four (4) screws marked [160] and the

screw marked [320]. The DS angle can then be

removed. (Fig.5)

10-3 AC 2/3 circuit board:

10-3-1 Remove the screw marked [230A].The AC 2/3 circuit

board can thenbe removed from the DS angle.(Fig.6)

10-4 AC 3/3 circuit board:

10-4-1 Remove the screw marked [230B].The AC 3/3 circuit

board can thenbe removed from the DS angle.(Fig.6)

(図4)

（＋バインド小ネジ）

（＋バインドBタイト）

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11

PW5000

[160]

[160] [320]

（DS金具）



DSangle

（ACケーブル）ACcable

[70] [70]

K101

AC 1/3 AC 2/3

AC 3/3

K102

（ヒートシンク）

Heatsink

（DS金具）DSangle

[230

A]

[230B]

AC 2/3AC 3/3

[70]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)

[160]: Bind Head Tapping Screw-B 4.0X10 MFZN2BL (EP600240)

[320]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)

Fig. 5

[230]: Bind Head Tapping Screw-B 4.0X12 MFZN2BL (VR138400)

Fig. 6 (図6)

（＋バインドBタイト）

(図5)

（＋バインドBタイト）

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PW5000

12

IC BLOCK DIAGRAM（IC ブロック図）

TC74HC04AP (IR000400)

PW5K PN 1/2: IC307

Hex Inverter

TC74HC08AP (IR000800)

PW5K PN 1/2: IC309,310,313,314

Quad 2 Input AND

TC74HC14AP (IR001400)

PW5K PN 1/2: IC312

Hex Inverter

SN74HC21N (IR002150)

PW5K PN 1/2: IC311

Dual 4 Input AND

SN74HC563N (IR056350)

PW5K PN 1/2: IC317

Octal D-Type Latch

SN74HC573N (IR057350)

PW5K PN 1/2: IC316

Octal 3-State D-Latches

TC74HC4066AP (IR406600)

PW5K PN 1/2: IC308

Quad Bilateral Analog Switch

NJM2901N (IG036100)

PW5K PN 1/2: IC305,306

Comparator

NJM2041D-D (IG069200)

PW5K DC: IC201,202

Dual Operational Amplifier

1

2

3

4

5

6

7

1A

1Y

2A

2Y

3A

3Y

Vss

14

13

12

11

10

9

8

VDD

6A

6Y

5A

5Y

4A

4Y

1

2

3

1A

1B

1Y

2A

2B

4

2Y

5

VSS

VDD

4B

4A

4Y

3B

3A

3Y

6

7

14

13

12

11

10

9

8

1

1A

2

1Y

3

2A

4

2Y

5

3A

6

3Y

7

GND

14

VDD

13

6A

12

6Y

11

5A

10

5Y

9

4A

8

4Y

1

2

3

1A

NC

4

1C

5

1D

6

1Y

7

GND

1B

14

13

12

Vcc

2C

11

NC

10

2B

9

2A

8

2Y

2D

10

9

8

7

6

5

4

3

2

1

D6

D

CQ

OE

D

CQ

OE

D

CQ

OE

D

CQ

OE

D

CQ

OE

D

CQ

OE

D

CQ

OE

D

CQ

OE

D7

D8

GND

D5

D4

D3

D2

D1

Output

Control

Q6

Q7

Q8

Clock

Q5

Q4

Q3

Q2

Q1

Vcc

11

12

13

14

15

16

17

18

19

20

10

9

8

7

6

5

4

3

2

1

D5

D6

D7

GND

D4

D3

D2

D1

D0

OE

Q5

Q6

Q7

LE

Q4

Q3

Q2

Q1

Q0

Vcc

11

12

13

14

15

16

17

18

19

20

EN

C1

1D

(1)

(11)

(2)

(3)

(19)

(18)

(4) (17)

(5) (16)

(6) (15)

(7) (14)

(8) (13)

(9) (12)

1

2

3

4

5

6

7

IN/OUT 1

OUT/IN 1

OUT/IN 2

IN/OUT 2

Control 2

Control 3

VSS

14

13

12

11

10

9

8

VDD

Control 1

Control 4

IN/OUT 4

OUT/IN 4

OUT/IN 3

IN/OUT 3

1

B OUTPUT

2

3

4

5

6

7

A OUTPUT

V +

A - INPUT

A + INPUT

B - INPUT

8

9

10

11

12

13

14

C OUTPUT

D OUTPUT

GND

D + INPUT

D - INPUT

C + INPUT

C - INPUT

B + INPUT

+-+-

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

+-

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PW5000

13

to Power supply unit to Power supply unit

to DC OUTPUT

to DC PARALLEL INPUT

to PN 1/2-CN304

to PN 1/2-CN307

to Power supply unit

to Power transformer

(±16V)

to Power transformer

(INDI)

to Power transformer

(SUB12V)

to PN 2/2-CN401

to PN 1/2

-CN302

to PN 1/2

-CN303

AC 1/3 Circuit Board

CIRCUIT BOARDS

Note: See parts list for details of circuit board component parts.

AC 1/3, 2/3, 3/3 Circuit Board (X2605B0)................................ 13/14

DC Circuit Board (X2607B0)..................................................... 15/16

PN 1/2, 2/2 Circuit Board (X2606B0) ....................................... 17/18

注：シートの部品詳細はパーツリストをご参照ください。

Component side

AC 2/3 Circuit Board AC 3/3 Circuit Board

Component side（部品側） Component side（部品側）

2NAP-V994990-2 1

（シート基板図）

（部品側）

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PW5000

14

Pattern side（パターン側）

to DC-CN203

to Power transformer (±16V)to DC-CN201

to Power transformer (±16V)

to DC-CN203

to Power transformer (±16V)to DC-CN201

to Power transformer (±16V)

AC 1/3 Circuit Board

AC 2/3 Circuit Board AC 3/3 Circuit Board

Pattern side（パターン側）

2NAP-V994990-3 1

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PW5000

15

DC Circuit Board

2NAP-V994910-2 1Component side（部品側）

to DC PARALLEL INPUT

to DC OUTPUT

to PN 1/2-CN306

to PN 1/2-CN305

to AC 2/3-K504

to AC 3/3-K508

to Power transformer (±16V)

to AC 2/3-K503

to AC 3/3-K507

to DC OUTPUT

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PW5000

16

Pattern side（パターン側） 2NAP-V994910-2 1

DC Circuit Board

Connector assembly: WC414100

Connector assembly: WC414200

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PW5000

17

to FAN

to DC PARALLEL INPUT

to DC OUTPUT

to AC 1/3-CN106

POWER ON/OFF

FAN SPEED AUTO/HIGH

POWER ON/OFF

FAN HIGH

NORMAL +16 NORMAL -16 NORMAL +12 NORMAL +48

FAN STOPCAUTION +16 CAUTION +12 CAUTION +48CAUTION -16

THERMAL

LINE VOLTAGE

to AC 1/3-CN112

to DC-CN206 to AC 3/3-CN502

to DC-CN209 to AC 1/3-CN109

to AC 1/3-CN107

to Power transformer

(INDI)

to FAN

PN 1/2 Circuit Board

PN 2/2 Circuit Board

2NAP-V995010-2 2

Component side（部品側）

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8

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PW5000

18

PN 1/2 Circuit Board

PN 2/2 Circuit Board

Pattern side（パターン側）

2NAP-V995010-2 2

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19

PW5000

INSPECTIONS

1. Setup

If using a variable voltage transformer in the AC power supply, check for distortion on the AC waveform.

1

2

3

45

6

7

8

9

10

11

12 13

14

15

16

17

18 19

20

21

22

23 24

25

26

27

+48VGND

REMOTE 3 : FG

6,11,16,21: –16VGND

7,12,17,18: +12VGND

8,13: REMOTE

To make the PW5000 operation checks, setup the connector (shorting pins) shown in FIG. 1,

and the voltage check connector as shown in FIG. 2.

Short pin----- Connect to the DC OUTPUT

Fig. 1

Connector (female) : VP012200

(Solder terminal side)

123

4567

8910 11 12

13 14 15 16 17 18

19 20 21 22 23

24 25 26 27

Voltage measurement connector (measurement points) --- connect to DC PARALLEL INPUT

Fig. 2

(Solder terminal side)

-16V –16VGND

+16V

+48VGND

+48V

+12VGND

+12V

Connector (male) : VP012100

1: -16V

6: –16VGND

9: +16V

18: -12VGND

19: +48V

24: +48VGND

25: +12V

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TEL 13942296513 QQ 376315150 892498299

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PW5000

20

2. Structure

·Power supply circuits ±16 volts, +12 volts, +48 volts

·Safeguard circuits

·Primary power supply voltage (LINE VOLTAGE) display circuit (hereafter, listed as LV)

3. Electrical Performance

3-1 Checking operation

3-1-1 Check LV circuit operation

Check that the LV is displayed simultaneous with turning the primary power on, regardless of whether the power supply

switch is ON or OFF.

3-1-2 Check operation under no-load

①Check that the shorting pins are not connected to the DC OUTPUT.

·Check that turning on the power supply switch lights up the “POWER” LED (green) and the fan rotates. Also check

that there is no operating noise from the power relay and that the “CAUTION (red)”, “STOP (red)”, and “THERMAL

(red) all light up (total 6 locations) about 4 ±2 seconds after the power switch is turned on.

②Connect the shorting pin to the DC OUTPUT.

·Check that the “POWER” LED (green) lights up simultaneous with turning on the power supply switch, and that the

fans (2 units) start rotating.

·Check that all 4 of the voltage display LED “NORMAL” (green) light up 4 ±2 seconds after the power switch is turned on.

·Check that the fan rotates at low speed, when the“FAN AUTO/HIGH”switch is set to the “AUTO”side.Check that the

fan rotates at high speed and the “HIGH” LED lights up when the fan switch is set the “HIGH” side.

When finished checking the above “FAN AUTO/HIGH” switch, return the switch to the “AUTO” position.

See Page 21 on Fig. 3 to find the LED lighting locations.

3-1-3 Checking voltage output from the power supply circuits +12 volt line, +48 volt line, +16 volt line,

-16 volt line.

1) +12 volt line

Check that approximately +13 volts is supplied from the voltage measurement connector (across +12V and +12VGND).

2) +48 volt line

Check that approximately +49 volts is supplied from the voltage measurement connector (across +48V and +48VGND).

3) +16 volt line

Check that approximately +17 volts is supplied from the voltage measurement connector (across +16V and ±16VGND).

4) -16 volt line

Check that approximately -17 volts is supplied from the voltage measurement connector (across -16V and ±16VGND).

3-1-4 Check operation of ±16 volt detector circuit

1. Check that about 4 ±2 seconds after power is turned on while the primary line (CN101 and CN102 of AC 1/3 circuit

board) of the ±16 volt supply is disconnected;among the 4 voltage display LED, the +16, -16 “CAUTION” LED lights

up (“NORMAL” LED of +12, +48 light up). Also check that the unit shuts down about 8 ±2 seconds after power is

turned on but that the two +16, -16 “CAUTION” LED and the “POWER” LED remain lit up.

2. Check that when power is turned on while the CN502 of AC 3/3 circuit board is removed, the 4 voltage display

“NORMAL” LED light up. Also check that the unit shuts down about 8 ±2 seconds after power is turned on, and that

only the “POWER” LED remains lit up.

3. Check that when power is turned on while CN209 of DC circuit board is removed, the fan “HIGH”LED lights up (Fan

itself also rotates at high speed). Also check that the 4 “NORMAL” LED, and the “THERMAL” LED light up about 4 ±

2 seconds after power is turned on. Further check that the unit shuts down about 8 ±2 seconds after power is turned

on, but that the “THERMAL”“HIGH” and “POWER” LED remain lit up.

After making the above checks, reinsert the connectors that were removed in each item to make the above checks.

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Yamaha PW5000 User manual

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