Yamaha J-3000 Service Manual download pdf (Page 85)

CB504

CB505

CB506

IC511

IC509

IC508

IC510

CB507

CB508

IC505

IC501

CB501

IC502

IC503

IC504

IC507

IC506

BCDEFGH I JK

L MN

YSP-3000/YSP-30D/HTY-7030

★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.

★ Components having special characteristics are marked s and must be replaced

with parts having specifications equal to those originally installed.

★ Schematic diagram is subject to change without notice.

POWER 1/2

(0)

(59.8)

(59.0)

(15.5)

(4.0)

(0.5)

(2.7)

(0.7)

(0)

(164.1)

16.0

(4.0)

(15.6)

(1.9)

(1.5)

(0)

(-0.2)

(15.6)

(163.8)

(238.3) (238.3)

(163.9)

(0)

15.5

(0)

(2.7)

11.1

10.7

(5.9)

(1.1)

4.4

16.0

12.1

15.5

16.0

10.7

11.9

12.9

-36.6

-32.7

-32.1

12.1

5.0

12.1 5.0

12.1

5.0

4.1

3.3

(66.6)

(166.6)

(255.7)

(166.6)

(11.8)

(11.8) (0)

(0)

(2.4)

(1.1)

(5.9)

(166.6)

(0)

(65.7)

04.4

6.8

(7.8)

(1.0)

0.1

(7.8)

6.8

4.4

6.8

(0)

(3.9)

(1.0)

1.0

3.2

3.3

4.4

3.3

3.2

4.4

(0)

(3.9)

6.8

0.2

4.4

0.8

C-1

C-2

0.8V/0.68V

8.5V/7.9V

5V VCC

ENB

5V REF

3.5V

RT CT

OSC

+0.24V

ENB

OUT

PUT

16.5V/9V

UVLO

15.5V

5.2µA

0.95mA

PWM

0.8V

Dmax

FA5510: 46%

FA5511: 70%

5V Controlled block

(2)

REF

(7)

CS(8)

VCC(6)

OUT

(5)

GND

(4)

IS+(3)RT(1)

IC504: FA5511N-D1-TE1

CMOS IC for switching power supply control

IC502: MIP2F40MSSCF

For switching power supply control

clamp circuit

[LM setting]

[LM ]

variable

circuit (5-100%)

VCC

VDD

ICL_LOW

MAXDC

CLOCK

12KHz

Constant

current resource

Overheat

protection

[LM ]

compensation

Blankin g pulse

generation

circuit in on-state

Restart

trigger

VCL_OUT

5.7V

5.9V

5.1V

7.5V

VCC UV

VCL

VCC OVP

Oscillator

Light load detection

For intermittent

Oscillation control

Drain current

for detection

Power

MOSFET

Gate driver

VDD clamp circuit

regulator

6.6V

24V

27%

22%

DRAIN

SOURC

IC508, 512: NJM431U

Adjustable precision shunt regulator

ANODEREFERENCE CATHODE

12 3

IC510, 511: NJM78M05FA

3-terminal positive voltage regulator

OUT

GND

IC509: NJM78M12FA

Voltage regulator

INPUT

OUTPUT

COMMON

VDD

Pin No. Symbol Description

OUT

Output Pin for Voltage Regulator

GND Ground

Power Supply Pin

Chip Enable Pin (active at "H")

B Version No Connection

OUT

GND

IC507: R1154N033B-TR-F

Voltage regulator

Vref

Short

Protection

Circuit

Current

Limit

Circuit

Thermal

Shutdown

POINT C-1 C-2 1 / Pin 1 of IC507, 2 / Q505 (C)

AC cable ON

AC cable OFF

IC507 1pin

Q505 (C)

IC507 1pin

Q505 (C)

AC cable ON

AC IN

POWER (1)

Primary side ground

to AMP_CB511

Page 83

to INPUT_CB12

Page 81 J7

to POWER (2)_W901

Page 86 K5

to DSP_CB7

Page 80

to HDMI_CB5

Page 84

N10

5 k-ohms

10 W

5 k-ohms

10 W

安全対策 

・この製品の内部には高電圧部分があり危険です。修理の際は、絶縁性の手袋を使用するなどの安全対策を行ってください。

・下記箇所には電源をOFFにした後も電荷が残り、高電圧が維持されており危険です。

修理作業前に放電用抵抗（5 kΩ/10 W）を下記箇所の端子間に接続して放電してください。放電所用時間は約30秒間です。

1. POWER（1）P. C . B . のC504／C505

2. POWER（1）P. C . B . のC518

Safety measures

• Some internal parts in this product contain high voltages and are dangerous. Be sure to take safety measures during servicing, such as wearing insulating gloves.

• Note that positions indicated below are dangerous even after the power is turned off because an electric charge remains and a high voltage continues to exist there.

Before starting any repair work, perform discharge by connecting a discharge resistor (5k-ohms/10W) between terminals at following positions. The time required for

discharging is about 30 seconds.

1. C504/C505 on POWER (1) P.C.B..

2. C518 on POWER (1) P.C.B..