BBG5S

REF NO.

PART NO.

DESCRIPTION

 

 

REMARKS

QTY

RANK

 

QC354700

Circuit Board Assembly

 

 

BB G5S

 

09

IC1

IG028400

IC

NJM4558D-Y

 

OP AMP

 

03

D1

IF000040

Diode

1S1555

 

 

 

01

VR3,4

QC251700

Variable Resistor

B50K ohm CC

 

TREBLE,BASS

 

04

 

 

 

 

 

 

 

 

: New Parts

RANK : Japan only

CIRCUIT BOARDS

TREBLE

      

Component side

IC BLOCK DIAGRAM

NJM4558D-Y (IG028400)

Dual Operational Amplifier

Output A

1

 

 

 

 

 

 

 

+V 8

+DC Voltage

 

 

 

 

 

 

 

 

 

 

 

 

Supply

Inverting

2

 

 

 

 

 

 

 

 

 

7

Output B

Input A

 

-

 

+

 

 

 

 

 

 

Non-Inverting

3

 

 

 

 

6

Inverting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input A

 

 

 

 

+ -

 

 

 

Input B

-DC Voltage Supply

4 -V

 

 

 

 

 

 

5

Non-Inverting

 

 

 

 

 

 

Input B

BASS

 

 

 

 

 

 

 

 

 

 

     

Component side

 

to Battery

 

to Balance

 

to Volume

4

Page 4
Image 4
Yamaha BBG5S service manual Circuit Boards, IC Block Diagram