Yamaha BBG5S service manual Circuit Boards, IC Block Diagram

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