FL+B (VDD2) is turned on when Q3's base level goes "H"
FL+3.3V (VDD1) is turned on when Q4's base level goes "H"
SW3.3V is turned on when Q5's base level goes "H"
REMO ON SW
The power supply of IC9, 10 is turned on when Q10's base level goes "L"
FL BLK SW
VFD is turned on when Q7's base level goes "H"
Blue LED SW
Blue LED is turned on when Q8's base level goes "H"
q SWITCH UNIT (X16-2170-10)
DSI (Disabled System Indicator)
DSI blinks when the base goes "H/L"
KEY illumination SW (GREEN)
ON (KEY illumination green) when the base goes "H"
KEY illumination SW (RED)
ON (KEY illumination red) when the base goes "H"
q ELECTRIC UNIT (X25-964x-xx)
E-vol & N.C. & MPX
Regulator IC for A8V
System E's IC
Audio IC (WOW)
-9V AVR (DC/DC IC) for 4.5V Pre-out
Logic IC for muting
Buffer for S.A
AMP for 4.5V Pre-out
RDS dcoder IC
Motor driver IC for panel mechanism
For ROM correction.
Swiching regulator IC for CD4.7V
Analog SW for swiching IC6'focus
While BU is applied, BU5V AVR outputs +5V.
When Q601'base goes Hi, SW5V outputs +5V.
When Q5'base goes Hi, SW14V outputs 14V.
AUDIO 8V AVR
When Q6'base goes Hi, A8V AVR outputs 8.3V.
When Q602'base goes Hi, S+B AVR outputs 7.5V.
When Q11'base goes Hi, AVR outputs 9.2V.
AUDIO 10.5V AVR
When Q16'base goes Hi, AVR outputs 10.5V.
Pre-Amp -9V AVR
Q18 and 19 works as a differential amplifier, Q17 works as a driver and -9.1V is supplied
to OP amp for Pre-out.