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KRC-597/597Y
SYNTHESIZER UNIT (X14-9182-71)
Ref. No.
Application / Function
System µ-COM
IC1
IC2
E.Vol & N.C.MPX
IC3
Power Supply IC
IC4
Power IC
IC6
Muting logic IC
IC7
RDS decoder
IC8
Reset IC
IC9
Equalizer amplifier
IC 11
Sub Motor Driver
Q1
Serge Detection
Q2
BACK-UP Detection
Q3
ACC Detection
4
COMPONENTS DESCRIPTION
Controls FM/AM tuner, the changer, cassette mechanism, Panel, volume and tone.
Controls the source, volume, tone and FM multiplex detector.
Bu5V (5V), Audio8V (8V), FM+B (8V), AM+B(8V), P-CON, ANT-CON
IN
EN1
ILLUMI
0V
OFF
5V
ON
IN
EN2
AM
0V
OFF
2.5V
OFF
5V
ON
IN
EN3
ANT-CON
0V
OFF
2.5V
OFF
5V
ON
Amplifies the front L/R and the rear L/R to 50W or 47W maximum.
Controls logic for muting.
"L" when detection voltage goes below 3.5V or less.
Dolby-B, Metal-EQ, Equalizer the Tape sound (120µsec).
Sub motor control
IN
IN1 (-)
IN2 (+)
L
L
L
H
H
L
H
H
"L" when the back-up voltage becomes more than 18V (momentary power down). "H" when the
back-up voltage becomes less than 18V.
"L" when B.u is present. "H" when B.u is absent or momentary power down is detected.
"L" when Acc is present.
Operation / Condition / Compatibility
OUT
OUT
FM
A8V
OFF
OFF
ON
ON
OFF
ON
OUT
P-CON
OFF
ON
ON
SUB MOTOR
STOP
CW
CCW
STANDBY
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