KRC-391/Y,36/Y,30Y
3
COMPONENT DESCRIPTION
●
SWITCH UNIT(X16-1532/1722-XX)
REF.No.
FUNCTION
OPERATION
IC1
LCD DRIVER
Receives key signal when the base terminal voltage becomes "L".
Key illumination color becomes green when the base terminal voltage becomes "H".
Key illumination color becomes red when the base terminal voltage becomes "H".
●
SYNTHESIZER UNIT(X14-6892/9002-XX)
REF.No.
FUNCTION
OPERATION
IC1
SYSTEM
µ
-COM
IC2
E-VOLUME
IC4
POWER AMPLIFIER
Speaker output
IC6
RDS DECODER
IC7
POWER IC
IC8
MUTE CONTROL LOGIC
3 input NOR gate x 3
IC9
EQUALIZER AMPLIFIER
For full logical cassette mechanism control
IC10
SUB MOTOR DRIVER
For full logical cassette mechanism sub motor driver
IC11
RESET IC
Detection voltage below 3.0V
IC12
EEPROM
Q1
P.CON.DETECTION
Detects P.CON voltage.
Q10
BACK-UP DETECTION
Detects the back-up voltage.
Q11
SERGE DETECTION
Detects serge voltage.
Q20
ACC DETECTION
Detects ACC voltage.
Q40
PREOUT MUTE DRIVER
Mutes when the base terminal voltage level becomes "L".
Q50
5V SW
Works when the base terminal voltage level becomes "L".
Q101
DSI SW
LED for DSI works when the base terminal voltage level becomes "H".
Q151
PANEL 5V SW
Works when the base terminal voltage level becomes "L". Supplies VDD to panel.
Q201
NOISE DETECTION
Detects noise.
Q221-224 PREOUT MUTE
Mutes when the base terminal voltage level becomes "H".
Q251
POWER IC SVR SW
Discharges the capacitor's voltage of SVR terminal after the base terminal voltage
becomes "H".
Q301
LOCAL SEEK SW
Changes to the local seeking after the base terminal voltage becomes "H".
Q501
MOTOR DRIVER AVR
Works when the base terminal voltage becomes "H". Supplies the power to the motor
driver.
Q551
MAIN MOTOR SW
Works when the base terminal voltage becomes "L".
Q552
MAIN MOTOR SW
Works when the base terminal voltage becomes "H".
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