Kenwood KRC 36 Service Manual

Page 3

KRC-391/Y,36/Y,30Y

COMPONENT DESCRIPTION

0 SYNTHESIZER UNIT(X14-6892/9002-XX)

REF.No. FUNCTION OPERATION
|C1 SYSTEM u-COM
ICZ E-VOLUME
|C4 POWER AMPLIFIER Speaker output
ICG RDS DECODER
|C7 POWER IC
ICB MUTE CONTROL LOGIC 3 input NOR gate x 3
ICQ EOUALIZER 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
|C12 EEPROM
01 P.CON.DETECTION Detects P.CON voltage.
010 BACK-UP DETECTION Detects the back-up voltage.
011 SERGE DETECTION Detects serge voltage.
020 ACC DETECTION Detects ACC voltage.
040 PREOUT MUTE DRIVER Mutes when the base terminal voltage level becomes "L.
050 5V SW Works when the base terminal voltage level becomes "".L
0101 DSI SW LED for DSI works when the base terminal voltage level becomes "H".
0151 PANEL 5V SW Works when the base terminal voltage level becomes "".L Supplies VDD to panel.
0201 NOISE DETECTION Detects noise.
0221-224 PREOUT MUTE Mutes when the base terminal voltage level becomes .H
0251 POWER IC SVR SW Discharges the capacitor's voltage of SVR terminal after the base terminal voltage
becomes "".H
0301 LOCAL SEEK SW Changes to the local seeking after the base terminal voltage becomes .H
0501 MOTOR DRIVER AVR Works when the base terminal voltage becomes "H. Supplies the power to the motor
driver.
0551 MAIN MOTOR SW Works when the base terminal voltage becomes 'L"
0552 MAIN MOTOR SW Works when the base terminal voltage becomes "H .

O SWITCH UNIT(X16-1532/1722-XX)

REF.No. FUNCTION OPERATION
IC1 LCD DRIVER
I02 REMOTE SENSOR
01 KEY SCAN SW Receives key signal when the base terminal voltage becomes "L".
02 KEY ILLUMINATION SW Key illumination color becomes green when the base terminal voltage becomes "'H.
03 KEY ILLUMINATION SW Key illumination color becomes red when the base terminal voltage becomes "H".