Components Description - Kenwood CKDC-392V/VA Service Manual

CKDC-392V/VA/VD/VDA
CKDC-492V/VD
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SWITCH UNIT (X16-2850-10/11/12/13)
Ref No. Application/Functions
IC1 LCD driver
IC2 Sensor
Q1 Key scan detect
CD PLAYER UNIT (X32-5490-00)
Ref No. Application/Functions
IC1 Mechanism control
IC2 SW3.3V AVR
IC3 CD DSP & servo IC
IC4 BTL driver
Q2 SW
Q3 APC
Q4 SW
ELECTRIC UNIT (X34-3350-10/11)
Ref No. Application/Functions
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IC1 System control IC
L 13942296513
IC4 Audio power IC
IC7 Power supply IC
IC8 Muting logic IC
IC10 E-VOL & tuner IC
IC11 Reset IC
IC12 E2PROM
Q10 BU detector
Q20 ACC detector
Q40 Muting driver foe Q223, 224
Q50 SW5V
Q51 SW
Q55 SERVO +B AVR
Q70 Surge detector
Q101 DSI illumination SW
Q102 Panel 5V SW
Q223,224 Preout muting SW
Q501 AM RF amplifier
Q502 FM RF amplifier
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COMPONENTS DESCRIPTION

LCD derive & Key input interface
Remote control sensor
Key scan start at base gose "L".
When BU5V & MSTOP (12pin) goes "H" (IC1 is active)
When CNTL (1pin) goes "H" (SW3.3V AVR : ON)
CD RF amp, Servo, DSP & DAC
Focus, tracking coil, Sled & Spindle motor driver IC
SW5V SW transistor
Auto Power Control
EQ SW transistor
System control microprocessor
Audio power amplifier
Multi AVR IC (for 5V, 8V, P-CON & P-ANT)
Control for MUTE, P-ANT & RESET muting
E-VOL. FM/AM tuner & stereo decoder
When BU5V line voltage is less than 3.5V, this IC output line is "L"
Memorized tuner adjustment data (save & load)
When the base goes "H" during BU applied (ON)
When the base goes "H" during ACC applied (ON)
When the base goes "L" (Muting : ON)
When the base goes "L" (SW5V : ON)
Control SW for IC7
Servo AVR (7.4V)
When the base goes "H" (Surge detection)
When the base goes "L" (DSI illumination : ON)
When the base goes "L" (Panel 5V : ON)
When the base goes "H" (Preout muting : ON)
When the base goes "H" (RF circuit gain is up)
When the base goes "H" (RF circuit gain is up)
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Operation/Condition/Compatibility
Operation/Condition/Compatibility
Operation/Condition/Compatibility
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