Components Description; Cd Player Unit (X32-5490-00) - Kenwood KDC-205 Service Manual

KDC-205/CR, 226
KDC-2026, 3026/R
QQ
3 7 63 1515 0
SWITCH UNIT (X16-2460-21/2470-xx)
Ref No. Application/Functions
IC1 LCD driver
IC2 Sensor
Q1 Key scan detect
Q2 LED SW
Q3 LED SW

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 (X34-3100-21/3110-xx)
Ref No. Application/Functions
IC1 System control IC
TE
L 13942296513
IC4 Audio power IC
IC6 RDS decoder
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
Q53 Control SW for SERVO +B
Q55 SERVO +B AVR
Q70 Serge detector
Q101 DSI illumination SW
Q102 Panel 5V SW
Q201 Noise buffer
Q223,224 Preout muting SW
Q251 SW
Q252 Smeter RC & MPTHTC SW
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Q253 Smeter RC & MPTHTC SW
Q501 AM RF amplifier
.
Q502 FM RF amplifier
Q503 MPX buffer
4

COMPONENTS DESCRIPTION

LCD derive & Key input interface
Remote control sensor
key scan start at base gose "L".
When Q2 base gose "H" LED is light on RED Color
When Q2 base gose "H" LED is light on GREEN Color
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
RDS decoder IC
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
When the base goes "H" (Servo +B : ON)
Servo AVR (7.4V)
When the base goes "H" (Serge detection)
When the base goes "L" (DSI illumination : ON)
When the base goes "L" (Panel 5V : ON)
Tuner audio noise buffer amplifier
When the base goes "H" (Preout muting : ON)
When the base goes "L" (IC4 : ON)
RC & TC is "LONG" when the base is "H" (base is "L" is AF search)
When collector is "H", emitter is "H"
x ao u163
y
When the base goes "H" (RF circuit gain is up)
i
When the base goes "H" (RF circuit gain is up)
MPX input buffer with RDS
2 9
8
Operation/Condition/Compatibility
Operation/Condition/Compatibility
Operation/Condition/Compatibility
Q Q
3 6 7 1 3 1 5
co
.
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9