Kenwood KDCX 469 Service Manual

Page 1

CD RECEIVER

KDC-6024/Y KENWOOD
KDC-X469

SERVICE MANUAL

0CD MECHANISM OPERATION DESCRIPTION is not in this sevice manual.
Please refer to service manual for X92-4450-0X (351-7889-00).

© 2003-1 PRINTED IN JAPAN
853-0026-00 (N) 3114

CD mechanism extension cord (24PIN) : W05-0934-00
Panel assy Front lass
(A64'2837'02 1 KDC5024/6024Y ) (Bio-$31301 ; KDC-6024/6024Y)

Panel assy Front glass
(A64-2827-02 : KDC-X469) (810-4307-01 : KDC»X469)

-2- DC cord >Z< DC cord >Z< Antenna adaptor >.< Screw set Screw set Lever
X (530493905) (E30-4944-05) (T90-0523-05) (N99-1719-15) (N99-1730-15) (D10-4589-04)
(E30-4958-05)

.lm l

C? 0")
0,5210 0Q
X Escutcheon Mounting hardware assy Plastic cabinet assy >Z< Remote controller assy(RC-505)
(BO7-3022-02) (J21 -971 6-03) (A02-1486-13) (A70-2040-05)
(307-3075-02)

>I

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KDC-6024/Y/X469

COM PONENTS DESCRIPTION

0 CD PLAYER UNIT (X32-5200-00)

Ref.No. Component Name Application/Functions Operation/00ndion/Compatibility

|C1 AN22002AA FlF amplifier adapted for CD-RW Generation of RF signal based on the signals from the APC circuit and
pickup, and generation of servo error (focusing error and tracking error)
signals. Detection of dropout, anti-shock, track crossing and off-track
conditions, included gain control function during CD-RW.

|02 MN6627774KH2 CD Signal processor built-in Ml-COM Focusing, tracking, sled and spindle servo processing. Automatic
adjustment (focusing, tracking, gain, offset and balance) operations.
Digital signal processing (DSP, PLL, sub-codes, CIRC error correction,
audio data Interpol ration) operations, and Microcomputer function.

|C4 BA5824FP 4CH BTL driver Focusing coil, tracking coil, spindle motor and sled motor driver, disc
loading and eject operation.

|C6 NJM4580M1 Low pass filter 2nd low pass filter for audio signals

01 MCH6101 APC LD power control

Q2 DTC124EUA D.5V SW When P ON signal gose"L", 02 is ON

Q3 DTA143XUA Q4 SW When P ON signal gose"L" (SW+5V AVR is ON), ()3 is ON

Q4 28A1362(Y) A.8V SW When P ON signal gose"L" (03 is ON), Q4 is ON

D1 DAN202U Protection diode Laser diode protection

D2 MA8051-L Zener diode DAC AVR/LPF reference voltage (A.5V)

D3 DA204U Current driver Current driver

O ELECTRIC UNIT (X25-9

712-71/9800-10/9802-71)

Ref.No. Component Name Application/Functions Operation/00ndition/Compatibility

|C1 UPD70303OGCO13 System microcomputer Control for TUNER unit, 0D mechanism, volume & tone, LCD driver and
external CD changer unit

|02 TDA7411 Electronic volume & N.C.MPX Control for source selector, volume & tone, and FM multiplex detector.

|03 BA4911-V4 Power supply lC Power supply for the units (Bu5V, AudioSV, FM+B, AM+B, P-con and ANT-con).

1.5731)
'71) I -
. m
4.0 - m na

|C4 TA8273H Audio power amp IC Amplifier for audio signal to derive for 4channel speakers (50W maximum
for each channel).

IC6 HD74H027FP Muting control IC Control for timing for mute.

IC7 8AA6581T FlD8 decoder Decode for FlD8 signal.

|C8 P8T3436UL Fleset IC When detection voltage goes below 3.5V or less Reset l0 output change
to "L" signal.

Q1 2804081 Serge detection When backup voltage become more than 24V output is "L" (momentary
power down) / When backup voltage become less than 24V output is "H".

Q2 2804081 Backup detection When BU voltage supplied output is "L" / When BU voltage not supplied
or momentary power down is detected output is 'H".

03 2804081 ACC detection When ACC voltage supplied output is "L".

Q4 28A1036K 8W 5V When base voltage is "L" Q4 is ON.

021 28D2375 AVR Servo regulator.

022 UMC2N 8W Servo SW.

023 UM02N l0 control Power supply lC controller.

Q31 UN5213 Dimmer control When base voltage is "H" dimmer is ON.

032 DTA123JK EXT. AMP control Control to EXE.AMP for pulse width signal.