Kenwood KDC-9023R, KDC-PSW9524, KDC-X969 Service Manual

CD RECEIVER

KDC-9023R KDC-PSW9524 KDC-X969

SERVICE MANUAL

CD mechanism operation description is not in this service manual. Please, refer to service manual X924030-0x (B51-7867-00).

Panel assy (A64-2982-01): KDC-9023R, (A64-2984-01):KDC-PSW9524

Panel assy (A64-2975-01): KDC-X969

CD mechanism extension cord : W05-0935-00

50 4W

COMPACT

DIGITAL AUDIO

50 4W

COMPACT

DIGITAL AUDIO

Escutcheon (B07-3079-01)

Panel assy (A64-2993-02): KDC-X969

Escutcheon (B07-3079-01)

Remote controller assy (RC-505) (A70-2040-05) : KDC-X969

Mounting hardware assy (J21-9823-03)

Remote controller assy (RC-420) (A70-2026-05) : KDC-9023R/PSW9524

Plastic cabinet assy (A02-2731-03)

Lever (D10-4674-04) x 2

Size AA battery (Not supplied)

DC cord (ISO) (E30-4942-05) : KDC-9023R/PSW9524

Screw set (N99-1723-05) : KDC-X969/9023R

Screw set (N99-1734-05)

Panel assy (A64-3002-02): KDC-9023R/PSW9524

DC cord (E30-6062-05) : KDC-X969

Antenna adaptor (T90-0552-05) : KDC-9023R/PSW9524

KDC-9023R /PSW9524/X969

HOW TO THE PANEL MECHANISM ASSEMBLY

1. Fixed the position of operation side (Fixed the horizontal position when the panel opened)

q The mounting hardware (281) of operation side is rota-

tion (A) into the stop position with close side.

w As figure (B) line is just above and the gear (230) at-

tached to pin.

2. The slider assembly insert to bottom chassis

q The bracket for display panel (284) is leave down, in-

sert to the chassis (702). (C)

Rotary to the stop position

This line attached just above

Fig. B

(This figure from look at B arrow)

284

281

230

w The slider assembly insert to the chassis (702) after

that shift (D) direction.

e The bracket for display panel (284) is raised (E) direc-

tion.

r Keep the raising conditions, the slider assembly is shift

(F) direction. (Note) Do not bend the knob of chassis detection switch when the slider assembly insert.

702

284

702

BLOCK DIAGRAM

KDC-9023R

/PSW9524/X969

(X25-964)

TUNER

AUDIO OUT

S-METER

Q501

EEP5V

IC1

EEPROM

TDF UNIT (X16-208)

DISPLAY UNIT (X16-210)

SWITCH UNIT

(X16-217)

BU5V

REMO

IC9

Q303,304

AM+B

8V 8V

IC14

BU5V 8V SERVO CD4.7V

BACK UP

IC7

LEVEL SHIFT

IC11

ROT ARY ENCODER

BUFFER

SW5V

RDS DECODER

IC8

u-COM

LEVEL SHIFT

BPF

BU5V

IC3

IC2

IC4

IC10

KEY

KEY MATRIX

AGC

IC1

SRAM

MASK ROM

FLASH MEMORY

BPF

BUFFER

AGC

RESET SW

SW5V

PANEL5

Q6,10

PANEL SW5V

IC6

3.3V

SW3.3V

FL3.3V

Q2,3

FL+B

IC2

FM AM CD CH

QUAL

u-COM

KEY ILL

E-VOL

MPX

IC15

MOTOR

FL+B

FAC

IC5

SYSTEM E'S+

IC20

FOCUS SW

IC8

SERVO

PANEL MECHA

SW5V

DC/DC

WOW

RESET

IC16

MOTOR DRDR

IC6

BU5V

IC9

MUTE DRIVER

Q207,208

PRE MUTE

Q203,204

PRE MUTE

Q205,206

PRE MUTE

IC4

POWER IC

BU5V

IC18

Q23,24

ANT-CON ANT CON

Q25

EXT AMP

Q26

DIMMER DIMMER

TEL MUTE

Q29

ACC DET

Q27

B.U DET

BU5V

SW5V

PANEL5V

SW14V

DC/DC A8V

SERVO

CD4.7V

IC13

IC12

IC11

P-CON P CON

Q1,2

BU5V

Q3,601

SW 5V

Q502,503

PANEL 5V

Q4,5

SW 14V

Q6-8

A8V

Q9,602

SERVO

Q11-14

FL+B

IC19

SW REG

OP AMP

AUX IN

PRE OUT (NF)

PRE OUT (REAR)

PRE OUT (FRONT)

SP OUT (FL) SP OUT (FR) SP OUT (RL) SP OUT (RR)

WIRED REMO/ OPEL DISP I/F

EXT.AMP.CON

TEL MUTE

ACC

BACK UP

KDC-9023R /PSW9524/X969

BLOCK DIAGRAM

(X32-5440-00) PICK-UP

TR COIL

FO COIL

SPINDLE MOTOR

LOADING & SLED MOTOR

APC

MOTOR DRIVER

D. GND

IC4

IC11

VREF

CLOCK

16.93MHz

S. GND

1 CHIP IC

SERVO

PROCESSOR

RF AMP

MP3 DECODER

CLOCK

24.57MHz

IC9

WMA DECODER

D. GND

916

IC2

IC13

IC7

D. GND

A. GND

LPF

DRAM

D. GND

PON

u-COM

PON

CLOCK

16.00MHz

SW5V

IC5

2.5V REG

8V SW

D. GND

(0-01) ONLY

IC6

A3.3 REG

IC6

D3.3V REG

A. GND

D. GND

MOTHER BOARD

Rch Lch A. GND

A. +8V D. GND

BU. +5V

D4.7V

LOE/LIM SW

8EJE SW

12EJE SW

LOS SW S7.5V

S. GND LO/EJ MOTOR

COMPONENTS DESCRIPTION

● SUB-CIRCUIT UNIT (X16-2080-10)

Ref. No. Application/Function Operation/Condition/Compatibility

IC1 E2PROM For security

● SUB-CIRCUIT UNIT (X16-2100-10)

Ref. No. Application/Function Operation/Condition/Compatibility

IC2 ROM IC IC3 SRAM IC IC4 Flash ROM IC For Display customize IC5 Logic IC For Write and Read to IC3 IC6 3.3V regulator The power supply for 3.3V IC7 Buffer IC It is change into 3.3V from 5V IC8 Buffer IC It is change into 5V from 3.3V IC9 Remote control IC IC10 Spectrum analyzer IC IC11 Panel µ-com Q1 3.3V regulator While PAN 5V is applied, 3.3V regulator outputs +3.3V.

/PSW9524/X969

COMPONENTS DESCRIPTION

Ref. No. Application/Function Operation/Condition/Compatibility

Q2, 3 FL+B SW FL+B (VDD2) is turned on when Q3’s base level goes “H” Q4 FL3.3V SW FL+3.3V (VDD1) is turned on when Q4’s base level goes “H” Q5 3.3V SW SW3.3V is turned on when Q5’s base level goes “H” Q6, 10 REMO ON SW The power supply of IC9, 10 is turned on when Q10’s base level goes “L” Q7 FL BLK SW VFD is turned on when Q7’s base level goes “H” Q8 Blue LED SW Blue LED is turned on when Q8’s base level goes “H”

● SWITCH UNIT (X16-2170-10)

Ref. No. Application/Function Operation/Condition/Compatibility

Q1 DSI (Disabled System Indicator) DSI blinks when the base goes “H/L” Q2 KEY illumination SW (GREEN) ON (KEY illumination green) when the base goes “H” Q3 KEY illumination SW (RED) ON (KEY illumination red) when the base goes “H”

KDC-9023R

● ELECTRIC UNIT (X25-964x-xx)

Ref. No. Application/Function Operation/Condition/Compatibility

IC1 System µ-com IC2 E-vol & N.C. & MPX IC3 Regulator IC for A8V IC4 Power IC IC5 System E’s IC IC6 Audio IC (WOW) IC7 IC8 Reset IC IC9 Logic IC for muting IC10 Buffer for S.A IC11~13 AMP for 4.5V Pre-out IC14 RDS dcoder IC IC15, 16 IC17 ROM IC For ROM correction. IC18 P-CON IC IC19 Swiching regulator IC for CD4.7V IC20 Analog SW for swiching IC6’focus Q1, 2 B.U.5V AVR While BU is applied, BU5V AVR outputs +5V. Q3, 601 SW5V When Q601’base goes Hi, SW5V outputs +5V. Q4, 5 SW14V When Q5’base goes Hi, SW14V outputs 14V. Q6~8 AUDIO 8V AVR When Q6’base goes Hi, A8V AVR outputs 8.3V. Q9, 602 SERVO+B AVR When Q602’base goes Hi, S+B AVR outputs 7.5V. Q11~14 ILL&DC/DC+B AVR When Q11’base goes Hi, AVR outputs 9.2V. Q15, 16 AUDIO 10.5V AVR When Q16’base goes Hi, AVR outputs 10.5V.

Q17~19 Pre-Amp -9V AVR

-9V AVR (DC/DC IC) for 4.5V Pre-out

Motor driver IC for panel mechanism

Q18 and 19 works as a differential amplifier, Q17 works as a driver and -9.1V is supplied to OP amp for Pre-out.

KDC-9023R /PSW9524/X969

COMPONENTS DESCRIPTION

Ref. No. Application/Function Operation/Condition/Compatibility

Q20~22 Pre-Amp +9V AVR

Q23, 24 P-ANT SW When Q23’base goes Hi, P-ANT SW outputs 14V. Q25 Ex amp control buffer Q26 Small lamp det SW When Q26’base goes Hi, Q26 is turned on. Q27 BU det When Q27’base gose Hi, Q27 is turned on. Q29 ACC det When Q29’base gose Hi, Q29 is turned on. Q30, 31 Mute driver When a base gose Lo, mute driver is turned on. Q201 Noise buffer Q202 E-vol mute SW When a base gose Hi, mute SW is turned on. Q203~208 Pre-out mute SW When a base gose Hi, Pre-out is muted. Q210 AGC for SA Q303, 304 AM+B SW When Q303’base gose Hi, AM+B is out. Q305 Composite signal buffer for RDS Q501 E2P 5V SW When Q501’base gose Lo, E2P 5V is out. Q502, 503 PANEL 5V SW When Q503’base gose Hi, PANEL 5V is out. Q603 SW for IC20 When Q603’base gose Hi, Q603 is turned on.

Q20 and 22 works as a differential amplifier, Q21 works as a driver and +9.4V is supplied to OP amp for Pre-out.

● CD PLAYER UNIT (X32-5440-00)

Ref. No. Application/Function Operation/Condition/Compatibility

IC1 Audio 3.3V regulator IC2 Audio LPF IC4 BTL driver IC5 2.5V regulator IC6 3.3V regulator IC7 Mechanism control µ-com IC8 Level shift (3.3V→5V) IC9 WMA decoder IC10 WMA clock buffer

IC11

IC12 WMA chip schmitt trigger IC13 Data buffer DRAM Q1 A.8V SW When Q3 is on, Q1 is turned on. Q2 3.3V regulator SW When PON is on, Q2 is turned on. Q3 A.8V SW When PON is on, Q3 is turned on. Q4 APC (Auto Power Control) Q5 D.5V SW When PON is Lo, Q5 is turned on. D1 Pick-up laser diode protection D2 Dropped out diode

CD signal processor LSI + RF amplifier + MP3 decoder

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