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CD RECEIVER

KDC-2023 KDC-2024SA/SG/SYA/SYG KDC-2094YA/YG KDC-222/S KDC-3023
SERVICE MANUAL
CD mechanism operation description is not in this sarvice manual. Please, refer to sarvice manual X92-4030-0x (B51-7867-00).
Panel assy (A64-2867-02): KDC-222 (A64-2868-02): KDC-222S Escutcheon (B07-3060-02): KDC-222 (B07-3022-02): KDC-222S

© 2002-11 PRINTED IN JAPAN B53-0004-00 (N) 3379

CD mechanism extension cord : WO5-0618-00

Panel assy (A64-2870-02): KDC-2023 (A64-2873-02): KDC-3023

Escutcheon (B07-3001-02): KDC-2023 (B07-3022-02): KDC-3023

KDC-222
COMPACT DIGITALAUDIO

45Wx4
COMPACT DIGITAL AUDIO

KDC-XXXX

CD MD-Changer Control

50Wx4

CRSC LOUD SCAN RDM REP CLK ADJ AUTO AME LOUD SCAN RDM REP M. RDM CLK ADJ AUTO AME

CRSC

OFF

AUD

OFF

AUD

Panel assy (A64-2878-02): KDC-2024SA/SG/SYA/SYG

Escutcheon Panel assy (B07-3001-02): KDC-2024SA/SG/SYA/SYG (A64-2884-02): KDC-2094YA/YG

Escutcheon (B07-3001-02): KDC-2094YA/YG

KDC-2024S
COMPACT DIGITALAUDIO

45Wx4
COMPACT

KDC-2094

WIDE BAND

45Wx4

DIGITALAUDIO

MONO LOUD SCAN RDM REP CLK ADJ AUTO AME LOUD SCAN RDM REP CLK ADJ AUTO AME

MONO

OFF

AUD

OFF

AUD

DC cord (E30-4784-05)

DC cord(ISO) (E30-4790-05)

Mounting hardware assy (J21-9716-03)

Plastic cabinet assy (A02-1486-13)

Lever (D10-4589-04)x2

Antenna adaptor (T90-0523-05)

Screw set (N99-1719-05)

Screw set (N99-1610-15)

Depends on model. Refer to the parts list

TUNER OUT

1200mV

LCD

LCD DRIVER WITH KEY MATRIX

REMOCON

BACK LIGHT

KEY ILLUMI

2
FM+B Q502 A8V IC10 FM AGC OUT Q223,224

KDC-2023, 2024A/SG/SYA/SYG, 2094YA/YG, 222/S,3023

ANT

FM AGC
AM+B Q501

PRE MUTE

FM(J,K) : 1800mV FM(E) : 1372mV AM(J,K) : 600mV AM(E) : 855mV
IC4

CD : 3600mV CH : 3600mV

PRE OUT

AM AGC CD
SERVO A8V BU5V

AM AGC OUT

TUNER,MPX & E-VOL.

IC8

POWER IC
MUTE

MUTE LOGIC
Q10

SP OUT

AUDIO OUT 12EJE LO/S SCLK SDA 8EJE MUTE RST STOP LO/EJ MO LOE/LIM

1200mV

CH CD

BU DET
IC12

BACK UP

BLOCK DIAGRAM

IC6

EEP-ROM
BU5V IC11

Q20

RDS DECODER
IC1

ACC DET
IC7

ACC

RESET IC

POWER SUPPLY IC
P-CON P-ANT Q51,55

CHANGER
AUDIO OUT RST REQ C CLK DATA H CH-CON REQ H DATA C MUTE BACK UP BU5V IC2 SW5V

P-CON P-ANT

MI-COM

SERVO

SERVO

VCC SW1 SW2

Q50 SW5V

SW5V
BU5V FM+B AM+B A8V

BU5V FM+B AM+B AUDIO+B ILLUMI

KDC-2023, 2024A/SG/SYA/SYG, 2094YA/YG, 222/S,3023
COMPONENTS DESCRIPTION
q SWITCH UNIT (X16-1460-xx/2370-12)
Ref.No.
IC1 IC2 Q1

Application/Functions
LCD driver & key matrix Remote Sencer Key scan start

Operation/Condition/Compatibility

When Q1 base goes Lo, key scan start.

q ELECTRIC UNIT (X25-9600-xx/9612-7x)
Ref.No.
IC1 IC4 IC7 IC8 IC10 IC11 IC12 Q10 Q20 Q40 Q50 Q51 Q55 Q70 Q101 Q102 Q501 Q502

Application/Functions
System control µ-com Power amplifire Power supply (Multi AVR) MUTE Logic Tuner & E-Vol. Power on reset E2P-ROM B.U. detector A.C.C detector MUTE driver SW 5V SERBO AVR control SERBO AVR Surge detector DSI driver PANEL 5V SW AM RF amplifire FM RF amplifire System µ-com

Operation/Condition/Compatibility
E-Vol output encoder power amplification for speaker. When a pin 1, 2, or 13 is "H", MUTE turns on When a pin 3, 4, or 5 is "H", P-AMP mute turns ON. Changer is RESET when a pin 9, 10, or 11 is "L". FM/AM tuner & stereo decoder & E-Vol. When B.U. 5V voltage is less than 3.5V, power reset. Writing and read-out of adjustment data for a tuner BU on (base "H") : Collector "H" ACC ON (base : "H") : Collector "L" Base "L" : Mute on (collector "L") Base "L" : SW5V on Pin 2 "H" : Serbo on (pin 4 "H") Base "H" : Serbo on Base "H" : Surge detect Base "H" : DSI on Panel attch : PAN5V on Base "H" : Mute on Base "H" : Gain UP Gate "H" :Gain UP

Q223,224 MUTE

3

KDC-2023, 2024A/SG/SYA/SYG, 2094YA/YG, 222/S,3023
MICROCOMPUTER'S TERMINAL DESCRIPTION
q SYSTEM MICROCOMPUTER uPD780058GCxxx (X25 : IC1)
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Name TDF DET 8EJE SW NC Avss L-RST L-CE AVREF1 NC IC10-DATA IC10-CLK L-DATAL L-DATAS L-CLK R-DATA R-QUAL CH-DATAC CH-DATAH CH-CLK CH-REQH NC AFS I/O I I O Not used (out put L) H:Panel detached L:RESET 3 normal H , Power off L When 7seg model,output L H:Select (panel communication) When panel attached,output L Panel detection Description Processing Operation H:Panel detached L:Panel attached H:Eject is completed Except 8cm CD model:always output L

O O

LCD driver RESET LCD driver selection Not used (connected to 9pin) IC10,E2PROM data communication IC10,E2PROM clock communication Data input from the LCD driver Data output to the LCD driver Clock output to the LCD driver Data input from the RDS Quality input from the RDS Data input from the changer (new 5L) Data output to the changer (new 5L) Clock input/output with the Changer (new 5L) Request output to the changer (new 5L) Not used (output L)

I/O O I O O I I I O I/O O O O O O O I O I I I I I O I/O O O O O O O

3 non communication : H 3 non communication : H Non communication : H When panel detached : L 3 Pull down on X25 unit,Pull up on X16 unit When panel detached , output L When panel detached , output L Except RDS model : output L Except RDS model : output L Except changer model : output L When non communication ,last data keeping Except changer model : output L Check the old and new Except changer model : output L L:Requset Except changer model : output L

22-24 NC 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 CH-CONT TYPE REF SD NC TYPE2 TYPE1 TYPE0 TUNER-TYPE1 Vss1 TUNER-TYPE0 MUTE M-DATA M-CLK ADJ P-MUTE SVR P-STBY SW5V

H:Normal L:FM/AM seek and AF search Noise detection time constant switching terminal 3 (When tuner SRC auto zero , L) Not used (output L) H:Changer on L:Changer off Changer control Except changer model : output L 5V lines output for destination setting H:During destination reading Tuner SD input H:Station detected Not used (output L) Destination type selection terminal 2 Refer to destination type list. Destination type selection terminal 1 Refer to destination type list. Destination type selection terminal 0 Refer to destination type list. Destination available/genuine model rool off H:genuine model 1 L:available model Destination available/genuine model noise cancel H:genuine model 0 L:available model H:mute on L:mute off Mute (E.Vol,Preset) control Power off after that 15 second L Data input/output with the CD mechanism 3 non communication : H Clock output to the CD mechanism 3 non communication : H When adjustment = H Tuner lines adjustment PS1-0,1=L PS1-2,2-0,1=Hi-z IC10-DATA,CLK=Hi-z H:mute off L:mute on Power IC mute control Power off after that 15 second H H:When momentary power down detected Power IC servo control L:Nomal Power IC standby control H:Power IC ON L:Power IC OFF SW 5V control H:SW5V OFF L:SW5V ON Power off after that 10 second H

4

KDC-2023, 2024A/SG/SYA/SYG, 2094YA/YG, 222/S,3023
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Name 43 B.U-DET 44 ACC-DET 45 46 47 48 PS1-0 PS1-1 PS1-2 PS2-0 I/O I I O O O O Description Back up detection terminal ACC detection terminal Power supply IC SW1 control 0 Audio 8V,P-CON Power supply IC SW1 control 1 Audio 8V,P-CON Power supply IC SW1 control 2 P-ANT Power supply IC SW2 control 0 ILL,FM,AM Power supply IC SW2 control 1 ILL,FM,AM BEEP O O O I O I/O O O I I I I I I I DSI control Not used (out put L) Not used (out put L) CD mechanism down&limit detection CD mechanism loading motor control output CD mechanism loading/Eject switching terminal Stop output to the CD mechanism Reset output to the CD mechanism Mute input from the CD mechanism Reset input from the System microcomputer Remote control input RDS clock input Request input from the changer (new 5L) CD mechanism loading's switch detected Key input detected (11pin L connected to the DATA L) 12cm disc detected H:Light on L:Light off When panel attached,output L When panel detached,flashing at the panel (H/L) FIX model is output L Processing Operation H:power down L:B.U. on H:ACC OFF L:ACC ON
BA4911 SW1 PS1-2 PS1-1 PS1-0 L L L L L(H) H(L) L H H H H H BA4911 SW2
PS2-1 L L(H) H PS2-0 L H(L) H

Power supply IC output A8V P-CON P-ANT STANBY ON OFF OFF ON ON OFF ON ON ON

Power supply IC output
ILLUMI ON ON FM STANBY ON OFF AM OFF ON

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

PS2-1 BEEP DSI NC NC LOE/LIM SW MO SW LO/EJ M-STOP M-RST M-MUTE RESET REMO R-CLK CH-REQC LOS SW KEY-REQ 12EJE SW Vss0 VDD1 X2 X1 IC XT2 XT1 VDD0 AVREF0 S-METER NOISE PHONE NC AVCONT

O

H:Chucking detection L:Normal H:Loading,Eject,Break L:Play H:Eject L:Loading H:Play L:Stop H:Normal L:CD mechanism reset H:mute off L:mute on

Except RDS model : output L H:Changer detection L:Request Except Changer model : output L H:No disc L:DISK IN(Loading Start) H:Key no input L:Key input (edge key data reading start) L:12cm disc

3 MAIN X'tal oscillating circuit 3 MAIN X'tal oscillating circuit TEST Not used

3 4.19MHz X'tal connection 3 4.19MHz X'tal connection OPEN

I I I O O

VDD Connected to VDD A/D converter reference voltage control output, connection to the 80pin AVCONT S-meter input FM noise detection input 3 2.5V or greater:NAVI MUTE 2way mute 1.0V or less:TEL MUTE Except phone mute model : output L Not used (out put L) H:During A/D converter active A/D converter standard voltage control output same timing with PON

5

KDC-2023, 2024A/SG/SYA/SYG, 2094YA/YG, 222/S,3023
MICROCOMPUTER'S TERMINAL DESCRIPTION
q MECHANISM MICROCOMPUTER MN6627771KP (X32 : IC2)
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 Name TVD SPL PC PWM TBAL FBAL NRFDET OFT BDO LDON DSLB DVDD1 DVSS1 AVSS2 DSLF ARF RFSW PLLF PLLF2 IREF RFENV TRCRS TE FE AVDD2 AVSS1 OUTR AVDD1 OUTL DVSS3 CSEL NC ASEL MSEL0 MSEL1 ICRST BCLK LRCK SRDATA VREFP HOT 8EJE_SW 12EJE/SDET_SW LOE/LIM_SW PCK EFM SENSE CLVS DEMPH DVDD2 X1 I/O O O O O O O I I I O O I/O I I I/O I/O I I I I I O O I O I I I O O O O I I I I I O O O O O I Description Traverse driver output (PWM output) Spindle motor drive output (PWM output) Spindle motor ON output multi-purpose PWM output Tracking balance adjust output (PWM output) Focus balance adjust output (PWM output) RF detection signal input Off-track signal input Drop out signal input Laser on signal output H:ON DSL balance output Power supply for digital circuit Ground lines for digital circuit Ground lines for analog circuit Loop filter terminal for DSL RF signal input When DSL circuit,constant switch terminal Loop filter terminal for PLL Loop filter characteristic switching terminal for PLL Standard voltage input terminal RF envelope signal input Track cross signal input Tracking error signal input Focusing error signal input Power supply for analog circuit Ground lines for analog circuit Rch audio output Power supply for analog circuit Lch audio output Ground lines for digital circuit Oscillation frequency specification terminal Not used Audio output polarity switching terminal Destination type selection port (set 2bit) Destination type selection port (set 2bit) Reset control terminal for external DAC Bit clock output for serial data L/R identification signal output Sirial data output A/D converter standard power supply input Temperature protection detection terminal (AD input) 8cm disc eject stop detection terminal Judge the 8cm or 12cm disc Pick-up inside detected PLL extracted clock output,etc EFM signal output,etc Optics servo status signal output,etc Spindle servo phase synchronous signal output,etc Dephase detection signal output,etc Power supply for digital circuit Main clock input terminal Processing Operation

L:ON H:OFF (default ) It's possible to setup the TOSF2

L:detected H:detected H:detected When command FO on,LDON is H

For DSL,PLL and AD The bias of ARF output terminal in one

Analog input Analog input Analog input Analog input For DSL,PLL and AD For audio output (Lch and Rch in one) For audio output (Lch and Rch in one)

H:33.8488MHz L:16.9344MHz L:Reverse H:Non reverse Order "MSEL 0" and "MSEL 1" Set up Order "MSEL 0" and "MSEL 1" Set up

Over C5(h):on H:Stop 12cm disc stop detection terminal Loading end detection terminal

L:Normal operation H:Luff servo H:on

6

KDC-2023, 2024A/SG/SYA/SYG, 2094YA/YG, 222/S,3023
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 Name X2 DVSS2 XSUB1 XSUB2 TEST1 TEST2 NC VER/HOR DRV_MUTE /MUTE_L /MUTE_R /RST OCD_CLK /MSTOP DATA SBIO /CLK TX EQCNT XSEL MCNT P-ON MOTOR LO/EJ CD-RW LDCNT DVDD3 FOD TRD I/O O I O I I O O O O O I I I I/O I I/O O O I I O O O O O O O Description Main clock output terminal Ground lines for digital circuit When external DAC,external clock input terminal Test port 1 Test port 2 Not used Put length or breadth switching motor terminal Driver mute control terminal Audio Lch MUTE output Audio Rch MUTE output LSI reset input terminal When OCD connected, clock input Standby detection terminal I2C bus data line (communication line with system computer) When connected to serial writer,data input terminal I2C bus clock line (communication line with system computer) Digital audio interface signal output RF EQ switching terminal During the external DAC connection CD mecha Loading/Eject control ON/OFF Audio and servo origin power control terminal Loading/Eject control switching terminal Loading/Eject control terminal or output L CD-RW control terminal LD control terminal Power supply for digital circuit Focus driver output (PWM output) Tracking driver output (PWM output) Processing Operation

Normal operation is H fixed Normal operation is H fixed H:Put length L:Put breadth L:MUTE ON H:MUTE OFF L:MUTE L:MUTE H:Normal L:Reset H:Normal L:Mecha stop At that time serial writer connected At that time serial writer connected L:x2 times H:x1 times MCLK external input (H:input) L:OFF (HOST control) H:mechanism control L:power on H:power off At that time LO/EJ is "H" When 72pin (P82) is "L",output "L" H:CD-RW L:normal Operation is same LDON as timing

System mi-com Destination type list TYPE2 TYPE1 L L L L uPD780058GC499 L H L H L L uPD780058GC501 L H H L L L L H uPD780058GC502 H L H L uPD780058GC503 L L H: R135 R137 L: R136 R138

TYPE0 L H L H H H H L H L H L R139 R140

MODEL NAME KDC-2024SA/SYA, 2024SG/SYG KDC-2022, 2022V,202MR RY-391CD, RX-491CD KDC-4023, 2023, 3023 KDC-122, 122S KDC-1023, 1023S KDC-222, 222S KDC-3024G/YG, 307G/YG KDC-3023R KDC-3024A/YA, 307A/YA KDC-4024/Y/V/YV KDC-2094YA/YG

7

A

B

C

D

E

CD PLAYER UNIT (X32-5380-00)

1
C101 1000P C102 1000P C33 0.1

D.GND
4.80V
R93 100K

C34 0.1 29 28 C32 0.1 27 27 26 73 AVDD1 AVSS1 P-ON OUTR MCNT

Rch
27

Lch
29

BU+5V
34 33 32 31 40 39 38 37 36 35 VREFP MSEL1 MSEL0 ASEL NC ICRST LRCK BCLK SRDATA

30

CSEL

OUTL

29

R82

R86

R85 330

330

2

R88

R87 100

100

DTC114YUA DTC143TUA UN5111 2SA1036K 2SA1362 2SA1576A

R81 330

330

0V
R100 C100 10 1000P R42 4.7K

41 42 43 44 45 46 47 48 49

C72 2200P

C71 2200P

HOT 8EJE(SW2) 12EJE/SDET(SW3) LOE/LIM(SW4)

4.80V

2.40V

4.80V

C70 2200P

C69 2200P

PCK/NTLOCK/FCLK/STLD EFM/NFLOCK/CLDCK/STCK SENSE/RESY/FLAG/STOUT CLVS/VDET/CRC DEMPH/TRCRSO/TEXTCRC DVDD3 X1

C76 6800P

C75 6800P

4.80V

50 51

3.0pp 5.0pp

IC2
CD SIGNAL PROCESS BULT-IN MI-COM

R

L

52 X1 16.934MHz 53 54 55 56 57 58 59

X2 DVSS2 XSUB1 XSUB2 TEST1 TEST2 NC VER/HOR MOTOR 75 DRV MUTE IFZL MSTOP EQCNT

3

2SC4081
A+5V A.GND

0V 4.80V 4.80V

4.80V
IFZR RST

OCD CLK

4.80V

60

61

71

62

68

69

63

65

66

70

72

XSEL

SBIO

DATA

CLK

TX

64

67

62 4.90V 0V 4.90V 0-4.9V

0-4.9V 0V

C46 0.1

63

65

66

CP5 100Kx4

CN2
D.OUT 22

0V

68

4

C47 0.1

DTA114EUA DTA124EUA DTC124EU

SBIO

S2
R44 10K 12EJE SW 21

4.90V

12EJE SW S1
LOS SW 20

Q2 D.5V SW

4.90V

LOS SW
CLK 19 CP1 100x2 66 68

5

DAN202U

DATA 18

0-4.9V
8EJE SW 17

S4
8EJE SW D2

4.90V

to MAIN UNIT

NC 16 BU+5V 15 D.GND 14

4.90V 0V

R72

200

CP2 100x4

Q3,4
22K

Q3
22K

6

DA204U DTA114YUA

4.90V 4.90V MUTE L 12 4.90V MRST 11 4.90V MSTOP 10 7.80V A.+8V 9 3.84V Lch 8 0V A.GND 7 3.84V Rch 6 0V LO/EJ 5 0V MOTOR 4 7.80V S.7.5V 3 0V S.GND 2 4.90V LOE/LIM SW 1
MUTE R 13

62 61 63 65

Q4

A.8V SW

4.7K 10K

S3

A.+8V
L R 5 4

A.GND

DOWN&LIMIT SWITICH

MA142WK UN5212
7

3SK126

BR24C01AF-W

C36 2.2

0V 0V 0.15V
R43 1K

61

0V

74

AVDD2

DVSS3

25

0V 2.50V 4.90V 2.50V 0V 4.80V

F

G

H

I

J

RFENV

ARF 0.033

C2 2.2

1
IOP+ R4 10 IOP-

C10

C12 3300P

C11 6800P

C9 4700P

23 A/TE

22 TRCRS 2.40V

27

FE 24

C3 1 NRFDET

R7 3.6K C7 0.1 R6 3.3K C5 2P 39P C8 1 C6 RF C1 10u6.3 + R14 100K

Q1

4.90V 2.50V 0V 4.80V

2.45V

2.40V

BDO

OFT

7

8

9

R41 47K 16 0V C45 0.1 C44 1000P IREF PLLF2 PLLF 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 C43 2200P R40 820 R39 100K C42 0.047

27

26

25

24

23

28

22

21

3.3K

R5

11 4.16V

13 3.94V

10 2.50V

AVDD1

AVSS1

3.38V

1.44V

4 2.47V

3 4.90V

2 3.81V

12 0V

1 0.17V

FE

TE

TRCRS

OUTR

RFENV

AVDD2

APC D1

15 0V

14 0V

9

8

7

RFIN

RFN

LD

GND

BDO

COFTR

CBDO

OFTR

NRFDET

RFOUT

3TOUT

CAGC

VCC

CEA

ARF

PD

2.40V

1.25V 1.70V 0V

IC1

6

5

0.95pp 2.50V
TEOUT FEOUT TEBPF

2
R15 4.7K

0.87pp

RFSW ARF DSLF AVSS2

C41 1000P VDET VREF

0.91pp
GCTL FBAL TBAL TEN FEN

2.45V 0V
C31 0.1

D

C CD

E

4.80V

DVSS1 DVDD1

C2
L PROCESSOR -COM

0-4.8V
DSLB

R38 220K

C40 0.015

VDET 2200P

R3 5.6K

R12 240K

0V

LDON BDO

9 8 R37 6.2K 7 6 5 4 CP4 4.7Kx4

R9 3.9K

GCTL

OFT 2.40V NRFDET FBAL TBAL PWM

C14 4700P 22

R36 10K

R35 39K 24

910K

R13

4.80V

R10 100K

C13 270P

C16 330P

R2 5.6K

2.50V

B/TE C15

R8 27K

R11 33K

E

4 C17 0.1 C18 0.1

B

A

6

5

F

2.50V 28 29 2.69V 30 2.69V 31 2.69V 32

21

22

2.50V 25

2.50V 26

18

19

20

17

23

2.50V 27

3.06V 24

B

A

F

2.00V

23 C39 0.01

Vref

IC1

4.80V 2.50V 0V
R1 91

CN1
1 VCC 2 VC 3 GND 4 LD 5 VR 6 7 8 9 PD C+D E A

3

2.35V
MOTOR CD-RW LDCNT DVDD2 MCNT LO/EJ XSEL P-ON

PC SPL TVD

3 2 1 CP3 2 1

RF AMPLIFIER ADAPTED FOR CD-RW D3
R53 4.7K 1.8Kx4 R52 4.7K

2.40V
FOD TRD

2.40V
C48 6800P C50

0V 0V 0.15V

4.80V

0V

D.5V
Q5,6

Q6

Q5

VREF BUFFER
C52 0.1 R45 10K

79

80

6800P

0V 0.17V 2.69V CD 2.50V E 2.69V A 2.69V B 2.69V F 2.50V 3.84V 14 3.81V 16 3.81V 15 3.84V 13

10 B 11 F 12 GND 13 FCS+ 14 TRK+ 15 TRK16 FCS-

R46 27K

R49 39K

to PICKUP

71

72

75

76

78

79

73

74

77

80

4

D.GND

S.GND
R43 1K 80

TRK
R51 10K

SLED
18 17 R32 10K C37 0.01 25 2.35V 5 4 TRK IN 16 15

1

SLED OUT /LOAD 18 17 SLED IN /EJECT

IC1 : AN22002AA IC2 : MN6627771KP IC3 : BA5824FP DM2 (X92- ) M Q1 : MCH6101 Q2 : 2SA1362(Y) Q3 : DTC124EUA or UN5212 Q4 : DTA143XUA Q5 : 2SC4081 Q6 : 2SA1576A D1 : DAN202U D2 : MA8051-L D3 : DA204U

R50 3.9K

R31 27K

R71

C51 1500P 28 2.35V 27 2.35V 29 2.35V 26 2.35V 30 7.80V

13K

0V 0V 7.80V 3.60V 3.60V 3.81V 3.81V

LOADING & SLED MOTOR

5

24 0V

TRK OUT

23

22

21

20

19

18

PREVCC

INSL+

OUT3

INSL-

OUTSL

LDIN

IN3-

CNT

POW GND2

VO4-

VO4+

VO3-

4CH BTL DRIVER

POW VCC2

VO3+

IC3

17

16

2.45V 6 OUT1 7 PREGND 8 4.90V 9 MUTE 0V 10 POW GND1

OUT2

7.80V 11 POW VCC1 3.50V 12 VO13.90V 13 VO1+ 3.84V 14 VO23.84V 15 VO2+

BIAS

2.35V 4 IN1+ 2.35V 5 IN1-

IN2-

SIGNAL LINE GND LINE B LINE
X32-5380-00 X32-5380-01 14 13 S4 NO YES

1

2.35V 2

2.35V

2.40V 3

FCS UP

FCS
79

C49 1500P R47 2.2K R33 18K R48

C38 0.01

SPDL11 12

DM1 (X92- ) M

6

11

12

10K

SPDL

2

R34 10K

C61 2.2

FCS DOWN

S.7.5V

SPDL+

SPINDLE MOTOR

CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list). ! Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer. · DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual instruments or/and units.

7

K

L

M

N

O

J4 TOP VIEW

CLK DATA H 11 13 REQ C DATA C 10 9

Lch 12

Rch CHCON 4 8 RST 7

BUP D GND 3 2 REQ H 1

D
J5

REAR

1
(X25-9600-xx/9612-7x)

A GND 6

MUTE 5

J4
D GND 1 2 3 4 MUTE A GND 5 6 7 8 9 R231 100

C227
680P

C228
680P 41 R232

10 13 11 12

W160

R227 30K

R228 30K

C255 1u50 +

100

BU REQ H CH CON

R407 4.7K RST 8 R409 4.7K DATA C 16 C401 1u50 R401 10 Lch + R410 100 DATA H 17

REQ C

CLK

+ OUT1FRAMMIX2OUT 67 3 GND

Q223
4.7K

Q224
4.7K

C256
14.4V 0V
VCC1 PGND2 PGND1 W156 STBY

C223 R223 10u16 270 +

C224 10u16 R224 + 270

Rch

W516

R405 4.7K

R406 4.7K

R408 4.7K

R404 100

R411 100

R403 4.7

R402 10

2

WH1
5

1 C403 100u10 + C402 1u50 +

D404

4 3 2 1

D405

D410

D403

D402

D407

D408

D401

D409

Q40
22K 22K

1

3

5

OUT2+

OUT2-

25

19

18

63

TAB

45

46

44

0V

7.3V

D268

C
J1
L501 R501 6.8K L502 33uH 10P C502 1500P

W161
C504 0.01 L504

C252 0.22u50 C253 0.22u50 RR RL

W407 R252
4.7K

D3

6.8uH

Q501 AM RF AMPLIFIRE
C509 R502 2.2K R503 R506 2.2K C508 22u10 + 1M

100uH

3

W408 R253
4.7K

C516

3

C505 4.7u16 +

C503

0.1

C524

R507 1K

68P

L4

C510 100P

R521

100K

W521

C506 0.1

GND

7 6 CF51 10.700MHz C585 W509 0.01 L511 4.7uH CF54 450kHz OUT 2 IN

W400

C525

R505 1K

L503 1mH

0.01

C522
D503

C529
2P

C507 33u10 +

L513 W601 4.7uH L512

10.700MHz

C534

0.01

R581

4.7uH C511 0.01 8

W511

CF52

L505

C583 0.1

1K

C591 33u10 +

FR FL

12

D501

C536

R523 100K

C521

73 C582

8.0V 8.0V

8.0V

3.5V

8.0V

0.1

4.0V

4.2V 4.2V

C526

C530

L510 4.7uH

C581

FM RF AMPLIFIRE

L506

L508 W508

C580 0.01

Q502

CF53 10.700MHz

80

79

78

77

76

75

74

72

71

69

AMMIX2IN1

MIX1OUT1

R522

C523

100K

C531 1

13

W533 C533 0.01 W415 W504 R525 R527 100K 330 R528 100K

W401

R524

C528

100K

W500

D505
15 C512 4.7u16 + 3 C513 0.01 C514 0.01 C515 1

330

AM FM FM AM
VREF5V TUNGND AMMIX1IN+ AMMIX1INANAGC1TC ANAGC1OUT ANAGC1VOUT FMMIX1IN1 RFGND FMMIX1IN2 FMAGC1OUT FMAGCIN FMAGCVOUT AM PW-ON FMANTADJ FMRFADJ OSCGND VCOE VCOB OSCVCC

C544 C543 15P 68P

W505

5.0V 0V

1 2 3 4 5

3.3V 2.0V 0V 4.2V 3.3V 0V 2.4V 0V

FMIFAMP1OUT

6P

FMIFAMPREF

14

FMAMP2OUT

FMIFAMP1IN

11

FMIFAMP2IN

AMMIX2IN2

MIX1OUT2

IF1GND

IFVCC

FMNAGCIN

TUNVCC

12

70

68

4

D504

C535 2P

R526 W524 R529

0V

10

L509

1

RR+

RR-

D411

FM AM FM 3.2V 2.0V 0V

2.0V 0V

AM FM AM

C541

W507

AM AM PW-ON AM

17

D506
R543 5.6K

L507
6800P C545

C542 22P R544 2.2K

18

6 7

60mV

6 7

4.1V 3.2V 0V 3.4V 0V

5

20

8

C537
0V

8 9 10

IC10
FM 2.0V 0V

MPX BUFFER

NOISE BUFFER
R541 1K R542 4.7K

E
R204 1K 20 R205 4.7K W512

10 11 12 13 14 15 W531

C538

TUNER & E-VOL.

0V 11 0.7V 12 8.0V 13
W523 14 15

CN3
2 C352 330P

Q503

Q201

4.2V 2.8V 0V

R173

1K

0V 16
R547 22 3.2V 17

W402
51 77

W403

57

61

17 18

3.8V 18
L517 8.0V 19

1

3.4V 0V 2.4V 0.8V
PLLGND 27 XTALD 0V 28 DIGGND PLLVCC LFREF XTALG LFHC

4.8V 3.4V 8.0V 29 DIGVCC 30 TUNQUALITY 31 ISSTC C554 0.1 3.2V 32 DEVTC

C600 100u10 +

C555 1000P

5.0V 0V
15 14 R351 2.2K 1

IC6
QUAL RDDA

2.5V 22

R546 33K 2.5V 23

8.0V 25

6
C351 10u6.3 +

5.0V 0V 2.4V 3

RDCL T57 OSCOUT

15 14 X2 13

2.2K C356 10P C355

0V 24

26

16

2.5V 21

R352 2.2K 2

5.0V 0V
R353

LFOUT

LFIN

C546 0.01

W534

62

4.7uH

20

X501 4.7uH 10.250MHz

L514

VREF OSCIN

C551

C353 10u6.3 +

0V

6 7

EXTRES GND TM FSEL

10 0V 9

C550 0.033

C557

C558
0.01

0.01

ARI RDS 8 FILOUT DECODER W530

0V

7

L515 4.7uH

VCC

11 0V

2200P

C354 0.01

C549

12 5.0V

0.01

2.4V 4 MPX 5 5.0V OSEL

C547 10u10 + C548 0.022

4.332MHz 10P

R545 4.3K

C593 1

C553

C552 0.01

D264

8.0V

D265

MUTE DRIVER

7.4V

7.3V

7

SVR

MUTE

IC4

10 7.2V

2

4

0V 4.9V

6

8

R2

6

P

Q

R

S

T

J2 2
1 REAR Lch+ FRONT Lch+

4 3 FRONT LchREAR Lch47K

6 5 FRONT Rch-

40

50

39

35

E2P-ROM

C254 0.22u50 W162

R263

RL+

FL+

C257 1u50 +

R257

6.2K

C251 0.22u50

C256

R260

750

W158

1 2 3

+

D253

D251

10K

A0 A1 A2 GND

WP

7

W406 R254

W405 R251

R256

4.7K

4.7K

1K

C258 16 7.3V 1u50 ACGND 23 + OUT4- PGND3 18 0V 25 20 14.4V HSD VCC2

D252 R258

SCL

6

5V 0V 5V 0V
ADA

ACL SCL

D20 33K

R21

47K

TH1 470

VCC

8

5.0V 0V

1/2W

SURGE DETECTOR Q70 D70
R72 36K R71 82K

R22 R73 100K 10K

0V

4

Q20
SDA 10K

3.4V or 22 4.1V

14.4V 0V

14 7.2V

12 7.2V

10 7.2V

SDA 24 0V

5

R564 10K

R563

R30

0.01 R11

6

8

VCC1

PGND1

MUTE

SVR

IN2

PGND4

IN4

A. C. C DETECTOR
5.0V 0V 0V 0V
12 11 10 9 8 R201 47K

10K

10K

C21

TEL MUTE

C30 0.01

D30 Q10 B. U. DETECTOR

A
R31

OUT2+

OUT1+

OUT3+

OUT4+

OUT1-

OUT3-

SGND

5.0V
14

IN1

IN3

D40

11

21

VCC

IC8
MUTE LOGIC

13

15

17

19

C40 0.01

7.2V 0V 7.2V 7.3V

7.4V

7.3V

7.4V

7.2V

7.3V

7.4V

R23 100K

R12 100K W532

D268

D264

D265

D262

D266

D263

D261

RR+

D267

F

FR+

RL+

FL+

FR-

1

2

3

5

4

6

RL-

FL-

0V

R415

C404

1

8 12

100K

0.01

5.0V 0V

0V

0V

7

POWER AMPLIFIRE

GND

L101 C586 0.1

C587

C588

0.47

GND

OUT

W510

C589

D101

59

58

56

55

57

0.1 Q252,253

R255 33K

R68 10K

R122 100

R125 1K

SMETERRC & MPTHTC SW
C584 10u10 +

VDD

Q253
4.4V

VSS VOUT

IC11

R67 10K

R69 10K

5.0V
2 1

0V

CP3 1Kx2

CP2 2.2Kx2

R264 47K

R123 1K

R126 100K

54

50

41

C590

1

2

3

Q252

IN

0.1

C102 0.01

0.01

C101 100u6.3 + C103 0.1

CF54 450kHz

C592

4.7uH

R32

5

7

9

22K

13

CP1 10Kx2

57

56

55

54

53

52

60

59

58

51

50

49

48

47

46

45

44

43

42

NC

PS2-1

LO/EJ

BEEP

M-MUTE

PS2-0

PS1-2

PS1-1

DSI

CD-SW3

PS1-0

N.C

N.C

SW5V

M-STOP

ACC-DET

B.U-DET

P-STBY

RESET

M-RST

MOSW

67

66

65

64

63

62

61

41

509

POWER ON RESET
0V 5.0V 0V
R127 2.2K 61 62

0V

60

SV

3

AMIF2AMPIN

SMETERC

FMDEM AMIF2AMP REF

DEMGND

AMMIX2OUT

FMDEMREF

AMAGC2TC

8.0V

4

TUNER CHANGE FM AM FM

5V 0V 4.2V 2.4V 0V

MPTHTC RDSMUTE AUDIOMUTE QUALITY

60 59 58 57 W519 W517 R567 1K R566 1K 55 64 SCL 66 59 57 63 61 61 62

REMO R-CLK CH-REQC

V

AM FM AM

1.4V 1.2V 0V 3.7V 0V FM FM

5.0V 0V 5.0V 0V 5.0V 0V 5.0V 0V

5.0V 0V 5.0V 0V

0V or 5.0V 5.0V 0V 5.0V 0V or 0V

P-MUT 5.0V 0V N.

R128 2.2M

CL

5.0V 0V 2.6V 0V

56 4.0V SMETER 55 0V SD 5V 0V 54 5V SCL 0V 53 SDA

R414 100K
R129 2.2K

63

5.0V 0V

5.0V 0V

DATA

64 65

CD-SW1 KEY-REQ

5.0V 0V

R130 2.2K

SDA R565 100K C563 0.47u50 3.9V + C564 0.47 R561 2.7K C104 15P 51 C105 15P

AM PW-ON

IC10
TUNER & E-VOL.

3.0V 1.9V 52 0V FMMUTETC 51 TUNEROUT
50 49

3.0V TUNERIN
IN1L

C568

3.0V

D202 D201

C205 2.2u50 49 + R132 2.2K C204 2.2u50 47 + R133 12K

3.0V

IN1COM

C565 48 47u10 + 47 46 45 44 43 42 41

66 CD-SW2 0V 67 Vss0 5.0V 68 VDD1 R131 69 X2 6.8K X1 4.194MHz 70 X1 0V 71 IC 72 XT2 73 5.0V XT1 74 VDD0 75 AVREF0 76 S-METER 0-4.0V

MUT 5.0V 0V TUNER-TYPE

0V or 5.0V

IC1
SYSTEM CONTROL u-COM

Vss

TUNER-TYPE

TYPE

0V or 5.0V 5.0V 0V 5.0V 0V 5.0V 0V 5.0V 0V 5.0V 0V
L-DATAS L-DATAL AVREF1 R-QUAL R-DATA L-CLK L-CE

TYPE

IN1R

3.0V 3.0V 3.0V 3.0V 3.0V 3.0V 3.0V

4.8V 3.4V 8.0V 29 DIGVCC 30 TUNQUALITY C553 31 ISSTC C554 0.1 3.2V 32 DEVTC C561 1u50 3.0V 33 VREF3V + 0V 34 APGND

IN2R IN2COM IN2L OUTRR APVCC OUTFR OUTRL OUTFL ACLOUT ACRIN ACLIN ACROUT

46 45 44 77

C106 R134
2.2K

5.0V 0V 5.0V 0V 5.0V 0V 5.0V 0V
CH-DATAH CH-DATAC CH-REQH CH-CLK

TYPE

N.

2.2-4.5V 0.6-4.1V 5.0V 0V

77 78 79 80

W578

NOISE PHONE PANEL AVCONT 8EJE SW N.C

5.0V 0V 5.0V 0V

TYPE RE

CH-CO

N.

N. N.C

L-RST

AVSS

N.

ADA

ACL

N.C

N.C

AF

35

36

38

39

R121 2.2K 12

10

R107 2.2K 13

15

16

18

19

14

5.0V

R106 100K

R103 1K

R104 1K

SDA

SCL

11

12

L516 4.7uH

13

1

2

5

6

593 1

14

15

C562 10u10 +

R413 100K

RR

FR

RL

FL

552 .01

R105 470

C556 1000P

3.9V 3.9V 3.9V 3.9V

3.0V

0V

R102

1K

16

17

18

L515 4.7uH

17

19

C560 100P

20

W501

11

1

2

3

5

6

8

4

7

9

8.0V

37

40

25

FR-

RL-

FL-

+

Q251

W409 R261

IC12

R20 3.3K

R10 30K

D10

D



5 0

S

U

V

W

X
WHT FRONT L WHT/BLK GRY/BLK FRONT R ANT. CONT P. CONT OUT ACC GND GRY BLU BLU/WHT RED BLK GRN GRN/BLK VIOL/BLK VIOL REAR R REAR L

Y

8 9 7 10 6 11 5 12 4 13 3 14 2 15 1 16

2 1 REAR Lch+

4 3 REAR LchFRONT Lch-

6 5 REAR RchFRONT Rch-

8 7 REAR Rch+ FRONT Rch+

10 9 P-ANT

12 11 P-CON

14 13 ACC

16 15 GND

FUSE

SIGNAL LINE GND LINE B LINE POWER SUPPLY (MULTI AVR)
0V
1 4.7K

1

IC7
GND

L1 140uH

D14

RR+

GND

D13
C51

C50 10u25 +

FR+

RL+

RR-

FL+

FR-

RL-

R28

FL-

IC1 IC4 IC6 IC7 IC8 IC10 IC11 IC12

: : : : : : : :



B.U.

14.0V

2

P-CON

TDA7479AD BA4911-V4 HD74HC27FP TDA7513 PST3435UL BR24C01AF-W or M24C01-WMN6T or S-24CS02AFJ-TB

YEL

BU

R25

D12

D11

W410

10u25 +

4.7K

TEL MUTE
1

0

C52 10u16 +

FM+B

7.9V

5

Q51

0

A
1.5K R57

SERVO AVR CONTROL SERVO AVR Q55
C63 22u16 +

C53 10u16 + C54 10u16 + C1 3300u16 +

AM+B

RL+ FLFL+ FRFR+ RRRR+ 7 8 5 6 3 4 1 2 P.CON B

RL-

14.0V 8.1V

3 4

P-ANT

8.1V

6

AUDIO+B

R32 22K

L2 27uH

ACC

R31
47K

14.3V
C58 100u16 +

7

Q10,20,70,101,201,503 : 2SC4081 : DTA124EUA Q40 : 2SA1036K Q50 : UMC2N Q51,53 : 2SD2375 Q55 Q102 : DTA114YUA Q223,224 : DTC143TUA : DTC114YUA Q251 : UMG4N Q252 : UMA1N Q253 Q501 : CPH5905 Q502 : 3SK126 : S2V20A or 1N5393G-M6 : IMSA-6801 D3 D10,20,70,201,202,401, : MA4068(N)-M 402 : D1F60 D11,13 : AM01Z D12,14 D40,101,251-253 : 1SS133 : DAN202U D50 : MA4082(N)-L D51 : DA204U D103 D106,108,109,403-405, 407-410 : MA4062-L D110 : HZS12A2 D411 : MA3062WA D501,503 : RN739F D504-506 : D1

DC CORD (E30-4784-05) KDC-222/222S/2023/3023

2

7 8 GND

5 6 B.UP

3 4

1 A 2

VCC

D1

D51

5.0V
C55 10u25 + C57 220u16 +

8

BU5V

W532 R51 47K

Q50
R50

5.6K

SW 5V

D50

C56 10u50 +

VBU 7 5 3 1 10 SW1 VDD 4 3 1 11 SW2 10.3V 12 ILLUM

5.0V

9

VDD

YEL

16 1 15 2

BLK RED BLU/WHT BLU/WHT

TEL MUTE

BRN

14 3 13 4

3
ANT. CON P. CON FR+ FRFLFL+

Q53

RR+ RRRLRL+ R145 54 2.2K

VIOL VIOL/BLK GRN/BLK GRN

12 5 11 6 10 7 9 8

GRY GRY/BLK WHT/BLK WHT

CN1
22 SW3 21 SERBOGND 20 SERBO+B

D102
R264 47K

R101 240

R255 33K

B
5.0V 0V
40 39

Q101 DSI DRIVER
5.0V 0V
R259 22K 40

55 56 47 49 57 58 R144 100K 59

19 MO SW 18 LO/EJ 17 Rch 16 GND 15 Lch 14 AUDIO+B 13 M STOP 12 M RST 11 N.C 10 M MUTE 9 8 D GND BU 5V N.C MECHDET

(X25-96XX-XX)
MODEL NAME KDC-222 (K) KDC-222S (K) KDC-2023 (M) KDC-3023 (M) KDC-2024SA (E) KDC-2024SG (E) KDC-2024SYA (E) KDC-2024SYG (E) KDC-2094YA (E) KDC-2094YG (E) UNIT No. 00-12 00-22

DC CORD (E30-4790) KDC-2024SA/SG/SYA/SYG KDC-2094YA/YG
A E
NO NO

41

B D
YES YES

C F
NO YES

C51, C106 404 NO 1500P YES 1500P

C227, 228 NO NO

C256 100u50 33u50

C521 C522 C523 C524 0.1 0.1 33P 33P 27P 100P 27P 100P

41

P-STBY

SVR

4

39 P-MUTE 5.0V R108 ADJ R174 0V 47K 38 2.2K N.C 37 R117 37 CLK 1K R118 10K 5.0V 36 R115 36 DATA 0V 1K R116 10K 35 35 MUTE R119 47K 5.0V 0V R112 0.1 34 TUNER-TYPE0 2W 0V or 5.0V R114 47K Vss1 TUNER-TYPE1 33 0V 32

to MECHA

12-75

NO

YES

NO

NO 1000P

YES

100u50

0.1

33P

27P 100P

12-74

NO

YES

NO

NO 1000P

YES

100u50

0.1

39P CF52, 53

15P

100P

R142

4.7K

7 6

UNIT C537, C528, C529,557, C526 C530 C536 C541 C553 C568 C581 C587 589 558,590,592 538 No. 00-12 00-22 5P 5P YES YES NO NO 4P 4P 4P 4P 8P 8P 4P 4P 0.01 0.01 820P 820P 2P 2P

CN3

2 36 37 64 66

0.01 L72-0781-05 NO 0.01 L72-0781-05 NO

W165

5 MSDA 4 MSCLK 3 SW1 12-75 2 SW2 1 D OUT 12-74 NO YES NO 8P 2P 10P 1P 0.047 820P 2P 0.01 L72-0716-05 NO 5P YES NO 4P 4P 8P 4P 0.047 820P 2P 0.01 L72-0716-05 NO

R141 4.7K R143 4.7K

R111 0.1
C142 0.1 2W R113 47K

D103

TYPE0

31

or 5.0V
TYPE1 30

V

TYPE2 N.C SD TYPE REF CH-CON N.C CH-REQH N.C N.C N.C AFS

29 28 27 R110 4.7K 26 25 24 23 22 21 R58 470

0V

R139 47K R140 47K R137 47K R138 47K R135 47K R136 47K
55

D110
W404
R163 10

J3
1 D-GND 2 PAN5V 3 ILL-GND 4 LAMP+B 5 LED+B R169 1K

UNIT D11, D13,14, D108 D109 D504-506 12 106,110 No. 00-12 NO 00-22 YES YES YES NO YES NO NO

IC1

IC4

J3

L505

5

KV1720S UPD780058GC501 TDA7386 E58-0879-05 L31-0967-05 KV1720S UPD780058GC499 TDA7560 E58-0879-05 L31-0967-05

Q102
47K

PANEL5V SW
60 5 11

10K

12-75 YES

YES

NO

NO

KV1720S UPD780058GC499 TDA7386 E58-0879-05 L31-0967-05

R168 1K
R167 100

6 7 8

RST L-RES L-DATAL

12-74 YES UNIT No.

YES

NO

NO

KV1735S UPD780058GC503 TDA7386 E58-0879-05 L31-0968-05 Q40, Q252, R25, R28, R31, R67,137,170, R102,111,112,134, Q53 Q251 102 253 136 521 32,140 171,412-414 142,168,173,529 NO YES NO NO NO NO YES NO NO NO YES NO NO

5.0V

D109

D106

X16J1 2/2

L506

L507

00-12 L31-0970-05 L32-0933-05 YES

6 59 13 12 61 1

R166 1K R165 470 R164 470

00-22 L31-0970-05 L32-0933-05 YES YES

YES YES

9

L-CE

A
12-75 L31-0970-05 L32-0933-05 YES NO YES NO YES YES YES NO NO

10 L-CLK 11 L-DATAS 12 REMO 13 SW5V 14 PANEL 15 ESD-G

5.0V 0V

R412 100K

R170 1K R171 47
R172 1K

6
12-74 L31-0971-05 L32-0934-05 YES NO YES NO YES YES YES NO NO UNIT R138,251W160, W400- W405- W410, R135 254,256,260 R139 R258 R261 R263 R526 W524 WH1 578 161 404 409 No. 00-12 YES YES NO YES YES 100 220 430 10 180K 5.6K 4.3K 5.6K YES NO NO NO NO YES NO NO YES YES NO NO

19

19

20

25

D108

P1

00-22

NO

12-75

NO

YES

NO

100

430

180K 5.6K

NO

NO

NO

YES

YES

NO

KDC-222/222S/2023/3023 KDC-2024SA/SG/SYA/SYG KDC-2094YA/YG (1/2)

12-74

NO

YES

NO

100

430

180K 5.6K

NO

NO

NO

YES

YES

NO

CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list). ! Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer. · DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual instruments or/and units.

7

Z

AA

AB

AC

AD

1

SWITCH UNIT (X16-1460-xx/2370-12) (B38-1080/1081/1126-05) : KDC-4023/202MR/2024SA/2024SG/2024SYA/2024SYG/2094YA/2094YG/2022/2022V/2023/3023/RX-491CD/RY-391CD
S21 S31 S22 S12 S30 S29 S28 S18 S20 S26 S25 S23 S19 S13 S15 S16 S38 S35 S33 S32 S36 S40 S39 S27 S17 S24 S14 S34 S37 S10 S11 S5 S8 S9 S7 S6

(B38-107

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

2
ED1 (SEGMENT) ED1 (COMMON)
C1 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 1 2 3 4 5 6 7 8 C2 38 39 9 C3

3
ED1 (COMMON) ED1 (SEGMENT)
J1
ESD-GND 15 PANEL14 SW SW5V REMO 12 TP27 13 TP33 R2 470 R4 470 R3 470 R5 1K IC2 TP35 TP34 TP24 +5V

REMOTE SENSOR
2.2 KS5

C3

C2

C1

S40

S39

S38

S36

S35

S37

TP9 TP8 TP7 TP6 48 47 46 45 44

R12 1K +5V 80 2 5.0V

43

42

41

40

39

38

37

36

35

34

10K

33

A

Q1
49
10K

S34

S33

R13 47

C5

4

KEY DETECT SW

KS4

KS3

KS2

39

1

2

3

4

5

6

7

8

9

COM1

KS2

N.C.

KS5

KS3

TP11 KI1

S40

S39

S38

S36

S35

COM2

S37

KS4

1/2

GND2 OUT

VCC

TP29 L-CE L-DATAL N.C 8 7 TP32 RST 6 TP26 LED+B 5 TP21 3 TP31 PAN 5V D-GND 2 TP22 1 9 TP30

(BOTTOM VIEW)

L-CLK 10

79 78 77

1

X14J3

L-DATAS

11 TP28

IC2

KS6 KI1 KI2 KI3 KI4 KI5

TP1 KI1 TP2 KI2 TP3 KI3 TP4 KI4 TP5 KI5

50 51 52 53 54

COM3

5V 0V
S32 S31 S30 S29 S28 S27 S26 S25 S24 S23 S22

S34

S33

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

A

GND1

S32 S31 S30 S29 S28 S27 S26 S25 S24 S23 S22 S21 S20 S19 S18 S17 KI4 TP14 KI3 TP13 KI2 TP12

RST S17

0V
+B C9 0.01 R21 220 R22 220 +5V

4

3

C4

LAMP+B 4 ILL-GND

D19

0.01

5

R10 4.7 R7 4.7K

0V 55 TEST 56 +5V VDD C3 0.047 57 VDD2 C2 0.047 58 VDD1 0V 59 VSS R8 56K
C1 1000P 60 61 62 63 64 OSC L-DATAL L-CE L-CLK

5.0V 3.3V 1.7V

IC1
LCD DRIVER

D8 D11 D3 D6 D10

D7
C6 0.01

R16 510 +B

1.7V 0V 5V 0V 5V 0V
KEY N.C. N.C. N.C. S10 S11 S12 S13 S14 S15 S16 S16 S5 S6 S7 S8 S9

S21 S20 S19 S18 S17

77 78 79 80

D17 D2 D5 D1 D4

R19
R14 330 R15 330

L-DATAS

D22
5V

11

1

10

12

2

13

15

S11

S10

S12

S13

S14

D18 D9 D13

S7

0V

S15

S5

S6

S8

S9

C7 0.01 R20
R17 510 R18 510

14

16

3

5

6

8

4

7

9

TP15 KI5

6

D20 D12

7

CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list). ! Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer. · DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual instruments or/and units.

AE

AF

AG

AH

AI

1

(B38-1079-05) : KDC-1023/1023S/122/122S/222/222S
S21 S31 S22 S12 S30 S29 S28 S18 S20 S26 S25 S23 S19 S13 S15 S16 S38 S35 S33 S32 S36 S40 S39 S27 S17 S24 S14 S34 S37 S10 S11 S5 S8 S9 S7 35 S6 36 37 38

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

39

1

2

3

4

5

6

7

8

9

2
ED1 (COMMON)

C1

C2 38

37

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

1

2

3

4

5

6

7

8

9

39

C3

3
ED1 (SEGMENT)

S1
TP16 TP17 TP18

TP19

IC1 : LC75853NE IC2 : RS-171 Q1 : DTA114EUA

S25
TP11 KI1

S14 4

S13 3

S2

D1-13,20 D17,18 D19 D22 ED1

: : : : MA3062WA :

+B

GND LINE B LINE

4

S3 S24
TP12 KI2

MODEL NAME RX-491CD (J) RY-391CD (J) KDC-4023 (M) KDC-202MR (K)

UNIT No.

A

C5

C6, 7

D1-13,20

D17,18 B30-1564-05 or B30-1642-05 (BLUE) B30-1533-05 (GREEN) B30-1564-05 or B30-1642-05 (BLUE) B30-1533-05 (GREEN) B30-1533-05 (GREEN) B30-1533-05 (GREEN)

D19

D22 R13

R19, 20

S15 5

S12 2

S4 VOL+ S5

B30-1533-05 X16-1460-01 YES YES YES (GREEN) X16-1460-03 NO NO B30-1533-05 NO (GREEN) B30-1533-05 (GREEN)

B30-1633-05 NO B30-1633-05 NO

YES 390 NO 510

S22 S23
TP13 KI3

X16-1460-11 YES YES YES X16-1460-12 YES YES NO NO NO YES NO

B30-1633-05 YES YES 390 B30-1633-05 YES YES 510 B30-1633-05 YES NO 510

S16 6

S11 1 S9

S6 VOLS7 S8 SRC

FM S26 S27

KDC-1023 (M) X16-1460-13 KDC-1023S (M) KDC-2024SG (E) KDC-2024SYG (E) X16-1460-14 KDC-2094YG (E) KDC-2022V (K)

B30-1533-05 (GREEN) B30-1533-05 NO (GREEN) B30-1533-05 NO (GREEN)

5

B30-1633-05 YES YES 510

S19 TI

S10 ATT

B30-1567-05 X16-1460-15 YES YES YES (RED) X16-1460-16 NO YES NO NO NO B30-1567-05 (RED) B30-1533-05 (GREEN) B30-1567-05 (RED) B30-1567-05 (RED) B30-1567-05 (RED) B30-1567-05 (RED)

B30-1564-05 or B30-1642-05 B30-1633-05 YES YES 390 (BLUE) B30-1567-05 (RED) B30-1533-05 (GREEN) B30-1567-05 (RED) B30-1564-05 (BLUE) B30-1567-05 (RED) B30-1564-05 (BLUE) B30-1633-05 YES YES 510 B30-1633-05 YES YES 510 B30-1641-05 YES YES 510 B30-1633-05 YES YES 390 B30-1633-05 NO NO 510

TP14 KI4

AM S20

KDC-2024SA (E) KDC-2024SYA (E) KDC-2094YA (E) KDC-2023 (M) KDC-3023 (M)

X16-1460-20 YES YES X16-1460-21 YES YES

S21
TP15 KI5 KS2

S18 CLK
KS3 KS4 KS5

KDC-2022 (K) KDC-122 (K) KDC-122S (K) KDC-222 (K) KDC-222S (K)

X16-2370-10 YES YES YES X16-2370-11 NO X16-2370-12 NO NO YES NO NO

AUD

B30-1633-05 YES YES 510

6

KDC-2022/V/202MR/4023 (2/2) KDC-122/S/1023/S (2/2) KDC-222/S/2023/3023/2024SA/SG/SYA/SYG/2094YA/YG (2/2) RX-491CD/RY-391CD (2/2)

7