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CD RECEIVER

KDC-2027SA/SAY/SG/SGY KDC-3027A/AY/G/GY KDC-308A/AY/G/GY KDC-4027/V/VY/Y KDC-F327A/G

SERVICE MANUAL
Panel assy KDC-2027SA/SAY/SG/SGY (A64-3168-02)

© 2003-11 PRINTED IN JAPAN B53-0104-00 (N) 1839

CD mechanism extension cord (22PIN) : W05-0618-00
Front glass KDC-2027SA/SAY/SG/SGY (B10-4462-01)

MONO

D LO U

AUD
AME
AUTO

OFF

SCAN

RDM

REP

CLK ADJ

Panel assy KDC-3027A//AY/G/GY (A64-3166-02) KDC-308A/AY/G/GY (A64-3167-02) KDC-F327A/G (A64-3169-02)

Front glass KDC-3027A/AY/G/GY (B10-4460-01) KDC-308A/AY/G/GY (B10-4461-01) KDC-F327A/G (B10-4463-01)

PTY

D LO U

AUD
TI
VOL AUTO

OFF

SCAN

RDM

REP

CLK MENU

Panel assy KDC-4027/V/VY/Y (A64-3165-02)

Front glass KDC-4027/V/VY/Y (B10-4459-01)

EXTERNAL MEDIA CONTROL

-

PTY +

D LO U

AUD
TI
VOL AUTO

OFF

SCRL

SCAN

RDM

REP

M.RDM

CLK MENU

DC cord (E30-6132-05) (E30-6286-05)

Mounting hardware assy (J21-9716-03)

Antenna adaptor (T90-0523-05)

Lever (D10-4589-04) x 2

Escutcheon (B07-3001-02)

Plastic cabinet assy (A02-1486-13)

TDF PANEL INFORMATION MODEL PARTS NO. KDC-2027SA/SAY Y33-1960-64 KDC-2027SG/SGY Y33-1960-65 KDC-3027A/AY/G/GY Y33-1960-62 KDC-308A/AY/G/GY Y33-1960-63 KDC-4027/Y Y33-1960-60 KDC-4027V/VY Y33-1960-61 KDC-F327A/G Y33-1960-66

PANEL NAME TDF-2027SA TDF-2027SG TDF-3027 TDF-308 TDF-4027 TDF-4027V TDF-F327

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

CLK DATA MUTER MUTEL MRST MSTOP

SERCH

PON

S2(12EJE SW)
12EJE SW 21 LOE & LIM SW

MECHANISM CONTROL IC DSP RESET

INTQ SI AO STB SCK SO

INTQ SO RST AO STB SCK SI FD+ TD+ SD+ MD+

PD

LD

Z MUTE L Z MUTE R

LOUT ROUT

8EJE SW 17 A8V 9 DOUT 22 Lch 8 AGND 7 Rch 6 S7.5V 3 SGND 2 MOTOR 4 LO/EJ 5 NC 16 OPEN OPEN

X1 4.19MHz

TX

S4(8EJE SW)

LZM RZM

MUTE

FDINTDINSLIN+ SPIN-

2
CD PLAYER UNIT (X32-5490-00)

IC2
BU5V 15 DGND 14 CLK DATA MUTER MUTEL MRST MSTOP 19 18 13 12 11 10

DPU1 : OPTICAL PICKUP
SW3.3V

BU5V

3.3V AVR
CNTL

Q2 5V SW IC1
PON

Q3 APC LD PD

SW5V

S1(LOS SW)

LOS SW 20

IC3 Q4
F A B C D E

SW

F A B C E

BLOCK DIAGRAM

S3 (LOE & LIM SW)
LOE&LIM 1 SW

CD RF/SERVO/ DSP/DAC IC

DRV MUTE

PRE OUT

VREF

X2 16.934MHz

TR COIL FO COIL

LPF IC4 LPF
S7.5V
CNT LO/EJ BIAS TR+ TRFO+ FOSPD+ SPDSLD+ SLD-

4ch BTL DRIVER

DM1 SPINDLE M MOTOR DM2 LOADING M & SLED MOTOR

ELECTRIC UNIT (X34- )
FM+B Q502 A8V IC10 FM AGC OUT Q223,224

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.
TUNER OUT

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

1200mV

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

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 BACK LIGHT

BU5V FM+B AM+B AUDIO+B ILLUMI

LCD

LCD DRIVER WITH KEY MATRIX

REMOCON

SWITCH UNIT (X16- )

KEY ILLUMI

3

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

COMPONENTS DESCRIPTION
SWITCH UNIT (X16-2462-7x/2472-7x)
Ref No. IC1 IC2 Q1 Q2 Q3 Application/Functions LCD driver Sensor Key scan detect LED SW LED SW Operation/Condition/Compatibility 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

CD PLAYER UNIT (X32-5490-00)
Ref No. IC1 IC2 IC3 IC4 Q2 Q3 Q4 Application/Functions Mechanism control SW3.3V AVR CD DSP & servo IC BTL driver SW APC SW Operation/Condition/Compatibility 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

ELECTRIC UNIT (X34-3102-7x)
Ref No. IC1 IC4 IC6 IC7 IC8 IC10 IC11 IC12 Q10 Q20 Q40 Q50 Q51 Q55 Q70 Q101 Q102 Q201 Q223,224 Q251 Q252 Q253 Q501 Q502 Q503 Application/Functions System control IC Audio power IC RDS decoder Power supply IC Muting logic IC E-VOL & tuner IC Reset IC E2PROM BU detector ACC detector Muting driver foe Q223, 224 SW5V SW SERVO +B AVR Serge detector DSI illumination SW Panel 5V SW Noise buffer Preout muting SW SW Smeter RC & MPTHTC SW Smeter RC & MPTHTC SW AM RF amplifier FM RF amplifier MPX buffer Operation/Condition/Compatibility 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 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" When the base goes "H" (RF circuit gain is up) When the base goes "H" (RF circuit gain is up) MPX input buffer with RDS

4

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

MICROCOMPUTER'S TERMINAL DESCRIPTION
SYSTEM MICROCOMPUTER : UPD780058GC55x (X34 : IC1)
Pin No. 1 2 3 4 Name PANEL 8EJE SW NC Avss H : Panel detached, L : RESET 5 L-RST O LCD driver RESET Normal H, Power off L When 7seg model, output L H : Select (panel communication) 6 7 8 9 10 L-CE AVREF1 NC IC10-DATA IC10-CLK I/O O Not used (connected to 9pin) IC10, E2PROM data communication IC10, E2PROM clock communication Non communication : H Non communication : H Non communication : H 11 L-DATAL I Data input from the LCD driver When panel detached : L Pull down on X34 unit, Pull up on X16 unit 12 13 14 15 16 17 L-DATAS L-CLK R-DATA R-QUAL CH-DATAC CH-DATAH O O I I I O 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) Except changer model : Output L Check the old and new 18 CH-CLK I/O Clock input/output with the Changer (new 5L) Except changer model : Output L L : Requset 19 20 21 22~24 25 26 27 28 29 30 CH-REQH NC AFS NC CH-CONT TYPE REF SD NC TYPE2 TYPE1 O O O O O O I O I I Request output to the changer (new 5L) Except changer model : Output L Not used (output L) H : Normal, L : FM/AM seek and AF search Noise detection time constant switching terminal (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 Tuner SD input Not used (output L) Destination type selection terminal 2 Destination type selection terminal 1 Refer to destination type list. Refer to destination type list. H : During destination reading H : Station detected 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 O LCD driver selection When panel attached, output L I/O I I Except 8cm CD model : Always output L O Not used (out put L) Panel detection Description Processing Operation H : Panel detached, L : Panel attached H : Eject is completed

5

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. 31 32 33 34 35 36 37 Name TYPE0 TUNER-TYPE1 Vss1 TUNER-TYPE0 MUTE M-DATA M-CLK I O I/O O Destination available/genuine model noise cancel Mute (E.Vol, Preset) control Power off after that 15 second L Data input/output with the CD mechanism Clock output to the CD mechanism Non communication : H Non communication : H When adjustment = H 38 ADJ O 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 39 P-MUTE O Power IC mute control Power off after that 15 second H H : When momentary power down detected 40 41 42 43 44 SVR P-STBY SW5V B.U-DET ACC-DET O O O I I Power IC servo control L : Nomal Power IC standby control SW 5V control Power off after that 10 second H Back up detection terminal ACC detection terminal Power supply IC SW1 control 0 45 PS1-0 O Audio 8V, P-CON H : Power down, L : B.U. on H : ACC OFF, L : ACC ON BA4911 SW1 PS1-2 PS1-1 PS1-0 L Power supply IC SW1 control 1 46 PS1-1 O Audio 8V, P-CON 47 PS1-2 O Power supply IC SW1 control 2 P-ANT Power supply IC SW2 control 0 48 PS2-0 O ILLUMI, FM, AM BA4911 SW2 Power supply IC output PS2-1 PS2-0 ILLUMI L Power supply IC SW2 control 1 49 PS2-1 O ILLUMI, FM, AM 50 BEEP BEEP H : Light on, L : Light off When panel attached, output L 51 DSI O DSI control When panel detached, flashing at the panel (H/L) FIX model is output L 52 53 NC NC O O Not used (out put L) Not used (out put L) L (H) H L H (L) H ON ON FM AM L L H L L (H) H H L H (L) H H ON ON ON Power supply IC output A8V P-CON P-ANT STANDBY OFF ON ON OFF OFF ON H : Power IC ON, L : Power IC OFF H : SW5V OFF, L : SW5V ON H : Genuine model 0, L : Available model H : Mute on, L : Mute off I/O I I Description Destination type selection terminal 0 Destination available/genuine model rool off Processing Operation Refer to destination type list. H : Genuine model 1, L : Available model

STANDBY ON OFF OFF ON

6

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. 54 55 56 57 58 59 60 61 62 Name LOE/LIM SW MO SW LO/EJ M-STOP M-RST M-MUTE RESET REMO R-CLK I I I/O I O I/O O O I Description 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 Except RDS model : Output L H : Changer detection 63 CH-REQC I Request input from the changer (new 5L) L : Request Except Changer model : Output L H : No disc 64 LOS SW I CD mechanism loading's switch detected L : Disk in (Loading Start) Key input detected 65 66 67 68 69 70 71 72 73 74 75 76 77 KEY-REQ 12EJE SW Vss0 VDD1 X2 X1 IC XT2 XT1 VDD0 AVREF0 connection to the 80pin AVCONT S-METER NOISE I I S-meter input FM noise detection input 2.5V or greater : NAVI MUTE 78 PHONE I 2 way mute 1.0V or less : TEL MUTE Except phone mute model : Output L 79 80 NC AVCONT O O Not used (out put L) H : During A/D converter active A/D converter standard voltage control output same timing with PON VDD A/D converter reference voltage control output, Connected to VDD MAIN X'tal oscillating circuit MAIN X'tal oscillating circuit TEST Not used OPEN 4.19MHz X'tal connection 4.19MHz X'tal connection I (11pin L connected to the DATA L) I 12cm disc detected L : Key input (edge key data reading start) L : 12cm disc H : Key no input Processing Operation 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

7

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

MICROCOMPUTER'S TERMINAL DESCRIPTION
CD MECHANISM CONTROL IC : 789166YGB-A513 (X32 : IC1)
Pin No. 1~6 7 NC ZMUTE_L Name I/O I I NC 0 bit MUTE detect (Lch) More than 54h : ZMUTE detect Less than 54h : NORMAL, 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 39~41 42 43 44 ZMUTE_R AVss /MUTE_L /MUTE_R /MSTOP INTQ /FOGUP PON /SCK Vdd1 SO SI /CLK DATA Vpp XT2 XT1 /MRESET X2 X1 Vss0 Vdd0 LOE&LIM_SW DRV_MUTE NC /SERCH /STB A0 Vss1 /DSP_RESET NC /PON Avdd Avref I O O I I I O O O I I/O I/O I I I I O O O O O O O O 0 bit MUTE detect (Rch) More than 54h : ZMUTE detect DGND Lch Audio mute control Rch Audio mute control Interruption for stand-by Interruption for DSP IC Interruption for focus gain up Power ON/OFF control (for DSP) serial data clock output BU5V (for DSP) serial data output (for DSP) serial data input (for system control) I2C clock (for system control) I2C data (FLASH saving terminal) NC NC Reset detect System clock System clock DGND BU5V Loading end & limit SW detect Driver muting NC Condition of serch state Data strobe signal output Command & parameter signal output DGND DSP reset control NC Power ON/OFF control BU5V BU5V L : RESET, H : NORMAL OPEN L : ON, H : OFF L : Inside detect, H : Outside L : MUTE ON, H : MUTE OFF OPEN L : Search, H : NORMAL OPEN GND L : RESET, H : NORMAL 4.19MHz 4.19MHz L : MUTE ON, H : MUTE OFF L : MUTE ON, H : MUTE OFF L : STOP, H : Release for STOP mode H : Interruption L : Fo GAIN UP, H : NORMAL H : ON, L : OFF Description GND Less than 54h : NORMAL, Processing Operation

8

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

TEST MODE
1. How to enter test mode
While holding the FM key and preset 6 key and reset the unit. All display segments light up when the test mode is entered. · Holding Preset 3 while the operating hour information is displayed clears it. · Holding Preset 5 while the ejection count information is displayed clears it.

2. How to exit from test mode
Reset the unit. Turning ACC off, power off, momentary power down or panel detaching does not terminate the test mode.

Adjustment Mode
· Adjustable items 1 : Stereo Decoder 2 : Configuration 3 : Stereo decoder Adjustment 4 : Hi-Cut 5 : Field strength control Sub address : 9 Sub address : D Sub address : E Sub address : C Sub address : B

3. Test mode specifications of CD receiver
· Pressing the Track Up key skip to tracks in the following sequence: No.9 No.15 No.10 No.11 No.12 No.13 No.14 No.9 (repeats the cycle) · Pressing the Track Down key skip to the track immediately before the track being played. · Pressing Preset 1 key skip to track No. 28. · Forced ejection is not provided.

· Default values If they are not written in the EEPROM, the default values specified are set in IC10.

Adjustment procedure
1. Enter the IC10 Adjustment mode by resetting the unit while holding preset 3 key + preset 6 key. 2. Select the TUNER source by pressing SRC. 3. When the adjustment mode is entered, the display shows 2-digit hex number. 4. When preset 1~5 is recalled, the setting values corresponding to the pressed number are displayed. (The displayed values are those in the RAM.) 5. Vary each setting value using and key. 6. Store the values in the corresponding preset number. 7. The settings can be performed individually for each item. (It is not required to store all the values together.) 8. After storing the values, reset the unit to exit from the adjustment mode. The values set in the EEPROM will be read during the resetting. 9. When the band is switched, there may be cases in which the preset number being displayed does not coincide with the stored setting value. To check this, be sure to recall the preset number after you switch the band.

4. Audio functions
· Pressing the AUDIO key or the " " key on the remote controller initiates the Audio adjustment mode. · In the Audio adjustment mode, the Seek Up/Down keys on the remote controller can only be pressed shortly. (They cannot be held depressed.) · The volume is -10dB (which is displayed as "30"). · LOUDNESS is OFF. · The Bass/Treble Up/Down and Balance/Fader Up/Down buttons function as full-boost/full-cut and full-front/full-rear respectively.

*

5. Menu mode (for 14segment model)
· Pressing the CLK or the DNPP key on the remote controller initiates the Menu mode. · In the Menu mode, the Seek Up/Down keys on the remote controller can only be pressed shortly. (They cannot be held depressed.) · With the models incorporating RDS, the first operation in the menu becomes local seek.

Notes
1. The items that are not stored will be set to the default values. 2. Once a value is stored in memory, the value will always be used later. (It is not allowed to modify the setting values by switching the destination type.)

6. Version and operating hours display
· The following table shows the key operations and resulting display information.
Key Operation Pressing Preset 1 Pressing Preset 2 Pressing Preset 3 Pressing Preset 4 Pressing Preset 5 Pressing Preset 6 Display Version (Date and time display) All display segments light up CD operating hours E2PROM (Adjustment data for IC10) CD ejection count Number of times adjustment for IC10

9

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

ADJUSTMENT
1. IC10 (TDA7513T) -The Tuner adjustment method
· When IC10 and its circumference are fixed, according to the following order, it readjusts if needed. · The adjustment item changes with parts to exchange. Please refer to "Parts vs Adjustment item table".

1-3. Adjustment of FM_ANT&RF Coil
Voltage Check Point : S-METER-Check Land (PWB Side B, around W572) Adjustment Coil : ANT Coil = L505 RF Coil = L506 Setting of Signal Generator : Refer to the following tables.
TYPE E/M K J MODE FM FM FM freq. 87.5MHz 87.9MHz 76.0MHz Mod. OFF OFF OFF ANT Input 5 or 11dBuEMF 5 or 11dBuEMF 5 or 11dBuEMF Fig (A),(C) (A),(C) (A),(C)

1-1. VCO Coil Adjustment - Adjustment of Tunning Voltage
: Vt-Check Land (PWB Side B, around D506) Adjustment Coil : L507 (VCO Coil) The adjustment method : VCO coil is turned and adjusted according to the following tables.
TYPE E/M K J Mode AM AM FM freq. 1611kHz 1700kHz 90.0MHz Voltage 5.5 ± 0.1(V) 5.8 ± 0.1(V) 5.6 ± 0.1(V) Fig (C) (C) (C)

Voltage Check Point

qThe appearance and the coil with which S-METER DC voltage serves as the maximum are turned and adjusted in the above-mentioned SG input. wBy the above-mentioned adjustment method, same adjustment is performed to both sides (ANT & RF Coil).

M : AM Adjustment For Your Information : The frequency of SET is only set up by Pre-Set-Key in case this adjustment

1-4. Adjustment of STEREO (adjustment of 456k-VCO)
Adjust in TEST MODE · How to enter the test mode While pressing on [FM] and [PRESET 6] keys, reset the unit. · Adjustment method Complete on condition that show "ALL OFF" when pressing on [PRESET 1] and [PRESET 6] keys. (Writing adjustment valve to the EEPROM.) Effect of adjustment is in cofirmation of adjustment status at [PRESET 4] key. · Display of [PRESET 4] Adjustment "OK" : 14seg model "E2P OK" 7seg model "EPO" Adjustment "NG" : 14seg model "E2P ERR" 7seg model "EPE" · Releasing the test mode Reset mode only. ACC off, Power off, Power down and Remove the panel mode is not releasing.

1-2. Adjustment of 1st & 2nd-MIX Coil
Voltage Check Point : S-METER-Check Land (PWB Side B, around W572) Adjustment Coil : 1st IFT = L508 / 2nd IFT = L509 Setting of Signal Generator : Refer to the following tables
TYPE K E,M,J MODE AM AM freq. 1000kHz 999kHz Mod. OFF OFF ANT Input 35dBuEMF 35dBuEMF Fig (B),(C) (B),(C)

q The appearance and the coil with which S-METER DC voltage serves as the maximum are turned and adjusted in the above-mentioned SG input. w By the above-mentioned adjustment method, same adjustment is performed to both sides (1st & 2nd MIX Coil).

(REAR VIEW)

(TUNER ANT)

[Fig.1]

FM-SG AM-SG

(A) (B)

L505 L506 L507

Vt Check Land IC10

(C) DC Voltmeter

L508 L509

S-METER Check Land (OVER VIEW) (UNDER VIEW)

10

[Fig.2]

[Fig.3]

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

ADJUSTMENT
2. IC10 (TDA7513T) Replacement - Parts vs Adjustment Item Table
· When the parts in the following tables are exchanged, please readjust according to a table. · When other parts are exchanged, please perform only a check of operation. There is no necessity for readjustment.
Replacement parts Parts Name Ref Number IC10 EEP-ROM IC12 ALL TYPE ALL Parts Number TDA7513T M24C01-WMN6T BR24C01AF-W S-24CS02AFJ-TB Antenna Coil L505 E,K,M RF Coil L506 E,K,M VCO Coil L507 E,K,M 1st MIX Coil 2nd MIX Coil Variable Capacitance Diodes Variable Capacitance Diodes Variable Capacitance Diodes X'tal L508 L509 D504 D505 D506 X501 ALL ALL ALL ALL ALL ALL L32-0936-05 L30-0770-05 L30-0771-05 KV1720S KV1720S KV1720S L77-2077-05 · The " K " mark shows that the adjustment is need. K K K K K K K K K K K K K K K K K J L31-0970-05 L32-0932-05 K K K K K J L31-0967-05 L31-0969-05 K J L31-0966-05 K K K K K K K VCOVt K 1st MIX K Adjustment Item 2nd MIX K ANT Coil K RF Coil K Stereo K

11

A

B

C

D

E

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G
1

PC BOARD (FOIL SIDE VIEW)
ELECTRIC UNIT X34-3102-7x (J74-1465-22)
R251/W405 R254/W406 W137

J2
W81
W55 W58

W37 W44

J4

W136

W133

D264

D267

TH1

2
E
C1 C63 L1

16 15 R28

2

IC4

D268

1

D266

25 W67 W52

1

D407

D410

R404

W135

W93

W89

D51

W88

L2 W122

W175

W409/R260

R252/W407

C258 W84

R253/W408

D262

W90

D14

D265

Q55

D12

W86

D13

Q51

D11

W50

W102

C251

R406 C600

R256

C253

C254

R57

R257

D405 D408

W114

W119

1

D251

R412

D70
C51

R32

D30

R261 R263

C50

Q251

R20 R73 R31

W161 BE

W162

D409

D253

D252

W124

D10

C52

EB

R22

Q70

W80

BE W553

W158

W25

D40

R259 W70

C256

Q40

3

C58

R30 C30

R72

D403
R21 W51 W60

W115

BE

R11 C21

IC7
C54 C53

R10

EB

W554 W555

Q20

D20

W57

W48

Q10
W111

W74 W65

W45

W556

R23

W92

W108

W113

Q50
BE

R51

W68 W72 W71 W66

R12

W558 W160 W559

W557

W100

C224

W95

4
12
C57

C55

WH1

W101

W103

D50

R119

W417

W125

R67 R264 R255

14

8 W77

W73

1

W562

C223

Q53

EBE

C40

5

R50

W566

W565

W109

R68 R69

R413

C56

R122

41 40

W76 R415

R138 R137 R136 R135

IC11
2 1

CP3

D101

W78

5
L101

W59

W54

W49

W165

C105

C101 W129

W82

W578

W120

R132

D202

W53 R144

R106

R133

W130

W138

C204

W128

W127

W116

C106

22 21

2 1

D201

W98 R142

R141

D103

CN1

W519 R353

W121

R143

6

R123

W118

D109
W110 W106 R145

D106
W91 W99

D110

R169

R168

R167

W134

W117

W131

W112

C142

Q102

BE

W107

P1

D111

R176

Q101

W404

R163 R172

J3
1

BE R101

2

D102

WH2

7

12

R166
14

W94

W24

C205

W40

C104

R131

W157

80

1

R104 R103 R105 R102

W97

W105

W43

W42

W573

W47

60 61 R126 R127 R128 R414 R129 C102 R130 X1 3 4

W79

W75

IC1

21 20

W85

R114 R111 R112 R140 R139

C103 R125

R113

R174

CP2

R118

C565 W532

W563

CP1

R108 R117 R115

W104

W96

R258

R201

W174

1

7

W564

W63 W61 C404

L516

IC8

R116

W87

R110

W531 W

R121 R107

W64

W62

C593 W580
C560 C562

D402

EBE

R71

C257

W410

D411

C255

C252

R405

D1

D263

B

R25

D261

W156

24

2

F

G

H

I

J

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G
1

J4

X34-3102-7x
J5
C227

J1

IC 1 4
W411

Q

Address 5C 2D 7G 3B 4D 5G 5B 6F

2

1

5

7

6 10 9

C226

2 3 4 8 12 11 13

R231

R227

R410

W516 R232

R411

R409

R401

R404

R406

R405

R407

R408

R403

R402

R228

6 7 8 10

R223

D404

D401

BE

BE

D411

C402

405 408

Q223

W413

Q224

R224

W412

C521

11 12 10 20 40
D3
L4

C526

C525

W500 C530 C529

W419

C528 /W401 C522

D402

D403

D504

C401

D503

W414 L505

4C 4C 3E 4D 3A 2A 3C 7A 6C 6G 3G 3G 3D 6G 6G 4G 3G 6G

C591

C524

3

W553

C403

C531 R523

R522

G G S D

R524 W521 C523 R521 C516

W400/C594 L501

Q502

50 51

R529/W524 W523

R525

D40

L502

C502 R501

C534

L506

D501

L512 L513

C533

W554 W555

W533

55
C503 R502 C505

W601

C537 C538 R527 R526 C535

W556

C536

W415 C504

70 101 102 201

R544 C542 R543 D506 C543 R528 C544 D505 R547

Q501

C507

W504

C600

G C

L507

C541

C593 W580

C555

S B W505 R506

C506 W506

L503

W507

C548

L514 R546 R545 C549

C545 C547 C550

R505

W550 W551 W552

C508 C509

223 224 251 252 253 501 502 503

4

L504

L516

W418 C554

C553

C556

W501

C562

C561

W508

41

80 C581 R581

C511

IC10

L508

40

1

C512

L517 C552 C551

R503

21

20

C515

C560

X501

W534

C514 C513 C510

C546

R507

R561

C568 W577

5
CF51

C564

C563

W573

R563 R565 R564 8

60 61 R567

C580 C582 R585

R566

C584

C586

C592

W576

R352

W575

W24

IC12
1 4

C583 R582

W574

D103

W519 R353

W517

W567

C585

R180

W568

Q252
BEB

L509

W510

W403

R134

CF54

R167

W572

R175

C354

R171

W515

C351 8 1

14 15

W520

W402 9 16

C558 W530

C557

X2

IC6

C356 C355

D108

C352/R173 R542 1 2

D107

R168

R166

R165

R164

R170

C353

EB

CN3

2

W569 Q253 BEB R58

R205 Q201

Q503

R351

R204 R541

3

1

B E

CF53

CF52

5

W509

C587 C588 C589 W511 W512 C590

L510

6

Refer to the schematic diagram for the values of resistors and capacitors.

7

13

K

L

M

N

O

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G
1

PC BOARD (COMPONENT SIDE VIEW)
SWITCH UNIT X16-2462-7x (J74-1561-02)
FM CLK

(FOIL SIDE VIEW)
SWITCH UNIT X16-2462-7x (J74-1561-02)

KI2

D19 D29

Q3
EB

W2

KI3

D17 D27

KI2 KS2

D18

D28

R13 R12 R33

2
KI4
AM

KI3
6

EB

KS3 KI5

Q2
KI1 KI5

KI4

KS4
5 56

KS4

KS2

D16 D26

KS3

KS5

3
4

40 41

25 24

D15 D25

3

IC1

4

ED1

2

64 65 C1 R1 R4 80

1

Q1
EB C3 C4 C2 W1 R3

R32

D14 D24

1

1 2

PAN 5V

R2

RST

RST

5
SRC

L-RES L-DATAL L-CE L-CLK L-DATAS

R8 R9 REMO

R5 R6 R7

D31 D32 D33 D34 D35
D-GND

14

15

R11

J1

1

SW5V

X16-2462-7x IC 2 Address 7L

D4 D6

X16-2462-7x IC 1 Q Address 4O 1 4N 2N 2N
ESD-GND

D36
ILL-GND

VOL UP

D1

VOL DWN

6

2 3
AUD

C11 C13

ILL+B

R22 R21 R23

D9 D3 D2
KS5

D13 D23

D10 D8

D7

R29/C12 R24 R25 R27 R28

R42 R41

R31

R10

D12 D22

KI1

TI

C5

1

3

PANEL SW

D11

D21

IC2
2 4

ATT

7

Refer to the schematic diagram for the values of resistors and capacitors.

14

P

Q

R

S

T

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

PC BOARD (COMPONENT SIDE VIEW)
SWITCH UNIT X16-2472-7x (J74-1563-902)
FM CLK

(FOIL SIDE VIEW)
SWITCH UNIT X16-2472-7x (J74-1563-902)

1

KI5

KI3

Q1
EB

KI4

KI4

KI5

D18

KI2

D17

KI3

R33

KS4

D19

KS3

2
KS2

KS2

KI1

6

KI2

AM

KS3

KS4

5

KS5

39

D16

R2

3
4
C2 C3 C4 C1 R1 R3
64 49 48 1

3

IC1

D15

16 17 32

33

4
R32

2

D-GND

D14

1

PAN 5V

1
ILL-GND LED +B RST L-DATAL R6 R7

2

ED1

RST

SRC

L-CE

5

D32 D33 D34 D35
REMO R11 SW5V

14

J1

D4 D6

R8 R9 L-CLK L-DATAS

15

1

X16-2472-7x IC 1 Q Address 4S 1 2S

PANEL-5V

R21

R22

VOL UP

D1
VOL DWN

R26

6

AUD

D8

C11 R23

D5 D3

D7

R10

C12

R28

R25

D2
KI1 KS5

D13

AME

C5

R31

C13 R24 R27

ESD-GND

1

D11

3

ATT D12

IC2

Refer to the schematic diagram for the values of resistors and capacitors.

2

4

7

15

U

V

W

X

Y

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G
1

PC BOARD (COMPONENT SIDE VIEW)
CD PLAYER UNIT X32-5490-00 (J74-1551-02)

2

R31

R30

C28

C3

C7

S3

X1

BE

3

R9

C6

C4

4

C21 C19

C25

5
C29

X2

CP1

R46 R47 R7

Q1

BE

R13

R12

R14

CP4

Q2

C34

C40

CP8

6
X32-5490-00 Q 2 Address 3X

Refer to the schematic diagram for the values of resistors and capacitors.

7

16

S2

S1

S4

Z

AA

AB

AC

AD

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

PC BOARD (FOIL SIDE VIEW)
CD PLAYER UNIT X32-5490-00 (J74-1551-02)

1

FCS R39 FD R41 MD SPDL

R38 C35 R37 R35 C36

TRK R34 TD R36 SD

/DSPRST

R40 C37

1

30

2

/STB

Vref

R42 C38

DGND

/PON

IC4

SLED

A0

/SERCH

BU5V

DRVMUTE 15 R32 R3 LOE&LIM LOE/LIM 16

44 1

34 33

IC1
11 23

/MRESET

MOTOR

C8

FOGUP

12 R6 /MSTOP /MUTER /MUTEL

22

S.GND

3

Vpp

R8

SPDL+

PON SO

1
S.7.5V A.GND /MSTOP /MUTEL A.+8V SPDLRch /CLK DATA 8EJE BU5V LOS Lch D.OUT R11 R10 5 C9 LO/EJ /MRST /MUTER SLED OUT /LOAD SLED IN /EJECT D.GND

/CLK

INTQ

/SCK

SI

SW5V

ZMUTEL

ZMUTER

CP5

C1

22

R1

CN2

CP3

DATA

12EJE 1

4

R15 R19

R2

C10

C2

IC2
3 4 C11

C20

R18

R17

R16 C18

L1

DAVDD

C15

C12

C17 25 26 TZD LOCK MIRR

C16

RFOK

C13 R22

R23

C14 C24 C23 R24 R26 C31

ADCIN

Q4
EB R20

FZD

100

CP6

Q3

R25

C26

R29 FLAG Vref

C27

HOLD

IC3

C22

F

FE

LD

D2

T

1

EB

D3.3V FCS UP FCS DOWN TRK OUT TRK IN 16

R27 R28

1 PD C+D Vcc

5
CN1

ATEST

50 51 75

76

B A

C46 C43 C45 C44

R44 C42 R43

C33 R33 C32

C30

CP7

IOP+

R45

C41

C39

TE

E

F

VR

GND

ARF

IOP-

Vref

RF

6
X32-5490-00 IC 1 2 3 4 3 4 Q Address 3AA 4AC 5AA 2AB 5AB 5AB

Refer to the schematic diagram for the values of resistors and capacitors.

7

17

A

B

C

D

E

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G
1
PRE OUT FRONT

DAUGHTER UNIT (X89-2590-10)
R229 100

D
3

PRE OUT

REAR

1 R225 30K

2

CN90
100

J5

ELECTRIC UNIT (X34-31xx-xx)

CHANGER CONNECTOR J4
D GND 1 2 3 4 5 6 7 8 9 10 13 BU 11 12 Q221,222

R226 30K

R230

C227
680P

C226
680P

C221 R221 10u16 270 +

4.7K

4.7K

AUDIO MUTE SW AUDIO MUTE DRIVER Q225
REQ C CLK

Q221

Q222
R231 100

R232

W160

W101

R222

270

R227 30K

R228 30K

Q223
C222 10u16 + W102
4.7K

Q224
4.7K

REQ H

CH CON

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

MUTE

A GND

22K

22K

C223 R223 10u16 270 +

1

2 3

4

5

R405 4.7K

R406 4.7K

R408 4.7K

R404 100

R411 100

R403 4.7

R402 10

1 C403 100u10 + C402 1u50 +

5

25

19

18

63

D404

4 3 2 1

D402

D405

D410

D407

D403

D408

D401

D409

Q40
22K 22K

45

46

44

MUTE DRIVER

ANT. J1

C
L501 R501 6.8K L502 33uH

D411

W156

WH1

W161 C504 0.01 L504 3

C252 0.22u50 C253 0.22u50

W407 R252
4.7K

3
D3
L4

6.8uH

Q501 AM RF AMPLIFIRE
C509
R502 2.2K R503 2.2K

100uH

W408 R253
4.7K

C502

C516 10P

C505 4.7u16 +

R506

C508 22u10 +

C503

0.1

1M

C525 C524

R507 1K

C510 100P

68P

R521

100K

W521

C506 0.1

GND

7 6

CF51 10.700MHz

C594

R505 1K

L503 1mH

RR RL

FR FL

12

D501

48P

C534

R581

1K

D503

0.01

33P

4.7uH C511 0.01 8

CF52 10.700MHz

L505

L511 4.7uH

C522

2P

C591 33u10 +

L512

4

C536

R523 100K

C521

4.0V
70 FMAMP2OUT 71 FMIFAMP2IN

73 C582

8.0V

8.0V 8.0V

3.5V

4P

80

79

78

77

76

75

74

FMNAGCIN

FMIFAMP1IN

C523

R522

100K

C531 1

27P

13

W533 C533 0.01

R524

W401

C528

100K

330

W500

D505
W415 W504 R527 100K
R528 100K

AM FM
15 C512 4.7u16 + 3 C513 0.01 C514 0.01 C515 1

4P C544 C543 68P 15P

W505

5.0V 0V

1 2 3 4 5

FM AM
VREF5V TUNGND AMMIX1IN+ AMMIX1INANAGC1TC ANAGC1OUT ANAGC1VOUT FMMIX1IN1

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

FMIFAMP1OUT

6P

FMIFAMPREF

11

14

FM AM FM 3.2V 2.0V 0V

R525

C541

W507

AM AM PW-ON AM

17

5

D506

L507
6800P C545
R543 5.6K

C542 22P R544 2.2K

18

6 7

60mV

6 7

4.1V 3.2V 0V 3.4V 0V

20

8

C537
0V

8 9

MPX BUFFER

NOISE BUFFER
R541 1K R542 4.7K

E
R204 1K W512

10 11 12 13 14

C538

CN3
2

Q503

Q201

20

C352

R173

330P

R205 4.7K

15

W402
51 77

W403

61

17 18

1

C600 100u10 +

C555 1000P

PLLGND

PLLVCC

5.0V 0V
15 14 R351 2.2K 1

IC6
QUAL RDDA

LFREF

2.5V 22

R546 33K 2.5V 23

8.0V 25

5.0V 0V
C351 10u6.3 +

RDCL T57 OSCOUT

15 14

2.2K C356 10P C355

0V 24

26
X50

16

2.5V 21

R352 2.2K 2

5.0V 0V
R353

LFOUT

C547 10u10 + C548 0.022

L514

C551

C353 10u6.3 +

VCC 6 7 EXTRES GND TM FSEL

11 0V 10 0V 9 C550 0.033

0V

C557

7

C558
0.01

0.01

ARI RDS 8 FILOUT DECODER W530

0V

18

X34-3102-7x (1/4)

2200P

C354 0.01

C549

12 5.0V

0.01

VREF 2.4V 4 MPX 5.0V 5 OSEL

2.4V 3

4.7uH

X2

OSCIN

13

10.250

4.332MHz 10P

R545 4.3K

XTALG

LFHC

LFIN

C546 0.01

W534

62

6

RFGND FM FMMIX1IN2 0V 11 FMAGC1OUT 0.7V 12 FMAGCIN 8.0V 13 FMAGCVOUT AM W523 PW-ON 14 FMANTADJ 15 FMRFADJ 0V 16 OSCGND R547 22 3.2V 17 VCOE 3.8V 18 VCOB L517 8.0V 19 OSCVCC 20 4.7uH 10

2.0V 0V

4.2V 2.8V 0V

1K

W531

57

3.4V 0V 2.4V 0.8V

AMMIX2IN1

MIX1OUT1

MIX1OUT2

IF1GND

TUNVCC

W524 R529

IFVCC

12

72

69

D504

C535 2P

R526 5.6K

0V

10

8.0V

0.1

4.2V

C526

C530

L510 4.7uH

C581

FM RF AMPLIFIRE

L506

L508 W508

C580 0.01

Q502

CF53 10.700MHz

W509

C529

C507 33u10 +

L513 W601 4.7uH

C585 0.01

PGND2

Q221,222 : DTC143TUA : DTA124EUA Q225

MUTE

2

CN91

IC4

0V

2

C224 10u16 R224 + 270

Rch

W516

100

F

G

H

I

J

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

41

40

50

39

35

E2P-ROM

C254 0.22u50 W162

R263

C257 1u50 +

R257

6.2K

Q251
47K

W409 R261

C255 1u50 +

IC12
W158 1 2 3 WP 7

R20 3.3K

R10 30K

D10

C251 0.22u50

750

+

D253

D251

10K

A0 A1 A2 GND

W406 R254

W405 R251

R256

4.7K

4.7K

1K

C258 16 7.3V 1u50 + 18 0V

D252 R258

SCL

6

5V 0V 5V 0V
ADA

ACL SCL

D20 33K

C256

R260

R21

TH1 470

VCC

8

5.0V 0V

1/2W

SURGE DETECTOR Q70 D70
R72 36K R68 10K 15 15 R-QUAL PS1-1 46

R22
R73 100K

R71 82K

0V

4

Q20
SDA
10K

10K C21 0.01
R11 50

3.4V or 22 4.1V

14.4V 0V

20 14.4V

12 7.2V

14 7.2V

10 7.2V

0V 4.9V

SDA
24 0V

5

VCC1

PGND1

PGND2

OUT4+ PGND3

MUTE

VCC2

SVR

IN2

ACGND

PGND4

STBY

IN4

IC4
W156

2

4

6

8

R564 10K

R563

A. C. C DETECTOR
5.0V

0V
0V

R201 47K

Q10
0V
10

OUT2+

OUT1+

OUT3+

OUT2-

OUT1-

OUT3-

OUT4-

SGND

HSD

TAB

5.0V
14

IN1

IN3

13

12

11

D40

11

21

1

VCC

IC8
MUTE LOGIC

13

15

19

23

17

25

3

5

7

9

9

8

B. U. DETECTOR

C40 0.01

7.3V

7.3V

7.2V 7.2V 0V 7.2V 7.3V

7.4V

7.3V

7.4V

7.4V

0V

R23 100K

R12 100K

D268

D264

D265

D262

D266

D263

D261

RR+

D267

F

FR+

RL+

RR-

FL+

FR-

1

2

3

5

6

RL-

FL-

C404

C252 22u50 C253 22u50

W407 R252
4.7K

0V
0.01

R415

W408 R253
4.7K
12

1

8

100K

5.0V 0V

0V

4

0V

7

POWER AMPLIFIRE

GND

L101
C586 0.1

C587

C588

C585
W509

0.47

GND

OUT

W510

C589

CF52 10.700MHz

C583 0.1

W511

D101

59

58

56

57

55

CF53 10.700MHz

0.1 Q252,253

R123 1K

R126 100K

54

C590

1

2

3

Q252
5.0V
VDD

IN

0.1

C102 0.01

0.01

0.01

C101 100u6.3 + C103 0.1

CF54 450kHz

C592

4.7uH

R122 100

R125 1K

SMETERRC & MPTHTC SW
C584 4.7u16 +

Q253
4.4V

VSS VOUT

IC11

4.0V

4.2V 4.2V

60

59

58

50

49

48

57

56

55

54

53

52

NC

51

LO/EJ

PS2-1

DSI

M-MUTE

CD-SW3

RESET

M-RST

AMMIX2IN1

AMIF2AMPIN

AMMIX2IN2

SMETERC

FMDEM AMIF2AMP REF

DEMGND

FMAMP2OUT

AMMIX2OUT

FMIFAMP2IN

FMDEMREF

AMAGC2TC

8.0V

0V
R128 2.2M

5.0V 0V
R127 2.2K 61 62

TUNER CHANGE FM AM FM

5V 0V 4.2V 2.4V 0V

MPTHTC RDSMUTE

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

M-STOP

MOSW

PS2-0

REMO R-CLK CH-REQC

FM 3.2V 2.0V 0V

2.0V 0V

AM FM AM

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

5.0V 0V 2.6V 0V

AUDIOMUTE 57 QUALITY 56 4.0V SMETER 55 0V SD 5V 0V 54 5V SCL 0V 53 SDA

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

5.0V 0V 5.0V 0V

5.0V 0V 5.0V 0V or 0V

R414 100K
R129 2.2K

63

5.0V 0V

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

AM PW-ON

IC10
TUNER & E-VOL.

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

C104 15P 51 C105 15P

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

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

66

IC1
SYSTEM CONTROL u-COM

5.0V 0V 5.0V 0V 5.0V 0V 5.0V 0V 5.0V 0V
L-DATAL AVREF1 L-DATAS L-CE R-DATA 14 L-CLK

IN1R

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

3.4V 0V 2.4V 0.8V
27 XTALD 0V 28 DIGGND PLLVCC XTALG

4.8V 3.4V
8.0V 29 DIGVCC 30 TUNQUALITY 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

46 45 44 77

C106 R134
2.2K

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

77 78 79 80

W578

NOISE PHONE
PANEL

5.0V 0V 5.0V 0V
8EJE SW

ACLOUT
ACRIN

N.C AVCONT

ACLIN ACROUT

L-RST

AVSS

ADA

8.0V 25

26

35

36

38

39

R121 2.2K 12

R107 2.2K 13

10

R106 100K

4.7uH

R103 1K

R104 1K

RR

FR

RL

SDA

C551

SCL

11

12

L516 4.7uH

0.01

L515 4.7uH

C560 100P

X34-3102-7x (2/4)

19

13

1

2

5

6

C593 1

FL

10.250MHz

C562 10u10 +

R413 100K

L514

C553

C552 0.01

R105 470

X501

R102

1K

5.0V

C556 1000P

3.9V 3.9V 3.9V 3.9V

3.0V

0V

14

W501

11

1

2

3

5

6

8

4

7

9

8.0V

37

40

ACL

N.C

N.C

PS1-2

BEEP

N.C

60

3

4

N.C

71

69

68

70

67

66

65

64

63

62

61

47

L509

POWER ON RESET

0V

R67 10K

0V or 5.0

R69 10K

0V
1

CP3 1Kx2

CP2 2.2Kx2

CP1 10Kx2

2

10K

K

L

M

N

O

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G
DC CONNECTOR
(F1 10A)

J2 2
1

4 3

6 5

8 7

10 9

12 11

14 13

16 15

FUSE

L1 140uH

4.7K

D10
RR+ FR+ RL+ RRFL+ FRRLFL-

0V

1

GND

D14

VIOL/BLK

P-CON

VIOL/BLK 6 11

GRN/BLK

GRN/BLK

E CTOR D70
R72 36K
R71 82K

GND

D13
C51

C50 10u25 +

R28

14.0V

2

VIOL

REAR R

REAR L

IC7

TEL MUTE

POWER SUPPLY (MULTI AVR)

IC1 IC4 IC6 IC7 IC8 IC10 IC11 IC12

: : : : : : : :

P-CON

REAR Lch+

REAR Lch-

REAR Rch-

PHONE

REAR Rch+

P-ANT

FRONT Lch-

FRONT Lch+

FRONT Rch-

FRONT Rch+



GND

ACC

B.U.

TDA7479AD BA4911-V4 HD74HC27FP TDA7513T PST3435UL BR24C01AF-W or M24C01-WMN6T or S-24CS02AFJ-TB
GRN

BU

SIGNAL LINE GND LINE B LINE

W410

BRN

R25

D12

6 11

5 12

7 10

7 10

5 12 GRY

4 13

2 15

1 16

8 9

4

BLU

BLU/WHT

WHT

RED

WHT/BLK

WHT

BLK

WHT/BLK

GRY/BLK

C30 0.01

7.9V

5

Q51

ANT. CONT

8.1V

6

FRONT R

FRONT L

R32

22K

TOR

1.5K

R57

R31
47K

SERVO AVR Q55
C63 22u16 +

C54 10u16 +

L2

14.3V
C58 100u16 +

7

D1

+

D51

C1 3300u16

27uH

VCC

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 11 1 SW2 10.3V 12 ILLUM

5.0V

9

VDD

: 1N5393G-M6 D1 : IMSA-6801 D3 D10,20,70,201,202,401, : MA4068(N)-M 402 : D1F60 D11,13 : AM01ZNF D12,14 D40,101,251-253 : 1SS133 : DAN202U D50 : MA4082(N)-L D51 : DA204U D103 D106,108,109,403-405, 407-410 : MA4062-L : UDZS12B D110 : MA3062WA D411 D501,503 : RN739F D504-506 : KV1720S

P. CONT OUT

AUDIO+B

DC CORD (E30-6322-05) KDC-205/CR KDC-105/126/126S KDC-2026/3026/226

GND

ACC

DC CO (E30-60 RX-292

Q53

R145 54 2.2K

CN1
22 SW3 21 SERBOGND 20 SERBO+B

41

D102
R255 33K R264 47K R68 10K R69 10K

R101 240

R67 10K

B
5.0V 0V
40

Q101 DSI DRIVER
5.0V 0V

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

47

46

45

44

43

42

PS1-2

PS1-1

PS2-0

PS1-0

SW5V

ACC-DET

B.U-DET

P-STBY

41

0V or 5.0V 5.0V 0V

R142

5.0V 0V

DATA

36 R115 1K

4.7K

or 0V

SVR 40 39 R259 22K 39 P-MUTE 5.0V ADJ R174 R108 0V 47K 38 2.2K N.C 37 R117 37 CLK 1K R118 10K 36 R116 10K 2

to MECHA (X32- : CN2)

7 6

35 35 MUTE R119 47K 5.0V 0V 34 0V or 5.0V R114 47K TUNER-TYPE0 33 0V Vss1 R113 47K 32 TUNER-TYPE1 R139 47K 31 TYPE0 R140 47K 0V or 5.0V R137 47K 30 TYPE1 R138 47K TYPE2 N.C 29 28 27 R110 4.7K 26 25 24 23 22 21 R58 470

36 37 64 66

W165

5 MSDA 4 MSCLK 3 SW1 2 SW2 1 D OUT

R141 4.7K R143 4.7K

C142

0.1

D103

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

Q102
47K

TYPE REF

5.0V

5.0V 0V V

10K

5.0V 0V

SD CH-CON N.C N.C N.C AFS

PANEL5V SW
60 5 11

D109

59

CH-DATAH

CH-DATAC

CH-REQH

5.0V 0V
6

D106

5.0V 0V 5.0V 0V 5.0V 0V
R-QUAL CH-CLK

R168 1K
R167 100

6 7 8

RST L-RES L-DATAL

X16J1 2/2

R-DATA

R166 1K R165 470 R164 470

L-CLK

9

L-CE

N.C

A

13 12

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

R107 2.2K 13

15

16

18

19

14

17

20

R170
1K

R413 100K

R412 100K

61

R171
47 R172

13

14

15

16

17

18

19

D108

25

1

1K

P1

D111

R175

R176
1K

WH2
WIRED REM.

20

X34-3102-7x (3/4)

10K

ANT CONT

D30

A

SERVO AVR CONTROL

C53 10u16 +

AM+B

GRY/BLK

GRY

R30

10K

BLU

TEL MUTE

C52 10u16 +

FM+B

Q40 Q50 Q51,53 Q55 Q102 Q223,224 Q251 Q252 Q253 Q501 Q502

8 9

P-ANT

4 13

3 14

D11

10u25 +

4.7K

14.0V 8.1V

3

Q10,20,70,101,201,503 : 2SC4081 : DTA124EUA : 2SA1036K : UMC2N : 2SD2375 : DTA114YUA : DTC143TUA : DTC114YUA : UMG4N : UMA1N : CPH5905 : 3SK126

VIOL

GRN

YEL

P

Q

R

S

T

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G
1
WHT WHT/BLK GRY/BLK GRY BLU GRN GRN/BLK VIOL/BLK VIOL

FL+ FLFRTEL MUTE

8 9 7 10 6 11 5 12 4 13

RL+ RLRRRR+

FR+
BATT

ANT. CON P. CON

BLU/WHT
VIOL/BLK

RED
VIOL BRN YEL

3 14 2 15 1 16

BRN YEL

TEL MUTE

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.

BLK

6 11

5 12

4 13

7 10

3 14

2 15

1 16

BLU

BLU/WHT

RED

GRY/BLK

GRY

ANT. CONT

P. CONT

ACC

BLK

2

GND

BU

A P-CON

2 1

4 3

6 5

8 7

ACC

DC CORD (E30-6027-05) RX-292CD

B

2 1

4 3

6 5

8 7

DC CORD (E30-6286-05) KDC-3026R KDC-4027/V/Y/YV KDC-308A/AY/G/GY KDC-3027A/AY/G/GY KDC-2027SA/SAY/SG/SGY KDC-F327A/G

RR+ RRFR+ FRFL+ FLRL+

RL-

3
KDC-4027 (1/2)

(X34-31xx-xx)
MODEL NAME KDC-4027/Y KDC-4027V/VY KDC-3027A/AY KDC-308A/AY KDC-F327A KDC-3027G/GY KDC-308G/GY KDC-F327G KDC-2027SA/SAY KDC-2027SG/SGY KDC-3026R KDC-205 KDC-105 KDC-205CR KDC-3026 KDC-2026 KDC-226 KDC-126/S RX-292CD UNIT A E No. 02-70 YES 02-71 YES 02-72 YES

B

C

D

F

C51 C106 C404 NO 1000P YES NO 1000P YES NO 1000P NO

YES YES YES YES YES YES YES YES YES NO YES NO

CF52, C537, C590, C529,557, C522,523, C226, CN3 C553 C568 C581 C587 C589 C256 C502 C521 528,530 C524 C525 C526 558,594 C536 53 538 592 227 4P 8P 0.047 220P 2P 820P NO YES L72-0716-05 NO NO YES 100P 0.01 5P YES 33u50 1500P 0.1 4P 8P 0.047 220P 2P 820P NO YES L72-0716-05 NO NO YES 100P 0.01 5P YES 33u50 1500P 0.1 YES 100u50 1500P 0.1 YES 100P 0.01 5P NO 4P 8P 0.047 220P 2P 820P NO YES L72-0716-05 NO

02-73 02-74 00-21 10-12 10-13 10-14 10-21 10-22 10-23 10-24 10-01

YES NO YES NO NO NO NO NO NO NO NO

YES YES

NO NO

YES YES

NO NO

NO 1000P NO 1000P

NO NO

YES 100u50 1500P YES 100u50 1500P YES NO NO NO NO NO NO NO NO 33u50 33u50 100u50 100u50 33u50 33u50 100u50 100u50 33u50

0.1 0.1

YES YES YES YES YES YES YES YES YES YES NO

100P 100P

0.01 0.01

5P 5P

NO NO NO NO NO NO NO NO NO NO YES

4P 4P 4P 4P 4P 4P 4P 4P 4P 4P 15P

8P 8P 8P 8P 8P 8P 8P 8P 8P 8P 4P

0.047 220P 0.047 820P 0.047 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 220P 820P 820P 820P 820P 820P 820P 820P 820P

2P 2P 2P 2P 2P 2P 2P 2P 2P 2P 3P

820P 0.01 820P 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01

NO YES NO YES YES YES YES YES YES YES YES

YES L72-0716-05 NO NO YES NO NO NO NO NO NO NO NO L72-0716-05 NO L72-0716-05 L72-0781-05 L72-0781-05 L72-0781-05 L72-0781-05 L72-0781-05 L72-0781-05 L72-0781-05 L72-0781-05 NO NO NO NO NO NO NO NO NO

4

YES YES YES YES NO 1000P YES YES NO YES YES NO 1500P NO NO NO YES NO NO 1500P NO YES NO YES NO NO 1500P NO YES YES YES YES YES 1500P YES YES YES YES YES YES 1500P YES YES NO YES NO YES 1500P NO NO NO YES NO YES 1500P NO NO NO NO YES YES 1500P NO

1500P 0.1 1500P 0.1 1500P 0.1 1500P 0.1 1500P 0.1 1500P 0.1 1500P 0.1 1500P 0.1 0.01 0.47

5P 100P 0.01 100P 0.01 5P 100P 0.01 5P 100P 0.01 5P 100P 0.01 5P 100P 0.01 5P 100P 0.01 5P 100P 0.01 5P 22P 1000P 10P

UNIT D11, D13, D106, R28, R31, R102, Q252, Q40 Q53 Q102 Q251 R67 134,168 R135 R136 R137 R138 R139 R25 D109 D111 IC1 IC4 J3 L505 L506 L507 521 32 12 14 108,110 253 No. YES NO NO YES YES YES YES YES YES UPD780058GC554 TDA7560 E58-0879-05 L31-0967-05 L31-0970-05 L32-0936-05 YES NO YES NO YES YES YES YES NO 02-70 YES YES YES NO NO YES YES YES YES YES YES UPD780058GC554 TDA7560 E58-0879-05 L31-0967-05 L31-0970-05 L32-0936-05 YES NO YES NO YES YES YES YES NO 02-71 YES YES 02-72 YES YES YES YES YES UPD780058GC554 TDA7386 E58-0879-05 L31-0967-05 L31-0970-05 L32-0936-05 YES NO YES YES YES YES YES YES NO YES YES NO NO YES NO

5

02-73 YES YES 02-74 YES YES 00-21 10-12 10-13 10-14 10-21 10-22 10-23 10-24 10-01 YES NO NO NO YES YES YES YES YES YES YES YES YES YES YES YES YES NO

YES YES YES YES NO YES YES YES YES NO NO

YES NO YES NO NO NO NO NO NO NO NO

YES UPD780058GC554 TDA7386 E58-0879-05 L31-0967-05 L31-0970-05 L32-0936-05 YES NO NO NO NO NO NO NO NO NO NO UPD780058GC555 TDA7386 E58-0879-05 L31-0967-05 L31-0970-05 L32-0936-05 YES UPD780058GC554 UPD780058GC555 UPD780058GC556 UPD780058GC555 UPD780058GC555 UPD780058GC555 UPD780058GC555 UPD780058GC556 UPD780058GC556 TDA7560 TDA7560 TDA7386 TDA7386 TDA7560 TDA7560 TDA7386 TDA7386 TDA7560 E58-0879-05 E58-0879-05 E58-0880-05 E58-0879-05 E58-0879-05 E58-0879-05 E58-0879-05 E58-0880-05 E58-0880-05 L31-0967-05 L31-0967-05 L31-0967-05 L31-0967-05 L31-0967-05 L31-0967-05 L31-0967-05 L31-0967-05 L31-0966-05 L31-0970-05 L31-0970-05 L31-0970-05 L31-0970-05 L31-0970-05 L31-0970-05 L31-0970-05 L31-0970-05 L31-0969-05 L32-0936-05 L32-0936-05 L32-0936-05 L32-0936-05 L32-0936-05 L32-0936-05 L32-0936-05 L32-0936-05 L32-0932-05 YES YES YES YES YES YES YES YES NO

NO NO NO NO NO NO YES YES YES YES YES

YES YES YES YES NO YES YES YES YES NO NO

YES YES NO NO YES YES NO NO YES YES NO

YES NO YES NO NO NO NO NO NO NO NO

YES YES YES YES YES YES YES NO NO NO YES YES YES YES YES

NO NO

YES NO YES NO NO NO NO NO NO NO NO

NO YES NO YES YES YES NO NO YES YES YES

YES NO YES NO NO NO YES YES NO NO NO

NO NO YES NO NO NO YES YES YES YES YES

YES YES NO YES YES YES NO NO NO NO NO

NO NO YES YES YES YES YES YES YES YES NO

YES YES NO YES NO NO YES NO NO YES NO YES YES NO YES YES NO YES YES NO YES YES NO YES NO NO YES

6
UNIT R170, R251-254, W402, R412W405- W410, R525 R529 W160 W401 R140 R142 R173 R175 R176 256,260 R258 R261 R263 WH2 403 W404 409 414 171 578 W524 WH1 No. YES YES NO YES NO NO NO NO YES YES NO YES NO NO 220 10 4.3K YES 330 NO NO 02-70 NO 4.3K YES 330 NO YES YES NO YES 10 NO 220 NO NO NO YES NO YES NO YES NO NO 02-71 NO 02-72 YES NO NO NO YES YES YES 100 430 180K NO 330 NO NO NO NO NO NO YES YES NO YES

02-73 YES 02-74 YES 00-21 NO 10-12 NO 10-13 NO 10-14 NO 10-21 NO 10-22 NO 10-23 NO 10-24 NO 10-01 YES

NO NO NO NO NO NO NO NO NO NO YES

NO NO YES NO NO YES YES YES NO NO NO

NO NO NO NO NO NO NO NO NO NO NO

YES NO NO NO NO NO NO NO NO NO NO

YES NO NO NO NO NO NO NO NO NO NO

YES YES NO NO YES YES NO NO YES YES NO

100 100 220 220 100 100 220 220 100 100 220

430 430 10 10 430 430 10 10 430 430 10

180K 180K 4.3K 4.3K 180K 180K 4.3K 4.3K 180K 180K 4.3K

NO NO YES NO NO NO YES YES NO NO NO

330 330 330 820 820 820 820 820 820 820 820

NO NO NO NO NO NO NO NO NO NO YES

NO NO NO YES YES YES NO NO NO NO NO

NO NO NO NO NO NO NO NO NO NO YES

NO NO NO NO NO NO NO NO NO NO NO

NO NO NO NO YES NO NO NO NO YES YES

NO NO YES YES NO NO YES YES NO NO YES

YES YES YES NO NO NO NO NO NO NO NO

YES YES YES YES YES YES YES YES YES YES NO

NO NO NO NO NO NO YES NO NO NO NO

YES NO NO NO NO NO NO NO NO NO NO

7

X34-3102-7x (4/4)

21

U

V

W

X

Y

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G
1
SWITCH UNIT (X16-246x-xx)

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 47 S49 S16 S16 16 S28

2

ED1 (COMMON)

S51

S11

S41

S52

S12

S42

S21

S22

S15

S16

S48

S45

S46

S43

S56

S55

S53

S49

S50

S10

S13

S40

S39

S38

S36

S35

S18

S19

S20

S23

S54

S14

S17

S47

S44

S37

S24

S25

S26

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

S27

3

ED1 (SEGMENT)

D36
J1
TP14

A

IC2

KS5

C1

S56

S55

S53

S52

S51

SW Q1
10K

KS4

KS3

KS2

4

ESD-GND PANEL SW 14 SW5V REMO 12

15 TP12 13 TP11 TP10 R9 1K R8 470 R7 470 R6 470 R5 1K TP13 +5V R10 47 R11 1K 80 79 78 77

REMOTE CONTROL IC
2.2 C5

C3

C2

S50

S54

S48 S17 S17 17

48 18 S S47

1

2

3

4

5

6

7

8

9

5.0V 5V 0V

60

10K

IC2
1 GND2 OUT

KI1 KI2 KI3 KI4 KI5 +5V C3 0.047

65 66 67 68 69 70 71

KI1 KI2 KI3 KI4 KI5 VDD VDD1

TP9 L-CLK 10 TP8 L-CE 9 TP7 L-DATAL L-RES 8 TP6 7 TP5 RST 6 TP4 +B TP3 3 2 1 TP2 +5V TP1 D-GND

VCC

X34J3 1/2

L-DATAS

11

5V 0V 5V 0V 5.0V 3.3V

A

2

4

GND1

S23
0V

+5V

5

76

VDD2 1.6V 0V 73 VSS 0V 74 TEST R1 56K C1 75 OSC ON OFF L-RES L-DATA L

C4 0.047 72

RESET
R3 4.7K R4 47K

LED+B NC 4 ILL-GND PAN 5V

5

1000P 76 77

5V 0V

R2 4.7

76 77

5V 0V 5V 0V 5V 0V
GREEN RED

78 79 80

5V 0V 78 L-CE 79 L-CLK 80 L-DATA S

0.01

C2

D31

D32

D33

D34

D35

KEY

S10

S11

S12

S13

S14

S8

S4

S5

S6

S7

S9

6

11

1

10

12

2

13

R13

R12

2.2K

2.2K

ESD-GND

S11

S10

S12

S13

14

S8

S5

S4

S6

ON

+B

Q2,3

+B

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.

22

X16-2462-7x (1/2)

W2

KEY ILLUMINATION SW

S7

S9

OFF

Q3

Q2

S14

S15

15

3

5

6

4

7

8

9

S15

59 S56 58 COM3 57 COM2 56 COM1 55 S55 54 S54 53 S53 52 S52 51 S51 50 S50 49 S49 48 S48 47 S47

64

63

62

+5V

61

KS6

KS5

3

KS4

KS3

KS2

IC1
LCD DRIVER

S29

S5

S6

S8

S4

S7

S9

48

1

2

3

4

5

6

7

8

9

S15 S49 S48 S47 S46 S45 S44 S43 S42 42 41 S41 54 55 56 S34 S42 53 S43 S33 52 43 S44 S32 44 51 S45 S31 45 50 S46 50 51 52 53 54 55 56 C1 C2 C3 S30 46 S47 49 49 47 S29 S48 48 48 48 S28 S49 47 47 49 S27

15 S50 S50 46 46

S16

16

S15

50

S17

17

S16

S18

18

S17

S19

19

S18

S20

20

S19

S21

21

S20

S22

22

S21

Z

S23

23

S22

S27

S34

S37

S30

S33

S35

S25

S26

S28

S29

S36

S38

S39

S40

S32

S31

S24

24 S41

S23

S24

30

31

37

D8
270 270 C11

D7
KI4 KI5 KI3 KI2

R42 R41
220 220

25 35 36 38 39 40 S27 S34 S37 S28 S29 S30 S35 S33 S36 S38 S39 S40 S32 S31 S25 S26

26

27

28

29

D1
R22 R21

BACK LIGHT

D10
TP37 TP34 TP38 TP36 TP35 TP33 TP32
R23 430 220

: LC75883E : RS-171

Q1 : DTA114EE Q2,3 : 2SC4617

D9
R29

0.01

32 KI1 TP30 TP29 TP31

33

34

IC1 IC2

AA

D3
D2

S6

VOL UP FM S16 AM S21 AUD VOL
TP21

S1

S11

D13
R31
TP22 300 270

CLK

D1 D2 D3 D4,6-19,21-19 D31-35 D36

D23
TI

VOL DOWN

C12
+B
KS2 0.01

Q & SRC

D12 D21
R28 R27
S17 S22
TP23 KS3 TP24 270 270

D11 D6 D4
C13
0.01

R25 R24

S7

S2

6

5

4

D22
+B

S12

: : : : : :



TI

ATT

+B

· DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual instruments or/and units.
S8 S3 1 2 3 ATT S19 S18 S13 UDZS5.6B DA204U

AB

B30-1633-05 B30-1567-05 B30-1564-05

D16
R32
TP25 KS4 TP26

D15 D24
1
TP27

D14

D26

D25

S4

S9

S5

S14

S10

VOL UP

S20

S15

VOL DOWN

SRC

5

D19
R33

D29
FM AM

4

3

D18 D27

D28

2

+B

D17

KS5 TP28

6

GND LINE B LINE

CLK

AC

KDC-4027 (2/2)

+B

(X16-246x-xx)
R12,13, R27, UNIT Q2,3 D7,8 D9,10 D11-19 D36 ED1 D3 D4 D6 D21-29 A C12 C13 24,25 28 No. NO NO NO 2-70 YES NO YES B30-1564-05 B30-1567-05 B30-1533-05 B30-1567-05 B30-1533-05 YES B38-1144-05 YES YES NO NO NO 2-71 YES NO YES B30-1564-05 B30-1567-05 B30-1533-05 B30-1567-05 B30-1533-05 YES B38-1137-05 YES YES B30-1567-05 B30-1533-05 NO B38-1145-05 YES YES NO NO NO NO 0-21 YES YES YES B30-1564-05 B30-1564-05 NO B30-1567-05 NO B38-1144-05 NO NO YES NO B30-1567-05 NO 2-73 NO NO NO B30-1567-05 B30-1567-05 B30-1533-05 NO B38-1144-05 NO NO NO YES NO NO B30-1533-05 2-75 NO NO NO B30-1687-05 B30-1687-05 NO B30-1567-05 NO B38-1145-05 NO NO YES 2-72 NO NO NO NO B30-1567-05 NO B30-1567-05 B30-1567-05 NO B30-1533-05 NO B38-1145-05 NO YES 2-74 NO NO NO B30-1533-05 NO NO B30-1687-05 B30-1687-05 NO 2-76 NO NO NO NO B30-1567-05 B30-1567-05 NO B30-1567-05 NO B30-1567-05 NO B38-1137-05 NO NO YES 2-77 NO NO NO NO B30-1687-05 B30-1687-05 NO B30-1533-05 NO B30-1533-05 NO B38-1137-05 NO NO YES R29, 41,42 YES YES NO YES YES YES YES YES YES R3133 330 330 330 390 330 390 330 390 330 W2 NO NO NO YES YES YES YES YES YES

MODEL NAME

KDC-4027/Y KDC-4027V/VY KDC-3026R KDC-3027A/AY KDC-3027G/GY KDC-308A/AY KDC-308G/GY KDC-F327A KDC-F327G

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

X16-2462-7x (2/2)
5

AD

23
4 3 2 1

7

6

AE

AF

AG

AH

AI

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G
1
SWITCH UNIT (X16-247x-xx)

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

10

11

12

13

33 33 41 9 C2 S8 S8 COM2 S41

2

ED1 (COMMON)

S21

S31

S22

S30

S29

S28

S18

S20

S26

S25

S23

S12

S35

S33

S32

S19

S13

S15

S16

S38

S36

S40

S39

S24

S27

S17

S14

S34

S37

S10

S11

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

S5 42 8

3

4

ED1 (SEGMENT)

J1
ESD-GND 15 PANEL14 SW SW5V REMO 12 13

TP14 TP13 TP12 +5V TP11 TP10 R9 1K R8 470 R7 470 R6 470

IC2

KS5

KS4

KS3

KS2

S41

48

47

46

45

44

43

+5V

49
10K

KS6 KI1 KI2 KI3 KI4 KI5 TEST

(BOTTOM VIEW)

L-CLK 10 TP8 L-CE L-DATAL N.C 8 7 TP5 RST 6 LED +B N.C 4 ILL-GND PAN 5V D-GND 2 1 3 +5V TP1 5 TP4 +B TP3 9 TP7

63

1

X34J3

L-DATAS

11 TP9

64

3 5.0V

KI1 KI2 KI3 KI4 KI5

50 51 52 53 54

5V 0V 5V 0V

1/2

62 61

OUT

VCC

5

IC2

GND2

GND1

0.01

C2

A

0V 55

RESET S23
0V

6

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.

56 VDD +5V C3 0.047 57 VDD1 C4 0.047 58 VDD2 0V 59 VSS

2

4

5.0V 3.3V 1.6V

LCD DRIVE

R1 56K

TP2 R2 4.7

R3 4.7K 61 62 63 64

C1 1000P

60 61 62 63 64

OSC DO DE CL DI

5V 0V

+B

5V 0V
KEY

5V 0V
N.C N.C N.C S5 S6 S7 S9 S9 10

D32 D33 D34 D35

1

2

3

5

4

6

OFF
S5 S6 S7

ON

7

24

X16-2472-7x (1/2)

7

COM3

IC1

COM1

KS5

KS4

KS3

KS2

R11 1K

S41

A

Q1
10K

40

R10 47

2.2

C5

KEY DETECT SW

C3

C1

REMOTE CONTROL IC

34

1

2

3

4

5

6

7

8

9

34

1

2

3

4

5

6

7

8

9

S7

7 COM3 COM2 COM1 S40 S39 S38 S37 S36 S35 S34 S33 S33 33 S34 40 34 S35 35 39 S36 36 38 S37 S6 37 37 S38 S7 38 36 37 38 39 40 C1 C2 C3 36 S39 S9 39 35 35 S40 S8 40 34 34 C1 41 S41 C2 33 33 42 S5 C3 32 32 S11

IC1

S8

8

S7

43

CD DRIVER

S9

9

S8

S10

10

S9

S11

11

S10

S12

12

S11

AJ

S13

13

S12

S14

14

S13

S15

15

S14

S16

16

S15

S16

S17 S23 S25 S26 S28 S29 S30 S22 S32 S21 S31 20 21 22 23 24 25 26 27 28 29 30 31 32 S24 S27 S25 S23 S26 S28 S29 S30 S22 S32 S21 S31 KI4 KI5 KI3 KI2

S24

S27

S18

S19

S20

17

18

19

S17

S18

S19

S20

AK

D19
300 300 270

D16
R28 R25 R26 R23
270

D13 D1
C11 0.01

KI1

TP37

TP34

TP38

TP36

TP35

TP33

TP30

TP29

TP32

TP31

6
270 270

5

4

TI

D5

Q1 : DTA114EE

IC1 : LC75853NE IC2 : RS-171

R27

R24

CLK FM S16 AM S21 AUD

S6

S1

S11

D8
TP21 KS2 TP22

D6

BACK-LIGHT

D18 D3
C12 0.01

D15 D7
C13 0.01

D12

ATT

3

2

D4
TI CLK S22
TP23 KS3

S7

S2

6

5

4

S17

S12

AL

D1,3-8,11-19 : D2 : B30-1567-05 D32-35 : UDZS5.6B

D17
VOL
R22 220
TP24

D14

D11

1

FM D2
TP25

SRC

AM
R21 220
KS4 TP26 +B TP27 KS5 TP28

S8

S3

1

2

3

ATT

S19

S18

S13

R33
(X16-247x-xx)
MODEL NAME

R32
A
YES YES YES NO NO NO YES NO 0-23 NO D1 D3 D4

R31

ED1 :

S4

S9

S5

S14

VOL UP

S20

S15

S10

VOL DOWN

SRC

AM

D5

+B

KDC-4027 (2/2)
UNIT No. 0-11 0-21 0-22 2-71 2-72 0-13 0-01 0-10 C12, 13 YES NO YES NO NO YES YES NO KDC-2025V KDC-3026 KDC-2026 KDC-2027SA/SAY KDC-2027SG/SGY KDC-205 RX-292CD KDC-105 KDC-126/S KDC-226

B30-1633-05 B30-1633-05 B30-1633-05 B30-1633-05 B30-1633-05 B30-1633-05 B30-1633-05 B30-1633-05

B30-1564-05 B30-1567-05 B30-1687-05 NO NO B30-1564-05 B30-1690-05 B30-1567-05

B30-1564-05 B30-1567-05 B30-1687-05 B30-1567-05 B30-1687-05 B30-1564-05 B30-1690-05 B30-1567-05

NO B30-1567-05 B30-1687-05 NO NO NO B30-1690-05 B30-1567-05

R24, R27, D32D7,8 D11-19 D6 R23 R26 ED1 35 25 28 B30-1567-05 YES B38-1139-05 430 YES NO NO NO NO NO B30-1567-05 B30-1567-05 YES B38-1138-05 NO NO 390 YES B30-1687-05 B30-1533-05 YES B38-1140-05 NO NO 360 YES NO B30-1567-05 B30-1567-05 B30-1567-05 YES B38-1140-05 390 NO NO YES B30-1687-05 B30-1533-05 B30-1533-05 YES B38-1140-05 360 NO NO YES NO NO B30-1567-05 YES B38-1138-05 430 YES NO NO B30-1690-05 B30-1690-05 NO B38-1139-05 NO NO 360 YES NO B30-1567-05 NO B30-1567-05 NO B38-1140-05 NO NO 390 YES NO B30-1633-05 B30-1687-05 B30-1687-05 B30-1687-05 B30-1687-05 NO B30-1533-05 YES B38-1140-05 NO

R3133 390 390 330 390 330 390 330 390 NO 360 YES 330

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

X16-2472-7x (2/2)
5

AN

GND LINE B LINE

25
4 3 2 1

7

6

AO

AP

AQ

AR

AS

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G
1
CD PLAYER UNIT (X32-5490-00/01)

R18 4.7

L1 600

C19 0.1 X2 16.934 MHz

R R17 4.7

12

13

11

G

8 5.0V R16 1K

C17 1

C16 1

R15

CP5 1K

10

L

9

8

R19 100

C20

10

100 RF1
33 32 31 30 29 28 27

7
1 R

1.65V

3.3V

3.3V

16 1.65V

14 3.3V

15 3.3V

19 0V

0V
25 24 23
C21 0.1

17 0V

20

18

13

12

11

22

21

10

9

7 INTQ ADVDD 71 C33 3300P

0V
5.0V
NC NC X1 VPP

XGND

XVDD

SI

REGC

STB

SO

LOUT

ROUT

DAGND

DAVDD

3.3V 0V

DVDD

2

FZD TZD

27 28

1.65V
C1D1 C1D2 RZM

5V 0V 5V 0V

A0

26

DAVDD

XTAL

XTAL

3.3V

DAGND

DVDD

SCK

RST

5.

3.3MHz 1.5MHz

29 30 S4 X32-5490-00 NO X32-5490-01 YES

CP6 1K 0V 29

LOE & LIM SW S3

LOCK MIRR

0V 30 LZM 31 SHOCKD 32 LOCK 0V 33
WFCK/MIRR RFCK/HOLD

3.3V 0V

CN2
D.OUT 22 12EJE SW 21

12EJE SW S2

R3 1K

HOLD 0V 34 30 35

IC3
CD RF/SERVO/ DSP/DAC IC

3
LOS SW 20 CLK 19 DATA 18

LOS SW S1
CP3 100 20 21

to ELECTRIC UNIT (X34- : CN1)

S4
8EJE SW 17 NC 16 BU.+5V 15 D.GND 14 MUTE R 13 MUTE L 12

8EJE SW

TESTEN

MD+

10 11 R14 100 R13 100

51

52

61

62

EFM ASY

SD+

FD+

TD+

MD-

SD-

FD-

TD-

CP1 100

ADGND

TEST4

TEST3

TEST2

TEST1

TEST0

DGND

PLCK 36 C16M 0V 37 DGND R29 0V 38 TX 39 100 EMPH 0V 40 FLAG FLAG 3.3V 41 DVDD 42 LIMIT 43 0V XTALEN 44 0V DGND 45 DIN 46 DOUT 47 SCKIN 48 SCKOUT 49 LRCKIN 50 3.3V LRCK 0V

C27 0.1

3.3V 1.65V 0V

3.0V 0.3V

DVDD

53

55

63

65

66

68

69

4

3.3V

R44 10K

MSTOP 10 A.+8V 9 Lch 8

12 R2 330 52 L 54 56 58

0V

R43 33K

Rch 6 LO/EJ 5 MOTOR 4

C44 1500P

C43 1500P

C46 1500P

C45 1500P

C1 2200P

R31 13K R30 100

C2

A.GND 7

G 24 22 R1 330

CP7 10K 30

CP8 4.7K

R

S.7.5V 3 S.GND 2 LOE/LIM SW 1

5.0V 0V 0V 5.0V
44 43 42 41 40 39 38 37 36 10 8 9

5
PON NC AVREF AVDD

35

VSS1

1.65V
1 BIAS FDINFDIN SPIN+ SPINVCC TDIN4.0V TDIN SLIN+ SLIN30 29 28 27 26

R41 4.7K

1.65V
330P

2 3 4 5

7.5V 4.0V
C35 330P R35 13K

R34 12K R36 12K

54 56 C36

1.65V 1.65V 1.65V

4.0V 4.0V
R38 4.3K
R37 12K

0V 0V 0V 0V 0V 0V

1 2 3 4 5 6

R40 13K R39

16K

NC NC NC NC NC NC

DSP RESET

C37

5V 0V

DRV MUTE LOE&LIM SW VDD0 VSS0

IC1
MECHANISM CONTROL IC

4700P 30 29

1500P

CP4 100K 7 8 ZMUTE L ZMUTE R

R42 18K

C38

2.5MHz 4.5MHz

6

(X92- )
SPINDLE MOTOR DM1 M DM2 M LOADING & SLED MOTOR
SLD+ SPD+ TRKSPDR32 1K

1.65V 0V

6 7 8

4.0V
SPIN GND SLIN LO/EJ 25 24 23 22

5.0V 5V 0V 5V 0V

0V 0V

24

5.0V 0V 7.5V 4.0V 4.0V 4.0V

9 10 11 12 13 14

10

MUTE GND VCC1 SPDSPD+

0V CNT
GND VCC2 SLDSLD+ TRTR+ 21 20 19 18 17 16

22 C28 2.2

9 0V AVSS 5.0V 10 MUTE L 5.0V 11 MUTE R 11

11

TRK-

16

13

14

15

SLD-

R6 100K

FCS+

IC4 4ch BTL
DRIVER

TRK+

R47 5.6K

13

R46 5.6K

12

7

20

21

FO- 4.0V 15 FO+

7.5V 4.0V 4.0V 4.0V
12

0V 13 INTQ 5.0V 14 FOGUP 5.0V 15 PON 16 SCK 5.0V 17 VDD1 18 SO 19 SI

MSTOP

26 X2 25 M RSET 24 5V XT1 23 0V XT2

DATA

12

21

0V

5.0V

20

22

R7 10K

7

26

X32-5490-00 (1/2)

10K

0.1

C3 2.2

C4

C6

0.1

R8

VPP

CLK

SERCH

58

52

STB

NC

NC

A0

34

C40 C39

2200P

C42 0.01

C41 0.01

R33

MRST 11

25

C34 0.1

0V

1.65V

3.3V 70

56

58

59

54

60

64

57

67

72

6

AT

AU

AV

AW

AX

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G
1
DIGITAL LINE AUDIO LINE GND LINE B LINE IC1 IC2 IC3 IC4 Q2 Q3 Q4 D2 D2 : 789166YGB-A513 : NJM2880U133 : uPD63712GC : BA5824FP : DTA114YUAF : 2SB0970 : DTC114YUAF : DAN202U

8

7

0V
C15 1000P

C12 0.1 C18 0.1

R20 4.7K

8 5.0V R16 1K

R15

100

APC
3.3V
1

3.3V

0V 0.2V

0V

RFOK
6 5

C13 10
R22 100K

Q3
R23 4.7 IOP2

DTA114EE DTC114YUA DTC143TUA 2SA1036K 2SC4617

DAN202U

7

4

3

2

PN

PD

DGND

INTQ

RST

RFOK

AVDD

LD

3.3V
100 98 97 C14 96 1500P TE
C23 47P

PWMSW AGND TEC TE2 TEO

R24

IOP1

5.0V

99 0V 100K

DA204U DTA114YUA
2

2SC4081

TEADCIN FEO

95 94 93
R26 270K

ADCIN

FE
C24 56P

LD

3SK126

FEREFC REFOUT AVDD VREFIN E F D B

92 91 90 89 88 87 86 85 84 83 82 81 80 79 A PD C+D C25 0.1

3.3V
C26 0.1 R27 3K R45 240 R28 C29 6800P ATEST B 3K F

CN1
1 VCC 2 VC 3 GND 4 LD 5 VR 6 PD 7 C+D 8 E 9 A 10 B 11 F
C31 1

DTA124EUA
3
DPU1 (X93- )

1.65V

0V 2.0V

0.3Vp-p

BR24C01AF-W

C A AGND C3T 0V

1.0V

0V

OPTICAL PICKUP

UMC2N

1Vp-p 1.7Vp-p
ADVDD ASY EQ2 RF1 RF2EQ1 RF-

ATEST RFO AGCI AGCO

78 1.65V 77 76 C30 0.1 RF 13 14 15 16 E

71

3.3V 70

72

73

74

75

12 GND 13 FCS+ 14 TRK+ 15 TRK16 FCS-

1.65V
C33 3300P 3.9K R33 C32 4P

4

ARF

C40 C39

0.1

33P

PLAY :H SERCH : L

Q4
R25 39K
47K

VREF

5.0V
34 R12 100K SERCH

10K

5
C22 6800P

SW 5V
NC NC
47K

SW

33 32 31 30 29 28

MUTE LIM SW VDD0 VSS0

10K

Q2

5.0V 0V
X1 4.19MHz

R10 5.6 1/2W

3.3V AVR
4.2V
5

IC2
4

3.3V

CNTL VIN

NB VOUT

MHz
26 X2 25 M RSET 24 V XT1 23 V XT2
VPP

C11 1

GND

X1

27

C9 0.1

MHz

0V
R9 100K C8 0.1

C10

0.01

5.0V

5.0V
R11 1K

1.2V

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.

6

1

2

22

0V

VPP
25

10K

R8

C7

0.1

0V

3

7

X32-5490-00 (2/2)

27

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

EXPLODED VIEW (CD MECHANISM)
A B
F

37

43 43

51
F

1

43
855

55 36 33
834 843

843

56 37
843 Jx2 H 850

43 2 37 53
Bx2

37

32
849 807 809

41 35

33 22
G 806

DPU1 5
E Ax2

8
2

40

15 44
Cx2 801

39

42 45 23 10 11 30 26 13 DFPC1 DM1
842 F

DM2 38 18 17

27 29 19 28 25 14 24

12

31

16

3

(X32)

52

A B C E F G H J

2x8
M1.7x8.5 M1.7x2.5 M2x2 2x6(BLK) 1.6 WASHER M2x2 2x3.5

: N09-4460-05 : N09-4472-05 : N09-6004-05 : N09-6007-05 : N09-6051-05 : N19-2163-04 : N39-2020-46 : N09-6108-05

858 F F

28

CD MECHANISM OPERATION DESCRIPTION is not in this sevice manual. Please refer to service manual for X92-4450-0x (B51-7889-00). Parts with the exploded numbers larger than 700 are not supplied.

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

EXPLODED VIEW (UNIT)
C D

229

215x2

D

208 210 244 DC1
1

201 A M3x8 B 2x6 C 2x8 (BLK) D 3x5 E 3x10 F 3x20 G 2.6x6 H 1.5 RING : N30-3008-46 : N80-2006-46 : N80-2008-45 : N83-3005-46 : N80-3010-46 : N83-3020-46 : N86-2606-46 : N29-0205-04 207 205 216 213
H

Dx2

DME1

225

224

214
704

WH2
C C 723 (X34-)

Cx2

755

248
2

(X16-)

249

245
J1
742

J5

D E

F

Fx2 E

J4

218 246 250
751 (X16-) 743

F1
J3
D (X34-) 753

247
J2

ED1

G

226 234 235 233 238
D B

722

FC1

236
3

232 239
728

B

240 237 211
708 D

PA1
A A

702

Parts with the exploded numbers larger than 700 are not supplied.

29

KDC-2027SA/SAY/SG/SGY, 3027A/AY/G/GY KDC-308A/AY/G/GY, 4027/V/VY/Y, F327A/G

PARTS LIST
New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. A N DestiRef. No. d e Parts No. Description nation d w
KDC-2027SA/SAY/SG/SGY, KDC-3027A/AY/G/GY, KDC-308A/AY/G/GY, KDC-4027/V/VY/Y, KDC-F327A/G

Ref. No. 211 211 211 213 214 215 216 218 DC1 DC1 FC1 F1 F1 224 225 226 229 232 233 234 235 236 237 238 239

201 205 207 208 PA1 PA1 PA1 PA1 PA1 PA1 PA1 PA1 210 211 211 211 211 211

1C A02-1486-13 2C A22-2863-03 2C A46-1796-01 1D A52-0804-02 3C A64-3165-02 3C 3C 3C 3C 3C A64-3166-02 A64-3166-02 A64-3167-02 A64-3167-02 A64-3168-02

PLASTIC CABINET ASSY SUB PANEL ASSY REAR COVER TOP PLATE PANEL ASSY PANEL ASSY PANEL ASSY PANEL ASSY PANEL ASSY PANEL ASSY PANEL ASSY PANEL ASSY WARRANTY CARD WARRANTY CARD WARRANTY CARD WARRANTY CARD ID CARD ID CARD ID CARD ID CARD ID CARD ID CARD ID CARD CAUTION CARD INST. MANUAL (ENGLISH) INST. MANUAL (ENGLISH) INST. MANUAL (ENGLISH) INST. MANUAL (ENGLISH) INST. MANUAL (FRENCH) INST. MANUAL (FRENCH) INST. MANUAL (FRENCH) INST. MANUAL (GER,DUT) INST. MANUAL (GER,DUT) INST. MANUAL (ITA,SPA,POR) INST. MANUAL (ITA,SPA,POR) INST. MANUAL (HUN,CRO,SLO) INST. MANUAL (HUN,CRO,SLO) INST. MANUAL (SWE,FIN) INST. MANUAL (SWE,FIN) INST. MANUAL (ENG,FRE,GER,DUT,ITA,SPA,POR) INST. MANUAL (ENG,RUS,POL,CZE,HUN) INST. MANUAL (CRO,SWE,FIN,SLO) INST. MANUAL (RUS,POL,CZE) INST. MANUAL (RUS,POL,CZE) ESCUTCHEON FRONT GLASS FRONT GLASS FRONT GLASS FRONT GLASS FRONT GLASS E : KDC-4027 E5 : KDC-308G Z : KDC-4027Y Z5 : KDC-308GY

A N Parts No. d e d w 3C B10-4462-01 3C B10-4462-01 3C B10-4463-01 1C 1C 1C 1C D10-4446-03 D10-4447-03 D10-4589-04 D21-2329-