Kenwood KDC-1022, KDC-122-P Service manual

CD RECEIVER

KDC- 1022 KDC- 122P

SERVICE MANUAL

CD mechanism extension cord : W05-0618-00

Panel assy (A64-3136-02): KDC-122P

COMPACT

DIGITAL AUDIO

OFF

Panel assy (A64-3135-02): KDC-1022

COMPACT

DIGITAL AUDIO

OFF

Front glass (B10-4437-01): KDC-122P

KDC-122P

RDMLOUD REPSCAN

Front glass (B10-4436-01): KDC-1022

KDC-1022

RDMLOUD REPSCAN

Escutcheon (B07-3022-02): KDC-122P

45W

CRSC

AMEAUTOADJCLK

Escutcheon (B07-3060-02): KDC-1022

50W

CRSC

AMEAUTOADJCLK

AUD

DC cord (E30-4784-05)

Mounting hardware assy (J21-9716-03)

Lever (D10-4589-04)

Screw set (N99-1719-05)

1200mV

CD : 3600mV CH : 3600mVAM(E) : 855mV

FM(E) : 1372mV

FM(J,K) : 1800mV AM(J,K) : 600mV

CHANGER

KEY MATRIX

WITH

LCD DRIVER

LCD

REMOCON

MI-COM

ANT

AM AGC

FM AGC

DECODER

RDS

RESET IC

EEP-ROM

TUNER,MPX & E-VOL.

SUPPLY IC

SW5V

SERVO

P-ANT

P-CON

POWER

MUTE LOGIC

DET

ACC

BU DET

MUTE

PRE

POWER IC

ACC

BACK

OUT

PRE

IC1

DATA H

MUTE

DATA C

REQ H

CH-CON

AUDIO OUT

CLK

REQ C

RST

BACK UP

BU5V

IC2

SW5V

LO/S

RST

LOE/LIM

LO/EJ

STOP

MUTE

8EJE

SDA

SCLK

AUDIO OUT

12EJE

Q501

Q502

AM+B

FM+B

AM AGC OUT

IC6

CH CD

SERVO BU5V

A8V

TUNER OUT

BU5V

IC11

IC12

IC10

FM AGC OUT

A8V

SW2

SW1

ILLUMI

VCC

BU5V

AUDIO+B

AM+B

FM+B

BACK LIGHT

KEY ILLUMI

Q51,55

SW5V

Q50

SERVO

BU5V FM+B

AM+B

A8V

P-CON

P-ANT

IC8

Q20

Q10

IC7

MUTE

Q223,224

IC4

KDC- 1022/122P

BLOCK DIAGRAM

KDC-1022/122P

COMPONENTS DESCRIPTION

● SWITCH UNIT (X16-2370-12/13)

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

IC1 LCD driver & key matrix Q1 Key scan start When Q1 base goes Lo, key scan start.

● ELECTRIC UNIT (X25-9600-13/14)

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

IC1 System control µ-com System µ-com IC4 Power amplifire E-Vol output encoder power amplification for speaker. IC7 Power supply (Multi AVR) -

When a pin 1, 2, or 13 is “H”, MUTE turns on.

IC8 MUTE Logic 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”. IC10 Tuner & E-Vol. FM/AM tuner & stereo decoder & E-Vol. IC11 Power on reset When B.U. 5V voltage is less than 3.5V, power reset. IC12 E2P-ROM Writing and read-out of adjustment data for a tuner. Q10 B.U. detector BU on (base “H”) : Collector “H” Q20 A.C.C detector ACC on (base : “H”) : Collector “L” Q40 MUTE driver Base “L” : Mute on (collector “L”) Q50 SW 5V Base “L” : SW5V on Q51 SERBO AVR control Pin 2 “H” : Serbo on (pin 4 “H”) Q55 SERBO AVR Base “H” : Serbo on Q70 Surge detector Base “H” : Surge detect Q223,224 MUTE Base “H” : Mute on Q251 Q501 AM RF amplifire Base “H” : Gain UP Q502 FM RF amplifire Gate “H” : Gain UP

MICROCOMPUTER’S TERMINAL DESCRIPTION

● SYSTEM MICROCOMPUTER : UPD780058GC501 (X25 : IC1)

Pin No. Name I/O Description Processing Operation

1 TDF DET I Panel detection H : Panel detached, L : Panel attached

2 8EJE SW I

3NCONot used (out put L) 4Avss

5 L-RST O LCD driver RESET ∆3 normal H , Power off L

6 L-CE O LCD driver selection

H : Eject is completed Except 8cm CD model : always output L

H : Panel detached, L : RESET

When 7 seg model, output L H : Select (panel communication) When panel attached, output L

KDC- 1022/122P

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Name I/O Description Processing Operation

7AVREF1 8NC Not used (connected to 9pin) 9 IC10-DATA I/O IC10, E2PROM data communication ∆3 non communication : H 10 IC10-CLK O IC10, E2PROM clock communication ∆3 non communication : H

11 L-DATAL I Data input from the LCD driver

12 L-DATAS O Data output to the LCD driver When panel detached, output L 13 L-CLK O Clock output to the LCD driver When panel detached, output L 14 R-DATA I Data input from the RDS Except RDS model : output L 15 R-QUAL I Quality input from the RDS Except RDS model : output L 16 CH-DATAC I Data input from the changer (new 5L) Except changer model : output L

17 CH-DATAH O Data output to the changer (new 5L)

18 CH-CLK I/O Clock input/output with the changer (new 5L)

19 CH-REQH O Request output to the changer (new 5L)

20 NC O Not used (output L)

21 AFS O Noise detection time constant switching terminal

22~24 NC O Not used (output L)

25 CH-CONT O Changer control

26 TYPE REF O 5V lines output for destination setting H : During destination reading 27 SD I Tuner SD input H : Station detected 28 NC O Not used (output L) 29 TYPE2 I Destination type selection terminal 2 Refer to destination type list. 30 TYPE1 I Destination type selection terminal 1 Refer to destination type list. 31 TYPE0 I Destination type selection terminal 0 Refer to destination type list. 32 33 Vss1 34

35 MUTE O Mute (E.Vol, Preset) control

36 M-DATA I/O Data input/output with the CD mechanism ∆3 non communication : H 37 M-CLK O Clock output to the CD mechanism ∆3 non communication : H

38 ADJ O Tuner lines adjustment

39 P-MUTE O Power IC mute control

40 SVR O Power IC servo control H : When momentary power down detected, L : Nomal 41 P-STBY O Power IC standby control H : Power IC ON, L : Power IC OFF

42 SW5V O SW 5V control

43 B.U-DET I Back up detection terminal H : power down, L : B.U. on 44 ACC-DET I ACC detection terminal H : ACC OFF, L : ACC ON

TUNER-TYPE1

TUNER-TYPE0

I Destination available/genuine model rool off H : genuine model 1, L : available model

I Destination available/genuine model noise cancel H : genuine model 0, L : available model

Non communication : H, When panel detached : L ∆3 Pull down on X25 unit, Pull up on X16 unit

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

H : Normal, L : FM/AM seek and AF search ∆3 (When tuner SRC auto zero, L)

H : Changer on, L : Changer off Except changer model : output L

H : mute on, L : mute off Power off after that 15 second L

When adjustment = H PS1-0, 1=L PS1-2, 2-0, 1=Hi-z IC10-DATA, CLK=Hi-z H : mute off, L : mute on Power off after that 15 second H

H : SW5V OFF, L : SW5V ON Power off after that 10 second H

KDC-1022/122P

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Name I/O Description Processing Operation

45 PS1-0 O

46 PS1-1 O

47 PS1-2 O

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

BA4911 SW1 Power supply IC output

PS1-2 PS1-1 PS1-0 A8V P-CON P-ANT

LLL STANDBY LL (H) H (L) ON OFF OFF LHHONONOFF HHHONONON

48 PS2-0 O

49 PS2-1 O Power supply IC SW2 control 1

50 BEEP BEEP

51 DSI O DSI control When panel detached, flashing at the panel (H/L)

52,53 NC O Not used (out put L) 54 LOE/LIM SW I CD mechanism down & limit detection H : Chucking detection, L : Normal 55 MO SW O CD mechanism loading motor control output H : Loading, Eject, Break, L : Play 56 LO/EJ I/O CD mechanism loading/Eject switching terminal H : Eject, L : Loading 57 M-STOP O Stop output to the CD mechanism H : Play, L : Stop 58 M-RST O Reset output to the CD mechanism H : Normal, L : CD mechanism reset 59 M-MUTE I Mute input from the CD mechanism H : mute off, L : mute on 60 RESET Reset input from the System microcomputer 61 REMO I Remote control input 62 R-CLK I RDS clock input Except RDS model : output L

63 CH-REQC I Request input from the changer (new 5L)

64 LOS SW I CD mechanism loading's switch detected H : No disc, L : DISK IN (Loading Start) 65 KEY-REQ I 66 12EJE SW I 12cm disc detected L : 12cm disc 67 Vss0 68 VDD1 69 X2 ∆3 MAIN X’tal oscillating circuit ∆3 4.19MHz X’tal connection 70 X1 ∆3 MAIN X’tal oscillating circuit ∆3 4.19MHz X’tal connection 71 IC TEST 72 XT2 Not used OPEN 73 XT1 74 VDD0 VDD Connected to VDD

75 AVREF0

76 S-METER I S-meter input 77 NOISE I FM noise detection input ∆3

78 PHONE I 2way mute

79 NC O Not used (output L) 80 AVCONT O A/D converter standard voltage control output H : During A/D converter active, Same timing with PON

Power supply IC SW2 control 0 ILL, FM, AM

ILL, FM, AM

Key input detected (11pin L connected to the DATA L)

A/D converter reference voltage control output, connection to the 80pin AVCONT

BA4911 SW2 Power supply IC output

PS2-1 PS2-0 ILLUMI FM AM

LL STANDBY

L (H) H (L) ON ON OFF

HHONOFF ON

H : Light on, L : Light off, When panel attached, output L

FIX model is output L

H : Changer detection, L : Request Except Changer model : output L

H : Key no input, L : Key input (edge key data reading start)

2.5V or greater : NAVI MUTE, 1.0V or less : TEL MUTE Except phone mute model : output L

KDC- 1022/122P

MICROCOMPUTER’S TERMINAL DESCRIPTION

● System µ-com Destination type list

TYPE2 TYPE1 TYPE0 MODEL NAME

LLLKDC-2024SA/SYA, 2024SG/SYG

UPD780058GC499

UPD780058GC501 L H H KDC-1023, 1023S

UPD780058GC502

UPD780058GC503 L L L KDC-2094YA/YG

H : R135 R137 R139 L : R136 R138 R140

LLHKDC-2022, 2022V, 202MR LHLRY-391CD, RX-491CD LHHKDC-4023, 2023, 3023 LLHKDC-122, 122S, 1022, 122P

HLHKDC-222, 222S

LLLKDC-3024G/YG, 307G/YG

LHHKDC-3023R HLLKDC-3024A/YA, 307A/YA HLHKDC-4024/Y/V/YV

● MECHANISM MICROCOMPUTER : MN6627771KP (X32 : IC2)

Pin No. Name I/O Description Processing Operation

1 TVD O Traverse driver output (PWM output) 2 SPL O Spindle motor drive output (PWM output) 3PCOSpindle motor ON output L : ON, H : OFF (default) 4 PWM O multi-purpose PWM output It’s possible to setup the TOSF2 5 TBAL O Tracking balance adjust output (PWM output) 6 FBAL O Focus balance adjust output (PWM output) 7 NRFDET I RF detection signal input L : detected 8 OFT I Off-track signal input H : detected

9 BDO I Drop out signal input H : detected 10 LDON O Laser on signal output H : ON, When command FO on, LDON is H 11 DSLB O DSL balance output 12 DVDD1 - Power supply for digital circuit 13 DVSS1 - Ground lines for digital circuit 14 AVSS2 - Ground lines for analog circuit For DSL, PLL and AD 15 DSLF I/O Loop filter terminal for DSL The bias of ARF output terminal in one 16 ARF I RF signal input 17 RFSW I When DSL circuit, constant switch terminal 18 PLLF I/O Loop filter terminal for PLL 19 PLLF2 I/O Loop filter characteristic switching terminal for PLL 20 IREF I Standard voltage input terminal 21 RFENV I RF envelope signal input Analog input 22 TRCRS I Track cross signal input Analog input 23 TE I Tracking error signal input Analog input 24 FE I Focusing error signal input Analog input 25 AVDD2 - Power supply for analog circuit For DSL, PLL and AD 26 AVSS1 - Ground lines for analog circuit For audio output (Lch and Rch in one) 27 OUTR O Rch audio output 28 AVDD1 - Power supply for analog circuit For audio output (Lch and Rch in one) 29 OUTL O Lch audio output 30 DVSS3 - Ground lines for digital circuit 31 CSEL I Oscillation frequency specification terminal H : 33.8488MHz, L : 16.9344MHz

KDC-1022/122P

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Name I/O Description Processing Operation

32 NC O Not used 33 ASEL I Audio output polarity switching terminal L : Reverse, H : Non reverse 34 MSEL0 I Destination type selection port (set 2bit) Order “MSEL 0” and “MSEL 1” Set up 35 MSEL1 I Destination type selection port (set 2bit) Order “MSEL 0” and “MSEL 1” Set up 36 ICRST O Reset control terminal for external DAC 37 BCLK O Bit clock output for serial data 38 LRCK O L/R identification signal output 39 SRDATA O Sirial data output 40 VREFP I A/D converter standard power supply input 41 HOT I Temperature protection detection terminal (AD input) Over C5(h) : on 42 8EJE_SW I 8cm disc eject stop detection terminal H : Stop 43 12EJE/SDET_SW I Judge the 8cm or 12cm disc 12cm disc stop detection terminal 44 LOE/LIM_SW I Pick-up inside detected Loading end detection terminal 45 PCK O PLL extracted clock output, etc 46 EFM O EFM signal output, etc 47 SENSE O Optics servo status signal output, etc 48 CLVS O Spindle servo phase synchronous signal output, etc L : Normal operation, H : Luff servo 49 DEMPH O Dephase detection signal output, etc H : on 50 DVDD2 - Power supply for digital circuit 51 X1 I Main clock input terminal 52 X2 O Main clock output terminal 53 DVSS2 - Ground lines for digital circuit 54 XSUB1 I When external DAC, external clock input terminal 55 XSUB2 O 56 TEST1 I Test port 1 Normal operation is H fixed 57 TEST2 I Test port 2 Normal operation is H fixed 58 NC O Not used 59 VER/HOR O Put length or breadth switching motor terminal H : Put length, L : Put breadth 60 DRV_MUTE O Driver mute control terminal L : MUTE ON, H : MUTE OFF 61 /MUTE_L O Audio Lch MUTE output L : MUTE 62 /MUTE_R O Audio Rch MUTE output L : MUTE 63 /RST I LSI reset input terminal H : Normal, L : Reset 64 OCD_CLK I When OCD connected, clock input 65 /MSTOP I Standby detection terminal H : Normal, L : Mecha stop 66 DATA I/O 67 SBIO I When connected to serial writer, data input terminal 68 /CLK I/O 69 TX O Digital audio interface signal output 70 EQCNT O RF EQ switching terminal L : x2 times, H : x1 times 71 XSEL I During the external DAC connection MCLK external input (H : input) 72 MCNT I CD mecha Loading/Eject control ON/OFF 73 P-ON O Audio and servo origin power control terminal L : power on, H : power off 74 MOTOR O Loading/Eject control switching terminal At that time LO/EJ is “H” 75 LO/EJ O Loading/Eject control terminal or output L When 72pin (P82) is “L”, output “L” 76 CD-RW O CD-RW control terminal H : CD-RW, L : normal 77 LDCNT O LD control terminal Operation is same LDON as timing 78 DVDD3 - Power supply for digital circuit 79 FOD O Focus driver output (PWM output) 80 TRD O Tracking driver output (PWM output)

I2C bus data line (communication line with system computer)

I2C bus clock line (communication line with system computer)

At that time serial writer connected

L : OFF (HOST control), H : mechanism control

KDC- 1022/122P

ADJUSTMENT

IC10 (TDA7513) -The T uner 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”.

1-1.

VCO Coil Adjustment -Adjustment of T unning Voltage

Voltage Check Point : 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 Mode Freq. Voltage Fig.

E/M AM 1611kHz 5.5±0.1(V) (C)

KAM1700kHz 5.8±0.1(V) (C)

JFM90.0MHz 5.6±0.1(V) (C)

W (Wide Band) FM 108.0MHz 7.2±0.1(V) (C)

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

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 Mode Freq. Mod. ANT Input Fig.

KAM1000kHz OFF 35dBµEMF (B),(C)

E,M,J,W AM 999kHz OFF 35dBµEMF (B),(C)

qThe appearance and the coil with which S-METER DC volt-

age serves as the maximum are turned and adjusted in the above-mentioned SG input.

wBy the above-mentioned adjustment method, same adjust-

ment is performed to both sides (1st & 2nd MIX Coil).

(

REAR VIEW

[Fig.1]

)

(

TUNER ANT

)

FM-SG AM-SG

(A) (B)

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 Mode Freq. Mod. ANT Input Fig.

E/M FM 87.5MHz OFF

KFM87.9MHz OFF

JFM76.0MHz OFF

W (Wide Band)

FM 65.0MHz OFF

qThe appearance and the coil with which S-METER DC volt-

age serves as the maximum are turned and adjusted in the above-mentioned SG input.

wBy the above-mentioned adjustment method, same adjust-

ment is performed to both sides (ANT & RF Coil).

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”

: 14 seg model “E2P OK”, 7 seg model “EPO”

Adjustment “NG”

: 14 seg model “E2P ERR”, 7 seg model “EPE”

• Releasing the test mode Reset mode only. ACC off, Power off, Power down and Remove the panel mode is not releasing.

5 or 11dBµEMF 5 or 11dBµEMF 5 or 11dBµEMF 5 or 11dBµEMF

(A),(C) (A),(C) (A),(C) (A),(C)

L505

L506

L508

L507

L509

(

OVER VIEW

[Fig.2]

Vt Check Land

S-METER Check Land

)

(

UNDER VIEW

[Fig.3]

IC10

)

(C)

DC Voltmeter

KDC-1022/122P

ADJUSTMENT

2. IC10 (TDA7513) 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 Adjustment Item

Parts Name

EEP-ROM IC12 ALL BR24C01AF-W ™ ™™™™™

Antenna Coil L505 E,K,M L31-0967-05 ™

RF Coil L506 E,K,M L31-0970-05 ™

VCO Coil L507 E,K,M L32-0933-05 ™ ™™™™

1st MIX Coil L508 ALL L30-0770-05 ™ 2nd MIX Coil L509 ALL L30-0771-05 ™ Variable Capacitance Diodes W (Wide Band) KV1735S Variable Capacitance Diodes W (Wide Band) KV1735S Variable Capacitance Diodes W (Wide Band) KV1735S X’tal X501 ALL L77-2077-05

Ref

Number Coil

IC10 ALL TDA7513 ™ ™™™™™

D504

D505

D506

TYPE Parts Number VCOVt 1st MIX 2nd MIX

M24C01-WMN6T

S-24CS02AFJ-TB

J L31-0966-05

W (Wide Band) L31-0968-05

J L31-0969-05

W (Wide Band) L31-0971-05

J L32-0932-05

W (Wide Band) L32-0934-05

J,E,K,M KV1720S

™ ™™™™

The “™” mark shows that the adjustment is need.

ANT

RF Coil Stereo

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