Kenwood KDC-9020-R Service Manual

PREOUT

TEXT

COMPACT

DIGITAL AUDIO

D.REP

RDM P.M/M.RDM

READY

SIRIUS

AUTO

SCN

50Wx4

SRC

DAB

1/5

2/6

3/7

4/8

AUD

OFF

ANG

SCRL

KDC-X759

REP

TEXT

COMPACT

DIGITAL AUDIO

D.REP

RDM P.M/M. RDM

READY

SIRIUS

AUTO

SCN

50Wx4

SRC

DAB

1/5

2/6

3/7

4/8

AUD

OFF

ANG

SCRL

KDC-MP919

PREOUT

REP

F.SEL

TEXT

COMPACT

DIGITAL AUDIO

PTY/D.REP

RDM P.M/M. RDM

SCN

50Wx4

SRC

DAB

1/5

2/6

3/7 4/8

AUD

OFF

ANG

SCRL

KDC-XXXXXX

PREOUT

REP

F.SEL

GSM

KDC-9020R/MP919 /PSW9521/X759

CD RECEIVER

SERVICE MANUAL

2002-2 PRINTED IN KOREA

B51-7900-00(K) 3409

The CD mechanism information is not in this service manual. Please, refer to service manual. KDC-9020R/PSW9521 : X92-4470-0x(B51-7899-00)

KDC-MP919 : X92-4460-00(B51-7891-00) KDC-X759 : X92-4450-00(B51-7889-00)

Panel assy (A64-2568-02)

KDC-X759

Panel assy KDC-9020R: (A64-2570-02) KDC-PSW9521: (A64-2586-02)

Panel assy (A64-2569-02)

KDC-MP919

KDC-9020R KDC-PSW9521

Escutcheon assy (B07-3007-03)

DC cord (E30-)

Plastic cabinet assy (A02-1497-13)

Remote con.assy (A70-)

Antenna adaptor (T90-0523-05)

Escutcheon (B07-3010-02)

Mounting hardware assy (J21-9716-03)

Lever (D10-4562-04)

Bracket (L) (J19-5051-03)

Torsion coil spring (G01-2924-04)

Screw set (N99-1722-05)

Screw set (N99-1704-05)

∗

Remote con.assy (A70-0886-15)

∗

Bracket (R) (J19-5052-03)

∗

Depends on model. Refer to the parts list.

∗

ILL

TEL MUTE

ACC

ANT CON

P CON

BACK UP

EXT AMP CONT

PLL+B

BUFFER

DECODER

RDS

E-VOL

MPX

N.C.

IF+B

SYSTEM u-COM

RESET SW

A8V SW14V

EXT AMP CONT

DIMMER

ACC DET

TEL MUTE

P CON

B.U DET

ANT CON

SW5V B.U. 5V

PAN5V

MASK MECHA

POWER IC

THERMO PROTECT

IC4

MUTE

PRE AMP

4.5V

IC11-13

SP OUT

PRE OUT

RESET

AM+B

FM+B

NOISE BUFFER

SPEANA AGC OP AMP

SYSTEM E'S+

MUTE DRIVER

IC9

4.5V

SERVO AVR

DC/DC

4.5V PRE

IC15

DRIVER

MASK

REMO

O-CE

O-CLK

O-DATA

STEERING REMOTE

EXTERNAL DISPLAY

DC/DC REG

CD4.7V

DC/DC

IC7

MATRIX

KEY

REMO

FL3.3V SW

VFD (GRADATED)

SPEANA BPF

G/R SW

PANEL u-COM

FL+B SW

VFD (GRADATED)

MATRIX

KEY

RESET SW

FL3.3V SW

REMO

ROM

FL+B SW

PANEL u-COM

SPEANA BPF

G/R SW

IC10

IC14

IC2

CONTROL

1.8V PRE OUT

PRE OUT OUTPUT VOLTAGE

IC1

IC5

IC8

251mV (E) TYPE

470mV (K) TYPE

FM:

AM: 230mV

F/E

(X16-160)FL (2 COLOR) TYPE (X16-161)

FL (GRADATED) TYPE (X16-158)

(X16-159)

AUDIO

S-METER

IFC OUT

PLL DATA

PLL CLK

SW5V

FM AM

CD CHANGER

S METER

QUAL

SDA

SCK

S MUTE

A 8V

MASK SW1

RCLK QUAL RDATA

NOISE S METER AFS

IFC OUT PLL DATA PLL CLK

SW1

M RST

LO/EJ MO SW

MUTE R

MUTE L

M STOP

SW3

DATA C

CH RST CH MUTE

SW2

DATA H CH CON

CH CLK REQ H REQ C

MASK DET

RESET

AM+B

FM+B

SCK

SDA

PRE MUTE

MUTE

BEEP

P MUTE

ACC DET

PHONE

DIMMER

EXT AMP CONT

P CON

PAN5V

P ON

ANT CONT

B.U. DET

SW5V

CH MUTE

CH RST

DATA H

DATA C

CH CON

REQ C

CH CLK

REQ H

BACK UP

1200mV

CD4.7V

SERVO +B

A8V

PAN5 V

B.U. 5VSW5V

MUTE

AC GND

BACK UP

SW5V

B.U.5V

4500mVCD

AM 750mV

2250mV

1069mV

1715mV

(K) TYPE (E) TYPE

4500mV

B.U. 5V

SW5V

SCK

SDA

B.U. 5V

-B

SERVO+B

-B

MASK SW2

MASK SW3

O-CE

REMO

O-D ATA

O-CLK

MASK +

MASK -

CD-MECHA+B

ILL ON

CD4.7V

PANEL 5V

VDD1 VDD2

FAC

PANEL 5V

VDD1 VDD2

FAC

AFS

MS CLK

MS D ATA

M STOP

M RST MUTE L MUTE R

MO SW

LO/EJ

SW1 SW2 SW3

A8V

B.U. 5V

(MP3. WMA)

3600mV 1372mV

855mV

(E) TYPE

4.5V PRE 1.8V PRE

MODE

4500mV 4500mV 3600mV

1200mV

KDC-9020R/MP919/PSW9521/X759

BLOCK DIAGRAM

KDC-9020R/MP919/PSW9521/X759

COMPONENT DESCRIPTION

ELECTRIC UNIT (X25-91xx-xx)

Element Purpose & Function Operation, Condition, Compatibility

IC1 System uCOM IC2 E.Vol & N.C. MPX IC3 Power Supply IC Error detection in combination with Q8. Audio 8 V AVR drive. IC4 POWER IC 50Wx4ch IC5 HPF & LPF & NON-FAD SW IC6 CD mechanism 4.7 V power SW-Reg. IC7 4.5 V PRE-OUT DC/DC

IC8 RESET IC

IC9 Muting logic IC 4 inputs. NOR gate x 4. IC10 Spectrum analyzer opamp IC11 4.5 V PRE-OUT opamp Front output. IC12 4.5 V PRE-OUT opamp Rear output IC13 4.5 V PRE-OUT opamp Non-Fad. output IC14 RDS decoder IC15 Motor Dr. IC For storage mechanism IC16 E2PROM Q1,2 BU 5V AVR Darlington connected.

Q3 SW 5V ON when the base is "L". Q4,5 SW 14V Turns Q7 ON when the base of Q5 is "H". Q6,7 AUDIO 8V AVR ON/OFF SW 8 V ON/OFF SW. Q7 turns ON when the base of Q6 is "H".

Q8 AUDIO 8V AVR

Q9 Servo power AVR

Q10 CD 4.7V SW-Reg ON/OFF SW CD 4.7 V SW-Reg ON/OFF SW. ON when the base is "H".

Q11,12 FL & ILLUM AVR ON/OFF SW

Q13,14 FL & ILLUM AVR ON/OFF SW Q15,16 4.5 V PRE-OUT DC/DC converter AVR Darlington connected.

Q17~22 Regulated power supply Tr.

Q23,24 POWER-ANT SW Q24 turns ON when the base of Q23 is "H". Q25,28 POWER-CONT SW Q25 turns ON when the base of Q28 is "H".

Q26,27 POWER-CONT circuit output protection Q25 OFF to protect the output. This prevents malfunction of Q26 when

Q29 External amp control SW Turns ON when a pulse is input to the base. Q30 Dimmer control SW Small In is detected when the base is "H".

Q31 B-U detection

Q32 Acc detection "L" when Acc is present. Q33 Lch MUTE Dr L-ch audio muting SW drive. ON when the base is "L". Q34 Rch MUTE Dr R-ch audio muting SW drive. ON when the base is "L". Q35 Spectrum analyzer AGC Tr. Q36 E-Vol muting SW When the base is "L", turns ON to mute E-Vol. Q37 Noise buffer Q38 AUDIO MUTE SW Mutes the Front R CH hen the base is "H". Q39 AUDIO MUTE SW Mutes the Front L CH hen the base is "H". Q40 AUDIO MUTE SW Mutes the Rear R CH hen the base is "H". Q41 AUDIO MUTE SW Mutes the Rear L CH hen the base is "H". Q42 AUDIO MUTE SW Mutes the Non-FAD R CH hen the base is "H".

Q43 AUDIO MUTE SW Mutes the Non-FAD L CH hen the base is "H". Q45,46 FM+B SW Q46 turns ON when the base of Q45 is "H". Q47,48 AM+B SW Q48 turns ON when the base of Q47 is "H".

Q49 Composite signal buffer

Q50 PANEL 5V SW

"L" when Mask uCOM detection voltage is 3.7 V or less or when Flash uCOM detection voltage is 4.2 V or less.

FL & ILLUM AVR ON/OFF SW. Q12 turns ON when the base of Q11 is "H".

Upon detection of drop in the output voltage, these transistors turn

the POWER-CONT SW turns ON.

"L" when B-U is present. "H" when B-U is absent or momentary power down is detected."

When the panel is attached, the base goes "L", turning the transistor ON to supply 5 V to the panel.

KDC-9020R/MP919/PSW9521/X759

COMPONENT DESCRIPTION

SWITCH UNIT (X16-15xx-xx)

Element Purpose & Function Operation, Condition, Compatibility

IC1 PANEL u-com IC2 SPECTRUM ANALYZER IC IC3 REMOTE CONTROL IC IC4 BUFFER IC It is changed into 3.3V from 5V IC5 3.3V REGULATER The power supply of IC and UFD(Logic) which are driver by 3.3V IC6 ROM

Q1 REMO ON SW The power supply of IC2 and IC3 is turned on when the base level goes "L". Q2 SC-CON SW ON when the base level goes "H".

Q3,4 FL+B SW FL+B(VDD2) is turned on when Q3's base level goes "H".

Q5 FL BLK SW ON when the base level goes "H".

Q6,7 KEY ILLUMINATION SW

Lights green key-illumination when Q6's base level goes "H". Lights red key -illumination when Q7's base level goes "H".

KDC-9020R/MP919/PSW9521/X759

MICROCOMPUTER'S TERMINAL DESCRIPTION

PANEL MICROCOMPUTER UPD703033GC150 (X16)

Pin Name I/O Processing Operation

1 DATA1 O Data communication with FL driver.

2 CLK O Clock communication with FL driver (rise data shifting)

3NC O

4 DATA2 O Data communication with FL driver.

5 CLK IN I CS12 serial clock input (for synchronizing Data 1 and 2).

6 EVDD - PAN.5V

7 EVSS - GND

8 RED LED O ILLUM Red switching. "H": ON. "L": OFF.

9 GREEN LED O ILLUM Green switching. "H": ON. "L": OFF.

10 REMO I Input from Remote Control IC. 11 LATCH O Latch for FL driver. 12 GCP O Brightness graduation control. 13 REMO ON I/O Remote Control IC power ON/OFF. "HI-Z": OFF. "L": ON.

14-16 A13-15 O ADDRESS

17 BLK O Display for FL driver. Blanking display. "L": Display OFF. "H": Display ON. 18 TEST I INTEMALLY CONNECTED

19-30 A1-12 O ADDRESS

31 RESET I RESET 32 XT1 - GND 33 XT2 O 34 REGC - Regulator capacitance connection 35 X2 - MAIN CLOCK 36 X1 - MAIN CLOCK 37 VSS - GND 38 VDD - PAN.5V

39-42 NC O

43 OE I/O Output Enable. "L": Data sending. "Hi-Z": Standby. 44 CE I/O Chip Enable. "L": Data sending. "Hi-Z": Standby 45 FL+3.3V O FL+3.3V ON/OFF "H":ON "L":OFF 46 FL+B I/O FL+B ON/OFF "H":ON "HiZ":OFF

47-54 AD0-7 I DATA for external ROM.

55 BVDD - PAN.5V

56 BVSS - GND 57-64 AD8-15 I DATA for external ROM. 65-68 A16-19 O ADDRESS

69 NC O

70 A20 O ADDRESS

71 AVDD - PAN.5V

72 AVSS - GND

73 AVREF -

74 F01 I BPF(63Hz)

75 F02 I BPF(150Hz)

76 F03 I BPF(330Hz)

77 F04 I BPF(1kHz)

78 F05 I BPF(3.3kHz)

79 F06 I BPF(10kHz)

80 WAVE IN I Voice input.

81 KR3 I KEY RETURN

82 KR2 I KEY RETURN

83 KR1 I KEY RETURN

84 VOL B I VOL input.

85 VOL A I VOL input.

86 SC REQ O Request communication with System Controller. "H": Requested.

87 NC(FAC IN) O (Flicker prevention circuit input)

KDC-9020R/MP919/PSW9521/X759

MICROCOMPUTER'S TERMINAL DESCRIPTION

PANEL MICROCOMPUTER UPD703033GC150 (X16)

Pin Name I/O Processing Operation

88 SC CON I Panel uCOM control. During operation: "L". 89 OPEN KEY I OPEN KEY "H":ON "L":OFF 90 SOURCE KEY I SOURCE KEY "H":ON "L":OFF 91 VREF CON O VREF CONTROL During operation:H 92 MC REQ I Request input from System Controller. "H": Requested. 93 KS4 I/O KEY SCAN(Hi-Z/L) 94 KS3 I/O KEY SCAN(Hi-Z/L) Flash uCOM write port. (DI) 95 KS2 I/O KEY SCAN(Hi-Z/L) Flash uCOM write port. (DO) 96 KS1 I/O KEY SCAN(Hi-Z/L) Flash uCOM write port.(CLK) 97 MC DATA I Data communication with System Controller. 98 SC DATA I/O Data communication with System Controller. 99 MC CLK I Clock input from System Controller

100 NC O

KDC-9020R/MP919/PSW9521/X759

MICROCOMPUTER'S TERMINAL DESCRIPTION

SYSTEM MICROCOMPUTER uPD703033AGF-***-3BA (X25)

Pin Name I/O Purpose Processing Operation

1 MC-DATA I/O

2 MC-CLK O CLK line to Panel uCOM.

3 PLL-DATA I/O DATA I/O to/from F/E. Hi-Z Hi-Z 4 PLL-CLK I/O CLK I/O to/from F/E. Hi-Z Hi-Z

5 AM+B I/O

6 FM+B I/O FM power supply terminal. With RDS and RBDS Hi-Z Hi-Z

7 CH-CON O CH control output. ON: H OFF: L L L

8 CH-RST O CH reset output.

9 Evdd -

10 Evss - GND terminal.

11 AFS O

12 BEEP O Beep output terminal. L L

13 REMO I

14 N.C O Output Open. Not used. L 15 N.C O Output Open. Not used. L

16 IC2-SDA I/O

17 IC2-SCL I/O

18 PRE-MUTE R O PREOUT(Rch)MUTE "L" during momentary

19 PRE-MUTE L O PREOUT(Lch)MUTE "L" during momentary

20 N.C O Output Open. Not used. L 21 TEST - Test pin. Normal: "L". During

22 N.C(SVR) O

23 P-MUTE O Power IC MUTE terminal.

24 P-STBY O Power IC STBY terminal. POWER IC OFF : L L L

25 MUTE O Muting terminal. Time constant: 0.48 ms L

DATA line to Panel uCOM.

AM power supply terminal.

Positive power supply terminal.

Time constant switching upon noise detection.

Wired remote input terminal.

IC2, IC5 and CD mechanism DATA line. IC2, IC5 and CD mechanism CLOCK line.

During AM operation: "H". Hi-Z Hi-Z

During FM operation: "H".

only, last FM: "H".

Normally "H". In recovery after system RST, remains H for 400 ms then goes L"

During FM seek and AM search: L. During reception; H.

Since there is no wired remote control, connected to GND.

"L" when M MUTE R is L (during CD playback).

power down. "H" only in 2-zone operation. "L" when M MUTE R is L (during CD playback).

power down. "H" only in 2-zone operation.

power OFF: "H" in 5 sec. "H" ("L" in 5 sec. Power OFF: H after Power OFF). Power OFF: L All OFF: "L ("H" in 5 sec. "L". Tel muting: "L" POWER IC ON: H

ALL OFF: H ON: Open. OFF: "L".

(with both ON/OFF)

Processing During Processing During

Non-Operation STBY

Hi-Z Hi-Z

Panel attached: "H". Detached: "Hi-Z".

Last FM with RDS and RBDS: "H". Without RDS and RBDS: "L".

Hi-Z Hi-Z

"H" (other sources than CD)

H (other sources than CD)

after P-ON OFF).

Open ("H" in 5 sec. after P-ON OFF).

KDC-9020R/MP919/PSW9521/X759

MICROCOMPUTER'S TERMINAL DESCRIPTION

SYSTEM MICROCOMPUTER uPD703033AGF-***-3BA (X25)

Pin Name I/O Purpose Processing Operation

26 SW5V I/O 5V power supply terminal. ON: L OFF: Hi-Z Hi-Z

27 BU-DET I

28 ACC-DET I Acc detection terminal.

29 N.C O Output Open. Not used. L 30 DIMMER I Small detection terminal. ON: L OFF: H

EXT-AMP-

CONT terminal (200 ms). Low.

32 P-CON I/O Power control terminal. POWER OFF: Hi-Z Hi-Z Hi-Z

33 ANT-CON O Antenna control terminal. RDS: "H". Other sources L L

34 RESET I Reset input terminal. Normal: "H". Reset: "L".

35 XT1 I

36 XT2 -

37 REGC - capacitor of Reg.

38 X2 -

39 X1 I

40 Vss - GND terminal.

41 Vdd -

42 CLKOUT O

43 CD MECHA+B I/O CD 4.7 V output terminal. MP3 or WMA: Output "L". Hi-Z Hi-Z

44 P-ON I/O SW 14 V control terminal.

45 O-DATA I/O

Momentary power down detection terminal.

External amp control "L" for 70 ms: Bass Boost

Sub-clock connection Clock count. Working terminal. while power is OFF. Sub-clock connection terminal. Output terminal for

in uCOM.

Main clock connection terminal.

Positive power supply terminal. Internal system clock terminal.

External display DATA Models without external terminal. display: Output "L".

B-U present: "L". B-U absent (momentary power down): "H". Acc present: "L". Acc absent: "H".

"L for 40 ms: Bass Boost Off.

"L" for 100 ms: Bass Boost High. POWER ON: H

ALL OFF: Hi-Z TUNER, TI ON: H Other sources in last FM with

in last FM with RBDS, TI ON: "H".

During power ON: Oscillating. During power OFF and momentary power down: Oscillation stopped.

With CD source: "L". Other sources than CD: "Hi-Z". Models without

ON: 50 ms faster than M-STOP. OFF: 50 ms slower. POWER ON: H "H ("Hi-Z" in 10 sec. POWER OFF: Hi-Z

Processing During Processing During

Non-Operation STBY

"L ("Hi-Z" in 10 sec. after Power OFF).

Hi-Z

after power OFF).

KDC-9020R/MP919/PSW9521/X759

MICROCOMPUTER'S TERMINAL DESCRIPTION

SYSTEM MICROCOMPUTER uPD703033AGF-***-3BA (X25)

Pin Name I/O Purpose Processing Operation

46 O-CLK I/O

47 O-CE I/O

48 ILL-ON I/O

49 TYPE0 I

50 TYPE1 I

51 TYPE2 I

52 IC2TYPE0 I

53 IC2TYPE1 I

54 N.C O Output Open. Not used. 55 N.C O Output Open. Not used.

56 M-MUTE R I

57 M-MUTE L I

58 BVdd -

59 BVss - GND terminal.

60 M-RST O

61 M-STOP O

62 N.C O Output Open. Not used. L

63 CD-SW3 I

64 LO/EJ I/O

65 MOSW O

66 N.C O Output Open. Not used. L

67 PAN-RESET O

MC-REQ/

PANEL uCOM/Panel detection.

69 N.C O Output Open. Not used. L

70 PAN5V I/O Panel 5 V control terminal.

71 MASK+B O

72 MASK-B O

73 AVCONT O

External display CLK Models without external terminal. display: Output "L". External display CE Models without external terminal. display: Output "L". FL and ILLUM output terminal. Destination type switching port. Destination type switching port. Destination type switching port. IC2 destination type terminal. IC2 destination type terminal.

Muting request from CD mechanism. (R CH) Muting request from CD mechanism. (L CH) Positive power supply terminal.

Reset output According to the to CD mechanism. mechanism control

Stop request to CD mechanism.

CD Down SW detection terminal. CD mechanism Loading/ Stop, braking: "Hi-Z". Ejection switching. Loading: "L". Ejection: "H". CD mechanism motor Loading, ejection, power supply SW. braking: "H".

Reset output to Panel uCOM.

REQ terminal to Panel

I/O

Mask mechanism sub-motor output terminal. Mask mechanism sub-motor output terminal. AD reference voltage Same timing as P-ON. control output. During operation: "H"

ON: H OFF: Hi-Z Hi-Z Hi-Z

Default: "L".

ON: L

Normal: "H". Reset: "L".

specification.

STOP: L CD: H L L

Chucking: "H". L

Normal: "H". Reset & momentary power down: "L".

Panel attached: "L". Hi-z Hi-Z

Panel attached: "L". Panel attached: "L". Panel detached: "Hi-Z". Detached: "Hi-Z".

Processing During Processing During

Non-Operation STBY

Hi-z Hi-Z

Panel attached: "H". Panel attached: "H". Panel detached: "L". Panel detached: "L".

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