KDC-5090B, BY.pdf

CD RECEIVER

KDC-5090B/BY

SERVICE MANUAL

B51-7870-00 ( N ) 1940

Escutcheon assy

(B07-3007-03)

Front glass

(B10-4236-11)

Panel assy

(A64-2683-12)

KDC-5090B

PTY

47W X

T VOL ADJ

DAB

Plastic cabinet assy

(A02-1497-13)

Lever

(D10-4562-04)x2

(D10-4621-04)x2 : KDC-5090B

Screw set

(N99-1704-05)

Mounting hardware assy

(J21-9641-13)

DC cord

(E30-4944-05): KDC-5090BY

(E30-4958-05): KDC-5090B

Antenna adaptor

(T90-0523/0534-05)

The MECHANISM OPERATION DESCRIPTION is the same as model KDC-S3007 and KDC-5050RG.

Please refer to the service manual for model KDC-S3007(B51-7029-00) or KDC-5050RG(B51-7099-00).

KDC-5090B/BY

CONTENTS

BLOCK DIAGRAM ................................................................... 3

COMPONENT DESCRIPTION ................................................ 4

MICROCOMPUTER’S TERMINAL DESCRIPTION ................. 6

TEST MODE ............................................................................ 8

ATTENTION ........................................................................... 10

PC BOARD ............................................................................. 11

CD PLAYER UNIT (X32-5010-00) ....................................... 11

ELECTRIC UNIT (X25-87X2-7X) ....................................... 13

SWITCH UNIT (X13-99XX-X4) ........................................... 14

SCHEMATIC DIAGRAM......................................................... 17

ELECTRIC UNIT (X25-87X2-7X) ....................................... 17

SWITCH UNIT (X13-99XX-X4) ........................................... 21

CD PLAYER UNIT (X32-5010-00) ...................................... 23

EXPLODED VIEW ................................................................. 25

PARTS LIST ........................................................................... 27

SPECIFICATIONS............................................... BACK COVER

K M

KDC-5090B/BY

COMPONENT DESCRIPTION

SWITCH UNIT (X13-99XX-X4)

Ref. No.

Component Name

Application / Function

Operation / Condition / Compatibility

IC1

LC75808W

LCD driver with the key matrix

IC2

RS-171

Remote sensor IC

DTA114EUA or KRA302

Key-permission SW

For the key scanning start

2SD2114K

Red LED SW

When a base goes Hi, RED LEDs are turned on.

2SD2114K

Green LED SW

When a base goes Hi, GREEN LEDs are turned on.

2SC2412K or 2SD601A

VLCD AVR

DTA114EUA or KRA302

REMO SW

While a base goes Lo, PAN 5V is supplied to the Remote

sensor IC.

DTC143ZK

Dimmer SW

Usually Q7’s base goes Hi. When DIMMER mode is

selected, pulse wave shape is applied to Q7’s base.

ELECTRIC UNIT (X25-87X2-7X)

Ref. No.

Component Name

Application / Function

Operation / Condition / Compatibility

IC1

UPD703033GC117

System MI-COM.

or UPD703033GC145

IC2

TDA7407D

E.VOL & N.C.MPX IC

HD74HC02FP

IC3

Mute logic

2-input NOR x 4

or TC74HC02AF

IC4

TA8263BH

Power AMP. IC

IC7

TDA7479D

RDS decoder

IC8

S-80837ANNP

Reset IC

When BU 5V voltage is less than 3.7V, IC outputs Lo.

DTC143TUA or KRC410

Pre mute (Front L)

When Q1’s base goes Hi, Pre-output is muted.

DTC143TUA or KRC410

Pre mute (Front R)

When Q2’s base goes Hi, Pre-output is muted.

DTC143TUA or KRC410

Pre mute (Rear L)

When Q5’s base goes Hi, Pre-output is muted.

DTC143TUA or KRC410

Pre mute (Rear R)

When Q6’s base goes Hi, Pre-output is muted.

DTA124EUA or KRA303

Mute driver

When BU detection SW or System RESET or MI-COM.’s

Pre-mute is working, a base goes Lo, and Q7 is turned on.

Q11

2SC4081 or 2SD1819A

While BACKUP is applied, AVR outputs +5V.

BU 5V AVR

Q12

2SB1548(P)

Q11 and Q12 are inverted Darlington connection.

Q13

2SA1576A or 2SB1218A

SW 5V

While a base goes Lo, SW 5V is supplied to the

microprocessor peripheral circuits.

Q14

2SC4081 or 2SD1819A

A8V AVR

When Q14’s base goes Hi, A8V AVR outputs 8V.

Q15

2SB1548(P)

Q16

DTC124EUA or UN5212

A8V AVR and SERVO +B AVR ON/OFF control

SW14V SW

While Q16’s base goes Hi, Q17 is turned on, A8V AVR and

SERVO +B AVR are working.

Q17

DTA124EUA or KRA303

Q18

2SD2375

SERVO +B AVR

When Q18’s base goes Hi, SERVO +B AVR outputs 8V.

Q19

DTC124EUA or UN5212

ILL +B AVR ON/OFF control

ILL +B SW

While Q19’s base goes Hi, Q20 is turned on, and ILL +B

AVR is working.

Q20

DTA124EUA or KRA303

COMPONENT DESCRIPTION

KDC-5090B/BY

Ref. No.

Component Name

Application / Function

Operation / Condition / Compatibility

Q21

2SB1184

While Q22’s base goes Hi, AVR outputs +10.5V.

ILL +B AVR

Q22

2SC4081 or 2SD1819A

Works during POWER ON mode with a panel attached to the set.

Q26

DTC144EUA or UN5213

Small lamp detection SW

When vehicle small lamps turn on, Q26 is turned on .

Q27

DTC114YUA or UN5214

When Q27’s base goes Hi, Q32 is turned on .

P-CON SW

Q32

2SB1277(Q,R)

Works during POWER ON mode.

Q29

DTA124EUA or KRA303

P-CON. protection inhibit SW

Prevents Q30 tuning ON during start-up after power ON.

Q30

2SA1576A or 2SB1218A

P-CON. protection SW

Protect Q32 by turning ON when P-CON output is grounded.

While BACKUP is applied, a base goes Hi, and Q33 is

Q33

2SC4081 or 2SD1819A

BU detection SW

turned on. When momentary power down has detected,

a base goes Lo, and Q33 is turned off.

Q34

2SC4081 or 2SD1819A

ACC detection SW

While ACC is applied, a base goes Hi, and Q34 is turned on.

Q42

DTC124EUA or UN5212

E. VOL mute SW

When BU detection SW or MI-COM.’s mute is working,

a base goes Hi, and Q42 is turned on.

Q43

2SC4081 or 2SD1819A

Noise buffer

Q45

DTC124EUA or UN5212

When Q45’s base goes Hi, Q47 is turned on.

FM +B SW

Q47

2SB1277(Q,R)

Works during FM reception mode.

Q46

DTC124EUA or UN5212

When Q46’s base goes Hi, Q48 is turned on.

AM +B SW

Q48

2SB1277(Q,R)

Works during AM reception mode.

Q51

DTC144EUA or UN5213

IFC buffer

Waveform shaping

Q52

2SC4081 or 2SD1819A

Composite signal output buffer

Q55

2SA1576A or 2SB1218A

While a panel is attached to the set, Q56’s base goes Hi,

PAN 5V SW

Q56

DTC124EUA or UN5212

and Q55 is turned on.

CD PLAYER UNIT (X32-5010-00)

Ref. No.

Component Name

Application / Function

Operation / Condition / Compatibility

Generation of RF signal based on the signals from the APC

circuit and pickup, and generation of servo error (focusing

IC1

AN22000AA

RF amplifier

error and tracking error) signals.

Detection of dropout, anti-shock, track crossing and off-track

conditions, Gain control function building in.

IC2

MN662774KG1

CD signal processor bult-in MI-COM.

IC4

BA5917AFP

4CH BTL driver

Focusing coil, tracking coil, spindle motor and sled motor driver

IC6

NJM4565MD

OP Amp.

Low pass filter

MCH6101

APC

LD power control

DTC124EUA

P ON SW

When CD source is selected, Q2’s base goes Hi, Q3 and

Q4 are turned on.

DTA143XUA

A.8V SW

A8V ON/OFF control. When a base goes Lo, Q3 is turnde on.

2SA1362 (Y)

D.5V SW

D5V ON/OFF control. When a base goes Lo, Q4 is turnde on.

DTC124EUA

MOTOR SW

When CD loading or eject operation is activating, Q5’s base

goes Hi, Q4 is turned on.

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