JVC KD-S576 Service manual

SERVICE MANUAL

CD RECEIVER

KD-S576

KD-S576

Contents

KD-S576

Safety precaution
Location of main parts
Disassembly method
Adjustment method
Flow of functional operation until TOC read
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs

1

3

COMPACT

DIGITAL AUDIO

Area Suffix

J Northern America

(Paraguay)

1-2
1-3
1-4
1-9
1-10
1-12
1-12
1-13

COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.

No.49650

Jul. 2001

KD-S576

Safety precaution

!

!

Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.

Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.

1-2

Location of main parts

Control unit

Display

KD-S576

LED & key control board

Main uni

CD mechanism

t

Main board

Mechanism relay board

Power IC

ISO connector

Main board

Loading motor

Antenna jack

Tuner

pack

Connector to controller

Damper

Optical pick up unit

Spindle motor

Feed motor

Damper

1-3

KD-S576

Disassembly method

Removing the front panel unit

(See Fig.1)

1. Press the release switch and remove the front
panel unit in the direction of the arrow.

Fig.1

Removing the front chassis (See Fig.2)

1. Insert a screwdriver to the joints a on the side of the
front chassis and two joints b on the right side, then
detach the front chassis toward the front side.

Removing the heat sink (See Fig.3)

1. Remove the three screws A attaching the heat sink
on the left side of the body, and remove the heat
sink.

A

a

a

Front chassis

A

b

b

Fig.2

A

Heat sink

Fig. 3

Removing the bottom cover (See Fig.4)

1.2.Turn the body upside down.

Insert a screwdriver to the two joints c and two
joints d on both sides of the body and the joint e on
the back of the body, then detach the bottom cover
from the body.

1-4

c

Regulator board

d

e

Fig. 4

KD-S576

Removing the main amplifier board

(See Fig.5 and 6)

1.

Remove the front chassis.

2.

Remove the bottom cover.

3.

Remove the two screws B attaching the main
amplifier board assembly on the bottom of the body.

4.

Remove the three screws C attaching the main
amplifier board assembly on the back of the body.

5.

Disconnect connector CN501 on the main amplifier
board assembly from the CD mechanism assembly.

Main amplifier board

B

C

CN501

B

Fig.5

C

C

Fig. 6

Removing the CD mechanism assembly

(See Fig.7)

1.

Remove the front chassis.

2.

Remove the bottom cover.

3.

Remove the main amplifier board assembly.

4.

Remove the three screws D attaching the CD
mechanism assembly from the top cover.

Removing the control switch board

(See Fig.8 and 9)

1.

Remove the front chassis.

2.

Remove the four screws E attaching the rear cover
on the back of the front panel unit.

3.

Remove the control switch board from the front
panel unit.

CD mechanism assembly

Top cover

D

E

E

D

Fig. 7

E

Fig. 8

Control switch board

D

E

Fig. 9

1-5

KD-S576

Removing the CD mechanism control
board(See Fig.1 and 2)

Unsolder the part f and g on the CD mechanism
control board.

Remove the stator fixing the CD mechanism control
board and the damper bracket (To remove the stator
smoothly, pick up the center part).

Remove the screw F attaching the CD mechanism
control board.

Remove the CD mechanism control board in the
direction of the arrow while releasing it from the two
damper bracket slots i and the front bracket slot j.

Disconnect the flexible wire from connector on the
pickup unit.

ATTENTION:

Turn the FD gear in the direction of the
arrow to move the entire pickup unit to
the appropriate position where the
flexible wire of the CD mechanism unit
can be disconnected easily (Refer to
Fig.2).

CD mechanism ass’y

m

Front bracket

Damper bracket

I

g

F

Fig.1

Pickup unit

I

j

Flexible wire

f

m

h

I

i

CD mechanism
control board

Shift the lock

FD gear

k

G

Loading motor

Pull outward

Fig.2

CD mechanism control board

Front bracket

Fig.3

Front bracket

k

G

Pull outward

1-6

Flame

Fig.4

KD-S576

Removing the loading motor

(See Fig.3 to 5)

Prior to performing the following procedure, remove
the CD mechanism control board.

Remove the two springs k attaching the CD mechanism
ass’y and the front bracket.

Remove the two screws G and the front bracket
while pulling the flame outward.

Remove the belt and the screw H from the loading
motor.

Removing the CD mechanism ass’y

(See Fig.1, 6 to 9)

CD mechanism ass’y

I

Flame

Loading motor

m

H

Belt

Fig.5

Damper bracket

m

I

Fig.6

I

I

Prior to performing the following procedure, remove
the CD mechanism control PWB and the front
bracket (loading motor).

1.

Remove the three screws I and the damper bracket.

2.

Raise the both sides fix arms and move the fix plates
in the direction of the arrow to place the four shafts l
as shown in Fig.8 and 9.

3.

Remove the CD mechanism ass’y and the two
springs m attaching the flame.

4.

Remove the two screws J and both sides rear
damper brackets from the dampers. Detach the CD
mechanism ass’y from the left side to the right side.

ATTENTION:

The CD mechanism ass’y can be
removed if only the rear damper
bracket on the left side is removed.

Fix plate (L)

l

Fix arm (R)

Fig.7

Rear damper bracket

l

Fig.8

Rear damper bracket

J

Fix plate(R)

J

Fix arm (L)

Damper

Damper

l

l

Fig.9

1-7

KD-S576

Removing the feed motor ass’y

(See Fig.10)

Prior to performing the following procedure, remove
the CD mechanism control board, the front bracket
(loading motor) and the CD mechanism ass’y.

1.

Remove the two screws K and the feed motor ass’y.

Removing the pickup unit

(See Fig.10 and 11)

*Prior to performing the following procedure, remove
the CD mechanism control board, the front bracket
(loading motor), the CD mechanism ass’y and the
feed motor ass’y.

1.

Detach the FD gear part of the pickup unit upward.
Then remove the pickup unit while pulling out the
part n of the FD screw.

Feed motor ass’y

K

FD gear

Nut push spring plate

FD screw

Pickup unit

Fig.10

Part n

Part O

Pickup unit

L

Pickup mount nut

Pickup unit

ATTENTION:

2.

Remove the screw L attaching the nut push spring
plate and the pickup mount nut from the pickup unit.
Pull out the FD screw.

When reattaching the pickuap unit,
reattach the part o of the pickup unit,
then the part n of the FD screw.

Removing the spindle motor

(See Fig.12 and 13)

Prior to performing the following procedure, remove
the CD mechanism control board, the front bracket
(loading motor), the CD mechanism ass’y and the
feed motor ass’y.

1.

Turn up the CD mechanism ass’y and remove the
two springs p on both sides of the clamper arms.
Open the clamper arm upward.

2.

Turn the turn table, and remove the two screws M
and the spindle motor.

FD screw

p

Spindle motor

Fig.11

p

Fig.12

M

1-8

M

Fig.13

Adjustment method

KD-S576

Test instruments required for adjustment

1. Digital oscilloscope (100MHz)

2. AM Standard signal generator

3. FM Standard signal generator

4. Stereo modulator

5. Electric voltmeter

6. Digital tester

7. Tracking offset meter

8. Test Disc JVC :CTS-1000

9. Extension cable for check
EXTGS004-26P 1

Standard measuring conditions
Power supply voltage DC14.4V(10.5~16V)
Load impedance 20Kohm(2 Speakers connection)
Output Level Line out 2.0V (Vol. MAX)

How to connect the extension cable for adjusting

Standard volume position
Balance and Bass &Treble volume : lndication"0"
Loudness : OFF
BBE : OFF
Frequency Band
FM 87.5MHz ~ 108.0MHz
MW 522kHz ~ 1620 kHz
LW 144kHz ~ 279kHz

Dummy load
Exclusive dummy load should be used for AM,and FM. For
FM dummy load,there is a loss of 6dB between SSG output
and antenna input.The loss of 6dB need not be considered
since direct reading of figures are applied in this working
standard.

The cardboard is cut in a suitable size.
uses for the insulation stand of mechanism.

EXTGS004-26P

1-9

KD-S576

Flow of functional operation until TOC read

Power ON

• When the pickup correctly moves
to the inner area of the disc

Set Function to CD

• When the laser diode correctly
emits

Microprocessor

commands

FMO
TC9462 "53"

FEED MOTOR
+TERMINAL

TERMINAL

IC581 "5"
REST SW

• When correctly focused

Focus Servo Loop ON

Disc inserted

Pickup feed to the inner area

Laser emitted

Focus search

Disc rotates

RF signal eye-pattern
remains closed

Tracking loop closed

RF signal eye-pattern
opens

TOC readout

YES

YES

Microprocessor

commands

"No disc"

display

• When the disc correctly rotates

Microprocessor
commands

Spindle
motor (-)
IC581 "7"

AccelerationAcceleration

0.5 Sec

Rough

Servo

0.5 Sec

Servo CLV

1-10

Jump to the first track

Play

Tracking Servo Loop ON

• RF signal

Rough Servo Mode

CLV Servo Mode
(ProgramArea)

CLV Servo Mode
(Lead-In Area;
Digital: 0)

Feed Section

Is the voltage output at

IC521 pin "53" 5V or 0V?

YES

Is 4V present at both

sides of the feed motor?

YES

NO

Is the wiring for IC521

(90) ~ (100) correct?

NO

Is 6V or 2V present at

IC581 "5" and "6"?

NO

YES

YES

Is 5V present at IC581

pin "11"?

YES

Check the vicinity of

IC521.

Check the feed motor

connection wiring.

NONO

KD-S576

Check CD 9V

and 5V.

Check the feed motor.

Focus Section

When the lens is

moving:

4V

Does the S-search

waveform appear at

IC581 pins "17" and "18"?

Spindle Section

Is the disk rotated?

YES

Does the RF signal

appear at TP1?

YES

Check IC581.

NO

YES

NO

NO

Check the circuits in
the vicinity of IC581

pins "15" ~ "18".

Check the pickup and

its connections.

Is 4V present at IC581

pins "7" and "8" ?

Check the spindle motor

and its wiring.

YES

YES

NO NO

Is 4V present at IC521

pin "55" ?

YES

Check the vicinity of

IC581.

Check IC501 and

IC521.

Is the RF waveform at TP1

distorted?

YES

Proceed to the Tracking

section

Tracking Section

When the disc is rotated

at first:

Is the tracking error signal

output at IC501 "12"?

Check IC521.

NO

Approx. 1.2 V

YES

Check the circuits in the

vicinity of IC501 "19" ~

"24" or the pickup

Check the circuit in the

vicinity of IC501 pins

"2" ~ "12".

YESYES

Check the pickup and

its connections.

1-11

KD-S576

Maintenance of laser pickup

(1) Cleaning the pick up lens
Before you replace the pick up, please try to
clean the lens with a alcohol soaked cotton
swab.

(2) Life of the laser diode
When the life of the laser diode has expired,
the following symptoms will appear.
(1) The level of RF output (EFM output:ampli
tude of eye pattern) will be low.

Is RF output

1.0 0.35Vp-p?

YES

O.K

(3) Semi-fixed resistor on the APC PC board
The semi-fixed resistor on the APC printed
circuit board which is attached to the pickup
is used to adjust the laser power.Since this
adjustment should be performed to match the
characteristics of the whole optical block,
do not touch the semi-fixed resistor.
If the laser power is lower than the specified
value,the laser diode is almost worn out, and
the laser pickup should be replaced.
If the semi-fixed resistor is adjusted while
the pickup is functioning normally,the laser
pickup may be damaged due to excessive current.

NO

Replace it.

Replacement of laser pickup

Turn off the power switch and,disconnect the
power cord from the ac outlet.

Replace the pickup with a normal one.(Refer
to "Pickup Removal" on the previous page)

Plug the power cord in,and turn the power on.
At this time,check that the laser emits for
about 3seconds and the objective lens moves
up and down.
Note: Do not observe the laser beam directly.

1-12

Play a disc.

Check the eye-pattern at TP1.

Finish.

Description of major ICs

TEA6320T-X(IC301) : E.volume

KD-S576

1.Terminal Layout

SDA

1

GND

TL
B2L
B1L

IVL

ILL

QSL

IDL

MUTE

ICL

IMD

IBL
IAL

2
3
4
5
6
7
8

9
10
11
12
13
14
15
16

CD-CH

TAPE

TUNER

OUTLR

OUTLF

3.Pin Functions

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

SCL
VCC
OUTRR
OUTRF
TR
B2R
B1R
IVR
ILR
QSR
IDR
Vref
ICR
CAP
IBR
IAR

2.Block Diagram

10 8 9 7 6

21

POWER

31

SUPPLY

2

19

16
15
13
11

SOURCE

SELECTOR

14

22
20
18
17

23 25 24 26 27 28

VOLUME 1

+20 to -31 dB

LOUDNESS

LEFT

VOLUME 1

+20 to -31 dB

LOUDNESS

RIGHT

BASS

LEFT

+15 dB

LOGIC

BASS
RIGHT
+15 dB

5

TREBLE

LEFT

+12 dB

TREBLE

RIGHT
+12 dB

12

MUTE

FUNCTION

ZERO CROSS

DETECTOR

VOLUME 2

0 to 55 dB
BALANCE

FENDER REAR

VOLUME 2

0 to 55 dB

BALANCE

FENDER FRONT

HC BUS

REC

VOLUME 2
0 to -55dB
BALANCE

FENDER FRONT

VOLUME 2

0 to -55dB
BALANCE

FENDER REAR

3

4

32
1

29

30

Pin
No.

1
2
3
4
5
6
7
8

9
10
11
12
13
14

Symbol

SDA

GND

OUTLR

OUTLF

TL
B2L
B1L

IVL
ILL

QSL

IDL

MUTE

ICL

IMO

I/O

Serial data input/output.

I/O

Ground.

­output left rear.

O

output left front.

O

Treble control capacitor left channel or

I

input from an external equalizer.
Bass control capacitor leftchannel or

-

output to an external equalizer.
Bass control capacitor left channel.

­Input volume 1. left control part.

I

Input loudness. left control part.

I

Output source selector. left channel.

O

Not used

­Not used

­Input C left source.

I

Not used

-

Functions Functions

Pin
No.

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

Symbol

IAR
IBR

CAP

ICR
Vref
IDR

QSR

ILR

IVR
B1R
B2R

TR
OUTRF
OUTRR

I/O

I

Input A right source.

I

Input B right source.

-

Electronic filtering for supply.

I

Input C right source.

-

Reference voltage (0.5Vcc)

-

Not used

O

Output source selector right channel.

I

Input loudness right channel.

I

Input volume 1. right control part.

-

Bass control capacitor right channel
Bass control capacitor right channel or

O

output to an external equalizer.
Treble control capacitor right channel or

I

input from an external equalizer.

O

Output right front.

O

Output right rear.

15
16

IBL
IAL

Input B left source.

I

Input A left source.

I

31
32

Vcc

SCL

-

Supply voltage.

I

Serial clock input.

1-13

KD-S576

AN8806SB-W (IC501) : RF&Servo amp.

1.Pin layout

PD

LD
LDON
LDP

VCC
RF-
RF OUT
RF IN

C.AGC
ARF
C.ENV

C.EA

CS BDO

BDO
CS BRT
OFTR
/NRFDET

GND

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18

36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19

PDAC
PDBD
PDF
PDE
PDER
PDFR
TBAL
FBAL
EF­ EF OUT
TE­ TE OUT
CROSS
TE BPF
VDET
LD OFF
VREF
ENV

2.Block diagram

36

-­+

35

-­+

31

34

-­+

32

33

-­+

6

--

VCBA

+

29

728

-­+

--

+

+

VCBA

--

+

VCBA

--

--

VCBA

+

+

--

-­+

-­+

+

--

27

-­+

--

EQ

+

+

--

+

--

910 17

8

AGC

OFTR

BDO

RF
DET

11

12 19

ENV CURCUIT

13
14

15

16

-­+

20

21

2

1-14

24 25

30

14

23

26

22

3

KD-S576

3. Pin function

Pin No.

1
2

3
4
5
6

7
8

9
10
11
12
13
14
15
16
17
18
19

20
21
22
23
24
25

26
27
28
29
30

31

32

33

34

35

36

Symbol

/NRFDET

PD
LD

LD ON

LDP

VCC

RF-

RF OUT

RF IN

C.AGC

ARF

C.ENV

C.EA

CS BDO

BDO

CS BRT

OFTR

GND
ENV

VREF

LD OFF

VDET

TE BPF

CROSS

TE OUT

TE-

FE OUT

FE­FBAL
TBAL

PDFR
PDER

PDF

PDE

PD BD

PD AC

I/O

I

APC amp input terminal
APC amp output terminal

O

APC ON/OFF control terminal

I

--

Connect to ground

Power supply

-­Inverse input pin for RF amp

I

RFamp output

O

RF input

I

Connecting pin of AGC loop filter

I/O

RF output

O

I/O

A capacitor is connected to this terminal to detect the envelope of RF signal

I/O

A capacitor is connected to this terminal to detect the envelope of RF signal

A capacitor is connected to detect the lower envelope of RF signal

I/O

BDO output pin

O

A capacitor is connected to detect the lower envelope of RF signal

I/O

O

Of-track status signal output

RF detection signal output

O

--

Ground

O

Envelope output
Reference voltage output

O

--

Connect to ground

O

Vibration detection signal output

I

Input pin of tracking error through BPF

O

Tracking error cross output

O

Tracking error signal output
Inverse input pin for tracking error amp

I

O

Output pin of focus error
Inverse input pin for focus error amp

I
I

Focus balance control

I

Tracking balance control
F I-V amp gain control

I/O

E I-V amp gain control

I/O

I

I-V amp input
I-V amp input

I
I

I-V amp input

Description

I I-V amp input

AN8806SB-W

1-15

KD-S576

MN35510(IC561):Digital servo & digital signal processor

1. Terminal Layout

2. Block Diagram

LRCKIN(MSEL)
BCLK(SSEL)
SRDATAIN
(PSEL)

IOSEL

CLVS
CRC
BLKCK
CLDCK
SBCK
SUBC
DEMPH
RESY
FLAG6(RESY)

SSEL
SQCK
SUBQ
AVDD2

AVDD2

PCK
EFM
PLLF
DSLF
IREF
DRF
ARF
RSEL
PSEL

MLD
MCLK
MDATA

CK384(EFM)
VCOF
BYTCK
SMCK
FCLK
CSEL
MSEL
X2
X1

ÊSTAT

DIGITAL
DEEMPHSIS

SUB
CODE
BUFFER

DSL.
PLL
VCO

VCO

ITUNING
GENERATION
PITCH
CONTROL

20 ~ 1

21

~

40

41 ~ 60

8TIMES
OVER SAMPUNC
DIGITAL FILTER

EFM
DEMODULATION

SYNC
INTERPOLATION

SUBCODE
DEMODULATION

MICRO
COMPUTER
INTERFACE

CONVERTER

A/D

80

~

61

CIRC
ERROR
CORRECTION
DEINTERLEVE

CLV
SERVO

1BIT
DAC
LOGIC
S

16k
SRAM

INPUT

PEM
(R)

PEM
(L)

D/A
CONVERTER

OUTPUT

DIGITAL
AUDIO
INTERFACE

DIGITAL
AUDIO
INTERFACE

INTER POLATION
SOFT MUTING DIGITAL
ATTENUATION
PEAK DETECTIVE
AUTO CUE

PORT

SERVO

TIMING GENERATOR

AVSS1
AVDD1
OUTR

OUTL

FLAG
IPFLAG

TX

ECM

PC

LRCK
SRDATA
BCLK
DMUTE

TRKV
KICK
VREF
TRVSTR
ECS
TVD
TRD
FOD
TBAL
FBAL
TOFS
TES
/TLOCK
/FLOCK
PLAY
LDON
WVEL
SENSE

1-16

D

/

D

V

V

V

R

V

S

D

D

S

S

S

D

D

T

S

1

1

F

/

E

T
E
S
T

R

T

F

E

E
N
V

T
R
C
R
S

B

V

D

D

O

E
T

/
R
F
D
E

O
F
T

KD-S576

3. Description

Pin
No.

1
2
3
4
5
6

7

8

9
10
11

12
13
14
15
16

17

18
19
20

21
22
23

24

25

26

27

28

29

30
31
32
33

34

35

36

37

38

39

40

symbol

BCLK
LRCK
SRDATA
DVDD1
DVSS1
TX

MCLK

MDATA
MLD
SENSE
FLOCK
TLOCK
BLKCK
SQCK
SUBQ
DMUTE

STATUS

RST
SMCK

PMCK

TRV
TVD

PC

ECM

ECS

KICK
TRD
FOD

VREF

FBAL
TBAL

FE
TE

RF ENV

VDET
OFT
TRCRS

RFDET

BDO
LDON

I/O

O
O
O

O

O

Description

Not used
Not used

Not used

I

Power supply (Digital)

I

Connected to GND
Digital audio interface output

Micom command clock signal input

I

(Data is latched at signal's rising point)

Micom command data input

I
I

Micom command load signal input

Sence signal output

O

Focus lock signal output Active :Low

O

Tracking lock signal output Active :Low

sub-code - block - clock signal output

O

I

Outside clock for sub-code Q resister input
Sub-code Q -code output

O

I

Connected to GND
Status signal

O

(CRC,CUE,CLVS,TTSTOP,ECLV,SQOK)

Reset signal input (L:Reset)

I

I

Not used

I

Not used

O

Traverse enforced output

O

Traverse drive output

I

Not used
Spindle motor drive signal (Enforced

O

mode output) 3-State

Spindle motor drive signal (Servo error

O

signal output)

Kick pulse output

O

Tracking drive output

O
O

Focus drive output
Reference voltage input pin for D/A

I

output block (TVD,FOD,FBA,TBAL)
Focus Balance adjust signal output

O

O

Tracking Balance adjust signal output

Focus error signal input(Analog input)

I

Tracking error signal input(Analog input)

I
I

RF envelope signal input(Analog input)

Vibration detect signal input(H:detect)

I

Off track signal input(H:off track)

I

Track cross signal input

I

RF detect signal input(L:detect)

I

BDO input pin(L:detect)

I

Laser ON signal output(H:on)

O

Pin
No.

41
42
43
44
45
46

47

48
49
50
51

52
53
54
55

56

57

58
59
60
61

62

63

64

65

66
67

68

69

70
71

72

73

74

75

76

77

78

79

80

symbol

TES

PLAY

WVEL
ARF

IREF

DRF

DSLF

PLLF

VCOF
AVDD2

AVSS2

EFM
PCK
PDO
SUBC
SBCK

VSS

XI

X2

VDD
BYTCK

CLDCK

FLAG
IPPLAG

FLAG

CLVS
CRC

DEMPH

RESY

IOSEL
TEST

AVDD1
OUT L

AVSS1
OUT R

RSEL

CSEL

PSEL

MSEL

SSEL

I/O

Tracking error shunt signal output(H:shunt)

O

I

Not used

I

Not used

I

RF signal input

I

Reference current input pin
Bias pin for DSL

I

I/O

Loop filter pin for DSL
Loop filter pin for PLL

I/O

I

Not used

I

Power supply(Analog)
Connected to GND(Analog)
Not used

III

Not used

I

Not used

I

Not used

I

Not used
Connected to GND(for X'tal oscillation

I

circuit)

Input of 16.9344MHz X'tal oscillation circuit

I

Output of X'tal oscillation circuit

O

I

Power supply(for X'tal oscillation circuit)

I

Not used

I

Not used

I

Not used

I

Not used

I

Not used

I

Not used

I

Not used
Not used

I

Not used

III

pull up

pull up

Power supply(Digital)

Lch audio output

O

I

Connected to GND
Rch audio output

O

II

pull up
Connected to GND

I

Connected to GND

I

Connected to GND

I

Pull up

Description

MN35510

1-17

KD-S576

LA6557-X(IC541) : Servo BTL driver

1. Block diagram

REW FWD S-GND MUTE VIN4 VING4 VCC-S FR

28 27 26 25 24 23 22

FR

VREF-IN REG-OUT REG-IN

VIN3G VIN3 VIN2G VIN2

21 20 19 18 17 16 15

Input

Mute

MUTE is as follows
High : output ON

Low : output OFF

11k

Signal system

power

Thermal shutdown

- +

- +

22k

11k

- +

11k

- +

22k

- +

22k

Output

control

CH5

POWER

CH3,4,5

1 2 3 4 5 6 7

VCC2 V05- V05+ V04+ V04- V03+ V03- FR V02+ V02- V01+ V01- VCC1 VIN1 VIN1G

Level

shift

CH4

Level

shift

CH3

- +

FR

Level

shift

CH2

8 9 10 11 12 13 14

Level

shift

CH1

22k

11k

POWER

CH1,2

- +

2.Pin function
Pin

No.

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

Pin

Name

VCC2

V05­V05+
V04+

V04­V03+

V03­V02+

V02­V01+

V01-

VCC1

VIN1

VIN1G

VIN2

VIN2G

VIN3

VIN3G

REG-IN

REG-OUT

VRFE-IN

VCC-S
VIN4G

VIN4

MUTE

S-GND

FWD

REV

Description

Power for channels 3,4, and 5 (VCC1 and VCC-S short-circuited)
Loading output (-)
Loading output (+)
Output pin (+) for channel 4
Output pin (-) for channel 4
Output pin (+) for channel 3
Output pin (-) for channel 3
Output pin (+) for channel 2
Output pin (-) for channel 2
Output pin (+) for channel 1
Output pin (-) for channel 1
Power for channels 1 and 2 (BTL), (VCC-S and VCC2 short-circuited)
Input pin for channel 1
Input pin for channel 1 (for gain control)
Input pin for channel 2
Input pin for channel 2 (for gain control)
Input pin for channel 3
Input pin for channel 3 (for gain control)
Regulator pin (External PNP base)
Regulator pin (External PNP collector)
Reference voltage input pin
Signal system power (VCC1 and VCC2 short-circuited)
Input pin for channel 4 (for gain control)
Input pin for channel 4
Output ON/OFF, channels 1 to 4 (BTL AMP)
Signal system GND
5CH(VL0) Output change pin (FWD), Logic input for loading block
5CH(VL0) Output change pin (REW), Logic input for loading block

1-18

LC72366-9989 (IC801) : Main micon

1. Pin layout
80 ~ 65

1

64

KD-S576

2. Pin function

Pin

No.

Symbol SymbolFunction Function

1
2
3
4
5
6
7

XIN

TEST2

J BUS SI

J BUS SO

J BUS SCK

J BUS I/O CONT

SUBQ

8

9
10
11
12
13
14
15
16
17
18
19
20

SQCK
RESET
LCD SI

LCD SO

LCDSCK

LCD CE

FM ILLUMI

AM ILLUMI

CD ILLUMI

DIMMER OUT

LM0
LM1

21
22
23
24
25
26
27

KS2
KS1
KS0

DET A CH

28
29
30
31
32
33
34
35
36

Vdd

SW2

CD LSI RESET

MCLK

MDATA

MLD

37
38
39
40

SCL
SDA

K2
K1
K0

~

24

~

25 ~ 40

4.5MHz crysral oscillation
Connect to ground
J-BUS signal data input ( to 74HC126 )
J-BUS signal data output ( to 74HC126 )
J-BUS output clock signal ( to 74HC126 )
J-BUS I/O control
CD LSI subcode data input
No use
CD LSI subcode clock
Micon reset pin
No use
LCD driver data output
LCD driver clock signal
LCD driver chip enable port
No use
No use
No use
No use
CD loading motor output
CD loading motor output
No use
No use
No use
No use
No use
Output for initial setting diode matrix
Front panel detect
No use
Input for initial setting diode matrix
Input for initial setting diode matrix
5V power supply
CD mechanism switch 2 for 12cm disc
CD LSI reset
CD LSI command clock signal
CD LSI command data output
CD LSI command load signal
No use
No use
E.volume clock output
E.volume data output

41

Pin
No.

41

CD ON
RELA Y

42

BBE CTL

43
44
45
46
47
48
49
50

CD SENSE

51

ST ATUS

52

P.SAVE2

53
54
55
56
57
58
59

60
61
62
63

SD/ST

REMOCON

J BUS INT

BAND

MONO

IFRQ/AGC

MUTE

LEVEL

S METER

KEY CHANGE

64
65
66

P.SAVE1

67

SENSE

68
69

FM IF COUNT

70
71
72
73

AM OSC

76

FM OSC

75
76
77
78

TEST1

79
80

XOUT

BEEP

SW4
SW1

SW3
REST
JOG0
JOG1

KEY2
KEY1
KEY0

Vdd

Vss

EO

CD 8V supply on
5V power control
No use
No use

CD mechanism switch 1 for disc in, 8cm disc
CD mecha. s witch 3 for disc present, loading end
CD pickup rest position
Rotary encoder input 0
Rotary encoder input 1
CD LSI sense signal
CD LSI status signal
Pow er save 2 : +B detect
Station detection, Stereo indication
Remocon input
J-BUS interrrupt
FM/AM band selection
FM mono selection

During FM auto search, IF request output H after SD
detected. During AM suto search, AGC output.

Muting switch
Level meter input
S meter input
Connect to ground
Key 2 data input (AD)
Key 1 data input (AD)
Key 0 data input (AD)
Pow er save 1, A CC pow er detect
V oltage sense
No use
FM IF counter data input
No use
No use
5V power supply
No use
FM input frequency
Ground
No use
PLL error output signal
Connect to ground

4.5MHz crystal oscillation

1-19

KD-S576

HA13158A (IC321) : Power amp

1. Pin layout

1 ~ 23

2. Block diagram

INVCC

IN1

2

STBY

1

14 18 6

PVCC1PVCC2

INPUTBUFFER1

AMP1

+

3

4

-

5

IN2

IN3

IN4

11

13

23

10

MUTE

INPUTBUFFER2

INPUTBUFFER3

INPUTBUFFER4

PROTECTOR (ASO
SURGE, TSD)

12 22

AMP2

AMP3

AMP4

TAB

7

+

8

-

9

15

+

16

-

17

19

+

20

-

21

1-20

HA13164(IC901):REGULATOR

1.Terminal layout

123456789101112131415

KD-S576

2.Block diagram

ANT OUT

C3

0.1u

EXT OUT

C4

0.1u

ANT CTRL

CTRL

CD OUT

C5

0.1u

AUDIO OUT

C6

10u

11

12

10

BATT.DET OUT

9

COMPOUT

6

VDD OUT

4

SW5VOUT

5

14

UNIT R:

+B

ACC

ILMOUT

R1

C7

0.1u

C8

0.1u

C1

100u

VCC ACC

8

2

1

7

Surge Protector

BIAS TSD

15

3

note1) TAB (header of IC)

connected to GND

ILM AJGND

13

C2

0.1u

C:F

3.Pin function

Pin No. Symbol Function

1
2

EXTOUT
ANTOUT

Output voltage is VCC-1 V when M or H level applied to CTRL pin.
Output voltage is VCC-1 V when M or H level to CTRL pin and H level

to ANT-CTRL.
3
4
5
6
7
8
9

10
11
12
13
14
15

ACCIN
VDDOUT
SW5VOUT
COMPOUT
ANT CTRL
VCC
BATT DET
AUDIO OUT
CTRL
CD OUT
ILM AJ
ILM OUT
GND

Connected to ACC.

Regular 5.7V.

Output voltage is 5V when M or H level applies to CTRL pin.

Output for ACC detector.

L:ANT output OFF , H:ANT output ON

Connected to VCC.

Low battery detect.

Output voltage is 9V when M or H level applied to CTRL pin.

L:BIAS OFF, M:BIAS ON, H:CD ON

Output voltage is 8V when H level applied to CTRL pin.

Adjustment pin for ILM output voltage.

Output voltage is 10V when M or H level applies to CTRL pin.

Connected to GND.

1-21