JVC KD-LH2000R Service Manual

SERVICE MANUAL

CD RECEIVER

KD-LH2000R

KD-LH2000R

Contents

Safety precaution
Preventing static electricity
Important for laser products
Disassembly method
Adjustment method

1-2
1-3
1-4
1-5
1-20

COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.

Flow of functional
operation unit TOC read
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs

E
EX

Area Suffix

Continental Europe

Central Europe

1-21
1-23
1-23
1-24~51

No.49753

Jun. 2002

KD-LH2000R

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

KD-LH2000R

Preventing static electricity

1.Grounding to prevent damage by static electricity

Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged,
can destroy the laser diode in the traverse unit (optical pickup). Take care to prev ent this when performing repairs.

2.About the earth processing for the destruction prevention by static electricity

Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
Be careful to use proper grounding in the area where repairs are being performed.

2-1 Ground the workbench

Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over
it before placing the traverse unit (optical pickup) on it.

2-2 Ground yourself

Use an anti-static wrist strap to release any static electricity built up in your body.

(caption)
Anti-static wrist strap

Conductive material
(conductive sheet) or iron plate

3. Handling the optical pickup

1. In order to maintain quality during transport and before installation, both sides of the laser diode on the
replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)

2. Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power
source can easily destroy the laser diode.

4.Handling the traverse unit (optical pickup)

1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.

2. Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific
details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse
unit. Be careful not to take too long a time when attaching it to the connector.

3. Handle the flexible cable carefully as it may break when subjected to strong force.

4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it

CD mechanism ass’y

Attention when traverse unit is decomposed

*Please refer to "Disassembly method" in the text for pick-up and how to
detach the substrate.

1.Solder is put up before the card wire is removed from connector on
the CD substrate as shown in Figure.
(When the wire is removed without putting up solder, the CD pick-up
assembly might destroy.)

2.Please remove solder after connecting the card wire with
when you install picking up in the substrate.

CD mechanism
control board

Soldering

Pickup unit

1-3

KD-LH2000R

Important for laser products

1.CLASS 1 LASER PRODUCT

2.DANGER : Invisible laser radiation when open and inter

lock failed or defeated. Avoid direct exposure to beam.

3.CAUTION : There are no serviceable parts inside the
Laser Unit. Do not disassemble the Laser Unit. Replace
the complete Laser Unit if it malfunctions.

4.CAUTION : The compact disc player uses invisible
laserradiation and is equipped with safety switches
whichprevent emission of radiation when the drawer is
open and the safety interlocks have failed or are de
feated. It is dangerous to defeat the safety switches.

VARNING : Osynlig laserstrålning är denna del är öppnad

och spårren är urkopplad. Betrakta ej strålen.

VARO : Avattaessa ja suojalukitus ohitettaessa olet

alttiina näkymättömälle lasersäteilylle.Älä katso
säteeseen.

5.CAUTION : If safety switches malfunction, the laser is able
to function.

6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.

CAUTION

!

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

ADVARSEL : Usynlig laserstråling ved åbning , når

sikkerhedsafbrydere er ude af funktion. Undgå
udsættelse for stråling.

ADVARSEL : Usynlig laserstråling ved åpning,når

sikkerhetsbryteren er avslott. unngå utsettelse
for stråling.

REPRODUCTION AND POSITION OF LABELS

WARNING LABEL

CLASS 1
LASER PRODUCT

DANGER : Invisibie laser radiation
when open and interlock or
defeated.
AVOID DIRECT EXPOSURE TO
BEAM (e)

VARO : Avattaessa ja suojalukitus
ohitettaessa olet alttiina
näkymättömälle lasersäteilylle.Älä
katso säteeseen. (d)

VARNING : Osynlig laserstrålning är
denna del är öppnad och spårren är
urkopplad. Betrakta ej strålen. (s)

ADVARSEL :Usynlig laserstråling
ved åbning , når
sikkerhedsafbrydere er ude af
funktion. Undgå udsættelse for
stråling. (f)

1-4

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.

KD-LH2000R

Front panel unit

Removing the bottom cover

(See Fig.2,3)

1.

Turn the body upside down.

2.

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

CAUTION:

When disengaging the joint c using a
screwdriver, do not damage or break the
board.

Removing the front chassis (See Fig.4,5)

Prior to performing the following procedure, remove
the bottom cover.

1.

Remove the two screws A attaching the front
chassis.

Joint a

Joint c

Bottom cover

Fig.1

Bottom cover

Joint b

Fig. 2

Joint b

2.

Remove the two screws B on each side of the body.

3.

Release the two joints d and the two joints e on the
sides. remove the front chassis toward the front.

Joint d

Joint e

B

Joint d

Front chassis

Fig. 5

Joint e

Joint a

A

Joint c

Fig. 3

Front chassis

Fig.4

1-5

KD-LH2000R

Removing the heat sink (See Fig.6)

1.

Remove the four screws C attaching the heat sink
on the left side of the body, and remove the heat
sink.

Removing the rear panel (See Fig.7 )

C

C

Heat sink

Fig. 6

C

Prior to performing the following procedure, remove
the front chassis, the heat sink and bottom cover.

1.

Remove the six screws D attaching the rear panel
and one screw E attaching the pine jack on the back
of the body.

D

Rear panel

Removing the main amplifier board assembly

(See Fig.8)

Prior to performing the following procedure, remove
the front chassis, the heat sink, bottom cover and the
rear panel.

D

Fig. 7

E

D

D

1.

Remove the two screws F attaching the main
amplifier board assembly on the top cover.

2.

Disconnect connector CN601 on the main amplifier
board assembly from the cassette mechanism
assembly.

1-6

F

Main board assembly

F

CN601

Fig. 8

KD-LH2000R

Removing the MP3 board

(See Fig.9)

Prior to performing the following procedure, remove
the top cover.

1.

Disconnect the wire from connector CN601on the
MP3 board.

2.

Remove the five screws G and the MP3 board,
releasing the joint f and g.

G

f

MP3 board

g

CN601

G

Fig.9

Removing the CD mechanism assembly

(See Fig.10)

Prior to performing the following procedure, remove
the front chassis, the heat sink, bottom cover and the
main amplifier board assembly.

1.

Remove the three screws H attaching the cassette
mechanism assembly from the top cover.

Top cover

H

H

H

CD mechanism assembly

Fig. 10

1-7

KD-LH2000R

Removing the (LCD & key) control switch

board (See Fig.11

Prior to performing the following procedure, remove
the front panel assembly.

1.

Remove the four screws I attaching the rear cover
on the back of the front panel assembly.

2.

Unjoint the nine joints h with the front panel and the
rear cover.

3.

Remove the control switch board on the back of the
front panel.

~ 13)

I

I

Fig. 11

I

I

Front panel

Joint h

LCD & Key control board

Joint h

Rear cover

Joint h

Joint h

Fig. 12

1-8

Fig. 13

< CD mechanism section >

Removing the top cover

(See Fig.1 and 2)

1.

Remove the two screws A on each side of the body.

2.

Lift the front side of the top cover and move the
cover backward to release the two joints a.

Removing the connector board

(See Fig.3 to 5)

Top cover

A

KD-LH2000R

A

Joints a

CAUTION:

1.

Remove the screw B fixing the connector board.

2.

Solder the short-circuit point on the connector board.
Disconnect the flexible wire from the pickup.

3.

Move the connector board in the direction of the
arrow to release the two joints b.

4.

Unsolder the wire on the connector board if
necessary.

CAUTION:

Before disconnecting the flexible wire
from the pickup, solder the short-circuit
point on the pickup. No observance of
this instruction may cause damage of
the pickup.

Unsolder the short-circuit point after
reassembling.

A

Fig.1

Joints a

Top cover

Fig.2

DET switch

B

Flexible wire

Frame

Connector board

B

Connector board

Joints b

Flexible wire

Short-circuit

Fig.3

Fig.4Fig.5

Pickup

Short-circuit point

(Soldering)

Pickup

1-9

KD-LH2000R

Removing the DET switch

(See Fig.3 and 6)

1.

Extend the two tabs c of the feed sw. holder and pull
out the switch.

2.

Unsolder the DET switch wire if necessary.

Removing the chassis unit

(See Fig.7 and 8)

Prior to performing the following procedure, remove
the top cover and the connector board.

B

Connector board

Joints b

Short-circuit

Fig.3

DET switch

Pickup

1.

Remove the two suspension springs (L) and (R)
attaching the chassis unit to the frame.

CAUTION:

The shape of the suspension spring (L)
and (R) are different. Handle them with
care.

CAUTION:

When reassembling, make sure that the
three shafts on the underside of the
chassis unit are inserted to the dampers
certainly.

Chassis unit

Suspension spring (R)

Suspension spring (L)

Frame

DET switch

Chassis unit

Tab c

Feed sw. holder

Tab c

Fig.6

Shaft

1-10

Suspension spring (R)

Suspension spring (L)

Shafts

Damper

Damper

Damper

Frame

Fig.8Fig.7

Removing the clamper assembly

(See Fig.9 and 10)

KD-LH2000R

Prior to performing the following procedure, remove
the top cover.

1.

Remove the clamper arm spring.

2.

Move the clamper assembly in the direction of the
arrow to release the two joints d.

Removing the loading / feed motor
assembly (See Fig.11 and 12)

Prior to performing the following procedure, remove
the top cover, the connector board and the chassis
unit.

1.

Remove the screw C and move the loading / feed
motor assembly in the direction of the arrow to
remove it from the chassis rivet assembly.

Clamper arm
spring

Joint d

Joint d

Clamper assembly

Fig.9

Clamper arm spring

Chassis rivet
assembly

Joint d

Clamper assembly

Joint d

2.

Disconnect the wire from the loading / feed motor
assembly if necessary.

CAUTION:

When reassembling, connect the wire
from the loading / feed motor assembly
to the flame as shown in Fig.11.

Chassis rivet assembly

Fig.10

Loading / feed motor assembly

C

Loading / feed motor assembly

Fig.12Fig.11

1-11

KD-LH2000R

Removing the pickup unit

(See Fig.13 to 17)

Prior to performing the following procedure, remove
the top cover, the connector board and the chassis
unit.

1.

Remove the screw D and pull out the pu. shaft
holder from the shaft.

2.

Remove the screw E attaching the feed sw. holder.

3.

Move the part e of the pickup unit upward with the
shaft and the feed sw. holder, then release the joint f
of the feed sw. holder in the direction of the arrow.
The joint g of the pickup unit and the feed rack is
released, and the feed sw. holder comes off.

4.

Remove the shaft from the pickup unit.

5.

Remove the screw F attaching the feed rack to the
pickup unit.

Reattaching the pickup unit

(See Fig.13 to 16)

Joint f

Shaft

D

Joint e

Pu. shaft holder

Feed sw. holder

Pickup unit

Fig.13

Pickup unit

E

Joint f

Joint e

1.

Reattach the feed rack to the pickup unit using the
screw F.

2.

Reattach the feed sw. holder to the feed rack while
setting the joint tab g to the slot of the feed rack and
setting the part f of the feed rack to the switch of the
feed sw. holder correctly.

3.

As the feed sw. holder is temporarily attached to the
pickup unit, set to the gear of the joint g and to the
bending part of the chassis (joint h) at a time.

CAUTION:

4.

Reattach the feed sw. holder using the screw E.

5.

Reattach the shaft to the pickup unit. Reattach the
pu. shaft holder to the shaft using the screw D.

Make sure that the part i on the underside
of the feed rack is certainly inserted to the
slot j of the change lock lever.

F

Feed rack

Feed rack

E

Joint g

Feed sw. holder

Part i

Pickup unit

Slot j

Joint g

Feed sw. holder

Fig.14

Shaft

Joint f

Joint h

Fig.15

D

Pu. shaft holder

Pickup unit

1-12

Pickup unit

Feed rack

Joint f

Feed sw. holder

Fig.17Fig.16

Removing the trigger arm

(See Fig.18 and 19)

Prior to performing the following procedure, remove
the top cover, the connector board and the clamper
unit.

1.

Turn the trigger arm in the direction of the arrow to
release the joint k and pull out upward.

KD-LH2000R

Joint k

Trigger arm

CAUTION:

When reassembling, insert the part l and

m of the trigger arm into the part n and
o at the slot of the chassis rivet

assembly respectively and join the joint
k at a time.

Chassis rivet assembly

Chassis rivet assembly

Trigger arm

Fig.18

Part n

Part o

Part l

Part m

Fig.19

Removing the top plate assembly

(See Fig.20)

Prior to performing the following procedure, remove
the top cover, the connector board, the chassis unit,
and the clamper assembly.

1.

Remove the screw H.

2.

Move the top plate assembly in the direction of the
arrow to release the two joints p.

3.

Unsolder the wire marked q if necessary.

H

Top plate assembly

Joints p

q

Fig.20

1-13

KD-LH2000R

Removing the select arm (L) / select lock
arm (See Fig.21 and 22)

Prior to performing the following procedure, remove
the top plate assembly.

1.

Bring up the select arm (L) to release from the link
plate (joint r) and turn in the direction of the arrow to
release the joint s.

2.

Unsolder the wire of the select arm (L) marked q if
necessary.

3.

Turn the select lock arm in the direction of the arrow
to release the two joints t.

The select lock arm spring comes off the select lock
arm at the same time.

Reassembling the select arm (L) / select
lock arm (See Fig.23 to 25)

Select arm (R)

Joint z

Link plate spring

Top plate

Joint a'

Joint y

Link plate

Joint z

Joint s

Fig.21

Select lock arm

Select lock arm

Joint b'

Joint r

Select arm (L)

Select lock arm

q

Top plate

Hook u

Select lock
arm spring

Joints t

REFERENCE:

1.

Reattach the select lock arm spring to the top plate

Reverse the above removing procedure.

and set the shorter end of the select lock arm spring
to the hook u on the top plate.

2.

Set the other longer end of the select lock arm spring
to the boss v on the underside of the select lock arm,
and join the select lock arm to the slots (joint t). Turn
the select lock arm as shown in the figure.

3.

Reattach the select arm (L) while setting the part r to
the first peak of the link plate gear, and join the joint
s.

CAUTION:

When reattaching the select arm (L),
check if the points w and x are correctly
fitted and if each part operates properly.

Joint r

Link plate

Link plate

Select lock arm spring

Boss v

Select arm (R)

Joint a'

Fig.22

Hook u

Joint t

Joint t

Select lock arm

Fig.23

Link plate spring

Select arm (L)

Joint b'

1-14

Joint r

Fig.25Fig.24

Joint s

Select
lock arm

Point x

KD-LH2000R

Removing the select arm (R) / link plate

(See Fig.21 and 22)

Prior to performing the following procedure, remove
the top plate assembly.

1.

Bring up the select arm (R) to release from the link
plate (joint y) and turn as shown in the figure to
release the two joints z and joint a’.

2.

Move the link plate in the direction of the arrow to
release the joint b’. Remove the link plate spring at
the same time.

REFERENCE:

Before removing the link plate, remove
the select arm (L).

Reattaching the Select arm (R) / link
plate (See Fig.25 and 26)

REFERENCE:

Reverse the above removing procedure.

Select arm (R)

Joint z

Link plate spring

Top plate

Joint a'

Part y

Link plate

Joint z

Joint s

Fig.21

Select lock arm

Select lock arm

Joint b'

Joint r

Select arm (L)

Select lock arm

q

Top plate

Hook u

Select lock
arm spring

1.

Reattach the link plate spring.

2.

Reattach the link plate to the link plate spring while
joining them at joint b’.

3.

Reattach the part y of the select arm (R) to the first
peak of the link plate while joining the two joints z
with the slots. Then turn the select arm (R) as shown
in the figure. The top plate is joined to the joint a’.

CAUTION:

When reattaching the select arm (R),
check if the part c’ is correctly fitted and
if each part operates properly.

Select arm (R)

Joint z

Link plate

Link plate spring

Joint a'

Part y

Part y

Fig.22

Joint b'

Joint z

Fig.25

Joints t

Select arm (L)

Select
lock arm

Point x

Fig.26

Link plate

1-15

KD-LH2000R

Removing the loading roller assembly

(See Fig.27 to 29)

Prior to performing the following procedure, remove
the clamper assembly and the top plate assembly.

1.

Push inward the loading roller assembly on the gear
side and detach it upward from the slot of the joint d’
of the lock arm rivet assembly.

Detach the loading roller assembly from the slot of
the joint e’ of the lock arm rivet assembly.

The roller guide comes off the gear section of the
loading roller assembly.

Remove the roller guide and the washer from the
shaft of the loading roller assembly.

2.

Remove the screw I attaching the lock arm rivet
assembly.

3.

Push the shaft at the joint f’ of the lock arm rivet
assembly inward to release the lock arm rivet
assembly from the slot of the slide plate. Extend the
lock arm rivet assembly outward and release the
joint g’ from the boss of the chassis rivet assembly.
The roller guide springs on both sides come off.

Roller guide

Washer

Loading roller assembly

Roller guide

Joint e'

Roller guide spring

Roller guide spring

Joint d'

Loading roller assembly

Roller guide spring

Lock arm rivet assembly

Fig.27

Loading roller assembly

Roller guide
spring

CAUTION:

When reassembling, reattach the left
and right roller guide springs to the lock
arm rivet assembly before reattaching
the lock arm rivet assembly to the
chassis rivet assembly. Make sure to fit
the part h’ of the roller guide spring (L)
inside of the roller guide (Refer to
Fig.30).

Roller guide

Washer

Roller shaft assembly

Joint h'

Loading roller assembly

Roller guide
spring

Fig.28-1

Fig.28-2

Chassis rivet assembly

Boss

Slide plate

Roller guide spring

I

1-16

Frame

Loading roller

Roller guide spring

Lock arm rivet assembly

Joint f'

Part g'

Fig.29Fig.30

KD-LH2000R

Removing the loading gear (5), (6) and
(7) (See Fig.31 and 32)

Prior to performing the following procedure, remove
the top cover, the chassis unit and the top plate
assembly.

1.

Remove the screw J attaching the loading gear
bracket. The loading gear (6) and (7) come off the
loading gear bracket.

2.

Pull out the loading gear (5).

Loading gear bracket

J

Loading gear (6)

Loading gear (5)

Loading gear (3)

Fig.31

J

Loading gear bracket

Loading gear (5)

Loading gear (6)

Loading gear (7)

Fig.32

1-17

KD-LH2000R

Removing the gears (See Fig.33 to 36)

Prior to performing the following procedure, remove
the top cover, the chassis unit, the top plate
assembly and the pickup unit.

1.

Pull out the feed gear.

Slot j'

Slide plate

2.

Move the loading plate assembly in the direction of
the arrow to release the slide plate from the two slots
j’ of the chassis rivet assembly.

3.

Detach the loading plate assembly upward from the
chassis rivet assembly while releasing the joint k’.
Remove the slide hook and the loading plate spring
from the loading plate assembly.

4.

Pull out the loading gear (2) and remove the change
lock lever.

5.

Remove the E-washer and the washer attaching the
changer gear (2).

6.

The changer gear (2), the changer gear spring and
the adjusting washer come off.

7.

Remove the loading gear (1).

8.

Move the hang plate rivet assembly in the direction
of the arrow to release from the three shafts of the
chassis rivet assembly upward.

9.

Detach the loading gear plate rivet assembly from
the shaft of the chassis rivet assembly upward while
releasing the joint l’.

Feed gear

Change plate
rivet assembly

Shafts

E-washer

Loading plate assembly

Joint k'
Slot j'

Fig.33

Joint l'

Loading gear (4)

Loading gear plate
rivet assembly

Loading gear (2)

Loading gear (1)

Change gear (2)

10.

Pull out the loading gear (4).

Loading plate assembly

Loading plate spring

Slot j'

Chassis rivet assembly

Joint k'

Slide hook

Slide plate

Slot j'

E-washer

Washer

Loading gear (2)

Loading plate spring

Adjusting washer

Change plate
rivet assembly

Chassis rivet assembly

Fig.34

Loading gear (1)

Loading gear (2)

Change lock lever

Loading gear (4)

Loading gear plate rivet assembly

Fig.36Fig.35

1-18

KD-LH2000R

Removing the turn table / spindle motor

(See Fig.37 and 38)

Prior to performing the following procedure, remove
the top cover, the connector assembly and the
chassis / clamper assembly.

1.

Remove the two screws K attaching the spindle
motor assembly through the slot of the turn table on
top of the body.

2.

Unsolder the wire on the connector board if
necessary.

K

Turn table

Fig.37

K

Turn table

Spindle motor

Fig.38

1-19

KD-LH2000R

Adjustment method

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
EXTSH002-22P 1

Standard measuring conditions
Power supply voltage : DC14.4V(11V~16V allwance)
Load impedance : 4 (4 to 8 allowance)
Line-out Level / Impedance:

2.0V / 20 k load

How to connect the extension cable for adjusting

Standard volume position
Balance and Bass &Treble volume : lndication"0"
S.BASS : O
EQ : FLAT
Frequency Band
FM 87.5MHz ~ 108.0MHz
AM (MW) 522kHz ~ 1620 kHz
(LW) 144kHz ~ 279 kHz

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.

Extension cables
EXTSH002-22P

CN601

Doing such as cardboard puts finishing
between the main body and mechanism.

fixes with rubber band.

1-20

Flow of functional operation unit TOC read

Power ON

When the pickup correctly moves

v

to the inner area of the disc

Set Function CD

KD-LH2000R

When the laser diode correctly

emits

Microprocessor
commands

FMO
TC94A14FA" 40"

FEED MOTOR
+TERMINAL
IC681

REST SW

When correctly focused

FEO
TA2157" 15"

Focus Servo Loop ONo

$83

$82

$81

3.3V
Hi-Z
0V

6V
4V
2V

OFF
ON

Pickup feed to the inner area

2.2V

RF signal eye-patternn
remains closed

RF signal eye-pattern
opens

Disc inserted

YES

Laser emitted

Focus search

Disc rotates

Tracking loop closed

TOC read out

YES

Microprocessor
commands

SEL
TC94A14FA"38"

LD
CN601"8"

"No disc"
display

When the disc correctly rotates

Microprocessor
commands

DMO
TC94A14FA"41"

Spindle
motor(-)
IC681"7"

$84 $86 $ A200

Acceleration Servo CLV

Rough
Servo

0.5 Sec 0.5 Sec

$84

3.3V
0V

2V
0V

3.3V

2.2V
0V

6V

3.2
2V

Jump to the first track

Play

Tracking Servo Loop ON

RF signal

Rough Servo Modev

CLV Servo Mode
(Program Area)

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

1-21

KD-LH2000R

Feed section

Is the voltage output at
IC621 pin "40" 3.3V or 0V?

YES

Is 4V present at both
sides of the feed motor?

YES

NO YES NO

NO

Is the wiring for IC621

(56)~(64) correct?

NO

Is 6V or 2V present at

IC681 "4" and "5"?

NO

Is 3.3V present at IC681

pin "20"?

Check the vicinity of

IC621.

YES

Check the feed motor

connection wiring.

YES

Check CD 8V

and 5V.

Check the feed motor.

Focus section

When the lens is

moving:

4V

Does the S-search

waveform appear at

IC681 pins "10" and "11"?

Spindle section

Is the disk rotated?

YES

Does the RF signal

appear at TP1?

YES

Is the RF waveform at TP1

distorted?

YES

Proceed to the Tracking

section

Check IC681.

NO

YES

NO

NO

NO

Check the circuits in
the vicinity of IC681
pins "10","11"and"14".

Check the pickup and

its connections

Is 4V present at IC681

pins "6" and "7"?

Check the spindle motor

and its wiring

Check the circuits in the

vicinity of IC601 "19"~

"24" or the pickup

YES

YES

NO

Is 3.3V present at IC621

pins "41" ?

Check the vicinity of

IC681.

NO

YES

Check IC621 and

IC601.

Tracking section

1-22

When the disc is rotated

at first:

Approx. 1.2V

Is the tracking error signal

output at IC601 "11"?

YES

Check IC621.

YES YES

Check the circuit in the

vicinity of IC601 pins

"2"~"12".

Check the pickup and

its connections

Maintenance of laser pickup

(1) Cleaning the pickup lens
Before you replace the pickup,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:amplitude
of eye patterrn) will be low.

KD-LH2000R

Is RF output

1.3 0.4Vp-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 of the power switch and, disconnect the
power cord.

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..

Play a disc.

Check the eye-pattern at TP1.

Finish.

1-23

KD-LH2000R

Description of major ICs

UPD784215AGC179 (IC701) : CPU

1.

Pin

layout

75 ~ 51

76

~

100

1 ~ 25

50

~

26

2. Pin function

Pin NO. Symbol Function

1~7

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

41~43

44
45
46
47
48

49~52

53

NC

ANT CONT

VDD

X2

X1
VSS
XT2
XT1

RESET

NC

BUS-INT

PS2

CD-REQ

RDS-SCK

RDS DA

KEY DATA

AVDD

AVREF0

VOL1
VOL2
KEY1
KEY2

NC

MRC

SQ
SM

AVSS

NC

STAGE3

AVREF
BUS-SI

BUS-SO

BUS-SCK

BUS-I/O

NC

BUZZER

E2PROM-DI

E2PROM-DO

E2PROM-CLK

OPEN

NC

SD/ST

I/O

-

­Antenna remote control

O

Maicon power supply

I
I

O

GND

I
I

O

SYSTEM RESET

I

-

­J-BUS INT

I

Power save2, H means STOP mode

I

CD REQ INPUT

I

RDS clock input

I

RDS data input

I

KEY DATA

I

A/D converter power supply

I

A/D reference voltage

O

Volume encoder pulse input 1

I

Volume encoder pulse input 2

I

Handle remocon input 1

I

Handle remocon input 2

I

-

­MRC input

I

S.Quality level input

I

S.METER input

I

GND

I

-

­Feature selection H:2000 L:1000

I
I

J-BUS data input

I

J-BUS data output

O

J-BUS clock input / output

I/O

J-BUS I/O selection output:H, input:L

O

-

­Buzzer output

O

I2C data input

I

I2C data output

O

I2C clock output

O

DOOR OPEN SW

I

-

­Station detector or streo indica tor i nput ;

I

H means a station is there. L means the program is stereo.

1-24

KD-LH2000R

Pin NO. Symbol Function

54~56

57
58
59
60
61
62
63
64
65
66
67
68
69

70
71

72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90

91~93

94

95~98

99

100

NC

DISP SCK

DISP DA
DISP CE

NC

DETACH

AFCK

SEEK/STOP

CF SEL

FM/AM
PLL-CE
PLL-DO

PLL-CLK

PLL-DI

TEL-MUTING

DIM-OUT

VSS

DIM-IN

PS1

POWER

NC

MUTING

CD MUTING

CD RESET

NC

VDD

NC

VOL-DA

VOL-CLK

NC

SUB MUTING

LPF 1

LPF 2
STAGE2
STAGE1

NC

TEST

NC

DISC SEL

NC

I/O

-

­DISPLAY SCK

O

DISPLAY DATA

O

DISPLAY CE

O

-

­Detach detect input ; H m eans detaching

I

AF check output

O

Auto seek and stop selecting output ; H mea ns seek i ng, L means receiving.

O

Wide & Narrow

O

FM, AM band selecti ng output ; H = FM,L= AM

O

CE output for PLL IC

O

Data output for PLL IC

O

Clock output for PLL IC

O

Data input from PLL IC

I

Telphone muting detection input ;

I

Active level can be selected H or L in PSM
Dimmer detector output

O

GND

I

Dimmer detector input L=dimmer on

I

POWER SAVE1 L= ACC off

I

POWER ON/OFF control output H=power on

O

-

­Muting output L=muting on

O

CD MUTE INPUT L=MUTE ON

I

CD RESETCONTROL OUT H=RESET ON

O

-

­Maicon power supply

I

-

­Data output for e-vol IC

O

Clock output for e-vol IC

O

-

­Muting control output for subwoofer

O

LPF CONTROL 1

O

LPF CONTROL 2

O

Feature selection H:R or Do L:J or U

I

Feature selection H:R or U L:J or Do

I

-

­For rewriting flash memory

I/O

-

­8cmCD SELECT L=NO USE H=USE

O

-

-

1-25

KD-LH2000R

UPD784225GK-626 (IC501) : CPU

1.Pin layout
80 ~ 61

1 ~ 20

21 ~ 40

2.Pin function

Pin

Symbol

no.

1

TEMP

2

GND

3

GND

4

AVSS

5

ADCONT

6

NC

7

AVREF1

8

EPROMDI

9

EPROMDO

10

EPROMCK

11

LCDCE/SO

12

LCDDA/SI

13

LCDCK

14

/BUSIO

15

BUSIO

16

BUSSI

17

BUSSO

18

BUSSCK

19

BUSOUT

20

CDON

21

CDREQ

22

CDMUTE

23

NC

24

DSPRESET

25

CCE

26

BUCK

27

BUS3

28

BUS2

29

BUS1

30

BUS0

31

2XPLAY

32

RWSEL

33

VSS1

34

LOAD

35

LD/FE

36

MP3DI

37

MP3DO

38

MP3CK

39

MP3RESET

40

MPSSTB

60 ~ 41

I/O

Connect to TEMP detecter

I 41

Connect to GND

-

Connect to GND

-

Connect to GND

-

No use

-

No use

-

Analog reference voltage

-

Data input terminal from EEPROM

I

Data output terminal from EEPROM

O

Clock signal I/O terminal with EEPROM

I/O

No use

-

No use

-

No use

-

J-BUS data I/O terminal

I/O

J-BUS data I/O terminal

I/O

J-BUS data input

I

J-BUS data output

O

J-BUS clock I/O

I/O

No use

-

The CD power supply control signal output.At CD:H

O

CD request

I

CD Mute

O

No use

-

DSP reset

O

CE output for data communication with CDLSI

O

Clock output for data communication with CDLSI

O

Data communication input output port 3 with CDLSI

I/O

Data communication input output port 2 with CDLSI

I/O

Data communication input output port 1 with CDLSI

I/O

Data communication input output port 0 with CDLSI

I/O

No use

-

CD RW select

I

Connect to GND

-

Loading signal

O

LDFLE switching signal

O

MP3 data input

I

MP3 data output

O

MP3 data clock

O

MP3 data reset

O

MP3 data standby

I

Function Function

Pin
no.

42
43
44
45
46
47
48
49
50
51
52
53
54
55

TEST MODE

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

NC
NC
NC

DACML
DACMC
DACMD

DACCS

NC
NC
NC
NC

DISCSEL

DACSEL

NC

MP3SEL

8VDET

REST

SW2

RESET

SW1

B.DET

P.DET

BUSINT

MP3REQ

NC
VSS0
VDD1

X2

X1
VPP
XT2
XT1

VDD0
AVDD

IOP

KEY0
KEY1
KEY2
KEY3

I/O

Non use

-

Non use

-

Non use

-

DAC mode control latch

O

DAC mode control clock

O

DAC mode control data

O

DA convertor chip select

I

No use

-

No use

-

No use

-

No use

-

Initial setting

O

DA convertor select

O

No use

-

Connect to GND

-

MP3/CD-DA switch SW L:CD H:MP3

O

8V detection

I

System reset signal input

I

Detection switch of CD mechanism

I

Reset detection terminal
Detection switch of CD mechanism

I

Panel switch detection

I

Power switch detection

I

J-BUS signal interrupt input

I

MP3 request

O

No use

-

Connect to ground

-

Reference voltage terminal

-

No use

-

Connect to X'tal osc.

I

Test terminal

I

Non use

-

Connect to ground

-

Connect to ground

-

Reference voltage terminal

-

Laser signal input output

I/O

Key control signal input 0

I

Key control signal input 0

I

Key control signal input 0

I

Key control signal input 0

I

1-26

2.Pin functions (2/2)

KD-LH2000R

Pin No.

47

48~51

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

DAC CS

-

DISC SEL

DAC SEL

-

TEST MODE

MP3 SEL

8V DET

REST

SW2

RESET

SW1
B.DET
P.DET

BUS INT

MP3 REQ

­VSS0
VDD1

X2

X1
VPP
XT2
XT1

VDD0
AVDD

IOP
KEY0
KEY1
KEY2

KET3

I/O

O

­I
I

­I
I
I
I
I
I
I
I
I
I
I

-

-

-

O

I

-

O

I

-

­I
I
I
I
I

Function
DAC chip select terminal
No use
8cm disc correspondence mode select terminal (respondance:L)
DAC select mode input terminal

­LCD/AD key/Remocon invalid select mode input terminal L:invalid
MP3 select mode input terminal
CD mechanism power supply detection terminal (L:8V on)
CD mechanism rest switch input terminal
CD mechanism SW2 input terminal
Riset signal input terminal
CD mechanism SW1 input terminal
Backup power supply detection input terminal (H:Stop mode)
Main power off detection input terminal (H:HALT mode)
JVC BUS communication start squeeze input terminal
CD MP3 request signal input terminal

­Connect to GND
Connect to 3.3V
Oscillator (6MHz)
Oscillator (6MHz)
Connect to GND
Open
Connect to GND
Connect to 3.3V
Connect to ADCONT
Pickup IOP measurement input terminal
Key input 0 (8bit A/D input) terminal
Key input 1 (8bit A/D input) terminal
Key input 2 (8bit A/D input) terminal
Key input 3 (8bit A/D input) terminal

1-27

KD-LH2000R

BR24C01AFV-W (IC502) : EEPROM

1.Pin layout

2.Block diagram

1

A0

A1

2

Vcc WPIN SCL

SDA

A0 A1 A2 GND

1kbit EEPROM ARRAY

7bit

ADDRESS
DECODER

SLAVE/WORD

7bit

ADDRESS REGISTER

8bit

DATA
REGISTER

8

7

Vcc

WPIN

A2

3

GND

4

3.Pin function

Pin name I/O

Vcc

GND

A0,A1,A2

SCL

SDA

CONTROL LOGIC

HIGH VOLTAGE GEN.

-

­IN
IN

IN / OUT

START

STOP

ACK

Vcc LEVEL DETECT

Function

Power supply
Ground (0v)
Slave address set
Serial clock input

Slave and word address,
serial data input, serial data output *1

SCL

6

SDA

5

1-28

WPIN

*1 An open drain output requires a pull-up resister.

IN

Write protect input

HA13164A (IC901) : Regulator

1.Terminal layout

EXT

ANT

ACC

VDD

SW5V

ACC5V

ANT.CTRL

MEMORY

123456789101112131415

BATT.DET9VCTRL

CD8VAJILMI

KD-LH2000R

GND

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

TAB

note1) TAB (header of IC)

connected to GND

ILM AJGND GND

13

C2

0.1u

C:F

3.Pin function

Pin No. Symbol Function

1
2

EXT
ANT

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

ACC
VDD
SW5V
COMP
ANT CTRL
MEMORY
BATT DET
9V
CTRL
CD8V
AJ
ILMI
GND

Connected to ACC.

Regular 5.7V.

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

Connected to GND.

1-29

KD-LH2000R

HD74HC126FP-X (IC781) : Buffer

1.Terminal layout

1C

1

1A

2

1Y

3

2C

4

2A

5

2Y

6

GND

7

2.Block diagram

Input

VU

14

4C

13

4A

12

4Y

11

3C

10

3A

9

3Y

8

Vcc Vcc

1A
2A
3A
4A
1C
2C
3C

See Function Table

4C

3.Pin function

Output

1Y

2Y

Output

2Y

Output

3Y

Output

4Y

Input

C
L
H
H

A
X
L
H

Output

Y
Z
H
L

Note) H:High level

L:Low level
X:Irrelevant
Z:Off(High-impedance)
State a 3-state input

1k

S1

CL

1k

Sample as Load Circuit 1
Sample as Load Circuit 1

Sample as Load Circuit 1

1-30

Note) CL includes probe and jig capacitance

HD74HCT126T : (IC503) Buffer

KD-LH2000R

1.Terminal layout

Vcc
14

1

1C

2.Block diagram

4C
13

2

1A

3

1Y

1A

4A
12

4Y
11

4

2C

3C
10

5

2A

3A
9

6

2Y

3Y
8

7

GND

3.Pin function

INPUT

C
L
H
H

H : High level
L : Low level
X : Irrelevant

Off (Hhigh-impedance)state of a 3-stage

Z :

output

OUTPUT

A
X
L
H

Y
Z
H
L

1C

2A

2C

3A

3C

4A

1Y

2Y

3Y

4C

4Y

1-31

KD-LH2000R

IC-PST9322U-X (IC803) : Regulator

1. Pin layout

2. Block diagram

NC 1

GND 2

3. Pin function
Pin No.

1
2
3
4

Symbol

GND

VOUT

Vcc

4 Vcc

3 VOUT

Function

NC

Non connect
GND terminal
Reset signal output terminal
Vcc terminal/Voltage detect terminal

Vcc 4

NC 1

3 VOUT

2 GND

IC-PST9333U-X (IC702) : Regulator

1. Pin layout

NC 1

GND 2

3. Pin function
Pin No.

1
2
3
4

Symbol

GND

VOUT

Vcc

4 Vcc

3 VOUT

Function

NC

Non connect
GND terminal
Reset signal output terminal
Vcc terminal/Voltage detect terminal

Vcc 4

NC 1

2. Block diagram

3 VOUT

2 GND

1-32

M61508FP-X (IC111) : E. volume

1. Pin layout & Block diagram

VCC
(Analog)

2. Pin function

Pin No.

1
2
3

DEFP IN1

DEFN IN1
4
5
6
7
8
9

DEFN OUT1

SEL OUT1
10
11
12
13
14
15

TONE OUT1

FADER IN1

REAR OUT1

FRONT OUT1

NonFader OUT1
16
17
18
19

VDDOUT1

VDDOUT2
20
21
22

NonFader OUT2
23
24
25
26

FRONT OUT2

REAR OUT2

FADER IN2

TONE OUT2
27
28
29

SEL OUT2

DEFN OUT2
30
31
32
33
34
35

DEFN IN2
DEFP IN2

36

REF

Symbol Function

REF

Grand for IC signal
Differential motion amp. Positive terminal

Differential motion amp. Negative terminal
INA1
INB1
INC1
IND1

Input terminal of input selector switch channel 1

Input terminal of input selector switch channel 1

Input terminal of input selector switch channel 1

Input terminal of input selector switch channel 1

Differential output terminal (-)

Input selector output terminal

VOL IN1

Volume 1 input terminal

Tone output terminal

Volume 2 input terminal

Fader volume control (Rear) output terminal

Fader volume control (Front) output terminal

Non fader volume output terminal
GND

DATA

GND terminal

Control data input terminal

Test terminal

Test terminal

CLOCK

VDD

Clock input terminal for serial data transport

Power supply terminal for digital

Non fader volume control output terminal

Fader volume (Front) output terminal

Fader volume (Rear) output terminal

Volume 2 input terminal

Tone output terminal

VOL IN2

Volume 1 input terminal

Input selector output terminal

IND2
INC2
INB2
INA2

VCC

Input terminal of input selector switch channel 2

Input terminal of input selector switch channel 2

Input terminal of input selector switch channel 2

Input terminal of input selector switch channel 2

Power supply terminal

50K

27282930313233343536

LOUDNESS

+

3BAND TONE CONTROL

(BASS/MID/TREBLE)

ZERO CROSS
DETECTOR

ZERO CROSS
DETECTOR

LOUDNESS

+

3BAND TONE CONTROL

(BASS/MID/TREBLE)

A
B

B
A

2526

Zero detect
Select SW

121110987654321

24 23 22 21 20 19

VDO

(Digital)

Soft select

12dB

I/F

12dB

TIMER
DETECTOR

GND

13 14 15 16 17

KD-LH2000R

18

1-33

KD-LH2000R

LA6579H-X (IC681) : 4-Channel bridge driver

1. Pin layout & Block diagram

VIN1-A

VIN1+A

VCCP1

1

­+

2

3

VIN1_SW
[H]: OP-AMP_A
[L]: OP-AMP_B

[H]

[L]

28

VIN1

27

VIN1-B

-

+

26

VIN1+B

VO1+

VO1-

VO2+

VO2-

GND

VO3+

VO3-

VO4+

4

5

6

7

FR

8

9

10

Power system
GND

Level shift

33k

11k

-

Signal system
power supply

25

S-GND

+

24

VIN1-SW

Level shift

­+

Level shift

Level shift

All outputs ON/OFF

H : ON

L : OFF

3.3VREG
(External:PTP Tr)

MUTE

Power system GND

Signal system
power supply

23

MUTE

22

VREFIN

FR

21

20

GND

VCCS

3.3VREG

+

-

19

REGIN

1-34

VO4-

VCCP2

VIN4

VIN4G

11

12

13

14

11k

33k

­+

33k

33k

18

VIN2G

11k

-

17

VIN2

+

16

VIN3G

11k

-

15

VIN3

+

3.Pin function

Pin No. Symbol Function

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

VIN1-A
VIN1+A
VCCP1
VO1+
VO1­VO2+
VO2­VO3+
VO3­VO4+
VO4­VCCP2
VIN4
VIN4G
VIN3
VIN3G
VIN2
VIN2G
REGIN

3.3VREG
VCCS
VREFIN
MUTE
VIN1_SW
S_GND
VIN1+B
VIN1-B
VIN1

CH1 input AMP_inverted input
CH1 input AMP_non-inverted input
CH1 and CH2 power stage power supply
Output pin(+)for channel 1
CH1 output pin (-) for channel 1
Output pin(+)for channel 2
Output pin(-)for channel 2
Output pin(+)for channel 3
Output pin(-)for channel 3
Output pin(+)for channel 4
Output pin(-)for channel 4
CH3 and CH4 power stage powr supply
Input pin for channel 4
Input pin for channel 4(for gain adjustment)
Input pin for channel 3
Input pin for channel 3(for gain adjustment)
Input pin for channel 2
Input pin for channel 2(for gain adjustment)
External PNP transistor, base connection

3.3VREG output pin, external PNP transistor,collector connection
Signal system GND
Reference voltage application pin
Output ON/OFF pin
CH1 input OP AMP_changeover pin
Signal system GND
CH1 AMP_B non-inverted input pin
CH1 AMP_B inverted input pin
CH1 input pin, input OP_AMP output pin

KD-LH2000R

NJU7241F33-X (IC804,IC504) : Voltage regulator

PIN FUNCTION

1

5

2

3

4

1. GND

IN

2. V

3. V

OUT

4. +NC

5. STB

1-35

KD-LH2000R

MN102H60KCC (IC801) : CPU

1.

Pin

layout

75 ~ 51

76

~

100

1 ~ 25

50

~

26

2. Pin function

Pin NO. Name Function

1
2
3
4
5
6
7
8

9
10
11
12

13~16

17
18
19
20
21
22
23
24
25

26~33

34

35~42

43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60

RES

RE
NC
NC
NC

CS0
SWLED7
SWLED4
SWLED5
SWLED6

NC

/WORD

A0~A3

VDD

NC

VSS

XI

XO

VDD

OSCI
OSCO
MODE

A4~A11

AVDD

A12~A19

AGND

ANA

Thermal

STOP

WDOUT

PON

RD

LCDCLK

WR
COLOR1
COLOR2

AVDD

RS
CS

COLOR3

VOL1
VOL2

SWLED3

I/O

LED reset input terminal

O

Redoinabl output terminal for enhancing memory

O

No connected

O

No connected

O

No connected

O

Chip selection 0 output terminal for enhancing memory

O

Output for SW_LED Flushing 7 (LED for cross key cover )

O

Output for SW_LED Flushing 4 (LED for [PRESET4-6] key)

O

Output for SW_LED Flushing 5 (LED for [SEEKUP]+[SEEKDOWN] key)

O

Output for SW_LED Flushing 6 (LED for [DISKUP]+[DISKDOWN] key)

O

No connected

O

Setting of width of bus of enhancing memory (H : 8bit)

I

Enhancing memory output terminal 0~3

O

Power supply terminal

­Base clock output terminal

O

GND

­Connects with GND

I

Opening

O

Power supply terminal

­Crystal connection terminal (12.5MHz)

I

Crystal connection terminal (12.5MHz)

O

Mode set input terminal, pull-up (H : Memory extension mode)

I

Enhancing memory output terminal 4~11

O

Analog power supply terminal

­Enhancing memory output terminal 12~19

O

Analog, standard power supply terminal, connects with GND

­Audio level input for speana

I

Temperature fuse input

I

Stop state output terminal (At stop "H")

O

Watch dock timer overflow output terminal (At overflow "H")

O

Power supply on output terminal

O

LCD redostororb output terminal

O

LCD clock output for driver (180MHz)

O

LCD raitostororb output terminal

O

PWM output for color LED 1

O

PWM output for color LED 2

O

Analog, standard power supply terminal, connects with GND

­LCD resist selection output terminal

O

LCD chip selection output terminal

O

PWM output for color LED 3

O

Rotary encoder input 1

I

Rotary encoder input 2

I

Output for SW_LED Flushing 3 (LED for [PRESET1-3] key)

O

1-36

KD-LH2000R

Pin NO. Name Function

61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83

84~91

92

93~100

AGND

KEYO
KEY1
KEY2
KEY3

VDD
SWLED0
SWLED1
SWLED2

DISPCLK

DISPDATA

KEYDATA

SIFDA
SIFCK

GND

DISPCE

GND

PSAVE2

REMOTE

KEY_IN
ADSEP

RST

VDD

D0~D7

VSS

LCDDB0~LCDDB7

I/O

Analog terminal GND

­KEY0 input AD terminal

I

KEY1 input AD terminal

I

KEY2 input AD terminal

I

KEY3 input AD terminal

I

­Output for SW_LED Flushing 0 (LED for [VOL] key)

O

Output for SW_LED Flushing 1 (LED for [MODE]+[DISP]+[EQ] key)

O

Output for SW_LED Flushing 2 (LED for [CD / CD-CH]+[FM / AM] key)

O

Clock input for serial communications

I

Display data input (Cereal)

I

Key code data output (Cereal)

O

Onboard cereal writing data I/O terminal, Pull-up

I/O

Onboard cereal writing clock input terminal, Pull-up

I
I

Tippinabl input for serial communications

I

O

POWER SAVE 2 (Memory power supply OFF) detection input

I

Remote control input by codes terminal

I

Key interrupt input

I

Address data separation / common mode set terminal (H : Separation mode)

I

Reset input terminal ("L" resets by the input)

I

Power supply terminal

­Enhancing memory input terminal 0~7

I

GND

­LCD data bus I/O terminal 0~7

I/O

BU4066BCFV (IC131) : Quad analog switch

1.Pin layout & Block diagram
VDD CONT1 CONT4 IN4 IN3OUT4 OUT3

14 13 12 11 810 9

1234 756

IN1 OUT1 OUT2 IN2 VssCONT2 CONT3

1-37

KD-LH2000R

TA2157FN-X(IC601):RF amp

1.Terminal layout

2.Block diagram

24 ~ 13

1 ~ 12

13

14

15

16

17

18

19

20

21

10pF

20k

20k

40k30k

20k 20k

15k

50 A

12k

12k

BOTTOM

PEAK

20k

20k

20k

PEAK

1.3V

40k

40k

240k

15pF

240k

15pF

50k

2k

20k

50k

14k

K

1

15k

x0.5
x2

x0.5
x2

1k

2k

1.75k

10pF

12

11

10

9

8

7

6

5

4

1-38

22

23

24

PIN SEL

VCTRLPIN

VCC

HiZ

GND

3k

3k

(APC SW)

APC ON

APC ON

APC OFF
(LDO=H)

180k

40pF

TEB

(TE BAL)

-50%

0%

+50%

180k

40pF

60k

60k

94k
22k

94k

22k

RFGC

(AGC Gian)

+12dB

+6dB

0dB

3

2

1

TEB

(TE BAL)

Normal mode

(0dB)

Normal mode

(0dB)

CD-RW mode

(+12dB)

3.Pin function

Pin No. Symbol I/O Function

1

VCC

2

FNI

3

FPI

4

TPI

5

TNI

6

MDI

7

LDO

8

SEL

-

3.3V power supply pin

I

Main-beam amp input pin

I

Main-beam amp input pin

I

Sub-beam amp input pin

I

Sub-beam amp input pin

I

Monitor photo diode amp input pin

O

Laser diode amp output pin

I

APC circuit ON/OFF control signal, laser diode (LDO) control signal input
or bottom/peak detection frequency change pin.

KD-LH2000R

TA2175FN-X

9

10
11

12
13

TEB

TEN
TEO

RFDC
GVSW

SEL
GND

Hiz
VCC

I

Tracking error balance adjustment signal input pin
Adjusts TE signal balance by eliminating carrier component from PWM
signal (3-state output,PWM carrier = 88.2kHz) output from TC94A14F/FA
TEBC pin using RC-LPF and inputting DC.
TEBC input voltage:GND~VCC

I

Tracking error signal generation amp negative-phase input pin

O

Tracking error signal generation amp output pin.
Combining TEO signal RFRP signal with TC94A14F/FA configures tracking
search system.

O

RF signal peak detection output pin

I

AGC/FE/TE amp gain change pin

GVSW Mode
GND

Hiz
VCC

APC
circuit

OFF Connected VCC through 1k resistor
ON
ON

Control signal output
Control signal output

CD-RW
Normal

LDO

14
15

16
17

18
19
20

21
22
23
24

VRO
FEO

FEN
RFRP

REIS
RFGO
RFGC

AGCIN
RFO
RFI
GND

O

Reference voltage (VRO) output pin
VRO=1/2VCC When VCC=3.3V

O

Focus error signal generation amp output pin

I

Focus error signal generation amp negative-phase input pin

O

Signal amp output pin for track count
Combining RFRP signal and TEO signal with TC94A14F/FA configures
tracking search system.

I

O

RF signal amplitude adjustment amp output pin

I

RF amplitude adjustment control signal input pin
Adjusts RF signal amplitude by eliminating carrier component from PWM
signal (3-state output,PWM carrier=88.2kHz)output fromTC94A14F/14FA
RFGC pin using RC-LPF and inputting DC.
RFGC input voltage:GND~VCC

I

RF signal amplitude adjustment amp input pin

O

RF signal generation amp output pin

I

RF signal generation amp input pin

-

GND pin

1-39

KD-LH2000R

TA8273H(IC951):Power AMP

1.Block diagram

INRF

0.22 F

AC CONT1

INRR

0.22 F

+

Vcc 1/2 Vcc 3/4

2200 F 0.022 F

6 20

+

11

-

+

+

-

9

7

OUT RF+

OUT RF-

1

Protective

circuit

+

-

+

12

+

-

GND

8

OUTRR+

5

OUTRR-

3

GND

2

ST BY

REF

47 F

INLF

AC CONT2

PRE GND

INLR

+5V
ST ON

+

0.22 F

+

0.22 F

4

Stand by

Switch

Mute

10

+

Ripple

Filter

Mute

22

circuit

3.3 F

+

15

-

+

-

17

19

10K

+

OUTLF+

OUTLF-

Low Level
Mute ON

25

18

21

23

GND

OUTLR+

OUT LR-

13

14

Protective

circuit

-

+

+

-

1-40

ON TIME

22 F

Muting &

16

+

ON Time Control

Circuit

GND

24

2.Terminal layout

GND

GND

OUT1-

STBY

OUT1+

VP1

OUT2-

GND

OUT2+

SVRR

IN2

IN1

SGND

IN4

IN3

AC-GND

OUT3+

GND

OUT3-

VP2

OUT4+

MUTE

OUT4-

GND

KD-LH2000R

HSO

3.Pin function

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

SymbolPin No. Function

GND
GND
OUT1­STBY
OUT1+
VP1
OUT2­GND
OUT2+
SVRR
IN2
IN1
SGND
IN4
IN3
AUX
OUT3+
GND
OUT3­VP2
OUT4+
MUTE
OUT4­GND
HSO

Header of IC
Power GND
Outpur(-) for Rear Rch
Stand by input
Output (+) for Rear Rch
Power input
Output (-) for Front Rch
Power GND
Output (+) for Front Rch
Ripple filter
Front Rch input
Rear Rch input
Signal GND
Rear Lch input
Front Lch input
Power on time control
Output (+) for Front Lch
Power GND
Output (-) for Front Lch
Power input
Output (+) for Rear Lch
Muting control input
Output (-) for Rear Lch
Power GND
Header of IC

TA8273H

1-41

KD-LH2000R

TC94A14FA (IC621) : D.SURVO & DSP

1.Terminal layout & block diagram

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

48 47 46 45 44 43 42 41 40 39

Clock

generator

Micro-

controller

interface

1-bit
DAC

Audio out

circuit

Address

circuit

circuit

Correction

Digital
output

16 k

RAM

PWM

Servo

control

ROM
RAM

CLV servo

Synchronous

guarantee

EFM

decoder

Sub code

decoder

38 37 36 35 34 33

D/A

A/D

Digital equalizer

automatic

adjustment circuit

Data

slicer

VCO

PLL

TMAX

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

64

2.Pin function

Pin

Symbol I/O Description

No

1

BCK

2

LRCK

O

Bit clock output pin.32fs,48fs,or 64fs selectable by command.

O

L/R channel clock output pin."L" for L channel and "H" for R channel. Output polarity
can be inverted by command.

3

AOUT

4

DOUT

5

IPF

O

Audio data output pin. MSB-first or LSB-first selectable by command.

O

Digital data output pin.Outputs up to double-speed playback.

O

Correction flag output pin. When set to "H", AOUT output cannot be corrected by C2

correction processing.
6
7
8
9

10
11
12
13
14
15

V

DD3

V

SS3

SBOK

CLCK

DATA
SFSY
SBSY

HSO

UHSO
PV

DD3

-

Digital 3.3V power supply voltage pin.

-

Digital GND pin.

O

Sub code Q data CRCC result output pin. "H" level when result is OK.

O

Sub code P-W data read I/O pin. I/O polarity selectable by command.

O

Sub code P-W data output pin.

O

Playback frame sync signal output pin.

O

Sub code block sync signal output pin. "H" level at S1 when sub code sync is detected.

I/O

General-purpose input / output pins.
Input port at reset.

-

PLL-only 3.3V power supply voltage pin.

17

161514131211101 2 3 4 5 6 7 8 9

1-42

Pin

Symbol I/O Description

No

16
17

PDO

TMAX

EFM and PLCK phase difference signal output pin.

O

TMAX detection result output pin.

O

KD-LH2000R

TC94A14FA

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
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64

LPFN
LPFO

PVREF

VCOF

AVSS3

SLCO

RFI

AVDD3

RFCT

RFZI

RFRP

FEI

SBAD

TEI
TEZI
FOO
TRO

VREF

RFGC

TEBC

SEL

AVDD3

FMO

DMO
VSS3
VDD3

TESIN

XVSS3

XI

XO

XVDD3

DVSS3R

RO

DVDD3

DVR

LO

DVSS3L

ZDET
VSS5
BUS0
BUS1
BUS2
BUS3
BUCK

/CCE

/RST
VDD5

TMAX Detection Result

Longer than fixed period
Within fixed period
Shorter than fixed period

Inverted input pin for PLL LPF amp.

I

Output pin for PLL LPF amp.

O

PLL-only VREF pin.

­VCO filter pin.

O

Analog GND pin.

­DAC output pin for data slice level generation.

O

RF signal input pin. Zin selectable by command.

I

Analog 3.3V power supply voltage pin.

­RFRP signal center level input pin.

I

RFRP signal zero-cross input pin.

I

RF ripple signal input pin.

I

Focus error signal input pin.

I

Sub-beam adder signal input pin.

I

Tracking error input pin. Inputs when tracking servo is on.

I

Tracking error signal zero-cross input pin.

I

Focus equalizer output pin.

O

Tracking equalizer output pin.

O

Analog reference power supply voltage pin.

­RF amplitude adjustment control signal output pin.

O

Tracking balance control signal output pin.

O

APC circuit ON/OFF signal output pin. At laser on, high impedance with UHS="L",

O

TMAX Output

DD3

"PV

"
"HiZ"
"AV

SS3

"

H output with UHS="H".
Analog 3.3V power supply voltage pin.

­Feed equalizer output pin.

O

Disc equalizer output pin.

O

Digital GND pin.

­Digital 3.3V power supply voltage pin.

­Test input pin. Normally, fixed to "L".

I

System clock oscillator GND pin.

­System clock oscillator input pin.

I

System clock oscillator output pin.

O

System clock oscillator 3.3V power supply voltage pin.

­DA converter GND pin.

­R-channel data forward output pin.

O

DA converter 3.3V power supply pin.

­Reference voltage pin.

­L-channel data forward output pin.

O

DA converter GND pin.

­1 bit DA converter zero detection flag output pin.

O

Microcontroller interface GND pin.

­Microcontroller interface data I/O pins.

I/O

Microcontroller interface clock input pin.

I

Microcontroller interface chip enable signal input pin.At "L", BUS0 to BUS3 are active.

I

Reset signal input pin. At reset, "L".

I

Microcontroller interface 5V power supply pin.

-

1-43

KD-LH2000R

TC94A02F-005 (IC652) : MP3 DEC

AD11

AD12

32

31

33

AD10

CKS

30

TESTP

29

VSSR

28

VRAR

27

RO

26

VDAR

25

24

VDAL

LO

23

VRAL

22

VSSL

21

VSS

20

STANDBY

19

VDD

18

/OE

17

16

/CE

AD9

VDDT

AD8

AD7

AD6

REQ

VSS

AD13

DAC

34

Bus

register

C-Pointer

register

Y-Pointer

register

X-Pointer

Switch

register

35

36

37

General

Output Port

38

39

40

41

Flag

2sets

Address Calc.

ERAM

2k word

*3

CROM

4k word

DAC

AY

AX

MX MY MZ

X0 X1 X2

Y0 Y1 Y2

MAC ALU

A3

A2

A0 A1

round & limit

round & limit

Audio.I/F

15

AD5

14

LRCKI

13

BCKI

12

SDI

AD4

11

AD3

10

9

SDo

87

VDDT

AD14

/WR

AD16

AD15

IO0

IO1

VSS

VSSX

AD2

6

/MICK

543

MIDIo

AD1

AD0

MIMD

2

/RESET

1

42

YRAM

4k word

43

Timer

44

4546

47

48

Interrupt

Control

SRAM I/F

49

IO2

I-Bus

Generator

50

IO3

Timing

51

IO4

XRAM

4k word

52

VDD

53

IO5

X-Bus

Start

Prog.

54

IO6

Y-Bus

DIT

55

IO7

56

VSSP

PRAM

256word

57

PDO

Control

Program

PROM

4k*2+2k

VC0

58

VCOI

=10kword

59

VDDP

40bit

Decoder

Instruction

General Input Port

60

61

CK0

VDDX

Microcom.I/F

62

63

XI

64

XO

1-44

KD-LH2000R

3.Pin function(1/2)
Pin No. Symbol

1

/RESET

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
41
42
43
44
45
46
47
48
49
50

MIMD

AD0

AD1
MIDIO
/MICK

AD2
VDDT

SDO

AD3

AD4

SDI

BCKI

LRCKI

AD5

CE

OE

VDD

STANBY

VSS

VSSL
VRAL

LO

VDAL

VDAR

RO
VRAR
VSSR

TESTP

CKS
AD12
AD11
AD10

AD9

VDDT

AD8

AD7

AD6

REQ

VSS
AD13
AD14

WR
AD16
AD15

IO0

IO1

VSS

IO2

IO3

I/O

O
O

I/O

O
O

O
O

O
O
O

O

O

O
O
O
O

O
O
O
O

O
O
O
O

O
I/O
I/O

I/O
I/O

Function

Hard reset input terminal(H:Normal operation L: Reset)

I

Micon I/F mode select input terminal

I

External SRAM address output 0 terminal
External SRAM address output 1 terminal
Micon I/F data input/output terminal
Micon I/F clock input terminal

I

External SRAM address output 2 terminal
Digital power supply (3.3V)

­Data output terminal

External SRAM address output 3 terminal
External SRAM address output 4 terminal
Data input terminal 0

I

Bit clock input terminal A

I

LR clock input terminal A

I

External SRAM address output 5 terminal
External SRAM chip enable terminal
External SRAM output enable terminal
Digital power supply (2.5V)

­Standby mode control terminal

I

Digital GND

­DAC Lch GND

­DAC Lch reference voltage terminal

­DAC Lch output terminal

DAC Rch power supply terminal(2.5V)

­DAC Lch power supply terminal(2.5V)

­DAC Rch output terminal

DAC Rch reference voltage terminal

­DAC Rch GND

­Test terminal

I

VCO select terminal

I

External SRAM address output 12 terminal
External SRAM address output 11 terminal
External SRAM address output 10 terminal
External SRAM address output 9 terminal
Digital power supply terminal (3.3V)

­External SRAM address output 8 terminal

External SRAM address output 7 terminal
External SRAM address output 6 terminal
Squeeze request terminal to host
Digital GND

­External SRAM address output 13 terminal

External SRAM address output 14 terminal
External SRAM write signal
External SRAM address output 16 terminal
External SRAM address output 15 terminal
External SRAM data input/output 0 terminal
External SRAM data input/output 1 terminal
Digital GND

­External SRAM data input/output 2 terminal

External SRAM data input/output 3 terminal

TC94A02F-005

1-45

KD-LH2000R

3.Pin function(2/2)
Pin No. Symbol

51
52
53
54
55
56
57
58
59
60
61
62
63
64

IO4

VDD

IO5
IO6
IO7

VSSP

PDO

VCOI

VDDP

CKO

VDDX

XI

XO

VSSX

I/O

I/O
I/O

I/O
I/O

O

O

O

Function

External SRAM data input/output 4 terminal
Digital power supply (2.5V) terminal

­External SRAM data input/output 5 terminal
External SRAM data input/output 6 terminal
External SRAM data input/output 7 terminal
VCO GND

­PLL phase error detection signal output terminal
VCO control voltage input terminal

I

VCO power supply

-

16.934 MHz clock output terminal
Power supply (2.5V) terminal for oscillator

­Connection terminal for oscillator(input)

I

Connection terminal for oscillator(output)
GND for oscillator

-

TC94A02F-005

LP61L1024S-12-X (IC653) : SRAM

1. Pin layout

V

NC
A16
A14
A12

I/O1
I/O2
I/O3

Vss

1
2
3
4
5

A7

6

A6

7

A5

8

A4

9

A3

10

A2

11

A1

12

A0

13
14
15
16

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

DD

A15
CS2
WE
A13
A8
A9
A11
OE
A10
CS1
I/O8
I/O7
I/O6
I/O5
I/O4

2. Block diagram

V

DD

Vss

A0

DECODER

A16

CS2
CS1

CONTROL

OE

WE

3. Pin function
SYMBOL

A0 - A16
I/O1 - I/O8
CS1, CS2
WE
OE
V

DD

Vss
NC

CORE

ARRAY

DATA I/O

I/O1

I/O8

DESCRIPTION
Address Input
Data Input/Output
Chip Select Inputs
Write Enable Input
Output Enable Input
Power Supply
Ground
No Connection

1-46

MX23L8103-90 (IC802) : ROM

1.

Pin

layout

48

A15
A14
A13
A12
A11
A10

WE

RESET

RY/BY

A18
A17

NC
NC

NC
NC

1
2
3
4
5
6
7

A9

8

A8

9
10
11
12
13
14
15
16
17
18

A7

19

A6

20

A5

21

A4

22

A3

23

A2

24

A1

A16

47

BYTE

46

GND

45

Q15/A-1

44

Q7

43

Q14

42

Q6

41

Q13

40

Q5

39

Q12

38

Q4

37

VCC

36

Q11

35

Q3

34

Q10

33

Q2

32

Q9

31

Q1

30

Q8

29

Q0

28

OE

27

GND

26

CE
A0

25

2. Block diagram

CE

OE

WE

RESET

A0-A18

CONTROL
INPUT

LOGIC

ADDRESS

LATCH

AND

BUFFER

PROGRAM/ERASE
HIGH VOLTAGE

X-DECODER

MX29LV800T/B

FLASH
ARRAY

Y-DECODER

Y-PASS GATE

SENSE

AMPLIFIER

SOURCE

PGM
DATA

HV

ARRAY

HV

KD-LH2000R

WRITE

STATE

MACHINE

(WSM)

STATE
REGISTER

COMMAND

DATA
DECODER

COMMAND

DATA LATCH

3. Pin function

Pin NO. Name Function

1~8

9, 10

13, 14
16, 17

18~25

11
12

15

26
27
28
29
30
31
32
33

A15~A8

NC
WE

RESET

NC

RY / BY

A18, A17

A7~A0

CE

GND

OE

Q0
Q8
Q1
Q9
Q2

Address input
Write enable input

Hardware reset pin
Ready / busy output

Address input
Address input
Chip enable input
Ground pin
Output enable input
Data input / output
Data input / output
Data input / output
Data input / output
Data input / output

PROGRAM

DATA LATCH

Q0-Q15/A-1

I/O BUFFER

Pin NO. Name Function

34
35
36
37
38
39
40
41
42
43
44

45
46

47
48

Q10

Q3
Q11
VCC

Q4
Q12

Q5
Q13

Q6
Q14

Q7

Q15 / A-1

GND

BYTE

A16

Data input / output
Data input / output
Data input / output
Data input / output
Data input / output
Data input / output
Data input / output
Data input / output
Data input / output
Data input / output
Data input / output

Q15 (Word mode) /
LSB addr (Byte mode)

Ground pin
Word / byte selction input
Address input

1-47

KD-LH2000R

PCM1716E (IC571) : D/A converter

1. Pin layout

2. Block diagram

BCK

LBCK

DATA

ML/llS
MC/DM1
MD/DM0

CS/WO

MODE

MUTE

RST

3. Pin function

Pin

Symbol Function

No.

1

LRCK

2

DATA

3

BCK

4

CLKO
5
6
7
8
9

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

XTI

XTO

DGND

VDD

VDD2R

AGND2R

EXTR

NC
VOUTR
AGND1

Vcc1

VOUTL

NC

EXTL

AGND2L

Vcc2L
ZERO

RST

CS/IWO

MODE

MUTE
MD/DM0
MC/DM1

ML/IIS

28 15

114

Serial

Input

I/F

Mode

Control

I/F

Mult-level

8X Oversampling

Digital Filter

with

Function Controller

SCK

BPZ-Cont

Crystal OSC

XTI XTO CLKO Vcc1 VccAGND1 DGND

Delta-Sigma

Modulator

Power Supply

Vcc2L

DAC

DAC

AGND2L

Vcc2R

AGND2R

Open drain

Low-pass

Filter

Low-pass

Filter

I/O

I

LRCK clock input

I

Serial audio data input

I

Bit clock input for serial audio data

O

Buffered output of system clock

I

Oscillator input / External clock input

O

Oscillator output

-

Digital ground

-

Digital power +5V

-

Analog power +5V

-

Analog ground

O

Rch common pin of analog output amp

-

Non connection

O

Rch analog voltage output of audio signal

-

Analog ground

-

Analog power +5V

O

Lch analog voltage output of audio signal

-

Non connection

O

Lch common pin of analog output amp

-

Analog ground

-

Analog power +5V

O

Zero data flag

I

Reset

I

Chip select / Input format selection

I

Mode control select

I

Mute control

I

Mode control, Data / De-emphasis selection 1

I

Mode control, BCK / De-emphasis selection 2

I

Mode control, WDCK / Input format selection

VoutL

EXTL

VoutR

EXTR

ZERO

1-48

NJM2360M (IC921) : DC-DC convertor

1.

Pin

layout

2. Block diagram

KD-LH2000R

1. Cs

1
2
3
4

8
7
6
5

2. Es

T

3. C

4. GND

5. INV

6. Vcc

7. S

I

8. C

D

IN

HN58X2432FPI (IC703) : EEPROM

1.Terminal layout

Switch
collector

Switch
emitter

Timing
capacitor

GND

2.Pin function

1

Q

1

QS

Q

2

R

2

Ipk

COSC

T

3

COMP

V

REF

4

1.25V

+

-

Driver

8

collector

Ipk sense

7

+

6

V

Comparator

5

reversal input

A0
A1
A2

GND

1
2
3
4

3.Block diagram

A0, A1, A2

V

CC

V

SS

WP

SCL

SDA

8

VDD

7

WPIN

6

SCL
SDA

5

Control

logic

Pin name
A0 to A2
SCL Serial clock
SDA Serial data
WPIN
VDD
CND

Address generator

Device address

Write protect
Power supply
Ground

High voltage generator

X decoderY decoder

Y-serect & Sense amp.

Function

input

input/output

Memory array

Serial-parallel converter

1-49

KD-LH2000R

SAA6579T-X(IC51):RDS detecter

1.Pin layout

QUAL

SCOUT

2.Block diagram

DATA

Vref

MUX

GND

CIN

1
2
3
4

dd

V

5
6
7
8

16
15
14
13
12
11
10

CLK
T57
OSCO
OSCI
V

dd

GND
TEST
MODE

9

121413

3.Pin function

4

8

7

CLOCKED
COMPARATOR

5

3

REFERENCE
VOLT AGE

Pin No.

1
2
3
4

ANTI­ALIASING
FILTER

6 11

Symbol

VP1

QUAL
DATA
Vref
MUX

57 kHz
BAND PASS
(8th ORDER)

COSTAS LOOP
VARIABLE AND
FIXED DIVIDER

CLOCK
REGERATION
AND SYNC

RECONSTRUCTION
FILTER

TEST LOGIC AND OUTPUT
SELECTOR SWITCH

OSCILLATOR
AND
DIVIDER

BIPHASE
SYMBOL
DECODER

910

Description

Quality indication output
RDS data output
Reference voltage output (0.5VDDA)
Multiolex signal input

QUALITY BIT
GENERATOR

DIFFERENTIAL
DECODER

1

2

15

15

1-50

5
6
7
8

9
10
11
12
13
14
15
16

Vdd
GND
CIN
SCOUT
MODE
TEST
GND
Vdd
OSCI
OSCO
T57
CLK

+5V supply voltage for analog part
Ground for analog part (0V)
Sub carrier input to comparator
Sub carrier output of reconstruction filter
Oscillator mode / test control input
Test enable input
Ground for digital part (0V)
+5V supply voltage for digital part
Oscillator input
Oscillator output
57 kHz clock signal output
RDS clock output

RPM6938-SV4 (IC805) : Remote sensor

1.Block diagram

KD-LH2000R

AGC

AMP

I/V
conversion

PD

magnetic shield

BPF

fo
trimming
circuit

Detector

NJU7241F25 (IC651) : Regulator

1.Pin layout 2.Block diagram

GND 1

VIN 2

5 STB

VIN 2

Vcc

Comp

Vcc

22k

Rout

GND

Short protect

3 VOUT

VOUT 3

4 NC

STB 5

GND 1

NJM4565V (IC132,IC151,IC251,IC572) : Dual ope amp

1.Terminal layout & Pin function

1

1

8

A

2

+

-

7

B

3

+

-

4

6

5

AOUTPUT

2

A-INPUT

3

A+INPUT

4

V

5

B+INPUT

6

B-INPUT

7

B OUTPUT

8

V

Vref

1 GND

1-51

KD-LH2000R

VICTOR COMPANY OF JAPAN, LIMITED

MOBILE ELECTRONICS DIVISION
PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

(No.49753)

200206