JVC KW-XC828 Service Manual

SERVICE MANUAL

CD/CASSETTE RECEIVER

KW-XC828

KW-XC828

SOUND

ATT

U

SOURCE

F

R

D

VOL

VOL

Contents

Safety precaution
Disassembly method
Adjustment method
Flow of functional
operation unit TOC read

1-2
1-3
1-30

1-31

DIRECTORY

E

X

Area Suffix

U Ather Areas

Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs

1-33
1-33
1-36

COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.

No.49729

Apr. 2002

KW-XC828

Safety precaution

CAUTION

!

CAUTION

!

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

KW-XC828

Disassembly method

Removing the front panel assembly

(See Fig.1 ~ 3)

1.

Remove the four screws A on both sides of the
body.

2.

Release four joints a on both sides of the body using
a screwdriver and remove the front panel assembly
toward the front. The connector which connects the
front panel assembly with the rear section comes off.

CAUTION:

When reassembling, make sure that
connector CN501 on the front panel
assembly is securely connected to
CN701 on the main board (See Fig.3).

Joint a

A

A

Joint a

Front panel assembly

Fig.1

Joint a

A

CN501

A

Joint a

Front panel assembly

Fig.2

Front panel assembly

CN701

Fig.3

1-3

KW-XC828

Removing the system control board /
switch board (See Fig.4 , 5)

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

1.

Remove the twelve screws B retaining the system
control board.

2.

Remove the five screws C retaining the switch
board.

3.

Unsolder WR501 and WR502 of the wires
connecting the system control board with the switch
board.

B

B

WR502

System control board

WR502

B

Switch board

Fig.4

B

B

WR501

WR502

System control board

CC

Switch board

Fig.5

WR501

1-4

KW-XC828

Removing the CD player section /
cassette player section (See Fig.6 ~ 10)

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

1.

Remove the ten screws D, the screw E and F
attaching the rear panel on the back of the body.

2.

Remove the three screws G and the two screws H
attaching the heat sink on the left side.

3.

Remove the three screws I attaching the CD player
section and the cassette player section on the both
sides of the body.

4.

Disconnect the card wire from connector CN702 on
the main board in the CD player section on the back
of the body.

5.

Remove the CD player section upward.

CAUTION:

When reassembling, joint the CD player
section and the cassette player section
at four joints b.

D

G

Rear panel

Heat sink

H

E

Fig.6

Fig.7

D

F

D

G

I

CD player section

CN702

I

CD player section

I

Fig.8

Joint b

Joint b

Joint b

Cassette player section

Cassette player section

Fig.10Fig.9

1-5

KW-XC828

<CD player section>

Prior to performing the following procedure, remove
the front panel assembly, the CD player section and
the cassette player section.

Removing the main board (See Fig.11)

1.

Remove the three screws J attaching the main
board. The connector CN601 on the main board is
disconnected from the CD mechanism control board.

CAUTION:

When reassembling, securely connect
connector CN601 on the main board to
the connector on the CD mechanism
control board.

Removing the MP3 board

(See Fig.12)

Prior to performing the following procedure, remove
the main board.

J

J

MP3 board

Main board

CN601

J

Fig.11

K

1.

Disconnect the wire from connector CN601on the
MP3 board.

2.

Remove the five screws K and the MP3 board,
releasing the joint c and d.

Removing the CD mechanism assembly

(See Fig.13)

Prior to performing the following procedure, remove
the main board and MP3 board.

1.

Remove the three screws L attaching the CD
mechanism assembly.

Joint c

CN601

Joint d

K

Fig.12

L

1-6

L

CD mechanism assembly

Fig.13

L

KW-XC828

<Cassette player section>

Prior to performing the following procedures, remove
the front panel assembly, the CD player section and
the cassette player section.

Removing the main board (See Fig.14)

1.

Disconnect the card wire from connector CN972 on
the main board.

2.

Remove the two screws M attaching the main
board.

Removing the cassette mechanism
assembly (See Fig.14 , 15)

Prior to performing the following procedure, remove
the main board.

N

M

CN972

Cassette mechanism assembly

Fig.14

Bottom cover

Main board

M

N

1.

Disconnect the card wire from connector CN972 on
the main board.

2.

Remove the four screws N from the bottom cover of
the cassette player section.

Removing the connector board

(See Fig.16)

Prior to performing the following procedure,
remove the cassette mechanism assembly.

1.

Remove the screw O and move the connector
board in the direction of the arrow to release the
two joints e.

2.

Disconnect the wire from connector CJ402 and
the card wire from CN403 on the connector
board respectively.

CJ402

Fig.15

O

Fig.16

Connector board

Joint e

CN403

1-7

KW-XC828

< 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

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

1-8

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

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

KW-XC828

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

Suspension spring (R)

Suspension spring (L)

Shafts

Damper

Damper

Damper

Frame

Fig.8Fig.7

1-9

KW-XC828

Removing the clamper assembly

(See Fig.9 and 10)

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

1-10

Loading / feed motor assembly

Fig.12Fig.11

KW-XC828

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

Pickup unit

Feed rack

Joint f

Feed sw. holder

Fig.17Fig.16

1-11

KW-XC828

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.

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.

1-12

H

Top plate assembly

Joints p

q

Fig.20

KW-XC828

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'

Joint r

Fig.25Fig.24

Joint s

Select
lock arm

Point x

1-13

KW-XC828

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

1-14

Link plate

Fig.26

KW-XC828

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

Frame

Loading roller

Roller guide spring

Lock arm rivet assembly

Joint f'

Part g'

Fig.29Fig.30

1-15

KW-XC828

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

1-16

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.

KW-XC828

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

1-17

KW-XC828

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

1-18

Spindle motor

Fig.38

KW-XC828

REFERENCE:

Prior to performing the following
procedures, turn the mode gear on the
bottom of the body until the respective part
comes to the EJECT position (Refer to
Fig.1).

Removing the cassette guide (See Fig.2)

1.

Turn the mode gear to set to RVS play or
subsequent mode.

2.

Remove the cassette guide from the main chassis
while releasing each two joint tabs a in the direction
of the arrow.

Mode gear

Fig.1

Cassette guide

Removing the load arm (See Fig.3)

1.

Remove the E-washer attaching the load arm.

2.

Move the load arm in the direction of the arrow and
release the joint b on the cassette catch.

Load arm

E-washer

Tab a

Joint b

Tab a

Fig.2

Fig.3

1-19

KW-XC828

Removing the cassette hanger assembly /
cassette holder (See Fig.4 to 7)

1.

Check the mode is set to EJECT. Push down the
front part of the cassette holder and move in the
direction of the arrow to release the joint c.

2.

Move the rear part of the cassette hanger assembly
in the direction of the arrow to release it from the two
joint bosses d.

3.

Release the holder stabilizer spring from the hooks e
and f, then pull out from the cassette hanger
assembly.

4.

Bring up the rear side of the cassette hanger
assembly to release the joint g and h.

5.

Pull out the cassette catch from the cassette hanger
assembly.

Cassette holder assembly

Side bracket

Joints c

Cassette holder assembly

Cassette stabilizer spring

Fig.4

Boss d

Cassette hanger assembly

Cassette hanger
assembly

Boss d

Cassette holder
assembly

Hook g

Fig.6

Hook f

Hook e

Fig.5

Cassette hanger assembly

Cassette catch

Cassette holder assembly

Cassette hanger assembly

Hook h

Fig.7

1-20

KW-XC828

Removing the side bracket assembly

(See Fig.8 to 10)

1.

Remove the screw A attaching the side bracket
assembly.

2.

Detach the front side of the side bracket assembly
upward and pull out forward to release the joint i and
j in the rear.

CAUTION:

CAUTION:

When reassembling, make sure that the
boss k of the main chassis is set in the
notch of the load rack under the side
bracket assembly. Do not reattach the
load rack on the boss k.

After reattaching the side bracket
assembly, confirm operation.

Side bracket assembly

Joint i

Joint j

A

Side bracket assembly

Fig.8

Side bracket assembly

Joint i

Joint j

Load rack

Load rack

Boss k

Boss k

Fig.9

Fig.10

1-21

KW-XC828

Removing the pinch arm (F) assembly

(See Fig.11 and 12)

1.

Remove the polywasher and pull out the pinch arm
(F) assembly.

2.

Remove the compulsion spring.

Removing the pinch arm (R) assembly

(See Fig.11 and 13)

1.

Remove the polywasher and pull out the pinch arm
(R) assembly.

Removing the slide chassis assembly

(See Fig.14 and 15)

Polywasher

Pinch arm
(R) assembly

Polywasher

Compulsion spring

Fig.11

Pinch arm
(F) assembly

Pinch arm (F) assembly

Polywasher

REFERENCE:

It is not necessary to remove the head
and the tape guide.

1.

Move the slide chassis assembly in the direction of
the arrow to release the two joints l and remove from
the main chassis.

2.

Remove the rack link.

CAUTION:

When reassembling, first reattach the rack
link, and next fit the boss m and hook n of
the slide chassis assembly to the hole of
the main chassis, and engage the two joints
l.

Rack link

Fig.12

Boss m

Pinch arm
(R) assembly

Fig.13

Head

Hook n

Polywasher

Tape guide

Joint l

Slide chassis assembly

1-22

Fig.14

Joint l

Fig.15

KW-XC828

Removing the head / tape guide

(See Fig.16 and 17)

REFERENCE:

1.

Remove the band attaching the wire to the head.

2.

Remove the two screws B, the head and the head
support spring.

3.

Remove the pinch arm spring from the tape guide.

4.

Remove the tape guide and the pinch spring arm.

CAUTION:

CAUTION:

It is not necessary to remove the slide
chassis assembly.

When reattaching the pinch arm spring, set
both end of it to the pinch spring arm (
remarked o).

When reattaching the head, set the wires
into the groove of the tape guide (Fig.16).

B

Slide chassis assembly

Head

Tape guide

Fig.16

B

Pinch arm spring

Head

Head support spring

Tape guide

Removing the flywheel assembly (F) & (R)

(See Fig.18 and 19)

REFERENCE:

1.

Remove the belt at the bottom.

2.

Remove the two polywashers on the upper side.

3.

Pull out each flywheel assembly downward.

Flywheel assembly (F)

It is not necessary to remove the slide
chassis assembly.

Belt

o

Pinch spring arm

o

Slid chassis assembly

Fig.17

Polywasher

Polywasher

Flywheel assembly (R)

Fig.18

Flywheel assembly (F)

Fig.19

Flywheel assembly (R)

1-23

KW-XC828

Disassembling the flywheel assembly (F)

(See Fig.20 and 21)

1.

Push and turn counterclockwise the spring holder (F)
to release the three joints p on the bottom of the
flywheel.

2.

The spring holder (F), the TU spring and the friction
gear play come off.

3.

Remove the polywasher and felt.

Flywheel assembly (F)

Joints p

Flywheel assembly (R)

Joints q

Disassembling the flywheel assembly (R)

(See Fig.20 and 22)

1.

Push and turn clockwise the spring holder (R) to
release the three joints q on the bottom of the
flywheel.

2.

The spring holder (R), the FF spring and the friction
gear FF come off.

3.

Remove the polywasher and the felt.

Removing the reel board

(See Fig.23 and 24)

1.

Remove the two screws C attaching the reel board.

2.

Move the reel board in the direction of the arrow to
release the joint r.

3.

Unsolder the wires if necessary.

CAUTION:

When reattaching, confirm operation of
the MODE switch and the ST-BY switch.

The mode position between EJECT and
ST-BY is optimum for reattaching.

Joint p

Fig.20

Polywasher

Polywasher

Spring holder (R)

Spring holder (F)

TU spring

Friction gear FF

Friction gear play

Felt

Flywheel assembly (F)

FF spring

Felt

Flywheel assembly (R)

Fig.21 Fig.22

Joint q

1-24

Connect the card wire extending from
the reel board to the FFC pad before
reattaching the reel board.

FFC pad

C

Reel board

C

Fig.23

Joint r

FFC pad

CT-1 switch

MODE switch

Soldering

ST-BY switch

Fig.24

KW-XC828

Removing the gear base arm / gear base
link assembly (See Fig.25 to 27)

1.

Move the gear base arm in the direction of the arrow.

2.

Insert a slotted screwdriver to the gear base spring
under the gear base arm, and release the gear base
arm upward from the boss on the gear base
assembly.

3.

Remove the gear base arm from the main chassis
while releasing the two joints s.

4.

Move the gear base link assemby in the direction of
the arrow to release the two joints t.

REFERENCE:

When reattaching the gear base arm,
make sure that the boss on the gear
base assembly is inside the gear base
spring.

Removing the FFC pad

(See Fig.27 and 29)

Gear base
link assembly

Gear base spring

Joint t

Gear base arm

Joints s

Hook u

FFC pad

Hook u

Joint t

Fig.25

Gear base arm

Screwdriver

1.

Push each joint hook u of the FFC pad and remove
toward the bottom.

Gear base link assembly

Fig.26

Gear base arm

Fig.27

FFC pad

1-25

KW-XC828

Removing the mode gear

(See Fig.28 and 31)

1.

Remove the polywasher on the bottom and pull out
the mode gear.

Removing the mode switch actuator

(See Fig.28, 29 and 31)

1.

Pull out the mode switch actuator at the bottom.

REFERENCE:

When reattaching the mode switch
actuator to the main chassis, make sure to
set on the shaft and insert v into the slot w.

Removing the direction link / direction
plate (See Fig.29 to 31)

1.

Remove the polywasher attaching the direction link.

2.

Bring up the direction link to release the three joints
x, y and z at a time.

3.

Move the direction plate in the direction of the arrow
to release the two joints a’.

REFERENCE:

When reattaching the direction plate,
engage the two joints a’ and move in the
direction of the arrow (Refer to Fig.30).

Mode switch actuator

Direction plate

Direction link

Fig.28

Direction plate

Joints a'

Joint z

Direction link

Slot w

Joint y

Polywasher

Fig.29

Direction plate Mode rack assembly

Joint b'

Mode gear

Polywasher

Mode rack assembly

Joint x

Joint b'

Joint c'

REFERENCE:

When reattaching the direction link,
move the direction plate in the direction
of the arrow and engage the three joint

x, y and z at a time (Refer to Fig.31).

Removing the mode rack assembly

(See Fig.29 and 30)

1.

Move the mode rack assembly in the direction of the
arrow to release the two joints b’ and the joint c’.

REFERENCE:

When reattaching, set the two b’ on the
bottom of the mode rack assembly into the
slots of the main chassis and move in the
direction of the arrow (See Fig.30).

Joints a'

Fig.30

Direction link

Mode switch actuator

Polywasher

v

Mode gear

Direction plate

Mode rack assembly

Fig.31

1-26

KW-XC828

Removing the gear base assembly / take
up gear / reflector gear (See Fig.32 to 34)

1.

Push in the pin d’ of the gear base assembly on the
upper side of the body and move the reflector gear
toward the bottom, then pull out.

2.

Remove the polywasher on the bottom and pull out
the take up gear.

3.

Move the gear base assembly in the direction of the
arrow to release it from the two slots e’ of the main
chassis.

REFERENCE:

The parts are damaged when removed.
Please replace with new ones.

Gear base assembly

Pin d'

Polywasher

Slot e'

Slot e'

Fig.32

Take up gear

Removing the reel driver / reel spindle

(See Fig.34)

1.

Draw out the reel driver from the shaft on the main
chassis and remove the reel driver spring and the
reel spindle respectively.

CAUTION:

The reel driver is damaged when
removed. Please replace with a new
one.

Reflector gear

Reel driver

Reel driver spring

Reel spindle

Main chassis

Fig.33

Reel driver

Reel driver spring

Reel spindle

Gear base assembly

Slots e’

Take up gear

Reflector gear

Polywasher

Fig.34

1-27

KW-XC828

Removing the side bracket assembly

(See Fig.35 to 39)

1.

Remove the eject cam plate spring.

2.

Push the joint f‘ through the slot to remove the load
rack downward.

3.

Move the eject cam limiter in the direction of the
arrow to release it from the boss g’ of the side
bracket assembly and from the two joints h’.

4.

Move the eject cam plate in the direction of the arrow
to release the joint i’.

Joint f'

CAUTION:

Joint h'

When reassembling, confirm operation of
each part before reattaching the eject cam
plate spring.

Side bracket assembly

Boss g'

Eject cam limiter

Side bracket assembly

Joint h'

Joint f'

Eject cam plate spring

Joint h'

Load rack

Fig.35

Boss g'

Eject cam limiter

Eject cam plate

Fig.37

Joint h'

1-28

Fig.36

Side bracket assembly

Boss g'

Eject cam plate

Fig.38

Load rack

Joint i'

Side bracket assembly

Eject cam plate

Joint i'

Fig.39

KW-XC828

Removing the main motor assembly /
sub motor assembly (See Fig.40 to 42)

1.

Remove the belt at the bottom.

2.

Remove the polywasher and pull out the mode gear.

3.

Pull out the reduction gear (B).

4.

Remove the polywasher and pull out the reduction
gear (A).

5.

Remove the two screws D attaching the main motor
assembly.

6.

Remove the two screws E attaching the sub motor
assembly.

7.

Unsolder the wires on the reel board if necessary.

CAUTION:

When reassembling, adjust the length of the
wires extending from the sub motor
asswmbly by attaching them to the side of
the sub motor assembly with the wires
extending from the main motor assembly
using a spacer.

Belt

Reduction gear (B)

Reduction gear (B)

E

Polywasher

Fig.40

D

E

Mode gear

Polywasher

Reduction gear (A)

D

Main motor
assembly

Reduction
gear (A)

Polywasher

Sub motor
assembly

Spacer

Main motor assembly

Sub motor assembly

Main motor assembly

Sub motor assembly

Fig.41

Spacer

Fig.42

1-29

KW-XC828

Adjustment method

Test Instruments required for adjustment

1.

Digital osclloscope(100Mz)

2.

Frequency Counter meter

3.

Electric voltmeter

4.

Wow&flutter meter

5.

Test tapes VT739..For playback frequency
measurement

VT712..For wow flutter&
tape speed measurement

VT703..For head azimuth measurement

6.

Torque gauge Cassette

for CTG-N(mechanism adjustment

7.

Laser power meter(Reader:LP800102)

8.

Prove for MD (Reader:LP8010-02)

9.

Pre masterd disc (TGYS-1)

10.

Test disc (JVC:CTS1000)

Measuring conditions (amplifier section)

Power supply voltage ..... DC14.4V(11V to 16V allowance )

Load impedance..... 4 ohm (4 ohm to 8 ohm allowance)

Line out .... 2.0V

Method of connecting extension cable
adjustment

Jig list: EXTSH002-22P x 1pc

Frequency Range:
FM: 87.5MHz to 108.0MHz
AM: 531 kHz to 1602kHz

Cassette mechanism

CN601

Extension cables

EXTSH002-22P

CN501

Main P.W.B

1-30

CD mechanism

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

KW-XC828

When the laser diode correctly

emits

Microprocessor
commands

FMO
TC94A14FA" 40"

FEED MOTOR
+TERMINAL
IC561"4"

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
CN501"15"

"No disc"
display

When the disc correctly rotates

Microprocessor
commands

DMO
TC94A14FA"41"

Spindle
motor(-)
IC561"1"

$84 $86 $ A200

Acceleration Servo CLV

Rough
Servo

0.5 Sec 0.5 Sec

$84

3.3V
0V

4V
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)

1-31

KW-XC828

Feed section

Is the voltage output at
IC521 pin "40" 5V or 0V?

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

YES

YES

NO YES NO

NO

Is the wiring for IC521

(56)~(64) correct?

NO

Is 6V or 2V present at

IC561 "4" and "5"?

NO

Is 3.3V present at IC561

pin "20"?

Check the vicinity of

IC521.

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

IC561 pins "8" and "9"?

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 IC561.

NO

YES

NO

NO

NO

Check the circuits in
the vicinity of IC561
pins "8","9"and"15".

Check the pickup and

its connections

Is 4V present at IC561

pins "6" and "7"?

Check the spindle motor

and its wiring

Check the circuits in the

vicinity of IC501 "19"~

"24" or the pickup

YES

YES

NO

Is 4V present at IC521

pins "41" ?

Check the vicinity of

IC561.

NO

YES

Check IC521 and

IC501.

Tracking section

1-32

When the disc is rotated

at first:

Approx. 1.2V

Is the tracking error signal

output at IC501 "11"?

YES

Check IC521.

YES YES

Check the circuit in the

vicinity of IC501 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.

KW-XC828

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.

1-33

KW-XC828

Mechanism Adjustment Section

Item

1.Head azimuth

Adjusting & Confirmation Methods

"Head Height Adjustment"
Note
Adjust the azimuth directly. When you adjust the height using a
mirror tape, remove the cassette housing from the mechanism
chassis. After installing the cassette housing, perform the azimuth
adjustment.

1. load the mirror tape (SCC-1659). Adjust with height adjustment
screw A and azimuth adjustment screw B so that line "A" of
the mirror tape runs in the center between Lch and Rch in the
reverse play mode.

2. After switching from REV to FWD then to REV, check that the
head position set in procedure "1" is not changed.
*If the position has shifted, adjust again and check.

3. Adjust the azimuth screw B so that line "B" of the mirror tape
runs in the center between Lch and Rch in the forward play
mode.

"Head Azimuth Adjustment"

1. Load the test tape (VT724: 1kHz) and play it back in the
reverse play mode. set the Rch output level to maximum.

2. Load the test tape (VT703: 10kHz) and play it back in the
forward play mode. Adjust the Rch and Lch output levels to
maximum, with azimuth adjustment screw B .
In this case, the phase difference should be within 45 .

3. Engage the reverse mode and adjust the output level to
maximum, with azimuth adjustment screw C .

4. When switching between forward and reverse modes, the
difference between channels should be within 3dB.
*Between FWD Lch and Rch, REV Lch and Rch.

5. When the test tape (VT721 (315Hz )) is played back, the level
difference between channels should be within 1.5dB.

Std. V alueAdjust

Head shield

The head is at low position
during FWD.

Head shield
The head is at height position

during REV.

FWD adj.

B

REV adj.

C

0

Playback head

Height adj.

Phase

A

45

2. Tape Speed
and
Wow & Flutter

3. DOLBY NR
level adjustment

1-34

1. Check to see if the reading of the frequency counter & Wow
flutter meter is within 3015-3045 Hz (FWD/REV), and less than

0.35% (JIS RMS).

2. In case of out of specification, adjust the motor with a built-in
volume resistor.

1. Play the test tape (VT724 : 1kHz) back.

2. Adjust the VR191 (Lch) and VR291 (Rch) so that the DOLBY NR
level is 27.5mV 0.5dB by TP191 (Lch), TP291 (Rch).

Built-in
volume resistor

VR191:Lch
VR291: Rch

Tape Speed
3015-3045Hz
Wow & Flutter

Less than

0.35%
(JIS RMS)

Speaker out
1kHz/10kHz
: -1dB 3dB,
63Hz/1kHz
: 0dB 3dB,

Arrangement of adjusting & test points

Cassette mechanism
(Surface)

Azimuth screw (Reverse side)

Head amplifier board

DOLBY NR Level Adj.

Lch : VR401

Playback head

DOLBY NR Level Adj.

Rch : VR402

KW-XC828

Azimuth screw
(Forward side)

Capstan motor

Tape speed adjust

DOLBY NR Level Adj.

Lch : VR401

DOLBY NR Level Adj.

Rch : VR402

Head amplifier board

1-35

KW-XC828

Description of major ICs

BR24C01AFV-W-X (IC502) : EEPROM

1.Pin layout

2.Block diagram

A0

1

A1

2

A2

3

VDD WPIN SCL SDA

A0 A1 A2 GND

1kbit EEPROM ARRAY

7bit

ADDRESS
DECODER

CONTROL LOGIC

SLAVE/WORD

7bit

ADDRESS REGISTER

START

STOP

ACK

8bit

DATA
REGISTER

8

7

6

VDD

WPIN

SCL

GND

4

HIGH VOLTAGE GEN.

3.Pin function

Pin name I/O

VDD

GND

A0,A1,A2

SCL

SDA

WPIN

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

-

­IN
IN

IN / OUT

IN

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

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

Write protect input

Vcc LEVEL DETECT

Function

SDA

5

1-36

CXA2560Q (IC401) : Dolb y B type noise reduction system with play back equalizer amp.

1.Pin layout & block diagram

KW-XC828

31

PBFB2

32

PBRIN2

33

PBGND

34

PBFIN2

35

VCT

45k

36

PBREF

37

PBFIN1

38

PBGND

39

PBRIN1

40

PBFB1

2. Pin function
Pin No. Symbol

1

2

3
4
5
6
7
8
9

10

11
12
13

14
15
16
17
18

19
20
21
22
23
24

PBTC1

PBOUT1

OUTREF1

TAPEIN1

Vcc

NC

OUT1

TCH1

NC

MSLPF

G2FB
G1FB

MSTC

MSOUT

NC

NRSW

MUTE

METAL

DRSW

DIRECTION

FF/REW

NC

TCH2

OUT2

PBTC2

30 29 28

7k/12k

12345

PBTC1

300k

30k

30k

300k

7k/12k

F2

F1

PBOUT2

­+

+

-

PBOUT1

OUTREF2

27

70 /120

1

1

70 /120

OUTREF1

TAPEIN2

100k

100k

TAPEIN1

GND

26

T2

T1

Vcc

I/O Function

Playback equalizer amplifier

­capacitance

Playback equalizer amplifier

O

output
Output reference

O

TAPE input

I

Power supply

-

­Line output

O

Time constant for the HLS

-

­Cut-off frequency adjustment

­of the music sensor LPF

Music signal interval detection

­Music signal interval detection

­Time constant for detecting

­music signal interval

Music sensor out

O

No use

­Dolby NR control

I

Mute function control

I

Playback equalizer amplifier

I

control
Head select control

I

Music sensor mode control

I

Music sensor control

I

­Time constant for the HLS

­Line output

O

25

FWD/RVS

LPF

6

DIREF

+

BIAS

MUTE

TAPE EQ

Vcc

+

-

NC

TCH2

OUT2

23 22 21

24

NR

OFF/B

-

F3

OFF/B

-

+

NR

8910

7

TCH1

OUT1

NC

MS MODE

NR MODE

MS ON/

OFF

DET

NC

MSSW

MSLPF

20

FF/REW

DIRECTION

19

METAL

18

MUTE

17

NRSW

16

NC

15

MSOUT

14

MSTC

13

G1FB

12

G2FB

11

Pin No. Symbol

25

26
27
28
29

30

31

32

33

34

35
36

37

38

39

40

DIREF

GND

TAPEIN2

OUTREF2

PBOUT2

PBTC2

PBFB2

PBRIN2

PBGND

PBFIN2

VCT

PBREF

PBFIN1

PBGND

PBRIN1

PBFB1

I/O Function

-

Resistance for setting the
reference

-

Ground

I

TAPE input

O

Output reference

O

Playback equalizer amplifier
output

-

Playback equalizer amplifier
capacitance

I

Playback equalizer amplifier
feedback

I

Playback equalizer amplifier
input

-

Playback equalizer amplifier
ground

I

Playback equalizer amplifier
input

O

Center

O

Playback equalizer amplifier
reference

I

Playback equalizer amplifier
input

-

Playback equalizer amplifier
ground

I

Playback equalizer amplifier
input

I

Playback equalizer amplifier
feedback

1-37

KW-XC828

UPD784215AGC173 (IC701) : Main micon

1.Pin layout
100 ~ 76

1

75

~

25

26 ~ 50

2.Pin functions(1/2)

Pin No.

1
2

3~7

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

Symbol

NC
NC
NC

MUTE

VDD

X2
X1

GND

XT2
XT1

RESET

BUS INT

REMOCON

ACC DET

MEMORY DET

NC

CST P.REQ

CD P.REQ

AVDD

AVREF0

KEY0
KEY1
KEY2
KEY3

S.METER

LEVEL/ANA

TEMP

NC

AVSS

DIMMER IN

DIMMER OUT

AVREF1

BUS-SI

BUS-SO

BUS-SCK

BUS-I/O

LCD-DA

LCD-SCK

LCD-CE

~

51

I/O

Function

O

Non connect

O

Non connect

O

Non connect

O

Mute output terminal("L" output at mute)

-

Connects with VDD

-

Connects with X'tal departure pendulum of 12.5MHz(output )(main)

-

Connects with X'tal departure pendulum of 12.5MHz(input )(main)

-

Connect with GND

-

Connects with X'tal departure pendulum of 32.768KHz(output)

-

Connects with X'tal departure pendulum of 32.768KHz(input)

I

System reset input terminal

I

Interrupt signal detection terminal from J-BUS communication

I

Interrupt signal detection terminal from optical remote control

I

ACC power supply detection terminal("L" become a holding mode
because of the input)

I

Backup power supply detection terminal
("L" it when backup power supply is input)
("H" input when backup power supply uninputs)

O

Non connect

I

Cassette mechanism power supply start-up demand signal input

I

CD mechanism power supply start-up demand signal input

-

(Connect witj VDD)(Power supply for the A/D converter)

-

(Connect with VDD)(Standard power supply for the A/D converter)

I

KEY0 input terminal

I

KEY1 input terminal

I

KEY2 input terminal

I

KEY3 input terminal

I

Terminal of input of voltage of S meter(Electric field strength)

I

Level input terminal of level meter

I

Voltage input terminal (Use to correct the temperature of the contrast)
from the thermally sensitive resister.

I

To GND with 47k

-

(Connect with GND)(GND for the A/D converter and the D/A converter)

I

Dimmer signal input terminal("L" input at dimmer)

O

"H" output at DIMMER ON

-

(Connect with VDD)(Standard power supply for the D/A converter)

I

Input of data J-BUS communication

O

Output of data of J-BUS communication

I/O

Clock output for J-BUS communication

O

Output of I/O switch signal of J-BUS communication
(output "H" and input "L")

O

data output terminal to LCD driver

O

Clock output terminal for communication to LCD driver

O

Chip enable output terminal to LCD driver

1-38

KW-XC828

2.Pin functions(2/2)

Pin No.

44~47

48
49
50
51
52
53
54
55

56~60

61
62
63
64
65

66~71

72

73~79

80
81
82
83

84
85
86
87
88
89
90
91
92
93

94

95~100

EPROM DI
EPROM DO
EPROM CK

SD/SI

PLL CE

PLLDATA

PLL CLK

PLL DI

E.VOL SO

E.VOL SCK

LCD RESET

TEL MUTE

GND

POWER ON

VDD

CD MUTE

CD RESET

AREA SET1
AREA SET2

LCD TEST

CST MUTE

CST RESET

TEST

NC

NC
NC

NC

NC

NC
NC

NC

NC
NC

NC

UPD784215AGC173(2/2)

I/O

FunctionSymbol

O

Non connect

O

Data input from EPROM

O

Data output to EPROM

O

EPROM Clock signal I/O

I

Stationdetector and stereo signal input terminal ("H" input at SD)

O

Chip enable output terminal to PLL

O

Data output terminal to PLL

O

Clock output terminal for communication to PLL

I

Data input terminal from PLL

O

Non connect

O

Non connect

I/O

Data I/O terminal to electric volume

I/O

Clock I/O terminal for communication to electric volume

O

Reset signal output terminalto LCD driver("L" output when resetting)

I

Outputs by "L" input the mute output terminal "L"

O

Non connect

-

(Connect with GND)

O

Non connect

O

Power is output " H" when it is on

-

(Connect with VDD)

I

Mute signal demand input terminal from CD mechanism

O

When the terminal RESET detects "L", 200mS "H"

O

(CD mechanism) (Reset output terminal is output)
Non connect

O

Non connect

I

Area setting of tuner 1

I

Area setting of tuner 2

O

Non connect

I

All lighring display of LCD by "L" input

O

Non connect

O

Non connect

I

Mute signal demandinput terminal from cassette mechanism

O

Reset output terminal to cassette mechanism

-

(When the terminal RESET detects "L", 200mS "H" is output)
GND and connects with 10k

O

Non connect

1-39

KW-XC828

UPD784225GK-623 (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

I41

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

Systemreset 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

1-40

UPD789166GB-590 (IC431) : CPU

1.Pin layout

44 ~ 34

1

KW-XC828

33

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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

~

11

12 ~ 22

Symbol

KEY0
KEY1
KEY2

KEY SEL

DOLBY SEL

RPT SEL

B.SKIP

NC

AVSS

NC

BUS-I/O
BUS-INT
TAPE IN

MAIN POWER

PWR_DET

BUS-SCK

VDD1

BUS-SO

BUS-SI

METAL IN

METAL OUT

ICO
XT2
XT1

RESET

X2

X1
VSS0
VDD0

DOLBY

MS IN

FF/REW

MOTOR

SUBMO-

SUBMO+

HEAD SEL

VSS1
REEL

STANBY

MODE

PREQ
MUTE
AVDD

AVREF

I/O

O
O

I/O

O

O

O
O
O
O
O

O
O

~

23

Function

I

KEY0 input terminal

I

KEY1 input terminal

I

KEY2 input terminal

I

KEY in select setting terminal (H:active)

I

DOLBY select setting terminal L: No DOLBY

I

REPEAT select setting input terminal L:No REPEAT

I

B.SKIP select setting input terminal

-

Connect to GND

-

A/D converter GND voltage. Connect to GND
Non connect
J-BUS I/O switching output. output:H input:L

I

J-BUS signal interlupt input

I

Tape IN detection switch input

I

CTRL+B input H:Normal operation L:Save mode

I

MEMORY detection
J-BUS clock input/output

-

Power supply (without port section) connect to 5V
J-BUS data output terminal

I

J-BUS data input terminal

-

Non connect

-

Non connect

-

Connect to VSS0 or VSS1

-

Non connect

-

Connect to VSS0 or VSS1

-

Reset detection terminal

-

X'tal oscillator (4.1943MHz)

-

X'tal oscillator (4.1943MHz)

-

Ground voltage of port section. Connect to GND

-

Power supply for port section Connect to 5V
DOLBY ON/OFF setting output H:ON

I

MS input
Input level selrct for MS L:FF,REW H:Normal PLAY
Main motor output H:Motor rotation
Clockwise operation output for sub motor
Counterclockwise operation output for sub motor
HEAD AMP input signal select output L:FWD H:REV

I

GND voltage (without port section)

I

REEL palse input

I

Standby position detection H:EJECT side L:operation side

I

Mode palse input L: mechanism position fix
Power request output H:cassette mechanism operation
Mute request output L:mute request

-

A/D converter analog power supply. Connect to 5V

-

A/D converter reference voltege. Connect to 5V

1-41

KW-XC828

HA13164A (IC911) : Regulator

1.Terminal layout

2.Block diagram

123456789101112131415

ANT OUT

EXT OUT

ANT CTRL

CTRL

CD OUT

AUDIO OUT

C3

0.1u

C4

0.1u

C5

0.1u

C6

10u

2

1

7

11

12

10

MEMORY

AJ ACC

8

Surge Protector

BIAS TSD

15

3

TAB

C1

100u

C2

0.1u

13

AJGND GND

+B

BATT.DET OUT

9

ACC 5V

6

VDD OUT

4

SW5VOUT

5

14

ACC

ILMOUT

R1

C7

0.1u

C8

0.1u

3.Pin function

Pin No. Symbol Function

1
2

EXTOUT
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

ACCIN
VDDOUT
SW5VOUT
ACC5V
ANT CTRL
MEMORY
BATT
9V
CTRL
CD OUT
AJ
ILM
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.

UNIT R:

C:F

note1) TAB (header of IC)

connected to GND

1-42

LC75878W (IC501) : LCD driver

1. Pin layout

100 ~ 76

KW-XC828

2. Block diagram

OSC

VLCD

VLCD0
VLCD1
VLCD2
VLCD3
VLCD4

VDD

VSS

1
~

25

26 ~ 50

P1

GENERAL

PORT

CLOCK

GENERATOR

CONTRAST

ADJUSTER

P4

75

~

51

COM1

COMMON

DRIVER

COM8

S75/COM9

S74/COM10

S73

SEGMENT DRIVER & LATCH

CONTROL

REGISTER

SHIFT REGISTER

CCB

INTERFACE

S1

3. Pin function

No. Symbol

1~73

74

75
76~83
84~87

88

89

90

91

92

93

94

95

96

97

98

99

100

SEG1~SEG73
SEG74
SEG75
COM8~COM1
P1~P4
VDD
VLCD
VLCD0
VLCD1
VLCD2
VLCD3
VLCD4
VSS
OSC
LCD RESET
CE
CL
DI

DI

INH

I/O

O

Segment driver output pin.

O

Segment driver output pin.

O

Segment driver output pin.

O

Common driver output pin.

O

General-purpose output pin.

-

Logic block power supply pin.

-

LCD driver power supply pin.

O

LCD driver bias 4/4 voltage (H-level) power pin.

I

LCD driver bias 3/4 voltage (intermediate level) power pin.

I

LCD driver bias 2/4 voltage (intermediate level) power pin.

I

LCD driver bias 1/4 voltage (intermediate level) power pin.

I

LCD driver bias 0/4 voltage (L-level) power pin.

-

Power supply pin to connect to ground.

I/O

Oscillator pin.

I

Display off, general-purpose output port L fixed input pin.

I

Chip enable

I

Synchronization clock

I

Transfer data

Function

CL

CE

1-43

KW-XC828

LA4743K (IC901) : Power amp.

1.Block diagram

IN 1

0.22 F

TAB

IN 2

0.22 F

+

Vcc 1/2 Vcc 3/4

2200 F 0.022 F

6 20

+

11

-

+

+

-

9

7

OUT 1+

OUT 1-

1

Protective

circuit

+

-

+

12

+

-

PWR GND1

8

OUT 2+

5

OUT 2-

3

PWR GND2

2

ST BY

R.F

47 F

IN 3

PRE GND

IN 4

+5V
ST ON

+

0.22 F

N.C

+

0.22 F

4

Stand by

Switch

Mute

10

+

Ripple

Filter

Mute

22

circuit

3.3 F

+

15

-

+

-

17

19

10K

+

OUT 3+

OUT 3-

Low Level
Mute ON

25

18

21

23

PWR GND3

OUT 4+

OUT 4-

13

14

Protective

circuit

-

+

+

-

1-44

ON TIME C

22 F

Muting &

16

+

ON Time Control

Circuit

PWR GND4

24

2.Terminal layout

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
RFOUT­STBY
RFOUT+
GND
RROUT­GND
RROUT+
SVR
RRIN
RFIN
SGND
FLIN
RLIN
AC-GND
RLOUT+
GND
RLOUT­VCC2
FLOUT+
MUTE
RLOUT­GND
HSD

Header of IC
Power GND
Outpur(-) for front Rch
Stand by input
Output (+) for front Rch
Power input
Output (-) for rear Rch
Power GND
Output (+) for rear Rch
Ripple filter
Rear Rch input
Front Rch input
Signal GND
Front Lch input
Rear Lch input
Power on time control
Output (+) for rear Lch
Power GND
Output (-) for rear Lch
Power input
Output (+) for front
Muting control input
Output (-) for front
Power GND
No connection

KW-XC828

1-45

KW-XC828

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

VO+

VO-

VO2+

VO2-

FR

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

FR

VCCS

3.3VREG

+

-

19

REGIN

1-46

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

KW-XC828

1-47

KW-XC828

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

40k30k

20k 20k

20k

BOTTOM

15k

50 A

12k

12k

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

1-48

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.

KW-XC828

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 ellminating 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 genaration 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

LCD

14
15

16
17

18
19
20

21
22
23
24

VRO
FEO

FEN
RFRP

REIIS
RFGO
RFGC

AGCI
RFO
RFN
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

Signal generation amp input pin for track count

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

1-49

1-50

VSS

io1

io0

AD15

AD16

/WR

AD14

AD13

VSS

REQ

AD6

AD7

AD8

VDDT

AD9

KW-XC828

TC94A02F-005(IC652) : DSP

AD10

io2

io3

io4

VDD

io5

io6

io7

VSSP

PDo

VCoi

VDDP

CK0

VDDX

48

49

50

Generator

Prog.

Start

DIT

VC0

General Input Port

Timing

51

52

53

54

55

56

57

58

59

60

61

62

Xi

47

SRAM I/F

I-Bus

PROM

4k*2+2k

=10kword

40bit

Instruction

Decoder

4546

Interrupt
Control

PRAM

256word

X-Bus
Y-Bus

Program

Control

44

Timer

XRAM

4k word

43

YRAM

4k word

42

41

Flag

CROM

4k word

*3

X0 X1 X2
Y0 Y1 Y2

40

2k word

register

ERAM

39

X-Pointer

register

MX MY MZ

MAC ALU

A0 A1

round & limit

38

General

Output Port

Address Calc.

2sets

Y-Pointer

register

AX AY

A2

37

A3

round & limit

36

C-Pointer

register

35

Bus

Switch

34

33

AD11

32

AD12

31

CKS

30

TESTP

29

28

VSSR

27

VRAR

DAC

DAC

26

Ro

25

VDAR

24

VDAL

23

Lo

22

VRAL

21

VSSL

20

VSS

19

STANDBY

Xo

VSSX

16

/CE

18

VDD

17

/oE

63

10

AD3

Audio.I/F

11

AD4

12

SDi0

13

BCKiA

14

LRCKiA

15

AD5

64

1

/RESET

2

MiMD

AD0

Microcom.I/F

AD1

543

MiDio

6

/MiCK

AD2

87

VDDT

9

SDo

KW-XC828

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

1

/RESET

2

MiMD

3

AD0

4

AD1

5

MiDio

6

/MiCK

7

AD2

8

VDDT

9

SDo

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

AD3
AD4
SDi0
BCKiA
LRCKiA
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

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

1-51

KW-XC828

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

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

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

1-52

M61508FP-X (IC951) : E. volume

1. Pin layout & Block diagram

VCC
(Anarog)

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 OUT1
30
31
32
33
34
35

DEFN IN1
DEFP IN1

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

Differential output terminal (-)
IND2
INC2
INB2
INA2

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

Differential motion amp negative input terminal

Differential motion amp positive input terminal
VCC

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

KW-XC828

18

1-53

KW-XC828

TC94A14FA (IC621) : DSP & DAC

1.Terminal layout & block daiagram

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

LPF

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 Descroption

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

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

O

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

O

Subcode P-W data output pin.

O

Playback frame sync signal output pin.

O

Subcode block sync signal output pin. "H" level at S1 when subcode 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

1-54

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

KW-XC828

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.

-

1-55

KW-XC828

PCM1716E-X (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

1-56

TB2118F-X (IC21) : PLL

1.Terminal Layout

2423222120191817161514

KW-XC828

13

2.Block diagram

NC

2

1

XO

24

XI

FM VCO

AMVCO

IFC

CE

DIN

DOUT

DIMM

15

16

13

3

4

5

6

123456789

Buff.

ON/OFF

OSC circuit

AMP

AMP

AMP

Serial

Interface

101112

Reference Counter

Prescaler

20-bit BINARY COUNTER

Resistor 1
Resistor 2

I/O PORT

Swallow counter

Phase

Comparator

4-bit

12-bit

Programmable counter

22-bit

40bit shift register

OUTPUT PORT

Constant

power supply voltage

switch

Vdd

Vcc

switch

AM CP.

20

­+

+

-

REG.

22

19

vt

18

FM cp

3.Pin Function

Pin

Symbol I/O Function

No.

XOUT

10
11
12

1
2
3
4
5
6
7
8
9

NC

CE

DI

CK

DOUT

SR
I/01
I/02

O1

O2

VDD2

Crystal oscillator pin

O

Non connect

­Chip enable input

I

Serial data input

I

Clock input

I

Serial data output

O

Register control pin

O

I/O ports

I/O

I/O ports

I/O

Non connect

­Non connect

­Single power supply for REF. frequency block

-

7
SL

8

9

I/O -2I/O -1

10 11

12

out-2out-1

vdd2

Pin

Symbol I/O Function

No.

IFC

13

VDD

14

FMIN

15

AMIN

16

DGND

17

FMCP

18

VT

19

AMCP

20

VCC

21

RF

22

AGND

23

XIN

24

17

14

IF signal input

I

Power pins for digital block

­FM band local signal input

I

AM band local signal input

I

Connect to GND (for digital circuit)

­Charge pump output for FM

O

Tuning voltage biased to 2.5V.

­Charge pump output for AM

O

Power pins for analog block

­Ripple filter connecting pin

I

Connect to GND (for analog circuit)

­Crystal oscillator pin

I

21

23

a-gnd

vccd-gndvdd

1-57

KW-XC828

HD74HCT126T-X (IC503) : Buffer

1.Terminal layout

Vcc
14

1

1C

2.Block diagram

2

1A

4C
13

3

1Y

1A

4A
12

4Y
11

4

2C

3C
10

5

2A

6

2Y

3A
9

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
L
H

1C

2A

2C

3A

3C

4A

1Y

2Y

3Y

1-58

4Y

4C

BR24C16F-X (IC702) : EEPROM

KW-XC828

1. Pin layout

VDD WPIN SCL SDA

A0 A1 A2 GND

3. Block diagram

A0 1

A1 2

A2 3

11bit

Address
decoder

16kbit EEPROM allay

11bit

START

Control circuit

2. Pin function

Symbol

VDD

GND

A0,A1,A2

SCL
SDA

WPIN

Slave W ard
Address resister

STOP

I/O

Power supply.

­GND

­No use connect to GND.

I
I

Serial clock input.

I/O

Serial data I/O of slave and ward address.

I

Write protect terminal.

8bit

Data
resister

Function

8 VDD

7 WPIN

6 SCL

GND 4

High voltage osc circuit

LB1641 (IC402) : DC motor driver

1. Pin layout

1 2 3 4 5 6 7 8 9

GNDOUT1 P1

VZ IN1 IN2

VCC1

VCC2 P2

Power supply
voltage det.

10

OUT2

ACK

2. Pin function

Input Output

IN1 IN2 OUT1 OUT2

0 0 0 0
1 0 1 0
0 1 0 1
1 1 0 0

5 SDA

Mode

Brake

CLOCKWISE

COUNTER-CLOCKWISE

Brake

1-59

KW-XC828

HD74HC126FP-X (IC461,IC761) : Buffer

1.Pin layout

2.Pin function

1C

1

1A

2

1Y

3

2C

4

2A

5

2Y

6

GND

7

3.Block diagram

VCC

14

4C

13

4A

12

4Y

11

3C

10

3A

9

3Y

8

Vcc Vcc

1A
2A
3A

Input

4A
1C
2C
3C

See Function Table

4C

1Y

2Y
3Y
4Y

Output

Output
Output

Output

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

Note) CL includes probe and jig capacitance

NJU7241F25-X(IC651,IC504):Voltage regulator

1.Terminal layout & Pin function

(Top View)

Pin function

1
2
3
4
5

GND

IN

V
V

OUT

NC
STB

1

5

2

3

4

1-60

IC-PST9333U-X (IC432,IC791) : Regulator

1. Pin layout

2. Block diagram

KW-XC828

NC 1

GND 2

3. Pin function
Pin No.

Symbol
1
2

GND

3

VOUT

4

Vcc

4 Vcc

Vcc 4

3 VOUT

NC 1

Function

NC

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

3 VOUT

2 GND

RPM6938-V4 (IC502) : Remocon reseiver

1. Block diagram

AGC

AMP

I/V
conversion

PD

magnetic shield

BPF Detector

for
trimming
circuit

Vcc

Comp

Vcc

22k

ROUT

GND

1-61

KW-XC828

W24L010AJ-12-X (IC653) : SRAM

1. Pin layout

DD

A15

V

32

31

1 2 3 4 5 6 7 8 9

NC

3. Pin function
Pin No.

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16

CS2WEA13A8A9

30

29

28

A16

A7A6A5A4A3A2A1

A14

A12

Symbol

NC
A16
A14
A12

A7
A6
A5
A4
A3
A2
A1

A0
I/O1
I/O2
I/O3

Vss

A11OEA10

27

26

25

24

23

10

Function
No Connection
Address Input
Address Input
Address Input
Address Input
Address Input
Address Input
Address Input
Address Input
Address Input
Address Input
Address Input
Data Input/Output
Data Input/Output
Data Input/Output
Ground

CS1

22

11

I/O8

21

12

A0

I/O7

20

13

I/O1

I/O6

19

14

I/O2

I/O5

18

15

I/O3

I/O4

17

16

Vss

Pin No.

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

2. Block diaglam

DD

V
Vss

A0

A16

CS2
CS1

OE

WE

Symbol

I/O4
I/O5
I/O6
I/O7
I/O8

CS1

A10

OE

A11

A9
A8

A13

WE

CS2

A15

DD

V

Function
Data Input/Output
Data Input/Output
Data Input/Output
Data Input/Output
Data Input/Output
Chip Select Inputs
Address Input
Output Enable Input
Address Input
Address Input
Address Input
Address Input
Write Enable Input
Chip Select Inputs
Address Input
Power Supply

DECODER

CONTROL

CORE

ARRAY

DATA I/O

I/O1

I/O8

NJM4565V-X (IC572) : Dual ope amp

1.Terminal layout & Pin function

1

A

2

+

-

B

3

+

-

4

1-62

1

8

7

6

AOUTPUT

2

A-INPUT

3

A+INPUT

4

V

5

B+INPUT

6

B-INPUT

7

B OUTPUT

8

V

5

KW-XC828

VICTOR COMPANY OF JAPAN, LIMITED

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

(No.49729)

200204