JVC KD-S847 Service Manual

49832200304

KD-S847

SERVICE MANUAL

CD RECEIVER

KD-S847

Area Suffix

EE ------ Russian Federation

TABLE OF CONTENTS

1 Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

3 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

4 Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.

No.49832

2003/04

KD-S847

1.1 Safety Precautions

SECTION 1

Important Safety Precautions

!

!

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 (No.49832)

1.2 Preventing 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 prevent this when performing repairs.

1.2.1 Grounding to prevent damage by static electricity

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

(1) Ground the workbench

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

(2) Grou nd yourself

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

(caption)
Anti-static wrist strap

KD-S847

1M

Conductive material
(conductive sheet) or iron plate

(3) Handling the optical pickup

• In order to maintain quality during transport and before insta llation, both sides of the lase r diode on the replacement o ptical
pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)

• 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.

1.3 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 ma y break when subjected to strong force.
(4) I t is not possib le to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.

1.4 Attention when traverse unit is decomposed *Please refer to "Disassembly method" in the text for the CD pickup unit.

• Apply solder to the short land before the flexible wire is disconnected from the connector on the CD pickup unit.
(If the flexible wire is disconnected without applying solder, the CDpickup may be destroyed by static electricity.)

• In the assembly, be sure to remove solder from the short land after connecting the flexible wire.

Short-circuit point

(Soldering)

Flexible wire

Short-circuit point

Pickup

Pickup

(No.49832)1-3

KD-S847

y

Disassembly method

2.1 Main body

2.1.1 Removing the front panel assembly
(See Fig.1)

(1) Push the detach button in the lower right part of the front

panel assembly and remove the front panel assembly in
the direction of the arrow.

2.1.2 Removing the front chassis assembly
(See Figs.2 to 4)

• Prior to performing the following procedure, remove the front

panel assembly.
(1) Re move the two screws A on the both sides of the main

body.

(2) Release the two joints a an d two joints b on both sides

of the main body.

(3) Release the two joints c on the bottom side of the main

body and remove the front chassis assembly in the direc­tion of the arrow.

SECTION 2

Front panel assembly

Detach button

Fig.1

Joint a

A

Joint a

Front chassis assembly

Fig.2

Joint b

A

Joint b

Front chassis assembly

Fig.3

Front chassis assembl

Joint c

Joint c

1-4 (No.49832)

Fig.4

2.1.3 Removing the heat sink

(See Fig.5)

(1) Remove the two screws B and one screws C on the left

side of the main body.

KD-S847

C

2.1.4 Removing the bottom cover

(See Figs.6 and 7)

• Prior to performing the following procedure, remove the front

panel assembly, front chassis assembly and heat sink.
(1) Turn over the main body, and release the two joints d, two

joints e and joint f.

CAUTION:

Do not damage the main board when releasing the joint f using
a screwdriver. (See Figs.6 and 7)

Joint d

Joint f

D

Bottom cover

Heat sink

Fig.5

Bottom cover

Joint e

Fig.6

Joint e

2.1.5 Removing the rear bracket

(See Fig.8)

• Prior to performing the following procedure, remove the front

panel assembly, front chassis assembly, heat sink and bottom
cover.
(1) Remove the three screws D, three screws E and two

screws F on the back side of the main body.

(2) Remove the rear bracket.

Joint f

Joint d

Fig.7

EF

Rear bracket

DD

Fig.8

E

(No.49832)1-5

KD-S847

2.1.6 Removing the main board
(See Fig.9)

• Prior to performing the following procedure, remove the front

panel assembly, front chassis assembly, heat sink, bottom
cover and rear bracket.
(1) Remove the two screws G attaching the main board.
(2) Disconnect the connector CN501 and remove the main

board.

2.1.7 Removing the CD mechanism assembly
(See Fig.10)

• Prior to performing the following procedure, remove the front

panel assembly, front chassis assembly, heat sink, bottom
cover, rear bracket and main board.
(1) Remove the three screws H.

G

CN501

Main board assembly

G

Fig.9

H

1-6 (No.49832)

CD mechanism assembly

Top chassis

H

Fig.10

2.1.8 Removing the front board

(See Figs.11 to 13)

• Prior to performing the following procedure, remove the front

panel assembly.
(1) Remove the four screws J on the back side of the front pan-

el assembly.
(2) Release the fourteen joints g.
(3) Release the joint h and take out the front board.

KD-S847

J

J

Front panel

Joint g

Front board

Rear cover

J

Fig.11

Joint g

Joint g

Joint g

Joint g

Fig.12

Joint h

Front panel

Fig.13

(No.49832)1-7

KD-S847

A

2.2 CD Mechanism Assembly

2.2.1 Removing the top cover
(See Figs.1 and 2)

(1) Remove the two screws A on the both side of the body.
(2) Lift th e front side of the top cover and move the top cover

backward to release the two joints a.

Top cover

Joints a

A

Joints a

A

Fig.1

Fig.2

Top cover

1-8 (No.49832)

KD-S847

2.2.2 Removing the connector board

(See Figs.3 to 5)

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.
(1) Remove the screw B fixing the connector board.
(2) Solder the short-circuit point on the connector board.
(3) Disconnect the flexible wire from the pickup.
(4) Mo ve the connector board in the direction of the arrow to

release the two joints b.

(5) Unsolder the wire on the connector board if necessary.

CAUTION:

Unsolder the short-circuit point after reassembling.

B

Connector board

Flexible wire

Wires

Joints b

Short-circuit point

Fig.3

Short-circuit point

(Soldering)

Pickup

Flexible wire

Frame

Pickup

Fig.4

B

Connector board

Fig.5

(No.49832)1-9

KD-S847

2.2.3 Removing the DET switch
(See Figs.6 and 7)

(1) Extend the two ta bs c of the feed sw. holder and pull out

the switch.

(2) Unsolder the DET switch wire if necessary.

DET switch

Connector
board

DET switch

Tab c

Fig.6

Pickup

Tab c

DET switch wire

Feed sw. holder

Fig.7

1-10 (No.49832)

2.2.4 Removing the chassis unit

r

(See Figs.8 and 9)

• Prior to performing the following procedure, remove the top

cover and connector board.
(1) Remove the two su spension 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.

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

Suspension spring (R)

KD-S847

Chassis unit

Suspension spring (L)

Frame

Suspension spring (R)

Chassis unit

Shafts

Damper

Damper

Fig.8

Suspension spring (L)

Shaft

Dampe

Frame

Fig.9

(No.49832)1-11

KD-S847

2.2.5 Removing the clamper assembly
(See Figs.10 and 11)

• 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.

Clamper arm
spring

Joint d

Clamper assembly

Fig.10

Clamper arm spring

Chassis rivet
assembly

Joint d

Joint d

Chassis rivet assembly

Clamper
assembly

Joint d

Fig.11

1-12 (No.49832)

2.2.6 Removing the loading / feed motor assembly

(See Figs.12 and 13)

• Prior to performing the following procedure, remove the top

cover, connector board and 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.

(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.12.

KD-S847

Loading / feed motor assembly

Fig.12

Loading / feed motor assembly

C

Fig.13

(No.49832)1-13

KD-S847

2.2.7 Removing the pickup unit
(See Figs.14 to 18)

• Prior to performing the following procedure, remove the top

cover, connector board and chassis unit.
(1) Remove the screw D and pull out the pu. shaft holder from

the pu. shaft.
(2) Remove the screw E attaching the feed sw. holder.
(3) Move the part e of the pickup unit upward with the pu. 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 pu. shaft from the pickup unit.
(5) Remove the screw F attaching the feed rack to the pickup

unit.

2.2.8 Reattaching the pickup unit
(See Figs.14 to 17)

(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 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:

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.
(4) Reattach the feed sw. holder using the screw E.
(5) Reattach the pu. shaft to the pickup unit. Reattach the pu.

shaft holder to the pu. shaft using the screw D.

Joint g

Feed sw.
holder

Part e

Feed rack

Part i

E

F

Pickup unit

Slot j

Fig.15

Joint f

Fig.16

Feed rack

Pickup unit

Feed sw. holder

Pu. shaft

Joint h

D

Pu. shaft
holder

Joint f

Pu. shaft

D

Pu. shaft holder

Feed sw. holder

Pickup unit

Fig.14

Part e

E

Joint g

Pickup unit

Feed rack

Fig.17

Pickup unit

Joint g

Joint f

Feed sw. holder

Fig.18

1-14 (No.49832)

KD-S847

r

2.2.9 Removing the trigger arm
(See Figs.19 and 20)

• Prior to performing the following procedure, remove the top

cover, connector board and clamper unit.
(1) Turn the trigger arm in the direction of the arrow to release

the joint k and pull out upward.

CAUTION:

When reassembling, insert the part m and n of the trigger
arm into the part p and q at the slot of the chassis rivet
assembly respectively and join the joint k at a time.

Chassis rivet assembly

Trigger arm

Chassis rivet
assembly

Joint k

Trigger arm

Fig.19

Part p

Part q

Part m

Part n

2.2.10 Removing the top plate assemb ly
(See Fig.21)

• Prior to performing the following procedure, remove the top

cover, connector board, chassis unit, and clamper assembly.
(1) Remove the screw H.
(2) Move the top plate assembly in the direction of the arrow to

release the two joints r.

(3) Unsolder the wire marked s if necessary.

H

Fig.20

Top plate assembly

Joints

s

Fig.21

(No.49832)1-15

KD-S847

2.2.11 Removing the mode sw. / select lock arm
(See Figs.22 and 23)

• Prior to performing the following procedure, remove the top

plate assembly.
(1) Bring up the mode sw. to release from the link plate (joint t)

and turn in the direction of the arrow to release the joint u.
(2) Unsolder the wire of the mode sw. marked s if necessary.
(3) Turn th e select lock arm in the direction of the arrow to re-

lease the two joints v.
(4) The select lock arm spring comes off the select lock arm at

the same time.

Top plate

Link plate

Joint u

Joint t

s

Fig.22

Select lock arm

Select lock arm

Mode sw.

Select lock arm

Top plate

Hook w

Select lock
arm spring

Link plate

Joints v

Fig.23

1-16 (No.49832)

KD-S847

2.2.12 Reassembling the mode sw. / select lock arm
(See Figs.24 to 26)

REFERENCE:

Reverse the above removing procedure.
(1) Reattach the select lock arm spring to the top plate and set

the shorter end of the select lock arm spring to the hook w
on the top plate.

(2) Set the other longer end of the select lock arm spring to the

boss x on the underside of the select lock arm, and join the
select lock arm to the slots (joint v). Turn the select lock
arm as shown in the figure.

(3) Reattach th e mode sw. while setting the part t to the first

peak of the link plate gear, and join the joint u.

CAUTION:

When reattaching the mode sw., check if the points y and
z are correctly fitted and if each part operates properly.

Select lock arm spring

Hook w

Joint v

Joint v

Select lock arm

Boss x

Fig.24

Joint t

Point y

Link plate

Point z

Link plate

Fig.25

Mode sw.

Select
lock arm

Joint t

Joint u

Fig.26

(No.49832)1-17

KD-S847

2.2.13 Removing the select arm R / link plate
(See Figs.27 and 28)

• Prior to performing the following procedure, remove the top

plate assembly.
(1) Brin g up the select arm R to release from the link plate

(joint a') and turn as shown in the figure to release the two
joints b' and joint c'.

(2) Move the lin k plate in the direction of the arrow to release

the joint d'. Remove the link plate spring at the same time.

REFERENCE:

Before removing the link plate, remove the mode sw..

Select arm R

Joint b'

Link plate spring

Top plate

Joint c'

Joint a'

Link plate

Link plate

Joint b'

Fig.27

Joint d'

Fig.28

Joint r

2.2.14 Reattaching the Select arm R / link plate
(See Figs.29 and 30)

REFERENCE:

Reverse the above removing procedure.
(1) Reattach the link plate spring.
(2) Re attach the link pl ate to th e lin k p late spring whil e joi ning

them at joint d'.

(3) Reattach the joint a' of the select arm R to the first peak of

the link plate while joining the two joints b' with the slots.
Then turn the select arm R as shown in the figure. The top
plate is joined to the joint c'.

CAUTION:

When reattaching the select arm R, check if the points e'
and f' are correctly fitted and if each part operates prop­erly.

Select arm R

Joint b'

Joint a'

Link plate spring

Joint c'

Joint d'

Joint b'

Joint a'

Fig.29

Link plate

1-18 (No.49832)

Point e'

Point f'

Fig.30

KD-S847

2.2.15 Removing the loading roller assemb ly

(See Figs.31 to 33)

• Prior to performing the following procedure, remove the

clamper assembly and top plate assembly.
(1) P ush inward the loading roller assembly on the gear si de

and detach it upward from the slot of the joint g' of the lock
arm rivet assembly.

(2) Detach the loading roller assembly from the slot of the joint

h' 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 HL washer from the shaft

of the loading roller assembly.
(3) Remove the screw J attaching the lock arm rivet assembly.
(4) Push the shaft at the joint i' of the lock arm rivet assembly

inward to release the lock arm rivet assembly from the slot

of the L side plate.
(5) E xtend the lock arm rivet assembly outward and release

the joint j' from the boss of the chassis rivet assembly. The

roller guide springs on both sides come off at the same

time.

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 k' of the roller guide
spring inside of the roller guide. (Refer to Fig.34.)

Roller guide
spring

Part k'

Chassis rivet assembly

Loading roller assembly

Loading roller assembly

Roller guide
spring

Fig.32

Boss

Roller guide

Joint h'

Roller guide spring

Loading roller assembly

HL washer

Loading roller assembly

Joint g'

Lock arm rivet assembly

Fig.31

Roller guide

Roller guide spring

Roller guide spring

J

Lock arm rivet assembly

Lock arm rivet assembly

L side plate

Roller guide spring

Joint i'

Part j'

Fig.33

Roller guide

HL washer

Roller shaft assembly

Loading roller

Roller guide spring

Fig.34

(No.49832)1-19

KD-S847

2.2.16 Removing the loading gear 5, 6 and 7
(See Figs.35 and 36)

• Prior to performing the following procedure, remove the top

cover, chassis unit, pickup unit and top plate assembly.
(1) Remove the screw K attaching the loading gear bracket.

The loading gear 6 and 7 come off the loading gear brack­et.

(2) Pull out the loading gear 5.

K

Loading gear 5

Loading gear bracket

K

Loading gear 6

Loading gear 5

Loading gear 3

Fig.35

Loading gear bracket

Loading gear 6

Loading gear 7

Fig.36

1-20 (No.49832)

KD-S847

2.2.17 Removing the gears

(See Figs.37 to 40)

• Prior to performing the following procedure, remove the top

cover, chassis unit, top plate assembly and pickup unit.

• Pull out the loading gear 3. (See Fig.35.)

(1) Pull out the feed gear.
(2) Move the loading plate assembly in the direction of the ar-

row to release the L side plate from the two slots m' of the
chassis rivet assembly. (See Fig.37.)

(3) Detach the loading plate a ssembly upward from the chas-

sis rivet assembly while releasing the joint n'. Remove the
slide hook and loading plate spring from the loading plate
assembly.

(4) Pull out the loading gear 2 and remove the change lock le-

ver.

(5) Remove the E ring and washer attaching the changer gear

2.

(6) The changer gear 2, change gear spring and adjusting

washer come off.
(7) Remove the loading gear 1.
(8) Move the change plate rivet assembly in the direction of the

arrow to release from the three shafts of the chassis rivet

assembly upward. (See Fig.38.)
(9) Detach the loading gear plate rivet assembly from the shaft

of the chassis rivet assembly upward while releasing the

joint p'. (See Figs.38 and 40.)

(10) Pull out the loading gear 4.

Change plate
rivet assembly

Shafts

E ring

Loading plate assembly

Loading plate spring

Joint p'

Loading gear 4

Loading gear plate
rivet assembly

Shaft

Loading gear 2

Loading gear 1

Chassis rivet assembly

Change gear 2

Fig.38

Joint n'

Slide hook

Feed gear

Fig.37

Slot m'

L side plate

Loading plate assembly

Joint n'

Slot m'

Chassis rivet assembly

Chassis rivet assembly

E ring

Washer

Change gear 2

Change gear spring

Adjusting washer

Change plate

rivet assembly

Chassis rivet assembly

L side plate

Slot m'

Slot m'

Fig.39

Loading gear 1

Loading gear 2

Change lock lever

Loading gear 4

Loading gear plate rivet assembly

Fig.40

(No.49832)1-21

KD-S847

2.2.18 Removing the turn table / spind le motor
(See Figs.41 and 42)

• Prior to performing the following procedure, remove the top

cover, connector board, chassis unit and clamper assembly.
(1) Re move the two screws L attaching the spindle motor as-

sembly through the slot of the turn table on top of the body.

(2) Unsolder the wire on the connector board if necessary.

Turn table

L

Fig.41

L

Turn table

1-22 (No.49832)

Spindle motor

Fig.42

3.1 Adjustment method

KD-S847

SECTION 3

Adjustment

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(10.5 to 16V)
Load impedance 20Kohm(2 Speakers connection)
Output Level Line out 2.0V (Vol. MAX)

How to connect the extension cable for adjusting

Standard volume position
Balance and Bass &Treble volume : lndication"0"
Loudness : OFF

Frequency Band
FM1/FM2 87.5 MHz to 108.0 MHz
FM3 65.0 MHz to 74.0 MHz
AM (MW) 522 kHz to 1620 kHz
(LW) 144 kHz to 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.

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

Caution:
Be sure to attach the heat sink and rear
bracket onto the power amplifier IC301
and regulator IC901 respectively,
before supply the power.
If voltage is applied without attaching
these parts, the power amplifier IC
and regulator IC will be destroyed
by heat.

Heat sink

Extension cable

EXTSH002-22P

Rear bracket

(No.49832)1-23

KD-S847

3.2 Flow of functional operation unit TOC read

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

Power ON

v

Set Function CD

When the laser diode correctly

emits

Microprocessor
commands

FMO
TC94A14FA "40"

FEED MOTOR
+TERMINAL
IC501 "4"

REST SW

When correctly focused

FEO
TA2157 "15"

Focus Servo Loop ON

$83

$82

$81

3.3V
Hi-Z
0V

6V
4V
2V

OFF

ON

Pickup feed to the inner area

2.2V

RF signal eye-pattern
remains closed

Disc inserted

YES

Laser emitted

Focus search

Disc rotates

Tracking loop closed

YES

Microprocessor
commands

SEL
TC94A14FA"38"

LD
CN501"15"

"No disc"

display

When the disc correctly rotates

Microprocessor
commands

DMO
TC94A14FA "41"

$84 $86 $ A200

$84

3.3V
0V

4V

0V

3.3V

2.2V
0V

RF signal eye-pattern
opens

TOC read out

Jump to the first track

Play

Spindle
motor(-)
IC501 "7"

Acceleration Servo CLV

Tracking Servo Loop ON

RF signal

6V

3.2
2V

Rough
Servo

0.5 Sec 0.5 Sec

Rough Servo Mode

CLV Servo Mode
(Program Area)

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

1-24 (No.49832)

3.2.1 Feed section

KD-S847

Is the voltage output at
IC541 pin "40" 5V or 0V?

YES

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

YES

Check the feed motor.

3.2.2 Focus section

When the lens is
moving:

Does the S-search
waveform appear at
IC501 pins "8" and "9"?

4V

NO YES NO

Is the wiring for IC501
pin 27?

NO

Is 3.3V present at IC501
pin "20"?

YES

Check the vicinity of

Check CD 8V
and 5V.

IC541.

NO

Is 6V or 2V present at
IC501 "4" and "5"?

YES

Check the feed motor
connection wiring.

NO

Check IC501.

NO

Check the circuits in
the vicinity of IC501
pins "8","9"and"15".

YES

YES

Check the pickup and
its connections

3.2.3 Spindle section

Is the disk rotated?

YES

Does the RF signal
appear at RF test point?

YES

Is the RF waveform at RF
test point distorted?

YES

Proceed to the Tracking
section

3.2.4 Tracking section

When the disc is rotated
at first:

Approx. 1.2V

NO

NO

Is 4V present at IC501
pins "6" and "7"?

YES

Check the spindle motor
and its wiring

NO

Check the circuits in the
vicinity of IC501 "19"~

NO

"24" or the pickup

YES YES

Check the circuit in the
vicinity of IC501 pins
"2"~"12".

Is 4V present at IC541
pins "41" ?

YES

Check the vicinity of
IC501.

Check the pickup and
its connections

NO

Check IC541 and
IC501.

Is the tracking error signal
output at IC501 "11"?

YES

Check IC541.

(No.49832)1-25

KD-S847

3.3 Maintenance of laser pickup

(1) Cl eaning the pick up lens

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

(2) Life of the laser diode

When the life of the laser diode has expired, the following
symptoms will appear.

• The level of RF output (EFM output:ampli tude of eye
pattern) will be low.

Is RF output

1.0 0.35Vp-p?

YES

O.K

(3) Semi-fixed resistor on the APC PC board

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

NO

Replace it.

3.4 Replacement of laser pickup

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

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

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

Play a disc.

Check the eye-pattern at RF test point.

Finish.

1-26 (No.49832)

4.1 AK4381VT-X (IC481) : D/A converter

•Pin layout

KD-S847

SECTION 4

Description of major ICs

MCLK

• Block diagram

BICK
SDTI

LRCK

PDN
CSN

CCLK

CDTI

CSN

CCLK

CDTI

LRCK

BICK
SDTI

1
2
3
4
5
6
7
8

16
15
14
13
12
11
10

9

Interface

Audio

Interface

DZFL
DZFR
VDD
VSS
AOUTL+
AOUTL­AOUTR+
AOUTR-

uP

Data

De-emphasis

Control

8X

Interpolator

8X

Interpolator

MCLK

Clock

Divider

Modulator

Modulator

SCF

SCF

VDD
VSS

DZFL
DZFR

AOUTL+
AOUTL-

AOUTR+
AOUTR-

PDN

• Pin function
Pin No. Symbol I/O Description

1 MCLK I Master clock input terminal
2 BICK I Audio serial data clock terminal
3 SDTI I Audio serial data input terminal
4 LRCK I L/R Clock terminal
5 PDN I Power down mode terminal
6 CSN I Chip select
7 CCLK I Control data input terminal
8 CDTI I Control data input terminal

9 AOUTR- O Rch negative analog output terminal
10 AOUTR+ O Rch positive analog output terminal
11 AOUTL- O Lch negative analog output terminal
12 AOUTL+ O Lch positive analog output terminal
13 VSS - Connect to ground
14 VDD - Power supply terminal
15 DZFR O Rch data zero input detection terminal
16 DZFL O Lch data zero input detection terminal

NOTE:

All input pins should not be left floating.

(No.49832)1-27

KD-S847

4.2 AN80T07 (IC901) : Regulator

• Block diagram

*ASO, Peak Current Protection.
*Thermal Protection (Except
VDD, Comp output).

Outputs

MODE1

6

Reference Voltage

ACC

3

NC

5

Pre

Drive

15 11 1 4 8 9 10 7 12 2 16

14

ILM

10V

MODE2 SW5V

ILM

AJ

Out

Pre

Drive

VDD

5.7V

EXT

Out

ANT

Out

Pre

Drive

EXT Vcc ANT CD

8.0V

13

BATT.DET COMP GND

AUDIO

9.0V

• Pin function
Pin No. Symbol Function

1 SW5V Output When Mode 1 pin is "M", "H" SW output is VDD -0.7V (Io=100mA min).
2 COMP Output When ACC input pin is "H" COMP Output is VDD -0.7V (Io=100mA min).
3 ACC Input L: COMP Output OFF and H: COMP Output ON
4 VDD Output 5.7V Output voltage for a microcontroller (Io=100mA min).
5 NC NC pin
6 MODE1 3 Input "L", "M", "H" control pin
7 CD Output When Mode 1 pin is "H" CD output is 8V (Io=1200mA min).
8 EXT Output When Mode 1 pin is "M", "H" EXT output is Vcc-1.0V (Io=300mA min).

9 VCC Connected to car BACKUP Power supply.
10 ANT Output When Mode 2 pin is "H" ANT output is Vcc-1.0V (Io=300mA).
11 MODE2 L: ANT Output OFF and H: ANT Output ON
12 BATT.DET NPN Transistor open collector Output (When battery is lower then 9V "L")
13 Audio Output When Mode 1 pin is "M", "H" Audio output is 9V (Io=500mA min).
14 ILM AJ ILM (Illumination) Output adjustable pin.
15 ILM(Illumination) Output When Mode 1 pin is "M", "H" ILM output is 10V (Io=300mA min).
16 GND Connected to the IC substrate.

Pre

Drive

1-28 (No.49832)

4.3 IC-PST600M/G/-W (IC702) : System reset

• Block diagram

Co1

4.4 RPM6938-SV4 (IC602) : Remote control receiver

• Block diagram

OP1

1

3

2

KD-S847

IN

Vout

GND

I/V
conversion

PD

magnetic shield

AMP

BPF

for
trimming circuit

AGC

Detector

Vcc

Comp

22k
ohm

3

1

2

VDD

OUT

GND

(No.49832)1-29

KD-S847

4.5 LA47505 (IC301) : Power amp.

• Block diagram

206

11

1

12

4

10

Stand by

Switch

Ripple

Filter

Protective

circuit

Mute

circuit

9

7

8

5

3

2

22

15

25

13

14

16

Muting &

On Time Control

Circuit

protective

circuit

17

19

18

21

23

24

1-30 (No.49832)

•Pin layout

AC CONT1

GND1

OUTFR-

STBY

OUTFR+

Vcc1/2

OUTRR-

GND2

OUTRR+

VREF

INRR

INFR

SGND

INFL

INRL

ONTIME

OUTRL+

GND3

OUTRL-

Vcc3/4

OUTFL+

MUTE

OUTFL-

GND4

NC

• Pin function
Pin No. Symbol Function

1 AC CONT1 Header of IC
2 GND1 Power GND
3 OUTFR- Outpur(-) for front Rch
4 STBY Stand by input
5 OUTFR+ Output (+) for front Rch
6 Vcc1/2 Power input
7 OUTRR- Output (-) for rear Rch
8 GND2 Power GND

9 OUTRR+ Output (+) for rear Rch
10 VREF Ripple filter
11 INRR Rear Rch input
12 INFR Front Rch input
13 SGND Signal GND
14 INFL Front Lch input
15 INRL Rear Lch input
16 ONTIME Power on time control
17 OUTRL+ Output (+) for rear Lch
18 GND3 Power GND
19 OUTRL- Output (-) for rear Lch
20 Vcc3/4 Power input
21 OUTFL+ Output (+) for front
22 MUTE Muting control input
23 OUTFL- Output (-) for front
24 GND4 Power GND
25 NC No connection

KD-S847

(No.49832)1-31

KD-S847

W

4.6 LA6579H-X (IC501) : 4-Channel bridge driver

• Pin layout & Block diagram

VIN1-A

1

­+

VIN1+A

VCCP1

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

Level shift

Level shift

Level shift

33k

11k

-

+

All outputs ON/OFF

H : ON

L : OFF

3.3VREG
(External:PTP Tr)

Signal system
power supply

MUTE

Power system GND

Signal system
power supply

+

-

25

24

23

22

FR

21

20

19

S-GND

VIN1-S

MUTE

VREFIN

FR

VCCS

3.3VREG

REGIN

VO4-

VCCP2

VIN4

VIN4G

1-32 (No.49832)

11

12

13

14

11k

33k

­+

33k

33k

18

VIN2G

11k

-

17

VIN2

+

16

VIN3G

11k

-

15

VIN3

+

• Pin function
Pin No. Symbol Function

1 VIN1-A CH1 input AMP_inverted input
2 VIN1+A CH1 input AMP_non-inverted input
3 VCCP1 CH1 and CH2 power stage power supply
4 VO1+ Output pin(+)for channel 1
5 VO1- CH1 output pin (-) for channel 1
6 VO2+ Output pin(+)for channel 2
7 VO2- Output pin(-)for channel 2
8 VO3+ Output pin(+)for channel 3

9 VO3- Output pin(-)for channel 3
10 VO4+ Output pin(+)for channel 4
11 VO4- Output pin(-)for channel 4
12 VCCP2 CH3 and CH4 power stage powr supply
13 VIN4 Input pin for channel 4
14 VIN4G Input pin for channel 4(for gain adjustment)
15 VIN3 Input pin for channel 3
16 VIN3G Input pin for channel 3(for gain adjustment)
17 VIN2 Input pin for channel 2
18 VIN2G Input pin for channel 2(for gain adjustment)
19 REGIN External PNP transistor, base connection
20 3.3VREG 3.3VREG output pin, external PNP transistor, collector connection
21 VCCS Signal system GND
22 VREFIN Reference voltage application pin
23 MUTE Output ON/OFF pin
24 VIN1_SW CH1 input OP AMP_changeover pin
25 S_GND Signal system GND
26 VIN1+B CH1 AMP_B non-inverted input pin
27 VIN1-B CH1 AMP_B inverted input pin
28 VIN1 CH1 input pin input OP_AMP outpu t pin

KD-S847

(No.49832)1-33

KD-S847

4.7 LC75823W (IC601) : LCD driver

• Pin Layout

DICLCE

OSC

Vss

VDD2

VDD1

INH

VDD

COM3

COM2

COM1

S52

S51

S50

S49

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

1

S1
S2
S3
S4
S5
S6
S7
S8
S9

S10

S11
S12
S13
S14
S15
S16

2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33

S48
S47
S46
S45
S44
S43
S42
S41
S40
S39
S38
S37
S36
S35
S34
S33

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

S17

S18

S19

S20

S21

S22

S23

S24

S25

S26

S27

S28

S29

S30

S31

S32

• Pin function
Pin No. Symbol I/O Functions

1 to 52 S1 to S52 O Segment output pins used to display data transferred by serial data input.

53 to 55 COM1 to COM3 O Common driver output pins. The frame frequency is given by : t0=(fosc/384)Hz.

56 VDD -- Power supply connection. Provide a voltage of between 4.5 and 6.0V.
57 INH

58 VDD1 I Used for applying the LCD drive 2/3 bias voltage externally.

59 VDD2 I Used for applying the LCD drive 1/3 bias voltage externally.

60 Vss -- Power supply connection. Connect to GND.
61 OSC I/O Oscillator connection.

62 CE I S erial data interface connection to the controller. CE : Chip enable
63 CL I Serial data interface connection to the controller. CL : Sync clock
64 DI I Serial data interface connection to the controller. DI : Transfer data

I Display turning off input pin.

INT="L" (Vss) ----- off (S1 to S52, COM1 to COM3="L"

="H" (VDD)----- on

INT
Serial data can be transferred in display off mode.

Must be connected to VDD2 when a 1/2 bias drive scheme is used.

Must be connected to VDD1 when a 1/2 bias drive scheme is used.

An oscillator circuit is formed by connecting an external resistor and capacitor at this pin.

1-34 (No.49832)

KD-S847

T

A

4.8 M24C16-WMN6-X (IC771) : EPROM

•Pin layout

• Pin function
Pin No. Symbol Function

1~3 A0~A2 No internal connection

4 GND +2.5V to 5.5V Power supply
5 SDA Write protect input

4.9 NJM4565M-WE (IC581) : CD L.P.F.

•Pin layout

• Block diagram

WP

HV GENERATOR

I/O
CONTROL
LOGIC

SDA SCL

VCC

Vss

MEMORY
CONTROL
LOGIC

XDEC

EEPROM ARRAY

(8x 256 x8)

PAGE LATCHES

YDEC

SENSE AMP

F/W CNTROL

Pin No. Symbol Function

6 SCL Serial clock
7 WPIN Serial address / data I/O
8 Vdd Ground

+

OUTPUT

-

A INPUT

+

A INPUT

V

1

2

3

-

4

8

V

B OUTPU

7

B INPUT

6

5

B INPUT

-

+

(No.49832)1-35

KD-S847

T

4.10 NJU7241F25-X (IC461) : Regulator

• Pin layout

GND 1

VIN 2

VOUT 3

• Block diagram

VIN 2

STB 5

GND 1

4.11 NJU7241F33-X (IC471) : Voltage regulator

• Pin layout

PIN FUNCTION

1

2

5

1. GND

IN

2. V

3. VOUT

4. +NC

5. STB

5 STB

4 NC

Short protect

3 VOU

Vref

1 GND

3

4

1-36 (No.49832)

4.12 TB2118F-X (IC31) : PLL

• Pin Layout

2423222120191817161514

KD-S847

13

• Block diagram

FM VCO

AMVCO

DIN

CK

DOUT

123456789

osc

XO

XI

IFC

CE

2

1

24

15

16

13

3

4

5

6

Buff.

ON/OFF

OSC circuit

AMP

AMP

AMP

Serial

Interface

0112

Prescaler

Reference Counter

4-bit

Swallow counter

Programmable counter

20-bit BINARY COUNTER

Resistor 1
Resistor 2

I/O PORT

OUTPUT PORT

Phase

Comparator

12-bit

22-bit

40bit shift register

Constant

power supply voltage

switch

Vdd

switch

Vcc

AM CP.

20

­+

+

-

RF

22

19

Vt

18

FM cp

7

SL

8

9

I/O -2I/O -1

10 11

12

out-2out-1

vdd2

14

17

21

23

a-gnd

vccd-gndvdd

• Pin Function
Pin

Symbol I/O Function

No.

Pin

Symbol I/O Function

No.
1 XOUT O Crystal oscillator pin 13 IFC I IF signal input
2 OSC - Non connect 14 VDD - Power pins for digital blo ck
3 CE I Chip enable input 15 FMIN I FM band local signal input
4 DI I Serial data input 16 AMIN I AM band local signal input
5 CK I Clock input 17 DGND - Connect to GND (for digital circuit)
6 DOUT O Serial data output 18 FMCP O Charge pump output for FM
7 SR O Register control pin 19 Vt - Tuning voltage biased to 2.5V.
8 I/01 I/O I/O ports 20 A MCP O Charge pump output for AM
9 I/02 I/O I/O ports 21 VCC - Power pins for analog block
10 OUT1 - Non connect 22 RF I Ripple filter connecting pin
11 OUT2 - Non connect 23 AGND - Connect to GND (for analog circuit)
12 VDD2 - Single power supply for REF. frequency block 24 XIN I Crystal oscillator pin

(No.49832)1-37

KD-S847

4.13 TA2157FN-X (IC521) : RF amp

• Pin layout

24 ~ 13

1 ~ 12

• Block diagram

13

14

15

16

17

18

19

20

21

10pF

20k

40k30k

20k 20k

20k

15k

50 A

12k

12k

BOTTOM

PEAK

20k

20k

20k

PEAK

1.3V

40k

240k

15pF

240k

15pF

40k

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

PIN
VCTRLPIN

1-38 (No.49832)

180k

40pF

22

23

24

SEL

(APC SW)

180k

40pF

3k

3k

TEB

(TE BAL)

60k

60k

RFGC

(AGC Gian)

VCC APC ON -50% +12dB

HiZ APC ON 0% +6dB

GND

APC OFF

(LDO=H)

50% 0dB

94k

94k
22k

22k

3

2

1

TEB

(TE BAL)

Normal mode

(0dB)

Normal mode

(0dB)

CD-RW mode

(+12dB)

• Pin function
Pin No. Symbol I/O Function

1 VCC - 3.3V power supply pin
2 FNI I Main-beam amp input pin
3 FPI I Main-beam amp input pin
4 TPI I Sub-beam amp input pin
5 TNI I Sub-beam amp input pin
6 MDI I Monitor photo diode amp input pin
7 LDO O Laser diode amp output pin
8 SEL I APC circuit ON/OFF control signal, laser diode (LDO) control signal input

or bottom/peak detection frequency change pin.

APC

SEL

circuit

GND

OFF Connected VCC through 1k resistor

Hiz

ON

VCC

ON Control signal output

9 TEB 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
10 TEN I Tracking error signal generation amp negative-phase input pin
11 TEO O Tracking error signal generation amp output pin.

Combining TEO signal RFRP signal with TC94A14F/FA configures tracking search system.
12 RFDC O RF signal peak detection output pin
13 GVSW I AGC/FE/TE amp gain change pin

Control signal output

LDO

KD-S847

GVSW Mode
GND
Hiz

CD-RW
Normal

VCC

14 VRO O Reference voltage (VRO) output pin

*VRO=1/2VCC When VCC=3.3V
15 FEO O Focus error signal generation amp output pin
16 FEN I Focus error signal generation amp negative-phase input pin
17 RFRP O Signal amp output pin for track count

Combining RFRP signal and TEO signal with TC94A14F/FA configures tracking search system.

18
19
20

21 AGCIN I RF signal amplitude adjustment amp input pin
22 RFO O RF signal generation amp output pin
23 RFI I RF signal generation amp input pin
24 GND - GND pin

REIS
RFGO
RFGC

I

OIRF signal amplitude adjustment amp output pin

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

(No.49832)1-39

KD-S847

4.14 TC94A14FA (IC541) : DSP & DAC

• Pin layout & Block daiagram

48 47 46 45 44 43 42 41 40 39

38 37 36 35 34 33

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

LPF

generator

Micro-

controller

interface

Clock

1-bit
DAC

Correction

Audio out

circuit

circuit

Address

circuit

16 k

RAM

Digital
output

PWM

Servo
control

ROM

RAM

CLV servo

Synchronous

guarantee

EFM

decoder

Sub code

decoder

Digital equalizer

automatic

adjustment circuit

A/D

slicer

VCO

PLL

TMAX

D/A

Data

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

64

17

161514131211101 2 3 4 5 6 7 8 9

• Pin function
Pin No Symbol I/O Descroption

1 BCK O Bit clock output pin.32fs, 48fs, or 64fs selectable by command.
2 LRCK 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 O Audio data output pin. MSB-first or LSB-first selectable by command.
4 DOUT O Digital data output pin.Outputs up to double-speed playback.
5 IPF O Correction flag output pin. When set to "H", AOUT output cannot be corrected by C2 correction processing.
6V
7V

DD3
SS3

- Digital 3.3V power supply voltage pin.

- Digital GND pin.
8 SBOK O Subcode Q data CRCC result output pin. "H" level when result is OK.
9 CLCK O Subcode P-W data read I/O pin. I/O polarity selectable by command.

10 DATA O Subcode P-W data output pin.
11 SFSY O Playback frame sync signal output pin.
12 SBSY O Subcode block sync signal output pin. "H" level at S1 when subcode sync is detected.
13 HSO
14 UHSO
15 PV

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

- PLL-only 3.3V power supply voltage pin.

DD3

16 PDO O EFM and PLCK phase difference signal output pin.

1-40 (No.49832)

Pin No Symbol I/O Descroption

17 TMAX O TMAX detection result output pin.

KD-S847

TMAX Detection Result
Longer than fixed period

Within fixed period
Shorter than fixed period

TMAX Output

"PV

DD3"

"HiZ"

SS3"

"AV

18 LPFN I Inverted input pin for PLL LPF amp.
19 LPFO O Output pin for PLL LPF amp.
20 PVREF - PLL-only VREF pin.
21 VCOF O VCO filter pin.
22 AV

- Analog GND pin.

SS3

23 SLCO O DAC output pin for data slice level generation.
24 RFI I RF signal input pin. Zin selectable by command.
25 AV

- Analog 3.3V power supply voltage pin.

DD3

26 RFCT I RFRP signal center level input pin.
27 RFZI I RFRP signal zero-cross input pin.
28 RFRP I RF ripple signal input pin.
29 FEI I Focus error signal input pin.
30 SBAD I Sub-beam adder signal input pin.
31 TEI I Tracking error input pin. Inputs when tracking servo is on.
32 TEZI I Tracking error signal zero-cross input pin.
33 FOO O Focus equalizer output pin.
34 TRO O T r acking equalizer output pin.
35 VREF - Analog reference power supply voltage pin.
36 RFGC O RF amplitude adjustment control signal output pin.
37 TEBC O Tracking balance control signal output pin.
38 SEL O APC circuit ON/OFF signal output pin. At laser on, high impedance with UHS="L",

H output with UHS="H".

39 AV

- Analog 3.3V power supply voltage pin.

DD3

40 FMO O Feed equalizer output pin.
41 DMO O Disc equalizer output pin.
42 V
43 V

SS3

DD3

- Digital GND pin.

- Digital 3.3V power supply voltage pin.
44 TESIN I Test input pin. Normally, fixed to "L".
45 XV

- System clock oscillator GND pin.

SS3

46 XI I System clock oscillator input pin.
47 XO O Syste m clock oscillator output pin.
48 XV
49 DV

SS3

- System clock oscillator 3.3V power supply voltage pi n.

DD3

R - DA converter GND pin.
50 RO O R-channel data forward output pin.
51 DV

- DA converter 3.3V power supply pin.

DD3

52 DVR - Reference voltage pin.
53 LO O L-channel data forward output pin.
54 DV

L - DA converter GND pin.

SS3

55 ZDET O 1 bit DA converter zero detection flag output pin.
56 V

SS5

- Microcontroller interface GND pin.
57 BUS0
58 BUS1

I/O Microcontroller interface data I/O pins.59 BUS2
60 BUS3
61 BUCK I Microcontroller interface clock input pin.
62 /CCE I Microcontroller interface chip enable signal input pin.At "L", BUS0 to BUS3 are active.
63 /RST I Reset signal input pin. At reset, "L".
64 V

DD5

- Microcontroller interface 5V power supply pin.

(No.49832)1-41

KD-S847

4.15 TC94A20F-011 (IC401) : DAC/SRAM built in type D-ROM decoder+ MP3 decoder

• Pin layout & Block diagram

32 31 30 29 28

33

34

35

36

37

38

39

40

41

port

General output

Flag

DIT

2sets

Address calc.

ERAM

2k word

CROM

4k word

*7

27

Bus

Switch

register

C-Pointer

register

Y-Pointer

register

X-Pointer

25

26

DAC DAC

register

X0 X1 X2

24

Y0 Y1 Y2

22 21

23

ALU

MAC

MX AX AYMY MZ

20 19 18 17

A2A1A0 A3

round & limit round & limit

16

15

14

13

12

11

Audio I/F

10

9

8

42

Y-RAM

4k word

43

Timer

44

control

45

46

47

48

Interrupt

DRAM I/F

5049

General

inputbport

51

X-RAM

SRAM I/F

52

4k word

53

1Mbit

SRAM

I/F

SubCode

PRAM

256word

Program

PROM

VCO

5857565554

control

4k*3

=12k word

Timing

generator

6059

decoder

Instruction

6261

Microcom. I/F

63

7

6

5

4

3

2

1

64

1-42 (No.49832)

• Pin functions
Pin No Symbol I/O Functions

1 /RESET I Hard reset input H:normal L:reset
2 MiMD I Micon I/F mode select input
3 /MiCS I Micon I/F chip select input
4 /MiLP I Micon I/F latch palus input
5 MiDio I/O Micon I/F data input/output
6 /MiCK I Micon I/F clock input
7 MiACK O Micon I/F acknowledge output
8 VDDT - Power supply for digital (3.3V)

9 SDo O Data output
10 BCKo O Bit output
11 LRCKo O LR clock output
12 SDiO I Data input 0
13 BCKiA I Bit clock input A
14 LRCKiA I LR clock input A
15 SDiL I Data input terminal 1
16 BCKiB I Bit clock input terminal B
17 LRCKiB I LR clock input terminal B
18 VDD - Power supply for digital (2.5V)
19 STANBY I Standby mode control input H:STBY L:normal
20 VSS - GND for digital
21 VSSL - GND for DAC Lch
22 VRAL - Reference voltage for DAC Lch
23 LO O DAC Lch output

24,25 VDAL,VDAR - Power supply for DAC Lch/Power supply for DAC Rch (2.5V)

26 RO O DAC Rch output
27 VRAR - Reference voltage for DAC Rch
28 VSSR - GND for DAC R ch
29 TESTP I Test terminal H:test mode L:normal
30 TXO O SPDIF output

31~34 Po0~Po3 O General purpose output 0 ~ 3

35 VDDT - Power supply for digital (3.3V)

36~38 Po4~Po6 O General purpose output 4 ~ 6

39 REQ O REC terminal
40 VSS - GND for digital
41 IRO I/O External interrupt input
42 VDDM - Internal 1Mbit SRAM power supply (2.5V)

43,44 Fi0,Fi1 I Flug input 0,1

45 VSSM - GND for internal 1Mbit SRAM

46,47 Pi0,Pi1 I General ourpose input 0,1

48 VSS - GND for digital

49,50 Pi2,Pi3 I General purpose input 23

51 Pi4/CLCL I General purpose input 4/SUBQ I/F clock inputoutput
52 VDD - Power supply for digital (2.5V)
53 Pi5/DAT A I General purpose input 5/SUBQ I/F data input
54 TSTiN/SFSY I Test terminal/SUBQ I/F flame sync input
55 Fi2/SBSY I Flug input 2/SUBQ I/F block sync input
56 VSSP - GND for VCO
57 Pdo O PL L phase error detection signal output
58 Vcoi I VCO control voltage input
59 VDDP - Power supply for VCO (2.5V)
60 CKo/CKi I/O External clock input/Clock output terminal
61 VDDX - Power supply for X'tal oscillator (2.5V)

62,63 Xi,Xo I,O Oscillator connection terminal for input/output

64 VSSX - GND for oscillator

KD-S847

(No.49832)1-43

KD-S847

4.16 TEA6320T-X (IC161) : E.volume

• Pin layout

SDA

1

GND

2

OUTLR

3

OUTLF

4

TL

5

B2L

6

B1L

7

IVL

8

ILL

9

QSL

10

IDL

11

MUTE

12

ICL

13

IMD

14

IBL

15

IAL

16

• Block diagram

SCL

32

VCC

31

OUTRR

30

OUTRF

29

TR

28

B2R

27

B1R

26

IVR

25

ILR

24

QSR

23

IDR

22

Vref

21

ICR

20

CD-CH

TAPE

TUNER

CAP

19

IBR

18

IAR

17

10 8 9 7 6

5

12

MUTE

LEFT

FUNCTION

ZERO CROSS

DETECTOR

21

POWER

31

SUPPLY

2

19

VOLUME 1

+20 to -31 dB

LOUDNESS

LEFT

BASS
LEFT

+15 dB

TREBLE

+12 dB

16
15
13
11

SOURCE

SELECTOR

14

22
20

VOLUME 1

+20 to -31 dB

LOUDNESS

RIGHT

LOGIC

BASS
RIGHT
+15 dB

TREBLE

RIGHT
+12 dB

18
17

VOLUME 2

0 to 55 dB

BALANCE

FENDER REAR

VOLUME 2

0 to 55 dB
BALANCE

FENDER FRONT

HC BUS

REC

VOLUME 2

0 to -55dB
BALANCE

FENDER FRONT

VOLUME 2
0 to -55dB
BALANCE

FENDER REAR

3

4

32

1

29

30

23 25 24 26 27 28

1-44 (No.49832)

• Pin functions
Pin No. Symbol I/O Functions

1 SDA I/O Serial data input/output.
2 GND - Ground.
3 OUTLR O output left rear.
4 OUTLF O output left front.
5 TL I Treble control capacitor left channel or input from an external equalizer.
6 B2L - Bass control capacitor left channel or output to an external equalizer.
7 B1L - Bass control capacitor left channel.
8 IVL I Input volume 1. left control part.

9 ILL I Input loudness. left control part.
10 QSL O Output source selector. left channel.
11 IDL - Not used
12 MUTE - Not used
13 ICL I Input C left source.
14 IMO - Not used
15 IBL I Input B left source.
16 IAL I Input A left source.
17 IAR I Input A right source.
18 IBR I Input B right source.
19 CAP - Electronic filtering for supply.
20 ICR I Input C right source.
21 Vref - Reference voltage (0.5Vcc)
22 IDR - Not used
23 QSR O Output source selector right channel.
24 ILR I Input loudness right channel.
25 IVR I Input volume 1. right control part.
26 B1R - Bass control capacitor right channel
27 B2R O Bass control capacitor right channel or output to an external equalizer.
28 TR I Treble control capacitor right channel or input from an external equalizer.
29 OUTRF O Output right front.
30 OUTRR O Output right rear.
31 Vcc - Supply voltage.
32 SCL I Serial clock input.

KD-S847

(No.49832)1-45

KD-S847

4.17 UPD784215AGC205 (IC701) : CPU

• Pin layout

75 51

76 100

125

50 26

• Pin function
Pin No. Symbol I/O Function

1,2 NC O Not use

3 SW2 I CD mecha SW2
4 PSW I CD mecha position setting SW
5 LM O Loading motor control output
6 MOTOR SEL O Loading/feed motor selecting output

Loading motor; H (A amp), feed motor; L (B amp)

7,8 NC - Not use

9 VDD Micon power supply
10 X2
11 X1
12 VSS - Ground
13 XT2
14 XT1
15 RESET I System reset
16 SW1 I CD mecha SW1
17 BUS-INT I J-BUS INT
18 PS2 I Power save2, H means STOP mode

19 to 22 NC I Not use

23 AVDD - A/D converter power supply
24 AVREF0 - A/D reference voltage
25 VOL1 I Volume encoder pulse input 1
26 VOL2 I Volume encoder pulse input 2
27 KEY0 I Key input 0
28 KEY1 I Key input 1
29 KEY2 I Key input 2
30 LEVEL I Level meter input
31 NC I Not use
32 SM I S.METER input
33 AVSS - Ground

34,35 NC - Not use

36 AVREF ­37 BUS-SI I J-BUS data input
38 BUS-SO O J-BUS data output
39 BUS-SCK I/O J-BUS clock input/output
40 BUS-I/O O J-BUS I/O selection output: H, input: L
41 LCD-DA O Data output for LCD driver
42 LCD-SCK O CLK output for LCD driver
43 LCD-CE O CE for LCD driver

44 to 48 NC - Not use

1-46 (No.49832)

Pin No. Symbol I/O Function

49 CSN O Chip select out
50 CCLK O Clock out
51 CDTI O Data out
52 PDN O Power down control for DAC
53 SD/ST I Station detector or stereo indicator input ; H means a station is there. L means the pro-

gram is stereo.
54 MP3 CLK O CLK output for MP3 decoder
55 MONO O Monaural selection output; H means monaural.
56 MP3 DATA IN O Data input for MP3 decoder / inverting input due to converter
57 MP3 DAT A OUT O Data input for MP3 decoder / H level during input mode
58 MP3 STANBY O Standby output for MP3 decoder; H=STB, L=NORMAL
59 MP3 RESET O Reset output for MP3 decoder; H=NORMAL, L=RESET
60 MP3 REQ I REQ input for MP3 decoder / inverting input due to converter
61 DETACH I Detach detect input ; H mean s detaching.
62 NC - Not use
63 SEEK/STOP O Auto seek and stop selecting output ; H means seeking, L means receiving.
64 IFC CONT O IFC control output
65 FM/AM O FM, AM band selecting output ; H = FM, L= AM
66 PLL-CE O CE output for PLL IC
67 PLL-DO O Data output for PLL IC
68 PLL-CLK O Clock output for PLL IC
69 PLL-DI I Data input from PLL IC
70 TEL-MUTING I Telephone muting detection input ; Active level can be selected H or L in PSM.
71 NC - Not use
72 VSS - Ground
73 NC - Dimmer detector input, L=dimmer on
74 PS1 I POWER SAVE1, L= ACC off
75 POWER O POWER ON/OFF control output, H=power on
76 CD-ON O CD power supply control output, H=CD power on
77 MUTING O Muting output, L=muting on

78 to 80 NC - Not use

81 VDD - Micon power supply
82 NC - Not use
83 VOL-DA O Data output for e-vol IC
84 VOL-CLK O Clock output for e-vol IC

85 to 90 NC - Not use

91 BUCK O Clock output for CD LSI
92 CCE O CE output for CD LSI
93 RST O Reset output for CD LSI
94 TEST - For rewriting flash memory
95 BUS0 I/O Data output and input 0 for CD LSI
96 BUS1 I/O Data output and input 1 for CD LSI
97 BUS2 I/O Data output and input 2 for CD LSI
98 BUS3 I/O Data output and input 3 for CD LSI
99 NC - Not use

100 CD-RW O RF gain control; L=CD-RW, H=CD-DA

KD-S847

(No.49832)1-47

KD-S847

VICTOR COMPANY OF JAPAN, LIMITED

AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

(No.49832)

Printed in Japan

200304WPC