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SERVICE MANUAL

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD. No.498192003/03

KD-SX998R,KD-SX997R

CD RECEIVER49819200303

KD-SX998R,KD-SX997R

TABLE OF CONTENTS1 Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-43 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-234 Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

SOUND

VOL VOL

SOURCER F

U

D

ATT

Area Suffix

E ------- Continental EuropeEX ----------- Central Europe

MODEL

KD-SX998R

KD-SX997R

Panel color

Black

Silver

KD-SX998R,KD-SX997R

1-2 (No.49819)

SECTION 1Important Safety Precautions

1.1 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.

KD-SX998R,KD-SX997R

(No.49819)1-3

1.2 Preventing static electricityElectrostatic 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 electricityStatic 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 workbenchGround the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing thetraverse unit (optical pickup) on it.

(2) Ground yourselfUse an anti-static wrist strap to release any static electricity built up in your body.

(3) Handling the optical pickup• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical

pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.)

• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easilydestroy 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 longa time when attaching it to the connector.

(3) Handle the flexible cable carefully as it may break when subjected to strong force. (4) I t is not possible 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.

1M

(caption)Anti-static wrist strap

Conductive material(conductive sheet) or iron plate

Pickup

Short-circuit point(Soldering)

Flexible wire

PickupShort-circuit point

KD-SX998R,KD-SX997R

1-4 (No.49819)

SECTION 2Disassembly method

2.1 Main body2.1.1 Removing the front panel assembly

(See Fig.1) (1) Push the detach button in the left right part of the front pan-

el and remove the front panel assembly in the direction ofthe arrow.

Fig.12.1.2 Removing the front chassis assembly

(See Figs.2 to 4)• Prior to performing the following procedure, remove the front

panel assembly.(1) Remove the screw A on the both sides of the main body.(2) Remove the two screws B on the front side of the main

body.(3) Release the two joints a and two joints b on both sides of

the main body using a screwdriver, and remove the frontchassis assembly forward.

Fig.2

Fig.3

Fig.4

Front panel assembly

Detach button

Joint a

Joint a

Front chassis assembly

A

Joint b

Joint b

A

Front chassis assemblyJoint c Joint c

B

KD-SX998R,KD-SX997R

(No.49819)1-5

2.1.3 Removing the heat sink(See Fig.5)

(1) Remove the two screws C and two screws D on the leftside of the main body.

Fig.52.1.4 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 body and release the two joints c, two joints

d and joint e.CAUTION:

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

Fig.6

Fig.7

C

DHeat sink

Joint d

Joint eJoint f

Bottom cover

Joint e

Joint d

Joint f

Bottom cover

KD-SX998R,KD-SX997R

1-6 (No.49819)

2.1.5 Removing the rear bracket(See Fig.8)

• Prior to performing the following procedure, remove the frontpanel assembly, front chassis assembly, heat sink and bottomcover.(1) Remove the three screws E, one screws F and three

screws G on the back of the main body.(2) Remove the rear bracket.

REFERENCE:During reassembly, before fixing the rear bracket onto themain body, insert the Subwoofer cable into the slot.

Fig.82.1.6 Removing the main board

(See Fig.9)• Prior to performing the following procedure, remove the front

panel assembly, front chassis assembly, heat sink, bottomcover and rear bracket(1) Remove the two screws H attaching the main board.(2) Disconnect the connector CN101 and remove the main

board.

Fig.92.1.7 Removing the CD mecha board

(See Fig. 10)• Prior to performing the following procedure, remove the front

panel assembly, front chassis assembly, heat sink, bottomcover, rear bracket and main board.(1) Remove the five screws J attaching the CD mecha board.(2) Disconnect the card wire from the mecha connector.(3) Move the CD mecha board in the direction of the arrow to

release it from the joint f.

Fig.10

G

E E

FRear bracket

G

Insert Subwoofer and steering

cables into the slots.

Main board

HH

CN101

J

J

Mecha control board

Mecha connector

Card wire

Top chassis

Joint g

KD-SX998R,KD-SX997R

(No.49819)1-7

2.1.8 Removing the CD mechanism assembly(See Fig. 11)

• Prior to performing the following procedure, remove the frontpanel assembly, front chassis assembly, heat sink, bottomcover, rear bracket, main board and CD mecha board.(1) Remove the three screws K.

Fig.112.1.9 Removing the front board

(See Figs. 12 to 14)• Prior to performing the following procedure, remove the front

panel assembly.(1) Remove the four screws L on the back side of the front

panel assembly.(2) Release the nine joints g.(3) Take out the front board.

Fig.12

Fig.13

Fig.14

K

K

CD mechanism assembly Top chassis

L

LLFront panel assembly

Joint g

Joint g

Joint g

Joint g

Rear cover

Front board

KD-SX998R,KD-SX997R

1-8 (No.49819)

2.2 CD Mechanism section2.2.1 Removing the top cover

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

backward to release the two joints a.

Fig.1

Fig.2

A

A

A

Joints aTop cover

Joints a

Top cover

KD-SX998R,KD-SX997R

(No.49819)1-9

2.2.2 Removing the connector board (See Figs.3 to 5)

CAUTION:Before disconnecting the flexible wire from the pickup, solderthe short-circuit point on the pickup. No observance of this in-struction may cause damage of the pickup.(1) Remove the screw B fixing the connector board.(2) Solder the short-circuit point on the pickup.(3) Disconnect the flexible wire from the pickup.(4) Move the connector board in the direction of the arrow to

release the two joints b.(5) Unsolder the wires on the connector board if necessary.

CAUTION:Unsolder the short-circuit point after reassembling.

Fig.3

Fig.4

Fig.5

B

Connector board

PickupShort-circuit pointJoints b

Wires

Pickup

Short-circuit point(Soldering)

Flexible wire

B

Flexible wire

Connector board

Frame

KD-SX998R,KD-SX997R

1-10 (No.49819)

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

(1) Extend the two tabs c of the feed sw. holder and pull outthe switch.

(2) Unsolder the DET switch wire if necessary.

Fig.6

Fig.7

Connectorboard

DETswitch

Pickup

DET switch Tab c

Tab c

DET switch wire

Feed sw. holder

KD-SX998R,KD-SX997R

(No.49819)1-11

2.2.4 Removing the chassis unit (See Figs.8 and 9)

• Prior to performing the following procedure, remove the topcover and connector board.(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 dif-ferent. Handle them with care.

• When reassembling, make sure that the three shaftson the underside of the chassis unit are inserted to thedampers certainly.

Fig.8

Fig.9

Suspension spring (L)

Suspension spring (L)Suspension spring (R)

Suspension spring (R)

Chassis unit

Frame

Chassis unit

Frame

Shafts

Shaft

Damper

Damper

Damper

KD-SX998R,KD-SX997R

1-12 (No.49819)

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

• Prior to performing the following procedure, remove the topcover.(1) Remove the clamper arm spring.(2) Move the clamper assembly in the direction of the arrow to

release the two joints d.

Fig.10

Fig.11

Clamper arm spring

Chassis rivet assembly

Joint dJoint d

Clamper assembly

Clamper arm spring

Clamper assembly

Joint d

Joint d


KD-SX998R,KD-SX997R

(No.49819)1-13

2.2.6 Removing the loading / feed motor assembly (See Figs.12 and 13)

• Prior to performing the following procedure, remove the topcover, connector board and chassis unit.(1) Remove the screw C and move the loading / feed motor as-

sembly in the direction of the arrow to remove it from thechassis rivet assembly.

(2) Disconnect the wire from the loading / feed motor assemblyif necessary.CAUTION:

When reassembling, connect the wire from the loading /feed motor assembly to the frame as shown in Fig.12.

Fig.12

Fig.13

Loading / feed motor assembly

Loading / feed motor assembly

C

KD-SX998R,KD-SX997R

1-14 (No.49819)

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

• Prior to performing the following procedure, remove the topcover, 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 feedsw. holder in the direction of the arrow. The joint g of thepickup 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 joint fof the feed rack to the switch of the feed sw. holder correct-ly.

(3) As the feed sw. holder is temporarily attached to the pickupunit, set to the gear of the joint g and to the bending part ofthe chassis (joint h) at a time.CAUTION:

Make sure that the part i on the underside of the feedrack is certainly inserted to the slot j of the change locklever.

(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.

Fig.14

Fig.15

Fig.16

Fig.17

Fig.18

Feed sw. holder

E

D

Joint g

Joint f

Part ePickup unitPu. shaft holder

Pu. shaft

Feed sw. holder

Part e

Pickup unit

Feed rack

Feed sw. holder

DE

Joint f

Pu. shaft holder

Pu. shaft

Pickup unit

Joint h

Part i

Slot jJoint g

F Feed rack

Pickup unit

Joint f

Joint g

Feed rack

Pickup unit

Feed sw. holder

KD-SX998R,KD-SX997R

(No.49819)1-15

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

• Prior to performing the following procedure, remove the topcover, 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 triggerarm into the part p and q at the slot of the chassis rivetassembly respectively and join the joint k at a time.

Fig.19

Fig.20

2.2.10 Removing the top plate assembly (See Fig.21)

• Prior to performing the following procedure, remove the topcover, 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.

Fig.21

Joint k

Trigger arm


Trigger arm

Chassisrivet

assembly

Part p

Part m

Part n

Part q

Top plate assembly

Joints r

s

H

KD-SX998R,KD-SX997R

1-16 (No.49819)

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

• Prior to performing the following procedure, remove the topplate 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 the 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.

Fig.22

Fig.23

Mode sw.

Select lock arm

Joint tLink plate

Joint us

Top plate

Top plate

Select lock arm

Select lock arm spring

Select lock arm

Link plate

Joints v

Hook w

KD-SX998R,KD-SX997R

(No.49819)1-17

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 won the top plate.

(2) Set the other longer end of the select lock arm spring to theboss x on the underside of the select lock arm, and join theselect lock arm to the slots (joint v). Turn the select lockarm as shown in the figure.

(3) Reattach the mode sw. while setting the part t to the firstpeak of the link plate gear, and join the joint u.CAUTION:

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

Fig.24

Fig.25

Fig.26

Select lock arm

Hook w

Boss x

Select lock arm spring

Joint vJoint v

Link plate

Joint t

Point z

Point y

Select lock arm

Mode sw.

Joint t

Joint uLink plate

KD-SX998R,KD-SX997R

1-18 (No.49819)

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

• Prior to performing the following procedure, remove the topplate assembly.(1) Bring up the select arm R to release from the link plate

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

(2) Move the link plate in the direction of the arrow to releasethe joint d'. Remove the link plate spring at the same time.REFERENCE:

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

Fig.27

Fig.28

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) Reattach the link plate to the link plate spring while joining

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 topplate 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 prop-erly.

Fig.29

Fig.30

Joint rLink plate

Joint b'

Joint b'

Joint c'

Select arm R

Joint a'

Top plate

Link plate

Link plate spring

Joint d'

Select arm R Joint c'

Joint d'

Link plate spring

Joint b'

Joint b' Joint a'

Link plate

Joint a'

Point e'Point f'

KD-SX998R,KD-SX997R

(No.49819)1-19

2.2.15 Removing the loading roller assembly (See Figs.31 to 33)

• Prior to performing the following procedure, remove theclamper assembly and top plate assembly.(1) Push inward the loading roller assembly on the gear side

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

(2) Detach the loading roller assembly from the slot of the jointh' of the lock arm rivet assembly.

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

Remove the roller guide and the HL washer from the shaftof 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 slotof the L side plate.

(5) Extend the lock arm rivet assembly outward and releasethe joint j' from the boss of the chassis rivet assembly. Theroller guide springs on both sides come off at the sametime.CAUTION:

When reassembling, reattach the left and right rollerguide springs to the lock arm rivet assembly before reat-taching the lock arm rivet assembly to the chassis rivetassembly. Make sure to fit the part k' of the roller guidespring inside of the roller guide. (Refer to Fig.34.)

Fig.31

Fig.32

Fig.33

Fig.34

Roller guide

Roller guide spring

Roller guide spring

Roller guide spring

Roller guide

HL washer

Loading roller assembly


Joint h'

Joint g'

Lock arm rivet assembly

Roller guide spring

Roller guide spring


Loading roller assemblyPart k'

Roller guide spring

Boss

L side plate

Joint i'Joint j'

Lock arm rivet assembly

J


Roller guide

HL washer

Lock arm rivet assembly Roller guide spring

Loading roller

Roller shaft assembly

KD-SX998R,KD-SX997R

1-20 (No.49819)

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

• Prior to performing the following procedure, remove the topcover, 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 brack-et.

(2) Pull out the loading gear 5.

Fig.35

Fig.36

K Loading gear bracket

Loading gear 6

Loading gear 5

Loading gear 3

KLoading gear bracket

Loading gear 6

Loading gear 5 Loading gear 7

KD-SX998R,KD-SX997R

(No.49819)1-21

2.2.17 Removing the gears (See Figs.37 to 40)

• Prior to performing the following procedure, remove the topcover, 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 thechassis rivet assembly. (See Fig.37.)

(3) Detach the loading plate assembly upward from the chas-sis rivet assembly while releasing the joint n'. Remove theslide hook and loading plate spring from the loading plateassembly.

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

(5) Remove the E ring and washer attaching the change gear2.

(6) The change gear 2, change gear spring and adjustingwasher 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 rivetassembly upward. (See Fig.38.)

(9) Detach the loading gear plate rivet assembly from the shaftof the chassis rivet assembly upward while releasing thejoint p'. (See Figs.38 and 40.)

(10) Pull out the loading gear 4.

Fig.37

Fig.38

Fig.39

Fig.40

Slot m'

Slot m'

Joint n'

Feed gear

Loading plate assembly

L side plate


Joint p'

Loading gear 4

Loading gear 2

Loading gear 1

Change gear 2

Loading gear plate rivet assembly

E ring

Shafts

Change plate rivet assembly

Shaft


Loading plate assembly

Loading plate spring

Chassis rivet assemblySlot m'

Slot m'

Joint n'

L side plate

Slide hook

Loading gear 2

Loading gear 4

Change gear 2

Loading gear 1

E ring

Washer

Change gearspring

Loading gear plate rivetassembly


Adjustingwasher

Change plate rivet assembly

Change lock lever

KD-SX998R,KD-SX997R

1-22 (No.49819)

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

• Prior to performing the following procedure, remove the topcover, connector board, chassis unit and clamper assembly.(1) Remove 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.

Fig.41

Fig.42

L

Turn table

L

Turn table

Spindle motor

KD-SX998R,KD-SX997R

(No.49819)1-23

SECTION 3Adjustment

3.1 Adjustment method Test instruments required for adjustment 1. Digital oscilloscope (100MHz) 2. AM Standard signal generator 3. FM Standard signal generator 4. Stereo modulator 5. Electric voltmeter 6. Digital tester 7. Tracking offset meter 8. Test Disc JVC :CTS-1000 9. Extension cable for check EXTSH002-22P 1

Standard measuring conditions Power supply voltage DC14.4V(11~16V) Load impedance 20Kohm(2 Speakers connection) Output Level Line out 2.0V (Vol. MAX)

How to connect the extension cable for adjusting

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

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

Frequency BandFM 87.5MHz ~ 108.0MHz MW 522kHz ~ 1620kHzLW 144kHz ~ 279kHz

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

EXTSH002-22P

Extension cable

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

Rear bracket

KD-SX998R,KD-SX997R

1-24 (No.49819)

3.2 Flow of functional operation unit TOC read

When the pickup correctly movesto the inner area of the disc

v

Microprocessorcommands

FMOTC94A14FA "40"

FEED MOTOR+TERMINALIC681 "4"

REST SW

When correctly focused

Focus Servo Loop ON

Power ONSet Function CD

Disc inserted

Pickup feed to the inner area

YES

Laser emitted

Focus search

YES

Disc rotates

RF signal eye-patternremains closed

Tracking loop closed

RF signal eye-patternopens

TOC read out

Jump to the first track

Play

When the laser diode correctlyemits

Microprocessorcommands

SELTC94A14FA"38"

LDCN601"15"

"No disc"display

When the disc correctly rotatesMicroprocessorcommands

DMOTC94A14FA "41"

Spindlemotor(-)IC681 "7"

Tracking Servo Loop ON

RF signal

Rough Servo Mode

CLV Servo Mode(Program Area)

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

$83 $82 $81

0V

6V4V

2V

OFF

ON

3.3VHi-Z

FEOTA2157 "15" 2.2V

$84

3.3V0V

4V

0V

$84 $86 $ A200

3.3V2.2V0V

6V3.22V

RoughServoAcceleration Servo CLV

0.5 Sec 0.5 Sec

KD-SX998R,KD-SX997R

(No.49819)1-25

3.3 Troubleshooting3.3.1 Feed section

3.3.2 Focus section

3.3.3 Spindle section

3.3.4 Tracking section

Is the voltage output atIC621 pin "40" 5V or 0V?

Is the wiring for IC681pin 27?

Is 3.3V present at IC681pin "20"?

Check CD 8Vand 5V.Check the vicinity of

IC621.

Check the feed motorconnection wiring.

Is 6V or 2V present atIC681 "4" and "5"?

Check IC601.

Is 4V present at bothsides of the feed motor?

Check the feed motor.

YES

YES

NO YES NO

YES

NO

NO

NO

YES

NO

YES

YES

When the lens ismoving:

4V

Does the S-searchwaveform appear atIC681 pins "8" and "9"?

Check the circuits inthe vicinity of IC681pins "8","9"and"15".

Check the pickup andits connections

NO

NO

NO

NO

YESYESYES

YES

YES

Is the disk rotated?

Does the RF signalappear at RF test point?

Is the RF waveform at RFtest point distorted?

Proceed to the Trackingsection

Is 4V present at IC681pins "6" and "7"?

Check the spindle motorand its wiring

Check the circuits in thevicinity of IC681 "19"~"24" or the pickup

Is 4V present at IC621pins "41" ?

Check IC621 andIC681.

Check the vicinity ofIC561.

NO

YES

YES YES

When the disc is rotatedat first:

Approx. 1.2V

Is the tracking error signaloutput at IC601 "11"?

Check IC621.

Check the circuit in thevicinity of IC501 pins"2"~"7".

Check the pickup andits connections

KD-SX998R,KD-SX997R

1-26 (No.49819)

3.4 Maintenance of laser pickup(1) Cleaning the pick up lens

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

(2) Life of the laser diodeWhen the life of the laser diode has expired, the followingsymptoms will appear.• The level of RF output (EFM output:ampli tude of eye

pattern) will be low.

(3) Semi-fixed resistor on the APC PC boardThe semi-fixed resistor on the APC printed circuit boardwhich is attached to the pickup is used to adjust the laserpower.Since this adjustment should be performed to matchthe characteristics of the whole optical block, do not touchthe semi-fixed resistor. If the laser power is lower than the specified value,the laserdiode is almost worn out, and the laser pickup should be re-placed. If the semi-fixed resistor is adjusted while the pick-up is functioning normally,the laser pickup may bedamaged due to excessive current.

3.5 Replacement of laser pickup

Is RF output1.0 0.35Vp-p? Replace it.

NO

YES

O.K

Turn off the power switch and,disconnect thepower 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.

KD-SX998R,KD-SX997R

(No.49819)1-27

SECTION 4Description of major ICs

4.1 BA3220FV-X (IC361,IC381) : Line out amp• Pin layout

• Block diagram

1 7

8

3220

14

+ -+ - - +

+ -

-

-

+

+

REFRREFL

FILTER

891011121314

1 2 3 4 5 6 7INRNFRFILNFLCL+ Vcc INL

CL- LGND OUTL OUTR RGND CR- CR+

KD-SX998R,KD-SX997R

1-28 (No.49819)

4.2 BR24C01AFV-W-X (IC502) : EEPROM• Pin layout

• Block diagram

• Pin function

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

A0 A1 A2 GND

Vcc WP SCL SDA

A0

A1

A2

GND

1

2

3

4

Vcc

WP

SCL

SDA

8

7

6

5

1kbit EEPROM ARRAY

7bit

ADDRESSDECODER

SLAVE/WORDADDRESS REGISTER7bit

8bit

DATAREGISTER

CONTROL LOGIC

HIGH VOLTAGE GEN. Vcc LEVEL DETECT

ACK

START STOP

Pin name I/O DescriptionVcc - Power supply

GND - Ground (0v)A0,A1,A2 IN Slave address set

SCL IN Serial clock inputSDA IN / OUT Slave and word addressserial data input serial data output *1WP IN Write protect input

KD-SX998R,KD-SX997R

(No.49819)1-29

4.3 BR24C32F-X (IC771) : EEPROM• Pin layout • Pin function

• Block diagram

4.4 IC-PST600M/G/-W (IC702) : System reset• Block diagram

Vdd WPIN SCL SDA

A0 A1 A2 GND

Symbol I/O FunctionVdd - Power supply.GND - GND

A0,A1,A2 I No use connect to GND.SCL I Serial clock input.SDA I/O Serial data I/O of slave and word address.WPIN I Write protect terminal.

8 Vdd

7 WPIN

6 SCL

5 SDA

A0 1

A1 2

A2 3

GND 4

16kbit EEPROM allay

11bit

11bit

8bit

Addressdecoder

Slave WordAddress resister

Dataresister

START STOP

ACK

Control circuit

High voltage osc circuit Power supplyvoltage det.

IN

Vout

GND

1

3

2

OP1

Co1

KD-SX998R,KD-SX997R

1-30 (No.49819)

4.5 HA13164A (IC901) : Regulator• Pin layout

• Block diagram

• Pin function

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Pin No. Symbol Function1 EXTOUT Output voltage is VCC-1 V when M or H level applied to CTRL pin.2 ANTOUT Output voltage is VCC-1 V when M or H level to CTRL pin and H level to ANT-CTRL.3 ACCIN Connected to ACC.4 VDDOUT Regular 5.7V.5 SW5VOUT Output voltage is 5V when M or H level applied to CTRL pin.6 COMPOUT Output for ACC detector.7 ANT CTRL L:ANT output OFF H:ANT output ON8 VCC Connected to VCC.9 BATT DET Low battery detect.

10 AUDIO OUT Output voltage is 9V when M or H level applied to CTRL pin.11 CTRL L:BIAS OFF M:BIAS ON H:CD ON12 CD OUT Output voltage is 8V when H level applied to CTRL pin.13 ILM AJ Adjustment pin for ILM output voltage.14 ILM OUT Output voltage is 10V when M or H level applied to CTRL pin.15 GND Connected to GND.

2

1

11

12

10

15 13

14

5

4

6

38

9

7

ILM AJGND GND

C610u

C50.1u

C40.1u

C30.1u

AUDIO OUT

CD OUT

CTRL

ANT CTRL

EXT OUT

ANT OUT

VCC ACC

Surge Protector

BIAS TSD

C1 100u

C2 0.1u

+B

ACC

BATT.DET OUT

COMPOUT

VDD OUT

SW5VOUT

ILMOUT

C70.1u

C80.1u

R1

UNIT R: C:F

note1) TAB (header of IC)connected to GND

TAB

KD-SX998R,KD-SX997R

(No.49819)1-31

4.6 HD74HC126FP-X (IC801) : Buffer• Pin layout • Pin function

Note:H:High levelL:Low levelX:Irrelevant Z:Off(High-impedance)State a 3-state input

• Block diagram

Note:CL includes probe and jig capacitance

1 2 3 4 5 6 7

1C1A1Y2C2A2Y

GND

VCC4C4A4Y3C3A3Y

14 13 12 11 10 9 8

Input OutputC A YL X ZH L HH H L

Vcc Vcc

Input

See

Func

tion

Tabl

e

1A2A3A4A1C2C3C4C

1Y

2Y

3Y

4Y

Output

Output

Output

Output

Sample as Load Circuit 1



1k

1k

S1

CL

KD-SX998R,KD-SX997R

1-32 (No.49819)

4.7 HD74HCT126T-X : (IC503) Buffer• Pin arrangement • Pin function

H : High levelL : Low levelX : IrrelevantZ : Off (Hhigh-impedance)state of a 3-stage output

• Block diagram

14

13

12

11

10

9

8

1

2

3

4

5

6

7

Vcc

4C

4A

4Y

3C

3A

3Y

1C

1A

1Y

2C

2A

2Y

GND

Input OutputC A YL X ZH L LH H H

1Y

2Y

3Y

4Y

1A

1C

2A

2C

3A

3C

4A

4C

KD-SX998R,KD-SX997R

(No.49819)1-33

4.8 LC75873NW (IC601) : LCD Driver• Pin layout

• Block diagram

• Pin function

60 41

1 20

40

21

61

80

VDD1

VDD2

INH

OSC CLOCKGENERATOR

COMONDRIVER SEGMENT DRIVER

SHIFT REGISTOR

ADDRESSDETECTOR

VSS

VDD

DI

CL

CE

S5 S4/P

4S3

/P3

S2/P

2S1

/P1

S62

S66

CO

M1

CO

M2

CO

M3

Pin No. Pin name I/O Description79,80

1,2,3 to 66S1/P1 to S4/P4

S5 to S68O Segment outouts for displaying the display data transferred by serial data input.

The S1/P1 to S4/P4 pins can be used as generalpurpose output ports under serial data control.67,78,69 COM1,COM2

COM3O Common driver outputs.

The frame frequency f0 is given by : f0 = (FOSC/384)Hz.74 OSC I/O Oscillator connection

An oscillator circuit is formed by connecting an external resistor and capacitor to this pin.76,77,78 CE

CLDI

III

Serial data transfer inputs.Connected to the controller.CE:Chip enableCL:Synchronization clockDI:Transfer data

75 INH I Display off control input• INH= "L"(VSS) ---Display forced off

S1/P1 to S4/P4 = "L" (These pins are forcibly set to the segment output port function and held at the low level.) S5 to S68 = "L" COM1 to COM3"L"

• INH = "H"(HDD)---Display onHowever, serial data transfer is possible when the display is forced off by this pin.

71 VDD1 I Used for applying the LCD drive 2/3 bias voltage externally. Must be connected to VDD2 when a 1/2 bias drive scheme is used.

72 VDD2 I Used for applying the LCD drive 1/3 bias voltage externally. Must be connected to VDD1 when a 1/2 bias drive scheme is used.

70 VDD - Power supply connection. Provide a voltage of between 3.0 and 6.0V.73 VSS - Power supply connection. Connect to ground.

KD-SX998R,KD-SX997R

1-34 (No.49819)

4.9 LA47505 (IC301) : Power amp.• Block diagram

Muting &On Time Control

Circuit

protective circuit

Mutecircuit

Protectivecircuit

RippleFilter

Stand by Switch

11

16

14

13

25

15

10

4

1

12

22

17

19

18

21

23

24

2

3

5

8

7

9

206

KD-SX998R,KD-SX997R

(No.49819)1-35

• Pin layout

• Pin function

AC C

ON

T1G

ND

1O

UTF

R-

STBY

OU

TFR

+Vc

c1/2

OU

TRR

-G

ND

2O

UTR

R+

VREF

INR

RIN

FRSG

ND

INFL

INR

LO

NTI

ME

OU

TRL+

GN

D3

OU

TRL-

Vcc3

/4O

UTF

L+M

UTE

OU

TFL-

GN

D4

NC

Pin No. Symbol Function1 AC CONT1 Header of IC2 GND1 Power GND3 OUTFR- Outpur(-) for front Rch4 STBY Stand by input5 OUTFR+ Output (+) for front Rch6 Vcc1/2 Power input7 OUTRR- Output (-) for rear Rch8 GND2 Power GND9 OUTRR+ Output (+) for rear Rch

10 VREF Ripple filter11 INRR Rear Rch input12 INFR Front Rch input13 SGND Signal GND14 INFL Front Lch input15 INRL Rear Lch input16 ONTIME Power on time control17 OUTRL+ Output (+) for rear Lch18 GND3 Power GND19 OUTRL- Output (-) for rear Lch20 Vcc3/4 Power input21 OUTFL+ Output (+) for front22 MUTE Muting control input23 OUTFL- Output (-) for front24 GND4 Power GND25 NC No connection

KD-SX998R,KD-SX997R

1-36 (No.49819)

4.10 LA6579H-X (IC681) : 4-Channel bridge driver • Pin layout & Block diagram

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

FR FR

VIN1

VIN1-B

VIN1+B

S-GND

VIN1-SW

MUTE

VREFIN

VCCS

3.3VREG

REGIN

VIN2G

VIN2

VIN3G

VIN3

FR

VIN1-A

VIN1+A

VCCP1

VO+

VO-

VO2+

VO2-

VO3+

VO3-

VO4+

VO4-

VCCP2

VIN4

VIN4G

FR

+-

+-

+-

[H]

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

33k11k Signal system

power supply

All outputs ON/OFF

H : ONL : OFF

MUTE

Level shiftLevel shift

Power system GND

Signal systempower supply

3.3VREG (External:PTP Tr)

+-Power system

GNDLevel shift

Level shift

+-

33k11k

+-

+-

+-

11k33k

33k11k

KD-SX998R,KD-SX997R

(No.49819)1-37

• Pin function

Pin No. Symbol Function1 VIN1-A CH1 input AMP_inverted input2 VIN1+A CH1 input AMP_non-inverted input3 VCCP1 CH1 and CH2 power stage power supply4 VO1+ Output pin(+)for channel 15 VO1- CH1 output pin (-) for channel 16 VO2+ Output pin(+)for channel 27 VO2- Output pin(-)for channel 28 VO3+ Output pin(+)for channel 39 VO3- Output pin(-)for channel 3

10 VO4+ Output pin(+)for channel 411 VO4- Output pin(-)for channel 412 VCCP2 CH3 and CH4 power stage powr supply13 VIN4 Input pin for channel 414 VIN4G Input pin for channel 4(for gain adjustment)15 VIN3 Input pin for channel 316 VIN3G Input pin for channel 3(for gain adjustment)17 VIN2 Input pin for channel 218 VIN2G Input pin for channel 2(for gain adjustment)19 REGIN External PNP transistor base connection20 3.3VREG 3.3VREG output pin external PNP transistor,collector connection21 VCCS Signal system GND22 VREFIN Reference voltage application pin23 MUTE Output ON/OFF pin24 VIN1_SW CH1 input OP AMP_changeover pin25 S_GND Signal system GND26 VIN1+B CH1 AMP_B non-inverted input pin27 VIN1-B CH1 AMP_B inverted input pin28 VIN1 CH1 input pin input OP_AMP output pin

KD-SX998R,KD-SX997R

1-38 (No.49819)

4.11 LP61L1024S-12-X (IC653) : SRAM• Pin layout • Pin function

4.12 NJM4565M-WE (IC251) : CD L.P.F.

NC

A16

A14

A12

A7

A6

A5

A4

A3

A2

A1

A0

I/O1

I/O2

I/O3

VSS

VDD

A15

NC(CE2)

WE

A13

A8

A9

A11

OE

A10

CS1

I/O8

I/O7

I/O6

I/O5

I/O4

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

Pin No. Symbol I/O Function1 NC - Not connect2 A16 I Address input3 A14 I Address input4 A12 I Address input

5~12 A7~A0 I Address inputs13~15 I/O1~I/O3 I/O Data inputs/outputs

16 VSS - Ground17~21 I/O4~I/O8 I/O Data inputs/outputs

22 CS1 I Chip select input23 A10 I Address input24 OE I Output enable input25 A11 I Address input

26,27 A9,A8 I Address inputs28 A13 I Address input29 WE I Write enable input30 NC(CE2) - Not connect31 A15 I Address input32 VDD - Power supply

8

7

6

54

3

2

1 V+

B OUTPUT

B INPUT

B INPUT

A INPUT

A INPUT

A OUTPUT

-

V- +

+ -

KD-SX998R,KD-SX997R

(No.49819)1-39

4.13 NJM4565V-X (IC572) : Dual operational amplifier• Pin layout & Pin function

4.14 NJU7241F25-X (IC651) : Regulator• Pin layout

• Block diagram

4.15 NJU7241F33-X (IC504) : Voltage regulator• Pin layout

A- +

B- +

8

7

6

5

1

2

3

4

12345678

AOUTPUTA-INPUTA+INPUTVB+INPUTB-INPUTB OUTPUTV

GND 1

VIN 2

VOUT 3

5 STB

4 NC

Short protect

3 VOUT

1 GND

Vref

VIN 2

STB 5

GND 1

1

2

3

5

4

PIN FUNCTION1. GND2. VIN3. VOUT4. +NC5. STB

KD-SX998R,KD-SX997R

1-40 (No.49819)

4.16 PCM1716E-X (IC571) : D/A converter• Pin layout

• Block diagram

• Pin function

1 14

28 15

BCK VoutL

Vcc2

L

Vcc2

R

AGN

D2L

AGN

D2R

EXTL

EXTR

ZERO

VoutR

Serial

Input

8X Oversampling

Digital Filter

with

Function Controller

SCK

Crystal OSC

XTI XTO CLKO Vcc1 VccAGND1 DGND

Power Supply

Open drain

Low-passFilter

Low-passFilter

BPZ-Cont

Mult-level

Delta-Sigma

Modulator

DAC

DAC

I/F

LBCK

DATA

ML/llS

Mode

I/F

Control

MC/DM1MD/DM0

CS/WOMODEMUTE

RST

Pin No. Symbol I/O Function

1 LRCK I LRCK clock input2 DATA I Serial audio data input3 BCK I Bit clock input for serial audio data4 CLKO O Buffered output of system clock5 XTI I Oscillator input / External clock input6 XTO O Oscillator output7 DGND - Digital ground8 VDD - Digital power +5V9 VDD2R - Analog power +5V

10 AGND2R - Analog ground11 EXTR O Rch common pin of analog output amp12 NC - Non connection13 VOUTR O Rch analog voltage output of audio signal14 AGND1 - Analog ground15 Vcc1 - Analog power +5V

16 VOUTL O Lch analog voltage output of audio signal17 NC - Non connection18 EXTL O Lch common pin of analog output amp19 AGND2L - Analog ground20 Vcc2L - Analog power +5V21 ZERO O Zero data flag22 RST I Reset23 CS/IWO I Chip select / Input format selection24 MODE I Mode control select25 MUTE I Mute control26 MD/DM0 I Mode control, Data /

De-emphasis selection 127 MC/DM1 I Mode control, BCK /

De-emphasis selection 228 ML/IIS I Mode control, WDCK /

Input format selection


KD-SX998R,KD-SX997R

(No.49819)1-41

4.17 RPM6938-SV4 (IC602) : Remote control receiver

• Block diagram

4.18 TDA7404D-X (IC161) : Car radio signal processor• Pin layout

• Block diagram

AMPAGC

DetectorBPFI/Vconversion

PD

Vcc

Comp

22kohm

magnetic shield

VDD

OUT

GND

fortrimming circuit

3

1

2

1

14

28

15

MIX

Gai

n/Au

to Z

ero

Mix

ing

Stag

e

Loud

ness

Volu

me

Soft

Mut

e

Treb

le

Bass

Inpu

t Mul

tiple

xer

Mono/Beep

Beep

Supply

Digital Control I C-Bus

Zero Cross

Mono Fader

Mono Fader

Mono Fader

Mono Fader

Mono Fader

Mono Fader

2

KD-SX998R,KD-SX997R

1-42 (No.49819)

4.19 SAA6579T-X (IC71) : RDS detecter• Pin layout

• Block diagram

• Pin function

QUAL

DATA

Vref

MUX

Vdd

GND

CIN

SCOUT

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

CLK

T57

OSCO

OSCI

Vdd

GND

TEST

MODE

Pin No. Symbol Description1 QUAL Quality indication output2 DATA RDS data output3 Vref Reference voltage output (0.5VDDA)4 MUX Multiolex signal input5 Vdd +5V supply voltage for analog part6 GND Ground for analog part (0V)7 CIN Sub carrier input to comparator8 SCOUT Sub carrier output of reconstruction filter9 MODE Oscillator mode / test control input

10 TEST Test enable input11 GND Ground for digital part (0V)12 Vdd +5V supply voltage for digital part13 OSCI Oscillator input14 OSCO Oscillator output15 T57 57 kHz clock signal output16 CLK RDS clock output

ANTI-ALIASINGFILTER

CLOCKEDCOMPARATOR

COSTAS LOOPVARIABLE ANDFIXED DIVIDER

57 kHzBAND PASS(8th ORDER)

RECONSTRUCTIONFILTER

OSCILLATORANDDIVIDER

BIPHASESYMBOLDECODER

TEST LOGIC AND OUTPUTSELECTOR SWITCH

CLOCKREGERATION AND SYNC

REFERENCEVOLTAGE

DIFFERENTIALDECODER

QUALITY BITGENERATOR

8

4

7

5VP1

3

6 11

15

15

2

1

121413

9 10

KD-SX998R,KD-SX997R

(No.49819)1-43

4.20 TB2118F-X (IC31) : PLL• Terminal Layout

• Block diagram

• Pin Function

1 2 3 4 5 6 7 8 9 10 11 12

24 23 22 21 20 19 18 17 16 15 14 131

24

2

15

16

13

3

4

5

6

7 8 9 10 11 12 14 17 21 23

18

19

22

20

Buff.ON/OFF

OSC circuit

AMP

AMP

AMP

Reference Counter PhaseComparator

Prescaler 4-bitSwallow counter

12-bitProgrammable counter

Constantpower supply voltage

AM CP.

switch

switch

RF

Vt

FM cp

+ -

+ -

a-gndvccd-gndvddvdd2out-2out-1I/O -2I/O -1SL

osc

XO

XI

FM VCO

AMVCO

IFC

CE

DIN

CK

DOUT

20-bit BINARY COUNTER

SerialInterface

Resistor 1Resistor 2

22-bit40bit shift register

I/O PORT OUTPUT PORTVdd

Vcc

Pin No. Symbol I/O Function Pin

No. Symbol I/O Function

1 XOUT O Crystal oscillator pin 13 IFC I IF signal input2 OSC - Non connect 14 VDD - Power pins for digital block 3 CE I Chip enable input 15 FMIN I FM band local signal input4 DI I Serial data input 16 AMIN I AM band local signal input5 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 FM7 SR O Register control pin 19 Vt - Tuning voltage biased to 2.5V.8 I/01 I/O I/O ports 20 AMCP 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 pin11 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

KD-SX998R,KD-SX997R

1-44 (No.49819)

4.21 TA2157FN-X (IC601) : RF amp• Pin layout

• Block diagram

24 ~ 13

1 ~ 12

12

11

10

9

8

7

6

5

4

3

2

1

13

14

15

16

17

18

19

20

21

22

23

24

20k 20k

15k

20k

20k

3k

180k

240k

240k15pF

15pF

40pF

40pF

10pF

60k

60k

22k

22k

94k

94k

14k

50k

20k20k

20k40k

50k

PEAK

15k

40k

2k

1.75k

1.3V

2k

1k

180k

3k

12k

12k

20k

40k

30k

10pF

50 A

BOTTOMPEAK

K

1

x0.5x2

x0.5x2

PIN SEL(APC SW)

TEB(TE BAL)

RFGC(AGC Gian)

TEB(TE BAL)VCTRLPIN

VCC APC ON -50% +12dB Normal mode(0dB)

HiZ APC ON 0% +6dB Normal mode(0dB)

GND APC OFF(LDO=H) 50% 0dB CD-RW mode

(+12dB)

KD-SX998R,KD-SX997R

(No.49819)1-45

• Pin function

Pin No. Symbol I/O Function1 VCC - 3.3V power supply pin2 FNI I Main-beam amp input pin3 FPI I Main-beam amp input pin4 TPI I Sub-beam amp input pin5 TNI I Sub-beam amp input pin6 MDI I Monitor photo diode amp input pin7 LDO O Laser diode amp output pin8 SEL I APC circuit ON/OFF control signal, laser diode (LDO) control signal input

or bottom/peak detection frequency change pin.

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~VCC10 TEN I Tracking error signal generation amp negative-phase input pin11 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 pin13 GVSW I AGC/FE/TE amp gain change pin

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

15 FEO O Focus error signal generation amp output pin16 FEN I Focus error signal generation amp negative-phase input pin17 RFRP O Signal amp output pin for track count

Combining RFRP signal and TEO signal with TC94A14F/FA configures tracking search system.18 1920

REIS RFGO RFGC

IOI

RF 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, PWMcarrier=88.2kHz)output fromTC94A14F/14FA *RFGC pin using RC-LPF and inputting DC.

*RFGC input voltage:GND~VCC21 AGCIN I RF signal amplitude adjustment amp input pin22 RFO O RF signal generation amp output pin23 RFI I RF signal generation amp input pin24 GND - GND pin

SEL

GND

Hiz

VCC

APCcircuit LDO

OFF Connected VCC through 1k resistor

ON Control signal output

ON Control signal output

VCC

GVSW Mode

GND

Hiz

CD-RW

Normal

KD-SX998R,KD-SX997R

1-46 (No.49819)

4.22 TC94A02F-005 (IC652) : DSP• Block diagram

SRAM

I/F

/CE

AD5

LRCKiA

BCKiA

SDi0

AD4

AD3

SDo

VDDT

AD2

/MiCK

MiDio

AD1

AD0

MiMD

/RESET

AD10

AD9

VDDT

AD8

AD7

AD6

REQ

VSS

AD13

AD14

/WR

AD16

AD15

io0

io1

VSS

AD11

AD12

CKS

TEST

P

VSSR

VRAR

Ro

VDAR

VDAL

Lo VRAL

VSSL

VSS

STAN

DBY

VDD

/oE

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

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

io2

io3

io4

VDD io5

io6

io7

VSSP PD

o

VCoi

VDD

P

CK0

VDD

X Xi Xo

VSSX

1615

1413

1211

109

87

65

43

21

3334

3536

3738

3940

4142

4344

4546

4748

Inte

rrupt

Con

trol

Tim

erFl

agG

ener

al

Out

put P

ort

Addr

ess

Cal

c.2s

ets

X-Po

inte

rre

gist

erY-

Poin

ter

regi

ster

C-P

oint

erre

gist

er

Bus

Switc

h

ERAM

2k w

ord

CR

OM

4k w

ord

*3YR

AM4k

wor

dXR

AM4k

wor

d

X-Bu

s

Y-Bu

s

PRAM

256w

ord

Prog

ram

Con

trol

PRO

M4k

*2+2

k=1

0kw

ord

40bi

t

Inst

ruct

ion

Dec

oder

Mic

roco

m.I/

FAu

dio.

I/F

roun

d &

limit

roun

d &

limit

MAC

ALU

A0A1

A2A3

MX

MY

MZ

AXAY

regi

ster

X0

X1

X

2Y0

Y1

Y2

I-Bus

DACDAC

General Input PortProg

.St

art

DIT

VC0Timing

Generator

KD-SX998R,KD-SX997R

(No.49819)1-47

• Pin functionPin No. Symbol I/O Description

1 /RESET I Hard reset input terminal(H:Normal op-eration L: Reset)

2 MiMD I Micon I/F mode select input terminal3 AD0 O External SRAM address output 0 termi-

nal4 AD1 O External SRAM address output 1 termi-

nal5 MiDio I/O Micon I/F data input/output terminal6 /MiCK I Micon I/F clock input terminal7 AD2 O External SRAM address output 2 termi-

nal8 VDDT - Digital power supply (3.3V)9 SDo O Data output terminal

10 AD3 O External SRAM address output 3 termi-nal

11 AD4 O External SRAM address output 4 termi-nal

12 SDi0 I Data input terminal 013 BCKiA I Bit clock input terminal A14 LRCKiA I LR clock input terminal A15 AD5 O External SRAM address output 5 termi-

nal16 CE O External SRAM chip enable terminal17 OE O External SRAM output enable terminal18 VDD - Digital power supply (2.5V)19 STANBY I Standby mode control terminal20 VSS - Digital GND21 VSSL - DAC Lch GND22 VRAL - DAC Lch reference voltage terminal23 LO O DAC Lch output terminal24 VDAL - DAC Rch power supply terminal(2.5V)25 VDAR - DAC Lch power supply terminal(2.5V)26 RO O DAC Rch output terminal27 VRAR - DAC Rch reference voltage terminal28 VSSR - DAC Rch GND29 TESTP I Test terminal30 CKS I VCO select terminal31 AD12 O External SRAM address output 12 ter-

minal32 AD11 O External SRAM address output 11 ter-


minal34 AD9 O External SRAM address output 9 termi-

nal35 VDDT - Digital power supply terminal (3.3V)36 AD8 O External SRAM address output 8 termi-



nal39 REQ O Squeeze request terminal to host40 VSS - Digital GND41 AD13 O External SRAM address output 13 ter-


minal

43 WR O External SRAM write signal44 AD16 O External SRAM address output 16 ter-


minal46 io0 I/O External SRAM data input/output 0 ter-


minal48 VSS - Digital GND49 io2 I/O External SRAM data input/output 2 ter-



minal52 VDD - Digital power supply (2.5V) terminal53 io5 I/O External SRAM data input/output 5 ter-



minal56 VSSP - VCO GND57 Pdo O PLL phase error detection signal output

terminal58 Vcoi I VCO control voltage input terminal59 VDDP - VCO power supply60 Cko O 16.934 MHz clock output terminal61 VDDX - Power supply (2.5V) terminal for oscil-

lator62 Xi I Connection terminal for oscillator (in-

put)63 Xo O Connection terminal for oscillator (out-

put)64 VSSX - GND for oscillator

Pin No. Symbol I/O Description

KD-SX998R,KD-SX997R

1-48 (No.49819)

4.23 TC94A14FA (IC621) : DSP & DAC• Pin layout & Block daiagram

• Pin function

LPF

1-bitDAC

Clockgenerator

Micro-controllerinterface

Audio outcircuit

Digitaloutput

Addresscircuit

Cor

rect

ion

circ

uit

16 kRAM

CLV servo

Digital equalizerautomatic

adjustment circuit

Servo control A/D

D/APWM

Synchronousguarantee

EFMdecoder

Sub code decoder

PLLTMAX

VCO

Dataslicer

ROM

RAM

49

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

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

161514131211101 2 3 4 5 6 7 8 9

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

Pin No Symbol I/O Descroption

1 BCK O Bit clock output pin.32fs48fsor 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.6 VDD3 - Digital 3.3V power supply voltage pin.7 VSS3 - 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

I/O General-purpose input / output pins.Input port at reset.14 UHSO15 PVDD3 - PLL-only 3.3V power supply voltage pin.16 PDO O EFM and PLCK phase difference signal output pin.

KD-SX998R,KD-SX997R

(No.49819)1-49

17 TMAX O TMAX detection result output pin.

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 AVSS3 - Analog GND pin.23 SLCO O DAC output pin for data slice level generation.24 RFI I RF signal input pin. Zin selectable by command.25 AVDD3 - Analog 3.3V power supply voltage pin.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 Tracking 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 AVDD3 - Analog 3.3V power supply voltage pin.40 FMO O Feed equalizer output pin.41 DMO O Disc equalizer output pin.42 VSS3 - Digital GND pin.43 VDD3 - Digital 3.3V power supply voltage pin.44 TESIN I Test input pin. Normally, fixed to "L".45 XVSS3 - System clock oscillator GND pin.46 XI I System clock oscillator input pin.47 XO O System clock oscillator output pin.48 XVDD3 - System clock oscillator 3.3V power supply voltage pin.49 DVSS3R - DA converter GND pin.50 RO O R-channel data forward output pin.51 DVDD3 - DA converter 3.3V power supply pin.52 DVR - Reference voltage pin.53 LO O L-channel data forward output pin.54 DVSS3L - DA converter GND pin.55 ZDET O 1 bit DA converter zero detection flag output pin.56 VSS5 - Microcontroller interface GND pin.57 BUS058 BUS1

I/O Microcontroller interface data I/O pins.59 BUS260 BUS361 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 VDD5 - Microcontroller interface 5V power supply pin.

Pin No Symbol I/O Descroption

TMAX Detection ResultLonger than fixed periodWithin fixed periodShorter than fixed period

"PVDD3""HiZ""AVSS3"

TMAX Output

KD-SX998R,KD-SX997R

1-50 (No.49819)

4.24 UPD784215AGC220 (IC701) : Main micon• Pin layout

• Pin function

1

~

25

75

~

51

100 ~ 76

26 ~ 50

Pin No. Symbol I/O Function1 CD RESET O Reset output for CD sub-micon2 CD MUTING I Muting request of CD sub-micon

3~8 NC - No use9 VDD - Micon power supply

10 X2 - No use11 X1 - No use12 VSS - GND13 XT2 - No use14 XT1 - No use15 RESET I System reset16 CDREQ I CD request from CD sub-micon17 BUS-INT I J-BUS int18 PS2 I Power save2 H:STOP mode19 STEERING O Steering remote signal output20 RDSSCK I RDS clock input21 RDSDA I RDS data input22 REMOCON I Remocon input23 AVDD - A/D converter power supply24 AVREF0 - A/D reference voltage25 VOL1 I Volume encoder pulse input 126 VOL2 I Volume encoder pulse input 227 KEY0 I Key input 028 KEY1 I Key input 129 KEY2 I Key input 230 LEVEL I Level meter input31 SQ I S. quality level input32 SM I S.METER input33 AVSS - GND

34,35 NC - No use36 AVREF - Reference voltage37 BUS-SI I J-BUS data input38 BUS-SO O J-BUS data output39 BUS-SCK I/O J-BUS clock input/output40 BUSSI/SO O J-BUS I/O selection Output:H Input:L41 LCDDA O Data output for LCD driver42 LCDCK O CLK output for LCD driver

KD-SX998R,KD-SX997R

(No.49819)1-51

43 LCDCE O CE for LCD driver44 BUZZER O Buzzer output45 EPROM-DI I I2C data input46 EPROM-DO O I2C data output47 EPROM-CLK O I2C clock output48 OPEN I Door open switch

49~52 NC - No use53 SD/ST I Station detector or stereo indicator input54 NC - No use55 MONO O Monaural selection output H:Monaural

56~60 NC - No use61 DETACH I Detach detect input H:Detach62 AFCK O AF check output63 SEEK/STOP O Auto seek and stop selecting output64 IFC CONT O IFC control output65 FM/AM O FM, AM band selecting output H:FM66 PLLCE O CE output for PLL IC67 PLLDA O Data output for PLL IC68 PLLCK O Clock output for PLL IC69 PLLDI I Data input from PLL IC70 TELMUTE I Telephone muting detection input71 NC - -72 VSS - GND73 DIMIN I Dimmer detector input L:Dimmer ON74 PS1 I Power save 1 L:ACC off75 POWER O Power ON/OFF control output H:Power on76 CDON O CD power supply control output H:CD power on77 MUTE O Muting output L:Muting on

78~80 NC - -81 VDD - Micon power supply82 NC - -83 VOLDA O Data output for E-volume IC84 VOLCL O Clock output for E-volume IC85 NC - -86 SUB MUTING O Muting control output for subwoofer

87~88 NC - -89 STAGE2 I Model selecting input90 STAGE1 I Model selecting input

91~93 NC - -94 TEST - For rewriting flash memory

95~100 NC - -


KD-SX998R,KD-SX997R

1-52 (No.49819)

4.25 UPD784225GK-629 (IC501) : CPU• Pin layout

• Pin function

60 ~ 41

1 ~ 20

40

~

21

61

~

80

Pin No. Symbol I/O Function1 TEMP IN I Temp. detection input terminal

2,3 - - No use4 AVSS - GND5 ADCONT O Output H level during power on. During stop mode:L6 - - -7 AVREF1 - 3.3V8 EPROMDI I EEPROM data input terminal9 EPROMDO O EEPROM data output terminal. Output H level during input

10 EPROMCK I/O EEPROM clock signal input/output terminal11 LCD CE O Chip enable output for LCD driver 12 LCD DA O Data output for LCD driver13 LCD CK O Clock output for LCD driver14 BUS I/O O JVC BUS input/output control terminal (negative)15 BUS I/O O JVC BUS input/output control terminal16 BUS SI I JVC BUS data input terminal17 BUS SO O JVC BUS data output terminal18 BUS SCK I/O JVC BUS clock input/output terminal19 BUSOUT O JVC BUS BUSOUT output terminal20 CD ON O Power supply (3.3V) control for CD21 CD REQ O CD mechanism power supply on request signal output terminal22 CD MUTE O CD mute signal output terminal23 - - -24 DSP RESET O CD DSP reset signal output terminal25 CCE O CD DSP chip enable output terminal26 BUCK O CD DSP data clock output terminal27 BUS3 I/O CD DSP data 3 input/output terminal28 BUS2 I/O CD DSP data 2 input/output terminal29 BUS1 I/O CD DSP data 1 input/output terminal30 BUS0 I/O CD DSP data 0 input/output terminal31 2X PLAY O RF frequency response select output of 2x speed playback32 RW SEL O CD-RW select output terminal (RW:L)33 VSS1 - GND34 LD O Loading signal output terminal (L:loading, H:eject)35 LD/FE O Loading/Feed select signal output terminal (H:LD, L:FE)36 MP3 DI I CD MP3 data input terminal37 MP3 DO O CD MP3 data output terminal

KD-SX998R,KD-SX997R

(No.49819)1-53

38 MP3 CK O Clock signal output terminal for CD MP3 data39 MP3 RESET O CD MP3 reset signal output terminal40 MP3 STB O CD MP3 standby signal output terminal (H:Standby)

41~43 - - -44 DAC ML O DAC mode control latch output terminal45 DAC MC O DAC mode control BCK output terminal46 DAC MD O DAC mode control data output terminal47 DAC CS O DAC chip select output terminal

48~51 - - No use52 DISC SEL I 8cm disc correspondence mode select terminal (correspondence:L)53 DAC SEL I DAC select mode input terminal 54 - - -55 TEST MODE I LCD/AD key/Remocon invalid select mode input terminal L:invalid56 MP3 SEL I MP3 select mode input terminal 57 8V DET I CD mechanism power supply detection terminal (L:8V on)58 REST I CD mechanism rest switch input terminal59 SW2 I CD mechanism SW2 input terminal60 RESET I Reset signal input terminal61 SW1 I CD mechanism SW1 input terminal62 B.DET I Backup power supply detection input terminal (H:Stop mode)63 P.DET I Main power off detection input terminal (H:HALT mode)64 BUS INT I JVC BUS communication start interrupt input terminal65 MP3 REQ I CD MP3 request signal input terminal66 - - -67 VSS0 - GND68 VDD1 - 3.3V69 X2 O Oscillator (6MHz)70 X1 I Oscillator (6MHz)71 VPP - GND72 XT2 O Open73 XT1 I GND74 VDD0 - 3.3V75 AVDD - Connect to ADCONT (Power supply for A/D convertor)76 IOP I Pickup IOP measurement input terminal77 KEY0 I Key input 0 (8bit A/D input) terminal78 KEY1 I Key input 1 (8bit A/D input) terminal79 KEY2 I Key input 2 (8bit A/D input) terminal80 KET3 I Key input 3 (8bit A/D input) terminal


KD-SX998R,KD-SX997R

1-54 (No.49819)

(No.49819)

AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,JapanVICTOR COMPANY OF JAPAN, LIMITED

200303WPCPrinted in Japan

KD-SX998R,KD-SX997R

service manual - diagramasde.comdiagramas.diagramasde.com/audio/jvc kd-sx998r...

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