JVC KD-LX10 30, KD-LX10 Service Manual

KD-LX10/KD-LX30

SERVICE MANUAL

CD RECEIVER

KD-LX10 KD-LX30

Area Suffix

J ---- Nortern America

VICTOR COMPANY OF JAPAN, LIMITED

MOBILE ELECTRONICS DIVISION,10-1,1Chome,Ohwatari-machi,Maebashi-city,Japan

(No.49537)

Printed in Japan 200002(O)

Contents

Safety precaution 1-2 Instructions 1-3~ Disassembly method 2-1 Adjustment method 2-4 Maintenance of laser pickup 2-14 Replacement of lase pickup 2-14 Extention code connecting method 2-15

This service manual is made from 100% recycled paper.

Functions of the mechanism under the servise mode 2-18 Flow of functional until TOC read 2-20 Description of major ICs 2-23 Block diagrams 2-39 Standard schematic diagrams 2-41 Printed circuit board 2-45,46 Parts list 3-1~7

No.49537

Feb. 2000

Safety precaution

CAUTION

!

CAUTION

!

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

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

KD-LX10/KD-LX30

Disassembly method

Removing the top chassis

(See Fig.1 to 5)

1.

Remove the two screws A attaching the bottom cover to the top chassis on the bottom of the body.

2.

Remove the two screws B attaching the top chassis on both sides of the body.

3.

Remove the two screws C and the two screw D attaching the heat sink on the left side of the body.

4.

Remove the two screws E and the screw F on the back of the body.

5.

Remove the two screws G on the upper side of the body.

6.

Move the top chassis upward and disconnect the CD mechanism connector from the main board connector by pulling it. Remove the top chassis from the body.

Bottom cover

A

Fig.1

Top chassis

E

Fig.4-1 (KD-LX30)

E

F

Heat sink

C

D

Fig.2

B

Top chassis

B

Fig.3

Top chassis

Fig.4-2 (KD-LX10)

G

Fig.5

2-1

KD-LX10/KD-LX30

Removing the main board assembly

(See Fig.6 and 7)

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

1.

Disconnect the flexible harness from connector CN701, the card wire from CN702 on the main board and the harness from CN503 and CN504 respectively.

CN504

CN503

CN701

2.

Remove the three screws H attaching the main board assembly to the bottom cover on the upper side of the body.

3.

Remove the screw I attaching the rear panel and the bottom cover on the back of the body. Move the main board in the direction of the arrow and release the two joints a. (At this point, the main board can be removed with the rear panel and the rear heat sink.)

4.

Remove the screw J and the two screws K attaching the rear heat sink on the back of the body.

5.

Remove the two screws L and the screw M attaching the rear panel. Now, the main board assembly will be removed.

ATTENTION:

when reassembling, correctly engage the switch S561 and S562 on the main board with the part e of the operation assembly (Refer to Fig.6-3).

H

Joint a

CN503

H

CN702

Fig.6-1 (KD-LX30)

Front panel assembly

H

Joint a

CN504

CN701

H

L

Rear panel

L

Rear panel

Rear heat sink

M

L

K

Fig.7-1 (KD-LX30)

I

Rear heat sink

L

K

Fig.7-2 (KD-LX10)

Joint a

J

I

Joint a

Main board

CN702

Fig.6-2 (KD-LX10)

S652

Fig.6-3

Front panel assembly

e

S651

2-2

Removing the front panel assembly

(See Fig.6,8 and 9)

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

1.

Disconnect the flexible harness from connector CN701 on the main board assembly.

2.

Remove the four screws N attaching the front panel assembly on both sides of the body. Remove the front panel toward the front.

CN503

H

Joint a

CN503

CN702

Fig.6-1 (KD-LX30)

Front panel assembly

KD-LX10/KD-LX30

CN504

CN701

H

Joint a

CN504

CN701

Front panel assembly

N

Fig.9

Removing the Front Board (See Fig.10)

H

Joint a

CN702

Front panel assembly

Fig.6-2 (KD-LX10)

Front panel assembly

N

CN701

Fig.8

Joints b

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

1.

Remove the four screws O attaching the front board on the back of the front panel assembly and release the eight joints b.

O

Joints b

Fig.10

2-3

KD-LX10/KD-LX30

Removing the lifter unit (See Fig.11)

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

1.

Disconnect the harness from connector CN503and CN504 on the main board.

2.

Remove the four screws P and detach the lifter unit from the bottom cover.

Removing the feed motor (L) (See Fig.12)

Prior to performing the following procedure, remove the lifter unit.

1.

Remove the washer attaching the clutch assembly and detach the clutch assembly from the shaft of the lifter unit.

2.

Remove the two screws Q attaching the feed motor (L).

CN503

P

CN504

P

Lifter unit assembly

Fig.11-1 (KD-LX30)

Removing the feed motor (R) (See Fig.13)

Prior to performing the following procedure, remove the lifter unit.

1.

Remove the washer attaching the clutch assembly and detach the clutch assembly from the shaft of the lifter unit.

2.

Remove the two screws R attaching the feed motor (R).

Clutch assembly

Lifter unit assembly

CN503

P

Clutch assembly

CN504

P

Lifter unit assembly

Fig.11-2 (KD-LX10)

Lifter unit assembly

2-4

Washer

Feed motor (R) assembly

R

Washer

Feed motor (L) assembly

Q

Fig.12Fig.13

Removing the operation assembly

(See Fig.14 to 17)

Prior to performing the following procedure, remove the top chassis assembly, the front panel assembly and the lifer unit.

KD-LX10/KD-LX30

1.

Remove the screws S attaching the right and left brackets which fix gears on both sides of the operation assembly.

2.

Remove the springs 5 and 6 from the operation assembly.

3.

Disconnect the card wire from connector CN702 on the main board and remove the operation assembly.

ATTENTION:

when reassembling, correctly engage the switch S561 and S562 on the main board and the right gear with the part e of the operation assembly.

Bracket (R)

S

Spring 5

Operation assembly

Fig.14

CN702

Bracket (L)

S

Spring 6

S652

Bracket (R)

S652

S651

Operation assembly e

Fig.15

Operation assembly

Operation assembly e

e

S651

Fig.16Fig.17

2-5

KD-LX10/KD-LX30

Removing the operation switch board

(See Fig.18 and 19)

Prior to performing the following procedure, remove the operation assembly.

1.

Remove the six screws T attaching the button panel on the operation assembly.

2.

Pull out the operation switch board from inside of the button panel.

Button panel

T

Button panel

Fig.18

Operation switch board

Removing the CD mechanism assembly

(See Fig.20)

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

1.

Remove the three screws U and the CD mechanism assembly from the top chassis.

U

Fig.19

U

CD mechanism assembly

Fig.20

2-6

KD-LX10/KD-LX30

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

Remove the screw N and the pickup cover attached

1. to the front bracket with the two double-sided tapes.

Unsolder the part f and g on the CD mechanism

2. control board.

Remove the stator fixing the CD mechanism control

3. board and the damper bracket (To remove the stator smoothly, pick up the center part).

Remove the screw F attaching the CD mechanism

4. control board.

Remove the CD mechanism control board in the

5. direction of the arrow while releasing it from the two damper bracket slots i and the front bracket slot j.

Disconnect the flexible wire from connector on the

6. pickup unit.

ATTENTION:

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

Pickup cover

F

Double-sided tape

FD gear

Damper bracket

N

I

Front bracket

Pickup unit

Fig.1

Fig.2

I

f

j

Flexible wire

I

i

CD mechanism control board

Shift the lock

Removing the loading motor

(See Fig.3 to 5)

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

1.

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

2.

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

3.

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

k

G

Loading motor

Pull outward

CD mechanism control board

Front bracket

Fig.3

Front bracket

k

G

Pull outward

Flame

Fig.4

2-7

KD-LX10/KD-LX30

Loading motor

H

Belt

Fig.5

Removing the CD mechanism ass’y

(See Fig.1, 6 to 9)

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

1.

Remove the three screws I and the damper bracket.

2.

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

3.

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

4.

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

ATTENTION:

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

CD mechanism ass’y

I

Flame

Fix plate (L)

Damper bracket

m

I

Fig.6

I

Fig.7

Rear damper bracket

Fix arm (L)

J

2-8

l

Fix arm (R)

Damper

l

Fig.8

Rear damper bracket

J

l

Fig.9

Damper

Fix plate(R)

l

KD-LX10/KD-LX30

Removing the feed motor ass’y

(See Fig.10)

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

1.

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

Removing the pickup unit

(See Fig.10 and 11)

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

1.

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

Feed motor ass’y

K

FD gear

Nut push spring plate

FD screw

Pickup unit

Fig.10

Part n

Part O

Pickup unit

L

Pickup mount nut

Pickup unit

ATTENTION:

2.

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

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

Removing the spindle motor

(See Fig.12 and 13)

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

1.

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

2.

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

FD screw

p

Spindle motor

Fig.11

p

Fig.12

M

Fig.13

2-9

KD-LX10/KD-LX30

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

Unsolder the part a and b on the CD mechanism control board.

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

Remove the screw A attaching the CD mechanism control board.

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

Disconnect the flexible wire from connector on the pickup unit.

ATTENTION:

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

CD mechanism ass’y

m

Front bracket

Damper bracket

D

A

Fig.1

Pickup unit

D

b

f

m

c

D

e

CD mechanism control board

Flexible wire

Shift the lock

d

FD gear

f

B

Loading motor

Pull outward

Fig.2

CD mechanism control board

Front bracket

Fig.3

Front bracket

f

B

Pull outward

2-10

Flame

Fig.4

KD-LX10/KD-LX30

Removing the loading motor

(See Fig.3 to 5)

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

1.

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

2.

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

3.

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

Removing the CD mechanism ass’y

(See Fig.1, 6 to 9)

CD mechanism ass’y

D

Flame

Loading motor

C

Belt

Fig.5

Damper bracket

h

DD

Fig.6

D

h

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

1.

Remove the three screws D and the damper bracket.

2.

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

3.

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

4.

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

ATTENTION:

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

Fix plate (L)

g

Fix arm (R)

Fig.7

Rear damper bracket

g

Fig.8

Rear damper bracket

E

Fix plate(R)

E

Fix arm (L)

Damper

g

Fig.9

2-11

KD-LX10/KD-LX30

Removing the feed motor ass’y

(See Fig.10)

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

1.

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

Removing the pickup unit

(See Fig.10 and 11)

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

1.

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

Feed motor ass’y

F

FD gear

Nut push spring plate

FD screw

Pickup unit

Fig.10

Part j

Part k

Pickup unit

G

Pickup mount nut

Pickup unit

ATTENTION:

2.

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

When reattaching the pickup unit, reattach the part k of the pickup unit, then the part j of the FD screw.

Removing the spindle motor

(See Fig.12 and 13)

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

1.

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

2.

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

FD screw

m

Spindle motor

Fig.11

m

Fig.12

H

2-12

H

Fig.13

KD-LX10/KD-LX30

2-13

KD-LX10/KD-LX30

Caution : Replacing the pickup

To prevent damage to the laser diode static electricity destroys the laser diode. Always take countermeasure to performing repairs around the laser pickup.

1. Do not touch the area around the laser diode or the actuator.

2. Do not check the laser diode with a tester or other device (the laser diode can be broken quite easily).

3. Short-circuit the laser pickup Solder the land in the center of the flexible cable of the laser diode and help prevent damage from static electricity.

Caution : Solder rejection or cuts a pattern with nipper at shortstop point after short circuiting with clip with terminal face of flexible cable in the static electricity countermeasure soldering iron application that is not done. And the rejection back inserts it in connector immediately and do not touch terminal side of connector either.

Recommendation Soldering iron HAKKO ESD countermeasures product

2-14

Soldering

Caution : Do not forget to remove the soldered laser diode short-circuit after finishing repair, and leave the circuit open.

Maintenance of laser pickup

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

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

KD-LX10/KD-LX30

Is RF output

1.0 0.35Vp-p?

YES

O.K

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

NO

Replace it.

Replacement of laser pickup

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

Replace the pickup with a normal one.(Refer to

Pickup Removal on the previous page)

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

Play a disc.

Check the eye-pattern at TP1.

Finish.

2-15

KD-LX10/KD-LX30

Extension code connecting method

Using the extention cords to connect the front panel with the main board

Remove the main board follwing the disassembly methode. Then reattachi the heat sink to main board.

Using the 2pin extention cord (EXTLX001-2p),

1. connect the harness of the feed motor (L) assembly with the connector CN503 on the main board.

Using the 2pin extention cord (EXTLX001-2p),

2. connect the harness of the feed motor (R) assembly with the connector CN504 on the main board.

Using the jig board (EXTLX002-SWPWB), its

3. installing to the chassis, then using 4pin extention cord (EXTLX002-4P) connect the harness of the lifter detecting board with the connector CN704 on the board.

Connect the connector (EXTLX001-6PC) and

4. extension wire (EXTLX001-6PF), connect the 6pin connector CN702 on the main board.

Connect the connector (EXTLX002-16PC) and

5. extension wire (EXTLX002-16PF), connect the 16pin connector CN701 on the main board.

EXTGS004-26P

EXTLX001-16PF

EXTLX002-SWPWB

EXTLX002-4P

EXTLX002-16PC

EXTLX001-2P

EXTLX001-6PC

EXTLX001-2P

EXTLX001-6PF

2-16

Extension cord list for KD-LX10/KD-LX30

EXTLX002-JIG : Kit including the following 8 extension parts.

KD-LX10/KD-LX30

No.

1 2 3 4 5 6 7

Parts number Quantity Description EXTLX001-2P EXTLX001-6PF EXTLX001-6PC EXTLX002-16PF EXTLX002-16PC EXTLX002-SWPWB EXTLX002-4P

Besides the above kit, we offer the conventional extension cord for CD mechanism which are not essential to operation check or service. The mechanism should be directly connected to the board using the extension wire. EXTGS004-26P

2 1 1 1 1 1 1

2Pin, 30cm extension cord 6Pin, 30cm flat wire 6Pin x 2, interlocking connector 16Pin flat wire 16Pin, interlocking connector 3 switch PWB 4Pin, 30cm extension cord

EXTGS004-26P

EXTLX001-16PF

EXTLX002-SWPWB

EXTLX002-4P

EXTLX002-16PC

EXTLX001-2P

EXTLX001-6PC

EXTLX001-2P

EXTLX001-6PF

2-17

KD-LX10/KD-LX30

Reassembly

1. Perform reassembly be reversing the removing process of "removal of main parts". CAUTION 1: Prior to reattaching the heat sink, make sure to reattache the top chassis.

2-18

KD-LX10/KD-LX30

Functions of the mechanism under the service mode

With the three error modes stored in maximum in the internal memory of the mechanism in the body of this system, it is posible under the service mode to call the contents of error according to the following steps when any error has occurred.

Press the three buttons (UP button )+( button)+(Func button ). Then it is possible to select the follwing service modes. After changing over to the service mode, press the UP button and DOWN button to change the mode. For executing the respective service modes, press the SEL button. With the service mode 2 , it is possible to call the error codes of the mechanism.

NORMAL MODE

(UP button ) + ( button) + ( button) at the same time.

DELEEPROM

CD-CH ERR

DEL CH-ERR

RUNNING

DELDATA

CD-ERR

Data stored in EEPROM

: Deletion of entire EEPROM data. This mode is used when shipping this system from factry.

: This mode is used only when the CD changer is connected.

: Running mode (Do not use this mode under the servise mode)

: (Deletion of CD error code and RDS data)

: Calling of CD mechanism error code

1. RDS data

2. CD mechanism error cord

3. Station name (to be input by user)

4. DISC name (to be input by user)

5. AUX input name (application only to KD-LX30) *Any data 3 to 5 above should not be deleted.

SEL MODE

2

1

34

SOURCE

DISP BBE

BAND OFF/

5

6

2-19

KD-LX10/KD-LX30

1. Display of mechanism error

Error codesDescriptionOccurrence condition

Disc loading error

Eject error

Error during standby for loading

2. Display of CD error

Pickup feeding error

1. Inner peripheral feeding error (10sec.)

2. Outer peripheral feeding error (10sec.) Focus search error In the case of focusing error after 3-way focus searching

Tracking balance adjusting error In the case of time-over (1sec.) of timer TOC area searching error In the case of time-over (10sec.) of timer Reading error IN the case of time-over (30sec.) of timer 1st tracking access error In the case of time-over (10sec.) of timer Last tracking access error In the case of time-over (10sec.) of timer Q code reading error In the case of time-over (0.6sec.) of timer TEXT data reading error

1. SW4 is not turned off.

2. SW3 is not turned on.

1. SW# is not turned off.

1. In case SW2 has been positioned to "L" before starting loading during waiting for 15sec.

The pickup cannot returned to the inner peripheral, and the REST switch is not turned off. The pickup cannot be returned to the outer peripheral, and the REST switch is not turned off. In case the focus cannot be searched by one set of focus searching (3-way focus searching) after disc change and focus shock, judge that the focus searching system is in error. In case tracking balance cannot be adjusted even after elapse of 1sec. following execution of the adjusting command (TBA).

In case TOC area searching is not ended even after elapse of 10sec. In case reading is not ended even after elapse of 30 sec. during TOC reading action.

In case the first tracking access is not ended even after elapse of 10sec. following completion of TOC reading. In case the last tracking access is not ended even after elapse of 10sec. following completion of first tracking under the RUNNING mode. In case the Q code cannot be read for 0.6sec. during playing TOC program area.

In case all TEXT data cannot be read.

09 0011 09 0013

01 0021

80 0031

Error codesDescriptionOccurrence condition

04 0051 04 0052

81 0053

82 0054

82 0055 84 0059

80 0060

80 0061

80 0062

80 0063

2-20

Flow of functional operation until TOC read

Power ON

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

Set Function to CD

KD-LX10/KD-LX30

• When the laser diode correctly emits

Microprocessor

commands

FMO MN662748RPM "32"

FEED MOTOR +TERMINAL

TERMINAL

IC661"26" REST SW

• When correctly focused

AN8806SB-W 27

Focus Servo Loop ON

Disc inserted

Pickup feed to the inner area

Laser emitted

Focus search

Disc rotates

RF signal eye-pattern remains closed

Tracking loop closed

RF signal eye-pattern opens

TOC readout

YES

Microprocessor

commands

MN662748RPM 57

CN602 2

"No disc"

display

• When the disc correctly rotates

Microprocessor commands

BCM MN662748RPM 24

Spindle motor (-) IC661 "2"

AccelerationAcceleration

0.5 Sec

Rough Servo

0.5 Sec

Servo CLV

Jump to the first track

Play

Tracking Servo Loop ON

• RF signal

Rough Servo Mode

CLV Servo Mode (ProgramArea)

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

2-21

KD-LX10/KD-LX30

Feed Section

Is the voltage output at

IC631 pin "26" 2.5V or

YES

Is 4V present at both

sides of the feed motor?

YES

NO

Is the wiring for IC941

(10) ~ (15) correct?

NO

Is 6V or 2V present at

IC601 "26" and "27"?

NO

YES

Is 5V present at IC601

pin "5"?

YES

Check the vicinity of

IC941.

Check the feed motor

connection wiring.

NONO

Check CD 9V

and 5V.

Check the feed motor.

Focus Section

When the lens is

moving:

Does the S-search

waveform appear at

IC601 pins "17" and "18"?

Spindle Section

Is the disk rotated?

YES

Does the RF signal

appear at TP1?

YES

Check IC661.

NO

YES

NO

Check the circuits in

the vicinity of IC661

pins "17" ~ "20".

Check the pickup and

its connections.

Is 3.5V present at IC661

pins "1" and "2" ?

Check the spindle motor

and its wiring.

YES

NO NO

Is 4V present at IC631

pin "25" ?

YES

Check the vicinity of

IC661.

Check IC601 and

IC631.

Is the RF waveform at TP1

distorted?

Proceed to the Tracking

section

Tracking Section

When the disc is rotated

Is the tracking error signal

output at IC631 "33"?

2-22

YES

at first:

Approx. 1.2 V

YES

Check IC601.

NO

Check the circuits in the

vicinity of IC601 "10" ~

"18" or the pickup

Check the circuit in the

vicinity of IC601 pins

"20" ~

YESYES

.

Check the pickup and

its connections.

FAN8037 (IC581) : CD driver

1. Pin layout & Block diagram

48 47 46 45 44 43 42 41 40 39 38 37

KD-LX10/KD-LX30

2. Pin function

Symbol

No.

1

IN2+

2

IN2-

3

OUT2

4

IN3+

5

IN3-

6

OUT3

7

IN4+

8

IN4-

9

OUT4

10

CTL1

11

FWD1

12

REV1

13

CTL2

14

FWD2

15

REV2

16

SGND

17

FWD3

18

REV3

19

CTL3

20

SB

21

PS

22

MUTE

23

PVCC2

24

DO7-

1 2 3 4 5 6

7 8

9 10 11 12

13 14 15 16 17 18 19 20 21 22 23 24

Function

I/O

I

CH2 op-amp input(+)

I

CH2 op-amp input(-)

O

CH2 op-amp output

I

CH3 op-amp input(+)

I

Ch3 op-amp input(-)

O

CH3 op-amp output

I

CH4 op-amp input(+)

I

CH4 op-amp input(-)

O

CH4 op-amp output(+)

I

CH5 motor speed control

I

CH5 forward input

I

CH5 reverse input

I

CH6 motor speed control

I

CH6 forward input

I

CH6 reverse input

-

Signal ground

I

CH7 forward input

I

CH7 reverse input

I

CH7 motor speed control

I

Stand by

I

Power save

I

All mute

-

Power supply voltage

O

CH7 drive output(-)

M

s

S

w

C

M

s

S

w

C

M

s

S

w

C

T.S .D

D D

STAND BY ALL MUTE

POWER SAVE

Pin No.

25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

Symbol

DO7+

DO6-

DO6+

PGND2

DO5-

DO5+

DO4-

DO4+

DO3-

DO3+

PGND1

DO2-

DO2+

DO1-

DO1+

PVCC1

REGOX

REGX RESX

VREF

SVCC

IN1+

IN1-

OUT1

36 35 34 33 32 31

30 29 28 27 26 25

Function

I/O

O

CH7 drive output(+)

O

CH6 drive output(-)

O

CH6 drive output(+)

-

Power ground2

O

CH5 drive output(-)

O

CH5 drive output(+)

O

CH4 drive output(-)

O

CH4 drive output(+)

O

CH3 drive output(-)

O

CH3 drive output(+)

-

Power ground1

O

CH2 drive output(-)

O

CH2 drive output(+)

O

CH1 drive output(-)

O

CH1 drive output(+)

-

Power supply voltage

I

Regulator feedback input

O

Regulator output

I

Regulator reset input

I

Bias voltage input

-

Signal supply voltage

I

CH1 op-amp input(+)

I

CH1 op-amp input(-)

O

CH1 op-amp output

2-23

KD-LX10/KD-LX30

UPD784215GC-165 (IC701) : CPU

1. Pin layout 100 ~ 25

1

75

~

25

26 ~ 50

2. Pin function (1/2)

Pin No.

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

Symbol Function

1 2 3 4 5 6 7 8 9

SW2 SW3 SW4

REST-SW

LM0 LM1

DIMMER-OUT

LCD-PWR

VDD

X2

X1 VSS XT2 XT1

RESET

SW1

BUS-INT

PS2

CRUISE

NC NC

REMOCON-IN

AVDD

AVREF0

SBAD IN

NC KEY0 KEY1 KEY2

LEVEL

NC

S.METER

AVSS

W-VOL

DOT CONT

AVREF

BUS-SI/SO

BUS-SO

BUS-SCK

STAGE 2

~

51

I/O

CD mechanism detect switch

I

CD mechanism detect switch

I

CD mechanism detect switch

I

Reset signal input terminal from CD mechanism

I

Loading motor control signal input terminal

O

Loading motor control signal input terminal

O

DIMMER signal output terminal

O

Non connect

Power supply terminal

Connect to system main clock X'tal osc

O

Connect to system main clock X'tal osc

I

Connect to ground

Connect to system sub clock X'tal osc

O

Connect to system sub clock X'tal osc

I

System reset signal input terminal

I

CD mechanism detect switch

I

J-BUS signal cut in input terminal

I

Power save 2

I

CRUISE signal input terminal

I

Non connect

Remote control signal input terminal

I

Power supply terminal

Connect to ground

Key control 0 input terminal

I

Key control 1 input terminal

I

Key control 2 input terminal

I

Level meter signal input terminal

I

Non connect

S. meter level input terminal

I

Connect to ground

Woofer volume signal output terminal(only KD-LX30)

O

Dot contrast signal output terminal

O

Power supply terminal

J-BUS data I/O terminal

I/O

J-BUS data out put terminal

O

J-BUS serial clock signal I/O terminal

I/O

Initial setting (L)

I

2-24

2. Pin function (2/2)

No.

41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99

100

Symbol Function

LCD-DA LCD-CL

LCD-CE1

BUZZER

E2PR-DA-I

E2PR-DA-O

E2PR-CLK

BUS-I/O

TM0

TM1 DM0 DM1

SD/ST

LOCAL

MONO CA-SW1 CA-SW2 CA-SW3 CA-SW4 CA-SW5

NC NC

SEEK/STOP

NC

FM/AM PLL-CE PLL-DA PLL-CK

PLL-DI

NC

AMP KILL

VSS

DIMMER-IN

PS1

POWER

CD-ON

MUTE W-LPF1 W-LPF2

W-MUTE

VDD

VOL-DATA

VOL-CLK

NC

NC LCD RST LCD-CE2

DMK TMK

STAGE1

BUCK

CCE

RST TEST BUS0 BUS1 BUS2 BUS3

DISC SEL(8cmCD)

VOICE IN

I/O

Data output terminal for LCD driver

O

Clock output terminal for LCD driver

O

Chip enable 1 output terminal for LCD driver

O

BUZZER control signal output terminal

O

Data input terminal from EEPROM

I

Data output terminal for EEPROM

O

Clock signal I/O terminal with EEPROM

I/O

J-BUS I/O signal terminal

I/O

Tray motor negative signal output terminal

O

Tray motor positive signal output terminal

O

Door motor negative signal output terminal

O

Door motor positive signal output terminal

O

Station detect/Stereo signal input terminal

I

Local ON/OFF select signal output terminal

O

Monaural ON/OFF select signal output terminal

O