JVC KD-LH1101 Service Manual

SERVICE MANUAL

CD RECEIVER

4984220035

KD-LH1101

Area suffix

E ------ Continental Europe
EX ---------- Central Europe

TABLE OF CONTENTS

1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

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

4 Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED

No.49842

2003/5

SPECIFICATION

AUDIO AMPLIFIER
SECTION

TUNER SECTION Frequency Range FM 87.5 MHz to 108.0 MHz

CD PLAYER
SECTION

GENERAL Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)

Maximum Power Output Front 50 W per channel

Rear 50 W per channel

Continuous Power Output (RMS) Front 19 W per channel into 4 Ω, 40 Hz

to 20,000 Hz at no more than 0.8%
total harmonic distortion.

Rear 19 W per channel into 4 Ω, 40 Hz

to 20,000 Hz at no more than 0.8%

total harmonic distortion.
Load Impedance 4 Ω (4 Ω to 8 Ω allowance)
Equalizer Control Range Frequencies 60 Hz, 150 Hz, 400 Hz, 1 kHz,

2.4 kHz, 6 kHz, 12 kHz
Level ±10 dB
Frequency Response 40 Hz to 20,000 Hz
Signal-to-Noise Ratio 70 dB
Line-Out Level/Impedance 2.0 V/20 kΩ load (full scale)
Output Impedance 1 kΩ

AM (MW) 522 kHz to 1,620 kHz

(LW) 144 kHz to 279 kHz

[FM Tuner] Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)

50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω
Alternate Channel Selectivity (400 kHz) 65 dB
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 30 dB
Capture Ratio 1.5 dB

[MW Tuner] Sensitivity 20 µV

Selectivity 35 dB
[LW Tuner] Selectivity 50 µV
Type Compact disc player
Signal Detection System Non-contact optical pickup (semiconductor laser)
Number of channels 2 channels (stereo)
Frequency Response 5 Hz to 20,000 Hz
Dynamic Range 96 dB
Signal-to-Noise Ratio 98 dB
Wow and Flutter Less than measurable limit

Grounding System Negative ground
Allowable Operating Temperature 0°C to +40°C
Dimensions (W x H x D) Installation Size (approx.) 182 mm x 52 mm x 150 mm

Panel Size (approx.) 188 mm x 58 mm x 12 mm

Mass (approx.) 1.4 kg (excluding accessories)

1-2 (No.49842)

1.1 Safety Precautions

SECTION 1

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.

(No.49842)1-3

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 pre vent damage by static electricity

Static electricity in the work area can destroy the optical pickup (laser dio de) in devices such as CD 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 conductive sh eet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.

(2) Ground yourself

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

(caption)
Anti-static wrist strap

1M

Conductive material
(conductive sheet) or iron plate

(3) Handli ng the optical pickup

• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optica l
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 trav erse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the

replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a

time when attaching it to the connector.
(3) Handle the flexible cable carefully as it may break when subjected to strong force.
(4) It is not possible to adju st 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

1-4 (No.49842)

Short-circuit point

Pickup

Pickup

SECTION 2

Disassembly method

2.1 Main body

2.1.1 Remov ing the front panel assembly
(See Fig.1)

(1) Push the detach b utton in the lower left part of the front

panel assembly and remove the front panel assembly.

2.1.2 Removing the bottom cover
(See Fig.2)

• Prior to performing the following procedure, remove the front

panel assembly as required.
(1) Turn over the main body and release the two joints a, two

joints b and joint c.

Caution:

Do not damage the main board when releasing the joints using
a screwdriver.

Front panel assembly

Detach button

Fig.1

Bottom cover

Joint b

Joint a

2.1.3 Removing the front chassis assembly
(See Figs.3 and 4)

• Prior to performing the following procedures, remove the front

panel assembly and bottom cover.
(1) Remove the two screws A on the both sides of the main

body. (See Fig.3.)

(2) Remove the two screws B on the front side of the main

body. (See Fig.4.)

(3) Release the two joints d and two joints e on the both sides

of the main body. (See Fig.3.)

Joint a

Joint d

A

Joint d

Front chassis assembly

Joint b

Joint c

Fig.2

Joint e

A

Joint e

Fig.3

Front chassis assembly

B

Fig.4

(No.49842)1-5

2.1.4 Removing the heat sink
(See Fig.5)

• Prior to performing the following procedure, remove the front

panel assembly as required.
(1) Remove the two screws C and two screws D on the left

side of the main body.

C

2.1.5 Removing the rea r bracket
(See Fig.6)

• Prior to performing the following procedures, remove the bot-

tom cover.
(1) Remove the three screws E, one screws F and three

screws G on the back side of the main body.

(2) Remove the rear bracket.

Reference:

During reassembly, before fixing the rear bracket onto the
main body, insert the STEERING REMOTE cable into the
slots.

2.1.6 Removing the main board
(See Fig.7)

• Prior to performing the following procedures, remove the front

panel assembly, bottom cover, front chassis assembly, heat
sink and rear bracket
(1) Remove the two screws H attaching the main board.
(2) Disconnect the connector CN601 and remove the main

board in an upward direction.

E

H

D

Rear bracket

Heat sink

Fig.5

G

Insert STEERING cable
into the slots.

Fig.6

F

Main board

G

E

H

1-6 (No.49842)

CN601

Fig.7

2.1.7 Removing the CD mechanism assembly

(See Fig.8)

• Prior to performing the following procedure, remove the front

panel assembly, bottom cover, front chassis assembly, heat
sink, rear bracket, main board and mecha control board.
(1) Remove th e three screws J attaching the CD mechanism

assembly to the top chassis.

J

2.1.8 Removing the front board

(See Figs.9 to 11)

• Prior to performing the following procedures, remove the front

panel assembly.
(1) Remove the five screws K atta ching the rear cove r on the

back side of the front panel assembly. (See Fig.9.)

(2) Release the ei ght joints f, remove the rear cover from the

front panel assembly. (See Fig.10.)

(3) Take out the front board. (See Fig.11.)

CD mechanism assembly

K

Front panel assembly

K

Front panel assembly

J

Fig.8

Rear cover

Fig.9

Joint f

Top chassis

K

K

Rear cover

Front board

Joint f

Fig.10

Fig.11

(No.49842)1-7

2.2 CD Mechanism Assembly

A

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 the fro nt 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.49842)

2.2.2 Remov ing 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) Move the co nnector 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.49842)1-9

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 out

the switch.

(2) Unsolder the DET switch wire if necessary.

Connector
board

DET switch

DET switch

Pickup

Fig.6

Tab c

DET switch wire

Tab c

Feed sw. holder

Fig.7

1-10 (No.49842)

2.2.4 Removing the chassis unit

r

(See Figs.8 and 9)

• Prior to performing the following procedure, re move the top

cover and connector board.
(1) Remove the two suspensi on springs (L) an d (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)

Chassis unit

Suspension spring (L)

Frame

Suspension spring (R)

Chassis unit

Shafts

Damper

Damper

Suspension spring (L)

Fig.8

Shaft

Dampe

Frame

Fig.9

(No.49842)1-11

2.2.5 Removing the clamp er 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

Joint d

Clamper assembly

Fig.10

Clamper arm spring

Chassis rivet
assembly

Joint d

Clamper
assembly

Chassis rivet assembly

Fig.11

Joint d

1-12 (No.49842)

2.2.6 Removing the loading / feed motor assembly

(See Figs.12 and 13)

• Prior to performing the following procedure, re move the top

cover, connector board and chassis unit.
(1) Remove the scre w 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.

Loading / feed motor assembly

Fig.12

Loading / feed motor assembly

C

Fig.13

(No.49842)1-13

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 th e 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.

Feed sw. holder

Joint f

Joint g

Feed sw.
holder

Part e

Feed rack

Part i

E

Pickup unit

Slot j

F

Fig.15

Pu. shaft

Pickup unit

Joint f

Joint h

Fig.16

Feed rack

Pickup unit

Feed sw. holder

D

Pu. shaft
holder

Pu. shaft

D

Pu. shaft holder

1-14 (No.49842)

Pickup unit

Fig.14

Part e

E

Joint g

Feed rack

Fig.17

Pickup unit

Joint g

Joint f

Feed sw. holder

Fig.18

2.2.9 Removing the trigger arm

r

(See Figs.19 and 20)

• Prior to performing the following procedure, re move 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 assembly

(See Fig.21)

• Prior to performing the following procedure, re move 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) Unsol der the wire marked s if necessary.

H

Fig.20

Top plate assembly

Joints

s

Fig.21

(No.49842)1-15

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) Unsolde r the wire of the mode sw. marked s if necessary.
(3) Turn the select lock arm in th e 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.49842)

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 the 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.49842)1-17

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) Bring up the select arm R to release fro m the link plate

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

(2) Move the link pl ate 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

Joint c'

Joint a'

Link plate

Joint b'

Fig.27

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) Reattach the link pl ate to th e link p late sprin g while joi ning

them at joint d'.

(3) Reattach the joint a' of th e 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.

Top plate

Select arm R

Joint b'

Joint d'

Link plate

Fig.28

Link plate spring

Joint c'

Joint d'

Joint b'

Joint a'

Fig.29

1-18 (No.49842)

Joint a'

Point e'

Link plate

Point f'

Fig.30

2.2.15 Removing the loading roller assembly

(See Figs.31 to 33)

• Prior to performing the following procedure, remove the

clamper assembly and top plate assembly.
(1) Push i nward 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.

Roller guide
spring

Part k'

Loading roller assembly

Loading roller 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 th e 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) Exten d 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

HL washer

Loading roller assembly

Roller guide

Chassis rivet assembly

J

Roller guide
spring

Fig.32

Boss

L side plate

Roller guide spring

Joint h'

Roller guide spring

Loading roller assembly

Joint g'

Lock arm rivet assembly

Fig.31

Roller guide spring

Roller guide spring

Lock arm rivet assembly

Lock arm rivet assembly

Joint i'

Part j'

Fig.33

Roller guide

HL washer

Roller shaft assembly

Loading roller

Roller guide spring

Fig.34

(No.49842)1-19

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 bracket

K

Loading gear 6

Loading gear 5

Loading gear 3

Fig.35

Loading gear bracket

Loading gear 5

Loading gear 6

Loading gear 7

Fig.36

1-20 (No.49842)

2.2.17 Removing the gears

(See Figs.37 to 40)

• Prior to performing the following procedure, re move 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) Mov e the loa din g plate asse mbly in the d irection 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 lo ading plate assemb ly 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 ou t 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.49842)1-21

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

• Prior to performing the following procedure, remove the top

cover, connector board, chassis unit and clamper assembly.
(1) Remov e 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.49842)

Spindle motor

Fig.42

SECTION 3

Adjustment

3.1 Adjustment method  Test instruments required for adjustment

(1) Digital oscilloscope (100MHz)
(2) AM Standard signal generator
(3) FM Standard sig nal 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 volume position

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

 How to connect the extension cable for adjusting

Caution:

Be sure to attach the heat sink and rear bracket onto the power amplifier IC and regulator IC 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.

 Standard measuring conditions

Power supply voltage DC14.4V(10.5 to 16V)
Load impedance 20KΩ(2 Speakers connection)
Output Level Line out 2.0V (Vol. MAX)

 Frequency Band

FM 87.5MHz to 108.0MHz
AM (MW) 522kHz to 1620kHz

(LW) 144kHz to 279kHz

 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.

(No.49842)1-23

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

Extension cable

Heat sink

EXTSH002-22P

Rear bracket

1-24 (No.49842)

3.2 Troubleshooting

Feed section

Is the voltage output at
IC621 pin "40" 5V or 0V?

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

YES

YES

NO YES NO

Is the wiring for IC681
pin 27?

NO

Is 3.3V present at IC681
pin "20"?

YES

Check the vicinity of

Check CD 8V
and 5V.

IC621.

NO

Is 6V or 2V present at
IC681 "4" and "5"?

YES

Check the feed motor
connection wiring.

NO

Check the feed motor.

Focus section

When the lens is
moving:

4V

Does the S-search
waveform appear at
IC681 pins "10" and "11"?

Spindle section

Is the disk rotated?

YES

Does the RF signal
appear at RF test point?

YES

Is the RF waveform at RF
test point distorted?

YES

Proceed to the Tracking
section

Check IC681.

NO

Check the circuits in
the vicinity of IC681
pins "10","11"and"13".

YES

Check the pickup and
its connections

NO

Is 4V present at IC681
pins "6" and "7"?

Check the spindle motor
and its wiring

NO

Check the circuits in the
vicinity of IC601 "2"to

NO

"7" or the pickup

YES

YES

NO

Is 4V present at IC621
pins "41" ?

Check the vicinity of
IC681.

NO

YES

Check IC621 and
IC681.

Tracking section

When the disc is rotated
at first:

Is the tracking error signal
output at IC601 "11"?

Check IC681.

Approx. 1.2V

YES

YES YES

Check the circuit in the
vicinity of IC601 pins
"2"to"7".

Check the pickup and
its connections

(No.49842)1-25

3.3 Flow of functional operation unit TOC read

When the pickup correctly moves

v

to the inner area of the disc

Power ON

Set Function CD

When the laser diode correctly

emits

Microprocessor
commands

FMO
TC94A14FA "40"

FEED MOTOR
+TERMINAL
IC681 "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
CN601"8"

"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(-)
IC 681 "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)

1-26 (No.49842)

3.4 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.

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

3.5 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)

Is RF output

1.0 0.35Vp-p?

NO

Replace it.

YES

O.K

(3) Semi-fi xed resistor on th e 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.

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.

(No.49842)1-27

SECTION 4

Description of major ICs

4.1 BR24C32F-X (IC703) : EEPROM

• Pin layout • Pin function

Vdd WPIN SCL SDA

A0 A1 A2 GND

• Block diagram

Symbol I/O Function

Vdd - 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.

A0 1

A1 2

A2 3

GND 4

11bit

Address
decoder

Control circuit

High voltage osc circuit

16kbit EEPROM allay

11bit

START

Slave Word
Address resister

Power supply
voltage det.

STOP

ACK

8bit

Data
resister

8 Vdd

7 WPIN

6 SCL

5 SDA

1-28 (No.49842)

4.2 BR24C32F-X (IC703) : EEPROM

A

•Pin layout

Vcc WP SCL SDA

A0 A1 A2 GND

• Block diagram

• Pin function
Symbol I/O Function

A0,A1,A2 I Slave address set

GND - Ground (0V)

SDA I/O Slave and word address

Serial data input serial data output

SCL I Serial clock input

WP I Write protect input

VCC - Power supply

A0 1

A1 2

A2 3

GND 4

32kbit EEPROM array

12bits

Address

decoder

High voltage generator Vcc level detect

12bits

START

Control logic

Slave word

address register

STOP

ACK

8bits

Data

register

8 Vcc

7 WP

6 SCL

5 SD

(No.49842)1-29

4.3 HA13164 (IC901) : Regulator

• Terminal layout

123456789101112131415

• Block diagram

ANT OUT

C3

0.1u

EXT OUT

C4

0.1u

ANT CTRL

CTRL

CD OUT

C5

0.1u

AUDIO OUT

C6

10u

12

10

BATT.DET OUT

9

COMPOUT

6

VDD OUT

4

SW5VOUT

5

14

UNIT R:

+B

ACC

ILMOUT

R1

C7

0.1u

C8

0.1u

C1

100u

VCC ACC

8

2

1

7

11

Surge Protector

BIAS TSD

15

3

note1) TAB (header of IC)

connected to GND

ILM AJGND

13

C2

0.1u

C:F

• Pin function
Pin No. Symbol Function

1 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 applies to CTRL pin.
6 COMPOUT Output for ACC detector.
7 ANT CTRL L:ANT output OFF, H:ANT output ON
8 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 ON
12 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 applies to CTRL pin.
15 GND Connected to GND.

1-30 (No.49842)

4.4 HD74HC126FP-X (IC781) : Buffer

•Pin layout •Pin function
Input Output

CA Y

LX Z
HL H
HH L

Note:

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

• Block diagram

1C
1A
1Y
2C
2A
2Y

GND

1
2
3
4
5
6
7

14
13
12

11

10

9
8

VCC
4C
4A
4Y
3C
3A
3Y

Vcc Vcc

1k

Input

Note:

CL includes probe and jig capacitance

See Function Table

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

1Y

2Y
3Y
4Y

Output

Output
Output

Output

S1

CL

1k

Sample as Load Circuit 1
Sample as Load Circuit 1

Sample as Load Circuit 1

(No.49842)1-31

4.5 IC-PST3424U-X (IC803) : Reset

T

• Pin layout

VOUT

VDD

• Block diagram

1

2

VDD

43VSS

NC

2

Vref

3

VSS

• Pin function
No. Pin Name Function

1 Vout Reset Signal Output PIN
2 VDD VDD PIN / Voltage Detect PIN
3 NC Non connect
4 VSS VSS PIN

+

-

1 VOU

4.6 IC-PST9333U-X (IC702) : Regulator

• Pin layout • Block diagram

NC 1

GND 2

• Pin function

Pin No. Symbol Function

1 NC Non con nect
2 GND GND terminal
3 VOUT Reset signal output terminal
4 Vcc Vcc terminal/Voltage detect terminal

4 Vcc

3 VOUT

Vcc 4

NC 1

3 VOUT

2 GND

1-32 (No.49842)

4.7 LA47505 (IC951) : Power amp.

• Terminal layout

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

(No.49842)1-33

• 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

1-34 (No.49842)

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

W

• 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

-

+

H : ON

L : OFF

3.3VREG
(External:PTP Tr)

Signal system
power supply

All outputs ON/OFF

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

11

12

13

14

11k

33k

­+

33k

33k

18

VIN2G

11k

-

17

VIN2

+

16

VIN3G

11k

-

15

VIN3

+

(No.49842)1-35

• Pin function
Pin No. Symbol Function

1 VIN1-A CH1 input AMP_inverted input
2 VIN1+A CH1 input AMP_non-inverted input
3 V CCP1 CH1 and CH2 power sta ge 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 inpu t pin input OP_AMP output pin

1-36 (No.49842)

4.9 M62449FP-X (IC912) : Equalizer

DATA

LATCH

DGND

OUT2

F5R2

F5O2

F5I2

F4R2

F4O2

F4I2

F3R2

F3O2

2

3

4

5

6

8

9

10

11

12

1

MICON
INTERFACE

GE5

7

12K 12K

12K

12K

GE4

GE3

GE5

GE4

GE3

42

41

40

39

38

37

36

3534

33

32

31

CLK

AVSS

DVDD

OUT1

F5R1

F5O1

F5I1

F4R1

F4O1

F4I1

F3R1

F3O1

F3I2

F2R2

F2O2

F2I2

F1R2

F1O2

F1I2

IN2

REFIN

13

14

15

16

17

18

19

20

21

GE2

2K

SBK

GE1

AVSS

40K

70K

CH2

40K

CH1

AVDD

70K

GE1

GE2

2K

68K

3029

28

27

2625

24

23

22

F3I1

F2R1

F2O1

F2I1

F1R1

F1O1

F1I1

IN1

AVDD

(No.49842)1-37

4.10 MX23L8103-90-M2 (IC802) : ROM

A
A
A
A
A
A

A
A

• Pin Layout

15
14
13
12
11
10
A9

A8
NC
NC
NC
NC
NC
NC
NC

18

17

A7

A6

A5

A4

A3

A2

A1

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

• Pin function
Pin No. Name Function

1 to 8 A15 to A8 Address inputs

9 to 15 NC No connection

16, 17 A18, A17 Address inputs

18 to 25 A7 to A0 Address inputs

26 CE# Chip enable input
27 VSS Ground
28 OE# Output enable input
29 D0 Data output
30 D8 Data output
31 D1 Data output
32 D9 Data output
33 D2 Data output
34 D10 Data output
35 D3 Data output

4.11 RPM6938-SV4 (IC805) : Remote control receiver

• Block diagram

MX23L8103

(Normal Type)

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

A16
BYTE#
VSS
D15/A-1
D7
D14
D6
D13
D5
D12
D4
VCC
D11
D3
D10
D2
D9
D1
D8
D0
OE#
VSS
CE#
A0

Pin No. Name Function

36 D11 Data output
37 VCC Power supply
38 D4 Data output
39 D12 Data output
40 D5 Data output
41 D13 Data output
42 D6 Data output
43 D14 Data output
44 D7 Data output
45 D15/A-1 D15 (Word mode)/

LSB address (Byte mode)
46 VSS Ground
47 BYTE# Word/Byte mode selection
48 A16 Address input

1-38 (No.49842)

I/V
conversion

PD

magnetic shield

AMP

BPF

for
trimming circuit

AGC

Detector

Vcc

Comp

22k
ohm

3

1

2

VDD

OUT

GND

4.12 NJM2360AM-X (IC921) : DC-DC convertor

•Pin layout

1. Cs

1
2
3
4

• Block diagram

8
7
6
5

2. Es

3. C

4. GND

5. INV

6. Vcc

7. S

8. C

T

IN

I

D

Switch
collector

Switch
emitter

Timing
capacitor

4.13 NJM4565V-X (IC171) : Dual ope amp

• Pin layout & Pin function

1

2

3

4

1

Q

1

QS

Q

2

R

2

Ipk

C OSC

T

3

COMP

V

REF

4GND

1.25V

+

-

8

A

+

-

7

B

+

-

6

Driver

8

collector

Ipk sense

7

+

6

V

Comparator

5

reversal input

1

AOUTPUT

2

A-INPUT

3

A+INPUT

4

V

5

B+INPUT

6

B-INPUT

7

B OUTPUT

8

V

5

4.14 NJU7241F33-X (IC804) : Voltage regulator

•Pin layout

PIN FUNCTION

1

2

3

5

4

1. GND

IN

2. V

3. VOUT

4. +NC

5. STB

(No.49842)1-39

4.15 SAA6579T-X (IC51) : RDS detecter

E

• Pin layout

QUAL

DATA

Vref

MUX

GND

CIN

SCOUT

1
2
3
4

V

dd

5
6
7
8

CLK

16

T57

15

OSCO

14

OSCI

13

V

dd

12

GND

11

TEST

10

MOD

9

• Block diagram

121413

4

8

7

CLOCKED
COMPARATOR

5

3

REFERENCE
VOLTAGE

ANTI­ALIASING
FILTER

6 11

VP1

57 kHz
BAND PASS
(8th ORDER)

COSTAS LOOP
VARIABLE AND
FIXED DIVIDER

CLOCK
REGERATION
AND SYNC

RECONSTRUCTION
FILTER

TEST LOGIC AND OUTPUT
SELECTOR SWITCH

BIPHASE
SYMBOL
DECODER

910

• Pin function
Pin No. Symbol Description

1 QUAL Quality indication output
2 DATA RDS data outpu t
3 Vref Reference voltage output (0.5VDDA)
4 MUX Multiolex si gnal input
5 Vdd +5V supply voltage for analog part
6 GND Ground for analog part (0V)
7 CIN Sub carrier input to comparator
8 SCOUT Sub carrier output of reconstruction filter

9 MODE Oscillator mode / test control input
10 TEST Test enable input
11 GND Gro und for digital part (0V)
12 Vdd +5V supply voltage for digital part
13 OSCI Oscillator input
14 OSCO Oscillator output
15 T57 57 kHz clock signal output
16 CLK RDS clock output

OSCILLATOR
AND
DIVIDER

QUALITY BIT
GENERATOR

DIFFERENTIAL
DECODER

1

2

15

15

1-40 (No.49842)

4.16 TA2157FN-X (IC601) : RF amp

•Pin layout

24 ~ 13

1 ~ 12

• Block diagram

13

14

15

16

17

18

19

20

21

10pF

40k30k

20k 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

180k

40pF

60k

60k

PIN
VCTRLPIN

22

23

24

SEL

(APC SW)

180k

40pF

3k

3k

TEB

(TE BAL)

VCC APC ON -50% +12dB

HiZ APC ON 0% +6dB

GND

APC OFF

(LDO=H)

50% 0dB

94k
22k

94k

22k

RFGC

(AGC Gian)

3

2

1

TEB

(TE BAL)

Normal mode

(0dB)

Normal mode

(0dB)

CD-RW mode

(+12dB)

(No.49842)1-41

• 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 A PC circuit ON/OFF control signal, laser diode (LDO) control signal input

or bottom/peak detection frequency change pin.

SEL
GND
Hiz
VCC

9 TEB I Tracking error balance adjustment signal input pin

Adjusts TE signal balance by eliminating carrier compo nent 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

APC
circuit

LDO
OFF Connected VCC through 1k resistor
ON

Control signal output

ON Control signal output

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

1-42 (No.49842)

4.17 TC94A14FA (IC621) : DSP & DAC

• Terminal 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

Audio out

Correction

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

Data

slicer

VCO

PLL

TMAX

D/A

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 -sp eed playback.
5 IPF O Correction flag output pin. When set to "H", AOUT output cannot be corrected by C2 correction pro-

cessing.
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

DD3

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

- PLL-only 3.3V power supply voltage pin.

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

(No.49842)1-43

Pin No Symbol I/O Descroption

17 TMAX O TMAX detection result output pin.

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

SS3

- 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 AV

DD3

- 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 pi n.
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

DD3

- Analog 3.3V power supply voltage pin.
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

SS3

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

DD3

R - DA converter GND pin.

SS3

- System clock oscillator 3.3V power supply voltage pin.

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

DD3

- DA converter 3.3V power supply pin.
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.

1-44 (No.49842)

4.18 UPD784217AGC213 (IC701) : CPU

•Pin layout

75 51

76 50

100 26

125

• Pin function
Pin No Symbol I/O Function

1,2 NC - Not use

3 SW2 I CD mecha SW2
4 REST SW I REST SW input
5 LMO O Loading motor control output
6 MOTOR SEL O Loading/feed motor selecting output loading motor:H, feed motor:L
7NC-Not use
8 ANT CONT O Antenna remote control

9 VDD - Power supply
10 X2
11 X1
12 VSS - Ground
13 XT2
14 XT1
15 RESET I System reset
16 REMOCON I Remocon input
17 BUS INT I J-BUS INT
18 PS2 I Power save2, H means STOP mode
19 SW1 I CD mecha SW1
20 RDS SCK I RDS clock input
21 STEERING

I Steering remocon input

REM.
22 KEY DATA I KEY DATA
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

27,28 NC - Not use

29 IOP I IOP input
30 MRC I MRC input
31 SQ I S-Quality level input
32 SM I S.METER input
33 AVSS - Ground
34 NC - Not use
35 STAGE3 I Feature selection, pull down H: 3100series, L: 1100series
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 outp ut:H, input:L
41 DISP DA O DISPLAY DATA output
42 DISP SCK O DISPLAY SCK
43 DISP CE O DISPLAY CE
44 BUZZER O Buzzer output

(No.49842)1-45

Pin No Symbol I/O Function

45 E2PROM DI I I2C data input
46 E2PROM DO O I2C data output
47 E2PROM CK O I2C clock output
48 OPEN I DOOR OPEN SW
49 DETACH I Detach detect input; H means detaching
50 NC - Not use

51 to 53 NC - Not use

54 EQ.CLK O Clock output for e-EQ IC
55 EQ.DATA O Data output for e-EQ IC
56 EQ.LATCH O Latch output for e-EQ IC

57 to 59 NC - Not use

60 RDS DA I RDS data input
61 SD/ST I Station detector or stereo indicator input;

H means a station is there, L means the program is stereo.
62 AFCK O AF check output
63 SEEK/STOP O Auto seek and stop selecting output; H means seeking, L means receiving.
64 CF O Wide & Narrow
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 outp ut for PLL IC
69 PLL DI I Data input from PLL IC
70 TEL MUTING I Telephon e muting detection input;

Active level can be selected H or L in PSM
71 DIM OUT O Dimmer detector output
72 VSS - Ground
73 DIM IN I 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 CDON O CD power supply control output H=CD power on
77 MUTING O Muting output L=muting on
78 NC - Not use
79 NC - Not use
80 LINE SEL I Feature selection H: line input (U57:not support), L: support
81 VDD - 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 WOOFER SEL I Feature selection H:support L:Not support
86 SUB MUTING O Muting control output for subwoofer
87 LPF1 O LPF control1
88 LPF2 O LPF control2
89 STAGE2 I Feature selection H: R or Do L: J or U
90 STAGE1 I Feature selection H: R or U L: J or Do
91 BUCK O Clock output for CD LSI
92 CCE O CE output for CD LSI
93 DSPRST 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 0 for CD LSI
97 BUS2 I/O Data output and input 0 for CD LSI
98 BUS3 I/O Data output and input 0 for CD LSI
99 DISC SEL I 8cm CD select, L=Not use, H=Use

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

1-46 (No.49842)

4.19 TDA7404D-X (IC911) : Car radio signal processor

•Pin layout

• Block diagram

1

14

28

15

MIX

Gain/Auto Zero

Input Multiplexer

Mono/Beep

Mixing Stage

Beep

Loudness

Volume

Soft Mute

Digital Control I C-Bus

Treble

2

Bass

Mono Fader
Mono Fader

Mono Fader
Mono Fader

Mono Fader
Mono Fader

Zero Cross

Supply

(No.49842)1-47

VICTOR COMPANY OF JAPAN, LIMITED

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

(No.49842)

Printed in Japan

WPC