JVC UX-V30 Service Manual

SERVICE MANUAL

MICRO COMPONENT SYSTEM

UX-V30

AUTO TAPE SELECT OR

TAPE

AUTO REVERSE

UX-V30

UX-V30

REMOTE CONTROL RM-RXUV5R
DIMMER SLEEP

DISPLAY FM MODE MD/AUX

AUTO

AHB PRO

PRESET

PROGRAM RANDOM REPEAT

BASS TREBLE CANCEL

UP

SET

DOWN

TUNER

TAP E

BAND

VOLUME

COMPACT

DIGITAL AUDIO

VERTICAL DISC

STANDBY/ON

PHONES

MICRO COMPONENT SYSTEM

MD/
AUX

REC

REV.
MODE

TAPE FM/AM CD

DOWN UPMULTI CONTROL

LOADING MECHANISM

UX-V30

AHB
PRO

VOLUME

TIMER

CLOCK

CD

OPEN/CLOSE

CD

CD

Area Suffix

UF

China

Contents

Safety precautions
Important for laser products
Disassembly method
Main adjustment
Flow of functional operation
until TOC read

This service manual is printed on 100% recycled paper.

COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.

1-2
1-3
1-4
1-14

1-18

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

1-19
1-19
1-20

No.20888

Dec. 2000

1-1

UX-V30

1. This design of this product contains special hardware and many circuits and components specially

2. Alterations of the design or circuitry of the product should not be made. Any design alterations of

3. Many electrical and mechanical par ts in the products have special safety-related characteristics.

4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the

Safety Precautions

for safety purposes. For continued protection, no changes should be made to the original design
unless authorized in writing by the manufacturer. Replacement parts must be identical to those
used in the original circuits. Services should be performed by qualified personnel only.

the product should not be made. Any design alterations or additions will void the manufacturer`s
warranty and will further relieve the manufacture of responsibility for personal injury or proper ty
damage resulting therefrom.

These characteristics are often not evident from visual inspection nor can the protection afforded
by them necessarily be obtained by using replacement components rated for higher voltage,
wattage, etc. Replacement parts which have these special safety characteristics are identified in
the Parts List of Service Manual. Electrical components having such features are identified by
shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a
substitute replacement which does not have the same safety characteristics as the recommended
replacement parts shown in the Parts List of Service Manual may create shock, fire, or other
hazards.

like to be separated from live parts, high temperature parts, moving parts and/or sharp edges
for the prevention of electric shock and fire hazard. When service is required, the or iginal lead
routing and dress should be observed, and it should be confirmed that they have been returned
to normal, after re-assembling.

5. Leakage currnet check (Electrical shock hazard testing)
After re-assembling the product, always perform an isolation check on the exposed metal parts
of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control
shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.
Do not use a line isolation transformer during this check.

Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure
the leakage current from each exposed metal parts of the cabinet , particularly any exposed
metal part having a return path to the chassis, to a known good earth ground. Any leakage
current must not exceed 0.5mA AC (r.m.s.)

Alternate check method
Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms
per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by
a 0.15 F AC-type capacitor between an exposed
metal part and a known good earth ground.
Measure the AC voltage across the resistor with the
AC voltmeter.
Move the resistor connection to eachexposed metal
part, par ticularly any exposed metal part having a
return path to the chassis, and meausre the AC
voltage across the resistor. Now, reverse the plug in
the AC outlet and repeat each measurement. voltage
measured Any must not exceed 0.75 V AC (r.m.s.).
This corresponds to 0.5 mA AC (r.m.s.).

0.15 F AC TYPE

1500 10W

Good earth ground

AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)

Place this
probe on
each exposed
metal part.

Warning

1. This equipment has been designed and manufactured to meet international safety standards.

2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.

3. Repairs must be made in accordance with the relevant safety standards.

4. It is essential that safety critical components are replaced by approved parts.

5. If mains voltage selector is provided, check setting for local voltage.

CAUTION

!

1-2

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.

Important for laser products

UX-V30

1.CLASS 1 LASER PRODUCT

2.DANGER : Invisible laser radiation when open and inter

lock failed or defeated. Avoid direct exposure to beam.

3.CAUTION : There are no serviceable parts inside the
Laser Unit. Do not disassemble the Laser Unit. Replace
the complete Laser Unit if it malfunctions.

4.CAUTION : The compact disc player uses invisible
laserradiation and is equipped with safety switches
whichprevent emission of radiation when the drawer is
open and the safety interlocks have failed or are de
feated. It is dangerous to defeat the safety switches.

VARNING : Osynlig laserstrålning är denna del är öppnad

och spårren är urkopplad. Betrakta ej strålen.

VARO : Avattaessa ja suojalukitus ohitettaessa olet

alttiina näkymättömälle lasersäteilylle.Älä katso
säteeseen.

5.CAUTION : If safety switches malfunction, the laser is able
to function.

6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.

CAUTION

!

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

ADVARSEL : Usynlig laserstråling ved åbning , når

sikkerhedsafbrydere er ude af funktion. Undgå
udsættelse for stråling.

ADVARSEL : Usynlig laserstråling ved åpning,når

sikkerhetsbryteren er avslott. unngå utsettelse
for stråling.

REPRODUCTION AND POSITION OF LABELS

WARNING LABEL

1-3

UX-V30

Disassembly method

<Main body>

Removing the rear cover

(See Fig.1 and 2)

1.

Remove the eight screws A attaching the rear cover
on the back of the body.

2.

Remove the two screws B attaching the rear cover
on the bottom of the body.

3.

Unlock the speaker terminal and the antenna
terminal, then remove the rear cover backward with
releasing the hooks.

Removing the side panels

(See Fig.3 and 4)

Prior to performing the following procedure, remove
the rear cover.

A

A

A

A

A

Rear cover

Fig.1

B

Rear cover

1.

Move the side panels in the direction of the arrow
and remove them backward.

Side panel (R)

B

Fig.2

Side panel (L)

1-4

Fig.3Fig.4

UX-V30

Removing the cassette mechanism
assembly (See Fig.5 and 6)

Prior to performing the following procedure, remove
the rear cover and the side panels.

1.

Disconnect the card wires from connector CN304
and CN305 on the main board on the left side of the
body.

2.

Disconnect the harness from connector CN309 on
the Opt, Dig.out board on the right side of the body.
Cut off the band fixing the harness.

3.

Remove the two screws C attaching the cassette
mechanism assembly on both sides of the body and
release the two joints a.

4.

Remove the cassette mechanism assembly in the
direction of the arrow.

Cassette mechanism assembly

Main board

Fig.5

Cassette mechanism assembly

Joint a

C

Joint a

C

CN304

CN305

Opt, Dig.out board

Band

CN309

Removing the main board / the heat sink

(See Fig.7 to 9)

Prior to performing the following procedure, remove
the rear cover, the side panels and the cassette
mechanism assembly.

1.

Disconnect the card wire from connector CN303 and
the harness from CN306 and CN307 on the main
board respectively.

2.

Disconnect the harness from connector CN902 on
the power transformer.

3.

Remove the screw E attaching the main board on
the right side of the body.

4.

Remove the screw F and the two screws G
attaching the heat sink on the back of the body.

ATTENTION:

5.

Disconnect connector CN301 and CN302 on the
main board from the main body. Remove the main
board upward by releasing the two joints b in the
lower part of the main board.

The heat sink can be removed even if
the main board is attached to the body.

CN303

Fig.6

Transformer board

CN902

CN307

Main board

Heat sink

CN306

Fig.7

Main board

CN302

Joint b

E

CN301

Joint b

Fig.8

1-5

UX-V30

Removing the front panel assembly

(See Fig.10 to 12)

Prior to performing the following procedure, remove
the rear cover, the side panels, the cassette
mechanism assembly and the main board.

1.

Disconnect the card wire from connector CN732 on
the LCD board.

2.

Remove the two screws D attaching the front panel
assembly on the bottom of the body.

F

Front panel assembly

G

Heat sink

Main board

G

Fig.9

Tuner & function board

3.

Release the two joints c on the lower right and left
sides of the body. Pull out the front panel assembly
toward the front.

Removing the head phone board

(See Fig.13)

Prior to performing the following procedure, remove
the rear cover, the side panels, the cassette
mechanism assembly, the main board and the front
panel assembly.

1.

Remove the plastic rivet attaching the head phone
board and release the joint d.

Joint c

Front panel assembly

D

D

LCD board

Fig.10

Fig.11

CN732

Front panel assembly

1-6

Plastic rivet

Joint d

Fig.12Fig.13

Joint c

Removing the tuner & function board

(See Fig.14)

Prior to performing the following procedure, remove
the rear cover, the side panels and the cassette
mechanism assembly.

1.

Disconnect the card wire from connector CN1 on the
tuner & function board.

2.

Remove the screw H attaching the tuner & function
board.

UX-V30

3.

Release the two joints e and the joint f of the tuner &
function board.

Removing the power transformer

(See Fig.15)

Prior to performing the following procedure, remove
the rear cover, the side panels and the cassette
mechanism assembly.

1.

Disconnect the harness from connector CN902 on
the power transformer.

2.

Disconnect the harness from connector CN901 on
the AC supply board.

3.

Remove the four screws I attaching the power
transformer.

CN1

Main board

CN902

I

H

J

Joint e

Heat sink

Tuner
& function board

Joint f

Fig.14

AC supply board

J

CN901

I

Removing the AC supply board

(See Fig.15)

*Prior to performing the following procedure, remove
the rear cover, the side panels and the cassette
mechanism assembly.

1.

Disconnect the harness from connector CN901 on
the AC supply board.

2.

Remove the screw F attaching the heat sink on the
back of the body (Refer to Fig.9).

3.

Remove the two screws J attaching the AC supply
board.

ATTENTION:

To remove the AC supply board
efficiently, remove the main board in
advance.

Power transformer board

Fig.15

1-7

UX-V30

<Cassette mechanism assembly>

Prior to performing the following procedure, remove
the rear cover, the side panels and the cassette
mechanism assembly.

Cassette door

Removing the Opt.Dig.out board

(See Fig.16)

1.

Remove the two screws K attaching the Opt.Dig.out
board on the side of the cassette mechanism
assembly.

Removing the cassette mechanism
assembly (See Fig.16 and 17)

Prior to performing the following procedure, remove
the Opt.Dig.out board.

1.

Press the eject button on the front side of the
cassette mechanism assembly to open the cassette
door.

2.

Remove the four screws L attaching the cassette
mechanism assembly on the back of the assembly.

Eject button

L

L

K

Opt, Dig.out board

Fig.16

Cassette mechanism

L

L

1-8

Fig.17

<Front panel assembly>

Prior to performing the following procedure, remove
the rear cover, the side panels, the cassette
mechanism assembly, the main board and the front
panel assembly.

M

UX-V30

CD mechanism cover
(CD mechanism assembly)

Removing the CD mechanism assembly

(See Fig.18 to 21)

1.

Disconnect the harness from connector CN721 and
CN722, and the card wire from CN766 on the LCD
board on the back of the front panel assembly.

2.

Remove the five screws M attaching the CD
mechanism cover to the front panel. Remove the CD
mechanism cover together with the CD mechanism
assembly.

3.

Release the harness from each hook on the CD
mechanism cover.

4.

Remove the five screws N attaching the CD
mechanism cover and the CD mechanism case.
Release the three joints g of the CD mechanism
cover and the CD mechanism case by pushing the
joint hooks inward.

5.

Disconnect the card wire from connector CN603 and
the harness from CN605 on the CD servo control
board.

6.

Remove the CD mechanism assembly from the CD
mechanism cover by pulling out it from the three
bosses h.

M

CN766

LCD board

Joint g

Fig.18

R

Belt

Loading motor

M

CN721

CN722

NN

CD mechanism cover

Loading motor

CD mechanism
case

N

Removing the LED board (A)

(See Fig.21)

1.

Remove the screw O attaching the LED board (A).

CD mechanism cover

CN603

CD servo control board

LCD board (A)

CN605

Joint g

Joint g

N

Fig.19

CD mechanism case

Joint g

CD mechanism cover

Fig.20Fig.21

1-9

UX-V30

Removing the LED board (B) (See Fig.22)

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

1.

Remove the screw P attaching the LED board (B).

Removing the CD door switch board

(See Fig.22)

1.

Release the hook i fixing the CD door switch board
to the CD mechanism cover.

Removing the CD servo control board

(See Fig.22)

Prior to performing the following procedure, remove
the CD mechanism assembly and the LED board (A)
/ (B).

1.

Remove the two screws Q attaching the CD servo
control board.

2.

Pull out the CD servo control board in the direction of
the arrow by releasing the two joints j.

Removing the loading motor

(See Fig.18)

1.

Remove the belt and the two screws R attaching the
loading motor on the back of the front panel
assembly.

CD door switch board

Hook i

P

LCD board (B)

M

M

CN766

LCD board

Operation switch board

Q

Q

Joint j

Fig.22

CD mechanism cover
(CD mechanism assembly)

CD servo control
board

R

Belt

Loading motor

M

CN721

Fig.18

CN722

S

O

LCD board (A)

Removing the LCD board assembly

(See Fig.23)

Prior to performing the following procedure, remove
the CD mechanism cover (CD mechanism
assembly).

1.

Remove the two screws S attaching the LCD board
assembly.

2.

Disconnect connector CN781 on the LCD board
assembly from the operation switch board.

Removing the operation switch board

(See Fig.24)

Prior to performing the following procedure, remove
the LCD board assembly.

1.

Remove the eight screws T attaching the operation
switch board.

1-10

CN781

T

T

LCD board assembly

Fig.23

Operation switch board

T

Fig.24

UX-V30

<<Cassette Mechanism Section>>

Removing the Playback/Recording & Eraser
Head ( See Figs. 1 and 2 )

1. While shifting the trigger arms seen on the right
side of the head mount in the arrow direction,
turn the flywheel R in counterclockwise direction
until the head mount has gone out with a click
(See Fig. 1).

2. When the flywheel R is rotated in counterclockwise
direction, the Playback/Recording & Eraser head
will be turned in counterclockwise direction from the
position in Fig. 2 to that in Fig. 3.

3. At this position, disconnect the flexible P.C. board
(outgoing from the Playback/Recording & Eraser head)
from the connector CN31 on the head amplifier &
mechanism control P.C. board.

4. After dismounting the FPC holder, remove the flexible
P.C. board.

5. Remove the flexible P.C. board from the chassis base.

6. Remove the spring Afro behind the Playback/Recording
& Eraser head.

7. Loosen the reversing azimuth screw retaining the Playback
/Recording & Eraser head.

8. Take out the Playback/Recording & Eraser head from the
front of the head mount.

9. The Playback/Recoring & Eraser head should also be
removed similarly according to Steps 1 ~ 8 above.

Frexible
board

Cassette mechanism

Fig. 1

Playback/Recording &
eraser hyead

Flywheel R

Trigger armHead mount

Spring "a"

Trigger arm

Reassembling the Playback/Recording & Eraser
Head

1. Reassemble the playback head from the front of the head
mount to the position as shown in Fig. 3.

2. Fix the reversing azimuth screw.

3. Set the spring "a" from behind the Playback/Recording &
Eraser head.

4. Attach the flexible P.C. board to the chassis base, and fix
it with the FPC holder as shown in Fig. 3.

5. The Playback/Recording & Eraser head should also be
reassembled similarly to Step 1 ~ 4 above.

Head amplifier & mechanism
control P.C. board

Fig. 2

Playback/Recording &
eraser head

Spring "a"

FPC holder

Fig. 3

Flywheel R

Reversing azimuth
screw

Head
mount

Frexible
board

Head amplifier &
mechanis control
P.C. board

1-11

UX-V30

Removing the Head amplifier & Mechanism
control P.C. board
(See Fig. 4)

Belt

1. Remove the cassette mechanism assembly.

2. After turning over th cassette mechanism assembly,
remove the three screws "1" retaining the head
amplifier & mechanism control P.C. board.

3. Disconnect the connector CN32 on the P.C. board
including the connector CN 1 on the reel pulse P.C.
board.

4. When necessary, remove the 4 pin parallel wire
soldered to the main motor.

Removing the Main Motor Assembly

(See Fig. 4~6)

1. Remove the two screws "2" retaining the main
motor assembly (See Fig. 4, 4a).

2. While raising the main motor, remove the capstan
belt from the motor pulley (See Fig. 4a).
Caution 1: Be sure to handle the capstan belt so
carefully that this belt will not be
stained by grease and other foreign
matter. Moreover, this belt should be
hanged while referring to the capstan
belt hanging method in Fig. 5, 6.

Head amplifier &
mechanism control
P.C. board

Flexible P.C. board

Capstan belt

4pin parallel wire

Fig. 4

Main motor
assembly

Main motor
assembly

Main
moteor
assembly

Motor
pulley

Capstan
belt

1-12

Fig. 5

Mechanism motor
assembly

Motor
pulley

Fig. 4a

Main motor
assembly

Flywheel

Motor pulleyCapstan belt

Fig. 6

Removing the Flywheel
(See Figs. 7 and 8)

1. Remove the head amplifier & mechanism control
P.C. board.

2. Remove the main motor assembly.

3. After turning over the cassette mechanism,
remove the slit washers "b" and "c" fixing the capstan
shafts R and L, and pull out the flywheel R and L
respectively from behind the cassette mechanism.

UX-V30

Flywheel R Flywheel L

Capstan shaft R Capstan shaft L

Flywheel R Flywheel L

Fig. 8

Removing the Reel Pulse P.C. board and Solenoid

(See Fig. 9)

1. Remove the five pails "d"~"h" reataining the reel pulse
P.C. board.

2. From the surface of the reel pulse P.C. board parts, remove
the two pawls "i" and "j" retaining the solenoid.

j

Solenoid

Slit
washer

Slit
washer

Fig.7

Reel pulse P.C. board

Fig. 9

1-13

UX-V30

Main adjustment

Measurement Instruments Required for

Adjustment

1. Low frequency oscillator
This oscillator should have a capacity to output
0dBs to 600
50Hz-20kHz.

2. Attenuator impedance : 600

3. Electronic voltmeter

4. Distortion meter

5. Frequency counter

6. Wow & flutter meter

7. Test tape
VTT703L : Head azimuth
VT712 : Tape speed and running unevenness
(3kHz)
VT724 : Reference level (1kHz)

8. Blank tape
TYPE
TYPE

9. Torque gauge : For play and back tension
FWD(TW2111A), REV(TW2121a) and
FF/REW(TW2231A)

10. Test disc: CTS-1000

Measurement conditions

Power supply voltage
: AC230V (50Hz)----B/E/EE/EN
: AC110/127V/230V(50/60Hz)
: UB/UF/US/UX/U
Reference output : Speaker : 0.775V/4
: Headphone : 0.077V/32
Reference frequency and
input level ------------------------------ 1kHz, AUX : -8dBs
MIX MIC: -54dBs (UB/UF/US/UX/U)
Input for confirming recording and playback
characteristics ------------------------- AUX : -28dBs
Measurement output terminal ------- at Speaker J3002

Load resistance --------------------------- 4

Radio Input signal

AM frequency --------------------------------------- 400Hz
AM modulation ---------------------------------------- 30%
FM frequency --------------------------------------- 400Hz
FM frequency deviation ------------------------ 22.5kHz

at an oscillation frequency of

: AC-225
: AC-514

Tuner section

B/E/EN version
FM Band cover: 87.5
MW Band cover: 522
LW Band cover: 144
EE version
FM Band cover: 65
MW Band cover: 522
LW Band cover: 144
UB/UF/US/UX/U version
FM Band cover: 87.5
MW Band cover: 531
SW Band cover: SW1 2.3
: SW2 7
Voltage applied to tuner +B : DC5.7V
VT : DC 12V
Reference measurement
output 26.1mV(0.28V)/3
Input positions AM : Standard loop antenna
FM : TP1 (hot) and TP2 (GND)

Standard measurement position of volume

Function switch to Tape
Beat cut switch to Cut
Super Bass/Active hyper Bass to OFF
Bass Treble to Center
Adjustment of main volume to reference output
VOL : 28

Precautions for measurement

1. Apply 30pF and 33k
side and 0.082
sweeper input side.

2. The IF sweeper output level should be made as
low as possible within the adjustable range.

3. Since the IF sweeper is a fixed device, there is no
need to adjust this sweeper.

4. Since a ceramic oscillator is used, there is no need
to perform any MIX adjustment.

5. Since a fixed coil is used, there is no need to adjust
the FM tracking.

6. The input and output earth systems are separated.
In case of simultaneously measuring the voltage in
both of the input and output systems with an
electronic voltmeter for two channels, therefore, the
earth should be connected particularly carefully.

7. In the case of BTL connection amp., the minus
terminal of speaker is not for earthing. Therefore, be
sure not to connect any other earth terminal to this
terminal. This system is of an BTL system.

8. For connecting a dummy resistor when measuring
the output, use the wire with a greater code size.

9. Whenever any mixed tape is used, use the band
pass filter (DV-12).

F and 100k in series to the

108MHz
1,629kHz
288kHz

74MHz, 87.5 108MHz

1,629kHz
288kHz

108MHz
1,602kHz, 530 1,710kHz

6.995MHz

21.85MHz

to the IF sweeper output

1-14

<<

Arrangement of Adjusting Position

UX-V30

>>

Cassette mechanism section

Head azimuth
adjusting screw
(Forward side)

Head azimuth
adjusting screw
(Reverse side)

Cassette mechanism section (Back side)

Head azimuth
adjusting screw
(Forward side)

Playback/Recording &
eraser head

Head azimuth
adjusting screw
(Reverse side)

Front panel assembly section

VR201
R ch BIAS ADJ

VR101
L ch BIAS ADJ

L301

MOTOR SPEED
VR301

1-15

UX-V30

Tape Recorder Section

Items

Confirmation
of head angle

Measurement
conditions

Test tape
: VTT703L (8kHz)
Measurement output
terminal
: Speaker terminal
Speaker R
(Load resistance: 4 )
: Headphone terminal

Measurement method

1 Playback the test tape VTT703L (8kHz)
2 With the recording & playback mechanism,
adjust the head azimuth screw so that the
forward and reverse output levels become
maximum. After adjustment, lock the head
azimuth at least by half turn.
3 In either case, this adjustment should be
performed in both the forward and reverse
directions with the head azimuth screw.

Confirmation
of tape speed

Test tape
: VT712 (3kHz)
Measurement output
terminal
: Headphone terminal

Adjust VR37 so that the frequency counter
reading becomes 2,940~3,090Hz when
playing back the test tape VT712 (3kHz) with
playback and recording mechanism after
ending forward winding of the tape.

Reference Values for Confirmation Items

Standard
Values

Maximum
output

Tape speed
of deck
: 2,940 ~
3,090Hz

Adjusting
positions

Adjust the head
azimuth screw
only when the
head has been
changed.

VR301

Items

Difference
between the
forward and
reverse speed

Measurement
conditions

Test tape
: VT712 (3kHz)
Measurement output
terminal
: Speaker terminal
Speaker R
(Load resistance: 4 )
Measurement output
terminal
: Headphone

Wow & flutter Test tape

: VT712 (3kHz)
Measurement output
terminal
: Headphone terminal

Measurement method

Standard
Values

When the test tape VT712 (3kHz) has been
played back with the recording and playback
mechanism at the beginning of forward
winding, the frequency counter reading of the
difference between both of the mechanism
should be 6.0Hz or less.

When the test tape VT712 (3kHz) has been
played back with the recording and playback
mechanism at the beginning of forward
winding, the frequency counter reading of
wow & flutter should be 0.25% or less
(WRMS).

6.0Hz or
less

0.25% or
less
(WRMS)

Adjusting
positions

Head azimuth
screw

1-16

Electrical Performance

UX-V30

Items

Adjustment of
recording bias
current
(Reference
Value)

Adjustment of
recording and
playback
frequency
characteristics

Measurement
conditions

Mode: Forward or

reverse mode

Recording mode

Test tape
: AC-514 to TYPE
and AC-225 to
TYPE
Measurement output
terminal
: Both recording and
headphone terminals

Reference frequency
: 1kHz and 10kHz
(REF.: -20dB)
Test tape
: AC-514 to TYPE
Measurement input
terminal
: OSC IN

Measurement method

Standard
Values

1 With the recording and playback
mechanism, load the test tapes (AC-514 to
TYPE

and AC-225 to TYPE ), and set
the mechanism to the recording and
pausing condition in advance.
2 After connecting 100

in series to the
recorder head, measure the bias current
with a valve voltmeter at both of the
terminals.
3 After resetting the [PAUSE] mode, start
recording. At this time, adjust VR31 for Lch
and VR32 for Rch so that the recording
bias current values become 4.0

) and 4.20 A (TYPE ).

A (TYPE

1 With the recording and playback
mechanism, load the test tapes (AC-514 to
TYPE

), and set the mechanism to the
recording and pausing condition in
advance.
2 While repetitively inputting the reference
frequency signal of 1kHz and 10kHz from
OSC IN, record and playback the rape.
3 While recording and playback the test tape
in TYPE

, adjust VR31 for Lch and VR32
for Rch so that the output deviation
between 1kHz and 10kHz becomes

-1dB

2dB.

AC-225
: 4.20
AC-514
: 4.0

Output
deviation
between
1kHz and
10kHz
: -1dB

Adjusting
positions

L ch
: VR101

A

R ch
: VR201

A

L ch
: VR101
R ch
: VR201

2dB

Reference Values for Electrical Function Confirmation Items

Items

Recording
bias
frequency

Measurement
conditions

Forward or reverse

Test tape

: TYPE

(AC-514)

Measurement
terminal : BIAS TP on
P.C. board

Measurement method

1 While changing over to and from BIAS 1
and 2, confirm that the frequency is
changed.
2 With the recording and playback
mechanism, load the test tape.
(AC-514 to TYPE

), and set the
mechanism to the recording and pausing
condition in advance.
3 Confirm that the BIAS TP frequency on the
P.C. board is 100kHz

Eraser
current
(Reference
value)

Forward or reverse

Recording mode
Test tape

: AC-514 to TYPE
and AC-225 to
TYPE
Measurement
terminal : Both of the
eraser head terminals

1 While recording and playback mechanism,
load the test tapes (AC-514 to TYPE
and AC-225 to TYPE ), and set the
mechanism to the recording and pausing
conditions in advance.
2 After setting to the recording conditions,
connect 1W in series to the eraser head on
the recording and playback mechanism
side, and measure the eraser current from
both of the eraser terminals.

6kHz.

Standard
Values

100 kHz

6 kHz

TYPE
: 120 mA
TYPE
: 75 mA

Adjusting
positions

1-17

UX-V30

Flow of functional operation until TOC read

Power ON

Power Key

Slider turns REST
SW ON.

Automatic tuning
of TE offset

Check Point

Check that the voltage at the pin17
of CN604 is 0V (a moment)?

VREF

Tracking error waveform at TOC reading

pin 25 of
IC601(TE)

Approx

1.8V

Tracking
servo

Disc statas
to rotate

off statas

Automatic measurement
of TE amplitude and
automatic tuning of
TE balance

Approx.3sec

Tracking
servo
on statas

Disc to be
braked to stop

TOC reading
finishes

500mv/div
2ms/div

Fig.1

Laser ON

Detection of disc

Automatic tuning of
Foucus offset

Automatic measurement of
Focus A-curve amplitude

Disc is rotated

Focus servo ON
(Tracking servo ON)

Automatic measurement of
Tracking error amplitude

Automatic tuning of
Tracking error balance

Check that the voltage at the
pin3 of IC601 + side is + 5V?

Confirm that the Focus error
S-cuve siganl at the pin27 of
IC601 is approx.2Vp-p

Confirm that the siganl from
pin24 IC603 is 0V as a
accelerated pulse during
approx.400ms.

Confirm the waveform of
the Tracking error signal
at the pin25 of IC601 (R612)
(See fig-1)

1-18

Automatic tuning of
Focus error balance

Automatic tuning of
Focus error gain

Automatic tuning of
Tracking error gain

TOC reading

Play a disc

Confirm the eys-pattern
at the lead of TP1

UX-V30

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.

Maintenance of laser pickup

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

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

Is RF output

1.1 0.15Vp-p?

Replace it.

NO

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.

(Fig.1)

Replacement of laser pickup

1-19

UX-V30

Description of major ICs

LA6541-X(IC541) : Servo Driver

1. Pin Layout & Block Diagram

Vcc Vref Vin4 Vg4 Vo8 Vo7

24 23

22

20

21

19

11k

Vcc

Gnd

Vo6 Vo5 Vg3 Vin3 Cd Res

18

17 16

ohm

- +

- +

Level
shift

Level
shift

B T L
driver

B T L
driver

B T L
driver

B T L
driver

Level
shift

Level
shift

11k
ohm

1

2

Vcc Mute Vin1 Vg1 Vo1 Vo2 Vo3 Vo4 Vg2 Vin2 Reg

3456

Gnd

7 8 9101112

2. Pin functions

Pin

Symbol Function

No.

1

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

2
3
4
5
6
7
8
9

Vcc

Mute

Vin1

Vg1
Vo1
Vo2
Vo3
Vo4
Vg2

Vin2

Reg Out

Reg In

Res

Cd

Vin3

Vg3
Vo5
Vo6
Vo7
Vo8
Vg4

Vin4

Vref
Vcc

Power supply (Shorted to pin 24)
All BTL amplifier outputs ON/OFF
BTL AMP 1 input pin
BTL AMP 1 input pin (For gain adjustment)
BTL AMP 1 input pin (Non inverting side)
BTL AMP 1 input pin (Inverting side)
BTL AMP 2 input pin (Inverting side)
BTL AMP 2 input pin (Non inverting side)
BTL AMP 2 input pin (For gain adjustment)
BTL AMP 2 input pin
External transistor collector (PNP) connection. 5V power supply output
External transistor (PNP) base connection
Reset output
Reset output delay time setting (Capacitor connected externally)
BTL AMP 3 input pin
BTL AMP 3 input pin (For gain adjustment)
BTL AMP 3 output pin (Non inverting side)
BTL AMP 3 output pin (Inverting side)
BTL AMP 4 output pin (Inverting side)
BTL AMP 4 output pin (Non inverting side)
BTL AMP 4 output pin (For gain adjustment)
BTL AMP 4 output pin
Level shift circuit's reference voltage application
Power supply (Shorted to pin 1)

15

14

13

11k
ohm

RESET

Regulator

11k
ohm

Reg

out

In

1-20

MN35510 (IC651) : DIGITAL SERVO&DIGITAL SIGNAL PROCESSER

UX-V30

1. Terminal Layout

2.Block Diagram

LRCKIN(MSEL)
BCLK(SSEL)
SRDATAIN
(PSEL)

IOSEL

CLVS
CRC
BLKCK
CLDCK
SBCK
SUBC
DEMPH
RESY
FLAG6(RESY)

SSEL
SQCK
SUBQ
AVDD2

AVDD2

PCK
EFM
PLLF
DSLF
IREF
DRF
ARF
RSEL
PSEL

MLD
MCLK
MDATA

CK384(EFM)
VCOF
BYTCK
SMCK
FCLK
CSEL
MSEL
X2
X1

ÊSTAT

DIGITAL
DEEMPHSIS

SUB
CODE
BUFFER

DSL.
PLL
VCO

VCO

ITUNING

GENERATION

PITCH

CONTROL

20 ~ 1

21

~

40

41 ~ 60

8TIMES
OVER SAMPUNC
DIGITAL FILTER

EFM
DEMODULATION

SYNC
INTERPOLATION

SUBCODE
DEMODULATION

MICRO
COMPUTER
INTERFACE

A/D

COVERTER

80

~

61

1BIT
DAC
LOGIC
S

16k
SRAM

CIRC
ERROR
CORRECTION
DEINTERLEVE

CLV
SERVO

INPUT

PEM
(R)

PEM
(L)

D/A
CONVERTER

OUTPUT

DIGITAL
AUDIO
INTERFASE

DIGITAL
AUDIO
INTERFASE

INTER POLATION
SOFT MUTING DIGITAL
ATTENUATION
PEAK DETECTIVE
AUTO CUE

PORT

SERVO
TIMING GENERATOR

AVSS1
AVDD1
OUTR

OUTL

FLAG
IPFLAG

TX

ECM

PC

LRCK
SRDATA
BCLK
DMUTE

TRKV
KICK
VREF
TRVSTR
ECS
TVD
TRD
FOD
TBAL
FBAL
TOFS
TES
/TLOCK
/FLOCK
PLAY
LDON
WVEL
SENSE

D

/

D

V

V

V

S

D

D

S

D

D
1

/

R

V

T

S

S

E

T

S

S

1

T

F
E

R

T

F

E

E
N
V

T
R
C
R
S

B

V

D

D

O

E
T

/
R
F
D
E

O
F
T

1-21

UX-V30

3. Description

Pin

symbol

No.

BCLK

1
2

LRCK
SRDATA

3
4

DVDD1
DVSS1

5
6

TX

7

MCLK

8

MDATA

9

MLD

10

SENSE

11

FLOCK

12

TLOCK

13

BLKCK

14

SQCK

15

SUBQ

16

DMUTE

STATUS

17

18

RST

19

SMCK

20

PMCK

21

TRV

22

TVD

23

PC

24

ECM

25

ECS

26

KICK

TRD

27

28

FOD

29

VREF

30

FBAL

31

TBAL

FE

32

TE

33

34

RF ENV

35

VDET

OFT

36

37

TRCRS

38

RFDET

BDO

39

LDON

40

I/O

O

Not used
Not used

O
O

Not used

I

Power supply (Digital)

I

Connected to GND
Digital audio interface output

O

com command clock signal input

I

(Data is latched at signal's rising point)

com command data input

I
I

com command load signal input

Sence signal output

O

O

Focus lock signal output Active :Low

O

Tracking lock signal output Active :Low

sub-code

O

I

Outside clock for sub-code Q resister input
Sub-code Q -code output

O

I

Connected to GND
Status signal

O

(CRC,CUE,CLVS,TTSTOP,ECLV,SQOK)

Reset signal input (L:Reset)

I

I

Not used

I

Not used

O

Traverse enforced output

O

Traverse drive output

I

Not used

Spindle motor drive signal (Enforced

O

mode output) 3-State

Spindle motor drive signal (Servo error

O

signal output)

Kick pulse output

O

Tracking drive output

O
O

Focus drive output

Reference voltage input pin for D/A

I

output block (TVD,FOD,FBA,TBAL)
Focus Balance adjust signal output

O
O

Tracking Balance adjust signal output

Focus error signal input(Analog input)

I

Tracking error signal input(Analog input)

I
I

RF envelope signal input(Analog input)

Vibration detect signal input(H:detect)

I

Off track signal input(H:off track)

I

Track cross signal input

I

RF detect signal input(L:detect)

I

BDO input pin(L:detect)

I

Laser ON signal output(H:on)

O

Description

block clock signal output

Pin
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

symbol

TES

PLAY

WVEL
ARF

IREF

DRF

DSLF

PLLF

VCOF
AVDD2
AVSS2

EFM
PCK
PDO
SUBC
SBCK

VSS

XI
X2
VDD
BYTCK

CLDCK

FLAG
IPPLAG

FLAG

CLVS
CRC

DEMPH

RESY

IOSEL
TEST

AVDD1
OUT L

AVSS1
OUT R

RSEL

CSEL

PSEL

MSEL

SSEL

I/O

Tracking error shunt signal output(H:shunt)

O

I

Not used

I

Not used

I

RF signal input
Reference current input pin

I

Bias pin for DSL

I

I/O

Loop filter pin for DSL

Loop filter pin for PLL

I/O

I

Not used

I

Power supply(Analog)
Connected to GND(Analog)

Not used

III

Not used

I

Not used

I

Not used

I

Not used

Connected to GND(for X'tal oscillation

I

circuit)

Input of 16.9344MHz X'tal oscillation circuit

I

Output of X'tal oscillation circuit

O

I

Power supply(for X'tal cscillation circuit)

I

Not used

I

Not used

I

Not used

I

Not used

I

Not used

I

Not used

I

Not used
Not used

I

Not used

III

pull up

pull up
Power supply(Digital)
Lch audio output

O

I

Connected to GND
Rch audio output

O

II

pull up
Connected to GND

I

Connected to GND

I

Connected to GND

I

Pull up

Description

1-22

AN8806SB-W(IC301) :RF&SERVO AMP

1.Pin layout

UX-V30

PD 1
LD 2
LDON 3
LDP 4
VCC 5

RF- 6
RF OUT 7
RF IN 8

C.AGC 9

ARF 10
C.ENV 11
C.EA 12
CS BDO 13

BDO 14
CS BRT 15
OFTR 16
/NRFDET 17

GND 18

2.Block diagram

36 PDAC
35 PDBD
34 PDF
33 PDE
32 PDER
31 PDFR
30 TBAL
29 FBAL
28 EF­27 EF OUT
26 TE­25 TE OUT
24 CROSS
23 TE BPF
22 VDET
21 LD OFF
20 VREF
19 ENV

6

29

728

27

910 17

8

11

12 19

­+

- +

­+

EQ

AGC

RF
DET

ENV CURCUIT

36

­+

35

­+

31

34

-

+

VCBA

-

+

VCBA

-

-

VCBA

+

­+

OFTR

BDO

­+

13
14

15

16

20

+

- +

32

33

­+

-

VCBA

+

+ -

­+

- +

21

2

+

-

24 25

30

23

26

22

14

3

1-23

UX-V30

3. Pin function

Pin No.

1

2
3

4
5
6

7

8

9
10
11
12
13
14
15
16
17
18

19
20

21
22
23
24

25

26

27

28

29

30

31

32

33

34

35

36

symbol

PD
LD

LD ON

LDP

VCC

RF-

RF OUT

RF IN
C.AGC

ARF

C.ENV

C.EA

CS BDO

BDO

CS BRT

OFTR

/NRFDET

GND

ENV

VREF

LD OFF

VDET

TE BPF
CROSS
TE OUT

TE-

FE OUT

FE­FBAL
TBAL

PDFR
PDER

PDF
PDE

PD BD

PD AC

I/O

I

APC amp . Input terminal
APC amp . Output terminal

O

LD ON/OFF control terminal

I

Connect to GND

-­Power supply

-­RF amp . Reversing input terminal

I

RFamp . Output terminal

O

AGC input terminal

I

AGC loop filter connection terminal

I/O

ARF output terminal

O

RF detection capacity connection terminal

I/O

HPF-amp capacity connection terminal

I/O

Capacity connection terminal for RF discernment side envelope detection

I/O

BDO output terminal

O

Capacity connection terminal for RF discernment side envelope detection

I/O

O

OFTR output terminal
RFDET output terminal

O

--

Connect to GND

O

3TENV output terminal

O

VREF output terminal

--

APC OFF control terminal

O

VDET output terminal

I

VDET input terminal

O

CROSS output terminal

O

TE amp . Output terminal

I

FE amp . Reversing input terminal

O

FE amp . output terminal

I

FE amp . Reversing input terminal

I

F.BAL control terminal

I

T.BAL control terminal

I/O

I-V amp conversion resistance adjustment terminal

I/O

I-V amp conversion resistance adjustment terminal

I

I-V amp input terminal
I-V amp input terminal

I
I

I-V amp input terminal

I

I-V amp input terminal

Function

1-24

UPD78064GF-108 (IC701): System CPU

1.Pin layout

2.Pin function

31 ~ 50

100 ~ 81

80

51

1

30

Pin
No.

Symbol

I/O

Function

Pin
No.

Symbol

I/O

Function

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

I/O
O
I

­ O

-

­ I

­ I

­ I
I

­ I
O
O
O
O
O
O
O
O
O
I
O

­ I

Serial data
Serial clock
CD Q code data
Non connect
CD Q code data synchronizing clock
Connected to VSS
Main system clock
Main system clock
Power supply
Sub system clock
Sub system clock
Reset
Remote control
Non connect
Jog encoder 1
Main clock selection 2
Main clock selection 1
Switched 5V control
CD LSI reset
CD LSI command clock
CD LSI command data
CD LSI command load
Tape playback mute
Tape IC strobe
Tape end detection
Function AUX
AD converter GND
CD abnormal voltage detection

USDATA
USCK
UQRIN
UNC
USQCK
ICVSS
UX2
UX1
VDD
UXT1
UXT2
URESET
UREM
URDSCK
UJOG1
UBEAT2
UBEAT1
U+BCTL
UXRESET
UMCLK
UMDATA
UMLD
UPBMUTE
ULATCH
UREEL
UFAUX
UAVSS
USAFEYCD

29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

I
I
I
I
I
I
I

-

­ I
O

­ I
O
I
O
O
O
O
O
O
O
O

-

-

­O
I

[RESET/CLOSE] switch
Abnormal voltage detection 1
Abnormal voltage detection 2
Body key input 1
Body key input 0
Tape switch 0
Tape switch 1
AD converter power supply
AD converter reference voltage
Backup power supply decision
Function tuner
GND
FM stereo detection
Tuner PLL strobe
JOG encoder 2
BASS control
TRE control
VOL.control
AHB on/off
System muting
Power ON/OFF
Function CD
LCD common
LCD bias voltage
LCD bias voltage
GND
LCD segment
LCD LSI status

URESET/CLOSE

USAFETY1
USAFETY0

UKEY1

UKEY0
UTAPE0
UTAPE1

AVDD

UAVREF

UBUP

UFTUNER

VSS

UMPX

UPERIOD

UJOGB

UBASS

UTRE
UVOL

USBASS

USMUTE

UPOUT

UFCD

COM0~3

BIAS

VLC0~2

VSS

S0~39

USTATUS

51~54

56~58

60~99

55

59

100

~

~

UX-V30

1-25

UX-V30

LA1838(IC102): FM AM IF AMP&detector, FM MPX Decoder

1. Block Diagram
30

ALC

BUFF

FM
S-METER

FM IF

1

2. Pin Function

Pin

Symbol

No.

FM IN

1

AM MIX

2

3

FM IF

AM IF

4

GND

5
6

TUNED

STEREO

7

8

VCC

9

FM DET

10

AM SD

FM VSM

11

AM VSM

12
13

MUTE

14

FM/AM

MONO/ST O

15

29

28

AM

OSC

SD
COMP

S-CLRVE

PM
DET

2

I/O

I

This is an input terminal of FM IF

REG

AM

MIX

AM/FM
IF-BUFF

3

27

FM

RF.AMP

AM IF

4

26

AGC

AM
S-METER

GND

Function

DET

5

signal.
This is an out put terminal for AM

O

mixer.

I

Bypass of FM IF

Input of AM IF Signal.

I

I

This is the device ground terminal.

When the set is tunning,this terminal

O

becomes "L".

O

Stereo indicator output. Stereo "L",
Mono: "H"

III

This is the power supply terminal.

I

FM detect transformer.

I

This is a terminal of AM ceramic filter.

O

Adjust FM SD sensitivity.

O

Adjust AM SD sensitivity.

I/O

When the signal of IF REQ of IC121(
LC72131) appear, the signal of FM/AM
IF output. //Muting control input.

Change over the FM/AM input.

I

"H" :FM, "L" : AM

Stereo : "H", Mono: "L"

25

TUNING
DRIVE

6

24

STEREO
DRIVE

7

22

23

P-DET

VCC

89

Pin

Symbol

No.

16

R OUT

17

L OUT

18

19

20

21

22

23

24

25

26

27

28

29

30

R IN

L IN

RO

LO

IF IN

FM OUT
AM DET
AM AGC

AFC

AM RF

REG

AM OSC

OSC BUFFER

21

DECODER
ANIT-BIRDIE

VCO
384KHz

10

20

STEREO
5N
SW

FF
38k

11

I/O

O

Right channel signal output.

O

Left channel signal output.

Input terminal of the Right channel post

I

18

19

MUTE

FF

/

19k

2

12 13

FF
19k

/

LS

Function

17 16

PILOT
DET

14

AMP.

Input terminal of the Left channel

I

post AMP.
Mpx Right channel signal output.

O
O

Mpx Left channel signal output.

I

Mpx input terminal

FM detection output.

O

AM detection output.

O

This is an AGC voltage input terminal

I

for AM

I

This is an output terminal of voltage
for FM-AFC.

AM RF signal input.

I

Register value between pin 26 and pin28

O

besides the frequency width of the
input signal.

I

This is a terminal of AM Local
oscillation circuit.

AM Local oscillation Signal output.

O

15

1-26

LC72136N (IC121) : PLL Frequency Synthesizer

1. Pin layout

FM/AM

CLOCK

FM/ST/VCO

AM/FM

2. Block diagram

XT
CE

DI

DO

SDIN

1
2
3
4
5
6
7
8
9
10
11

22
21
20
19
18
17
16
15
14
13
12

XT
GND
LPFOUT
LPFIN
PD
VCC
FMIN
AMIN

IFCONT
IFIN

UX-V30

1

22

16

15

3

4
5

6

17
21

3. Pin function

Pin

Symbol

No.
1
2
3

4

5
6

7

8
9
10
11

XT

FM/AM

CE

DI

CLOCK

DO

FM/ST/VCO

AM/FM

LW

MW

SDIN

Reference

Driver

Swallow Counter

1/2

C

2

B

I/F

Power

on

Reset

Function

I/O

X'tal oscillator connect (75kHz)

I

LOW:FM mode

O

When data output/input for 4pin(input) and

I

Swallow Counter

1/16,1/17 4bit

1/16,1/17 4bit

12bit

Programmable

DriverS

Data Shift Register & Latch

7821113

6pin(output): H
Input for receive the serial data from

I

controller
Sync signal input use

I

Data output for Controller

O

Output port
"Low": MW mode

O

Open state after the power on reset

O

Input/output port

I/O

Input/output port

I/O

Data input/output

I/O

Phase

Detector

Charge Pump

Unlock

Detector

Universal

Counter

Pin
No.

12

IFCONT

13
14

15

16
17

18

19

LPFOUT

20
21
22

Symbol

IFIN

AMIN

FMIN

VCC

PD

LPFIN

GND

XT

18
19

20

12

I/O

Function
IF counter signal input

I

IF signal output

O

Not use

-

AM Local OSC signal output

I

FM Local OSC signal input

I

Power suplly(VDD=4.5-5.5V)

­When power ON:Reset circuit move
PLL charge pump output(H: Local OSC

O

frequency Height than Reference frequency.
L: Low Agreement: Height impedance)
Input for active lowpassfilter of PLL

I

Output for active lowpassfilter of PLL

O

Connected to GND

­X'tal oscillator(75KHz)

I

1-27

UX-V30

BA15218N (IC342/IC343/IC391/IC453IC362/IC363)

: Dual Ope. Amp.

+

+

1

-

1 2 3 4 5 6 7 8

OUT1 +IN1 +IN1

+IN2 -IN2 OUT2

GND

2

-

Vcc

BU4094BCF-X(IC304,IC303):Serial to parallel port extension

1.Pin layout

STROBE

DATA

CLOCK

Q1
Q2
Q3
Q4

Vss

2.Block diagram

1
2
3
4
5
6
7
8

16

Vdd

15

OUTPUT ENABLE

14

Q5

13

Q6

12

Q7

11

Q8

10

Q's

9

Qs

DA TA

CLOCK

STROBE

OUTPUT

ENABLE

15

2

8-STAGE

3

1

SHIFT REGISTER

8-BIT

10

9

Q's
Qs

SERIAL
OUTPUT

LATHES

3-STATE

OUTPUTS

Q1

Q8

PARALLEL OUTPUT

1-28

GP1U271X (IC701) : Receiver for remote

+
–

Amp.

Limiter Integrator Comparator

LB1641 (IC501) : DC Motor Driver

1. Pin Layout

B.P.F

Demodulator

GND

UX-V30

VCC Vout

1 2 3 4 5 6 7 8 9

GNDOUT1 P1

VZ IN1 IN2

2. Pin Functions

Input Output

IN1 IN2 OUT1 OUT2

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

VCC1

10

VCC2 P2

OUT2

Mode

Brake

CLOCKWISE

COUNTER-CLOCKWISE

Brake

1-29

UX-V30

AN7345(IC302) PB/REC AMP

1

2. Pin Function

Pin

Symbol

No.

1

R1

2

R2

L1

L2

NF1

24

1

R1

I/O

I

Playback amplifier input

Playback amplifier input

I

R2

23

2

22

3

NF2

AMP

AMP

Pre

Pre

OUT1

4

OUT2

Function

EQ1

2021

EQ

CTRL

5

EQ2

CTL1

Pre

Source

CTRL

6

CTL2

RIN1

RNF1

1819

17

78

RIN2

RNF2

Pin
No.

13

14

9

EQ

CTL

ALC

10 11

LC

I/O

I

I

VCC

RF

141516

13

REPPLE

REJ

12

LPF GND

Repple filter

ROUT1

ALC
AMP

ALC
AMP

ROUT2

Symbol

Vcc Power supply

RF

Function

3

NF2

4

OUT2 Playback amplifier output

EQ2 I

5

CTL2 I Pre Amplifier input swithing time

6

RIN2 I

7

RNF2 I Recording amplifier negative feedback

8

ROUT2

9

LC I

10

11

LPF

GND I

12

I

Playback amplifier negative feedback

O

Equlaizer

constant

Recording amplifier input

Recording amplifier output

O

ALC low cut

ALC low pass filter

I

EQCTL EQ control

15

16

ROUT

17

RNF1 Recording amplifier negative feedback
RIN1

18

CTL1

19

20

EQ1 Equlayzer

21

OUT1

NF1

22

L2 I

23

24

L1

I

O

Recording amplifier output

I
I Recording amplifier input

Pre amplifier input swithing control

I

I

Playback amplifier output

O

Playback amplifier negative feedback

I

Playback amplifier input

Playback amplifier input

I

1-30

LC75342

UX-V30

1-31

UX-V30

3. Pin function

Pin No.

1

2

3
4
5

6

7
8

9
10
11
12
13
14
15
16
17
18
19

20
21
22
23
24
25

26

27
28
29
30

symbol

D1

CE

Vss Ground

TEST

LOUT Volume+equalizer output
LBASS2
LBASS1

LTRE

LIN

LSEL0 Input selector output pin

L4
L3

L2
L1

NC
NC

R1
R2

R3
R4

RSEL0

RIN

RTRE

RBASS1
RBASS2

ROUT

NC

Vref

VDD

CL Clock input

I/O

Serial data input pin for control

I

Chip enable pin

I

-­I

TEST pin for electronic volume control

O

Bas-band filter comprising capacitor and resistor connection

O

Bas-band filter comprising capacitor and resistor connection

I

Capacitor connection pin comprising treble band filter

I

Volume+equalizer intput

I

O

Input signal pin

I

Input signal pin

I

Input signal pin

I

I

Input signal pin

--

No connect

--

No connect
Input signal pin

I

Input signal pin

I

Input signal pin

I

Input signal pin

I

Input selector output pin

O

I

Volume+equalizer intput

I

Capacitor connection pin comprising treble band filter

I

Bas-band filter comprising capacitor and resistor connection
Bas-band filter comprising capacitor and resistor connection

O

O

Volume+equalizer output

-- No connect
Analog ground

O

I

Poer Supply

I

Function

1-32

LC72723

1.

Pin Assignment

Block diagram

2.

VREF

FLOUT

UX-V30

CIN

Vdda

REFERENCE

VOLTAGE

Vssa

MPXIN

TEST

3. Pin functions

Pin

Symbol

No.

1

VREF

2

MPXIN

Vdda

3
4

Vssa

5

FLOUT

6

CIN

TEST

7
8

XOUT

9

XIN

10

Vssd

11

Vddd

12

MODE

13

RST

14

RDDA

RDCL

15
16

RDS-ID
READY

ANTIALIASING

FILTER

TEST

I/O

O

I

O

I
I

O

I

I

I

O

I/O

O

CLOCK

RECOVERY
(1187.5kHz)

DECODER

(128-bits)

RDS-ID
DETECT

57kHz

BPF

(SCF)

SMOOTHING

FILTER

CLK(4.332MHz)

OSC

XIN

PLL

(57kHz)

VREF

XDUT

Function

Reference voltage output (Vdda/2)

Baseband (multiplexed) signal input
Analog power supply (+5V)
Analog ground

Subcarrier input (filter output)
Subcarrier input (comparator input)
Test input

Crystal oscillator output (4.332MHz)
Crystal oscillator input (exeternal reference input)
Digtal ground
Digtal power supply

Read mode setting (0:master,1:slave)
RDS-ID/RAM reset (positive polarity)
RDS data output
RDS clock output (master mode)/RDS clock input (slave mode)

RDS-ID/READY output (negative polarity)

DATA

RAM

Vddd

Vssd

RDDA

RDCL

MDDE

RST

RDS-ID/
READY

1-33

UX-V30

<<MEMO>>

1-34

UX-V30

UX-V30

VICTOR COMPANY OF JAPAN, LIMITED

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

No.20888

Printed in Japan
200012(O)

1-35