Laservision Vp415 User manual

LaserVision ROM disc drive

VP415/001os1as

~@[fWO©@

Service

LaserVision

erviceManual

The VP415 is a professional Video Disc Drive for use

in

computerized audiovisual systems, involving a high

degree of interactivity.

The Drive

is

suitable for playback

of

pre-recorded

optical video discs, according to the LaserVision system

(PAL standard) and it has the capacity to handle

LV-ROM (LaserVision Read Only Memory) interactive

discs.

Contents:

Chapter 1 Technical data

Controls, indicators, connections

Connector pinning

Chapter 2 Remarks

Caution

Warnings

Modification levels

Adjustments

Demounting instructions

Service hints

Service tools

List of used symbols

Connections of semiconductors

"Use of controls or adjustments

or

performance

of

procedures other than those specified here

in

may result

in

hazardous ratliation exposure".

Safety regulations require that the set be restored to its original

condition and that parts which are identical with those specified

be

used.

L\fRDM

The differences between /00, /05 and/35 are only related

to the ornamental plate

on

the front panel and to the

mainscord.

Version /00 = LV-ROM Disc Drive with Euro mainscord.

/05 = BBC Domesday version with

GB

mainscord

/35 =/00 with

GB

mainscord

Chapter 3 Module- and connector

lay-out

Signal listing

Wiring diagram

Blockdiagram Control routes

Blockdiagram AUDIO/VIDEO signal path

Blockdiagram Servo

Chapter 4 Survey

of

modules

Modules A to Z

-Circuit diagram

-

PCB

lay-out

-Adjustments

-Electrical parts

Remote control

Chapter 5 Exploded view drawings

List

of

mechanical parts

List

of

electrical parts

Chapter 6 Repair method

Chapter 7 Circuit description

Chapter 8 Service Information

DocumentationTechnique Service Dokumentation Documentazione di Servizio Huolte-Ohje Manual

de

Servicio Manual de

Servic;;io

CS

7 814

Subject to modification

@)

4822 726 14282

Printed

in

The Netherlands

c Copyright reserved

Published

by

Service

Consumer

Electronics

Technical data

Controls, indicators, connections

Connector pinning

Remarks

Warnings

Modification levels

Adjustments

Demounting instructions

Service hints

Service tools

List of used symbols

Connections

of

semiconductors

Module-

and connector

lay-out

Signal listing

Wiring diagram

Blockdiagram Control routes

Blockdiagram AUDIO/VIDEO signal path

Blockdiagram Servo

Survey

of

modules

Modules A to Z

-Circuit diagram

-PCB

lay-out

-Adjustments

-Electrical parts

Remote control

Exploded view drawings

List of mechanical parts

List of electrical parts

Repair method

Circuit description

Service Information

Chapter 1

Chapter 2

Chapter 3

Chapter 4

Chapter 5

Chapter 6

Chapter 7

Chapter 8

Technical data

Controls, indicators, connections

Connector pinning

Chapter 1

TECHNICAL DATA

LASERVISION DISC

Disc diameter

Disc thickness

Disc speed

Maximum capacity

(30

cm

-12" disc)

Max. playingtime

Average track pitch

30

cm

(12")

or

20

cm

(8")

2.7

mm

(0.1")

CAV disc: 1500 r.p.m.

CLV disc: 1500-570 r.p.

m.

CAV disc: 54000 pictures per side

LV-ROM disc

(CAV):

324 Mbyte

(max.) user data per side

(in

place of audio)

CAV disc:

36

minutes per side

CLV disc: 1 hour per side

1.6-1.8

µm

LASERVISION DISC DRIVE VP415

General

Front loading motor-powered disc-tray

startup time <13s

unload time (time

between Eject

command

and disc out

of

player) <15s

SSL (solid state laser)

Laser type AIGaAs semiconductor

Wavelength 780

nm

Aperture 0.5

Output of laser 3 - 5

mW

Random access time

CAV:

max. 3s

(~1

s average)

CLV: max. 15s

(~5

s average)

Instant jump up to

50

frames (forward or

reverse) within vertical interval time

On-board

programming

Up

to 16 picture number/chapter

number segments

Program retention with

no mains supply at least 1 week

Mains voltage 220-240 V (± 10%) a.c.

Mains frequence

50

to

60

Hz

Power consumption

60

W approx.

Electrical safety acc.

to

IEC

65

operational conditions

10

to 35 °C

Rei. humidity 20-80%

storage conditions

-40

to

70

°C

Rei. humidity 10-95%

Dimensions

disc-tray open

Weight

TV

system

Video

420x160x400mm

420x160x740mm

15

kg

(approx.)

625/50 PAL

CVBS input (BNC) 1 V into

75

n,

loop-through

CVBS output (BNC) 1 V into

75

Q

CVBS output

(Euroconnector pin

19)

1 V into 75 n

RGB

output

(Euroconnector)

R (pin

15)

G (pin 11)

B (pin

7)

Video bandwidth

0.7 vinto

75

n

0.7 vinto

75

n

0.7 vinto

75

n

RGB

: 5 MHz

(-3dB)

CVBS: 3 MHz

(-3

dB), encoded

Signal-to-noise ratio 40 dB typ. unweighted

(disc dependent)

50

dB typ. weighted

(disc dependent)

Timebase instability

Audio

less than 1

Ons

(normal play)

Audio input (cinch)

Audio output (cinch)

Audio output

(Euroconnector

pins 1 &

3)

Audio bandwidth

Signal-to noise ratio

Channel separation

Genlock

3 Vpp (load 47

k)

650 mV r.m.s. into 1k

(max. deviation)

650

mV

r.m.s. into 1 k

40-20

OOO

Hz

;;,,

50 dB typ. weighted

(disc dependent)

better than

55

dB

Sync input (BNC) 0.3-2.0 Vpp 75Q, loop-though

(wavefrom acc. to CCIR

standards)

Sync input

(DIN

4)

line freq.

15

625

Hz

± 100 ppm

field freq.

50

Hz

locked to line

freq., interlaced, with

or

without

equalising pulses, negative-going,

logic

0:0-1

V,

logic 1

:2

.2-4.2 V

Sync output (BNC) 2.0 Vpp

75

n,

negative-going

Genlock lock-in time

5s

Video mixer

RGB mixing/keying modes:

Player RGB only

Computer output RGB only

Mixed mode: player 62%, computer 38%

Key mode: player 100%, computer 100%

Enhanced mode: Player 57%/100%

LV-ROM

User data capacity Max. 324 Mbyte per disc side

User data per frame 6 kbyte

User data transfer rate

from disc 150 kbyte/s (depending on

Data integrity

rate)

Internal C.P.

U.

System

computer)

(error

~1Q-16

4X6 kbyte cache memory for user

data

compatible with floppy disc and

hard disc systems

CS

7 816

CONTROLS, INDICATORS AND CONNECTIONS

-----

/

EJECT

AUOOI

AUOl02

-

CJ

c:::::J c:::::J

ea

CAV

CLV

ea ea

"'"""'

CONn!Ol

c:,

\\

CJ

D EJE~T PAUSE REPl.AY

ROEAT

---------

1

Front

c;;I

STANDBY

~ONISTANOBY

2 3 4

16

EJECT button

STANDBY indicator

ON/STANDBY button

EJECrindicator

PAUSE indicator

REPLAY ini:licator

REPEAT indicator

AlJDIO 1 indicator

AUDIO 2 indicator

CAV

indicator

CLV indicator

5

REMOTE CONTROL indicator

CS

7

817

6

0

AUDIO AUOIO

IN

OUT

SCSI•

~,

l

,'.'.'.'.'.

'.'.'.J

7 8 .,

17

Rear

1 ON/OFF switch

2 MAINS lead socket

3 REPLAY on/of switch

4

RC

IA/EURO switch

5 WIRED

RC

socket

6 RS232C socket

10

7 BAUD

RATE

dip switches

8 AUDIO

IN

(1

&2)

sockets

9 AUDIO OUT

(1

&2)

sockets

10 A/V EUROCONNECTOR

11

H-SHIFT control [for Genlock]

12 CVBS OUT socket

13

SYNC OUT socket

14 CVBS

IN

socket

15

SYNC

IN

sockets

16

RGB

(TTL)

IN

socket

17

SCSI

address dip switches

18

SCSI socket

11

121314

15

--

)

SYNC

OUT

SYNC

IN

<100

•••••0•0••••

<1

••

•••••••

....

.

..

...

..

.

...

.

...

.......

18

0

Remote control functions

-Play forward/reverse

c=J

'""

"""

CJ CJ

0-ClEAR-Q

CJ

""''

~

STAIIITIAEPU.T

~

I AUOIQ 2

CJ

<I

FAST

t>

~

<ISU'.11Nt>

~

-

SPUO

+

CJ

-Still frame/step forward/reverse

-Audio 1/2 on/off

-Picture number/time display on/off

-Chapter number display on/off

-Programme display on/off

c

Cl

a:]

Cl

EJ

NUSE

CJ

a

6

Cl

CORR

CJ

GOnJ

~

4SEARCHt>

~

<I

STILL

t>

~

(I

PU.Y

t>

E:::::::::::I

e

--

-Search forward/reverse

(20

times normal speed)

-Goto (Picture

or

Chapter number)

-Input correction

-Digits 0-9 entry

-Fast forward/reverse

(3,

10,20 x normal speed)

-Slow forward/reverse (1/100 to normal speed)

-Fast/slow rate

+/-

-Clear memory

-Enter

-Standby

-Pause

-Start/Repeat

-Next

A/V

Euroconnector

Pin signal

1 audio

out

(right) 650 mV rms/1k

2 not connected

3 audio

out

(left) 650 mV rms/1k

4 audio earth

5 blue earth

6 not connected

7 blue

out

700 mV/75 n

8 player status (player in standby: 2

V,

player on : 12

V)

9 green earth

1O not connected

11

green

out

700 mV/75 n

12 not connected

13 red earth

14 earth

15 red

out

700 mV

/75

n

16 fast blanking: 2.5 V into 75 n (RGB status)

17 CVBS earth

18 RGB status earth

19 CVBS

out

1 V/75 n (also ects as sync

out

when

using RGB)

20

not

connected

21

socket earth

RGB

(TIL)

IN

socket

(DIN)

6-pole female connector, 270 degrees

1 Red signal

2 Green signal

3 Blue signal

4 Composite sync

5 Ground

6

Not

connected

(logic 0:0

-1

V,

logic 1:2.2.

-4.2

V.

Sync instability better

than

+/-

100 pm, interlaced, with

or

without equalising

pulses, negative going.)

RS232-C interface

Serial computer interface, in accordance with international

communication standards.

Full duplex

8 data bits, 1 stop bit, no parity

Data transmission speed may be set

to

1200/2400/4800/9600 baud according

to

the positions

of

the

two

baud rate dip switches (numbers 1 and

2)

at

the

rear

of

the player.

Baud rate

1200

2400

4800

9600

switch 1

UP

DOWN

switch 2

UP

DOWN

UP

DOWN

The player is fitted with a 25-pole female 0-connector with

the following pin connections:

2 (TxD)

3 (RxD)

5 (CTS)

7 (GND)

9

10

20 (DTR)

signal

transmitted data from player

to

computer

received data from computer

to

player

clear

to

send: a signal from computer

to

player indicating the computer is ready

to

receive data

(;;;:..+3

V means O.K.

to

transmit)

logic ground

+12 V/100

mA

-12

V/10

mA

data terminal ready: a signal from player

to

computer indicating that player is

ready

to

receive data

(;;;:..+3

V means O.K.

for

data)

SCSI interface

A computer interface in accordance with SCSI

standards. The player is fitted with a 50-pole

unshielded connector consisting

of

two

rows

of

25 male pins on 100 mil centres.

Single-ended cable pin assignments:

pin signal

2

-08(0)

4

-08(1)

6

-08(2)

8

-08(3)

10

-08(4)

12

-08(5)

14

-08(6)

16

-08(7)

18 -DB(P)

20 GROUND

22 GROUND

24 GROUND

26 *TERMPWR (not connected

to

internal

power

supply)

28 GROUND

30

GROUND

32 -ATN

34 GROUND

36 -BSY

38

-ACK

40 -RST

42 -MSG

44

-SEL

46 -C/D

48 -REQ

50 -1/0

Notes

All odd pins except pin 25 are connected

to

ground.

Pin 25 should be left open, but may be connected

to

ground.

A minus sign indicates active low.

Maximum cable length is 6 m.

,Address dip switches at rear

of

player. Dip switch in up

position = OFF. Switches 1-4 and switch 8 should be

OFF. Switches 5-7 determine the SCSI bus address

of

the player as follows:

address switch 5 switch 6 switch 7

0 OFF OFF OFF

1 OFF OFF

ON

2 OFF

ON

OFF

3 OFF

ON

4

ON

OFF OFF

5

ON

OFF

ON

6

ON

OFF

7

ON

(Factory setting: address

0)

Termination according

to

SCSI: 330 n TO

+5

V

220 n

too

v

If you have more than one device connected

to

the

host

computer via the SCSI bus, the SCSI bus termination in

the player has

to

be altered.

For details see* note in diagram

of

LV-ROM Interface

Module Wb.

CS 7 828

Remarks

Warnings

Modification levels

Adjustments

Demounting instructions

Service hints

Service tools

List of used symbols

Connections

of

semiconductors

Chapter 2

REMARKS

1. Care of the disc drive

The disc drive requires no special maintenance.

It is, however, recommended to clean the objective

lens from time to time with a piece

of

wadding, dipped

in

alcohol.

2.

Set-up

of the Service Manual

The set is composed

of

various modules (A through

Z).

The circuit diagrams, PCB layouts and parts lists

have also been classified per module.

a)

Circuit diagrams

Of

each module a functional circuit diagram has been

given, with the incoming signals drawn as much as

possible

at

the left-hand side and the outgoing

signals at the right-hand side. Each incoming and

outgoing signal has a unique name, the meaning

of

which can be read

in

the Signal listing.

If a signal enters

or

leaves the module, this takes

place via a connector (e.g.

682

=pin 6

of

connector

82) and via a letter indication in the line. This

indication mentions

to

which module the line is

connected.

If the letter indication in the line is the same as the

module on which the signal is present, the signal

remains on the module mentioned and, naturally, no

connector is drawn.

b) Oscillograms and voltages in the circuit diagrams

-The oscillograms in the diagrams have been

measured with a

dual-beam

scope with Delayed

Timebase PM3214. The set has been connected

to

a monitor by means

of

a SCART cable

Video : still picture, picture number 5530

(EBU colour bar, 75% saturation)

Audio

1:

normal play, picture numbers 6200 -6500,

1 kHz modulation

Audio

2:

normal play, picture numbers 6500 -6900,

1 kHz modulation

-The DC voltages have been measured with a

Digital Multimeter PM2524, still picture, picture

number 5530, unless stated otherwise.

c) PCS layouts

Most modules

in

the set have been equipped with

doublesided copper pattern and plated-through holes.

For each module a PCB layout is drawn, consisting

of

a drawing

of

the component side and

of

the soldering

side (chip side) with corresponding copper pattern.

d) Parts lists

For each module an electrical parts list is given,

stating the service code numbers

of

the specific

electrical components that have been applied on

the module.

The code numbers

of

the standard components

(ICs, transistors, diodes, standard resistors, etc.)

have been placed on a collective list in Chapter

5.

e) Service code numbers

of

the modules

In this Service Manual service code numbers for

the modules have

not

been mentioned. Please

consult you parts supplier.

3. Repair

on

modules

To

enable repair/adjustment on modules use can be

made

of

extension PCBs

or

extension cables. A

survey can be found sub Service Tools

in

this chapter.

4. Hidden switches

On

Analog 1/0 module U two switches have been

applied, hidden for the user.

The function

of

these switches is :

SK1

: +

11

V

or

RC5

signal at pin 8

of

the Euro

connector.

Factory adjustment is RC5 at pin 8 (switch

pressed out).

SK2 : ENCODED CVBS

or

NOT ENCODED CVBS

signal on CVBS OUT connector BNC3. The

factory adjustment is ENCODED (switch

pressed out).

Please consult the circuit diagram

of

Analog 1/0

module U for more details on these switches.

5. The optical deck

The optical deck

in

the disc drive is composed

of

various critical components and at the production

department adjusted by complicated alignment

equipment.

For the time being repair

of

the Deck Electronics and

of

the Laser Detection Unit by a service technician is

not allowed.

If a failure analysis reveals that the Deck Electronics

or

LDU

are defective, the entire deck should be

submitted for repair to the production centre via the

Central Repair Procedure

of

the Concern Service

Centre. Please inquire at your parts supplier's for this

procedure.

Repairs on the slide drive assy and the Automatic Tilt

Control (ATC) assy are possible. See the List

of

mechanical parts

for

the correct code numbers.

6. Coding of items

The coding

of

component items in the service printing

of

the PCB's can differ from the coding

of

the items in

the circuit diagrams (exept supply module

T).

On

the

PCB's, a letter/number coding has been used (e.g. R1,

C1) and in the diagram a 4 number coding (e.g.

3001

,

2001

).

The table below shows the conversion

between both coding systems.

Circuit diagram

4 number coding

2 001

T-Citem

nbr

Lcomponent

nbr

:

1 = Unit, battery

2 =capacitor

3 = resistor

5 = coil, trafo, cristal

6 = diode

7 = transistor, IC

Service printing on PCB

letter/number coding

C1

TLitem

nbr

Lcomponent

letter:

=U

=C

=R

=S,L,K

=D

= T,TS,1,IC

CS 7 818

WARNINGS

1.

Laser radiation

The Laser Detection Unit (LDU)

in

the optical deck has

been equipped with a semiconductor laser. This laser

emits invisible light which

is

focussed on the disc

by

the objective.

If the objective would

be

removed

in

case of repair,

the laser light exits from the objective aperture. Avoid

looking directly into the laser beam, as this might

cause permanent injury to the eye.

2.

Replacement of modules

Before replacing a module upon repair, first the mains

switch should

be

switched off. This should

be

done to

prevent damage to the circuits on the modules.

3. Service position of the set

If measurements or repair require that the set

is

placed on its side

(90°·

position), this may only

be

done when a

6"

test disc

is

played

on

the optical deck

and

the front loader has been removed. If a disc with

a larger diameter

is

used

(8"

or

12"),

the risk that the

disc will come loose from the turntable (motor)

and

cause injury to people

in

the vicinity will

be

too great.

Also ensure that the disc is always locked on the

turntable by the magnetic disc clamping piece (see

service tools).

In

the above-mentioned 90° position of the set not

all

signals will

be

present according to specification.

Adjustments and checks for correct functioning are

therefore only allowed

in

the horizontal position of the

set.

4. The 6" test disc

The

6"

test disc may only

be

played when the front

loader has been removed. With mounted front loader

playback of

8"

and 12" discs

is

possible.

MODIFICATION LEVELS

In

the entire set various modification levels have been

indicated.

1. Modification level of the set

The modification level of the set can

be

found at the

rear of the cabinet.

a) Change code on the type numberplate

Under the type number a letter and digit code

is

given

which looks as follows :

IA

HI

O

216

4

311

0 1 2 3

41

7 I '-.

\:

production change week

number serial number

centre code

The change code

is

preceded by the production

centre.

b) Modification level on yellow sticker

On

a yellow sticker a TM code is marked,

indicating the modification level,

in

this case TM3.

TM

14 7 10

13 16

5 8

11

14 17

6 9

12 15 18

2.

Modification level of the module

In

the circuit diagram: top right, under the name of the

module (e.g.

MOD

LEVEL

3).

On

the PCB:

in

the service printing at the component

side

( e.g.

~OO....,mJ........-4..-1

s..-1s..-11..-ls

......

19

.......

!o!).

The modification level is marked then.

3. Modification level of the software

in

the EPROMs

On

various modules EPROMs have been applied, that

have been programmed (see survey below).

module

Drive

Proc

(R)

Control (S)

*CPU (W)

item number

7204

7202

7201

7224

7247

7248

*= only for VP415

name

DRIVE

CONTROL

SYNC

DESCR.

LV DOS #1

LV DOS

#2

program number

3104 103 6803.4

3104 103 6804.4

3104 103 6808.0

3104 103 6807.0

3104 103 6805.2

3104 103 6806.2

The program number of the software has been

applied

on

a sticker on the EPROM.

The modification level

of

the software

is

the last digit

of the program number (behind the dot).

The modification level

of

the software

in

the Drive and

Control EPROMs can also

be

retrieved

by

means of

an

external computer. To achieve this

an

F-code

command "?=" should

be

sent to the disc drive (see

the directions for use, chapter F-CODE COMMANDS

: Revision level request).

The feedback

of

the disc drive

is

a

5-digit

code of the

software revision.

Digit 1 =0

Digit 2 =major level drive

Digit 3 = minor level drive

Digit 4 = major level control

Digit 5 = minor level control

The modification level of the Drive software will then

e.g.

be

1.5 (digit 2 . digit

3)

and

of the Control

software e.g. 1.4 (digit 4 . digit

5).

The relation with the modification level

in

the program

number

is

as

follows:

Drive

Control

mod. level progr.

number

3104 103 6803.4

3104 103 6804.4

mod. level software

revision

1.5

1.4

Each time a change takes place

in

the software, the

modification level will by raised

by

one.

A survey of the modification levels of the set, the

modules and the software can

be

found

in

the Service

Information, chapter

8.

r,~ 7

R?O

ADJUSTMENTS

1. General

For

each module an adjustment procedure is given

for

components that are replaced during repair.

If

an entire module is replaced, in principle adjustment

should not take place, with the exception

of

HF PROC

module

K,

VIDEO DO CORR module L and ANALOG 1/0

module

U.

Module K : in case

of

replacement, adjust R3043

(video ampl.)

Module L : in case

of

replacement, adjust R3050 (MTF)

Module U : in case

of

replacement, adjust R3305

(R-Y

gain) and R3315

(B-Y

gain).

Module B : in case

of

replacement, adjust R3305 and

R3315 on Analog 1/0 module

U.

When module

H,

K,

L

or

Z is replaced,

it

is advisable

to

check the CVBS OUT signal (NOT ENCODED) on BNC3

for

correct amplitude and correct VITS signals MBI and

MBIV. The CVBS OUT signal is described

in

adjustment

1

of

Ananlog 1/0 module

U.

The VITS signals are described in adjustment 2

of

Video

D.O. Corr. module

L.

For amplitude adjustments see Fig

2.1

The adjustments take place without connection

of

a

computer (video overlay)

or

external video source, unless

stated otherwise.

2. Required

To

perform the adjustments the following equipment is

required:

-Test disc 6"

or

8"

-

Dual-beam

scope with Delayed Timebase

If available: -vector scope

or

-

dual-beam

scope with

X-deflection

via

8-channel

(e.g.

PM3226P)

-Scope probes with 1:10 attenuator, preferable

FET probes

or

probes with a capacitance < 3pF.

-BNC

75n

terminator (4822 263 60037).

CS 7

821

GAIN

402

1

00

1

~

802

60

2

CS

-S/NS

N

S-CS

CS

-EXT

MTF

R3050

MTF

3L2

OEM-

BK

SYNC.

=-~-

I

rn

S

YNC

BOTTOM

411

11

1~L

COLOUR BURST

L___

SPECIAL

B

UR

ST

E

LE

CTRONIC

TI

MEBASE

CORRECTION

TO

G

ENL

OCK

MODULE

~

REFERENCE

SOURC

E

D

FI

RAMP

-E

N

TXT

-WH

CV-TB

M

TO

ETBC

- C

MODULE

[]

CV-EXT

9C2

501

401

203

GEN

ERA

TOR

TXT

- WV 103

REFV

70

1

REFH

80

1

CBL

90

1

CS

REF

102

CLP

60

1

H/2

302

BF

202

VIDEO ADJUSTMENTS

·~

-~·.,.

I

=i_J

IJll

SYNC BOTTOM

~

L COLOUR BURST

EXT

A

UD

I

AUDI

3AI

4a

U1

Al- E/i

EXT AUD2 1

au1

AUD2

!

Al

4CU1

A2-E/i

lcUl

RGB

DE

CODI

NG

SCI 9CI 8C2 IOCI

CV/

CS

CV-f

/i B

P-CLP

VBL

8a

U1

LUM

10

83

9aU

1

SC

R

2B3

17

aU1

RGB G

3BI

MATR

IX 3A3 1

7c

U1

B

4B3 18aU1

CBL

1

oau

1

REFH

1

0cU

1

G

Fi

g.

21

ANALOG

Ua

-

~

.,,

~

..

...

I

:ij

llrm

SYNC

BO

TTOM

~

L

COLOU

R BURST

(75o

TE

RMINATED)

AUD1

0N

A

U020N

1/

0

3aU1

A- SYNT

19

cU1

eves

NOT SK2

SW

I

TCH

ENC i

ENC l

TXT

-W

H TXT

-WV

Uc

EN

C

eves

IN

S-

TXT

Ub

19

ADDER

eves

BPCLP

1

2i:tU

1 12cUI

Ua

H/2

BF

R MIX

1u2 9YI

IU3

15

G

VIDEO

G- MIX G

3U2

7YI ) MI

XER

7Y2 3U3

8 MIX

5U2 5YI 5Y2 5U3

CBL

7U2

3YI

CS

5/NS cs

s,NS

REFH

IY

2 9U3

>--r<

SaUI

9U2

!YI

NS

CS

NS

CS

3Y

2

7U3

>--r<

11

cu1

COMPUTER

RGB

CS

(ONLY

VP41

5)

4

Y5

3Y5

2Y5

PAS

02477

VPO

VP!

VP2

T 08

715

CS 7 822

DEMOUNTING INSTRUCTIONS

PUSHING OUT

THE

DISC TRAY

~

------

' ---

-----=-----

_

Ji>

1

···-

...

_o

_~----.

---------

·····@

* short size

DEMOUNTING UPPERCASETAND FRONTLOADER screws dot marked

DEMOUNTING OPTICAL DECK

CS

7 823

1

~

DEMOUNTING DI

SC

TRAY

ASSY

MOUNTING

DIS

C T

RAY

ASS

Y

"'-

·

2

'-.._

Oo

g'

Oo

3

0

~

4~

a.-..

~

--

2

1 a

g'

~o 3

~

r1

.[..,,)

Oo

. . -

0060000

.

-·

:,0

~~~~~~

~~~

ij

-

~o

O~

r • ~ O

Oo

0

Oo

0

o J 1

Oo

00

6o

00

6oo

0

l

oo

O(lo

ooo

o0

~~~J

0

00

01

DEMOUNTING ANALOG 1/0 MODULE U

REMOV

IN

G SPEEDNUT

screws dot marked

.,

..

@

- I • ,

T

•

_J.·

ON

LY

FOR

VP415:

DEMOUNTING SANDWICH

PART

EVA.00317

T28/710

SERVICE HINTS

WARNING

ESD

,.

~

All ICs and many other semi-conductors are

susceptible

to

electrostatic discharges (ESD).

Careless handling during repair can reduce life

drastically.

When repairing, make sure that you are connected

with the same potential as the mass

of

the

set

via a

wrist wrap with resistance.

Keep components and tools also at this potential.

The photodiodes and the laser are more sensitive

to

electrostatic discharges than MOS

IC

's.

Careless handling during servicing may reduce life

expectacy drastically.

For this reason care should be taken that

dur

ing

servicing the potentials

of

the tools and yourself are

equal to that

of

the screening

of

the set

Chip components {SMD)

Chip components have been applied in the set. For

the insertion and removal

of

chip components see the

figure below.

GENERAL

DISMOUNTING

VA

C

UU

M PISTON

~~~

~E

~\,,

~4822

395

10082

e.g.

WE

LL

ER

~~

-:'.'.

~~~~

~

'=

~ ~ = ~

SOLDER TIP PT-H7

OR

SOLDERING

IR

ON~

SOLDER WICK

48

22

321 4

00

42

E~~~'==

~

:'.:~~

=~

A

e.g. A

PA~EZ

ER

S B

HEA

TIN

~~~EATI

NG

I 4

CHIP

COMPO

NENT

SOLDER . SO

LD

ER

c:B:j~CO

P

PERT

RACK

P.C.B.

I

GLUE

SOLDERING IRON

SOLDER WI

CK~

CLEA

NIN

G

PRECAUTIONS

C

MOUNTING

SOLDER

0 0.5 - 0.8 mm

.PRESSURE

+

SOLDERING TIME SOLDER

< 3 sec/side 0 0.5 - 0.8 mm

PR

ESSURE

+

EXAMPLES

A

B

SOLD

ERING

IR

ON

~

(#

0$"

SER

VI

CE PACKAGE

SOLDERING

IRON

SOLDERING

M

""~

~

27 012C

12

CS 7 824

SERVICE TOOLS

TEST DISC

6"

4822 397 30156

TEST DISC 12" 4822 397 30119

TEST DISC

8"

4822 397 30118

TORX SCREW DRIVER SET

4822 395 50145

REPAIR SET 4822 310 31198

CONTAINING:

2x

---

EXTENDER PRINT 64P (7949.1)

4822 263 70208

CS 7 825

2x

4"';:

:...:.;;;:=

--

EXT. ASSY 6P

(7951

.

1)

4822

321

22268

~.,........- 2xEXT. ASSY 10P (7950.1)

4822

321

22267

2x

.

---

COUPLING PIECE 10P (7953.2)

4822 267 50704

2x

----

COUPLING PIECE 6P (7952.2)

4822 267 40712

1x

_,,

_::...._

___

EXT. CABLE 12P (7955.

0)

4822

321

22269

"'-

1x

COUPLING PIECE 12P (7954.2)

4822 267 50705

~

1x

COUPLING PIECE

VID MIX (7957.2)

4822 267 50707

•

1x

DISC CLAMPING PIECE

4822 532 60775

.

/ PIN 3 AND 4 INTERCONNECTED

~

1x

·- FRONTLOADER SIMULATION

4822 267 50706

41

832

A

APPLICATION OF SERVICE TOOLS

.----

TEST DISC

6"

__.---

DISC CLAMPING PIECE

6"

TEST DISC

~;;,,,-:;

;:.__

EXT. ASSY 6P

~

=----

EXT.ASSY10P

EXTENSION OF MODULE (FLEX)

EXT. ASSY 6P

EXT. ASSY 10P

EXTENSION OF MODULE (STEADY)

--

COUPLING PIECE 12P

---

EXT.

CABLE12P

EXTENSION OF MOTOR MODULE

FRONT LOADER

SIMULATION

:.._.------

EXTENDER PRINT 64P

----

EXTENDER PRINT 64P

I

EXTENSION OF DRIVE/CONTROL MODULE

COUPLING PIECE

VID MIX

ONLY VP415

SHORT CIRCUITING OF VID MIX SIGNALS

41

833

B

CS 7 826

LIST OF USED SYMBOLS

......

~

--u--

D~

--n--

a =2.5 V

b =

4V

c =6.3 V

d = 10 V

e = 16 V

f

=25

V

CS 7 827

Safety resistor

Veiligheidsweerstand

Sicherheitswiderstand

Resistance de securite

0.2 W

,;;;

220 kO -

5%

(CR16) > 270 kO -10%

0.

33

W < 1 MO -

5%

(SFR25) > 1

MO

-10%

0.5 W

,;;;

1

MO

-

5%

(CR37) >1

MO

-10%

0.33 W · \1R25 -

1%

0.5 W,;;; 1 MO -

5%

(CR52) > 1

MO

-10%

1 W

,;;;

1.6 MO -

5%

(CR68) > 1.6 MO -10%

0.5 W High voltage resistor

(VR37) Hoogspanningsweerstand

Hochspannungswiderstand

Resistance haute tension

Safety capacitor

VeiIigheidscondensator

Sicherheitskondensator

Condensateur de securite

Ceramic plate capacitor

Keramische plaatcondensator

Keramischer Platten-Kondensator

Condensateur ceramique plaquette

l

Metalized polyester flat film capacitor

Gemetalliseerde polyester condensator

Metallisierter Polyester-Flachkondensator

Condensateur plat afeuille de polyester

metallisee

Miniature electrolytic capacitor

Miniatuur electrolytische condensator

Miniatur-Elektrolytkondensator

Condensateur electrolytique miniature

g =

40

V r =

250

V

h =

63

V s =

350V

j =100 V u = 400 V

I =125 V v =

500

V

m =150 V w = 630 V

q =200 V x =1000 V

y =1600 V

_ft_

@-

ill

-0

0

~

ID

z

ID

z

8

=@}-

Sawtooth pulse converter

Zaagtand-puls omzetter

Siigezahn

lmpulsumformer

Convertisseur d'impulsions en dents de scie

Pulse-code modulation (6-unit binary

co

l:l

e)

Puls

code

modulatie (6 bits code)

lmpulscode-Modulation

(6

Bits-code)

Modulation

code d'impulsions (code 6 bits)

Puls-duration modulation

Pulslengte modulatie

lmpulsliinge-Modulation

Modulation

de duree

d'impulsion

Sync separator

Sync scheider

Sync-Trenner

Separateur

sync

FM

detector

FM

detector

FM

-Detektor

Detecteur

FM

Phase

discriminator

Fasediscriminator

Phasenvergleich

Discriminateur de phase

Detector

Detektor

Detecteur

Level detector

Niveau detector

Niveau-Detektor

Detecteur de niveau

Phase-changing network

Faseverschuiver

Phasenverschiebung

Circuit

de

dephasage

Rejection

filter

Bandsperfilter

Bandsperrefilter

Filtre de suppression

·Bandpass

filter

Band-doorlatend filter

Bandpassfilter

Filtre passe-bande

Low-pass

filter

Laag-doorlatend filter

Tiefpassfilter

Filtre passe-bas

Mixer stage

Mengtrap

Mischstufe

Etage melangeur

-EJ-

J

l_

t>-

High-pass

filt

er

Hoog-doorla~end filter

Hochpassfi

lt

er

Filtre passe

-haut

HF generat

or

HF generat

or

HF-Generat

or

Generateur HF

Sawtooth generator

Zaagtandgenerator

Siigezahngenerator

Generateur en dents de scie

Square wave generator

Pulsgenerat

or

Rechteckgenerator

Generateur d'impulsions

rectangulaires

Delay element

Vertragingselement

Verzogerungselement

Element aretard

Limiter

Begrenzer

Limiteur

Positive-going step

function

Positieve flank

Ubergang von tief zu hoch

Fonction

de

palier en sens positif

Negative-going step

function

Negatieve flank

Ubergang von hoch zu

tief

Fonction

de

palier en sens negat

if

Emitter

follower

Emitter volger

Emitter fol

ger

Emetteur suiveur

Automatically controlled

amplif

i

er

Automatisch gestuurde versterker

Automatisch gesteuerter Verstiirker

Ampl

ifi

cateur

acommande automatique

Mixer

stage

Mengtrap

Mischstufe

Etage melangeur

Amplifier

Versterker

Verstiirker

Ampli

Differential amplifier

Verschilversterker

Differentialverstiirker

Ampli differential

Amplifier

with open

output

Versterker met open uitgang

Verstiirker

mit

offenem ausgang

Ampli a sortie ouverte

Electronic

switch

Electronische schakelaar

Elektronische Schaller

Commutateur

electronique

Electronic switch

Electronische schakelaar

Elektronischer Schalter

Commu

ta

teur

electronique

Common

contro

l block

Gemeenschappel

ijk

controleblok

Gemeinschaftlicher Kontrolleblock

Bloc de

contro

le commun

SRG

Q

()

G

CE

00

Shift

regis

ter

Schuit

register

Schieberegister

Registre adecalage

Output

Uitgang

Ausgang

Sortie

Open collector out

put

Open kolle

ktor

uitgang.

Offenen Kollektor ausgang

Sortie collecteur ouvert

Command input

Kommando

ingang

Kommando

eingang

Entree

ord

res

Chip

enable in

put

Chip

enable ingang

Chip

enable eingang

Entree

chip

validation

Bid

ir

ectional

Tweezijdig gevoelig

Doppelseitig e

mpf

indlich

Bidirect

ional

-D-

'lnvertor

Invert

er

Inverter

lnvertisseur

D

Or

gate

Of-poort

Oder

Porte ou

G

Norgate

"

No

r"

"

No

r"

Porte

Non-ou

0 And gate

En-poort

Und Gatter

Porte Et

D-

Nandgate

"Nand"

Porte "

Non-Et"

-CT

Buf

fer

Buffer

Puffer

Tampon

A B X

0 0 0

0 1 1

1 0 1

1 1 1

A B X

0 0 1

0 1 0

1 0 0

1 1 a

1

x

0 0 0

0 1 0

1 0 0

1 1 1

1]

.X

0 0 1

0 1 1

1 0 1

1 1 0

fi

Inverting

buffer

lnverterende

buffer

lnvertierender

puffer

Tampon invertisseur

fi

Bu

ff

er with open

output

Buf

fer met open uitgang

Puffer mit offenem ausgang

Tampon asortie ouverte

Module- and connector

lay-out

Signal listing

Wiring diagram

Blockdiagram Control routes

Blockdiagram AUDIO/VIDEO signal path

Blockdiagram Servo

Chapter 3

PLAYER

I U3

10 1 11

~D

ZZ6

~D

zz1

ANALOG 1/0 (ill

.;

~

~~

1

~·

10

1

-

Ul

32

=:!

~ 1

Jl

1

D

C3

6

U

03

10

3

10

I-

G

1 ~o

-1 Cf)

83

::J

(.)

Al C2 0

lL

I-

1

I-

10

I-

10

1

10

82

I-

1

@]

02

@]

E2 El

@

~~

'I I•

10

I I'

§

cj

[I]

suD

E

0 a: D

RIV

E

cj

a: ::J

Cl.

0 F2 F3

0

[D

Cf) •

i------11

a:

l')

0 1 1

12

Cl.

a:

w

LL

0 0 w MOTOR+SEQUENCE 0

i5 6 >

10

a:

10

-

I-

-

::J 11 I 10 GEN LOCK

@]

<{

Gl

,B·I

Cl

01

-

,I

j 10

1 ETBC B

[E]

1

I-

Hl

A{

-

1 1

, I I

,o

ETBC C

[TI

1

11

6

NI

I

, 1

110

DISPL.+KEYB.

~

1 1

L{

I-

6

U

·2

6

1 6

U

M2

R2

1 B

...J

10

JJ

0

I-

a:

f-

a C z

32

0

(.)

Ml

32

u

1

II

-

-.

~

0 L2

cj

0

cj

a:

Cl.

0 -[II

S1

a: 10 w

Cl.

>

...J

a:

lL

<{

0

I i5

<{

~

B a:

6

a:

J 0

'-

(.)

1

0

1 w Rl

0

>

JJ

a C

32

F1

10

I 1 ,

1 1 1

10

G2

,L-=:J.

01

H2

I

10

12

IR

-

.~EC.

, 1 I 10

I

NNI

\J

B

>-

...J

Cl.

::J

Cf)

"~ Wl

1

,o ~ Xl

1

6

U:

2

1-

10

E2

T1

-1

3

Oo,

1

MODULE

AND

CONNECTOR

L

AY

OUT

DECK

ELE

CTRONI

CS

@

0

M

12

F3

1

In

z5

,o

u

FR

ONT-LOADER

'----------

--,

I

\

'

\

PRS0

17

11

TD8

711

D

3

P2

1

FRONT-

LOADER

0

\

'\

CS 7 829

ALPHABETICAL SIGNAL LISTING

-(8-Y)

Colour difference

8-Y

DLCF Data left CIM to FIL

03

Stepping motor coil 3 (Yellow) SPI Slide position indication

OV

= inwards

-(R-Y)

Colour difference

R-Y

OLEN

P-bus

data line enable +5V = active 03,4 Common 3,4 (Red)

SP-POS

Spot position

+12 Switched +12V DO-INH Dropout protection inhibit +12V = active

04

Stepping motor coil 4 (Grey) SSDE Symbol sy

nc

DEMOD

to

ERCO

+12SB +12V standby supply

DR

Disc reflection +5V = refl R Red video signal

ST-ST

Start-stop

switch OV = start

+5 Switched +5V DRCF Data right CIM

to

FIL RADACT Radial actuator drive signal STB Strobe

OV

= active

+5SB +5V standby supply DTR Data terminal ready (RS232) RAD-ER Radial error STBY Standby command

OV

= standby

0-RPM

0 RPM status

OV

= 0 RPM DTR 3 DTR RAD-FS Radial filter select

OV

= low pass

STBY-BUT

Standby button command

-12

Switched

-12\/

DTR 1 DTR RAMP-EN Ramp enable pos.pulses

STR1

Strobe 1

(16

bit word)

-12SB

-12V

standby supply DTR 2 DTR

RC5

IN(B) RC5 input SCART STR2 Strobe 2

(8

bit word)

2-PPR

2 pulses per revolution pos.pulses DUMP Dump

on/off

switch

OV

= dump on

RC5

RC5 commands SYNC

IN

External sync input signal

400Hz PAL PAL switching signal DUMP-ON Data dump

on/off

+12V = on RC5-INT RC5 from

IR

receiver SYNC OUT Sync output signal

-5SB

-5V

standby supply EJECT Eject button

OV

= active RC5-SCART

RC5

commands SCART TANG-ER Tangential error

80-FH

80 times horizontal freq. ELCF Error flag left

RC5-0UT

RC5 output control

Ti

Tray inside

OV

= inside

A1-E/I

Audio 1 internal/external +12V =

ext

ERCF Error flag right

RCIR

RC

input IR/SCART +5V =

IR

TILTOK Tilt in position

OV

= in position

A2-E/I

Audio 2 internal/external +12V =

ext

ER-DIS

Error display

OV

= active

RD

Read TLS Tilt loop sw

it

ch +5V = closed

ALE Address latch enable EXT AUD 1 External audio 1

ADEN

S-bus

read enable TPI Track position

A-SYNT

Synthesised audio

on/off

+12V = on EXT AUD 2 External audio 2 RD-STRT Read start pulse text insert +5V = inactive indication(

+6/-6V)

-6V

= on track

ATN Attention

OV

= active

FAS-REL

Phase relation REF-CLP Clamp TSP Terminal speed

AUD1

Audio 1

FI

Field identification

REFH

Horizontal reference pos.pulses TTM Turntable motor

on/off

+5V = on

AUD1+2 Audio 1 + audio 2 FOCACT Focus actuator drive signal

REFV

Vertical reference pos.pulses TX/RX Transmit/receive data

OV

= receive

AUD10N Audio 1 on/off +12V = on FOC-EN Focus enable +12V = enable REPLAY Replay switch on/

off

OV

= replay TXD Transmit data (RS232)

AUD2 Audio 2 FOC-ER Focus error

RESI

Reserved input dipswitch

TXD1

TXD

AUD20N Audio 2 on/off +12V = on FOC-IND

In

focus indication

OV

=

in

focus

RESI

1 Reserved input drive TXD2 TXD

B Blue video signal

FPI

Focus position indication

-12V

=

in

position

RESO

1 Reserved output drive TXD3 TXD

BF Burst flag pos.pulses FRLOCK Frame lock +5V = in lock RESUPI Reset

UPI

TXT-IW

Teletext insertion window

8-MIX

Blue video signal from mixer FSDE Frame sync DEMOD to ERCO RGB-:STA RGB status signal SCART TXT-WH Teletext w

in

dow

horizontal pos.pulses

BP-CLP

Bypass clamp pos.pulses FSEC Frame sync ERCO

to

CIM . RLS Radial loop switch

+OV

= closed

TXT-WV

Teletext window vertical pos.pulses

BRA Baudrate select A

OV

/ +5V G Green video signal

A-MIX

Red video signal from mixer UNEC Unreliable data ERCO

to

CIM

BAB Baudrate select B

OV

/ +5V GLC Genlock clock (4.5MHz)

A-TTL

Red video signal TTL level (Error flag)

8-TTL

Blue video signal TTL level

GL-CL

Genlock clock (4.5MHz)

RXD

Recieved data (RS232) V/

C-TXT

Video/control text insert +5V = video text

BURST-ER Burst error signal

G-MIX

Green video signal from mixer

RXD1

RXD VBL Vertical blanking neg.pulses

CBL Composite blanking pos.pulses

G-TTL

Green video signal TTL level RXD2 RXD

VI-A/D

Video analogue/digital +12V = analogue

CLCF Bit clock CIM

to

FIL H/2 PAL 8kHz pulse RXD3 RXD VI-DOP Video dropout pulse

CLOE Bit clock DEMOD to ERCO HALL

C-

))

SC

Sandcastle pulse pos.pulses VMANCH Vertical sync neg.pulses

CLEC Bit clock ERCO

to

CIM HALL

8-

))

SCANLS Scan loop

sw

it

ch

OV

= active VOBN Video background insertion

OV

= active

CLOX

LV-ROM

decoder master clock HALL C+

))

SCL IIC bus clock

vow

Video character insertion +5V=

active

CLP Clamp pulse pos.pulses HALL

B+

))

SCLT

P-bus

clock

VPO

Video mixer control 0

CL-RAD

Clipped radial

-12V

/ +12V HALL AV+ »signals from HALL elements SCSI Small computer system

VP1

Video mixer control 1

CL-VID

Clipped video

OV

/ +12V HALL

A-

» interface VP2 Video mixer control 2

CLV-TC

CLV trackcross +5V = active HALL A+ »

SD

0-7

S-bus

data

VR

Vertical reference

COMM1 Commutation coil 1 +5V = on HALL

CV-

»

SDA

IIC bus data WDOGRS Watchdog reset +5V = reset

COMM2 Commutation coil 2 +5V = on HFATBC

HF

audio timebase corrected SDAT

P-bus

data WINDOW

S-bus

window

COMM3 Commutation coil 3 +5V = on

HF-AUD

HF

audio SEL Selection WR Write

COMM4 Commutation coil 4 +5V = on

HF-OUT

1

HF

signal disc drive SL-PWR Slide power low/high +5V = low

WR-CLK

Write clock text insert +5V = inactive

CP-1

Course pulse 1

OV

= active

HF-OUT

2 HF signal sandwich SMF Switch mode frequency 17,6 kHz WREN

S-bus

write enable

CP-2

Course pulse 2

OV

= active HMANCH Horizontal sync neg.pulses

CS Composite sync HOR. BL. Horizontal blanking adjustment

CS

1-8

Chip select 1 up

to

8

HW-TEST

Hardware test

CS-EXT

External comp. sync input

INS-TXT

TXT signal

for

insert

CS-REF

Composite sync reference pos.pulses IRQ Interrupt request

CS-S/NS

Standard/non standard CS

IR-REC

RC5 from

IR

receiver

select +5V = standard

LA

Laser

on/off

OV

= off

CS-TTL

Comp. sync TTL level

LA-STA

Laser status

OV=

on

CTS Clear

to

send (RS232)

LOI

Load index

CTS1

CTS

LED1

LED drive

CTS2 CTS LED2 LED drive

CTS3 CTS

LMOT-L

Load motor left +5V = on

CV/CS CVBS/Comp. Sync select +12V = CVBS

LMOT-R

Load motor right +5V = on

CVBSIN

External CVBS input signal LPO Line pulse out

CVBS Composite video/burst/sync LPWM Line pulse width modulated

CVBS OUT CVBS output signal LUM Luminance

CVBS2 Disc CVBS without special burst MCES Motor control error signal

CVBS-INT Internal CVBS MCO Motor control output

CV-OEM CVBS demodulated

MCO-EN

MCO enable +12V = active

CV-DOC CVBS dropout corrected

MEM-SU

Memory start up +5V = active

CV-E/1 CVBS external/internal select +12V = external

M-LOCK

Motor lock

CV-EXT

External CVBS

MOTC

))

CV-TBC

CVBS time base corrected

MOTS

»Motor drive signals

CV-TBM

CVBS time base measurement

MOTA

))

CX-OFF

ex

on/off

+12V =

off

MTF Motional transfer function

DADE Data DEMOD

to

ERCO NPL Normal play forward +5V = active

DA-DUMP

Data disc dump

NS-CS

Non standard composite sync

DAEC Data ERCO to CIM

NS-VID

Non standard video indication +12V = NSV

OAK

S-bus

data acknowledge OBF Output buffer full

DAV

S-bus

data available OBS Output burst switch NTSC +12V = active

DB/STAT Databit/status text insert

OV

= busy PWM Pulse width modulated

OEM-BK Demodulator burst key pos.pulses

01

Stepping motor coil 1 (Yellow)

DEMV Demodulated vert. pulse

01,2

Common 1,2 (Red)

Q2 Stepping motor coil 2 (Grey)

f"C

·.7

0'ln

LaserVision VP415 User manual

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