Panasonic C1381 Manual de usuario

ORDER

NO.

KME9010170C3

ervice

Manual

Color

Computer

Display

C1381

Chassis

No.

KMX-F407E

CONTENTS

Page

SAFETY

PRECAUTIONS.

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CONTROL

LOCATIONS

AND

OPERATIONS...

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SPECIFICATIONS

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DISASSEMBLY

INSTRUCTIONS

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GENERAL

CONNECTION

APPLICATIONS.

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ELECTRONIC

CIRCUIT

DESCRIPTION

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SCHEMATIC

DIAGRAM

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MECHANICAL

PARTS

LOCATION.

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REPLACEMENT

PARTS

LIST

.......2

200

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Matsushita

Electric

Industrial

Co.,

Ltd.

Central

P.O.

Box

288,

Osaka

530-91,

Japan

Panasonic.

Specifications

are

subject

change

without

notice.

IMPORTANT

SAFETY

NOTICE

There

are

special

components

used

Panasonic

Computer

Display

which

are

important

for

safety.

These

parts

are

shaded

the

schematic

diagram

and

the

replacement

parts

list.

It is

essential

that

these

critical

parts

replaced

with

manufacturer's

specified

parts

only

prevent

X-RADIATION,

shock,

fire,

other

hazards.

not

modify

the

original

design.

ABBREVIATIONS

USED

THIS

MANUAL

ITC

Integral

Tube

Component

AVR

Automatic

Voltage

Regulator

FET

Field

Effect

Transistor

CRT

Cathode

Ray

Tube

Deflection

Yoke

FBT

Flyback

Transformer

Convergence

Yoke

AFC

Automatic

Frequency

Control

MOS

Metal

Oxide

Semiconductor

Variable

Resistor

SAFETY

PRECAUTIONS

GENERAL

GUIDELINES

Use

isolation

transformer

the

power

line

and

supply

troubleshoot.

When

servicing,

observe

the

original

lead

dress,

especially

the

lead

dress

the

high

voltage

circuits.

short

circuit

found,

replace

ail

parts

which

have

been

overheated

damaged

the

short

circuit.

After

servicing,

ensure

that

all

the

protective

devices

such

insulation

barriers,

insulation

papers,

shields,

and

isolation

R-C

combinations,

are

properly

installed.

Before

turning

the

display

on,

measure

the

resistance

between

B+

line

and

chassis

ground.

Connect

side

ohmmeter

the

B+

lines,

and

side

chassis

ground,

Each

line

should

have

resistance

than

the

following

specifications:

B+

Line

Minimum

Resistance

370k

12V

164

15V

330k

20V

680

25V

14k

100V

Potentials,

high

24.5kV

are

present

when

this

display

operation.

Operation

the

display

without

the

rear

cover

involves

the

danger

shock

hazard

from

the

display

power

supply.

Servicing

should

not

attempted

anyone

who

not

thoroughly

familiar

with

the

precautions

necessary

when

working

high

voltage

equipment.

Always

discharge

the

anode

the

picture

tube

the

display

chassis

before

handling

the

tube.

After

servicing,

perform

the

leakage

current

checks

prevent

the

customer

from

being

exposed

shock

hazards.

LEAKAGE

CURRENT

COLD

CHECK

Unplug

the

cord

and

connect

jumper

between

the

two

prongs

the

plug,

Turn

the

display

power

switch.

Measure

the

resistance

value,

with

ohmmeter,

handling

26.0kV

without

causing

X-

Radiation.

NOTE:

It is

important

use

accurate,

periodically

calibrated

high

voltage

meter.

Slide

the

Brightness

contro!

minimum.

between

the

jumpered

plug

and

each

exposed

Measure

the

high

voltage.

The

meter

reading

should

metallic

cabinet

part

the

display,

such

screwheads,

indicate

24.5

O.5

kV.

the

meter

indication

terminals,

control

shafts,

handle

bracket,

etc.

When

out

tolerance,

immediate

service

and

correction

exposed

metallic

part

has

return

path

the

chassis,

required

prevent

the

possibility

premature

the

reading

should

between

240

and

5.2

MQ.

component

failure.

When

exposed

metal

does

not

have

return

path

the

prevent

X-Radiation

possibility,

essential

chassis,

the

reading

must

oo,

LEAKAGE

CURRENT

HOT

CHECK

(See

figure

1.)

Plug

the

cord

into

the

outlet.

NOT

use

isolation

transformer

for

this

check.

Connect

1.5

kQQ,

watts

resistor,

parallel

with

0.15

capacitor,

between

each

exposed

metallic

part

use

the

specified

picture

tube.

HORIZONTAL

OSC.

DISABLE

CIRCUIT

TEST

WARNING:

This

test

must

made

final

check

before

the

set

returned

the

customer.

With

rear

cover

removed,

supply

nominal

220V

and

connect

host

computer

the

set.

the

set

and

good

earth

ground

such

water

pipe,

Turn

the

power

switch

and

adjust

the

monitor

shown

figure

controls

the

normal

position.

Supply

full

screen

‘‘H”

characters

from

the

host

Leakage

Current

Hot-

Check

Circuit

computer.

VOLTMETER

Turn

R826

(B+

Adj.)

fully

counterclockwise.

Connect

short

jumper

between

TP503

and

ground.

Turn

R826

(B+

Adj.)

slowly

clockwise.

0.15uF

Confirm

that

the

picture

fails

out

horizontal

sync.

[ese

the

test

fails,

the

Horizontal

Osc.

Disable

Circuit

Neen

menae

Seopa

eect

GaBUne

not

operating

and

must

repaired.

era

Mapas

Refer

the

Horizontal

Oscillator

Disable

Circuit

Figure

Repair

Procedure.

After

confirmation

this

Test,

remove

the

short

jumper

Use

voitmeter,

with

1000

ohms/volt

sensitivity,

measure

the

potential

across

the

resistor.

Check

each

exposed

metallic

part,

and

measure

the

voltage

each

point.

Reverse

the

polarity

the

plug

the

outlet

and

repeat

the

above

measurements.

The

potential

any

point

should

not

exceed

0.75

volt

RMS.

leakage

current

tester

(Simpson

Model

229

equivalent)

may

used

make

the

hot

checks.

Leakage

current

must

not

exceed

0.5

milliamp.

measurement

Outside

the

specified

limit,

there

and

readjust

B+

voltage

100V.

This

circuit

must

operative

before

the

set

returned

the

customer.

HORIZONTAL

OSC.

DISABLE

CIRCUIT

REPAIR

PROCEDURE

Connect

voltmeter

between

the

cathode

D553

and

chassis

ground

the

main

board.

approximately

13.6V

not

present

the

anode,

find

the

cause.

Check

D553

and

R534.

;

Connect

voltmeter

between

the

cathode

D555

possibility

shock

hazard,

and

the

monitor

should

;

and

chassis

ground

the

main

board.

approximately

repaired

and

rechecked

before

returned

the

;

13V

not

present

the

cathode,

find

the

cause.

;

pas

Check

R566,

R567,

C560,

D553

and

R534.

X-RADIATION

Repeat

step

procedure.

approximately

13V

WARNING:

The

potential

source

X-Radiation

the

present

the*cathode,

check

D555,

and

IC5002.

display

the

high

voltage

section

and

the

When

the

circuit

repaired,

perform

the

horizontal

picture

tube.

When

using

picture

tube

test

jig

for

service,

ensure

the

jig

capable

oscillator

disable

circit

test

again.

CONTROL

LOCATIONS

AND

OPERATIONS

CONTROL

LOCATIONS

(Front

View)

;

==]

=i——O

POWER

Switch

PUSH

POWER

Indicator

Front

User

Controls

@®

Contro!

©)

V-SIZE

Control

H-CENTERING

Control

(Rear

View)

Inlet

OPERATIONS

CONTRAST

Control

BRIGHTNESS

Control

H-SIZE

Control

Figure

Rear

User

Controls

Signal

Cable

Figure

POWER

Switch

Push

turn

the

display

on,

and

push

again

turn

the

display

off.

When

the

display

on,

the

power

indicator

lights.

CONTRAST

Control

Adjust

the

display

for

proper

contrast

level.

(White

level)

BRIGHTNESS

Control

Adjust

the

display

for

proper

brightness

level.

{Black

level)

H-SIZE

Control

Adjust

the

display

for

proper

horizontal

size.

This

control

has

click

position

which

gives

the

proper

horizontal

size

for

[BM

personal

computer

standard

video

boards.

H-CENTERING

Control

Adjust

the

display

for

proper

horizontal

position.

This

contro!

has

click

position

which

gives

the

proper

horizontal

position

for

1BM

personal

computer

standard

video

boards.

©)

v-SIZE

Control

Adjust

the

display

for

proper

vertical

size.

This

control

has

click

position

which

gives

the

proper

vertical

size

for

IBM

personal

computer

standard

video

boards.

V-CENTERING

Control

Adjust

the

display

for

proper

vertical

position.

This

contro!

has

click

position

which

gives

the

proper

vertical

position

for

[BM

personal

computer

standard

video

boards.

—

SPECIFICATION

SCOPE

;

The

purpose

this

specification

describe

the

cabinet

type

color

display,

which

Multi

Scan

Rate

type.

MECHANICAL

DESCRIPTION

2-1.

Dimensions

Width:

13.9

in,

(354

mm)

Depth:

14.8

in.

(375

mm)

Height:

14.4

in.

(366.5

mm)

2-2.

Weight

Monitor

only:

25.3

Ibs

(11.5

kg)

Monitor

packaged

for

shipment:

28.2

Ibs

(12.8

kg)

CONSTRUCTION

3-1.

Outline

See

220

240V

VIDEO

~----

CONTR

CONTRAST

Boece

BRIGHTNESS

SIZE

CENTER

Vv.

SIZE

CENTER

REAR

FRONT

Figure

3-2.

CRT

Characteristics

Size:

inch

diagonal

(13

inch

visual)

Matrix:

Black

opaque

matrix

Matrix

type:

Negative

guard

band

Faceplate

type:

Non-glare

surface,

Tinted

screen

glass

CRT

part

No.

PAWD1C1381H*

Phosphor:

P22

Persistance:

Short

Array:

Triangular

dot

trios

Trio

pitch:

0.28

typ.

center

This

No.

(PAWD1C1381H)

1TC

NO..

CRT

supplied

ITC.

ITC

Integral

Tube

Component

(CRT

with

and

CY)

POWER

SWITCH

ENVIRONMENTAL

CHARACTERISTICS

4-1.

Temperature,

Humidity

and

Altitude

4-1-1.

Operating

Conditions

Temperature:

+32°F

+104°F

(0°C

+40°C)

Humidity:

90%

(no

condensation)

Altitude:

10,000

Feet

max.

(3.048m

max.)

4-1-2.

Non-Operating

Conditions

Temperature:

—40°F

—149°F

(-40°C

+65°C)

Humidity:

90%

(no

condensation)

Altitude:

40,000

Feet

max.

(12.192m

max.)

4-1-3.

Storage

and

Shipment

Temperature:

—40°F

+149°F

(—40°C

+65°C)

Humidity:

95%

(no

condensation)

Altitude:

40,000

Feet

max.

(12.192m

max.)

4-2.

Vibration

and

Shock

(Packaged

Condition)

4-2-1.

Vibration

Frequency:

(Sweep

cycle

810

seconds)

Length

time

for

testing:

Vertical

oo...

min.

Horizontal

oo...

min.

and

Rear

.......

min:

Right

and

Left

........

Acceleration

vibration:

Vertical

oe,

1.00G

Horizontal

...........

0.5G

4-2-2.

Shock

Corner

and

edge:

Height:

19.69

!n.(60

cm)

Front,

back

side

and

bottom:

Height;

23.62

in.(60

cm)

Shock

given

corner,

edge,

front,

back

side

and

bottom

times

each.

ELECTRIC

PERFORMANCE

5-1.

Power

Supply

Input

voltage:

180

264V

Input

frequency:

Input

current:

0.7A

max,

(at

230V

AC)

Power:

9Q5W

max.

(at

230V

AC)

Surge

current:

80A

max.

(at

230V

AC}

5-2.

Input

Signals

5-2-1,

5-2-2.

5-2-3.

Note:

Video

Signal

Polarity:

Positive

Signal

level:

Analog

0.7Vp-p/75

ohm

Horizontal

Synchronization

Signal

Polarity:

Positive/Negative

Signal

level:

TTL

level

separate

sync

Frequency

kHz

continuous.

Auto

size

and

center

31.5

kHz,

35.2

kHz

VGA/SVGA/8514A

standards.

Vertical

Synchronization

Signal

Polarity:

Positive/Negative

Signal

level:

TTL

level

separate

sync

Frequency:

continuous.

Non

Interlaced

modes.

Auto

size

and

center

for

VGA/

SVGA/8514A

standards.

The

monitor

detects

vertical

horizontal

sync

polarity

and?

automatically

select

its

polarity

and

frequency.

5-3.

Signal

Timing

See

figures

page

5-4.

Video

Output

Amplifier

response

The

video

amplifier

produces

drive

signal

the

cathodes

the

CRT

sufficient

amplitude

produce

spot

luminance

with

rise

and

fall

times

less

than

nsec.

from

10%

90%

pulsed

level,

Cathode

voltage

30Vp-p./Signal

source

ohm

impedance

and

oscilloscope

impedance

5pF,1M

ohm.

OPTICAL

CHARACTERISTICS

6-1.

Image

Test

Condition

Character:

All

'H”

character

Color:

White

Brightness

control:

Max.(without

background)

Contrast

control:

Max.

View

direction:

Parallel

the

CRT

axis

Ambient

Supply

voltage:

Room

temperature

220V

AC,

temperature:

Terrestrial

Horizontal

field...0.0

Gauss

Vertical

field.......

0.2

Gauss

magnetism:

Note:

All

measurements

shall

made

under

normal

conditions

after

initial

warm-up

time

minutes,

Note:

normal

condition

when

the

monitor

pro-

duces

the

desired

test

image.

The

conditions

the

items

are

normal

unless

(

otherwise

stated.

6-2.

Image

6-2-1.

Image

size

Horizontal:

9.65

0.39

in.

(245+

mm)

Vertical:

7.20

0.28

in,

(183

+ 7

mm)

6-2-2,

Image

position

6-2-3.

Mask

opening

Edge

line

the

image

—

0.236

in.

mm)

—

0.236

in.

mm)

Figure

Image

Position

Distortion

(A)

Pincushion

a,b

0.098

in.

(2.5

mm)

c,d

0.098

in.

(2.5

mm)

Input

signal

crosshatch

pattern.

Figure

Pincushion

Error

(B)

Rectangularness

Parallelogram

Distortion

Bendy

0.118

in.

mm)

Dosis

0.118

in.

mm)

Input

signal

crosshatch

pattern.

Figure

Parallelogram

Distortion

(C)

Linearity

Figure

Linearity

(MAX.)

—

(MIN,)

HORIZONTAL

LINEARITY

—-—-—-——--__

100

(%)

7.5%

(MAX,)

(MIN,)

(MAX,)

—

(MIN,)

VERTICAL

LINEARITY

—————_—__

100

(%)

7.5%

(MAX,)

(MIN.)

Maximum

and

minimum

value

should

not

adjacent

each

other.

(MAX.)

Maximum

distance

between

vertical

lines

from

Xm.

(MIN.)

Minimum

distance

between

vertical

lines

from

Xm,

(MAX,)

Maximum

distance

between

horizontal

lines

from

Yn.

(MIN.)

Minimum

distance

between

horizontal

lines

from

Yn.

(D)

Rotation

Horizontal

tine

the

image

shall

within

the

shaded

area.

Edge

"image

Horizontat

center

CRT

0.079

in.

mm)

Input

signal

crosshatch

pattern.

Figure

Rotation

(E)

Convergence

9.65

in.

(245

mm)

7.2

in.

(183

mm)

area

0.0118

in.

(0.3

mm)

areaB

0.0236

in.

(0.6

mm)

Figure

Mis-Convergence

Note:

Should

measured

under

the

following

conditions.

Terrestrial

magnetism

without

horizontal

field

Gauss).

With

vertical

field

0.2

Gauss.

room

temperature

Input

signal:

Crosshatch

mixed

colors.

6-3.

Image

Size

Variation

Notes

and

test

conditions

Image

size

variation

from

the

normal

image

size.

Within

0.118

in.(+

3m)

(Horizontal

and

Vertical)

Rotation

brightness

control

line

voltage

varied

220

240

volts

Within

0.157

int

mm)

(Horizontal

and

Vertical)

External

ambient

temperature

varied

Within

0.157

in.(+

4mm)

{Horizontal

and

Vertical)

Testing

condition

normal

condition.

OVERALL

PERFORMANCE

7-1,

Resolution

Horizontal

.....

...

1024

Pixels

Vertical

768

Pixels

7-2.

insulation

than

100

Between

line

and

chassis.

7-3.

Jitter

Less

than

dot

Invisible

distance

in.

(45.7

cm)

from

CRT

surface

CONNECTOR

8-1.

Signal

Connector

mini

D-SUB

type

connector

(interface

cable)

oc:

C1381

TIMING

CHART

Horizontal

Sync

Timing

Line

Time

——+|

Total

Sync

Pulse

Active

—>|

Blanking

Figure

Standard

Signal

Timing

(Preset

Timing)

There

shail

preset

timing

for

8514/A,

SVGA

and

VGA,

Vertical

Syne

Timing

Line

Time

poner’

Total

Sync

Pulse

Front

Active

Blanking

Non-Interlaced

Interlaced.

NOTE:

Scanning

mode

Figure

8514/A

SVGA

Pixel

period

22.0

27.8

Pixel

Rate

44.90

MHz

(Interlaced)

36.0

MHz

Horizontal

Frequency

35.52

kHz

35.16

kHz

Line

Time

Total

28.15

28.44

pus

Active

22.80

22.22

Blanking

5.35

6.23

Front

Porch

0.18

0.67

Sync

Pulse

3.92

2.00

Back

Porch

1.25

3.56

Vertical

Frequency

86.96

(Field

Frequency)

56.24

Frame

Time

Total

23.0

17.78

Active

10.81

17.07

Blanking

0.69

0.72

Front

Porch

0.014

0.03

Sync

Pulse

0.1126

0.06

Back

Porch

0.564

0.63

[

Active

Dots

1024

768

800

600

IBM

PS/2

(VGA)

Mode

Pixel

Period

35.30

39.70

Pixel

Rate

28.32

MHz

28.32

MHz

25.176

MHz

Horizontal

Frequency

31.47

kHz

31.47

kHz

31.47

kHz

Line

Time

Total

31.78

Active

25.42

Blanking

6.36

Front

Porch

0.64

pus

0.64

Sync

Pulse

3.81

Back

Porch

1.91

Vertical

Frequency

70.08

59.95

Frame

Time

Total

14.27.

14.27,

16.68

Active

11.12

12.71

15.25

Blanking

3.147

1.557

1.431

Front

Porch

1.176

0.381

0.318

Sync

Pulse

0.064

Back

Porch

1.907

1.112

1.049

Active

Dots

640

350

640

400

640

480

Signal

Timing

for

Apple

MAC

Apple

MAC

IL*

When

the

Apple

MACIL

used,

adjust

H-Size

and

V-Size

proper

size

(approximately

236mm

176mm)

Pixel

Period

33.1

H-SIZE

control

(R514)

and

V-SIZE

control

(R445).

Pixel

Rate

30.21

MHz

Horizontal

Frequency

35.00

kHz

;

Line

Time

Total

28.571

NOTE

C1381

not

auto

sized

and

centered

when

Active

21.164

used

with

Apple

MACIL.

Blanking

7.407

Front

Porch

2.116

NOTE

When

Apple

MACII

used,

optional

Sync

Pulse

2.116

15P-15P

mini

adaptor

(C81M2)

needed.

Back

Porch

3.175

Vertical

Frequency

66.67

Frame

Time

Total

15.000

Active

13.714

Blanking

1.286

Front

Porch

0.086

Sync

Pulse

0.086

Back

Porch

1.114

Active

Dots

640

480

H/V

composite

sync

DISASSEMBLY

INSTRUCTIONS

Pedestal

Removal

—

Turn

the

unit

rear

side

down

with

pedestal

towards

the

front.

(

Figure

13)

Remove

screws

(A)

from

the

swivel.

(Figure

13)

Slide

the

swivel

down.

(Figure

14)

Turn

the

swivel

135°

counter-clockwise.

(Figure

14)

Slide

the

swivel

up.

(Figure

15)

Turn

the

swivel

45°

counter-clockwise.

(Figure

15)

Slide

the

swivel

down

and

remove

it.

{Figure

16)

Remove

screws

from

the

pedestal.

(Figure

17)

Figure

Swivel

Figure

—10—

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