Sony KV-2199M70 Manual de usuario

MODEL COMMANDER DEST. CHASSIS NO.

KV-2199M70 RM-952 ME SCC-U30W-A

MODEL COMMANDER DEST. CHASSIS NO.

CHASSIS

TRINITRON

COLOR TV

SERVICE MANUAL BG-3S

Self Diagnosis

Supported model

– 3 –

KV-2199M70

RM-952

TABLE OF CONTENTS

Section Title Page

SELF DIAGNOSIS FUNCTION................................ 4

1. GENERAL........................................................................ 8

2. DISASSEMBLY

2-1. Rear Cover Removal................................................ 20

2-2. Chassis Assy Removal ............................................. 20

2-3. F Bracket Removal .................................................. 20

2-4. Service Position ....................................................... 20

2-5. Replacement of Parts ............................................... 21

2-5-1. Replacement of Control Button ....................... 21

2-5-2. Replacement of Light Guide ............................ 21

2-6. Terminal Bracket Removal ...................................... 21

2-7. Degauss Coil Removal............................................. 21

2-8. Picture Tube Removal.............................................. 22

3. SET-UP ADJUSTMENTS

3-1. Beam Landing.......................................................... 23

3-2. Convergence............................................................. 24

3-3. Focus Adjustment .................................................... 26

3-4. G2 (Screen) and White Balance Adjustments......... 26

4. CIRCUIT ADJUSTMENT

4-1. Adjustments with Commander ................................ 27

4-2. Adjustment Method ................................................. 28

4-3. Picture Quality Adjustments.................................... 33

4-4. A Board Adjustment After IC003 (Memory)

Replacement............................................................. 33

4-5. Picture Distortion Adjustment ................................. 34

Section Title Page

5. DIAGRAMS

5-1. Block Diagram ......................................................... 37

5-2. Frame Schematic Diagram ...................................... 40

5-3 Circuit Boards Location .......................................... 42

5-4. Schematic Diagrams and Printed Wiring Boards ... 43

(1) Schematic Diagram of A (1/2) Board...................... 45

(2) Schematic Diagram of A (2/2) Board...................... 48

(3) Schematic Diagrams of C3 and VM1 Boards ......... 54

(4) Schematic Diagram of F Board .................................... 59

5-5. Semiconductors........................................................ 61

6. EXPLODEDVIEW

6-1. Chassis ..................................................................... 63

7. ELECTRICAL PARTS LIST....................................... 65

– 4 –

KV-2199M70

RM-952

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will automatically

begin to flash.

The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER

lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom cannot

be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past

problems and how often these problems occur.

1. DIAGNOSTICTEST INDICATORS

When an errors occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the

problem. If there is more than one error, the lamp will identify the first of the problem areas.

Result for all of the following diagnostic items are displayed on screen. No error has occured if the screen displays a “0”.

Diagnostic

Item

Description

• Power does not

turn on

• +B overcurrent

(OCP) or

overvoltage

(OVP)

• Vertical deflection

stopped

• Horizontal

deflection

overdrive

• White balance

failure (no

PICTURE)

• Micro reset

No. of times

STANDBY/TIMER

lamp flashes

Does not light

2 times

5 times

—

Self-diagnostic

display/Diagnostic

result

—

002:000 or

002:001~255

003:001~255

004:001~255

at the same time

005:000 or

005:001~225

101:00 or

101:001~225

Probable

Cause

Location

• Power cord is not plugged

in.

• Fuse is burned out F4601

(F)

• H.OUT Q511 is shorted.(A

board)

• IC701 is shorted. (C board)

• -13V is not supplied. (A

board)

• IC 503 faulty (A board)

• G2 is improperly adjusted.

(Note 2)

• CRT problem.

• Video OUT IC701 is faulty.

(C board)

• IC301 is faulty. (A board)

• No connection A board to

C3 board.

• Discharge CRT (C3 Board)

• Static discharge

• External noise

Detected

Symptoms

• Power does not come on.

• No power is supplied to the

TV.

• AC power supply is faulty.

• Power does not come on.

• Load on power line is

shorted.

• Has entered standby state

after horizontal raster.

• Vertical deflection pulse is

stopped.

• Power line is shorted or

power supply is stopped.

• No raster is generated.

• CRT cathode current

detection reference pulse

output is small.

• Power is shut down shortly,

after this return back to

normal.

• Detect Micro latch up.

Note 1: If a + B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.

The symptom that is diagnosed first by the microcontroller is displayed on the screen.

Note 2: Refer to screen (G2) Adjustment in section 3-4 of this manual.

SELF DIAGNOSTIC FUNCTION

– 5 –

KV-2199M70

RM-952

2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT

Diagnostic Item Flash Count*

+B overcurrent/overvoltage 2 times

Vertical deflection stopped

White balance failure 5 times

* One flash count is not used for self-diagnostic.

3. STOPPINGTHE STANDBY/TIMER FLASH

Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER lamp

from flashing.

Lamp ON 0.3 sec. Lamp OFF 3 sec.

Lamp OFF 0.3 sec.

2 times

5 times

STANDBY/SLEEP lamp

–6 –

KV-2199M70

RM-952

4. SELF-DIAGNOSTIC SCREEN DISPLAY

For errors with symptoms such as “power sometimes shuts off”or “screen sometimes goes out”that cannot be confirmed, it

is possible to bring up past occurances of failure for confirmation on the screen:

[To Bring Up Screen Test]

In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:

[Screendisplay] /channel [5] /Sound volume [-] /Power ON

Note that this differs from entering the service mode (mode volume [+]).

Self-Diagnosis screen display

002 : 000

003 : 000

004 : 000

005 : 001

Numeral "0" means that no fault has been detected.

Numeral "1" means a fault has been detected.

101 : 000

SELF DIAGNOSTIC

5. HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLAY

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen

during repairs. When you have completed the repairs, clear the result display to “0”.

Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after

completion of the repairs.

[Clearing the result display]

To clear the result display to “0”, press buttons on the remote commander sequentially as shown below when the diagnostic

screen is being displayed.

Channel [8] /0

[Quitting Self-diagnostic screen]

To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.

–7 –

KV-2199M70

RM-952

6. SELF-DIAGNOSTIC CIRCUIT

[+BovercurrentªOCPº] Occurs when an overcurrent on the +B(135) line is detected by Q604. If Q604 go to ON

and the voltage to pin 18 of IC301 should go down when V.SYNC is more than seven

verticals in a period, the unit will automatically turn off.

[Horizontalde lectionoverdrive] Occurs when an overdrive on H drive line is detected by D526. Power supply will be shut

down when detect it.

[Verticalde lectionstopped] Occurs when an absence of the vertical deflection pulse is detected by Q509 and IC001

shut down the power supply.

[Verticalde lectionovercurrent] Occurs when an overcurrent on V drive line is detected by Q507. Power supply will be

shut down when detect this by IC001.

[Whitebalance ailure] If the RGB levels* do not balance or become low level within 5 seconds, this error will be

detected by IC301.TV will stay on, but there will be no picture.

* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)

IC301

Y/CHROMA JUNGLE

FROM

CRT

FROM

[+B] Q604 C3

[H] D526

[V] Q509/507

IC001

SYSTEM IC003

MEMORY

B-DAT

IO-SDAT

IK-IN

MP/

PROTECT

IO-8DAT

O-LED

SDA

54521

18 51

4635

–15 –

KV-2199M70

RM-952

Advanced Operations

Blocking the

channels

(CHILD LOCK)

You can prevent a child from watching

certain programs by using the buttons

on the remote control.

1Select the TV program you want to lock.

2Press SELECT until “CHILD

LOCK”appears on the

screen.

3Press + or –to select

“ON”.

The symbol appears on

the screen.

To unlock the channel,

press + or –to select

“OFF”. The symbol

disappears from the screen.

Note

•If you preset a locked channel, that particular channel will be unlocked

automatically.

CHILD LOCK: ON

CHILD LOCK: OFF

SELECT

123

789

÷0

JUMP

SOUND

MODE

FAVORITE

PROGR

SELECT

+ or –

Advanced Operations

Viewing Teletext

(KV-2199XT only)

TV stations broadcast an information

service called Teletext via some TV

channels. Teletext allows you to receive

various information, such as shares

market or news.

Displaying Teletext

1Select a TV channel that carries the Teletext broadcast you want to watch.

2Press to display the

text.

A Teletext page (normally

the index page) is

displayed. If there is no

Teletext broadcast, “100”is

displayed at the top left

corner of the screen.

To turn off Teletext

Press ;.

;

A/B

FASTEXT

…

P166 SECTEXT 166 FR1 MAR 03:59:09

From Singapore

ToPARIS

ToOSAKA

To RO MA

ToSYDNEY

Day Dep/Arr Flight Alrcraft

1.6 220/0588 SQ28 747

2 2130/1225 PA115 L15

3 2115/1330 SQ26 747

2.7 2130/0745 SQ24

747

4 2300/0915 AZ487 747

2.5 1000/1715 SQ6 747

4.6 0930/2015 CX522 L10

1 2210/0610 SQ21A 747

2 2100/0835 SQ21A 747

123

789

÷0

JUMP

SOUND

MODE

FAVORITE

PROGR

–16 –

KV-2199M70

RM-952

Advanced Operations

Additional Teletext tasks

display a Teletext page on the TV

picture

check the contents of a Teletext service

select a Teletext page

hold a Teletext page

(stop the page from scrolling)

reveal concealed information

(e.g., an answer to a quiz)

enlarge the Teletext display

wait for a Teletext page while watching

a TV program

* You can also select a Teletext page of any page number that appears in the

colored column at the bottom of the screen using the corresponding color-

coded button on the remote.

Using FASTEXT

This feature allows you to quickly access a Teletext page that uses

FASTEXT. When a FASTEXT program is broadcasted, the colored

menus appear at the bottom of the screen. The colors of the menus

correspond to the red, green, yellow, and blue color-coded buttons

on the remote.

To access a FASTEXT menu

Press the color-coded button on the remote corresponding to the

menu you want. The menu page appears on the screen after several

seconds.

Do this

Press .

Each time you press , the screen changes as

follows: Teletext nTeletext and TV nTV.

Press

An overview of the Teletext contents and page

numbers appear on the screen.

Press the number buttons to enter the three-digit

page number of the desired Teletext page.* If you

make a mistake, reenter the correct page number. To

access the next or previous page, press PROGR +/–.

Press …

to display the symbol “j”at the top

left corner of the screen. To resume normal Teletext

operation, press …

or .

Press

To conceal the information, press the button again.

Press A/B .

Each time you press A/B , the Teletext display

changes as follows: Enlarge upper half nEnlarge

lower half nNormal size.

1 Enter the Teletext page number that you want to

refer to, then press

2 When the page number is displayed, press to

show the text.

Additional Information

ONE-PUSHAUTOMATIC PROGRAMING

Additional Information

Self-diagnosis function

Your TV is equipped with a self-diagnosis function. If there is a

problem with your TV, the uindicator flashes red. The number of

times the uindicator flashes indicates the possible causes.

1Check that the uindicator flashes red a number of times between 3-second

intervals.

2Count the number of times the uindicator flashes.

3Press U(main power) to turn off your TV.

4Inform your nearest Sony service center about the number of times the

uindicator flashes.

Be sure to note the model name and serial number located on the rear of

your TV.

Front of TV

uindicator

–17 –

KV-2199M70

RM-952

Additional Information

Troubleshooting

If you find any problem while viewing your TV, please check the following guide. If

any problem persists, contact your Sony dealer .

Possible causeSymptom Solutions

continued

Additional Information

Snowy picture

Noisy sound

Distorted picture

Noisy sound

Good picture

Noisy sound

(KV-2199M70 only)

No picture

No sound

•

Check the antenna cable and connection

on the TV, VCR and on the wall. (page 4)

•Press SELECT until “MANUAL

PROGRAM”appears on the screen then

preset the channel again. (page 9)

•Check the antenna type (VHF/UHF).

Contact a Sony dealer for advice.

•Adjust the antenna direction. Contact a

Sony dealer for advice.

•Try using a booster.

•Turn off or disconnect the booster if it is

in use.

•If the sound of some channels are noisy,

select the channel, then select the

appropriate TV system (“TV SYS”).

(page 9)

•Check the power cord, antenna and the

VCR connections.

•Press u(power).

•Press U(main power) on the TV to turn

off the TV for about five seconds, then

turn it on again.

•Connection is loose or the

cable is damaged.

•Channel presetting is

inappropriate or

incomplete.

•The antenna type is

inappropriate.

•The antenna direction is

inappropriate.

•Signal transmission is low.

•Broadcast signals are too

strong.

•The TV system setting is

inappropriate.

•The power cord, antenna

or VCR is not connected.

•The TV is not turned on.

Additional Information

Troubleshooting (continued)

Possible causeSymptom Solutions

•Press ¸+ to increase the volume level.

•Press ¤to cancel the muting.

•Do not use a hair dryer or other

equipment near the TV.

•Adjust the antenna direction for

minimum interference. Contact a Sony

dealer for advice.

•Use a highly directional antenna.

•Use the fine tuning (FINE) function.

(page 10)

•Adjust the antenna direction. Contact a

Sony dealer for advice.

•Turn off or disconnect the booster if it is

in use.

•Press SELECT until “COLOR”appears

on the screen, then press + or –to adjust

the color level. (page 15)

•

Press SELECT until “COL SYS ”appears

on the screen, then check the color

system setting (usually set this to

“AUTO”). (page 10)

•Adjust the antenna direction. Contact a

Sony dealer for advice.

•Keep external speakers or other

electrical equipment away from the TV.

Do not move the TV while the TV is

turned on. Press U(main power) on

the TV to turn off the TV for about five

minutes, then turn it on again.

Good picture

No sound

Dotted lines or stripes

Double images or

“ghosts”

No color

Abnormal color patches

•

The volume level is too low.

•The sound is muted.

•There is local interference

from cars, neon signs, hair

dryers, power generators,

etc.

•Broadcast signals are

reflected by nearby

mountains or buildings.

•The antenna direction is

inappropriate.

•Use of a booster is

inappropriate.

•The color level setting is

too low.

•The color system setting is

inappropriate.

•The antenna direction is

inappropriate.

•The magnetic disturbance

from external speakers or

other equipment, or the

direction of the earth’s

magnetic field may affect

the TV.

–18 –

KV-2199M70

RM-952

Additional Information

—

•

Check the antenna cable and connection

on the TV, VCR, and at the wall. (page 4)

•

Adjust the antenna direction. Contact a

Sony dealer for advice.

•

Try using a booster

•

Use the fine tuning (FINE) function.

(page 10)

•Keep external speakers or other

electrical equipment away from the TV.

•Press SELECT until “PIC ROTATION”

appears on the screen, then press + or –

to align the picture to the TV screen.

(page 12) (KV-2199XT only)

•

Use the fine tuning (FINE) function.

(page 10)

•

Contact your nearest Sony service

center. (page 20)

––

—

Possible causeSymptom Solutions

•The channel carries no

Teletext broadcast.

•Connection is loose or the

cable is damaged.

•The antenna direction is

inappropriate.

•Signal transmission is too

low.

•The magnetic disturbance

from external speakers or

other equipment, or the

direction of the earth’s

magnetic field may affect

the TV.

•There is interference from

external sources, e.g.,

heavy machineries, nearby

broadcast station.

•Your TV may need service.

•Changes in room

temperature sometimes

make the TV cabinet

expand or contract,

making a noise. This does

not indicate a malfunction.

•The TV’s demagnetizing

function is working. This

does not indicate a

malfunction.

“100”appears on the top

of the screen and there is

no Teletex display.

(KV-2199XT only)

Teletext display is

incomplete (snowy picture

or double images).

(KV-2199XT only)

Picture slant

(KV-2199XT only)

Lines moving across the

TV screen

The uindicator on your

TV flashes red a number

of times between

3-second intervals.

TV cabinet creaks.

A “boom”sound is heard

when the TV is turned on.

Additional Information

Identifying parts and controls

Refer to the pages indicated in parentheses ( ) for details.

Front panel

(main power) button (11)

2PROGR +/–(program) buttons (11)

+/–(volume) buttons (11)

…

(TV/video) button (12)

5AUTO PROGR (program) button (5)

6SELECT button (10)

(earphone) jack

ONE-PUSHAUTOMATIC PROGRAMING

ONE-PUSH AUTOMATIC PROGRAMMING

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