Sony KV-2199M70 Service Manual

Self Diagnosis

Supported model

SERVICE MANUAL

MODEL COMMANDER DEST. CHASSIS NO.

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

MODEL COMMANDER DEST. CHASSIS NO.

BG-3S

CHASSIS

TRINITRON

COLOR TV

KV-2199M70

RM-952

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

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. EXPLODED VIEW

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

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

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

– 3 –

KV -2199M70

RM-952

SELF DIAGNOSTIC FUNCTION

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. DIAGNOSTIC TEST INDICA TORS

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.

– 4 –

2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT

2 times

5 times

KV-2199M70

RM-952

Lamp ON 0.3 sec. Lamp OFF 0.3 sec.

Lamp OFF 3 sec.

STANDBY/SLEEP lamp

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. STOPPING THE 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.

– 5 –

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

SELF DIAGNOSTIC

002 : 000 003 : 000 004 : 000 005 : 001

101 : 000

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

Numeral "1" means a fault has been detected.

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.

– 6 –

6. SELF-DIAGNOSTIC CIRCUIT

KV-2199M70

RM-952

FROM

CRT

FROM

[+B] Q604 C3

[H] D526

[V] Q509/507

IC301

Y/CHROMA JUNGLE

IK-IN

MP/

18 51

PROTECT

SDA

4635

IC001

SYSTEM

IO-8DAT

O-LED

IO-SDAT

MEMORY

B-DAT

54521

IC003

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

down when detect it.

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

shut down the power supply.

[Verticaldeflection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failure] 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.)

– 7 –

Advanced Operations

Blocking the channels (CHILD LOCK)

You can prevent a child from watching certain programs by using the buttons on the remote control.

Select the TV program you want to lock.

Press SELECT until

“CHILD LOCK” appears on the screen.

Press + 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

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

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

Press

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 To PARIS

To OSAKA

To ROM A

To SYDNEY

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

JUMP

SOUND

MODE

FAVORITE

PROGR

– 15 –

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 colorcoded 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 n Teletext and TV n TV.

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 …

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 n Enlarge lower half n Normal size.

1 Enter the Teletext page number that you want to

refer to, then press

2 When the page number is displayed, press

show the text.

Additional Information

ONE-PUSH AUTOMATIC PROGRAMING

Additional Information

Self-diagnosis function

Your TV is equipped with a self-diagnosis function. If there is a problem with your TV, the u indicator flashes red. The number of times the u indicator flashes indicates the possible causes.

Check that the u indicator flashes red a number of times between 3-second intervals.

Count the number of times the u indicator flashes.

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

Inform your nearest Sony service center about the number of times the u indicator flashes. Be sure to note the model name and serial number located on the rear of your TV.

Front of TV

u indicator

– 16 –

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.

– 17 –

KV-2199M70

RM-952

KV -2199M70

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 ROT

ATION” 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 u indicator 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)

2 PROGR +/– (program) buttons (11) 3

+/– (volume) buttons (11)

…

(TV/video) button (12)

5 AUTO PROGR (program) button (5) 6 SELECT button (10) 7

(earphone) jack

ONE-PUSH AUTOMATIC PROGRAMING

ONE-PUSH AUTOMATIC PROGRAMMING

RM-952

– 18 –

2-5. REPLACEMENT OF PARTS

Multi button

Two screws (+BVTP 3 × 12)

Light guide

One screw (+BVTP 3 × 12)

Multi button

Cut

Light guide

Cut

A board

Terminal board bracket

1 Demagnetization coil

2 Tension spring

Picture tube

For replacement of the Multi Button and Light Guide, cut the welded portions from them, exchange with the new parts, and fix them with screws (+BVTP) respectively.

2-5-1. REPLACEMENT OF MULTI BUTTON

– 21 –

2-6. TERMINAL BRACKET REMOVAL

2-7. DEGAUSS COIL REMOVAL

2-5-2. REPLACEMENT OF LIGHT GUIDE

KV-2199M70

RM-952

KV-2199M70

2 A board

4 C3 board

7 Neck assy

5 Deflection yoke

Cushion

6 Four screws (Tapping screws)

1 Anode cap

F board

Anode button

2-8. PICTURE TUBE REMOV AL

– 22 –

•REMOVAL OF ANODE-CAP

NOTE : After removing the anode, short circuit the anode of the picture tube and

the anode cap to the metal chassis, CRT shield or carbon paint on the CRT.

•REMOVING PROCEDURES

1 Turn up one side of the rubber cap in the direction indicated by the arrow a.

2 Using a thumb pull up the rubber cap firmly in the direction indicated by the arrow b.

RM-952

3 When one side of the rubber cap is separated from the anode button, the anode-cap

can be removed by turning up the rubber cap and pulling it up in the direction of the arrow c.

• HOW TO HANDLE AN ANODE-CAP

1 Do not damage the surface of anode-caps with sharp shaped objects. 2 Do not press the rubber too hard so as not to damage the inside of anode-cap.

A metal fitting called the shatter-hook terminal is built into the rubber.

3 Do not turn the foot of rubber over too hard.

The shatter-hook terminal will stick out or damage the rubber.

SECTION 3

SET-UP ADJUSTMENTS

KV-2199M70

RM-952

• The following adjustments should be made when a complete

realignment is required or a new picture tube is installed.

• These adjustments should be performed with rated power

supply voltage unless otherwise noted.

Controls and switches should be set as follows unless otherwise noted:

PICTURE control........................................................... normal

BRIGHTNESS control................................................... normal

................................................................................................................................................................................................................................

Preparation :

• In order to reduce the influence of geomagnetism on the set's

picture tube, face it east or west.

• Switch on the set's power and degauss with the degausser.

3-1. BEAM LANDING

1. Input a white signal with the pattern generator. Contrast Brightness

2. Position neck assy as shown in Fig3-2.

3. Set the pattern generator raster signal to a green raster.

4. Move the deflection yoke to the rear and adjust with the purity control so that the green is at the center and the blue and the red take up equally sized areas on each side. (See Figures 3-1 through 3-3.)

5. Move the deflection yoke forward and adjust so that the entire screen is green. (See Figure 3-1.)

6. Switch the raster signal to blue, then to red and verify the condition.

7. When the position of the deflection yoke has been decided, fasten the deflection yoke with the screws and DY spacers.

8. If the beam does not land correctly in all the corners, use a magnet to adjust it. (See Figure 3-4.)

}

normal

Perform the adjustments in the following order :

1. Beam Landing

2. Convergence

3. Focus

4. White Balance Note : Test Equipment Required.

1. Color-bar/Pattern Generator

2. Degausser

3. Oscilloscope

Neck assy

Note: Neck Assy is exactly behind DY (no gap between Neck Assy and DY)

Fig. 3-2

Blue

Red

Green

Fig. 3-3

Purity control corrects this area.

Disk magnets or rotatable

disk magnets correct these areas (a-d).

Fig. 3-1

Deflection yoke positioning

corrects these areas.

Fig. 3-4

– 23 –

KV -2199M70

RM-952

3-2. CONVERGENCE

Preparation :

• Before starting this adjustment, adjust the focus, horizontal size

and vertical size.

• Minimize the brightness setting.

• Provide dot pattern.

(1) Horizontal and Vertical Static Convergence

1 V. STAT

b b

B G R

Center dot

R G B

H. STAT VR

R G B

V.STAT Magnet

RV 702

C3 board

(Moving vertically), adjust the V.ST AT magnet so that the red, green and blue dots are on top of each other at the center of the screen.

2 H. STAT VR

4 BMC (Hexapole) Magnet.

If the red, green and blue dots are not balanced or aligned, then use the BMC magnet to adjust in the manner described below.

RG B R G B R GB

V.STAT

BMCPurity

BMC (Hexapole) Purity

– 24 –

+ 31 hidden pages

Sony KV-2199M70 Service Manual

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

TABLE OF CONTENTS

SELF DIAGNOSTIC FUNCTION

SET-UP ADJUSTMENTS