SONY KV-21FS140 Service Manual

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL

MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.

KV-21FS140 KV-21FS140

RM-YA005 LATIN NORTH SCC-S79A-A

RM-YA005 LATIN SOUTH SCC-S79B-A

BX-1S

CHASSIS

ORIGINAL MANUAL ISSUE DATE: 2/2006

REVISION DATE SUBJECT

2/2006 No revisions or updates are applicable at this time.

TRINITRON® COLOR TELEVISION

9-965-997-01

Self Diagnosis

Supported model

SERVICE MANUAL

MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.

KV-21FS140 KV-21FS140

RM-YA005 LATIN NORTH SCC-S79A-A

RM-YA005 LATIN SOUTH SCC-S79B-A

BX-1S

CHASSIS

9-965-997-01

KV-21FS140 RM-YA005

TRINITRON® COLOR TELEVISION

KV-21FS140

SPECIFICATIONS



!



  

+)*!

6)*/7/6!

.'

"#

'()*



,).'/! 

'3).'/!



#

$

%



!

!



&!

!

   



5!

 











(8 

9 

1)

1 Vp-p 75 ohms unbalanced, sync negative

2) Y: 1.0 Vp-p, 75 ohms, sync negative; PB: 0.7 Vp-p, 75 ohms;

PR Vp-p, 75 ohms.

3)

500 mVrms (100% modulation), Impedance: 47 kilohms

4)

This speciﬁ cation is the maximum wattage.



KV-21FS140



Television system

American TV standard, NTSC

Channel coverage

VHF: 2-13/UHF: 14-69/CATV: 1-125

Antenna

75-ohm external antenna terminal for VHF/UHF

Picture tube

FD Trinitron® tube

Visible screen size

20-inch picture measured diagonally

Actual screen size

21-inch measured diagonally

Supplied Accessories

Remote Commander RM-YA005 Two Size AA (R6) Batteries

Optional Accessories

Cables: VMC-810S/820S, VMC-720M, YC-YC-15V/30V, RK74A

As an ENERGY STAR® Partner, Sony Corporation has determined that this product meets the ENERGY STAR® guidelines for energy efficiency. ENERGY STAR® is a U.S. registered mark.

SRS and the ( )® symbol are trademarks of SRS Labs, Inc.

Manufactured under license from Dolby Laboratories Licensing Corporation. Dolby and the double-D symbol are trademarks of Dolby Laboratories.

Manufactured under license from BBE Sound, Inc. Licensed by BBE Sound, Inc. under USP 4638258, 5510752 and 5736897. BBE and BBE symbol are registered trademarks of BBE Sound, Inc.

WEGA, FD Trinitron and Steady Sound are registered trademarks of Sony Corporation.

Design and speciﬁ cations are subject to change without notice.

KV-21FS140

4

KV-21FS140

WARNINGS AND CAUTIONS

CAUTION

Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield, or carbon painted on the CRT, after removing the anode.

WARNING!!

An isolation transformer should be used during any service to avoid possible shock hazard, because of live chassis. The chassis of this receiver is directly connected to the AC power line.

! SAFETY-RELATED COMPONENT WARNING!!

Components identiﬁ ed by shading and ! mark on the schematic diagrams, exploded views, and in the parts list are critical for safe operation. Replace these components with Sony parts whose part numbers appear as shown in this manual or in supplements published by Sony. Circuit adjustments that are critical for safe operation are identiﬁ ed in this manual. Follow these procedures whenever critical components are replaced or improper operation is suspected.

KV-21FS140

5

SAFETY CHECK-OUT

KV-21FS140

After correcting the original service problem, perform the following safety checks before releasing the set to the customer:

1. Check the area of your repair for unsoldered or poorly soldered connections. Check the entire board surface for solder splashes and bridges.

2. Check the interboard wiring to ensure that no wires are “pinched” or

touching high-wattage resistors.

3. Check that all control knobs, shields, covers, ground straps, and

mounting hardware have been replaced. Be absolutely certain that you have replaced all the insulators.

4. Look for unauthorized replacement parts, particularly transistors,

that were installed during a previous repair. Point them out to the customer and recommend their replacement.

5. Look for parts which, though functioning, show obvious signs of

deterioration. Point them out to the customer and recommend their replacement.

6. Check the line cords for cracks and abrasion. Recommend the

replacement of any such line cord to the customer.

7. Check the B+ and HV to see if they are speciﬁ ed values. Make sure

your instruments are accurate; be suspicious of your HV meter if sets always have low HV.

8. Check the antenna terminals, metal trim, “metallized” knobs,

screws, and all other exposed metal parts for AC leakage. Check leakage as described below.

Leakage Test

The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes). Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers’ instructions to use these instructions.

2. A battery-operated AC milliampmeter. The Data Precision 245 digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low voltage scale. The Simpson’s 250 and Sanwa SH-63TRD are examples of passive VOMs that are suitable. Nearly all battery-operated digital multimeters that have a 2 VAC range are suitable (see Figure A).

How to Find a Good Earth Ground

A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw on most AC outlet boxes is also at earth ground. If the retaining screw is to be used as your earth ground, verify that it is at ground by measuring the resistance between it and a cold-water pipe with an ohmmeter. The reading should be zero ohms.

If a cold-water pipe is not accessible, connect a 60- to 100-watt troublelight (not a neon lamp) between the hot side of the receptacle and the retaining screw. Try both slots, if necessary, to locate the hot side on the line; the lamp should light at normal brilliance if the screw is at ground potential (see Figure B).

0.15 µF

Figure A. Using an AC voltmeter to check AC leakage. Figure B. Checking for earth ground.

KV-21FS140

To Exposed Metal

Parts on Set

1.5 K Ω

Earth Ground

AC

Voltmeter

(0.75 V)

Trouble Light

AC Outlet Box

Ohmmeter

Cold-water Pipe

6

KV-21FS140

SELF-DIAGNOSTIC FUNCTION

Self Diagnosis

Supported model

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY LED indicator will automatically begin to ﬂ ash. The number of times the LED ﬂ ashes translates to a probable source of the problem. A deﬁ nition of the STANDBY LED ﬂ ash 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 Indicators

When an error occurs, the STANDBY LED indicator will ﬂ ash a set number of times to indicate the possible cause of the problem. If there is more than one error, the indicator will identify the ﬁ rst of the problem areas. Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”.

Diagnostic Item

Description

Power does not turn on

+B overcurrent (OCP)*

V-Protect (OVP)

IK (AKB)

Power Supply NG (+5V) for Video Processor

No. of Times

STANDBY LED

Indicator Flashes

Does not light

2 times *

4 times

5 times

8 times

Self-Diagnositc

Display/

Diagnostic Result

2:0

or

2:1 - 255

4:0

or

4:1 - 255

5:0

or

5:1 - 255

8:0

or

8:1 - 255

Probable Cause Location

• Power cord is not plugged in.

• Fuse is burned out (F600). (A Board)

• H.OUT (Q805) is shorted. (A Board)

• IC751 is shorted. (C Board)

• +13V is not supplied. (A Board)

• IC804 is faulty. (A Board)

• Video OUT (IC1545) is faulty(A Board)

• IC001 is faulty. (A Board)

• Screen (G2) is improperly adjusted.**

• IC604 is faulty.

• IC602 is faulty.

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 deﬂ ection 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.

• No power supply to CRT Anode.

• No RASTER is generated.

*One ﬂ ash count is not used for self-diagnostic.

*If a +B overcurrent is detected, stoppage of the vertical deﬂ ection is detected simultaneously. The symptom that is diagnosed ﬁ rst by the mircrocontroller is displayed on the screen. **Refer to Screen (G2) Adjustments in Section 2-4. of this manual.

2. Display of STANDBY LED Flash Count

2 times

4 times

5 times

LED ON 0.3 sec.

LED OFF 0.3 sec.

LED OFF

3 sec.

Standby indicator

3. Stopping the STANDBY LED Indicator Flash

Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY LED Indicator from ﬂ ashing.

4. Self-Diagnostic Screen Display

For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be conﬁ rmed, it is possible to bring up past occurrences of failure on the screen for conﬁ rmation.

KV-21FS140

7

To Bring Up Screen Test

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

KV-21FS140

The following screen will be displayed indicating the error count:

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 when the diagnostic screen is displayed, as shown below:

DISPLAY

SELF DIAGNOSTIC

2 OCP : 0

3 OVP : N/A

4 VSTOP : 0

5 AKB : 1

8 SUP : 0

101 WDT : N/A

SERIAL:

MODEL:

Channel

5

Sound Volume -

Number “0” means that no fault was detected.

Number “1” means a fault was detected one time only.

POWER

Note that this differs from entering the Service Mode (Sound Volume + ).

Channel 8

Quitting the Self-Diagnostic Screen

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

Self-Diagnostic Circuit

FROM

C BOARD

IC751 PIN 5

0

A BOARD

IC001

Y/CHROMA JUNGLE

84

IK

A BOARD

IC804

V. OUT

F.B-PLS

3

A BOARD

IC001

SYSTEM

13

V. GUARD

SDAO

109

A BOARD

IC003

MEMORY

5

SDA

FROM

32

A BOARD

Q816

COLLECTOR

+B overcurrent (OCP)

Occurs when an overcurrent on the +B (135V) line is detected by pin 32 of IC001 (A Board). If the voltage of pin 32 of IC001 (A Board) is more than 4V when V.SYNC is more than seven verticals in a period, the unit will automatically turn off.

V-Protect

Occurs when an absence of the vertical deﬂ ection pulse is detected by pin 13 of IC001 (A Board). Power supply will shut down when waveform interval exceeds 2 seconds.

IK (AKB)

If the RGB levels* do not balance within 15 seconds after the power is turned on, this error will be detected by IC001 (A Board). TV will stay on, but there will be no picture.

Power Supply NG (+5V) for Video Processor

Occurs when IC001 internal HV protect detects an abnormal H-Pulse (frequency) due to improper power supply to IC001. The TV cuts off high voltage power of anode CRT. No picture will be detected. eg: faulty IC602 or IC604

EHTO

RED-LED

122

DISPLAY

KV-21FS140

8

1-1. REAR COVER REMOVAL

1

Remove 7 screws

+BVTP 4X16

2

Remove rear cover

KV-21FS140

SECTION 1: DISASSEMBLY

2

1-2. CHASSIS ASSEMBLY REMOVAL

1

Release power cord.

2

Press on catch tab to release A Board.

3

Gently pull the chassis forward.

1

KV-21FS140

C Board

2

A Board

3

Chassis Assembly

9

1-3. SERVICE POSITION

1

Press on catch tab to release A Board.

2

Gently pull the A Board forward to access the CN200 connector (to speakers)

3

Disconnect the CN200 from the A Board.

Gently continuing pulling the A Board and rotate into service position.

4

Reconnect CN200.

5

KV-21FS140

C Board

A Board

KV-21FS140

10

1-4. PICTURE TUBE REMOVAL

WARNING: BEFORE REMOVING THE ANODE CAP High voltage remains in the CRT even after the power is disconnected. To avoid electric shock, discharge CRT before attempting to remove the anode cap. Short between anode and CRT coated earth ground strap.

KV-21FS140

1

2

6

10

9

7

8

1. Discharge the anode of the CRT and remove the anode cap.

5

3

4

2. Unplug all interconnecting leads from the deﬂ ection yoke, neck assembly, degaussing coils and CRT grounding strap.

3. Remove the C Board from the CRT.

4. Remove the chassis assembly.

5. Loosen the neck assembly ﬁ xing screw and remove.

6. Loosen the deﬂ ection yoke ﬁ xing screw and remove.

7. Place the set with the CRT face down on a cushion and remove the degaussing coil holders.

8. Remove the degaussing coils.

9. Remove the CRT grounding strap and spring tension devices.

10. Unscrew the four CRT ﬁ xing screws [located on each CRT corner] and remove the CRT [Take care not to handle the CRT by the neck].

ANODE CAP REMOVAL PROCEDURE

WARNING: High voltage remains in the CRT even after the power is disconnected. To avoid electric shock, discharge CRT before attempting to remove

the anode cap. Short between anode and coated earth ground strap of CRT. NOTE: After removing the anode cap, short circuit the anode of the picture tube and the anode cap to either the metal chassis, CRT shield, or carbon painted on the CRT.

REMOVAL PROCEDURES

c

b

a

Anode Button

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

HOW TO HANDLE AN ANODE CAP

1. Do not use sharp objects which may cause damage to the surface of the anode cap.

2. To avoid damaging the anode cap, do not squeeze the rubber covering too hard. A material ﬁ tting called a shatter-hook terminal is built into the rubber.

3. Do not force turn the foot of the rubber cover. This may cause the shatterhook terminal to protrude and damage the rubber.

Use your thumb to pull the rubber cap ﬁ rmly in the direction indicated by arrow b .

When one side of the rubber cap separates from the anode button, the anode cap can be removed by turning the rubber cap and pulling it in the direction of arrow c .

KV-21FS140

11

SECTION 2: SET-UP ADJUSTMENTS

KV-21FS140

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.

Set the controls as follows unless otherwise noted: Picture control NORMAL

Brightness control NORMAL

2-1. BEAM LANDING

Before beginning adjustment procedure:

1. Feed in the white pattern signal.

2. In order to reduce the geomagnetism on the set’s picture tube, face it east or west.

Adjustment Procedure

1. Input a raster signal with the pattern generator.

2. Loosen the deﬂ ection yoke mounting screw, and set the purity control to the center as shown below:

Purity control

Perform the adjustments in order as follows:

1. Beam Landing

2. Convergence

3. Focus

4. Screen (G2)

5. White Balance

Note Test Equipment Required:

1. Color Bar Pattern Generator

2. Degausser

3. DC Power Supply

5. Oscilloscope

6. Landing Checker

7. XCV Adjuster

4. Digital Multimeter

6. Switch over the raster signal to red and blue and conﬁ rm the condition.

7. When the position of the deﬂ ection yoke is determined, tighten it with the deﬂ ection yoke mounting screw.

8. If landing at the corner is not right, adjust by using the disk magnets.

Purity control corrects this area.

a

b

d

c

Deflection yoke positioning corrects these areas.

Disc magnets or rotatable disc magnets correct these areas (a-d).

3. Turn the raster signal of the pattern generator to green.

4. Move the deﬂ ection yoke backward, and adjust with the purity control so that green is in the center and red and blue are even on both sides.

Blue

Red

Green

5. Move the deﬂ ection yoke forward, and adjust so that the entire screen becomes green.

b

c

a

d

KV-21FS140

12

KV-21FS140

2-2. CONVERGENCE

Before starting convergence adjustments:

1 Perform FOCUS, VLIN and VSIZE adjustments.

2. Set BRIGHTNESS control to minimum.

3. Set Picture mode to STANDARD.

4. Feed in dot pattern.

Vertical Static Convergence

1. Adjust the 4 pole magnet to converge red, green and blue dots in the center of the screen.

Center dot

R G B

R

G

B

4 pole magnet

Horizontal Static Convergence

If the blue dot does not converge with the red and green dots, use the 6 pole magnet to adjust as shown:

RG B R G B R GB

RB

G

RG

RB

6 Pole

Magnet

6 Pole Magnet

Purity

GB

RV750 H. STAT

C/CV Board

2. Tilt the 4 pole magnet and adjust static convergence to open or close the 4 pole magnet.

When the 4 pole magnet is moved in the direction of arrow A and

B

, the red, green, and blue dots move as shown below:

A

B

A

B

G

R

B

G

R

Moved RV750 (H.STAT)

DY pocket

4 Pole

Magnet

4 Pole Magnet

KV-21FS140

RGGRB

B

13

KV-21FS140

Convergence Rough Adjustment

Before performing this adjustment, perform Horizontal and Vertical Static Convergence Adjustment.

Input cross hatch pattern.

a) TLH

Adjust the horizontal convergence of red and blue dots by inserting

TLH Correction Plate to the DY pocket (left or right).

b) YCH

Adjust YCH to balance Y axis.

c) TLV

Adjust YCh to balance Y axis.

d) XCV

Adjust XCV to balance X-axis.

YCH

DY pocket

RB

YCH

TLV

B R

TLV

DY pocket

R B

TLH Plate

XCV

B

R

TLH

ON DY:

TLV

XCV

Screen Corner Convergence

Afﬁ x a Piece A (90), Convergence Correct/Permaloy Assy Correction to the misconverged areas.

ba

a-d : screen-corner misconvergence

cd

b1

a1

d1

a1~d1:Piece A (90), Convergence Correct

Permaloy Assy Correction

or

c1

2-3. FOCUS

FOCUS adjustment should be completed before White Balance

adjustment. (See 3-4. White Balance Adjustment)

1. Receive digital monoscope pattern.

2. Set Picture Mode to “DYNAMIC”.

3. Adjust focus VR to obtain a just focus at the center of the screen.

4. Change the receiving signal to white pattern and blue back.

5. Conﬁ rm magenta ring is not noticeable. In case magenta ring is obvious, then adjust FOCUS VR to balance magenta ring and FOCUS.

KV-21FS140

FOCUS

SCREEN

14

2-4. SCREEN (G2)

1. Before beginning adustment procedure:

-Set Picture and Brightness to “STANDARD”.

-Set TV to Video mode.

-Set WHBL 016 “RGBB” to 01

2. Connect R, G, B of the C/CV board cathode to oscilloscope.

3. Adjust Brightness to obtain the cathode value to the value shown below:

165 ± 2VDC

4. Adjust SCREEN VR on the FBT until the scanning line disappears.

5. Set WHBL 16 “RGBB” back to 00.

KV-21FS140

15

SECTION 3: CIRCUIT ADJUSTMENTS

Electrical Adjustments by Remote Commander

Use the Remote Commander (RM-YA005) to perform the circuit adjustments in this section.

Test Equipment Required: 1. Pattern generator 2. Frequency counter 3. Digital multimeter 4. Audio oscillator

3-1. REMOTE ADJUSTMENT BUTTONS AND INDICATORS

DISPLAY

(Service Mode)

KV-21FS140

MUTING

(Enter into memory)

1 Display next Item

2 Display next Category

4

Display previous Item

8

(Initialize)

VOLUME (+)

(Service Mode)

POWER

(Service Mode)

3

Increase Data value

6

Decrease Data value

5

Display previous Category

ENTER

(Enter into memory)

0

(Remove from memory)

KV-21FS140

RM-YA005

16

3-2. ACCESSING THE SERVICE MENU MODE

Use the remote commander to access the service meu mode and perform the following adjusments.

1. Standby mode (Power off).

2. Press the following buttons on the remote commander within a second of each other:

DISPLAY

Channel

5

Sound Volume +

The screen displays the ﬁ rst service data category item.

POWER

KV-21FS140

category in decimal item name in decimal NG service command frequency video input name

GEOM 000 HPOZ 055 x SERVICE 60 VIDEO 1

release ID version in binary for factory color system (decimal)

STR31 7.11U 0011 1111 FF FF - - - - - 00084

000 00 00 0000 3E 40 000 004000 0000FF

item no. service data NVM field channel no./

software service data reserved power on time

Status Byte Status Byte

Flash DCXO #1 SSD #2 SSD

1. On the Remote Commander press 2 to select the next category, or 5 to select the previous category.

2. Press 1 to select the next item, or 4 to select the previous item.

3. Press 3 to increase the data value, or 6 to decrease the data value.

4. Press

MUTING

then 0 to write into memory.

GREEN

GEOM 000 HPOS 039 SERVICE 50 VIDEO 1

write with [MUTING].

GREEN

GEOM 000 HPOS 039 WRITE 50 VIDEO 1

Write executed with -.

RED

GEOM 000 HPOS 039 WRITE 50 VIDEO 1

Resetting the User Menus

Use the following procedure to reset the User Menus to the factory default settings.

1. Access Service Adjustment Mode.

2. Press 8 then 0 on the Remote Commander.

“WRITE” displays when saving changes

“WRITE” becomes red when saving, then changes to “SERVICE”

KV-21FS140

17

KV-21FS140

3-3. CONFIRMING SERVICE ADJUSTMENT

CHANGES

1. After completing adjustments, pull out the plug from the AC outlet, then replace the plug in the AC outlet again.

2. Access Service Adjustment Mode.

3. Using the buttons on the Remote Commander, locate the adjusted items again to conﬁ rm they were adjusted.

3-4. WHITE BALANCE ADJUSTMENTS

NOTE: FOCUS adjustment should be completed before White Balance adjustment. (See 2-3. FOCUS)

1. Access Service Mode.

2. Input white raster signal using signal generator.

3. Set the following condition:

Picture “DYNAMIC”, PICT 006, note value of “WTS”

then change to 00.

4. Press 2 or 5 to select the WHBL category.

5. Press 1 or 4 to display the 03 “GDRV” and 04 “BDRV” items.

6. Press 3 or 6 to adjust for the best white balance.

7. At Cutoff, select WHBL 000 “BKOR” and 001 “BKOG” and adjust the data.

8. Perform adjustment at Highlight and Cutoff condition until it reaches its target.

9. Press

10. Set PICT 006 “WTS” back to its original data.

MUTING

then

ENTER

to save into the memory.

10. Set “PWL” and “BLBG” back to initial data.

(“PWL”: 01h and “BLBG”: 00h)

11. Press

Sub Color Adjustment

1. Set TV to Video mode.

2. Set Picture mode to “CUSTOM”.

3. Input PAL 100% Color Bar (CB) to TV set (OTHER MODEL).

4. INPUT NTSC 75% CB to TV set (NTSC MODEL).

5. Set PICT 006 “WTS” to 00h and Intelligent Picture to “OFF”.

6. Set the following condition:

PICTURE 50%, COLOR 50%, BRIGHTNESS 50%, HUE 50%,

7. Connect an oscilloscope to pin

8. Press

MUTING

SHARPNESS 50%

1

or 4 to select SADJ 004 “SCOL”, then adjust

B2=VB3=VB4

V

6

, then write in the data +5 step offset.

VB1

VB2 VB3 VB4 VB1 VB2 VB3 VB4

VB2 = VB3 = VB4 (for PAL) VB1 = VB4 (for NTSC)

then 0 to write into memory.

2

(B Output) of CN004.

(for PAL),

VB1 = VB4 (for NTSC)

(Difference is within 70mV)

by pressing

3

or

3-5. PICTURE QUALITY ADJUSTMENTS

P Max/Contrast Adjustment

1. Set TV to Video mode.

2. Set Picture mode to “CUSTOM”.

3. Input PAL 100% CB to TV set (OTHERS), NTSC 75% CB (NTSC model).

4. Set PICT 003 “PWL” to 00h WHBL 017 “BLBG” to 01h.

5. Set the following condition:

PICTURE 100%, COLOR 0%, BRIGHTNESS 50%

6. Connect an oscilloscope to pin

1

7. Press pressing 3 or 6 until the spec below:

or 4 to display SADJ 000 “PMAX”, then adjust VR by

1.46 ± 0.03 Vp-p = For 21" without VM models

1.65 ± 0.03 Vp-p = With VM models except NTSC models

1.23 ± 0.03 Vp-p = NTSC models VM models

1.10 ± 0.03 Vp-p = For 21" NTSC non VM models

4

(R Output) of CN004.

VR

Black

9. Press

10. Set “WTS” back to original data and Intelligent Picture to “ON”.

11. Copy no.9 data to PAL TV & DVD mode.

MUTING

then 0 to write into memory.

Sub Hue Adjustment

1. Set TV to Video mode.

2. Set Picture mode to “CUSTOM”.

3. Input NTSC 3.58 CB to TV set.

4. Set the following condition:

PICTURE 50%, COLOR 50%, BRIGHTNESS 50%, HUE 50%,

SHARPNESS 50%

5. Press 1 or 4 to select service mode and - 5 step offset from SADJ 004 “SCOL”.

6. Connect oscilloscope to pin

1

7. Press

8. Press

9. Press 1 or 4 to select SADJ 004 “SCOL” and +5 step offset, then

10. Select TV channel with 3.58 and repeat item (3) to (7) and +1 step

11. Press

or 4 to select SADJ 001 “SHUE”, then press 3 or 6 to

adjust the data.

MUTING

press

MUTING

data offset.(NTSC model)

MUTING

then 0 to write into memory.

then 0 to write into memory .

then 0 to write into memory.

2

(B output) of CN004.

8. Select Wide Mode to “ON” in TV and Video mode and write “PMAX” data - 8 steps (for models with V-Compression features only).

9. Press

MUTING

then 0 to write into memory.

KV-21FS140

18

KV-21FS140

12. For single system model with NTSC 4.43, select TV channel with NTSC 4.43 and repeat items (3) to (8)

VB3

VB1

VB2

VB4

80mV

The highest level of VB1, VB2, VB3, VB4

must be aligned at the same time.

The ideal difference between V

B2 and VB3 is within ± 80mV

13. Once adjustment is completed in Video mode, carry out adjustment in DVD mode. Set TV to DVD mode. Input NTSC 3.58 CB to DVD set and perform steps 4 to 9 and 11.

Sub Bright Adjustment

1. Set TV to RF mode.

2. Input PAL monoscope to RF mode.

3. Set Brightness 50% and Picture to “MINIMUM”.

4. Press 1 (or 4) to select WHBL 010 “SBRT”.

5. Press 3 to increase the data value, or 6 to decrease the data value so that the cut-off level is 10 IRE, slightly glimmer: 20 IRE.

6. Press

MUTING

then 0 to write into memory.

PAL 50HZ NORMAL MODE

1. Input PAL signal 50Hz in the Service Mode.

2. Set Wide Mode to “OFF”.

3. Perform the below adjustments using the “General Setting” sequence.

Item No. Function Illustration

GEOM 013 Vertical Shift (VPOS)

GEOM 011 Vertical Amplitude (VSIZ)

Note: Adjust VSIZ to

12.4

±

(SPCB)

11. 3

(PAL Monoscope)

±

11. 5

±

(NTSC Monoscope)

GEOM 000 Horizontal Shift (HPOS)

GEOM 009 EW Trapezoid (EWTZ)

GEOM 005 EW Width (EW) (HSIZ)

GEOM 002 Horizontal Bow (HBOW)

Note: Adjust HSIZ to

±

16.4

(SPCB)

±

14.6

(PAL Monoscope)

±

(NTSC Monoscope)

15.3

Geometry Adjustment

Geometry adjustment must be done for both color systems PAL and NTSC.

General Setting

1. Input Monoscope or Special Color Bar (SPCB) signal using a pattern generator.

2. Access Service Mode.

3. Select the category item that needs adjusting by pressing 1 or

4. Press 3 to increase the data value, or 6 to decrease the data value.

5. Press

MUTING

then 0 to write into memory.

NOTE: Geometry Adjustment must be performed for 4 different modes:

PAL 50Hz NORMAL MODE,

PAL 50Hz WIDE MODE,

NTSC 60Hz NORMAL MODE,

NTSC 60Hz WIDE MODE.

4

GEOM 006 EW Parabola/Width (EWPW) (PW)

GEOM 007 EW Upper Corner (UCOP) Parabola

GEOM 008 EW Lower Corner (LCOP) Parabola

GEOM 001 Horizontal (HPAR) Parallelogram

GEOM 012 S-Correction(SC) (SCOR)

GEOM 003 Vertical Linearity (VLIN)

GEOM 004 Vertical Scroll (VSCR)

4. After completing the adjustments for PAL 50Hz NORMAL MODE, set Wide mode to “ON”, and copy all PAL 50Hz NORMAL MODE adjusted data to PAL 50Hz WIDE MODE except VSCR.

5. Complete the adjustment for NTSC 60Hz NORMAL MODE.

6. Set Wide mode to “OFF”.

7. Complete the adjustment items listed in the above table using the “General Setting” sequence.

8. After completing the adjustments set Wide mode to “ON” and copy all NTSC 60Hz NORMAL MODE adjusted data to NTSC 60Hz WIDE MODE except VSCR.

9. After completing all the adjustments, reconﬁ rm VSIZ and VPOS.

KV-21FS140

19

dAel

J

VyT

t

i

la

no

i

t

cn

u.F

t

ine

Ign

a

nRo

i

t

cn

u

e

F

t

o

N

&e

lb

aeTmaN

eci

v

enDo

mmo)C

d

el

i

ateD(e

u

laVl

a

it

inI

yrog

eta.

C

oe

NmacNec

DeD 05)3:4

0

(6)

3:

40(5w)

3:

4

0

(

6w

)

3:

4(

MO

E

0

G0

S0O

P1

H

33

0

6)

0

S

H(tf

i

h

S

lat

no

ziro

H >)Z/F/N/

Z

W(

*)

0

6/

0

5(

n

eerc

S9:

6

1<

>06

w/

05

w/

06/

05ne

er

c

S3:

4< ros

s

ecorP-VT

11

313133

10R

0A

P1

H33

06

m

0argole

l

lar

a

P

l

a

t

no

z

iro

H

>)Z/

F/N/Z

W(*)

06/05(ne

er

cS9:

61

<>

06

w

/

05

w/

0

6/

05ne

er

c

S3:

4<

113

13133

20W

0

O

B

1H

3

06 w0o

B

l

atn

o

ziro

H

>)Z/F/N/Z

W(*)0

6

/05(neer

cS9:

61

<

>

06

w/

0

5

w/0

6/

0

5neerc

S3:4

<

113

13133

30N

0IL

1V3306 y

0

t

ir

aen

i

L

lac

i

treV

>)Z

/F

/

N

/ZW(*)

0

6/

0

5(

n

e

er

cS

9:61<>06

w/0

5

w

/06

/05n

eerc

S

3

:4

<

113

13133

40R

0C

S1

V3306 l

0l

or

c

S

l

a

c

i

tre

V >)

Z/

F/N/

ZW(*)06/05

(

neer

cS9:

6

1

<

>0

6w

/0

5w

/06

/05n

eerc

S3:4

<

11

3

13

133

5

0

Z

0

I

S1

H33

06 )0W

E(ht

d

iWW

E

>)Z/F/N/

ZW(*)

0

6/05(neercS9:6

1<>

06w/

05w/

0

6/

05ne

er

c

S3:

4

<

11313

133

60

W

0PW

1E3

3

0

6

)0W

P(htdiW/alob

a

ra

PW

E

>)Z/F/

N

/ZW(*)

06

/

05(neercS9:

6

1<>

06w/05w/

0

6/

0

5nee

r

c

S3:

4

<

11313

133

70P0OC7U

1

306 a

0

l

obar

a

P

r

enr

o

C

re

pp

UW

E >)

Z/

F/N/Z

W

(

*)

06

/0

5(n

eercS9:61<

>

06w/0

5w/

0

6/

0

5n

e

er

c

S3:4

<

77

1

71

711

80P

0

OC

7L1306 a0l

o

bar

a

P

r

enr

o

Cre

w

oLW

E >)Z/F/N/ZW

(

*)

0

6/

05(n

e

erc

S

9

:

61<>

06w/

0

5w/06/0

5

neer

c

S3:4

<

77171

711

90Z0TW1

E

3306 m

0

u

i

z

ep

arTW

E >)Z/F/N/

Z

W(

*)

0

6/

0

5(

n

eercS9:6

1<>

0

6w/05

w

/06

/

05n

eercS3:

4

<

1131313

3

0

1P0LS1

V3

30

6

)

0S

V(epol

S

lac

itr

e

V

>)

Z/F/N/ZW(*)0

6/

0

5(ne

er

cS9:61

<

>06w/

0

5w/

06

/

05neercS3:

4<

113

1

3

133

11Z0

I

S5

V1306 e0

d

ut

ilpm

A

la

c

itr

e

V >)Z

/

F/N/ZW(*)06/

0

5(

n

e

er

cS

9

:

61<>

0

6w/

05w/06/

0

5ne

er

cS

3

:

4

<

551

5

1

511

21R

0

O

C4

S1306 )

0

CS(

n

o

itcerr

o

C-

S

>)Z/

F/N/

Z

W(*)06

/

05(n

e

er

cS9:6

1

<>06w/

0

5w/0

6

/0

5ne

er

cS3:4<

44141

411

31S

0OP1

V3306 )

0

H

S

V(

t

f

ih

S

l

a

citre

V >)Z

/

F/N/ZW(*)06/

0

5(

n

e

er

cS

9:61<>

0

6w/0

5w/

0

6/0

5n

eercS

3

:4<

11

3

13133

41M

0OZ1

V330

6

)

0

Z

V(

m

ooZ

lac

it

r

e

V

>)Z

/F/N/ZW(*)06

/

05(n

eercS9:6

1

<

>

0

6w/05w/06

/

05n

eercS

3

:4<

51L0B

0H

0

100 e0

doMgn

i

k

n

a

l

B

G

R >)Z

/

F/N/ZW

(

*)06/

0

5(

n

e

er

c

S9:61<>

0

6w/0

5w/

0

6/05

n

eercS

3

:4<

1

10

10100

6

1F

0B7W0501 )0

FB

W(g

ni

k

n

a

l

BediWfogni

miT

>)Z

/F

/

N

/Z

W(*)06/05(n

e

er

cS9:61

<

>0

6w/

05w

/0

6/

05neerc

S

3

:

4

<

77

0

707

00

71R

0B7W05

01 )0RB

W(

g

nikn

a

lBediWfogn

i

miT >)

Z

/F/N/

ZW(*)

0

6/05(neercS

9

:6

1<>0

6w

/05w/06/

0

5ne

er

cS3:

4<

04

1

01411

81L0

B0

S01

0

0g

0nik

na

l

Be

c

i

vr

e

S

>)

Z/F

/N/ZW(*)06/

0

5(ne

er

cS9:

61<>06w/0

5w/

06

/

05n

eercS3:4< 0

0

91Y

0P

O

0C

0

10

0a0er

a

MV

NzH

06/

0

5

l

aotatadOE

Ge

ht

y

p

o

C >)

Z/F/N/ZW(*)0

6/

05

(

n

e

er

cS9:61<>0

6w/05

w

/06/05n

e

er

cS3:4< 0

0

O

N

ET

)a .atad ledo

n

i eht

I

.

/"(

oN

b.a

t

)

me

r

I

)

c

)

S

t

d

na etoN

)e

Ib t

eht

n

N

)f

T

S

lai

tin

v

m

)"

ae

sn

a

me

kr

e

ahs

i

ded

rad

tad

d

f

ro

esac

v

C

f

o

baT

hsals eh

ra

la

" d

"

*

s

met

il

a

ff

re

iD eht

N61.6 re

.

iated( eu

tad

si

a

*

dna

,"

"

*

e

ra

.

on

atad

eht

no dets

A ht ataD tne

vrassecen si

ed a

lper

eci

,nmu

loc )del

o

f nommoc

r

r e

saelp

fe

ujd

ra eso

dna itluM

re

tI

tnemts

me

T

ts eht e

sujda ,tnemeca

mt

t re

tfa atad eht

N

ST

2

rof 5

egap

el

ba

r

adna

ad d

r

y

ne

m

ledom C

tad eht

f

er era v at

nit

rwe

i

ecnere

v

eula v

g

eht

/"( k

)"

fe

s

r

re

ot

fereht ,seula

ro

ht n

tirw s

net

o

atad

i

m e

eulav

m C

S

TN

ref

t

e

i

po

rc

r

co

f

eb

yam

id

rosse

. romem

s rof

y

tne

ferehT

ro

mo

hcae rof

m

ad

eht ,e

.smeti e

met

I t

ne

mtsuj

KV-21FS140

f

dna

ledo

ro

hcae

seulav at

.

edom

sledom eht fo

itcepser derots era

yle.y

eht ni

KV-21FS140

20

KV-21FS140

JV

y

Tt

i

lan

o

itcnu

.

F

tineI

gna

n

R

oitcnu

e

F

toN&elb

a

eTmaNe

cive

nDo

mmo

C

)

de

l

iateD(eulaVla

it

i

nI

y

r

ogeta.C

o

e

N

ma

c

N

e

c

D

e

D

VU

l

Y

ap05 )

VT(

lap05

)oedi

V

(

maceS05

)VT(

maceS05

)oediV(

VT0

0

6

)oed

iV

(

VUY0

V

5U

Y

0

B6G

R0

B

5

GR0e6domciP

0

ed

omciP

1

edomciP

2

VoTe

d

iV

ediWVT

)3:4(

e

d

iWoediV

)3

:

4(

J

DA0S0X0

AM

3

P

6306

m0u

m

ixaMe

rutciP >edi

W/lamroN</)ediW/la

mroN(*)oediV/VT

r(o

sseco

rP-VT

7

37

3

733

1

0E

0

U

H

7

S

0

5

0

1e0u

H-buS oediV/VT

7

70

0

20

P

0

HS

5S

1

3

0

6

s

0

senprahS-buS V

UY/oediV/VT

24

0

2

4

30

O

0

HS

0

S

0

7

0

)

0

c

iP

tnegi

l

le

t

nI(t

e

sf

f

Ossen

pr

ah

S-buS e

no6n0

40

L

0

OC

1S

3

0

6r0o

l

o

C-buS /

)o

ed

iv(maces05/)vt

(mace

s

05/)oediv(lap05/)

vt

(lap

05

BGR06/BGR

05/V

UY

06/VUY0

5/oediv06

/VT06

0

1

003

10131

30

3

1

00

31

0

3

50

O

0

OC

0S

030

0

)

0

ci

Pt

neg

illetnI(tesffO

roloC

-b

uS

eno

2

n

0

60

C

0

I

1

P

3

7

02 ;

1

)dilavni(0

0

1>;

)di

lav(001

~0:AG[lort

no

C

e

rutc

iP

]

)

dilavni(6t

ib

e

rongi;)dila

v

(3

6~0:srehtO

)ata

D

t

e

s

e

R

resU=lanos

reP:AG(

le

doMerutciP

000108

8

7

0

L

0

O

1C

3

7

0

2;

1

)dilavn

i(001>;)dilav(

001

~0:A

G[lortnoCr

o

l

o

C

])dilavni(6tiberongi;)d

ilav(36~0:sreht

O

)ataDtes

eRres

U

=

lanosreP:AG

(ledoMe

ru

tciP

6

09

055

80

T0

R

1

B

3702

;

1)dilavni

(001

>;

)dilav(001~0:AG[lo

rtnoCssenthgi

rB

]

)dilavni(6

t

ib

e

ro

ng

i

;

)di

lav(36~0:srehtO

)ataD

tese

Rre

sU=lan

osreP:AG(

ledoMerutc

iP

0

5

0

5

90

E0

U

1H

3

7

02 ;

1

)dilavn

i

(

001>;)dila

v

(00

1

~0:A

G[lortnoCeuH

])d

ilavn

i(6tibe

rongi;)dila

v(36~0:srehtO

)

le

do

mS

Uht

iw)0-5(hE1#TNI

TotdneS*(

)ataDteseRresU=lanos

reP:AG(ledo

Me

r

ut

ciP

00505

5

0

1

P

0

H

1

S

3

7

0

2

;

1

)dilavni(001>;)dilav(001~0:AG[lo

rtnoCssenprahS

])dila

vni(6tiberongi;

)d

ilav(36~

0:

s

rehtO

)at

a

DteseRre

s

U

=

l

anos

reP

:AG(ledoMe

rutciP

0

60

5

JVyTtil

a

noi

t

cnu

.

Ftin

eI

g

nanRoi

t

cn

ue

F

toN&el

b

a

eT

maNe

civ

e

n

D

omm

oC )d

e

l

i

a

teD(eu

l

aVlaitinI

yr

og

e

ta

.C

oeNmacNe

c

DeD

pmeTloC

)r

ehtoLOOC

(

pme

Tl

oC

)rehtoMRA

W

(

pmeTlo

C

L

AR

TUEN(

)reh

to

pme

TloC

)VUYLOOC(

pmeTloC

)VU

Y

MR

AW

(

pm

eTl

oC

LARTUEN(

)VU

Y

VU0

Yedomci1

P

e

d

omc

i2

P

e

d

omc

iV

PoTediV

LBH0W0

R0O

K

1

B

3

0

6)

01

0=BFO(Bte

s

f

fO,)0

0

=BFO(Rte

s

ffOle

ve

L

k

c

a

l

B )

s

re

htO/BG

R

/

VU(*)la

m

roN

/WOL/HGIH(pme

tl

o

rcos

se

corP-V

T

1

3131313133

10

G

0O

K

1B

3

30

6G0t

e

s

f

fOl

ev

e

L

k

calB

)

sr

eh

tO/

BGR

/VU

(

*

)

l

a

mro

N

/WOL

/HGIH(pmetlo

c

113131313133

20V0R

D7R330

6

R

0

t

n

i

oPetihW

)

s

r

eh

tO

/B

G

R

/VU

(

*

)

l

a

m

r

oN

/WOL

/

HGIH(p

me

t

lor

c

osse

c

o

r

P

-

VT

77373

7373733

3

0

V

0

RD7G330

6G0tni

o

P

e

tihW

)s

rehtO

/BGR

/

V

U

(

*

)

l

amr

oN

/

WO

L

/H

G

IH(

p

m

e

tl

oc

773737373733

4

0V0RD

7

B

33

0

6B0tnioP

e

t

i

h

W )

sr

e

h

tO

/BGR/

V

U

(*)lam

r

oN

/

WO

L

/HG

IH

(

pmetloc

773

73737373

3

5

0G0P0

L

0100 t

0e

s

er

P

n

i

aG

BGR eno1

n0

60

R

0G1P370

2)1RG

P

(Rn

i

aGtese

r

P

en

o0

n4

70

G0G1

P

370

2)1GG

P

(G

n

iaGt

e

serP

en

o0n4

80

B0G1P37

0

2)1BGP(Bn

i

aG

t

e

serP en

o

0n4

90

F

0

ON0G05

0

1t0esf

fO

n

i

aGte

serP eno

p

noolCC

5C1

01

T

0

R

B

1

S

330

6

s

0se

n

th

g

irB-buS VUY/BGR/sr

e

h

tO

13

1133

11O0

RB0S

03

0

0)0ciPtnegil

l

e

tn

I

(te

s

f

fO

ssenthgirB-buS en

o

2

n0

21L

0

G

0

E

0

1

0

0m0etsy

S

CC

Cni

p

ooLn

i

aGelb

anE en

o

0n0

3

1L0G0

S

0300 m

0ets

y

S

CC

C

n

it

nerruChgiHfono

itc

e

l

e

S en

o

0

n

0

4

1

B0

K

0A

010

0

n

0

oitazil

i

ba

t

St

nerr

uC

kcalB

en

o

0n0

51

S0

B

0C010

0g0

n

i

ti

miL

t

n

e

rruCmaeBfo

e

c

neu

q

eSlort

n

oC en

o

0n0

61

B

0BG

0R03

00 g

0niknalB

BGR

e

no

0n0

71G

0

BL0B01

0

0t0u

p

t

uO

n

eerG&

e

u

l

Bfognik

nal

B

eno0

n

0

81B0F0

O

01

0

0e0ul

B

tesffOl

ev

eLk

calB

e

no1

n

0

91R0B

S0N0501 t0esffOssenth

g

ir

Bdra

d

na

t

SnoN

eno

0n

0

2P

0B

0

W03

00

)

0

woL:3,2,lamroN:1,h

g

iH

:

0(

g

n

it

t

eSpme

T

r

o

l

oC

e

do

M

er

u

t

c

i

P

0

1

010

0

KV-21FS140

21

SONY KV-21FS140 Service Manual

TABLE OF CONTENTS

SPECIFICATIONS

WARNINGS AND CAUTIONS

SAFETY CHECK-OUT

SELF-DIAGNOSTIC FUNCTION

1-1. REAR COVER REMOVAL

SECTION 1: DISASSEMBLY

1-2. CHASSIS ASSEMBLY REMOVAL

1-3. SERVICE POSITION

1-4. PICTURE TUBE REMOVAL

ANODE CAP REMOVAL PROCEDURE

SECTION 2: SET-UP ADJUSTMENTS

2-1. BEAM LANDING

2-2. CONVERGENCE

2-3. FOCUS

2-4. SCREEN (G2)

SECTION 3: CIRCUIT ADJUSTMENTS

3-1. REMOTE ADJUSTMENT BUTTONS AND INDICATORS

3-2. ACCESSING THE SERVICE MENU MODE

3-4. WHITE BALANCE ADJUSTMENTS

3-5. PICTURE QUALITY ADJUSTMENTS

PAL 50HZ NORMAL MODE