Sony KV-38FV16K, KV-38FV26T Service manual

SERVICE MANUAL

MODEL COMMANDER DEST CHASSIS NO.

AA-2U CHASSIS

KV-38FV16K KV -38FV26T

RM-Y149A KOREA SCC-S51A-A RM-Y170 TAIWAN SCC-S52A-A

KV-38FV26T

RM-Y170

TRINITRON® COLOR TV

KV-38FV16K/38FV26T

15W x 2

Power requirements 120V, 60Hz 120-220V, 50/60Hz Number of inputs/outputs

Speaker output(W) Power Consumption(W)

Dimensions(W/H/D)

Mass

Television system

American TV standard, NTSC

Channel coverage

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

SPECIFICATIONS

KV-38FV26T KV-38FV16K

Video

S Video

Y,PB, PR

Audio Audio Out Monitor Out S-Link (Out) Control-S (IN/OUT)

In use(Max) In standby

(mm) (inches)

(kg) (lbs)

1 Vp-p 75 ohms unbalanced, sync negative

Y: 1 Vp-p 75 ohms unbalanced, sync negative C: 0.286 Vp-p (Burst signal), 75 ohms

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

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

More than 408 mVrms at the maximum volume setting (variable) More than 408 mVrms (fix); Impedance (output): 2 kilohms

200W

975 x 757 x 633

3/8

x 291

107 kg

236 lbs.

3 2 1 4 1 1 3 1

3/16

x 24

15/16

Picture tube

Trinitron® tube

Visible screen size

36-inch picture measured diagonally

Actual screen size

38-inch measured diagonally

Antenna

75 ohm external terminal for VHF/UHF

Supplied Accessories

RM-Y149A (KV -38FV16K ONL Y) RM-Y170 (KV-38FV26T ONL Y) Batteries size AA (R6) (2) Wireless Stereo Headphones MDR-1F0230 (KV-38FV26T ONLY) Battery for Headphones size AA (R6) (1) (KV -38FV26T ONLY)

Optional Assessories

AV Cable: VMC-810/820/830 HG Audio Cable: RKC-515HG S-LINK Cable: RK-G69HG Component Video Cable: VMC-10/30 HG TV Stand: SU-36FD3

Design and specifications are subject to change without notice.

( • ) SRS (SOUND RETRIEVAL SYSTEM)

The ( • ) SRS (SOUND RETRIEVAL SYSTEM) is manufactured by Sony Corporation under license from SRS Labs, Inc. It is covered by U.S. Patent No. 4,748,669. Other U.S. and foreign patents pending.

The word ‘SRS’ and the SRS symbol ( • ) are registered trademarks of SRS Labs, Inc.

BBE and BBE symbol are trademarks of BBE Sound, Inc. and are licensed by BBE Sound, Inc. under U.S. Patent No. 4,638,258 and 4,482,866.

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KV-38FV16K/38FV26T

Section Title Page

Warnings and Cautions...............................................................................................................................................................4

Self-Diagnostic Function ............................................................................................................................................................. 4

Safety Check-Out Instructions ...................................................................................................................................................7

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

2. DISASSEMBL Y

2-1. Rear Cover Removal .....................................................................................................................................................13

2-2. Chassis Assembly Removal .........................................................................................................................................13

2-3. Service Position ............................................................................................................................................................13

2-4. Picture Tube Removal ................................................................................................................................................... 14

3. SET -UP ADJUSTMENTS

3-1. Beam Landing ............................................................................................................................................................... 15

3-2. Convergence ................................................................................................................................................................16

3-3. Focus ............................................................................................................................................................................18

3-4. Screen (G2) ..................................................................................................................................................................18

3-5. White Balance Adjustments .......................................................................................................................................... 18

4. SAFETY RELA TED ADJUSTMENTS

4-1. R530, R531 Confirmation Method (HV Hold-Down Confirmation and Readjustments)..........................................19

4-2. B+ Voltage Confirmation and Adjustment ..................................................................................................................... 19

5. CIRCUIT ADJUSTMENTS

5-1. Setting the Service Adjustment Mode .......................................................................................................................... 20

5-2. Memory Write Confirmation Method .............................................................................................................................. 20

5-3. Adjust Buttons and Indicators ......................................................................................................................................20

5-4. Adjustment Items........................................................................................................................................................... 21

5-5. Feature ID Map .............................................................................................................................................................. 26

5-6. Program Palette Settings ............................................................................................................................................... 27

5-7. A Board Adjustments ....................................................................................................................................................27

6. DIAGRAMS

6-1. Block Diagram ............................................................................................................................................................... 31

6-2. Circuit Board Location .................................................................................................................................................. 39

6-3. Printed Wiring Boards and Schematic Diagrams .........................................................................................................39

• A Board .................................................................................................................................................................... 40

• UX Board ..................................................................................................................................................................47

• UX PIP Board ............................................................................................................................................................51

• AK Board ..................................................................................................................................................................55

• DH Board ..................................................................................................................................................................56

• C Board .................................................................................................................................................................... 59

• HZ Board ..................................................................................................................................................................60

• G Board ....................................................................................................................................................................61

• HA Board ..................................................................................................................................................................63

• HB Board ..................................................................................................................................................................63

• GA Board..................................................................................................................................................................65

• HX Board ..................................................................................................................................................................68

• WA Board ................................................................................................................................................................. 69

• T Board.....................................................................................................................................................................71

6-4. Semiconductors ............................................................................................................................................................73

7. EXPLODED VIEW

7-1. Chassis .........................................................................................................................................................................74

7-2. Picture Tube .................................................................................................................................................................. 75

8. ELECTRICAL P ARTS LIST ...................................................................................................................................................76

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KV-38FV16K/38FV26T

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 IDENTIFIED BY SHADING AND MARK ON THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS, AND IN THE PAR TS LIST ARE CRITICAL FOR SAFE OPERA TION. 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 IDENTIFIED IN THIS MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITICAL COMPONENTS ARE REPLACED OR IMPROPER OPERA TION IS SUSPECTED.

A TTENTION!!

APRES AVOIR DECONNECTE LE CAP DE L'ANODE, COURT-CIRCUITER L'ANODE DU TUBE CATHODIQUE ET CELUI DE L'ANODE DU CAP AU CHASSIS METALLIQUE DE L'APPAREIL, OU AU COUCHE DE CARBONE PEINTE SUR LE TUBE CATHODIQUE OU AU BLINDAGE DU TUBE CATHODIQUE.

ATTENTION!!

AFIN D'EVITER TOUT RESQUE D'ELECTROCUTION PROVENANT D'UN CHÁSSIS SOUS TENSION, UN TRANSFORMATEUR D'ISOLEMENT DOIT ETRE UTILISÉ LORS DE TOUT DÉPANNAGE. LE CHÁSSIS DE CE RÉCEPTEUR EST DIRECTEMENT RACCORDÉ À L'ALIMENTATION SECTEUR.

A TTENTION AUX COMPOSANTS RELA TIFS A LA SECURITE!!

LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE MARQUE SUR LES SCHEMAS DE PRINCIPE, LES VUES EXPLOSEES ET LES LISTES DE PIECES SONT D'UNEIMPORTANCE CRITIQUE POUR LA SECURITE DU FONCTIONNEMENT . NE LES REMPLACER QUE P AR DES COMPOSANTS SONY DONT LE NUMERO DE PIECE EST INDIQUE DANS LE PRESENT MANUEL OU DANS DES SUPPLEMENTS PUBLIES P AR SONY . LES REGLAGES DE CIRCUIT DONT L'IMPORT ANCE EST CRITIQUE POUR LA SECURITE DU FONCTIONNEMENT SONT IDENTIFIES DANS LE PRESENT MANUEL. SUIVRE CES PROCEDURES LORS DE CHAQUE REMPLACEMENT DE COMPOSANTS CRITIQUES, OU LORSQU'UN MAUVAIS FONTIONNEMENT SUSPECTE.

SELF-DIAGNOSTIC FUNCTION

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER LED will automatically begin to flash. The number of times the LED flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER LED 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.

Diagnostic Test Indicators

When an error occurs, the STANDBY/TIMER LED will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the LED will identify the first 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 Does not light

+B overcurrent (OCP)* N/A

+B overvoltage (OVP)* N/A N/A • IC643 or T603 is open. (G Board) • Power does not come on.

V-STOP* 4 times 4:0 or 4:1 • +13V is not supplied. (A Board)

IK 5 times 5:0 or 5:1 • Video OUT (IC561) is faulty. (A Board)

No. of Times

STANDBY/TIMER

LED Flashes

Self-diagnostic Display/

Diagnostic Result

N/A

Probable Cause

Location

• Power cord is not plugged in.

• Fuse is burned out. (F601) (G Board/GA Board)

• H.OUT (Q502) is shorted. (A Board)

• IC1701 is shorted. (C Board)

• IC561 is faulty. (A Board)

• IC355 is faulty. (A Board)

• Screen (G2) is improperly adjusted.**

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.

* 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.

** Refer to Screen (G2) Adjustments in Section 3-4 of this manual.

— 4 —

Display of Standby/Timer LED Flash Count

4 times 5 times

KV-38FV16K/38FV26T

LED ON 0.3 sec. LED OFF 0.3 sec.

LED OFF

STANDBY/TIMER LED

3 sec.

Diagnostic Item Flash Count*

V-STOP 4 times IK 5 times

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

Stopping the Standby/Timer LED 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.

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 occurrences of failure on the screen for confirmation.

To Bring Up Screen Test

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

Display Channel

Sound volume

Power ON

Self-Diagnostic Screen Display

SELF DIAGNOSIS

2: +B OCP N/A 3: +B OVP N/A 4: VSTOP 0 5: AKB 1

101: WDT 24

Note that this differs from entering the service mode (sound volume

Numeral “0” means that no fault was detected.

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

— 5 —

KV-38FV16K/38FV26T

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:

ENTERChannel

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

IC1701 PIN1

A BOARD

FROM

IC501 PIN 1

A BOARD

IC355

Y/CHROMA JUNGLE

IK IN

V-STOP

HP/PROTECT

SDA

A BOARD

IC561

V. OUT

REF

A BOARD

IC001

SYSTEM

IO-BDATN

O-TIMELED

IO-SDATN

DISPLAY

A BOARD

IC1002

MEMORY

BDA

+B overcurrent (OCP) Occurs when an overcurrent on the +B (135V) line is detected by pin 18 of IC355 (A Board).

If the voltage of pin 18 of IC355 (A Board) is less than 1V when V.SYNC is more than seven verticals in a period, the unit will automatically turn off.

+B overvoltage (OVP) Occurs when the feedback circuit from +B opens IC643 or T603 or any other associated

feedback components.

V-STOP Occurs when an absence of the vertical deflection pulse is detected by pin 15 of IC355 (A

Board). Power supply will shut down when waveform interval exceeds 2 seconds.

IK (AKB) If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will

be detected by IC355 (A Board). TV will stay on, but there will be no picture.

*(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K).

NOTE: Watch Dog Timer Indicates how many times the Watch Dog Timer functions have been activiated. Whenever

micro is reset by the Watch Dog Timer, this number is incremented. Maximum number is 255.

— 6 —

SAFETY CHECK-OUT

Trouble Light

AC Outlet Box

Ohmmeter

Cold-water Pipe

KV-38FV16K/38FV26T

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 specified 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 milliammeter. 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 batteryoperated 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 coverplate 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 trouble- light (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).

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

— 7 —

KV-38FV16K/38FV26T

The instructions mentioned here are partial abstracts from the Operating Instruction Manual.

The page numbers shown reflect those of the Operating Instruction Manual.

SECTION 1 GENERAL

— 8 —

KV-38FV16K/38FV26T

— 9 —

KV-38FV16K/38FV26T

— 10 —

KV-38FV16K/38FV26T

— 11 —

KV-38FV16K/38FV26T

— 12 —

2-1. REAR COVER REMOV AL

KV-38FV16K/38FV26T

SECTION 2

DISASSEMBLY

4 Screws (+BVTP 4x16)

3 Screws (+BVTP 4x16)

5 Screws (+BVTP 4x16)

4 Screws (+BVTP 4x16)

2 Screws (+BVTP 3x12)

2-2. CHASSIS ASSEMBLY REMOVAL

Chassis Assembly

Claw

2-3. SERVICE POSITION

C Board

WA Board

UX Board

A Board

G Board (KV-38FV26T ONLY) GA Board (KV-38FV16K ONLY)

— 13 —

KV-38FV16K/38FV26T

2-4. 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 CR T before attempting to remove the anode cap. Short between anode and CRT coated

earth ground strap.

Coated

Earth

Ground

Strap

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

2. Unplug all interconnecting leads from the deflection 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 fixing screw and remove.

6. Loosen the deflection yoke fixing 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 fixing screws [located on each CRT corner] and remove the CRT [Take care not to handle the CRT by the neck].

ANODE CAP REMOVAL

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

NOTE: After removing the anode, short circuit the anode of the picture tube and the anode cap to either the metal chassis, CRT shield,

attempting to remove the anode cap. Short between anode and coated earth ground strap of CRT.

or carbon painted on the CRT.

REMOVAL PROCEDURES

Anode Button

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

Use your thumb to pull the rubber

cap firmly in the direction indicated by arrow

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

HOW TO HANDLE AN ANODE CAP

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

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

Do not force turn the foot of the rubber cover. This may cause the shatter-hook terminal to protrude and damage the rubber.

— 14 —

SECTION 3

SET-UP ADJUSTMENTS

KV-38FV16K/38FV26T

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.

The controls and switch should be set as follows unless otherwise noted:

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

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

3-1. BEAM LANDING

Preparation:

• Input a white pattern signal.

• Face the picture tube in an East or West direction to reduce

the influence of geomagnetism. NOTE: Do not use the hand degausser because it magnetizes

the CRT .

1. Input white pattern from pattern generator.

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

Perform the adjustments in order as follows:

1. Beam Landing

2. Convergence

3. Focus 4 . Screen (G2)/White Balance

Note: T est Equipment Required:

1 . Color Bar Pattern Generator

2. Degausser 3 . DC Power Supply

4. Digital Multimeter

5. Oscilloscope

6. CRT Analyzer

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

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

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

3. Input green pattern from pattern generator.

4. Move the deflection 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 deflection yoke forward, and adjust so that the entire screen becomes green.

— 15 —

Disk magnets or rotatable disk magnets correct

these areas (a-d)

Purity control

corrects this area

Deflection yoke positioning

corrects these areas

KV-38FV16K/38FV26T

3-2. CONVERGENCE

Preparation:

• Perform FOCUS, V. LIN and V. SIZE adjustments.

• Set BRIGHTNESS control to minimum.

• Input dot pattern.

R G B

Center dot

RV1761 V.STAT

V.STAT magnet

Vertical and Horizontal Static Convergence

1. Adjust V. STAT magnet to converge red, green and blue dots in the center of the screen (Vertical movement).

Tilt the V. STAT magnet and adjust static convergence to open or close the V. STAT magnet.

Operation of BMC (Hexapole) Magnet

The respective dot positions resulting from moving each magnet interact, so perform adjustment while tracking.

1 Use the V.STAT tabs to adjust the red, green, and blue dots

so they line up at the center of the screen (move the dots in a horizontal direction).

RG B

RGB RGB

RGB

Y Separation Axis Correction Magnet Adjustment

1. Input cross-hatch pattern, adjust PICTURE to minimum and BRIGHTNESS to normal.

2. Adjust the deflection yoke upright so it touches the CRT.

3. Adjust so that the Y separation axis correction magnet on the neck assembly is symmetrical from top to bottom (open state).

2. When the V. STAT magnet is moved in the direction of arrow a and b, red, green, and blue dots move as shown below:

RG B

BG R

V.S TAT

BMC MAGNET

PURITY

4. Return the deflection yoke to its original position.

— 16 —

KV-38FV16K/38FV26T

Dynamic Convergence Adjustment

Before starting, perform Vertical and Horizontal Static Conver-

gence Adjustment.

1. Slightly loosen deflection yoke screw .

2. Remove deflection yoke spacers.

3. Move the deflection yoke for best convergence as shown below:

BGR

RGB

BGR

R G

B G R

RGB

B G R

BGR RGB

R G B

TLH Plate Adjustment

• Input crosshatch pattern.

• Adjust PICTURE QUALITY to standard, PICTURE and BRIGHTNESS to 50%, and OTHER to standard.

• Adjust the Horizontal Convergence of red and blue dots by tilting the TLH plate on the deflection yoke.

Y Magnet

WA Board

RV1761

V. STAT

XCV

4. T ighten the deflection yoke screw.

5. Install the deflection yoke spacers.

Screen-corner Convergence

1. Affix a permalloy assembly corresponding to the misconverged areas:

a-d: screen-corner

misconvergence cd

1. Adjust XCV core to balance X axis.

2. Adjust YCH VR to balance Y axis.

3. Adjust vertical red and blue convergence with V.TILT (TLV VR.)

Perform adjustments while tracking items 1 and 2.

4. Adjust Y MAGNET to correct V.BOW Geometery Distortion.

5. Adjust H-TRP to correct H.Trapezoid Geometry Distortion.

After adjusting items 4 and 5, confirm overall geometry again.

— 17 —

KV-38FV16K/38FV26T

pedestal

GND

170Vdc

170 + 2.0 Vdc

3-3. FOCUS

1. Input monoscope signal.

2. Set user controls to normal.

3. Set video mode to STANDARD.

4. Set the PICTURE to maximum.

5. Adjust at 325 Mark for best center/corner focus balance.

6. Receive an entire white signal. Make sure Magenta Ring is at an acceptable level.

3-5. WHITE BALANCE ADJUSTMENTS

Focus

Screen (G2)

325 MARK

35 MARK CENTER

CIRCLE

325

3-4. SCREEN (G2)

1. Input dot pattern from the pattern generator.

2. Set the user controls to NORMAL.

3. Attach the G2-Jig to the C Board.

5. Adjust RCUT, GCUT, BCUT, and SBRT in service mode with an oscilloscope so that voltages on the red, green, and blue cathodes are 170 ± 2.0Vdc.

5. Observe the screen and adjust SCREEN (G2) VR to obtain the faintly visible background of dot signal.

6. Push the TEST + JUMP (+ Channel) to cut off the signal. The screen should be bright or dark. Brightness of raster must be increased when adjusting.

7. Adjust screen VR until the screen is slightly cut off, or scarcely lights up. A signal cannot be seen when the brightness of the raster is high.

8. Push the JUMP again to release the cut off.

NO.

24 25 26 27 28 29 38

Disp.

RDRV GDRV BDRV RCUT GCUT BCUT SBRT

Item

Red Drive Green Drive Blue Drive Red Cut-off Green Cut-off Blue Cut-off Sub Bright

All Models

* 46 37

14:Fix

1. Set program palette to STANDARD and pust RESET.

2. Input an entire white signal.

3. Set to Service Adjustment Mode.

4. Set the PICTURE and BRIGHT to minimum.

5. Adjust with SBRT if necessary.

6. Set RCUT to "14".

7. Select GCUT and BCUT with

8. Adjust with

and for the best white balance.

and .

9. Set the PICTURE and BRIGHT to maximum.

10. Select GDRV and BDRV with and .

11. Adjust with 3 and 6 for the best white balance.

12. Write into the memory by pressing

then

13. Repeat steps 1-12 for GDR4, BDR4, GCU4 and BCU4 using Video 4 input.

* Use values from Sub Contrast Adjustments

NOTE:

White balance should be adjusted after Sub Contrast because RDRV is also used in Sub Contrast Adjustment. (See page 27).

— 18 —

SECTION 4

SAFETY RELATED ADJUSTMENTS

KV-38FV16K/38FV26T

4-1. R530, R531 CONFIRMATION METHOD

(HOLD-DOWN CONFIRMATION) AND READJUSTMENTS

Always perform the following adjustments when replacing the following components marked with a diagram:

Part Replaced ( ) Adjustment ( )

R387, R550, R529, R530, R531, R532, R533, D519, D520, D521, IC501, C531, C532, T503, IC351, IC355, Q301, R356, R359, R361,

D302...............................A Board

IC643, R661 .................. G Board

mark on the schematic

HV HOLD-DOWN R530, R531

Preparation before Confirmation

1. Using a Variac, apply AC input voltage: 130+2.0/-0.0 VAC.

2. Turn the POWER switch ON.

3. Input a white signal and set the PICTURE and BRIGHT controls to maximum.

4. Confirm that the voltage of more than 23.0 VDC appears between TP85 and ground on the A Board.

Hold-Down Readjustment

If the setting indicated in Step 2 of Hold-Down Operation Confirmation cannot be met, readjustment should be performed by altering the resistance value of R530, R531 component marked with

digital multimeter

R531

R530

DC Power Supply

TP85

T503

T503 FBT

FBT

ammeter 3mA DC range

Hold-Down Operation Confirmation

1. Connect the current meter between Pin 11 of the FBT (T503) and the PWB land where Pin 11 would normally attach (See Figure 1 above).

2. Input a dot signal and set PICTURE and BRIGHTNESS to minimum: IABL = 2175 + 100/ -325 µA.

3. Confirm the voltage of A Board TP91 is 135 ± 1.5 VDC.

4. Connect the digital voltmeter and the DC power supply to TP85 and ground. (See Figure 1).

5. Increase the DC power voltage gradually until the picture blanks out.

6. Turn DC power source off immediately.

7. Read the digital voltmeter indication (standard = 27.24 + 0.0/ - 0.1 VDC).

8. Input a white signal and set PICTURE and BRIGHTNESS to maximum: IABL = 2175 + 100/ -325 µA.

9. Repeat steps 4 to 7.

Figure 1

4-2. B+ VOLTAGE CONFIRMATION AND ADJUSTMENT

Note: The following adjustments should always be performed when replacing the following components, which are marked with on the schematic diagram on the G Board.

G BOARD: IC643, R661

1. Using a V ariac, apply AC input voltage: 130 + 2.0/-0.0 VAC

2. Input a monoscope signal.

3. Set the PICTURE control and the BRIGHT control to initial reset value.

4. Confirm the voltage of G Board CN641 between pin

to ground is less than 136.5 VDC.

5. If step 4 is not satisfied, replace the R661and repeat the above steps.

— 19 —

KV-38FV16K/38FV26T

SECTION 5

CIRCUIT ADJUSTMENTS

ELECTRICAL ADJUSTMENTS BY REMOTE COMMANDER

Use the Remote Commander (RM-Y149A, RM-Y170) to perform the circuit adjustments in this section. NOTE: Test Equipment Required:

• Pattern generator

• Frequency counter

• Digital multimeter

• Audio oscillator

5-1. SETTING THE SERVICE ADJUSTMENT

MODE

1. Standby mode (Power off).

2. Press

Display Channel

Sound volume Power

on the Remote Commander (Press each button within a second).

Service Adjustment Mode In

Item order

Item data

SERVICE

Disp. (Item)

VP HSIZ

Mode

3. The CRT displays the item being adjusted.

4. Press

5. Press

6. Press

or on the Remote Commander to select the item. or on the Remote Commander to change the data.

then to write into memory.

5-2. MEMORY WRITE CONFIRMATION

METHOD

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

2. Turn the power switch ON and set to Service Mode.

3. Call the adjusted items again to confirm they were adjusted.

5-3. ADJUST BUTTONS AND INDICATORS

MUTING

DISPLAY

POWER

ENTER

Service Adjustment Mode Memory

Item

Item data

order

WRITE

Item data

SERVICE

Green

Red

Carry out step 7 when adjusting IDs 0 to 7 and when replacing and adjusting IC002.

Disp. (Item)

VP HSIZ

7. Press then on the Remote Commander to initialize.

Item

Disp.

order

(Item)

HSIZ

8. DO NOT turn off set until SERVICE appears.

VOLUME

RM-Y170

— 20 —

5-4. ADJUSTMENT ITEMS

Name

HPOS

HSIZ

VBOW

VANG

TRAP

PAMP

UCPN

LCPN

VSIZ

VPOS

VLIN

VSCO

VZOM

EHT

ASP

ASP1

SCRL

HBSW

— 21 —

LBLK

RBLK

HDW

EWDC

LVLN

UVLN

RDRV

GDRV

BDRV

RCUT

GCUT

BCUT

RDR4

GDR4

BDR4

RCU4

GCU4

BCU4

SBRT

RON

GON

BON

AXPL

CBPF

COFF

TSSP

TSPF

VSSP

VSPF

YSSP

Description Data Adj/Fix Initial 36" Average Data Comments

Trapezium Adjustment

Pin Compensation

Upper Corner Pin

Lower Corner Pin

V-Linearity

S-Correction

16:9 CRT Zoom Mode On/Off 0,1 FIX 0

Vertical Size High Voltage Correction

Aspect Ration Control 4:3 Mode Aspect Ration Control 16:9 Mode 16:9 Vertical Scroll During Zoom

H Blanking Switch

Left Blanking

Right Blanking

H Drive Pulse Width

EW/DC Display 4x3 on 16x9 CRT

Picture Bottom Lin Adjust

Picture Top Lin Adjust

Green Drive

CXA2131AS

Red Cutoff

Green Cutoff

Blue Cutoff

Video 4 Red Drive

Video 4 Green Drive

Video 4 Blue Drive

Video 4 Red Cutoff

Video 4 Green Cutoff

Video 4 Blue Cutoff

Sub Brightness

Chroma BPF On/Off

Color On/Off

Sub Sharpness for TV Input

Sharpness fo for TV Input

Sub Sharpness for Video Input

Sharpness fo for Video Input Sub Sharpness for YUV Input

H-Position

H-Size

AFC Bow

AFC Angle 0-15 Adj 5

V-Size

V-Position

Red Drive

Blue Drive

Red Off

Green Off

Blue Off

Axis PAL

0-63 Adj 0-63 Adj 0-15 Adj

0-15 Adj 0-63 Adj 0-63 Adj 0-63 Adj 0-63 Adj 0-63 Adj 0-15 Adj 0-15 Adj

0-15 0-63 0-63 0-63

0,1 0-15 0-15

0,1

0,1 0-15 Adj 0-15 Adj 0-63 Adj 0-63 Adj 0-63 Adj 0-15 0-15 Adj 0-15 Adj 0-63 Adj 0-63 Adj 0-63 Adj 0-15 0-15 Adj 0-15 Adj 0-31 Adj

0,1

0,1 0-15

FIX 4 FIX 47 FIX 47 FIX 31 FIX 1 FIX 15 FIX 0 FIX 1 FIX 0

FIX 7

FIX 1 FIX 1 FIX 1 FIX 0 0 FIX 1 1 FIX 0 0

Fix by model 6

FIX 1

Fix by model 7

FIX 1

Fix by model 7

Range Data

FV16

6 32 36 36

0 31

0 31 31 31

7 31 31 31

7 15

FV26

7 5

8 30 35 35

7 39

4 47 47 31

1 15

0 54 46 37 14 10

8 44 36 29 14 14 10

0: 2ms delay, 63: 2ms advance EW DC bias, 0: -0.5V, 31: 0V, 63: +0.5V 0: top/bottom delay 900ns, 7: center, 15: top/bottom advance 900ns 0: top delay/bottom advance 650ns, 7: center,

15: top advance/bottom delay 650ns 0: 1.5ms advance, 15: 1.5ms delay 0: 0.15Vpp, 31: 0.7Vpp, 63: 1.3Vpp 0: -0.4V, 63: +0.4V 0: -0.4V, 63: +0.4V 0: -15%, 31: 0%, 63: +15% 0: -0.1V, 31: 0V, 63: +0.1V 0: 85% top enlarged, 7: 100% top normal, 15: 115% top compressed 0: 0V added to VD, 15: 100mVpp added to VD 0: Zoom Off, 1: Zoom On (top/bottom cut by 25% when ASPECT=31, RGB blanked in this interval) 0: Picture adjusted 0%, 15: Picture Adjusted -5% 0: 75%(16x9 CRT Full), 31: 100%(4x3 CRT Full), 63: 110% 0: 75%(16x9 CRT Full), 31: 100%(4x3 CRT Full), 63: 110% 0: Scrolled toward top 32H, 63: Scrolled toward bottom 32H 0: OFF, 1: ON 0: +1.2ms, 7: Center, 15: -1.2ms 0: +1.2ms, 7: Center, 15: -1.2ms 0: Normal Mode (25ms), 1: Narrow Pulse Width 0: OFF, 1: ON 0: 100%, 15: 85% Picture top compressed 0: 100%, 15: 85% Picture bottom compressed 0: 1.5Vpp, 63: 3.0Vpp Red Signal Output 0: 1.5Vpp, 63: 3.0Vpp Greem Signal Output 0: 1.5Vpp, 63: 3.0Vpp Blue Signal Output 0: 3.5mA IK, 7: 13mA IK, 15: 22.7mA IK 0: 3.5mA IK, 7: 13mA IK, 15: 22.7mA IK 0: 3.5mA IK, 7: 13mA IK, 15: 22.7mA IK 0: 1.5Vpp, 63: 3.0Vpp Red Signal Output 0: 1.5Vpp, 63: 3.0Vpp Greem Signal Output 0: 1.5Vpp, 63: 3.0Vpp Blue Signal Output 0: 3.5mA IK, 7: 13mA IK, 15: 22.7mA IK 0: 3.5mA IK, 7: 13mA IK, 15: 22.7mA IK 0: 3.5mA IK, 7: 13mA IK, 15: 22.7mA IK Sub Brightness 0:OFF, 1:ON 0:OFF, 1:ON 0:OFF, 1:ON 0: Normal Axis, 1: Forced PAL Asix 0: BPF OFF, 1: BPF ON 0: Chroma OFF, 1: Chroma ON 0=-12dB, 7=+3.5dB, 15=+9dB 0=2.5MHZ, 1=3.0MHz 0=-12dB, 7=+3.5dB, 15=+9dB 0=2.5MHZ, 1=3.0MHz 0=-12dB, 7=+3.5dB, 15=+9dB

KV-38FV16K/38FV26T

ADJUSTMENT ITEMS (cont.)

Name

YSPF

AXNT

PREL

DCT

ABLM

FSC

HOSC

VSS

HSS

— 22 —

HMSK

VTMS

AFC

REFP

VBSW

BKOF

AGN2

SREF

BBLP

BBHP

SVOL

SBAL

SBAS

STRE

SPCA

CENA

INPA

COUT

YAPS

NSDS

MSS

EXAD

PECS

EXCS

CPP

HDP

CDL

DYCO

DYGA

DCCO

DCGA

YNRK

YNRI

YNRL

CNRK

CNRI

CNRL

ID1O

ID1W

ID1N

CLK

CXA2131AS

BH3868

SRS

TDA7464

uPD64082

3D COMB

Description Data Adj/Fix Initial 36" Average Data Comments

Range Data

Sharpness fo for YUV Input

Axis NTSC

Pre/Overshoot Ratio

DC Transmission Ratio

ABL Mode

FSC Output On/Off

H VCO Frequency Adjustment

Vsync Slice Level

Hsync Slice Level

Macrovision Countermeasure

Select Signal VTIM Pin

AFC

REFP

VBLK Width Control 0-3 FIX 0 0

ABL Signal Detection Level

Aging Mode 2 - Black Output Mode

Surround Effect

BBE Low PAss BBE High Pass

Sub Volume Sub Balance

Sub Bass

Sub Treble

SRS Space Attenuation

SRS Center Attenuation

Input Attenuation

Chroma Signal Gain / BPF

Y V-Compensation/Peaking

Standard/Non-Standard Processing

Inter-frame/Inter-line Mode

External ADC Insert

Pedestal Error Correction

C sync Input

Y ADC Amplitude/Clamp Method

H Phase Fine Adjustment

C Output Delay Fine Adjustment

Y Moving Coring Level

Y Moving Coring Gain

C Moving Coring Level

C Moving Coring Gain

YNR Non-linear Filter Gain

YNR Non-linear Filter Convergence

YNR Non-linear Filter Limit Level

CNR Non-linear Filter Gain

CNR Non-linear Filter Convergence

CNR Non-linear Filter Limit Level

ID-1 Superimpose Signal Specifies bit A1 of Word 0 Spedifies bit A2 of Word 0

CLK8 Pin Output

0,1 0,1 0,1 0,1 0,1 0,1

0-15

0,1 0,1 0,1 0-3 0-3 0,1

0,1

0,1 0-15 0-15 0-15 0-15 0-15 0-15 0-15 0-63 0-63

0-127

0-3

0,1

0-3

0-7

0-7 0-15 0-15 0-15 0-15

0,1

0-3

0,1

0-3

0,1

FIX 1 FIX 0 FIX 1 FIX 1 FIX 1 FIX 1 1 FIX 7 12 FIX 0 1 FIX 0 1 FIX 1 1 FIX 0 0 FIX 0 0 FIX 0 0

FIX 0 0 FIX 0 0 FIX 7 7 FIX 5 FIX 3 FIX 7

FIX 7 Fix by model 5 Fix by model 3

FIX 0

FIX 3

FIX 3 3

FIX 0 0

FIX 1 1

FIX 0 0

FIX 3 3

FIX 5 5

FIX 2 2

FIX 10 10

FIX 2 2

FIX 9 9

FIX 1 1

FIX 0 0

FIX 1 1

FIX 0 0

FIX 1 1

FIX 0 0

FIX 1 1

FV16

KV-38FV16K/38FV26T

FV26 1 0 1 1 1

5 3 7

8 8

3 0 0 3

0=2.5MHZ, 1=3.0MHz 0: Japan Axis, 1: US Axis 0: 1:1, 1: 2:1 0:100%, 1:85% 0:Picture ABL, 1:Picture/Brightness ABL 0: FSC output OFF, 1: FSC output ON 0: Low, 15: High (40 Hz Steps) 0: 1/3 from sync tip, 1: 1/4 from sync tip 0: 1/3 from sync tip, 1: 1/4 from sync tip 0: Off, 1: ON 0: V retrace timing, 1: Hsync signal, 2: Vsync signal, 3: don't use 0: High Gain, 1: Medium Gain, 2: don’t use, 3: Extremely low gain 0: R=20H/G=21H/B=22H, 1: R=23H/G=24H/B=25H 0: 9H from B, 1: 10H from B, 2: 11H from B, 3:12H from B

(When JUMP SW=1) 0: VTH=3V, 1: VTH=1V 0: Black Output Mode OFF, 1: Black Output Mode ON 0: Min, 15: Max (8-15 LOOP=1) 0: 0.5dB, 15: 10dB 0: 0.5dB, 15: 10dB 0:-0 volume steps, 15:-15 volume steps 0: +Right, 15:+Left 0:-7 steps, 15: +8 steps 0:-7 steps, 15: +8 steps 0: 0dB, 63: -31db (1dB steps) 0: 0dB, 63: -31db (1dB steps) 0: 0dB, 127: -31.5dB (0.5dB steps) Input/Output gain=1 / BPF ON Correctin enabled for digital/analog inputs Standard adaptive processing Adaptive Processing Internal Y-ADC Standard Use CSI Y-ADC & C-ADC Vtb=1.25V Phase +/- 0msec Y/C Delay +/- 0msec 0: Close to moving pictures, 15: Close to still pictures 0: Close to still Pictures, 15: Close to moving Pictures 0: Close to moving pictures, 15: Close to still pictures 0: Close to still Pictures, 15: Close to moving Pictures x7/8 large noise reduction and large after image 6LSB small noise reduction and small after image 0: YNR Off , 3: 3LSB large noise reduction x7/8 large noise reduction and large after image 6LSB small noise reduction and small after image 0: CNR OFF , 3: 3LSB large noise reduction Through, no superimposition 0: 4x3, 1: 16x9 0: normal, 1:letterbox 0: Output 8fsc, 1: Output OFF

Description Data Adj/Fix Initial 36" Average Data Comments

Range Data

FV26

Name

FV16

ST0S

Select ST0 Pin Output Signal

0-3

FIX 1 1

External Y-ADC clamp pulse

WSC

Noise Detection Coring

0-3

FIX 1 1

1LSB coring for noise detection circuit

VTRH

H-sync Non-Standard Detection Hysteresis

0-3

FIX 1 1

Low hysteresis (2 clock pulses)

VTRR

H-sync Non-Standard Detection Sensitivity

0-3

FIX 1 1

Medium sensativity (+/- 8 clock pulses)

LDSR

Frame Sync Non-Std Detection Sensativity

0-3

FIX 2 2

Low sensativity (1.5 clock pulses)

PWRE

Internal ADC Input Range

0,1

FIX 0 0

Same input range on Y-ADC and C-ADC

VAPG

Vertical Aperture Compensation Gain

0-7

FIX 4 4

0: Correction OFF, 7: Max Correction

VAPI

Vertical Aperture Comp Convergence

0-31

FIX 12 12

0: Correction OFF, 31: Max Correction

TEST

Test Bit

0,1

FIX 0 0

Normal Mode

YPFT

Y Peaking Filter Center Frequency

0-3

FIX 3 3

4.22 MHz

YPFG

Y Peaking Filter Gain

0-15

FIX 7 6

0: -1 gain, 15: 0.875 gain

V1PS

Horizontal Dot Supression Level

0-3

FIX 2 2

Medium suppression

VEGS

Vertical Dot Supression Level

0-3

FIX 2 2

Medium supression

CC3N

Line Comb C Separation Filter

0,1

FIX 0 0

Narrow bandwidth

C0HS

C Signal Delay Time at NR

0,1

FIX 0 0

1H Delay

CLPH

Y-ADC Clamp Test Bit

0,1

FIX 0 0

Normal Mode

SEL2

DC Detection High Freq Sensativity

0,1

FIX 0 0

Low sensativity, Close to still pictures

SEL1

DY detection Low Freq Sensativity

0,1

FIX 0 0

Low sensativity, Close to still pictures

YHCO

Y High Freq Coring

0-3

FIX 1 0

Small Amount of coring (+/- 1LSB)

YHCG

Y High Freq Coring Gain

0,1

FIX 0 0

Gain = 1

OVST

Non Standard Detection Test Bit

0,1

FIX 0 0

Normal Mode

CSHD

H/V counter Test Bit

0,1

FIX 0 0

Normal Mode

KCTT

H/V counter Test Bit

0-3

FIX 0 0

Normal Mode

SHT

Non Standard Detection Test Bits

0,1

FIX 0 0

Normal Mode

VCT

H/V counter Test Bit

0,1

FIX 0 0

Normal Mode

OTT

H/V counter Test Bit

0,1

FIX 0 0

Normal Mode

CL2D

Clock Generator Test Bit

0,1

FIX 1 1

Normal Mode

CGGT

Clock Generator Test Bit

0,1

FIX 0 0

Normal Mode

CLEB

Clock Generator Test Bit

0,1

FIX 0 0

Normal Mode

CGT

Clock Generator Test Bit

0,1

FIX 0 0

Normal Mode

HPLL

Horizontal PLL Filter

0,1

FIX 1 1

Quick convergence

BPLL

Burst PLL Filter

0,1

FIX 1 1

Quick convergence

FSCF

Burst Extraction Gain

0,1

FIX 0 0

High gain

PLLF

PLL Loop Gain

0,1

FIX 1 1

High gain, quick convergence

KILR

Killer Detection Reference

0-15

FIX 3 3

0: Detection off, 15: High detection sensativity

HSSL

Horizontal Sync Slice Level

0-15

FIX 12 12

0: 4LSB, 15: 19LSB

VSSL

Vertical Sync Slice Level

0-15

FIX 8 8

0: HSSL + 0LSB, 15: HSSL + 15LSB

BGPS

Burst Gate Start Position

0-15

FIX 5 5

0: Hsync center + 2ms, 15: Hsync center +5.75ms

BGPW

Internal Burst Gate Pulse Width

0-15

FIX 10 10

0: 0.5ms, 15: 4.25ms

ADCL

ADC Clock Delay

0-3

FIX 3 3

0: 0ns, 3: 20.5ns (typical)

ADPD

ADC Power Down

0,1

FIX 1 1

Stop ADC when not in use

NSDW

Non Standard Detection Test Bit

0,1

FIX 0 0

Normal Mode

CNRF

CNR Section Test Bit

0,1

FIX 0 0

Normal Mode

SHPR

Controls both DL APACON and SRT

0-127

Fix by Model 52

0: Minimum, 127: Maximum

BLAD

Black Area Detect

0-3

FIX 0 0

0: 10IRE, 1: 20IRE, 2: 30IRE, 3: 40IRE

SRTS

SRT Start Amplitude

0-3

FIX 3 3

0: 7IRE, 1: 10IRE, 2: 14IRE, 3: 28IRE

YNR

Controls YNR ON/OFF

0,1

FIX 1 1

YNR ON

GIRE

Gamma Correction Start Point

0-3

FIX 3 3

0: 70IRE, 1: 80IRE, 2: 90IRE, 3: OFF

DAC1

1 bit DAC Output

0,1

FIX 0 0

Open

DAC2

1 bit DAC Output

0,1

FIX 0 0

Open

PIC IMP

TA1226N

3D COMB

uPD64082

— 23 —

KV-38FV16K/38FV26T

ADJUSTMENT ITEMS (cont.)

Name

GCUR

BLKC

— 24 —

TEST

RTC

VMLO

PIPH

PIPV

POFV

POFH

VACQ

HACQ

PVID

VERB

PSEL

SELD

4SLD

PCOR

AGCR

AGCM

AGCV

CLMD

CLMS

LMOF

PYDL

FRMY

FRSL

FRWH

FRWV

PBSW

CKIL

COLO

PSHU

4PSU

CPLL

SCAD

PCON

4PCN

PBRT

4PBR

IPER

4IPR

IPEG

4IPG

IPEB

4IPB

BLKR

BLKB

PVGA

4PVG

PIC IMP

TA1226N

PIP

SDA9588X

PIP-YC

Description Data Adj/Fix Initial 36" Average Data Comments

Controls Curve of Gamma Correction

Black Conpensation

Test Bit

Gain of DL APACON at 8MHz Peak

Compensation Ratio of SRT and DL APACON

Gain for Menu VM=LOW

PIP H-position PIP V-position

Position Ofset Vertical

Position Ofset Horizontal PiP V-Acquisition Window PiP H-Acquisition Window

PiP Vsync Delay

Vertical Blanking 0,1 FIX 0

SELDOWN Bit Control

Select PYS Delay

Select PYS Delay YUV Input

Position Correction

AGC Gain Control Reset

AGC Mode 0-3 FIX 0 ADC Value

Clamp Pulse Duration

Clamp Pulse Start Luminance Offset

Y/C Delay

Frame Y Level

Frame Type Select

Frame Width Horizontal

Frame Width Vertical

PiP Block Selection (PIPBG vs PIPBLK)

Color Killer Threshold

Color Killer Off

PiP Sub Hue

PiP Sub Hue YUV Input

Chroma PLL Off

Sub Carrier Freq Fine Adjustment

PiP Contrast

PiP Contrast YUV Input

PiP Brightness

PiP Brightness YUV Input

V Pedestal

V Pedestal YUV Input

Y Pedestal

Y Pedestal YUV Input

U Pedestal

U Pedestal YUV Input

Invert V Pedestal Invert U Pedestal

Peak Level V Output

Peak Level V Output YUV Input

Range Data

0,1 0,1 0-3 0-7 0-7 0-2

0-127

0-63 0-15 0-31 0-15 0-15 0-31

0,1 0-15 0-15

0,1

0-15

0-3

0-3 0-15 0-15

0,1

0-7

0-3

0,1

0-3

0,1 0-15 0-15

0,1 0-31 0-15 0-15 0-15 0-15 0-15 0-15 0-15 0-15 0-15 0-15

0,1

0-255 0-255

FIX 0 0 FIX 1 1 FIX 3 3 FIX 0 0 FIX 4 4 FIX 1 1 FIX 34 FIX 22 FIX 4 FIX 17 FIX 8 FIX 8 FIX 0

FIX 1 FIX 8 FIX 8 FIX 1 FIX 1

FIX 11 FIX 3 FIX 2 FIX 3 FIX 8

Fix by Model 6

FIX 1 FIX 4 FIX 1 FIX 0 FIX 0 FIX 0 FIX 7 FIX 7 FIX 0 FIX 5 FIX 0 FIX 0 FIX 0 FIX 0 FIX 0 FIX 4 FIX 0 FIX 0 FIX 1 FIX 1 FIX 1 FIX 0 FIX 84 FIX 69

FV16

KV-38FV16K/38FV26T

FV26

34 22

8 8 0

0 1

8 8 1 1

3 2 3 2 5 1 4 1 1 0 0 7 7 0 6 0 0 2 2 0 0 0 0 1 1 0

1 84 69

0: -2.4dB, -1.6dB OFF Pin 20 Output: 0=RS, 1=SHR, 2=RTC, 3=TEST3 0: 0dB, 7: +6dB 0: Min, 7: Max 0=off, 1=-6dB, 2=-3dB, 3=0dB 0:Right, 127:Left 0:Up, 63:Down Vertical PiP Offset from Center Horizontal PiP Offset from Center 0: -8 lines up, 8: Center, 15: +7 pixels down 0: -16 pixels right, 8: Center, 15: +14 pixels left Step size 3.56ms< 1 step < 6.4ms 0: DAC Blanking during line blanking interval,

1: DAC Blanking during line AND field intervals 0:Open out, 1:TTL out 0: -8 clock cycles, 8: NO delay, 15: +7 clock cycles 0: -8 clock cycles, 8: NO delay, 15: +7 clock cycles 0: OFF, 1: ON (Position correction during varying parent frequency) 0: Normal, 1: Reset (transition of 0-->1 resets AGC) 0: Sync height & ADC Overflow, 1: sync height, 2: ADC overflow, 3: AGC Fixed 0: Input valtage 0.5Vpp, 15: Input Voltage is 1.5Vpp 0: 0.5ms, 1: 0.9ms, 2: 1.2ms, 3: 1.5ms 0: 1.0ms, 1: 1.5ms, 2: 2.0ms, 3: 2.5ms 0: NO OFFSET, 1: +16LSB, 2: -8LSB, 3: -16LSB 0: -8 pixels, 15: +7 pixels Adjusts 4 MSB of Frame Y Signal 0: Normal frame, 1: 3D frame 0: No frame, 7: 7 pixels 0: No frame, 3: 3 lines Blocking Type: 0= PIPBG(gray), 1=PIPBLK(black) 0: -30dB, 1: -18dB, 2: -24dB, 3: color always off 0: Color killer active, 1: Color always on PiP sub hue PiP sub hue 0: Chroma PLL active, 1: Chroma PLL free running 0: -150 PPM, 7: default, 31: +310 PPM 0: nominal, 15: +30% increase 0: nominal, 15: +30% increase 0: nominal, 15: +20% increase 0: nominal, 15: +20% increase 0: nominal, 15: +15LSB offset 0: nominal, 15: +15LSB offset 0: nominal, 15: +15LSB offset 0: nominal, 15: +15LSB offset 0: nominal, 15: +15LSB offset 0: nominal, 15: +15LSB offset 0: Offset add during blanking, 1: Offset add during active 0: Offset add during blanking, 1: Offset add during active 0: 0.3Vpp, 192: 1.0Vpp, 255: 1.2Vpp 0: 0.3Vpp, 192: 1.0Vpp, 255: 1.2Vpp

Name

PUGA

4PUG

PYGA

4PYG

CHRO

SATA

YPKG

4YPK

YCOR

CLPL

RTCO

T2CO

V2CO

4COL

T2HU

V2HU

4SHU

XJGL

— 25 —

LNJ1

DUM1

VOSD

DISP

RAMW

ICMP

IPOR

FAWD

TILT

0 VPIC

1 VBRT

2 VCOL

3 VSHP

4 VVM

5 VTRI

6 VGMA

7 VBLK 8 VAPA Set Current Program Palette APACON 0,1 FIX by Palette 1 0 1 1 1 0=APACON OFF, 1=APACON ON

9 VSRT Set Current Program Pallette SRT 0,1 FIX by Palette 0 1 0 0 0 0=SRT OFF, 1=SRT ON

10 VNRM Set Current Program Pallette NRMD 0,1 FIX by Palette 0 0 0 0 1 0=3D YCS, 1=2D YCS

CXD2085

M306V5

SDA9588X

PIP-YC

DAC

CXA1315

ID1

CCD

PROGRAM

PALETTE

Decoding Result Held For VCR Scanning

OSD Non-interlace Even/Odd Display

Set Current Program Pallette PICTURE Reset Level Set Current Program Pallette BRIGHTNESS Reset Level Set Current Program Pallette COLOR Reset Level Set Current Program Pallette SHARPNESS Reset Level Set Current Program Pallette VM Reset Level Set Current Program Pallette Color Temp Reset Setting Set Current Program Pallette YC/J GAMMA Set Current Program Pallette Black Stretch

Description Data Adj/Fix Initial 36" Average Data Comments

Peak Level U Output

Peak Level U Output YUV Input

Peak Level Y Output

Peak Level Y Output YUV Input

UV Output Polarity

Color Saturation Adjustment

Y Peaking Adjustment

Y Peaking Adjustment YUV Input

Y Coring Enable

Clamp Pulse Length

Rotation Coil

Sub Color TV Input

Sub Color Video Input

Sub Color YUV Input

Sub Hue TV Input

Sub Hue Video Input

Sub Hue YUV Input

ID-1 Signal Location

CCD Dummy Register

VChip OSD Test Register

OSD Position

OSD RAM Window

OSD Non-interlace Threshold

Factory AutoWide Mode

Tilt Correction Spec

PROGRAM FOR EACH PALETTE MODE VIVID STD MOVIE SPORTS

0-255 0-255 0-255 0-255

0,1

0-15

0-7 0-7 0,1 0-3

0-63

0-7 Adj 0-7 Adj 0-7 Adj 0-7 Adj 0-7 Adj 0-7 Adj

0,1 0,1

0,1

0-63 Adj

0,1

0-15

0-3 0,1 0,1

0-63 FIX by Palette 50 63 50 38 63 0=MIN, 63=MAX

0-63 FIX by Palette 31 31 31 31 31 0=MIN, 63=MAX

0-63 FIX by Palette 31 38 31 31 38 0=MIN, 63=MAX

0-63 FIX by Palette 31 31 31 31 31 0=MIN, 63=MAX

0-3 FIX by Palette 1 2 1 0 2 0=OFF, 1=LOW, 2=HIGH, 3=N/A

0-3 FIX by Palette 1 0 1 2 0 0=COOL, 1=NEUTRAL, 2=WARM, 3=N/A

0-3 FIX by Palette 2 3 2 2 2 0=GAMMA CORRECTION OFF, 3=+12 IRE CORRECTION @ 40 IRE INPUT

0,1 FIX by Palette 1 1 1 1 1 0=BLACK STRETCH OFF, 1=BLACK STRETCH ON

FIX 52

FIX 36 Fix by Model 104 Fix by Model 129

FIX 0

FIX 8

FIX 7

FIX 1

FIX 0

FIX 31

120 120 120

15 15 15

FIX 0

15 FIX 0 FIX 4 Fix 1 Fix 0 Fix 0

Range Data

FV16

52 36 35 37

31 104 148 137

FV26

0: 0.3Vpp, 192: 1.0Vpp, 255: 1.2Vpp 0: 0.3Vpp, 192: 1.0Vpp, 255: 1.2Vpp 0: 0.3Vpp, 192: 1.0Vpp, 255: 1.2Vpp

0 9 7 7 1 0

0 0

0 4 1 0 2

0: 0.3Vpp, 192: 1.0Vpp, 255: 1.2Vpp 0: +U/+V output, 1: -U/-V output 0: No color, 8: nominal saturation, 15: nominal x 1.875 0: No peaking, 7: Strongest Peaking 0: No peaking, 7: Strongest Peaking 0: OFF, 1: ON 0=5ms, 1=3.75ms, 2=2.5ms, 3=1.25ms Rotation coil adjustment for nominal value TV Sub Color Adjustment (CXA2039 YUV Models AT DAC) VIDEO1-3 Sub Color Adjustment (CXA2039 YUV Models at DAC) YUV Sub Color Adjustment (CXA2039 YUV Models at DAC) TV Sub HUE Adjustment (CXA2039 YUV Models at DAC) VIDEO1-3 Sub HUE Adjustment (CXA2039 YUV Models at DAC) YUV Sub HUE Adjustment (CXA2039 YUV Models at DAC)

Hold data during VCR variable speed playback Search for ID-1 data +/- one line in VBI

Used to display CC data in Service Mode Used to display VChip data in Service Mode

OSD horizontal position

0: 0 fields, 15: 15 fields 0=Even OSD display, 1= Odd OSD display, 2&3=N/A 0= No Autowide in RF mode, 1= Autowide in RF Mode 0= New Tilt Spec for AA2U (less VANG offset), 1= AA2W/AA2H Tilt Spec

KV-38FV16K/38FV26T

+ 56 hidden pages

Sony KV-38FV16K, KV-38FV26T Service manual

SPECIFICATIONS

TABLE OF CONTENTS

WARNINGS AND CAUTIONS

DISASSEMBLY

SET-UP ADJUSTMENTS

SAFETY RELATED ADJUSTMENTS

CIRCUIT ADJUSTMENTS