SONY KV-21FK120 Service Manual

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL

MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.

KV-21FK120

RM-Y194 LATIN NORTH SCC- S73H-A

BA-6

CHASSIS

ORIGINAL MANUAL ISSUE DATE: 4/2005

REVISION DATE SUBJECT

4/2005 No revisions or updates are applicable at this time.

TRINITRON® COLOR TELEVISION

9-965-980-01

Self Diagnosis

Supported model

SERVICE MANUAL

MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.

KV-21FK120

RM-Y194 LATIN NORTH SCC- S73H-A

BA-6

CHASSIS

9-965-980-01

KV-21FK120 RM-Y194

TRINITRON® COLOR TELEVISION

TABLE OF CONTENTS

SECTION TITLE PAG E

Specifi cations ............................................................................................................................................................................. 4

Warnings and Cautions .............................................................................................................................................................. 5

Safety Check-Out ....................................................................................................................................................................... 6

Self-Diagnostic Function ............................................................................................................................................................. 7

SECTION 1: DISASSEMBLY ............................................................................................................................................................. 9

1-1. Rear Cover Removal .......................................................................................................................................................... 9

1-2. Chassis Assembly Removal ............................................................................................................................................... 9

1-3. Service Position ............................................................................................................................................................... 10

1-4. Picture Tube Removal .......................................................................................................................................................11

Anode Cap Removal Procedure .......................................................................................................................................11

Wire Dressings ................................................................................................................................................................. 12

SECTION 2: SET-UP ADJUSTMENTS ............................................................................................................................................ 17

2-1. Beam Landing .................................................................................................................................................................. 17

2-2. Convergence .................................................................................................................................................................... 18

2-3. Focus ............................................................................................................................................................................... 19

2-4. Screen (G2) ...................................................................................................................................................................... 20

SECTION 3: SAFETY RELATED ADJUSTMENTS ......................................................................................................................... 21

3-1.

X

R565 Confi rmation Method (HV Hold-Down Confi rmation) and Readjustments ........................................................21

3-2. B+ Voltage Confi rmation and Adjustment ........................................................................................................................ 21

KV-21FK120

SECTION 4: CIRCUIT ADJUSTMENTS .......................................................................................................................................... 23

4-1. Remote Adjustment Buttons and Indicators ..................................................................................................................... 23

4-2. Accessing Service Adjustment Mode ............................................................................................................................... 23

4-3. White Balance Adjustments ............................................................................................................................................. 24

4-4. Memory Write Confi rmation Method ................................................................................................................................ 24

4-5. Service Data List .............................................................................................................................................................. 25

4-6. ID Map Table .................................................................................................................................................................... 33

4-7. A Board Adjustments ........................................................................................................................................................ 34

SECTION 5: DIAGRAMS ................................................................................................................................................................. 37

5-1. Circuit Boards Location .................................................................................................................................................... 37

5-2. Printed Wiring Board and Schematic Diagram Information .............................................................................................. 37

5-3. Block Diagram and Schematics ....................................................................................................................................... 38

A Board Schematic Diagram ............................................................................................................................................ 39

CV Board Schematic Diagram ......................................................................................................................................... 41

KR Board Schematic Diagram ......................................................................................................................................... 42

HK Board Schematic Diagram ......................................................................................................................................... 44

5-4. Semiconductors ............................................................................................................................................................... 45

SECTION 6: EXPLODED VIEWS .................................................................................................................................................... 46

6-1. Picture Tube ..................................................................................................................................................................... 46

6-2. Chassis ............................................................................................................................................................................ 47

SECTION 7: ELECTRICAL PARTS LIST ....................................................................................................................................... 48

KV-21FK120

3

SPECIFICATIONS

p

)

p

KV-21FK120

Power Requirements 120V, 60Hz
Number of Inputs/Outputs

eaker Output(W

S

Power Consumption (W)

In Standby (Max)

Dimensions (W x H x D)

Mass

Television system

American TV standard, NTSC

Channel coverage

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

Y,P

Microphone 2

Head

In Use (Max) 140W

1)

Video

, P

B

Audio

2)

R

3)

2
1

3

10W x 2

hones

4)

1

1W

mm 631 x 468 x 491 mm

in

24

7/8

x 18

3/8

kg 25.4 kg

lbs 56 lbs

1) 1 Vp-p 75 ohms unbalanced, sync negative

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

3) 500 mVrms (100% modulation), Impedance: 47 kilohms

4) This specifi cation is maximum wattage.

x 19

1/4

KV-21FK120

in

Picture tube

FD Trinitron® tube

Visible screen size

20-inch picture measured diagonally

Actual screen size

21-inch measured diagonally

Antenna

75 ohm external terminal for VHF/UHF

Supplied Accessories

Remote Commander RM-Y194

Two Size AA (R6) Batteries
Antenna, Telescopic
Microphone
Converter
Cord with Connector
Video 2 Cable Adaptor

En calidad de compañía asociada a ENERGY

®

, Sony ha determinado que este producto

STAR
cumple con las directrices de uso eficiente de
energía de ENERGY STAR

ENERGY STAR® es una marca registrada de
EEUU.

Fabricado bajo licencia de SRS Labs, Inc. WOW y los
símbolos SRS son marcas regis tradas de SRS Labs,
Inc.

Bajo licencia de BBE Sound, Inc. Licenciado de BBE
Sound, Inc. sobre el numero USP4638258, 5510752 y

5736897. BBE y el símbolo de BBE son marcas
registradas de BBE Sound, Inc.

Sony, WEGA, FD Trinitron, Intelligent Picture y Steady Sound son
marcas comerciales de Corporación Sony.

®

.

Design and specifi cations are subject to change without notice.

KV-21FK120

4

KV-21FK120

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-21FK120

5

SAFETY CHECK-OUT

KV-21FK120

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
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).

0.15 F

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

KV-21FK120

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-21FK120

SELF-DIAGNOSTIC FUNCTION

Self Diagnosis

Supported model

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

Diagnostic Test Indicators

When an error occurs, the STANDBY/TIMER LED will fl ash 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 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 Descrip-

tion

Power does not turn on

+B overcurrent (OCP)*

I-Prot

IK (AKB)

No. of times

STANDBY/ TIMER

lamp fl ashes

Does not light

2 times

4 times

5 times

Self-Diagnositc

Display/ Diagnos-

tic Result

2:0 or 2:1

4:0 or 4:1

5:0 or 5:1

Probable Cause Location

• Power cord is not plugged in.

• Fuse is burned out (F601). (A Board)

• H.OUT (Q506) is shorted. (A Board)

• RGB Amp (IC1751) is shorted.
(CV Board)

• +13V is not supplied. (A Board)

• IC545 is faulty. (A Board)

• Video OUT (IC545) is faulty.
(A Board)

• IC001 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 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.

*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.

Display of Standby/Timer LED Flash Count

2 times

4 times

5 times

LED ON 0.3 sec.

LED OFF 0.3 sec.

LED OFF

3 sec.

Standby/Timer LED

Diagnostic Item Flash Count*

+B Overcurrent 2 times
I-Prot 4 times
IK (AKB) 5 times
*One fl ash 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 fl ashing.

KV-21FK120

7

KV-21FK120

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.

To Bring Up Screen Test

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

DISPLAY

Self-Diagnostic Screen Display

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:

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.

Channel

SELF DIAGNOSTIC

2: +B OCP 0

3: +B OVP N/A

4: VSTOP 0

5: AKB 1

101: WDT N/A

ENT

5

Sound Volume -

Numeral “0” means that no fault was detected.
Numeral “1” means a fault was detected one time only.

POWER

Self-Diagnostic Circuit

FROM

CV BOARD

IC1751 PIN 5

A BOARD

IC001

Y/CHROMA JUNGLE

51

IK-AKBIN

A BOARD

IC545

V. OUT

REF

3

A BOARD

IC001

SYSTEM

IO-BDAT

78

I-Prot

53

A BOARD

IC002

MEMORY

5

BDA

FROM

72

A BOARD

IC561

PIN 7

+B overcurrent (OCP)

Occurs when an overcurrent on the +B (135V) line is detected by pin 72 of IC001 (A Board). If the voltage of pin 72 of IC001 (A Board) is less than 1V
when V.SYNC is more than seven verticals in a period, the unit will automatically turn off.

I-Prot

Occurs when an absence of the vertical defl ection pulse is detected by pin 78 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 2 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.

I-HLDWN

O-LED

79

DISPLAY

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

KV-21FK120

8

1-1. REAR COVER REMOVAL

Rear Cover

KV-21FK120

SECTION 1: DISASSEMBLY

3 Screws +BVTP 3 x 12

1-2. CHASSIS ASSEMBLY REMOVAL

7 Screws +BVTP 4X16

KV-21FK120

Claw

Chassis Assembly

9

1-3. SERVICE POSITION

1

Depress the PC Board clips to release

KR Board.

2

Disconnect the CN515 cable

Press on catch tab to release A Board

3

and gently pull away from the set.

KV-21FK120

CV Board

A Board

KV-21FK120

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.

1

10

8

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

2. Unplug all interconnecting leads from the defl ection yoke, neck

7

3

6

2

9

5

4

assembly, degaussing coils and CRT grounding strap.

3. Remove the CV 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].

KV-21FK120

Coated

Earth

Ground

Strap

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 shatter-hook
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-21FK120

11

WIRE DRESSINGS

Under clip

KV-21FK120

- Fix RGB harness (A/CN301~CV/CN1752) to rotation
coil using a 9mm purse lock (3-703-982-02).

- Dress heaters harness (A/CN586~CV/CN1751) over
rotation coil's lead wire as shown in picture.

- Install rotation coil lead wire connection under DY clip

KV-21FK120

Dress DY's lead wire using a DGC purse lock (4­081-411-02).
Make a loop as shown in picture.
NOTE: Use CRT carbon paint as a reference

12

KV-21FK120

Twist G2 wire without stressing it

Dress focus lead and HV cable together using 5mm purse lock
(3-703-981-02), install purse lock 100mm from HV cable's cap.
Dress focus lead through CV board's hook.

KV-21FK120

100mm

13

KV-21FK120

- Dress earth ground wire behind DGC and through
DY's cilp together with rotation coil.

- Dress left speaker wire through DGC band hook (4­080-810-22).

- Dress Video harness (A/CN200~A/CN201), 5P
(A/CN402~KR/CN4401), 4P (A/CN403~KR/CN4402) audio
harnesses under tuner's F-Pin.

KV-21FK120

14

- Dress Video harness (A/CN200~A/CN201) and lightning

-

wire through CLP001.

- Dress Audio harness (HK/CN2402~KR/CN4403) & video
harness (A/CN200~A/CN201) using a 9mm purse lock (3-703
982-02), No lightening wire.

- Dress 5P (A/CN402~KR/CN4401), 4P
(A/CN403~KR/CN4402) & 6P (HK/CN2402~KR/CN4403)
Audio harnesses using a 5mm purse lock (3-703-981-02).

KV-21FK120

2

IMPORTANT: Following operations must be done with A bord on its final
position

1.- Dress Left and right speaker wire into CRT support, red wire with two
loop as shown in picture.

2.- Dress left speaker wire through DGC band(4-080-810-22) upper hook.
Note: This operation must be performed after (1)
Dress AC-Cord and DGC lead wire through DGC band(4-080-810-22)
lower hook.

3.- Dress AC-Cord into bottom board standing purse lock(4-382-296-11).

3

KV-21FK120

15

(

Left and Right speakers with terminal on the bottom.

KV-21FK120

20mm

For Chile model
Install Ferrite clamp

1-500-586-11) on Chilean AC-Cord one loop.

KV-21FK120

16

SECTION 2: SET-UP ADJUSTMENTS

KV-21FK120

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:
VIDEO MODE: Pro
PICTURE CONTROL: Normal
BRIGHTNESS CONTROL: Normal

2-1. BEAM LANDING

Before beginning adjustment procedure:

1. Feed in the white pattern signal.

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

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.

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.

KV-21FK120

Purity control

corrects this area.

Disk magnets
or rotatable disk
magnets correct

these areas (a-d).

Deflection yoke positioning

b

d

a

b

c d

corrects these areas.

a

c

17

KV-21FK120

2-2. CONVERGENCE

Before starting convergence adjustments:
1 Perform FOCUS, VLIN and VSIZE adjustments.

2. Set BRIGHTNESS control to minimum.

3. Feed in dot pattern.

Vertical Static Convergence

1. Adjust V. STAT magnet to converge red, green and blue dots in the
center of the screen (Vertical movement adjust S V.STAT RV1750 to
converge).

Center dot

RV1750

R

B

G

V.STAT

R
G
B

Horizontal Static Convergence

If the blue dot does not converge with the red and green dots, peform
the following:

1. Move BMC magnet (a) to correct insuffi cient H.Static convergence.

2. Rotate BMC magnet (b) to correct insuffi cient V.Static convergence.

3. After adjusting the BMC magnet, repeat Beam Landing Adjustment.

V. STAT

BMC MAGNET

PURITY

V.STAT magnet

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

When the V. STAT magnet is moved in the direction of arrow a and b,

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

1

a

b

2

a

a

b

B
G

R

b

b

B
G

R

a

RGB

b

BGR

b

BMC magnet

a

KV-21FK120

3

b

a

a

R

G

b

b

B

G

B

R

18

Dynamic Convergence Adjustment

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

1. Slightly loosen defl ection yoke screw.

2. Remove defl ection yoke spacers.

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

B R R B
(R)(B) (B)(R)

KV-21FK120

TLH+
TLH-

G

B

R

R

G

B

BGR

B

G

R

R

R

B

G

R

B

B

G

R

B

G

BGR

B

G

R

G

B

R

G

R

GB

4. Tighten the defl ection yoke screw.

5. Install the defl ection yoke spacers.

TLH Plate Adjustment

1. Input crosshatch pattern.

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

3 Adjust the Horizontal Convergence of red and blue dots by tilting the

TLH plate on the defl ection yoke.

4. Adjust XCV core to balance X axis.

5. Adjust YCH VR to balance Y axis.

6. Adjust vertical red and blue convergence with V.TILT (TLV VR.)
Note: Perform adjustment 3-6 while tracking items 1 and 2.

Screen-Corner Convergence

1. Affi x a permalloy assembly corresponding to the misconverged areas:

b

a

ba

a-d: screen-corner

misconvergence

c

d

c

d

2-3. FOCUS

1. Adjust FOCUS control for best pictures.

Focus (FV)

RV1750
V.STAT

CV
Board

KV-21FK120

TLH Plate

YCH

Screen (G2)

TLV

19

2-4. SCREEN (G2)

1. Input a dot pattern.

2. Set the PICTURE and BRIGHTNESS controls at minimum and
COLOR control at normal.

3. Adjust SBRT, GCUT, BCUT in service mode with an oscilloscope as
shown below so that voltages on the red, green, and blue cathodes
are 160 ± 2VDC.

±

160 – 2VDC

Ground

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

Pedestal

KV-21FK120

KV-21FK120

20

SECTION 3: SAFETY RELATED ADJUSTMENTS

KV-21FK120

3-1. X R565 CONFIRMATION METHOD

(HV HOLD-DOWN CONFIRMATION) AND
READJUSTMENTS

The following adjustments should always be performed when replacing
the following components which are marked with
diagram:

Part Replaced (Y) Adjustment (X)

DY, T585, CRT, IC001, IC561,
IC600, C506, C507, C508, T511,
L510, C588, L588, C566, C561,
C563, D567, D568, D566, PH602,
R567, R568, R565, R566, R562,

R563, R561, R528……....A Board

Y

on the schematic

HV HOLD-DOWN
R565

Preparation Before Confi rmation

1. Using a Variac, apply AC input voltage: 120 ± 2 VAC.

2. Turn the POWER switch ON.

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

4. Confi rm that the voltage between C566 (+) or TP30 and ground is
more than 97 VDC.

Hold-Down Readjustment

If the setting indicated in Step 2 of Hold-Down Operation Confi rmation
cannot be met, readjustment should be performed by altering the
resistance value of R565 component marked with

X

.

T585

FBT

Ammeter

3.0 mA DC
range

ABL

+

-

A

IABL

3-2. B+ VOLTAGE CONFIRMATION AND

ADJUSTMENT

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

A BOARD:

Y

IC600, PH602

Y

on the

Hold-Down Operation Confi rmation

1. Connect the current meter between Pin 11 of the FBT (T585) and the
PWB land where Pin 11 would normally attach (See Figure 1 on the
next page).

2. Input a dot signal and set PICTURE and BRIGHTNESS to minimum:
IABL = 100 ± 100µA.

3. Confi rm the voltage of A Board TP-23 is 135.6 ± 1VDC.

4. Connect the digital voltmeter and the DC power supply via Diode
1SS119 to C566 (+) and ground (See Figure 1 on next page).

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 < 117.0 VDC.

8. Input a white signal and set PICTURE and BRIGHTNESS to
maximum: IABL = 1350 ± 100µA.

9. Repeat steps 4 through 7.

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

2. Input a DOT pattern at Q.C.

3. Set the PICTURE and the BRIGHTNESS controls to minimum.

4. Confi rm the voltage of A Board between TP-23 & Ground is =135.6 ±
1VDC.

5. If step 4 is not satisfi ed, replace the components listed above, then
repeat steps 1 through 3.

KV-21FK120

21

(

)

FIGURE 1

KV-21FK120

DIGITAL
MULTIMETER

+

-

X

R565

R

5

3

1

0

4

S

P

R

5

1

1

J

R

1

R

4

3

7

0

6

R

C

4

5

1

C

5

2

D

5

6

6

5

2

R

5

8

9

T

2

P

4

2

9

L

3

7

0

1

5

6

C

1

5

T

8

2

R

5

3

2

L

3

7

1

1

1

5

C

R

2

1

5

C

1

1

5

L

1

3

1

5

L

C

5

0

2

B

T

2

P

5

R

5

0

4

R

5

3

3

C

5

4

0

5

S

5

6

5

C

I

C

5

3

0

6

2

5

D

5

2

5

L

5

1

0

6

2

5

C

1

5

C

4

1

5

C

2

H

5

Q

B

5

2

5

C

3

L

5

1

5

R

5

3

7

R

5

6

2

2

R

5

2

2

E

C

5

2

7

R

5

4

9

R

5

1

5

6

5

7

C

5

6

1

R

5

4

6

5

D

5

4

6

R

5

4

8

C

5

4

5

R

9

0

R

5

4

0

0

0

D

2

7

C

R

5

4

7

6

1

5

L

R

5

6

C

5

4

8

1

J

R

5

0

POWER
SUPPLY

+

­1SS119

C566

Q

4

0

2

R

4

0

8

R

4

1

1

.

H

P

O

R

T

R

5

P

T

3

0

6

6

5

D

R

5

2

9

C

5

6

2

C

5

2

9

1

6

5

C

I

C

5

4

4

2

C

5

9

7

1

T

P

V

.

O

U

T

5

4

7

5

4

5

C

I

4

1

C

5

9

5

P

T

7

1

R

9

0

1

5

1

2

C

2

2

8

D

5

2

8

D

6

1

5

8

3

R

2

8

5

C

P

T

3

3

Q

5

2

1

5

7

5

R

C

5

7

1

R

5

6

8

D

5

6

8

5

6

7

R

5

7

0

D

5

6

R

R

2

8

5

L

9

5

2

6

R

5

6

5

9

7

4

D

6

3

0

6

0

1

2

0

6

C

6

1

0

0

2

4

TP23

8

9

5

E

R

5

0

R

5

9

3

C

5

9

0

E

C

C

6

4

3

0

5

R

1

9

5

R

B

0

9

5

Q

R

5

9

4

T

P

1

3

4

2

6

C

P

3

T

2

1

6

8

0

4

2

6

D

4

5

0

5

C

-

H

O

Q

5

C

5

0

4

1

6

5

0

5

R

U

T

E

0

5

6

0

5

C

6

0

5

D

3

4

R

5

0

6

C

5

1

T

2

P

2

0

C

4

1

5

R

2

1

5

R

H

D

T

5

0

5

T

H

B

5

8

8

R

8

5

L

T

U

O

­6

0

5

Q

6

G

2

0

0

V

8

N

/

C

V

D

Y

+

P

T

2

1

V

D

Y

-

T

2

P

7

H

D

Y

-

P

T

2

8

H

D

Y

-

H

D

Y

+

T

P

H

D

Y

+

3

1

H

-

O

2

9

1

5

5

N

C

D

R

5

9

8

T

1

P

9

H

E

A

T

E

R

N

D

5

V

U

T

-

1

3

V

G

N

D

G

N

D

G

N

D

5

5

8

T

+

1

3

V

N

/

C

F

B

T

A

B

L

T

2

P

0

R

5

8

1

AMMETER
3mA dc range

A

+

-

KV-21FK120

22

SECTION 4: CIRCUIT ADJUSTMENTS

Electrical Adjustments by Remote Commander

Use the Remote Commander (RM-Y194) to perform the circuit adjustments in this section.

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

KV-21FK120

4-1. REMOTE ADJUSTMENT BUTTONS AND

INDICATORS

DISPLAY

(Service Mode)

MUTING

(Enter into
memory)

1

(Display)
Item up

2
(Display)
Category up

4
(Display)
Item down

8

(Initialize)

VOLUME (+)

(Service Mode)

POWER

(Service Mode)

3

(Adjust)
Data up

6

(Adjust)
Data down

5

(Display)
Category
down

ENT

(Enter into
memory)

0

(Remove
from
memory)

4-2. ACCESSING SERVICE ADJUSTMENT

MODE

Service Mode Procedure

1. Standby mode (power off).

2. Press

NOTE: Setting the set in VIDEO mode will make it easier to read the

DISPLAY

POWER

second).

service data.

Channel 5 Sound Volume +

on the Remote Commander (press each button within a

Service Adjustment Mode On

The CRT displays the fi rst Category in the Service list.

Category

Display

Item

Display

Data

1. On the Remote Commander, press 2 or 5 to select the Category.

2. Press 1 or 4 to select the Item.

3. Press 3 or 6 to change the Data.

4. Press

MUTING

HSIZ 1 : 51 NVM:OK

M655E2AMF-107FP

then

Signal
Type

NTSC VIDEO1DEF

ENT

to write into the memory.

Channel
Type

S 3.OD

KV-21FK120

RM-Y194

Display

Item

Display

Data

Category

HSIZ 1 : 51

M655E2AMF-107FP

Signal
Type

NTSC WRITEDEF

Channel
Type

Text changes
to “WRITE”
and changes
from green to red

S 3.OD

23

KV-21FK120

Service Adjustment Mode Memory

Signal
Type

NTSC VIDEO1DEF

Display

Item

Display

Data

Category

HSIZ 1 : 51 NVM:OK

M655E2AMF-107FP

Carry out Step 1 when adjusting IDs 0-6 and when replacing and
adjusting IC002.

1. In Service Mode, press 8 then

ENT

on the Remote Commander to

re-initialize.

Display

Item

Display

Data

Category

HSIZ 1 : 51

M655E2AMF-107FP

Signal
Type

NTSC RESETDEF

Channel
Type

S 3.OD

Channel
Type

S 3.OD

Text changes
to “RESET”
and changes
from green to red

4-3. WHITE BALANCE ADJUSTMENTS

1. Input an entire white signal with burst.

2. Access Service Adjustment Mode.

3. Set the PICTURE and BRIGHTNESS to minimum.

4. Adjust with SBRT if necessary.

5. Press 2 or 5 to select the VP1 Category

6. Press 1 or 4 to select GCUT and BCUT.

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

8. Set the PICTURE and BRIGHTNESS to maximum.

9. Press 1 or 4 to select GDRV and BDRV.

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

11. Press

MUTING

then

ENT

to write into the memory.

4-4. 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 confi rm they were adjusted.

2. The set automatically turns off after re-initializing is complete.

KV-21FK120

24

4-5. SERVICE DATA LIST

K

K

K

K

K

K

KV-21FK120

Service

Group

DEF

No. Name

1H-SIZE HSIZ
2 H-AFC-2 phase HPOS
3 VSIZE VSIZ
4 VPOSI VPOS
5LINI VLIN
6 S CORRECTION SCOR
7BOW VBOW
8 ANGLE VANG

9 TRAPESIUM TRAP
10 PARABOLA PAMP
11 UPPER CORNER UPIN
12 LOWER CORNER LPIN
13 (TROT) TROT
14 FBPBL
15 HBLK R POS RBL
16 HBLK F POS LBL
17 VBLK POS VBL
18 Macro OFF HMS
19 HOUT DUTY HDW
20 H AFC Gain AFC
21 H Charge pump AFC1
22 AFC1 PULLIN AFCW
23 V CD MODE CDMD
24 SYNC SLICE LVL(H) HSS
25 SYNC SLICE LVL(L) VSS
26 AUTO SLICE DOWN SLDN
27 AUTO SLICE UP SLUP
28 VJPSW JPSW
29 HVCO FREERUN OFFSET HOSC
30 EHT EHT
31 EHT GAIN EHTG

OSD Description

HBL

H SIZE(EW DC) : YUV OFFSET
H POSITION : YUV OFFSET
V RAMP SIZE : YUV OFFSET
V POSITION(RAMP DC) not useful : YUV OFFSET
V LINEARITY
S CORRECTION
BOW
ANGLE
EW TRAPESIUM
EW PIN
UPPER PIN
LOWER PIN
TROT
H BLK mode select
HBLK rear timing : YUV OFFSET
HBLK front timing : YUV OFFSET
V BLK width
TOP VEND(when MACROVISION) prevent OFF
H PULSE WIDTH(25u/19u)
AFC GAIN
AFC1 TIME CONSTANT
AFC1 PULL IN WIDE
V DET WINDOW SW TIMING
SYNC SLICE LEVEL(H sepa)
SYNC SLICE LEVEL(V sepa)
Auto Slice level DOWN
Auto Slice level UP
Jump SW
H VCO fo offset ADJUST OFFSET
EHT
EHT MODE

Initial Data

(DEC)

41
31
31
35
28
45
36
44
29
47
31
29

109

00
09
35
00
00
01
00
03
00
01
00
03
00
00
00
07
04
01

KV-21FK120

25

KV-21FK120

Service

Group

16:09VP1

No. Name OSD

1 VSIZE VSIZ
2 VPOSI VPOS
3LINI VLIN
4 S CORRECTION SCOR
5 TRAPESIUM TRAP
6 PARABOLA PAMP
7 UPPER CORNER UPIN
8 LOWER CORNER LPIN

9 ABL GAIN ABLG
10 CONT SCON
11 VJP WIDTH VPW

1 Drive R RDRV

2 Drive G GDRV

3 Drive B BDRV

4 R CMP H/L RCUT

5 G CMP H/L GCUT

6 B CMP H/L BCUT

7CONT SCON

8 TINT SHUE

9 COLOR SCOL
10 BRIGHT SBRT
11 R Output Mute RON
12 G Output Mute GON
13 B Output Mute BON

14 BLUE STRETCH BLLV
15 RGB MTX MTRX
16 RRAY AXIS
17 SHARP OVER SSHO
18 SHARP PRE SSHP
19 APERTURE FREQUENCY SHPF
20 SHARP NOISE CORING LV SHCL
21 SHARPNESS MAX GAIN SHMX
22 ACL G ACLV
23 AKBD AKBD
24 AKB SW AKBS
25 AKB REFPLS POS REFP
26 YNR NOISE CORING LV YNRC
27 BLACK STRETCH SW BKON
28 BLACK STRETCH TIME1 BKAT
29 BLACK STRETCH TIME2 BKRC
30 BLACK STRETCH DEPTH BKDP
31 BLKSTPNT BKSP

Description

V RAMP SIZE
V POSITION(RAMP DC)
V LINEARITY
S CORRECTION
EW TRAPESIUM
EW PIN
UPPER PIN
LOWER PIN
ABL GAIN
SUB CONTRAST LEVEL
Jump Pulse Width

R DRIVE
G DRIVE : GDOF offset (only Color Temp. "Warm")
B DRIVE : BDOF offset (only Color Temp. "Warm")
Hardware AKB(R) CMP DATA
Hardware AKB(G) CMP DATA :
GCOF offset (only Color Temp. "Warm")

Hardware AKB(B) CMP DATA :
BCOF offset (only Color Temp. "Warm")
SUB CONTRAST LEVEL
SUB TINT(HUE) YUV/notYUV
SUB COLOR LEVEL YUV/notYUV
SUB BRIGHTNESS YUV/notYUV
R OUTPUT ON ( 0:R Output OFF 1:R Output ON )
G OUTPUT ON ( 0:G Output OFF 1:G Output ON )
B OUTPUT ON ( 0:B Output OFF 1:B Output ON )

BLUE STRETCH(00:no <-> 11:deep)
only Color Temp. "Cool"
MATRIX RATIO SELECT
R-Y PHASE OFFSET
SUB SHARPNESS GAIN(OVER) RF/VIDEO/YUV
SUB SHARPNESS GAIN(PRE) RF/VIDEO/YUV
SHRPNESS fo(00:2 CLK <-> 11:5 CLK) RF/VIDEO/YUV
SHARPNESS CORING LEVEL
SHARPNESS LIMITTER LEVEL
ACL GAIN
AKB Self Diagnostic Counter(@1sec)
AKB Switch ( 0 : AKB OFF 1 : H/W AKB ON )
AKB REFPLS timing
YNR LIMITER LEVEL
BLACK STRETCH ON
BLACK STRETCH DETECTOR TIME CONSTANT1
BLACK STRETCH DETECTOR TIME CONSTANT2
BLACK STRETCH START POINT
BLACK STRETCH POINT RF/notRF

Initial Data

(DEC)

55
37
37

9
30
25
32
31
15
10
00

64/64
45/47
59/62

120/120

68/67

51/49

23

10/10
16/16
16/16

01
01
01

01
00
52

10/25/25
15/30/30
01/00/00

00
15
00
02
01
00
15
01
15
04
03

02/02

KV-21FK120

26

KV-21FK120

Service

Group

VP2NR

No. Name OSD Description

1 VM GAIN(Off) VMOF
2 VM GAIN(Low) VMLO
3 VM GAIN(High) VMHI
4VM DELAY VMDL
5 VM POL VMPL
6VM WIDTH VMWD
7 VM CORING LEVEL VMCL
8 VM MAX VMMX

9 KILLER LEVEL CKLV
10 FORCE KILLER CKON
11 ALFA ALFA

12 MANEXP YCMD
13 V APERTURE CORING LV VACL
14 V APERTURE GAIN VAGA
15 V APERTURE MAX GAIN VAMX
16 GAMMA GAMM
17 Y DELAY YDLY
18 C DELAY CDLY
19 Y Mute YOFF
20 SAW FILTER(7.2MHzBPF) CBPF
21 BGP POS BGPP
22 G DRIVE OFFSET GDOF
23 B DRIVE OFFSET BDOF
24 GCUT OFFSET GCOF
25 BCUT OFFSET BCOF
26 DCTRAN VTH<6:0> DCTV
27 DCTRAN GAIN<4:0> DCTG

VM LEVEL at "Off" Setting
VM LEVEL at "Low" Setting
VM LEVEL at "High" Setting
VM DELAY
VM PORALITY
VM WIDTH
VM CORING LEVEL
VM LIMITER LEVEL
COLOR KILLER VTH YUV/notYUV
FORCE KILLER
ADAPTIVE DET SENSITIVITY
YC SEPA FORCE SELECT
(00:ADAPTIVE 01:H 10:V 11:HV)
V APERTURE CORING LEVEL
V APERTURE GAIN LEVEL
V APERTURE LIMITER LEVEL
GAMMA(00:no <-->11:deep)
Y DELAY TIME YUV/notYUV
C DELAY
Y OUTPUT MUTE
C BPF fo HI
BGP(for C DECODER)TIMING YUV/notYUV
G DRIVE OFFSET only Color Temp. "Warm"
B DRIVE OFFSET only Color Temp. "Warm"
GCUT CMP DATA OFFSET only Color Temp. "Warm"
BCUT CMP DATA OFFSET only Color Temp. "Warm"
DCTRANSFER VTH
DCTRANSFER GAIN

Initial Data

(DEC)

02
04
08
06
00
00
00
15

01/00

00
02

00
00
05
05
01

01/03

00
00
00

09/28

09
14
11
28
30
15

KV-21FK120

1 COLOR SCOL

2 SHARP NOISE CORING LV SHCL

3 SHARPNESS MAX GAIN SHMX

4 YNR NOISE CORING LV YNRC

5 VM GAIN(High) VMHI

6 VM CORING LEVEL VMCL

7 VM MAX VMMX

8 V APERTURE MAX GAIN VAMX

9 GAMMA GAMM
10 YNR SW YNRS
11 WEAK_SIG_VTH WSTH
12 WEAK SIG VIDEO ATT WSVA
13 WEAK SIG CHROMA ATT WSCA

14 THRNZV1 NRCH
15 THRNZV2 NRCL
16 THRNZH1 NRVL
17 THRNZH2 NRVH
18 NR COUNTER IPNC
19 NR Vsync Counter IPNV

SUB COLOR LEVEL
SHARPNESS CORING LEVEL
SHARPNESS LIMITTER LEVEL
YNR LIMITER LEVEL
VM LEVEL at "High" Setting
VM CORING LEVEL
VM LIMITER LEVEL
V APERTURE LIMITER LEVEL
GAMMA(00:no <-->11:deep)
YNR ON
WEAK_SIGNAL VTH
WEAK SIGNAL VIDEO ATT
WEAK SIGNAL CHROMA ATT
NOISE DET TIME CONSTANT
NOISE DET TIME CONSTANT
NOISE DET VTH
NOISE DET VTH
Intelligent Picture "DETNZ" Counter
Intelligent Picture "DETNZ" Counter

16
15
07
07
10
00
07
00
00

01
07
00
05

00
16
02
00
02
10

27

Use the Remote Commander to select the PICTURE MODE (Vivid, Standard, Movie, or Pro) you want to adjust.

KV-21FK120

Service

Group

PALLET for VIVIDPALLET for STDPALLET for MOVIE

Service

Group

No.

1 PICTURE VPIC
2 BRIGHTNESS VBRI
3 COLOR VCOL
4 HUE VHUE
5 SHARPNESS VSHA
6 VM VVM
7 COLOR TEMP VTRI
8 APERTURE G VAPA
9 GAMMA VGMA

10 DCT LV VDCT

11 BLACK STRETCH DEPTH VBKP

12 BLACK STRETCH DEPTH TBKD

Name OSD Description

Picture(VIVID)
Brightness(VIVID)
Color(VIVID)
Hue(VIVID)
Sharpness(VIVID)
VM(VIVID)
Color Temp(VIVID)
Aperture G(VIVID)
Gamma(VIVID)
DCT LV(VIVID)

BLACK STRETCH DEPTH(VIVID) for VIDEO INPUT
BLACK STRETCH DEPTH(VIVID) for TUNER INPUT

No. Name OSD Description

1 PICTURE VPIC
2 BRIGHTNESS VBRI
3 COLOR VCOL
4HUE VHUE
5 SHARPNESS VSHA
6 VM VVM
7 COLOR TEMP VTRI
8 APERTURE G VAPA
9 GAMMA VGMA

10 DCT LV VDCT
11 BLACK STRETCH DEPTH VBKP

12 BLACK STRETCH DEPTH TBKD

Picture(STANDARD)
Brightness(STANDARD)
Color(STANDARD)
Hue(STANDARD)
Sharpness(STANDARD)
VM(STANDARD)
Color Temp(STANDARD)
Aperture G(STANDARD)
Gamma(STANDARD)
DCT LV(STANDARD)

BLACK STRETCH DEPTH(STD) for VIDEO INPUT
BLACK STRETCH DEPTH(STD) for TUNER INPUT

Initial Data

(DEC)

63
27
37
31
31
02
00
05
03
23

03
03

Initial Data

(DEC)

50
30
32
31
32
01
01
05
01
15

03
03

Service

Group

KV-21FK120

No. Name

OSD Description

1 PICTURE VPIC
2 BRIGHTNESS VBRI
3 COLOR VCOL
4 HUE VHUE
5 SHARPNESS VSHA
6 VM VVM
7 COLOR TEMP VTRI
8 APERTURE G VAPA
9 GAMMA VGMA

10 DCT LV VDCT
11 BLACK STRETCH DEPTH VBKP

12 BLACK STRETCH DEPTH TBKD

Picture(MOVIE)
Brightness(MOVIE)
Color(MOVIE)
Hue(MOVIE)
Sharpness(MOVIE)
VM(MOVIE)
Color Temp(MOVIE)
Aperture G(MOVIE)
Gamma(MOVIE)
DCT LV(MOVIE)

BLACK STRETCH DEPTH(MOVIE) for VIDEO INPUT
BLACK STRETCH DEPTH(MOVIE) for TUNER INPUT

Initial Data

(DEC)

37
31
31
31
31
00
02
03
00
02

04
04

28

KV-21FK120

K

Service

Group

PALLET for PROYC

Service

Group

No. Name OSD Description

1 PICTURE VPIC
2 BRIGHTNESS VBRI
3 COLOR VCOL
4 HUE VHUE
5 SHARPNESS VSHA
6 VM VVM
7 COLOR TEMP VTRI
8 APERTURE G VAPA
9 GAMMA VGMA

10 DCT LV VDCT

11 BLACK STRETCH DEPTH VBKP

12 BLACK STRETCH DEPTH TBKD

No. Name OSD

1 YNR SW YNRS
2 Y THR 2D YTHR
3 Y 2D Fix Y2D
4 C BPF Fix 2DFX

5 CLAMP CONTROL CLPS
6 VIDEO LPF VLPF
7 CHROMA LPF CLPF
8 YCS HBPF BAC

9 YCS HBPF FRONT BPFF
10 BS T2 IFON BKTS
11 VMGAIN2 VMG2
12 CLAMP KEEP TIMER CLPT

BPFB

Picture(PRO)
Brightness(PRO)
Color(PRO)
Hue(PRO)
Sharpness(PRO)
VM(PRO)
Color Temp(PRO)
Aperture G(PRO)
Gamma(PRO)
DCT LV(PRO)

BLACK STRETCH DEPTH(PRO) for VIDEO INPUT
BLACK STRETCH DEPTH(PRO) for TUNER INPUT

Description

YNR ON
Y SIGNAL THROUGH 2DYCS
Y SIGNAL GENERATE from 2DYCS
C SIGNAL GENELATE from H/V BPF only
CLAMP CONTROL SW
( 0:CLAMP OFF 1:CLAMP AUTO 2:CLAMP ON )
Y_LPF(ANALOG) fo Ajust
C_LPF(ANALOG) fo Ajust
YCS HBPF SELECT(BACK)
YCS HBPF SELECT(FRONT)
BLACK STRETCH RECOVER TIME COUNT
MODULATOR FEEDBACK GAIN CONTROL
CLAMP AUTO ON KEEP TIMER COUNT (@100ms)

Initial Data

(DEC)

31
31
31
31
21
00
01
00
00
02

07
07

Initial Data

(DEC)

00
00
00
01

01
03
03
01
01
00
02
15

Service

Group

KV-21FK120

No. Name OSD Description

1 AMP OFF1 L A1FL
2AMP ON A1ON
3 ACC SW ACCS
4 AVE SEL AASL
5 B2AVE SEL BASL
6 FREE RUN XFFR
7 AMP2 ON Thresh A2ON
8 AMP3 ON Thresh A3ON

9 AMP2 OFF Thresh L A2FL
10 AMP3 OFF Thresh L A3FL
11 AXIS HYS AXTH
12 ROM HYS ACTH
13 AVE SEL AV AVAV
14 B2COMP B2TH
15 ACC COMP ACCP

ANALOG ACC hysteresis
ANALOG ACC AMP ON LEVEL
ACC ON/OFF
C DECODER TIME CONSTANT(32,16,8,1H)
ACC TIME CONSTANT
VCXO FORCE FREERUN
ABL VTH
ACL VTH
AMP2 OFF LEVEL lower
AMP3 OFF LEVEL lower
AXS HYS
ROM HYS
AVE SEL AV
B2COMP
ACC COMP

Initial Data

(DEC)

90
04

00/01

02
00

00/01

04
04
64
64
30
10
03
00
00

29

KV-21FK120

Service

Group

RGB

No. Name OSD Description

1 RGB POWER ON MUTE AMUT
2 RGB Mute before OSD PMUT
3 Cutoff R L CORL
4 Cutoff R H CORH

5 Cutoff G L COGL

6 Cutoff G H COGH

7 Cutoff B L COBL

8 Cutoff B H COBH

9 ABL SEL ABLS
10 ACL SPEED ALSP
11 ACL SPE ALRS
12 ACL ASPE ALAS
13 ABL GAIN ABLG
14 ACLASPE2 ALS2
15 AKB MODE AKBM
16 AKB P[5:0] AKBP
17 OSD LIMIT OSDL
18 Y/U/V UVINV UVIN
19 U/V GAIN UVG
20 U IN OFFSET UOFS
21 V IN OFFSET VOFS
22 ANA ACL GAIN AALG
23 ANA ACL ON AALS
24 UV_DITHER_EN UVDE
25 UV_DITHER_TEST UVDT

RGB POWER ON MUTE
RGB MUTE(EXCEPT OSD)
R CUTOFF lower
R CUTOFF upper

G CUTOFF lower when Color Temp. is
"Cool" and "Neutral"

G CUTOFF upper when Color Temp. is
"Cool" and "Neutral"

B CUTOFF lower when Color Temp. is
"Cool" and "Neutral"

B CUTOFF upper when Color Temp. is
"Cool" and "Neutral"

ABL SELECT
ACL SPEED
ACL RECOVER SPEED
ACL ATACK SPEED
ABL GAIN
ACL ATACK SPEED(2)
AKB MODE
AKB PULSE HEIGHT
OSD LIMMIT SELECT
U/V INVERT
UV OFFSET CANCELER ON
U IN OFFSET
V IN OFFSET
ANALOG ACL GAIN CONTROL
ANALOG ACL ON/OFF CONTROL
UVIN DITHER ENABLE
UVIN DITHER TEST

Initial Data

(DEC)

00
01

212

00

197

00

176

00
00
00
02
09
05
02
00
16
00
00
00
07
07
00

01
00/01
00/06

KV-21FK120

30