SONY KV-20FS120, KV-21FM120, KV-21FS120, KV-21FA310, KV-24FS120 Service Manual

...
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
SERVICE MANUAL
MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.
KV-20FS120 KV-20FS120 KV-21FM120 KV-21FS120 KV-21FS120 KV-21FA310 KV-21FA310 KV-24FS120 KV-24FS120
RM-Y194 US SCC- S61K-A
RM-Y194 CND SCC- S59H-A
RM-W151 LATIN NORTH SCC- S60X-A
RM-Y194 LATIN NORTH SCC- S60Y-A
RM-Y194 LATIN SOUTH SCC- S73A-A
RM-Y180 LATIN NORTH SCC- S60T-A
RM-Y180 LATIN SOUTH SCC- S60U-A
RM-Y194 US SCC- S61L-A
RM-Y194 CND SCC- S59J-A
BA-6
CHASSIS
KV-25FS120 KV-25FS120
RM-Y194 LATIN NORTH SCC- S73B-A
RM-Y194 LATIN SOUTH SCC- S73C-A
ORIGINAL MANUAL ISSUE DATE: 3/2004
:UPDATED ITEM
REVISION DATE SUBJECT
3/2004 No revisions or updates are applicable at this time. 4/2004 Corrected HV Hold-Down PN Replaced Page 17 and Page 37 Removed critical mark on SPACER, DY Replaced Page 52, Page 54 and Page 56 Corrected screw placement for Speaker Assy Replaced Page 56 Added Remote Control Battery Cover PNs for RM-Y194 and RM-W151 Replaced Page 80 3/2005 Corrected Remote Control Battery Cover PN for RM-Y194 Replaced Page 80 7/2005 Updated A Board Schematic to correct Y signal. Replaced Page 39
TRINITRON® COLOR TELEVISION
Self Diagnosis
Supported model
SERVICE MANUAL
MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.
KV-20FS120 KV-20FS120 KV-21FM120 KV-21FS120 KV-21FS120 KV-21FA310 KV-21FA310 KV-24FS120 KV-24FS120
RM-Y194 US SCC- S61K-A
RM-Y194 CND SCC- S59H-A
RM-W151 LATIN NORTH SCC- S60X-A
RM-Y194 LATIN NORTH SCC- S60Y-A
RM-Y194 LATIN SOUTH SCC- S73A-A
RM-Y180 LATIN NORTH SCC- S60T-A
RM-Y180 LATIN SOUTH SCC- S60U-A
RM-Y194 US SCC- S61L-A
RM-Y194 CND SCC- S59J-A
BA-6
CHASSIS
KV-25FS120 KV-25FS120
KV-24FS120 KV-21FA310
RM-Y194 LATIN NORTH SCC- S73B-A
RM-Y194 LATIN SOUTH SCC- S73C-A
TRINITRON® COLOR TELEVISION
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120

TABLE OF CONTENTS

SECTION TITLE PAG E
Specifi cations ............................................................................................................................................................................. 4
Warnings and Cautions .............................................................................................................................................................. 6
Safety Check-Out ....................................................................................................................................................................... 7
Self-Diagnostic Function............................................................................................................................................................. 8
SECTION 1: DISASSEMBLY........................................................................................................................................................... 10
1-1. Rear Cover Removal (All Except KV-21FA310)............................................................................................................... 10
1-2. Rear Cover Removal (KV-21FA310 Only)........................................................................................................................ 10
1-3. Chassis Assembly Removal ..............................................................................................................................................11
1-4. Service Position ................................................................................................................................................................11
1-5. Picture Tube Removal ...................................................................................................................................................... 12
Anode Cap Removal Procedure....................................................................................................................................... 12
SECTION 2: SET-UP ADJUSTMENTS............................................................................................................................................ 13
2-1. Beam Landing .................................................................................................................................................................. 13
2-2. Convergence.................................................................................................................................................................... 14
2-3. Focus ............................................................................................................................................................................... 15
2-4. Screen (G2)...................................................................................................................................................................... 16
2-5. Method of Setting the Service Adjustment Mode ............................................................................................................. 16
2-6. White Balance Adjustments ............................................................................................................................................. 16
SECTION 3: SAFETY RELATED ADJUSTMENTS......................................................................................................................... 17
3-1.
X
R565 Confi rmation Method (HV Hold-Down Confi rmation) and Readjustments ........................................................ 17
3-2. B+ Voltage Confi rmation and Adjustment ........................................................................................................................ 17
SECTION 4: CIRCUIT ADJUSTMENTS.......................................................................................................................................... 19
4-1. Setting the Service Adjustment Mode .............................................................................................................................. 19
4-2. Memory Write Confi rmation Method ................................................................................................................................ 19
4-3. Remote Adjustment Buttons and Indicators ..................................................................................................................... 19
4-4. Service Data Lists ............................................................................................................................................................ 20
4-5. ID Map Table .................................................................................................................................................................... 34
4-6. 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
HB Board Schematic Diagram (All Except KV-21FA310)................................................................................................ 41
HR Board Schematic Diagram (KV-21FA310 Only) ........................................................................................................ 44
CV Board Schematic Diagram ......................................................................................................................................... 45
K Board Schematic Diagram (KV-21FA310 Only) ............................................................................................................ 49
5-4. Semiconductors ............................................................................................................................................................... 51
SECTION 6: EXPLODED VIEWS.................................................................................................................................................... 52
6-1. Picture Tube (KV-20FS120/21FS120 Only) ..................................................................................................................... 52
6-2. Chassis (KV-20FS120/21FS120 Only)............................................................................................................................. 53
6-3. Picture Tube (KV-21FM120 Only) .................................................................................................................................... 54
6-4. Chassis (KV-21FM120 Only)............................................................................................................................................ 55
6-5. Picture Tube (KV-21FA310 Only) ..................................................................................................................................... 56
6-6. Chassis (KV-21FA310 Only) ............................................................................................................................................ 57
6-7. Picture Tube (KV-24FS120/25FS120 Only) ..................................................................................................................... 58
6-8. Chassis (KV-24FS120/25FS120 Only)............................................................................................................................. 59
SECTION 7: ELECTRICAL PARTS LIST....................................................................................................................................... 60
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
3
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
R
p
)
p
R
p
)
p

SPECIFICATIONS

KV-20FS120 KV-21FM120 KV-21FS120 (N) KV-21FS120 (S)
Power Requirements 120V, 60Hz 120V, 60Hz 120V, 60Hz 220V, 50/60Hz Number of Inputs/Outputs
eaker Output(W
S
Power Consumption (W)
In Standby (Max)
Dimensions (W x H x D)
Mass
S Video Y,P
Audio Out
Head
In Use (Max) 140W 125W 140W 135W
Video
, P
B
Audio
1)
2)
3)
4)
5)
2222 0000 1011 4244 0000
10W x 2 5W x 2 10W x 2 10W x 2
hones
6)
mm 631 x 468 x 490.5 mm 631 x 468 x 490.5 mm 631 x 468 x 490.5 mm 631 x 468 x 490.5 mm
24
in
1111
1W 1W 1W 1W
7/8
x 18 3/8 x 19
1/4
in 24
7/8
x 18 3/8 x 19
1/4
in 24
7/8
x 18 3/8 x 19
1/4
in 24
7/8
x 18 3/8 x 19
kg 25.2 kg 25.2 kg 25.2 kg 25.2 kg
lbs 55 lbs 9 oz 55 lbs 9 oz 55 lbs 9 oz 55 lbs 9 oz
1/4
in
KV-21FA310 (N) KV-21FA310 (S)
KV-24FS120
KV-25FS10 (N)
KV-25FS120 (S)
Power Requirements 120V, 60Hz 220V, 50/60Hz 120V, 60Hz 220V, 50/60Hz Number of Inputs/Outputs
eaker Output(W
S
S Video Y,P
Audio Out
Subwoofer
Head
Video
, P
B
Audio
hones
1)
2)
3)
4)
5)
2222 1111 1111 4444 1111
5W x 3 5W x 3 10W x 2 10W x 2
15W 15W NA NA
1111
Power Consumption (W)
In Use (Max) 155W 150W 165W 160W
In Standby (Max)
6)
1W 1W 1W 1W
Dimensions (W x H x D)
mm 609 x 540 x 503 mm 609 x 540 x 503 mm 718 x 526.5 x 480 mm 718 x 526.5 x 480 mm
in
24 x 21
1/4
3/4
x 19
in 24 x 21
1/4
x 19
3/4
in 28
1/4
x 20
3/4
x 18
7/8
in 28
1/4
x 20
3/4
x 18
Mass
kg 28.6 kg 28.6 kg 32.8 kg 32.8 kg
lbs 63 lbs 63 lbs 72 lbs 5 oz 72 lbs 5 oz
1) 1 Vp-p 75 ohms unbalanced, sync negative
2) Y: 1 Vp-p 75 ohms unbalanced, sync negative
C: 0.286 Vp-p (Burst signal), 75 ohms
3) Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative;
PB: 0.7 Vp-p, 75 ohms
PR: 0.7 Vp-p, 75 ohms
4) 500 mVrms (100% modulation), Impedance: 47 kilohms
5) More than 408 mVrms at the maximum volume setting (variable)
More than 408 mVrms (fi x); Impedance (output): 2 kilohms
6) This specifi cation is maximum wattage.
7/8
in
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
4
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
Television system
American TV standard, NTSC
Channel coverage
VHF: 2-13/ UHF: 14-69/ CATV: 1-125
Picture tube
FD Trinitron® tube
Visible screen size
20-inch picture measured diagonally
(KV-20FS120/21FM120/21FS120/21FA310 Only)
24-inch picture measured diagonally
(KV-24FS120/25FS120 Only)
Actual screen size
21-inch measured diagonally
(KV-20FS120/21FM120/21FS120/21FA310 Only)
25-inch measured diagonally
(KV-24FS120/25FS120 Only)
Antenna
75 ohm external terminal for VHF/UHF
Supplied Accessories
Remote Commander RM-Y194
(KV-20FS120/21FS120/24FS120/25FS120 Only) Remote Commander RM-W151 (KV-21FM120 Only) Remote Commander RM-Y180
(KV-21FA310 Only) Two Size AA (R6) Batteries Antenna, Telescopic
(KV-21FM120/21FS120/21FA310/25FS120 Only)
© 2004 Dolby Laboratories, Inc. Dolby, Pro Logic, and the double-D symbol are registered trademarks of Dolby Laboratories.
TruSurround
TruSurround is a trademark of SRS Labs, Inc. SRS and the SRS symbol are registered trademarks of SRS Labs, Inc. in the United States and in select foreign countries. SRS and TruSurround are incorporated under license from SRS Labs, Inc. and are protected under United States Patent Nos. 4,748,669 and 4,841,572 with numerous additional issued and pending foreign patents. Pur­chase of this product does not convey the right to sell recordings made with the TruSurround technology.
by SRS
®
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.
Design and specifi cations are subject to change without notice.
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
5
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120

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.
ATTENTION!!
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 la couche de carbone peinte sur le tube cathodique ou au blindage du tube cathodique.
Afi n d’eviter tout risque 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 du secteur.
! ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
Les composants identifi es par une trame et par une marque ! sur les schemas de principe, les vues explosees et les listes de pieces sont d’une importance critique pour la securite du fonctionnement. Ne les remplacer que par des composants Sony dont le numero de piece est indique dans le present manuel ou dans des supplements publies par Sony. Les reglages de circuit dont l’importance est critique pour la securite du fonctionnement sont identifi es dans le present manuel. Suivre ces procedures lors de chaque remplacement de composants critiques, ou lorsqu’un mauvais fonctionnement suspecte.
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
6

SAFETY CHECK-OUT

KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
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).
To Exposed Metal
Parts on Set
0.15 F
1.5 K
AC
Voltmeter
(0.75 V)
Earth Ground
Figure A. Using an AC voltmeter to check AC leakage. Figure B. Checking for earth ground.
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
Trouble Light
AC Outlet Box
Ohmmeter
Cold-water Pipe
7
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120

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
Description
Power does not turn on
+B overcurrent (OCP)*
STANDBY/ TIMER
No. of times
lamp fl ashes
Does not light
2 times
Self-Diagnositc
Display/
Diagnostic Result
2:0 or 2:1
Probable Cause Location
• Power cord is not plugged in.
• Fuse is burned out (F601). (A Board)
• H.OUT (Q506) is shorted. (A Board) (20”/21” models only) H.OUT (Q505) is shorted. (A Board) (24”/25” models only)
• RGB Amp (IC1751) is shorted. (CV Board)
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.
I-Prot
IK (AKB)
4 times
5 times
4:0 or 4:1
5:0 or 5:1
• +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.**
• 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-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
8
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
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
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
8
ENTER
5
Sound Volume
Numeral “0” means that no fault was detected.
Numeral “1” means a fault was detected one time only.
-
Power ON
Note that this differs from entering the Service Mode (Sound Volume
+
).
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-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
9

SECTION 1: DISASSEMBLY

1-1. REAR COVER REMOVAL (ALL EXCEPT KV-21FA310)

Rear Cover
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
3 screw +BVTP 3 x 12 (KV-20FS120/21FS120 Only) 1 Screw +BVTP 4X16 (KV-21FM120 Only) 3 screw +BVTP 3 x 10 (KV-24FS120/25FS120 Only)

1-2. REAR COVER REMOVAL (KV-21FA310 ONLY)

Sub Woofer
1
Lift to remove Sub-woofer.
2
Remove screws.
7 Screws +BVTP 4X16 (KV-20FS120/21FM120/21FS120 Only) 6 Screws +BVTP 4X16 (KV-24FS120/25FS120 Only)
Rear Cover
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
4 screw +BVTP 3 x 10
7 Screws +BVTP 4X16
10

1-3. CHASSIS ASSEMBLY REMOVAL

KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
Claw

1-4. SERVICE POSITION

1
Push down on clips to release K Board, then unplug the 2 pin woofer connector and move out of the way.
2
Press on catch tab to release A Board.
Disconnect remaining cables to allow A Board to be removed.
3
Chassis Assembly
A Board
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
CV Board
11
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120

1-5. 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
9
6
2
5
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
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].
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-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
12
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120

SECTION 2: SET-UP ADJUSTMENTS

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. Degauss the entire screen.
2. 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-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
Purity control
corrects this area.
Disk magnets or rotatable disk magnets correct
these areas (a-d).
Deflection yoke positioning
b
d
a
b
cd
corrects these areas.
a
c
13
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120

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
3
b
a
a
R
G
b
b
B
G
B
R
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
14
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:
G
B
R
R
G
B
BGR
B
G
R
R
B
G
R
B
G
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
B R R B (R)(B) (B)(R)
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.
TLH+ TLH-
Screen-Corner Convergence
BGR
B
G
R
B
G
R
B
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.
RV1750
V.STAT
TLH Plate
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)
Screen (G2)
CV Board
TLV
(TLV)
(YHC, TLV) 20"/21" Models
(TLV, XCV, YCH, TLV) 24"/25" Models
XCV
YCH
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
15
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120

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
Pedestal
Ground
4. Observe the screen and adjust SCREEN (G2) VR in FBT to obtain the faintly visible background of dot signal.
2-5. METHOD OF SETTING THE SERVICE
ADJUSTMENT MODE
Service Mode Procedure
1. Standby mode (power off).
2. Press
Display
Channel
Sound Volume
5
on the Remote Commander (press each button within a second).
Power
+

2-6. WHITE BALANCE ADJUSTMENTS

1. Input an entire white signal with burst.
2. Set to Service Adjustment Mode.
3. Set the PICTURE and BRIGHTNESS to minimum.
4. Adjust with SBRT if necessary.
ENTER
1
and 4 .
1
and 4.
to save into the memory.
5. Select GCUT and BCUT with
6. Adjust with
3
and 6 for the best white balance.
7. Set the PICTURE and BRIGHTNESS to maximum.
8. Select GDRV and BDRV with
9. Adjust with
10. Press
3
and 6 for the best white balance.
MUTING
then
Service Adjustment Mode On
1. The CRT displays the time being adjusted.
2. Press
3. Press
4. Press
Display
hsiz 16
to save into the memory.
service
ntsc
vchp
then
Category
defl
00000000
ENTER
Mode
Signal Type
1
or 4 on the Remote Commander to select the time.
3
or 6 on the Remote Commander to change the data.
MUTING
Item
00000000
Display
Item
Service Adjustment Mode Memory
Turn the set off then on to exit Service Adjustment Mode.
Signal Type
Category
Mode
service defl hsiz 16
ntsc
vchp 00000000 00000000
Display
Item
write
Item Data
MUTING
ENTER
Green
Red
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
16

SECTION 3: SAFETY RELATED ADJUSTMENTS

3-1. X R565 CONFIRMATION METHOD
(HV HOLD-DOWN CONFIRMATION) AND READJUSTMENTS
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
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
.
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 for 20”/21” models, or 105 VDC for 24”/25” models.
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) for 20”/21” models (standard < 138.0 VDC) for 24”/25” models.
8. Input a white signal and set PICTURE and BRIGHTNESS to maximum: IABL = 1350 ± 100µA for 20”/21” models or IABL = 1650 ± 100µA for 24”/25” models
9. Repeat steps 4 through 7.
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
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.
Y
on the
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
17
(
)
FIGURE 1
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
DIGITAL MULTIMETER
+
-
X
R565
R
5
3
1
0
4
S
P
R
5
1
1
J
R
1
R
4
3
7
9
0
6
R
C
4
5
1
C
5
2
D
5
6
6
5
2
R
5
8
9
2
P
T
4
2
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
C
5
3
1
5
L
0
2
B
2
P
5
T
R
5
0
2
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
3
1
5
C
4
1
5
C
H
5
Q
B
5
2
5
C
L
5
1
5
R
5
3
7
R
5
6
2
2
R
5
5
2
2
E
C
5
2
7
R
5
4
9
R
5
1
5
6
7
C
5
6
1
R
5
4
6
5
4
5
D
6
R
5
4
8
C
5
4
5
R
9
0
R
5
4
0
0
0
D
2
7
C
5
R
5
4
7
6
1
5
L
R
5
4
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
T
P
O
R
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
4
7
5
4
5
C
I
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
R
5
8
3
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
3
0
5
R
C
5
9
0
1
9
5
R
B
0
9
5
Q
R
5
9
4
T
P
1
3
4
2
6
E
C
C
6
C
P
3
T
2
1
6
8
4
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
B
5
8
8
R
8
5
L
T
U
O
-
H
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
H
D
Y
+
3
1
H
-
O
2
P
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-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
18
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120

SECTION 4: CIRCUIT ADJUSTMENTS

Electrical AdjustmenTs by Remote Commander
Use the Remote Commander (RM-Y194, RM-W151, RM-Y180) to perform the circuit adjustments in this section.
Test Equipment Required: 1. Pattern generator 2. Frequency counter 3. Digital multimeter 4. Audio oscillator
4-1. SETTING THE SERVICE ADJUSTMENT
MODE
1. Standby mode (Power off).
2. Press the following buttons on the remote commander within a second of each other:
Display
Channel
5
Sound Volumne
Power
+
Service Adjustment Mode On
1. The CRT displays the item being adjusted.
2. Press
3. Press
4. Press
Category
Mode
service defl hsiz 16
Signal Type
1
or 4 on the Remote Commander to select the item.
3
or 6 on the Remote Commander to change the data.
MUTING
ntsc
vchp 00000000 00000000
then
ENTER
Display
Item
to write into memory.
Item Data
Service Adjustment Mode Memory
1. Press
Mode
Signal Type
Category
Mode
service defl hsiz 16
Signal Type
8
then
service defl hsiz 16
ntsc
vchp 00000000 00000000
ntsc
vchp 00000000 00000000
ENTER
Category
on the Remote Commander to initialize.
Display
Item
write
Display
Item Data
Item
Item
Data
write
Carry out Step 1 when adjusting IDs 0-6 and when replacing and adjusting IC002
4-2. 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 confi rm they were adjusted.
4-3. REMOTE ADJUSTMENT BUTTONS AND
INDICATORS
MUTING
(Enter into memory)
1
Disp. (Item up)
2
(Device Item Up)
4
Disp. (Item down)
8
(Initialize)
VOLUME (+)
(Service Mode)
RM-Y180
POWER
(Service Mode)
DISPLAY
(Service Mode)
3
Item (Data up)
6
Item (Data down)
5
(Device item down)
ENTER
(Enter into memory)
0
(Remove from memory)
3. Press
MUTING
then
ENTER
to write into memory.
2. Turn set off then on to exit Service Adjustment Mode.
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
19

4-4. SERVICE DATA LISTS

p
K
K
K
K
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
Service
Group
VERSION Fix 0 VER
1HSIZ 2HPOS 3 VSIZ
5VLIN 6SCOR 7 VBOW 8 VANG
9TRAP 10 PAMP 11 UPIN 12 LPIN 13 TROT 14 HBL 15 RBL 16 LBL 17 VBL
19 HDW 20 AFC 21 AFC1 22 AFCW 23 CDMD 24 HSS 25 VSS 26 SLDN 27 SLUP 28 JPSW
30 EHT 31 EHTG
DEF
VAR VAR VAR VAR 4 VPOS VAR VAR VAR VAR VAR VAR VAR VAR VAR VAR VAR VAR
FIX
FIX 18 HMSK
FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX 29 HOSC FIX FIX
DescriptionFix/ Var No. Name
rocessor version information
Micro 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 PARABOLA ( EW PIN ) UPPER CORNER ( UPPER PIN ) LOWER CORNER ( LOWER PIN ) TROT FBPBLK ( H BLK MODE SELECT ) HBLK R POS ( HBLK REAR TIMING: YUV OFFSET ) HBLK F POS ( HBLK FRONT TIMING: YUV OFFSET ) VBLK POS ( V BLK WIDTH ) Macro OFF ( TOP VEND [ WHEN MACROVISION ] PREVENT OFF ) IIC_HOUT_DUTY ( H PULSE WIDTH [ 25u/19u ] H AFC Gain ( AFC GAIN ) H Charge pump ( AFC1 TIME CONSTANT ) AFC1 PULLIN ( AFC1 PULL IN WIDE ) V CD MODE ( V DET WINDOW SW TIMING ) SYNC SLICE LVL(H) ( SYNC SLICE LEVEL [ H sepa ] ) SYNC SLICE LVL(L) ( SYNC SLICE LEVEL [ V sepa ] ) AUTO SLICE DOWN ( AUTO SLICE LEVEL DOWN ) AUTO SLICE UP ( AUTO SLICE LEVEL UP ) VJPSW ( JUMP SW ) H VCO FOR OFFSET ADJUST OFFSET EHT EHT GAIN ( EHT MODE )
NTSC
Init
Data
= 29 37 35 33 31 26 37 31 25
9 32 32
109
0 15 48
0
0
1
0
3
0
1
0
3
0
0
0
5
4
1
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
20
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
Service
Group
16 : 9
Service
Group
VP1
Fix/ Var No.
VAR VAR VAR VAR VAR VAR VAR VAR VAR VAR VAR
Fix/ Var
VAR VAR 2 GDRV VAR 3 BDRV VAR VAR 5 GCUT VAR 6 BCUT VAR VAR VAR VAR
FIX 11 RON FIX 12 GON FIX 13 BON
1 VSIZ 2 VPOS 3VLIN 4SCOR 5TRAP 6 PAMP 7UPIN 8LPIN
9 ABLG 10 SCON 11 VPW
Name Item name & ( Description )No.
1 RDRV
4 RCUT
7SCON
8 SHUE
9SCOL 10 SBRT
Item name & ( Description )Name
V RAMP SIZE V POSITION ( RAMP DC ) V LINEARITY S CORRECTION EW TRAPESIUM PARABOLA ( EW PIN ) UPPER CORNER ( UPPER PIN ) LOWER CORNER ( 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 HARDWARE AKB (B) CMP DATA SUB CONTRAST LEVEL SUB TINT (HUE) SUB COLOR LEVEL SUB BRIGHTNESS R OUTPUT ON ( 0:R OUTPUT OFF 1:R OUTPUT ON ) G OUTPUT ON ( 0:R OUTPUT OFF 1:R OUTPUT ON ) B OUTPUT ON ( 0:R OUTPUT OFF 1:R OUTPUT ON )
NTSC
Init
Data
55 37 30 20 30
0 34 32 15 10
1
NTSC
Init Video YUV 16:09
Data
45 45 45 28 28 30 N/A 33 33 29 N/A
120
98 98 72 N/A
102 102 91 N/A
16 16 16
77 7 17 17 11 11
1
1
1
120 120 N/A
27 N/A 14 N/A
N/A
N/A N/A
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
21
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
Service
Group
VP1
Fix/ Var No.
FIX 14 BLLV
FIX
FIX VAR 17 SSHO VAR 18 SSHP VAR 19 SHPF
FIX 20 SHCL
FIX
FIX
FIX
FIX
FIX
FIX
FIX
FIX 28 BKAT
FIX 29 BKRC
FIX 30 BKDP
FIX
15 MTRX 16 AXIS
21 SHMX 22 ACLV 23 AKBD 24 AKBS 25 REFP 26 YNRC 27 BKON
31 BKSP
Item name & ( Description )Name
BLUE STRETCH ( 00:NO<->11:DEEP ) only Color Temp "Cool" MATRIX RATIO SELECT R-Y PHASE SELECT SUB SHARPNESS GAIN (OVER) RF/VIDEO SUB SHARPNESS GAIN (PRE) RF/VIDEO SHARPNESS FOR ( 00:2 CLK <-> 11:5 CLK ) SHARPNESS CORING LEVEL SHARPNESS LIMITER LEVEL ACL GAIN AKB SELF DIAGNOSTIC COUNTER (@1 SEC) 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 DEPTH BLKSTPNT BLACK STRETCH POINT
NTSC
Init Video YUV 16:09
Data
1
0 52 10 26 25 N/A 15 31 30 N/A
10 0N/A
0 15
0
2
1
0 15
1 15
4
soft cont'l
2
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
22
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
Service
Group
VP2
Fix/ Var
FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX
FIX 12 YCMD
FIX 13 VACL FIX FIX 15 VAMX FIX FIX FIX FIX FIX
FIX VAR VAR VAR VAR VAR
FIX
No. Name Item name & ( Description )
1VMOF 2VMLO 3VMHI 4VMDL 5VMPL 6VMWD 7VMCL 8 VMMX
9CKLV 10 CKON 11 ALFA
14 VAGA
16 GAMM 17 YDLY 18 CDLY 19 YOFF 20 CBPF 21 BGPP 22 GDOF 23 BDOF 24 GCOF 25 BCOF 26 DCTV 27 DCTG
NTSC
Init Video YUV 16:09
Data
VM GAIN(Off) ( VM LEVEL AT "OFF" SETTING ) 2 VM GAIN(Low) ( VM LEVEL AT "LOW" SETTING ) VM GAIN(High) ( VM LEVEL AT "HIGH"SETTING ) VM DELAY ( VM DELAY ) VM POL ( VM POLARITY ) VM WIDTH ( VM WIDTH ) VM CORING LEVEL ( VM CORING LEVEL ) VM MAX ( VM LIMITER LEVEL ) KILLER LEVEL ( VM COLOR KILLER VTH ) FORCE KILLER ( FORCE KILLER ) ALFA ( ADAPTIVE DET SENSITIVITY ) MANEXP ( YC SEPA FORCE SELECT [ 00:ADAPTIVE 01:H 10:V 11:HV ] ) V APERTURE CORING LV ( V APERTURE CORING LEVEL ) V APERTURE GAIN ( V APERTURE GAIN LEVEL ) V APERTURE MAX GAIN (V APERTURE LIMITER LEVEL) GAMMA ( GAMMA [ 00:NO <-> 11:DEEP ] ) Y DELAY ( Y DELAY TIME ) C DELAY ( C DELAY TIME ) Y Mute ( Y OUTPUT MUTE ) SAW FILTER(7.2MHzBPF) ( C BPF FOR HI ) BGP POS ( BGP [ FOR C DECODER ] TIMING ) G DRIVE OFFSET only Color Temp. "Warm" B DRIVE OFFSET only Color Temp. "Warm" G CUT CMP DATA OFFSET only Color Temp. "Warm" B CUT CMP DATA OFFSET only Color Temp. "Warm" DCTRAN VTH<6:0> ( DCTRANSFER VTH ) DCTRAN GAIN<4:0> ( DCTRANFER GAIN )
15
soft cont'l
soft cont'l
14 11 28 30
soft cont'l
4 8 6 0 0 0
1 0 2
0
0
5
1 0 0 0 9 9
10N/A
13N/A
928N/A
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
23
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
Service
Group
NR
Fix/ Var
VAR VAR VAR
FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX
No. Name Item name & ( Description )
1SCOL
2 SHCL
3SHMX
4 YNRC
5VMHI
6VMCL
7 VMMX
8 VAMX
9GAMM 10 YNRS 11 WSTH 12 WSVA 13 WSCA 14 NRCH 15 NRCL 16 NRVL 17 NRVH 18 IPNC 19 IPNV
SUB COLOR LEVEL 17 SHARPNESS CORING LEVEL SHARPNESS LIMITER 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 THRNZV1( NOISE DET TIME CONSTANT ) THRNZV2 ( NOISE DET TIME CONSTANT ) THRNZH1 ( NOISE DET VTH ) THRNZH2 ( NOISE DET VTH ) DETNZ STATUS COUNTER DETECTION PERIOD
NTSC
Init
Data
15
7 7
10
0 7 0 0 1 7 0 5 0
16
2 0 2
10
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
24
(
)
(
)
(
)
(
y
]
(
)
(
)
(
)
(
)
(
])
Service
Group
PALLET
Fix/ Var No.
FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX
Name Item name & ( Description )
1 VPIC
2 VBRI
3VCOL
4 VHUE
5 VSHA
6 VVM
7VTRI
8 VAPA
9VGMA 10 VDCT
FIX 11 VBKP FIX 12 TBKD
PICTURE BRIGHTNESS COLOR HUE SHARPNESS VM COLOR TEMP APERTURE G GAMMA DCT LV BLACK STRETCH DEPTH ( VIDEO ) BLACK STRETCH DEPTH ( TUNER )
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
NTSC
BA6 DATA (DEC)
PALLET
= VIVID
PALLET
= STD
PALLET
= MOVIE
PALLET
= PRO
63 50 37 31 27 30 31 31 37 32 31 31 31 31 31 31 31 32 31 21
21 00 01 21 55 30 31 00
23 15 2 2
33 47 33 47
Service
Group
Y
Fix/ Var
No.
Name Item name & ( Description )
FIX 1 YNRS FIX 2 YTHR FIX 3 Y2D FIX 4 2DFX
FIX 5 CLPS
FIX 6 VLPF FIX 7 CLPF FIX 8 BPFB FIX 9 BPFF FIX 10 BKTS
FIX 11
VMG
FIX 12 CLPT
YNR SW Y THR 2D Y2D Fix C BPF Fix
YNR ON
Y SIGNAL THROUGH 2DYCS
Y SIGNAL GENERATE from 2DYCS
C SIGNAL GENERATE from H/V BPF onl CLAMP CONTROL SW ( 0: CLAMP OFF. 1: CLAMP AUTO. 2: CLAMP ON VIDEO LPF CHROMA LPF YCS HBPF BACK YCS HBPF FRONT BS T2 IFON VMGAIN2 ( MODULATOR FEEDBACK GAIN CONTROL
2
Y_LPF [ ANALOG ] for adjust
C_LPF [ ANALOG ] for adjust
YCS HBPF SELECT [ BACK ]
YCS HBPF SELECT [ FRONT ]
BLACK STRETCH RECOVER TIME OUT
CLAMP KEEP TIMER ( CLAMP AUTO ON KEEP TIMER COUNT [ @ 100 MS
NTSC
Init
Data
0 0 0 1
1
3 3 1 1 0
2
15
KV-20FS120/21FM120/21FS120/21FA310/24FS120/25FS120
25
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