Sony TRINITRON KV-29FS12K User manual

SERVICE MANUAL
BA-5 CHASSIS
MODEL COMMANDER DEST CHASSIS NO.
KV-29FS12K RM-Y149A KOREA SCC-S53A-A
TRINITRON®COLOR TV
RM-Y149AKV-29FS12K
895 Front.p65 7/6/00, 11:40 AM1

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KV-29FS12K
SPECIFICATIONS
Design and specifications are subject to change without notice.
Television system
AmericanTVStandard/NTSC
Channel coverage
VHF:2-13/UHF:14-69/CATV:1-125
Visible screen size
27” picture measured diagonally
Actual screen size
29” picture measured diagonally
Antenna
75 ohm external antenna terminal for VHF/UHF
Supplied accessories
Remote Commander RM-Y149A
SizeAA(R6) batteries (2)
Optional accessories
Connecting cables: VMC-810S/820S,VMC-720M,
YC-15V/30V, RK74A
U/V mixer EAC-66
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) 500mVrms (100% modulation), impedance: 47kilohms
4) More than 408 mVrms at the maximum volume setting (variable)
More than 408 mVrms (fix)
5) Y: 1.0 Vp-p, 75 ohms, sync negative; PB: 0.7 Vp-p, 75 ohms;
PR: Vp-p, 75 ohms
KV-29FS12K
Power requirements 120V-220V, 60Hz/50Hz
Number of inputs/outputs
Video
1)
3
S Video
2)
1
Audio
3)
3
Audio Out
4)
1
Y, P
B
, P
R 5)
1
Speaker output(W) 5Wx2
Power Consumption(W)
In use(Max) 185W
In standby 1W
Dimensions(W/H/D)
(mm) 700 x 632 x 512 mm.
(in) 27
1/2
x 24
7/8
x 20
1/6
in.
Mass
(kg) 47kg
(lbs) 103 lbs. 10 oz.

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KV-29FS12K
Section Title Page
Warnings and Cautions ....................................................................................................................................... 4
Self-DiagnosticFunction ...................................................................................................................................... 4
SafetyCheck-OutInstructions.............................................................................................................................. 7
1. DISASSEMBLY
1-1. Rear Cover Removal ................................................................................................................................. 8
1-2. ChassisAssemblyRemoval....................................................................................................................... 8
1-3. ServicePosition ........................................................................................................................................ 8
1-4. PictureTube Removal ............................................................................................................................... 9
2. SET-UP ADJUSTMENTS
2-1. BeamLanding......................................................................................................................................... 10
2-2. Convergence ...........................................................................................................................................11
2-3. Focus...................................................................................................................................................... 12
2-4. Screen(G2) ............................................................................................................................................ 13
2-5. Method of Setting the ServiceAdjustment Mode ..................................................................................... 13
2-6. WhiteBalanceAdjustments .................................................................................................................... 13
3. SAFETY RELATED ADJUSTMENTS
3-1. R564 Confirmation Method (HV Hold-Down Confirmation) and Readjustments ................................. 14
3-2. B+ Voltage Confirmation andAdjustment ................................................................................................ 14
4. CIRCUITADJUSTMENTS
4-1. Settingthe ServiceAdjustment Mode...................................................................................................... 16
4-2. MemoryWriteConfirmationMethod........................................................................................................ 16
4-3. AdjustmentButtons and Indicators.......................................................................................................... 16
4-4. MABoardAdjustments............................................................................................................................ 20
5. DIAGRAMS
5-1. BlockDiagram......................................................................................................................................... 22
5-2. CircuitBoard Location............................................................................................................................. 28
5-3. PrintedWiring Boards and SchematicDiagrams..................................................................................... 28
• ABoard .............................................................................................................................................. 29
• MABoard............................................................................................................................................ 36
• HX Board............................................................................................................................................ 40
• CA Board ............................................................................................................................................ 42
• HZ Board ............................................................................................................................................ 43
• K Board .............................................................................................................................................. 44
• VABoard ............................................................................................................................................ 45
• D Board .............................................................................................................................................. 46
5-4. Semiconductors ...................................................................................................................................... 48
6. EXPLODED VIEW
6-1. Chassis ................................................................................................................................................... 49
7. ELECTRICAL PARTS LIST ................................................................................................................................................ 50
TABLE OF CONTENTS

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KV-29FS12K
WARNINGSAND 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
OFTHIS RECEIVERIS DIRECTLY CONNECTED TO THE
AC POWER LINE.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
ONTHE SCHEMATICDIAGRAMS, EXPLODEDVIEWS,
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
ARECRITICALFORSAFE OPERATIONARE IDENTIFIED
IN THIS MANUAL. FOLLOW THESE PROCEDURES
WHENEVERCRITICALCOMPONENTSARE 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 AU COUCHE DE CARBONE
PEINTE SUR LE TUBE CATHODIQUE OU AU BLINDAGE DU TUBE
CATHODIQUE.
ATTENTION!!
AFIN D'EVITER TOUT RESQUE D'ELECTROCUTION PROVENANT D'UN
CHÁSSISSOUSTENSION,UNTRANSFORMATEURD'ISOLEMENTDOITETRE
UTILISÉLORSDETOUTDÉPANNAGE.LECHÁSSISDECERÉCEPTEUREST
DIRECTEMENTRACCORDÉÀL'ALIMENTATIONSECTEUR.
ATTENTIONAUX COMPOSANTS RELATIFSA LASECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE MARQUE
SUR LES SCHEMAS DE PRINCIPE, LES VUES EXPLOSEES ET LES
LISTES DE PIECES SONT D'UNEIMPORTANCE CRITIQUE POUR LA
SECURITE DU FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES
COMPOSANTS SONY DONT LE NUMERO DE PIECE EST INDIQUE DANS
LEPRESENTMANUELOUDANS DESSUPPLEMENTSPUBLIES PARSONY.
LESREGLAGES DE CIRCUITDONT L'IMPORTANCE ESTCRITIQUEPOUR
LA SECURITE DU FONCTIONNEMENT SONT IDENTIFIES DANS LE
PRESENT MANUEL. SUIVRE CES PROCEDURES LORS DE CHAQUE
REMPLACEMENT DE COMPOSANTS CRITIQUES, OU LORSQU'UN
MAUVAIS FONTIONNEMENT SUSPECTE.
SELF-DIAGNOSTIC FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER LED will automatically begin to flash.
The number of times the LED flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER LED flash
indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the Remote
Commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these problems occur.
Diagnostic Test Indicators
When an error occurs, the STANDBY/TIMER LED will flash a set number of times to indicate the possible cause of the problem. If there is
more than one error, the LED will identify the first of the problem areas.
Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”.

—5 —
KV-29FS12K
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.
Diagnostic Item Flash Count*
+B overcurrent 2 times
I-Prot 4 times
IK 5 times
*One flash count is not used for self-diagnostic.
Stopping the Standby/Timer LED Flash
Turnoffthepower switch ontheTVmain unit orunplug the powercord from theoutlet to stopthe STANDBY/TIMERLAMPfromflashing.
Self-Diagnostic Screen Display
For errors with symptoms such as “power sometimes shuts off”or “screen sometimes goes out”that cannot be confirmed, it is possible
to bring up past occurrences of failure on the screen for confirmation.
To Bring Up Screen Test
In standby mode, press buttons on the Remote Commander sequentially, in rapid succession, as shown below:
Display Channel 5Sound volume
Note that this differs from entering the service mode (sound volume ).
Power ON
+
Self-Diagnostic Screen Display
SELF DIAGNOSTIC
2: 000
3: N/A
4: 000
5: 001
101: N/A
Numeral 0 means that no fault was detected.
Numeral 1 means a fault was detected one time only.
STANDBY/TIMER LED

—6 —
KV-29FS12K
Handling of Self-Diagnostic Screen Display
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during repairs.
When you have completed the repairs, clear the result display to “0”.
Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion of the
repairs.
Clearing the Result Display
To clear the result display to “0”, press buttons on the Remote Commander sequentially when the diagnostic screen is displayed,
as shown below:
ENTERChannel 8
Quitting the Self-Diagnostic Screen
To quit the entire self-diagnostic screen, turn off the power switch on the Remote Commander or the main unit.
Self-Diagnostic Circuit
MA BOARD
IC301
Y/CHROMA JUNGLE
A BOARD
IC502
V. OUT
MA BOARD
IC001
SYSTEM
MA BOARD
IC003
MEMORY
IK IN
FROM
CA BOARD
CN705 PIN 1
3
HP/PROTECT
SDA
FROM
A BOARD
IC501 PIN 3
33
1 IO-SDATO-LED 43
REF 3I-PROT
IO-BDAT
5
42 B-DAT 5
22
DISPLAY
+B overcurrent (OCP) Occurs when an overcurrent on the +B (135V) line is detected by pin 33 of IC301 (MA Board). If
the voltage of pin 33 of IC301 (MABoard) is less than 1V whenV.SYNC is more than seven
verticals in a period, the unit will automatically turn off.
I-Prot Occurs when an absence of the vertical deflection pulse is detected by pin 5 of IC001 (MA
Board). Power supply will shut down when waveform interval exceeds 2 seconds.
IK If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be
detected by IC301 (MABoard). TV will stay on, but there will be no picture.
*(Refers to the RGB levels of theAKB detection Ref pulse that detects 1K).

—7 —
KV-29FS12K
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 absolutelycertainthat you havereplaced all the
insulators.
4. Look for unauthorized replacement parts, particularly
transistors,that were installedduringa previous repair.
Point them out to the customer and recommend their
replacement.
5. Look for parts which, though functioning, show obvious
signs of deterioration. Point them out to the customer
and recommend their replacement.
6. Check the line cords for cracks and abrasion.
Recommend the replacement of any such line cord
to the customer.
7. Check the B+ and HV to see if they are specified
values. Makesure your instrumentsare accurate;
be suspicious of your HV meter if sets always have
low HV.
8. Checkthe antenna terminals, metaltrim,“metallized”
knobs, screws, and all other exposed metal parts forAC
leakage. Check leakage as described below.
SAFETY CHECK-OUT
Leakage Test
TheAC 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. Acommercial leakage tester, such as the Simpson 229
or RCAWT-540A. Follow the manufacturers'
instructions to use these instructions.
2. Abattery-operatedAC milliammeter. The DataPrecision
245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means
of a VOMor battery-operatedACvoltmeter.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
aresuitable.Nearly all battery-operated digital
multimeters that have a 2 VAC range are suitable
(see FigureA).
How to Find a Good Earth Ground
Acold-waterpipeisa guaranteed earthground;the cover-
plateretainingscrew on mostACoutletboxesisalsoatearth
ground.If theretainingscrew is to be used asyourearth
ground,verifythatit is at groundbymeasuringtheresistance
betweenitanda cold-waterpipewithanohmmeter.The
readingshouldbezeroohms.If acold-water pipe is not
accessible, connecta 60-to 100-watttrouble- light (nota
neonlamp) between thehot side ofthe receptacle and the
retainingscrew.Tryboth slots,ifnecessary, to locatethehot
sideontheline; the lamp should lightatnormalbrillianceifthe
screwisatgroundpotential(seeFigureB).
Figure B. Checking for earth ground.FigureA. Using an AC voltmeter to checkAC leakage.
Trouble Light
AC Outlet Box Ohmmeter
Cold-water Pipe

—8 —
KV-29FS12K
SECTION 1
DISASSEMBLY
1-1. REAR COVER REMOVAL
1-2. CHASSISASSEMBLY REMOVAL 1-3. SERVICE POSITION
CA Board
A Board
D Board
VABoard
MA Board
Screw +BVTP 4x16
Screw +BVTP 4x16
RearCover
Screw +BVTP 4x16
Screw +BVTP 4x16
Screw +BVTP 4x16
Screw +BVTP 4x16
Screw +BVTP 4x16
Claw
Chassis
Assembly

—9 —
KV-29FS12K
Coated
Earth
Ground
Strap
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.
a
REMOVAL PROCEDURES
HOW TO HANDLE AN ANODE CAP
WARNING: High voltage remains in the CRT even after the power is disconnected. To avoid electrical shock, discharge the CRT before
attempting to remove the anode cap. Short between anode and coated earth ground strap of CRT.
NOTE: After removing the anode, 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.
1Do not use sharp objects which may cause damage to the
surface of the anode cap.
3Do not force turn the foot of the rubber cover. This may cause
the shatter-hook terminal to protrude and damage the rubber.
2To avoid damaging the anode cap, do not squeeze the rubber
covering too hard. A material fitting called a shatter-hook terminal
is built into the rubber.
2Use your thumb to pull the rubber
cap firmly in the direction indicated
by arrow
b.
3When 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.
1Turn up one side of the rubber cap in
the direction indicated by arrow
a.
b
Anode Button
c
ANODE CAP REMOVAL
6. Loosen the deflection yoke fixing screw and remove.
7. Place the setwith theCRT face downon acushion andremove
the degaussing coil holders.
8. Remove the degaussing coils.
9. Remove the CRT grounding strap and spring tentioners.
10. Unscrew the four CRT fixing screws [located on each CRT
corner] and remove the CRT [Take care not to handle the
CRT by the neck].
1. Discharge the anode of the CRT and remove the anode cap.
2. Unplug all interconnectingleadsfrom the deflectionyoke,neck
assembly, degaussing coils and CRT grounding strap.
3. Remove the CABoard from the CRT.
4. Remove the chassis assembly.
5. Loosen the neck assembly fixing screw and remove.
2
3
4
9
8
7
6
5
10
1

—10 —
KV-29FS12K
SECTION 2
SET-UP ADJUSTMENTS
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 deflection yoke mounting screw and set the purity
control to the center as shown below.
Purity Control
3. Turn the raster signal of the pattern generator to green.
4. Move the deflection yoke backward and adjust the purity
control so that green is in the center and red and blue are
at the sides evenly.
Blue Red
Green
5. Move the deflection yoke forward and adjust so that the entire
screen becomes green.
6. Switch over the raster signal to red and blue and confirm
the condition.
7. When the position of the deflection yoke is determined,
tighten it with the deflection yoke mounting screw.
8. If landing at the corner is not right, adjust by using the disk
magnets.
The following adjustments should be made when
a complete realignment is required or when 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: STANDARD
PICTURE control: ................ Normal
BRIGHTNESS control: ........ Normal
Perform the adjustments in order as follows:
1. Beam Landing
2. Convergence
3. Focus
4. Screen (G2)
5. White Balance
Note:Test equipment required:
•Color Bar Pattern Generator
•Degausser
•DC Power Supply
•DigitalMultimeter
a
c
b
d
ba
cd
Purity control
corrects this area
Disk magnets
or rotatable disk
magnets correct
these areas (a-d)
Deflection yoke positioning
corrects these areas

—11 —
KV-29FS12K
2-2. CONVERGENCE
Before starting convergence adjustments:
1. Perform FOCUS, V.LINAND V.SIZE adjustments.
2. Set BRIGHTNESS control to minimum.
3. Feed in dot pattern.
Vertical Static Convergence
1. AdjustV.STAT magnet to converge red, green and blue
dots in the center of the screen (Vertical movement adjust
V.STAT RV701 to converge).
B
G
R
Center dot
RGB
V.STAT magnet
RV701
V.STAT
2. Tilt theV.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 arrows
a and b, red, green, and blue dots move as shown below:
a
bbB
G
R
ab
B
G
R
aBGR
RGB
b
R
G
B
b
b
a
R
G
B
(1)
(3)
(2)
Dynamic Convergence Adjustment
Before performing this adjustment, perform Horizontal
and Vertical Static ConvergenceAdjustment.
1. Slightly loosen deflection yoke screw.
2. Remove deflection yoke spacers.
3. Move the deflection yoke for best convergence
as shown on the following page.
Horizontal Static Convergence
If the blue dot does not converge with the red and green dots,
perform the following:
1. Move BMC magnet (a) to correct insufficient H. Static
convergence.
2. Rotate BMC magnet (b) to correct insufficient V. Static
convergence.
3. After adjusting the BMC magnet, repeat Beam Landing
Adjustment.
BMC MAGNET
PURITY
V.STAT
b
BMC magnet

—12 —
KV-29FS12K
RGB BGR
RGB
R
R
R
G
B
G
B
G
B
RGB
BGR
R
G
BR
G
B
BGR RGB
4. Tighten the deflection yoke screw.
5. Install the deflection 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 deflection yoke.
(TLV)
YCH
XCV TLV
CA
Board
VA
Board
RV701
V.STAT
TLH Plate
B R R B
(R)(B) (B)(R)
TLH+
TLH-
2-3. FOCUS
1. Adjust FOCUS control for best picture.
ba
cd
a
b
d
a-d: screen-corner
misconvergence
c
4. Adjust XCV core to balance X axis.
5. Adjust YCHVR to balance Yaxis.
6. Adjust vertical red and blue convergence withV.TILT
(TLV VR).
Note: Perform adjustments 3-6 while tracking items 1 and 2.
Screen-Corner Convergence
1. Affix a permalloy assembly corresponding to the
misconverged areas.
Focus (FV)
Screen (G2)

—13 —
KV-29FS12K
2-5. METHOD OF SETTING THE SERVICE
ADJUSTMENT MODE
Service Mode Procedure
1. Standby mode (power off).
2. Press
Display Channel 5Sound volume Powe
r
+
on the Remote Commander (press each button within a
second).
Service Adjustment Mode In
1. The CRT displays the item being adjusted.
2. Press or on the Remote Commander to select the item.
3. Press or on the Remote Commander to change the
data.
4. Press then to save into the memory.
Service Adjustment Mode Memory
Turn set off then on to exit ServiceAdjustment Mode.
service defl hsiz 1
ntsc
vchp 00000000 00000000
Category
Display
Item
Mode
Item
Data
Signal
Type
write
2-4. SCREEN (G2)
1. Input a dots 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 170 VDC ± 2V.
Pedestal
170 VDC – 2V
Ground
4. Observe the screen and adjust SCREEN (G2) VR in FBT
to obtain the faintly visible background of dot signal.
2-6. WHITE BALANCE ADJUSTMENTS
1. Input an entire white signal with burst.
2. Set to ServiceAdjustment Mode.
3. Set the PICTURE and BRIGHTNESS to minimum.
4. Adjust with SBRT if necessary.
5. Select GCUT and BCUT with and .
6. Adjust with and for the best white balance.
7. Set PICTURE and BRIGHTNESS to maximum.
8. Select GDRV and BDRV with and .
9. Adjust with and for the best white balance.
10. To write into memory, press then .

—14 —
KV-29FS12K
SECTION 3
SAFETY RELATED ADJUSTMENTS
3-1. R564 CONFIRMATION METHOD
(HV HOLD-DOWN CONFIRMATION) AND
READJUSTMENTS
The following adjustments should always be performed when
replacing the following components which are marked with on
the schematic diagram:
Preparation Before Confirmation
1. Using a Variac, applyAC 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. Confirm that the voltage between C546 (+) or TP503
and ground is more than 21.0 VDC.
Hold-Down Operation Confirmation
1. Connect the current meter between Pin 11 of the FBT
(T505) 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 = 1730 ± 100 µA.
3. Confirm the voltage ofA BoardTP-600 is 135 ± 1.5 VDC.
4. Connect the digital voltmeter and the DC power supply
via diode 1SS119 to C546 (+) and ground. (See Figure 1
on the 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 < 24.78+0,-0.1 VDC).
8. Input a white signal and set PICTURE and BRIGHTNESS to
maximum: IABL = 1730 ± 100 µA.
9. Repeat Steps 4 to 7.
Hold-Down Readjustment
If the setting indicated in Step 2 of Hold-Down Operation
Confirmation cannot be met, readjustment should be performed by
altering the resistance value of R564 component marked with
.
+
IABL
ABL
T505
FBT
range
-
ammeter
3.0 mA DC
A
3-2. B+ VOLTAGE CONFIRMATION AND
ADJUSTMENT
Note: The following adjustments should always be performed
when replacing the following components, which are marked
with on the schematic diagram on theABoard.
A BOARD: IC601, PH601
1. Using a Variac, applyAC input voltage: 130 + 2.0, -0.0 VAC.
2. Input a dot signal.
3. Set the PICTURE and BRIGHTNESS controls to minimum.
4. Confirm that the voltage ofA BoardTP-600 is <136.5 VDC.
5. If Step 3 is not satisfied, replace the components listed above,
then repeat Steps 1–3.
PartReplaced ( )Adjustment ( )
DY, T505, CRT, IC501, C507,
C520,C505, C509, C515, T504,
T503,C551, L510,C546, C537,
C547,D517, D518,D519, R560,
R561,R562, R563,R565, R566,
R567,R525 ....................... ABoard
IC301.............................. MABoard
HV HOLD-DOWN
R564

—15 —
KV-29FS12K
Figure 1
C546
R438
R438R438
R438
R522
R522R522
R522
R541
R541R541
R541
R450
R450R450
R450
R445
R445R445
R445
C611
C611C611
C611
C448
C448C448
C448
R449
R449R449
R449
R454
R454R454
R454
C213
C213C213
C213
R527
R527R527
R527
R525
R525R525
R525
R514
R514R514
R514
R567
R567R567
R567
R225
R225R225
R225
R529
R529R529
R529
C530
C530C530
C530
C546
C546C546
C546
R563
R563R563
R563
R218
R218R218
R218
R227
R227R227
R227
C542
C542C542
C542
C541
C541C541
C541
C518
C518C518
C518
R231
R231R231
R231R232
R232R232
R232
R557
R557R557
R557
C552
C552C552
C552
R554
R554R554
R554
R555
R555R555
R555
R543
R543R543
R543
C532
C532C532
C532
R537
R537R537
R537
C523
C523C523
C523
R540
R540R540
R540
C543
C543C543
C543
C519
C519C519
C519
R535
R535R535
R535
CN504
CN504CN504
CN504
L507
L507L507
L507
R546
R546R546
R546
R534
R534R534
R534
R545
R545R545
R545
C551
C551C551
C551
L510
L510L510
L510 R533
R533R533
R533
R515
R515R515
R515
R516
R516R516
R516 C503
C503C503
C503
C536
C536C536
C536
C504
C504C504
C504
C513
C513C513
C513
R507
R507R507
R507
T503
T503T503
T503
T502
T502T502
T502
R659
R659
R659
R659
C629
C629C629
C629
L602
L602L602
L602
R447
R447R447
R447
D507
D507D507
D507
C659
C659
C659
C659
T504
T504T504
T504
FB610
FB610
FB610
FB610
C524
C524C524
C524
C550
C550C550
C550
R539
R539R539
R539
R518
R518R518
R518
FB502
FB502FB502
FB502
R505
R505R505
R505
L505
L505L505
L505
R506
R506R506
R506
L501
L501L501
L501
C517
C517C517
C517
L509
L509L509
L509
C510
C510C510
C510
R615
R615R615
R615
R601
R601R601
R601 IC502
IC502IC502
IC502
CN502
CN502CN502
CN502
Q411
Q411Q411
Q411
CN511
CN511CN511
CN511
CN506
CN506CN506
CN506
CN515
CN515CN515
CN515
Q501
Q501Q501
Q501
JR503
JR503JR503
JR503
JR502
JR502JR502
JR502
R573
R573R573
R573
R531
R531R531
R531
Q505
Q505Q505
Q505
C654
C654C654
C654
IC501
IC501IC501
IC501
L502
L502L502
L502
R532
R532R532
R532
D233
D233D233
D233
D232
D232D232
D232
D520
D520D520
D520
R561
R561R561
R561
D234
D234D234
D234
D235
D235D235
D235
R565
R565R565
R565
FB503
FB503FB503
FB503
R558
R558R558
R558 R559
R559R559
R559
TH501
TH501TH501
TH501
R511
R511R511
R511
R503
R503R503
R503
C554
C554C554
C554
C525
C525C525
C525
C511
C511C511
C511
D616
D616D616
D616
D521
D521D521
D521
R502
R502R502
R502
R547
R547R547
R547
R504
R504R504
R504
C505
C505C505
C505
D506
D506D506
D506
CN501
CN501
CN501
CN501
R568
R568R568
R568
T505
T505T505
T505
D511
D511D511
D511
D514
D514D514
D514 D517
D517D517
D517
D518
D518D518
D518
D516
D516D516
D516
R226
R226R226
R226
D236
D236D236
D236
D510
D510D510
D510
R407
R407R407
R407
C211
C211C211
C211
D620
D620D620
D620
R403
R403R403
R403
Q201
Q201Q201
Q201
Q503
Q503Q503
Q503
Q206
Q206Q206
Q206
Q205
Q205Q205
Q205
Q502
Q502
Q502
Q502
R553
R553R553
R553
C555
C555C555
C555
C515
C515C515
C515
C509
C509C509
C509
C624
C624C624
C624
R804
R804R804
R804
R803
R803R803
R803
R801
R801R801
R801
1
11
1
2
22
26
66
6
7
77
7
B
BB
BE
E
E
E
1
11
17
77
7
B
B
B
BE
E
E
E
1
11
19
99
9
10
1010
1018
1818
18
1
1
1
16
6
6
6
1
11
15 55
5
1
11
14 44
4
E
E
E
E
135V
135V135V
135V
+
+
+
+
1
11
1
4
44
4
5
55
5
8
88
8
C
C
C
C
B
B
B
B
2
22
26
6
6
6
4
44
4
H DY +
H DY +H DY +
H DY +
H DY -
H DY -H DY -
H DY -
V DY +
V DY +V DY +
V DY +
V DY -
V DY -V DY -
V DY -
H DY +
H DY +H DY +
H DY +
H DY -
H DY -H DY -
H DY -
1
11
1
2
22
2
3
33
3
4
44
4
5
55
5
6
66
6
H-OUT
H-OUT
H-OUT
H-OUT
H.PROT
H.PROTH.PROT
H.PROT
HEATER
HEATERHEATER
HEATER
-13V
-13V-13V
-13V
200V
200V200V
200V
H.PULSE
H.PULSEH.PULSE
H.PULSE
H.DRIVE
H.DRIVEH.DRIVE
H.DRIVE
+B
+B+B
+B
JUMPER-ID
JUMPER-IDJUMPER-ID
JUMPER-ID
T505
FBT
ABL11
AMMETER
3mA dc range
+
–
A
1SS119
POWER
SUPPLY
+
–
R564
DIGITAL
MULTIMETER
+
–
TP600

—16 —
KV-29FS12K
4-1. SETTING THE SERVICE ADJUSTMENT MODE
1. Standby mode (power off).
2. Press
Display Channel 5Sound volume Powe
r
+
on the Remote Commander (press each button within a
second).
Service Adjustment Mode On
1. The CRT displays the item being adjusted.
2. Press or on the Remote Commander to select an item.
3. Press or on the Remote Commander to change the data.
4. Press then to save into the memory.
Service Adjustment Mode Memory
service defl hsiz 1
ntsc
vchp 00000000 00000000
Category
Display
Item
Mode
Item
Data
Signal
Type
write
1. Press then on the Remote Commander to
initialize.
service defl hsiz 1
ntsc
vchp 00000000 00000000
Category
Display
Item
Mode
Item
Data
Signal
Type
write
2. Turn set off then on to exit service adjustment mode.
SECTION 4
CIRCUIT ADJUSTMENTS
Carry out step 1 when adjusting
IDs 0–6 and when replacing
and adjusting IC003.
4-2. MEMORY WRITE CONFIRMATION METHOD
1. After adjustment, remove the power plug from theAC outlet,
then plug it in again.
2. Turn the power switch ON and set to service mode.
3. Call the adjusted items again to confirm they were adjusted.
4-3. ADJUSTMENT BUTTONS AND INDICATORS
ELECTRICAL ADJUSTMENTS BY REMOTE COMMANDER
Use the Remote Commander (RM-Y149A) to perform the circuit adjustments in this section.
NOTE: Test Equipment Required:
•Pattern generator
•Frequency counter
•Digitalmultimeter
•Audiooscillator
MUTING POWER
DISPLAY
1
4
8
3
5
ENTER
VOLUME (+)
(Enter into
memory)
(Service Mode)
(Item up)
(Item down)
(Initialize)
(Service mode)
(Enter into
memory)
(Service mode)
(Data up)
(Data down)
(Device item
down)
0
(Remove from
memory)
RM-Y149A

—17 —
KV-29FS12K
Reg # ITEM FUNCTION RANGE
FIX
DATA NTSC PAL M PAL N VIDEO RF
AVERAGE
DATA
1 HSIZ Horizontal Size Adjustment 0-63 15 12 7 14
2 HPOS Horizontal Position Adjustment 0-63 13 8 9 17
3 VBOW Vertical Line Bowing Adj. 0-15 9 10 8 6
4 VANG Vertical Line Bowing Slant Adj. 0-15 8 10 9 12
5 VTRP TRAPEZIUM 0-31 19 14 14 16
6 HTRP Horiz. Trapezoid 0-15 6 7 5 0
7 TROT Tilt Correction 0-63 31 31 31 31
8 PAMP Horizontal PIN distortion Adj. 0-63 19 19 21 20
9 UPIN Upper PIN Distortion Adj. 0-63 34 33 36 35
10 LPIN Lower PIN Distortion Adj. 0-63 32 34 40 34
11 VSIZ Vertical Size Adjustment 0-63 32 43 29 38
12 VPOS Vertical Position Adj. 0-63 30 30 32 29
13 VLIN Vertical lineality Adj. 0-15 3 6 10 5
14 SCOR Vertical "S" Correction Adjustment 0-15 6 8 10 7
15 VZOM 16:9 CRT Z Mode on/off 0-1 0 0
16 EHT Vertical High-Voltage Compensation 0-15 5 5
17 ASP Aspect Ratio control 0-63 47 47
18 SCRL 16:9 CRT Z Mode Trans. Scroll 0-63 31 31
19 HBLK Horizontal Blanking on/off 0-1 1 1
20 LBLK Left Blanking Adjustment 0-15 13 14
21 RBLK Rigth Blanking Adjustment 0-15 8 8
22 HDW Horizontal Drive Pulse Width 1 1
23 EWDC "Parabola" EW, D.C. Adjustment 0-1 0 0
24 LVLN Lower Screen BTM Vertical Line Adj. 0-15 0 0
25 UVLN Upper Screen BTM Vertical Line Adj. 0-15 0 0
26 INTL INTERLACE 0-3 0 0
27 G2SW 0-1 0 0
28 G2LV 0-7 0 0
29 HOSC Horizontal VCO Oscillation Freq. 0-15 12 7
30 VSS Vertical Sync Slice Level 0-1 0 0
31 HSS Horizontal Sync Slice Level 0-1 0 0
32 HMSK For Macro Vision 0-1 0 0
33 VTMS Select Signal VTIM Pin 0-3 0 0
34 CDMD Vertical Count Down Mode Switching 0-3 3 0 3
35 AFC AFC Loop Gain Switching 0-3 0 0
36 FIFR Field Frequency 0-3 1 3
37 VBLK VBLKW 0-3 0 0
38 REFP REFP 0-1 0 0
39 JPSW JUMPSW 0-1 MENU 0
40 RDRV R Output Drive control 0-63 41 38
41 GDRV G Output Drive control 0-63 25 28
42 BDRV B Output Drive control 0-63 25 26
43 RCUT R Output Cutoff control 0-15 31 31
44 GCUT G Output Cutoff control 0-15 15 13
45 BCUT B Output Cutoff control 0-15 12 14
46 SCON SUB CONT 0-15 8 10
47 SHUE Sub HUE adjustment 0-31 16 16
48 SCOL Sub COLOR adjustment 0-31 18 18 18 18
49 SBRT Sub BRIGHTNESS adjustment 0-31 16 17
50 CHUE SUB HUE (Except YUV 0-31 7 6
51 CCOL SUB COLOR (Except YUV) 0-31 7 7 7 4
52 UOFS YUV U OFFSET 0-15 7 7
53 VOFS YUV V OFFSET 0-15 7 7
54 RON R Output on/off 0-1 1 1
55 GON G Output on/off 0-1 1 1
56 BON B Output on/off 0-1 1 1
57 AXPL Axis PAL 0-1 0 0
58 AXNT Axis NTSC 0-1 1 1
59 CBPF Chroma BPF on/off 0-1 1 1
60 CTRP Y TRAP FILTER on/off 0-1 1 1
61 COFF Color On/off 0-1 0 0
62 KOFF Set Color Killer 0-1 0 0
63 SSHP Sub SHARPNESS 0-15 5 5
64 SHPF SHARPNESS Circuit Fo 0-3 Palette 2
65 PREL Pre-Shoot/ Over-Shoot 0-1 1 0
66 Y-DC DC transmition Ratio Switching 0-3 Palette 2
67 GAMM Gamma Correction 0-3 Palette 2
68 ABLM ABL Mode Switch 0-1 1 1
69 VTH ABL CD VHT Switching 0-1 1 1
70 YDEL Y Delay Time Control 0-15 7 7
71 NCOL No Color ID 0-1 1 1
72 FSC FSC Out on/off 0-1 1 1
73 K-ID Killer ID Control on/off 0-1 0 0
74 GDOF 0-31 3 3
75 BDOF 0-31 16 16
76 GCOF 0-31 16 16
77 BCOF 0-31 7 7
78 SYSC Color System 0-7 4 4
79 VENH Vertical Enhancement 0-7 Palette 3
Adjustment Items

—18 —
KV-29FS12K
Reg # ITEM FUNCTION RANGE
FIX
DATA NTSC PAL M PAL N VIDEO RF
AVERAGE
DATA
80 PDSO PDS OFF 0-1 0 0
81 CK CK 0-1 0 0
82 VNL VNL 0-15 3 3
83 HPK HPK 0-1 0 0
84 HPKO HPK OFF 0-1 Palette 0
85 CORE CORE 0-3 2 1
86 TRAP TRAP 0-1 1 1
87 CHTR CH TRAP 0-1 0 0
88 CBPF CBPF 0-1 1 1
89 ENHO ENHOFF 0-1 0 0
90 NMRD NMRD 0-3 0 0
91 YAPS YAPS 0-3 3 3
92 CLKS CLKS 0-3 0 0
93 NSTD NSTDS 0-3 0 0
94 MSS MSS 0-3 0 0
95 KILS KILS 0-3 1 1
96 ADIN ADIN 0-1 0 0
97 EXCS EXCSS 0-3 1 1
98 CPP CPP 0-3 2 2
99 HDP HDP 0-7 4 4
100 CDL CDL 0-7 4 4
101 DYCR DYCOR 0-15 2 2
102 DYGN DYGAIN 0-15 10 10
103 DCCR DCCOR 0-15 3 3
104 DCGN DCGAIN 0-15 6 6
105 YNRL YNRLIM 0-3 1 1
106 CNRL CNRLIM 0-3 1 1
107 WSC WSC 0-3 1 1
108 VTRH VTRH 0-3 1 1
109 VTRR VTRR 0-3 1 1
110 LDSR LDSR 0-3 2 2
111 VAPG VAPGAIN 0-7 3 3
112 VAPI VAPINV 0-31 6 6
113 TEST TEST 0-1 0 0
114 YPFT YPFT 0-3 3 3
115 YPFG YPFG 0-15 7 7
116 CC3N CC3N 0-1 0 0
117 SELD SELD 0-1 1 1
118 D2GN D2GAIN 0-7 4 5
119 YHCR YHCOR 0-3 0 0
120 YPFC YPFCOR 0-1 0 0
121 SHT SHT 0-3 0 0
122 MVT MVT 0-1 0 0
123 OTT OTT 0-1 0 0
124 CL2D CL2D 0-1 1 1
125 CLKG CLKGGT 0-1 0 0
126 HPLL HPLLFS 0-1 1 1
127 BPLL BPLLFS 0-1 0 0
128 FSCF FSCFG 0-1 0 0
129 PLLS PLLS 0-1 1 1
130 KILR KILR 0-15 3 3
131 HSSL HSSL 0-15 12 12
132 VSSL VSSL 0-15 8 8
133 BGPS BGPS 0-15 4 4
134 BGPW BGPW 0-15 10 10
135 ADCK ADCLKS 0-3 3 3
136 NDSW NSDSW 0-1 1 1
137 PFRN FREE_RUN 0-1 0 0
138 PRVS RVS 0-1 0 0
139 PCON CONTRAST 0-127 45 45
140 PUCO U-DAC 0-127 10 16
141 PVCO V-DAC 0-127 18 24
142 PHUE 0-31 15 15
143 PKIL KILLER 0.1 0 0
144 PSEP EXT_SC_SEL 0-3 2 2
145 PHIM 0-1 0 0
146 PSUB 0-1 0 0
147 PBGS BG_START 0-63 14 14
148 PDL0 0-15 6 6
149 PDL1 0-15 13 13
150 PBRT Y_OFFSET 0-31 25 25
151 PVP1 0 0
152 PUP1 0 0
153 PVP2 0 0
154 PUP2 0 0
155 PVP3 0 0
156 PUP3 0 0

—19 —
KV-29FS12K
Notes:
No. 1–206 show the order that each adjustment mode may be selected while in service mode.
Data Range shows the range of possible settings for each adjustment mode.
Initial Data shows the standard settings for each adjustment mode.
Reg # ITEM FUNCTION RANGE
FIX
DATA NTSC PAL M PAL N VIDEO RF
AVERAGE
DATA
157 PACS SET_ACC 0-1 1 1
158 PSDL SYNC_DELAY 0-3 0 0
159 PDCO 0-3 0 0
160 PCGA C_GAIN 0-1 1 1
161 PAAF 0-1 0 0
162 PSU2 0-1 0 0
163 PCVF 0-1 0 0
164 PBIT BITSEL 0-1 0 0
165 PAFC AFCBITSEL 0-1 0 0
166 PACC ACC_LEVEL 0-63 22 22
167 PBUR BURST_CLK 0-1 0 0
168 PEVE EVENUPRA 0-1 0 0
169 PINW INV_WFF 0-1 0 0
170 PINR INV_REF 0-1 0 0
171 PREF RFF_FIX 0-1 0 0
172 PARE AUTO_REF 0-1 1 1
173 PAVE AVERAGE 0-1 0 0
174 PFRA FREE_RUN_ADJ 0-15 0 0
175 PPAL SUB_PALM_JUDGE 0-255 0 0
176 PHPO 0-31 9 6
177 PVPO 0-31 22 22
178 PHTI HT 0-15 5 9
179 PHAJ ADJ 0-15 1 1
180 PBGY BGY 0-15 0 0
181 PCRO CROSS_SEL 0-1 0 0
182 PPAR PALRY 0-63 2 2
183 PHPF HPFOFF 0-1 0 0
184 PFSC FSC_OUTPUT 0-1 0 0
185 PVCH SET_VCHIP 0-1 0 0
186 PVON VCHIP_ONLY 0-1 1 1
187 PVLN LINE_NUM 0-31 17 17
188 PVSB STB_DLY 0-255 64 64
189 PVLV L_LEVEL 0-255 130 130
190 SBAL Sub Balance 0-15 5 5
191 SBAS Sub Bass 0-7 0 0
192 STRE Sub Trebble 0-7 3 3
193 BBEL BBE Low 0-15 0 0
194 BBEH BBE High 0-15 0 0
195 BBE BBE 0-1 0 0
196 AUX SRS, Simulated 0-3 0 0
197 DISP O.S.D Display position 0-130 20 34
198 HCLW Horizontal Count Lower limit 0-255 16 16 16
199 HCHG Horizontal Count High limit 0-255 64 64 64
200 ID0 0-255 23
201 ID1 0-255 31
202 ID2 0-255 215
203 ID3 0-255 130
204 ID4 0-255 233
205 ID5 0-255 19
206 ID6 0-255 132
service id’s id5 19
ntsc
M37280MK-00SP VERB.O
Function
ID
Number
Mode Data
Signal
Type 00010011
Chip
Version

—20 —
KV-29FS12K
4-4. MA BOARD ADJUSTMENTS
H. Frequency (Free Run) Check
1. Input a TV mode (RF) with no signal.
2. Connect a frequency counter to base of Q501
(TP-500 H. DRIVE) on theABoard.
3. Check H. Frequency for 15735 ± 200 Hz .
V. Frequency (Free Run) Check
1. Select video 1 with no signal input.
2. Set the conditions for a standard setting.
3. Connect the frequency counter to TP-508 (V OUT) or
CN501 pin (V DY+) and ground on theABoard .
4. Check that V. Frequency shows 60 ± 4 Hz.
Drive (RDRV)
1. Input a color-bar signal and set the level to 75%.
2. Set in Standard mode.
3. Activate the ServiceAdjustment Mode.
4. Set both GON and BON items. Using and ; set each to
the following values. Leave RON set to “1”.
service video rdrv 26
ntsc
vchp
Category
Display
Item
Mode
Item
Data
Signal
Type
000000000 00000000
R ON: ON (1)
G ON: OFF (0)
B ON: OFF (0)
5. Connect an oscilloscope probe to CA Board, J701 Pin 12
(KR) (Red Out) .
6. Select RDRV with and .
7. Adjust the value of RDRV with and for
92.5 ± 3 VDC.
8. Reset GON and BON values to “1”.
R ON: ON (1)
G ON: ON (1)
B ON: ON (1)
9. Press then to save into the memory.
Display Position Adjustment (DISP)
1. Input a color-bar signal.
2. Set to ServiceAdjustment Mode.
3. Select DISP with and .
4. Adjust values of DISP with and to adjust characters
to the center.
5. Write to memory by pressing then .
6. Check to see if the text is displayed on the screen.
service micro disp 48
ntsc
vchp
Category
Display
Item
Mode
Item
Data
Signal
Type
00000000 00000000
Sub Bright Adjustment (SBRT)
1. Input a monoscope signal.
2. Activate the ServiceAdjustment Mode.
3. Set the PICTURE and BRIGHTNESS to minimum.
4. Select the SBRTitem with and .
5. Adjust the values of SBRT with and to obtain a faintly
visiblecrosshatch.
6. Press then to save into the memory.
Sub Hue, Sub Color Adjustment (CHUE, CCOL)
1. Input a color-bar signal.
2. Activate the ServiceAdjustment Mode.
3. Connect an oscilloscope probe to CA Board, CN705
Pin Blue Out.
4. Select the CHUE and CCOL item with and .
5. While showing the CHUE item, adjust the waveform with
and until the second and third bars show the same level
(V2 = V3 < 0.1 Vp-p).
6. While showing the CCOLitem, adjust the waveform with
and until the first and fourth bars show the same level
(V1 = V4 < 0.1 Vp-p).
V1 V2 V3 V4
7. Press then to save into the memory.
V. Size Adjustment (VSIZ)
1. Input a crosshatch signal.
2. Activate the ServiceAdjustment Mode.
3. Select the VSIZ item with and .
4. Adjust value of VPOS with and for the best vertical
center.
5. Press then to save into the memory.