Design and specifications are subject to change without notice.
— 2 —
Page 3
KV-34FS12T
TABLE OF CONTENTS
SectionTitlePage
Warnings and Cautions ....................................................................................................................................... 4
Self-Diagnostic Function ...................................................................................................................................... 4
2-3.Service Position ...................................................................................................................................... 14
R564 Confirmation Method (HV Hold-Down Confirmation) and Readjustments ................................. 20
• A Board .............................................................................................................................................. 38
• MA Board............................................................................................................................................ 45
• CA Board............................................................................................................................................ 51
• K Board .............................................................................................................................................. 52
• V A Board ............................................................................................................................................ 54
• D Board .............................................................................................................................................. 55
8.ELECTRICAL P ARTS LIST .............................................................................................................................. 59
— 3 —
Page 4
KV-34FS12T
WARNINGS AND CAUTIONS
CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE
AND THE ANODE CAP TO THE METAL CHASSIS, CRT
SHIELD, OR CARBON PAINTED ON THE CRT, AFTER
REMOVING THE ANODE.
WARNING!!
AN ISOLATION TRANSFORMER SHOULD BE USED
DURING ANY SERVICE TO AVOID POSSIBLE SHOCK
HAZARD, BECAUSE OF LIVE CHASSIS. THE CHASSIS
OF THIS RECEIVER IS DIRECTLY CONNECTED TO THE
AC POWER LINE.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
ON THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS,
AND IN THE 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 OPERA TION ARE IDENTIFIED
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 AU COUCHE DE CARBONE
PEINTE SUR LE TUBE CATHODIQUE OU AU BLINDAGE DU TUBE
CATHODIQUE.
ATTENTION!!
AFIN D'EVITER TOUT RESQUE D'ELECTROCUTION PROVENANT D'UN
CHÁSSIS SOUS TENSION, UN TRANSFORMATEUR D'ISOLEMENT DOIT ETRE
UTILISÉ LORS DE TOUT DÉPANNAGE. LE CHÁSSIS DE CE RÉCEPTEUR EST
DIRECTEMENT RACCORDÉ À L'ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE MARQUE
SUR LES SCHEMAS DE PRINCIPE, LES VUES EXPLOSEES ET LES
LISTES DE PIECES SONT D'UNEIMPORTANCE CRITIQUE POUR LA
SECURITE DU FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES
COMPOSANTS SONY DONT LE NUMERO DE PIECE EST INDIQUE DANS
LE PRESENT MANUEL OU DANS DES SUPPLEMENTS PUBLIES P AR SONY.
LES REGLAGES DE CIRCUIT DONT L'IMPORT ANCE EST CRITIQUE POUR
LA SECURITE DU FONCTIONNEMENT SONT IDENTIFIES DANS LE
PRESENT MANUEL. SUIVRE CES PROCEDURES LORS DE CHAQUE
REMPLACEMENT DE COMPOSANTS CRITIQUES, OU LORSQU'UN
MAUVAIS FONTIONNEMENT SUSPECTE.
SELF-DIAGNOSTIC FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the ST ANDBY/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”.
— 4 —
Page 5
Display of Standby/Timer LED Flash Count
2 times
4 times
5 times
KV-34FS12T
LED ON 0.3 sec.
LED OFF 0.3 sec.
LED OFF
3 sec.
STANDBY/TIMER LED
Diagnostic ItemFlash Count*
+B overcurrent2 times
I-Prot4 times
IK5 times
*One flash count is not used for self-diagnostic.
Stopping the Standby/Timer LED Flash
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER LAMP from flashing.
Self-Diagnostic Screen Display
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible
to bring up past occurrences of failure on the screen for confirmation.
To Bring Up Screen Test
In standby mode, press buttons on the Remote Commander sequentially, in rapid succession, as shown below:
DisplayChannel
5
Sound volume
Power ON
Self-Diagnostic Screen Display
SELFDIAGNOSTIC
2:000
Numeral0meansthatnofaultwasdetected.
3:N/A4:0005:001
Numeral1meansafaultwasdetectedonetimeonly.
101:N/A
Note that this differs from entering the service mode (sound volume
— 5 —
+
).
Page 6
KV-34FS12T
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:
8
Quitting the Self-Diagnostic Screen
To quit the entire self-diagnostic screen, turn of f the power switch on the Remote Commander or the main unit.
ENTERChannel
Self-Diagnostic Circuit
+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 (MA Board) is less than 1V when V.SYNC is more than seven
verticals in a period, the unit will automatically turn off.
I-ProtOccurs 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.
IKIf the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be
detected by IC301 (MA Board). TV will stay on, but there will be no picture.
*(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K).
— 6 —
Page 7
SAFETY CHECK-OUT
KV-34FS12T
After correcting the original service problem, perform the
following safety checks before releasing the set to the
customer:
1. Check the area of your repair for unsoldered or poorly
soldered connections. Check the entire board surface
for solder splashes and bridges.
2. Check the interboard wiring to ensure that no wires are
“pinched” or touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground
straps, and mounting hardware have been replaced.
Be absolutely certain that you have replaced all the
insulators.
4. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair .
Point them out to the customer and recommend their
replacement.
5. Look for parts which, though functioning, show obvious
signs of deterioration. Point them out to the customer
and recommend their replacement.
6. Check the line cords for cracks and abrasion.
Recommend the replacement of any such line cord
to the customer.
7. Check the B+ and HV to see if they are specified
values. Make sure your instruments are accurate;
be suspicious of your HV meter if sets always have
low HV .
8. Check the antenna terminals, metal trim, “metallized”
knobs, screws, and all other exposed metal parts for AC
leakage. Check leakage as described below.
Leakage Test
The AC leakage from any exposed metal p art 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 Simp son 229
or RCA WT-540A. Follow the manufacturers'
instructions to use these instructions.
2. A battery-operated AC milliammeter . The Data Precision
245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means
of a VOM or battery-operated AC voltmeter. The “limit”
indication is 0.75 V , so analog meters must have an
accurate low voltage scale. The Simpson’s 250 and
Sanwa SH-63TRD are examples of passive VOMs that
are suitable. Nearly all 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 coverplate retaining screw on most AC outlet boxes is also at earth
ground. If the retaining screw is to be used as your earth
ground, verify that it is at ground by measuring the resistance
between it and a cold-water pipe with an ohmmeter. The
reading should be zero ohms. If a cold-water pipe is not
accessible, connect a 60- to 100-watt trouble- light (not a
neon lamp) between the hot side of the receptacle and the
retaining screw. Try both slots, if necessary , to locate the hot
side on the line; the lamp should light at normal brilliance if the
screw is at ground potential (see Figure B).
— 7 —
Trouble Light
AC Outlet Box
Figure B. Checking for earth ground.Figure A. Using an AC voltmeter to check AC leakage.
Ohmmeter
Cold-water Pipe
Page 8
The instructions mentioned here are partial abstracts from the Operating Instruction Manual.
4
Operating Instructions
Cable Box Connections
Some pay cable TV systems to use scrambled or encoded signals that
requireacableboxtoviewallchannels.
Cable Box
1
Connect the coaxial cable from your cable service to the IN jack on
your cable box.
2
Connect a coaxial cable (not supplied) from the OUT jack on your
cable box to the VHF/UHF jack on your TV.
Cable Box and Cable
For this set up, you can switch between scramble channels (through your
cable box), and normal (CATV) channels by using thebutton.
If you will be controlling all channel selection through your cable box, you
should consider using the Channel Fix feature, (see page 26).
If you are connecting a cable box through the AUX input and would like to
switch between the AUX and normal (CATV) input, you should consider using
the Channel Fix feature, (see page 26).
Your Sony remote control can be programmed to operate your cable box,
(see page 36).
When using PIP, you cannot view the AUX input in the window picture.
Cable
IN
OUT
(Rear of TV)
VHF/UHF
Cable Box
Cable Box
(Rear of TV)
AUX
OUT
IN
TO CONVERTER
(Signal)
VHF/UHF
75-ohm coaxial cable (not supplied)
CATV cable (unscrambled channels)
The page numbers shown reflect those of the Operating Instruction Manual.
Connecting Your TV
Read this chapter before s etting up your TV for the first time. This section
covers basic connections in addition to any optional equipment you may
be connecting.
KV-34FS12T
SECTION 1 GENERAL
— 8 —
Basic Connections
TV with indoor or outdoor antenna, or CATV cable
Depending on the cable available in your home, choose one of the
connections below:
If you are connecting to an indoor or outdoor antenna, you may need to
adjust the orientation of the antenna for best reception.
3
Page 9
Connecting Your TV
6
Operating Instructions
TV and Cable Box
1
Connect the coaxial cable from your cable service to the IN jack on
your cable box.
2
Connect a coaxial cable (not supplied) from the OUT jack on your
cable box to the VHF/UHF jack on the TV.
To view channels from your cable box, tune your TV to channel 3 or 4 (as set
on the rear panel of your cable box) and use the cable box’s remote control to
change channels.
If you will be controlling all channel selection through your cable box, you
should consider using the Channel Fix feature, (see page 26).
1
cable
2
Cable Box
Rear of TV
From
Connecting Additional Equipment
TV and VCR
1
From
cable/
antenna
— 9 —
1 Connect the coaxial cable from your TV antenna or cable service to
the IN jack on your VCR.
2 Connect a coaxial cable (not supplied) from the OUT jack on your
VCR to the VHF/UHF jack on the TV.
To watch video programs from your VCR, tune your TV to channel 3 or 4 (as
set on the rear of your VCR).
(Optional connection)
3 If your VCR is equipped with video outputs, you can get better
picture quality by connecting A/V cables (not supplied) from
AUDIO and VIDEO OUT on your VCR to AUDIO/VIDEO IN on
your TV.
For optimum picture quality, use S VIDEO instead of the yellow A/V cable.
S VIDEO does not provide sound, the audio cables must still be connected.
2
VCR
(Optional connection)
3
Rear of TV
You can use the button to switch between the VHF/UHF and VIDEO
inputs.
KV-34FS12T
5
Page 10
TV, Cable box, and Cable
8
Operating Instructions
TV, VCR, and Cable box
1
Connect the coaxial cable from your cable service to the IN jack on
your cable box.
2
Connect a coaxial cable (not supplied) from the OUT jack on your
cable box to the IN jack on your VCR.
3
Connect a coaxial cable (not supplied) from the OUT jack on your
VCR to the VHF/UHF jack on the TV.
(Optional connection)
4
If your VCR is equipped with video outputs, you can get better
picture quality by connecting A/V cables (not supplied) from
AUDIO and VIDEO OUT on your VCR to AUDIO/VIDEO IN on
your TV.
If you will be controlling all channel selection through your cable box, you
should consider using the Channel Fix feature, (see page 26).
For optimum picture quality, use S VIDEO instead of the yellow A/V cable.
S VIDEO does not provide sound, the audio cables must still be connected.
You can use the button to switch between the VHF/UHF and VIDEO
inputs.
3
Cable
4
(Optional connection)
Cable box
1
VCR
2
Rear of TV
KV-27FS16, KV-27FV16, KV-32FS16, KV-29FV16 only
For this set up, you can switch between scrambled channels (through
your cable box) and normal (CATV) channels by pressing.
Cable Box
KV-34FS12T
Connecting Your TV
Rear of TV (KV-27FV16 only)
— 10 —
When using PIP, the AUX input cannot be viewed in the window picture.
From
Cable
7
Page 11
Connecting Your TV
10
Operating Instructions
TV, Satellite Receiver, and VCR
1
Connect the cable from your satellite antenna to SATELLITE IN on
your satellite receiver.
2
Connect the coaxial cable from your cable or antenna to the
IN jack on your VCR.
3
Using a coaxial cable, connect the OUT jack on your VCR to the
VHF/UHFjackonyourTV.
4
Using A/V cables, connect AUDIO and VIDEO OUT on your
satellite receiver to AUDIO and VIDEO IN on your VCR.
5
Using A/V cables, connect AUDIO and VIDEO OUT on your VCR to
AUDIO and VIDEO IN on your TV.
To view from the satellite receiver or VCR, select the video input to which
your satellite receiver or VCR is connected by pressing on the remote
control.
AUDIO R AUDIO L VIDEO
VHF/UHF
OUT
IN
LINE OUT
LINE IN
VHF/UHF
OUT
IN
SATELLITE IN
AUDIO R AUDIO L VIDEO
LINE OUT
Satellite receiver
4
5
2
3
1
Rear of TV
VCR
Satellite
antenna
From
antenna
cable/
cable
TV and Satellite Receiver
Satellite receiver
SATELLITE IN
LINE OUT
AUDIO R AUDIO L VIDEO
3
Satellite
antenna
cable
1
2
From
cable/
antenna
VHF/UHF
IN
OUT
— 11 —
1
Connect the cable f rom your satellite antenna to SATELLITE IN on
your satellite receiver.
2
Connect the coaxial cable from your cable or antenna to the
VHF/UHFjackonyourTV.
3
Using A/V cables, connect AUDIO and VIDEO OUT on your
satellite receiver to AUDIO and VIDEO IN on your TV.
For optimum picture quality, use S VIDEO instead of the yellow A/V cable.
S VIDEO does not provide sound, the audio cables must still be connected.
You can use the button to switch between the VHF/UHF and satellite
receiver inputs.
Rear of TV
KV-34FS12T
9
Page 12
Using the Remote Control and
Using the Remote Control and Basic Functions
15
SLEEPTurns the TV off automatically in
approximately 15, 30, 45, 60, 90,
or 120 minutes. Cancel by
pressing until SLEEP OFF
appears.
MTS/SAPCycles through the
Multi-channel TV Sound (MTS)
options: Stereo, Mono, and
Auto-SAP (Second Audio
Programming).
DISPLAYPress once to show current time,
(if set) and channel number.
Cycles through available Steady
Sound settings, (see page 23).
JUMPAlternates between the last two
channels selected with the
buttons.
GUIDEBrings up the custom guide of
your satellite receiver.
MENUDisplays the on-screen menu.
Press again to exit the menu at
any time.
RESETPress to return to factory settings
while in an on-screen menu.
CODE SETUse to program your remote
control to operate connected
video equipment, (see page 36).
For information on Picture in Picture (PIP) operation buttons, see page 17.
If you lost your remote control, see page 40.
0 9
Basic Functions
This section shows you how to use the more advanced buttons on the
remote control and how to use the on-screen menus.
Using the Remote Control
KV-34FS12T
— 12 —
/
The remote control shown (RM-Y171) is for KV-27FV16. Your remote control
may not look like the one illustrated.
ButtonDescription
POWERPress when you want to turn
FUNCTIONPress when you want to control
MUTINGInstantly turns off the sound.
SYSTEM
OFF
TV/VIDEOCycles through available video
ANTPress to change the VHF/UHF
TV/VTRPress when you are finished
PICTURE
MODE
14
connectedequipmentonandoff.
connected equipment with your
remote control.
Press again or pressto restore
sound.
Powers off all Sony equipment at
once, (may not work with older
equipment).
inputs.
input to the AUX input
(KV-27FS16, KV-27FV16,
KV-32FS16 only).
using a VCR and you want to
switch to the TV input. Your
VCR power will remain on.
Moves the cursor in the onscreen menus. Press the arrow
buttons to move the cursor. Press
the center button to select or
access an option.
Cycles through the available
Video Mode settings.
Page 13
Other Information
40
Operating Instructions
If, after reading these Operating Instructions, you have additional questions related to the use of your
Sony television, please call our Direct Response Center at 1-8 00-222-SONY (7669) (U.S. residents
only) or (416) 499-SONY (7669) (Can adian residents only).
Cannot receive
higher number
channels(UHF)
when using an
antenna
Make sure Cable is set to OFF in the Channel Setup
menu (page 25).
Perform Auto Program to add channels that are not
presently in the memory (page 16).
Cable stations
don’t seem to
work
Make sure Cable is set to ON in the Channel Setup
menu (page 25).
Perform Auto Program to add channels that are not
presently in the memory (page 16).
Remotecontrol
does not
operate
Batteries could be weak. Replace them (page 2).
Move the TV 3-4 feet away from fluorescent lights.
The TV needs
to be cleaned
Clean the TV with a soft dry cloth. Never use strong
solvents such as thinner or benzine, which might
damage the finish of the cabinet.
Lost password
for Parental
Control
In the password screen, enter the following master
password: 4357. After using the master password, you
must create a new password, it cannot be used to
unlock currently blocked channels.
You lost your
remote control
You can use the front A/V panel controls to acc e ss the
menu. Pressto open the menu. Use theor
buttons on the front A/V panel instead of the
F or
buttons on the remote control. Use thebutton on
the front A/V panel instead of the
G, g
,and
buttons on the remote control. Pressagain when
the setting or adjustment is complete. Contact your
nearest S ony dealer to order a replacement.
Cannot access
other menus
whenusing the
Basic Menu
If you use thebutton to close the Basic menu, only
the Basic menu appears when you pressagain. To
have access to the other menus, use the button to
select Advance Menu (page 35).
F
F
Troubleshooting
If you are having a problem with your TV, try the suggestions below. If
the problem persists, contact your nearest Sony dea ler.
— 13 —
No picture, no
sound
Poor or no
picture, good
sound
Good picture,
no sound
No color
No signal
Dotted lines or
stripes
Double images
or ghosts
Make sure the power cord is plugged in.
If red light is flashing on the front of your TV for more
than a few minutes, disconnect and reconnect the
power cord to restore the TV. If the problem continues,
call your local service center.
Check the TV/VIDEO settings: when watching TV, set
to TV; when watching video equipment, set to VIDEO
(page 14).
Make sure the batteries have been inserted correctly
into the remote control (page 2).
Try another channel, it could be station trouble.
Adjust Picture in the Video menu (page 22).
Adjust Brightness in the Video menu (page 22).
Check the antenna and/or cable connections (page 3).
Check your Audio settings. Your TV may be set to
Auto-SAP (page 24).
Adjust Color in the Video menu (page 22).
Check the Cable setting in the Channel Setup menu
(page 25).
Check the antenna and/or cable connections (page 3).
Make sure the channel selected is currently
broadcasting.
Adjust the antenna.
Move the TV away from other electronic equipment.
Some electronic equipment can create electrical noise,
which can interfere with TV reception.
Check your outdoor antenna or call your cable service.
KV-34FS12T
39
Page 14
KV-34FS12T
2-1. REAR COVER REMOV AL
SECTION 2
DISASSEMBLY
4 Screws
(+BVTP 4x16)
4 Screws (+BVTP 4x16)
4 Screws (+BVTP 3x16)
Rear Cover
4 Screws
(+BVTP 4x16)
2-2. CHASSIS ASSEMBL Y REMOVAL
Chassis
Assembly
Claw
2-3. SERVICE POSITION
CA Board
VA Board
MA Board
D Board
A Board
— 14 —
Page 15
2-4. PICTURE TUBE REMOVAL
WARNING:
BEFORE REMOVING
THE ANODE CAP
High voltage remains in the CRT
even after the power is disconnected.
T o avoid electric shock, discharge
CRT before attempting to remove the
anode cap. Short between anode and
CRT coated earth ground strap.
Coated
Earth
Ground
Strap
10
KV-34FS12T
1
9
8
7
6
5
4
2
3
1.Discharge the anode of the CRT and remove the anode cap.
2.Unplug all interconnecting leads from the deflection yoke, neck
assembly, degaussing coils and CR T grounding strap.
3.Remove the CA Board from the CR T .
4.Remove the chassis assembly.
5.Loosen the neck assembly fixing screw and remove.
6.Loosen the deflection yoke fixing screw and remove.
7.Place the set with the CR T face down on a cushion and remove
the degaussing coil holders.
8.Remove the degaussing coils.
9.Remove the CRT grounding strap and spring tension devices.
10. Unscrew the four CRT fixing screws [located on each CRT
corner] and remove the CRT [Take care not to handle the
CRT by the neck].
ANODE CAP REMOV AL
WARNING: High voltage remains in the CRT even after the power is disconnected. To avoid electrical shock, discharge the CRT before
NOTE: After removing the anode, short circuit the anode of the picture tube and the anode cap to either the metal chassis, CRT shield,
attempting to remove the anode cap. Short between anode and coated earth ground strap of CRT.
or carbon painted on the CRT.
REMOVAL PROCEDURES
c
b
a
Anode Button
1
Turn up one side of the rubber cap in
the direction indicated by arrow
2
a
.
Use your thumb to pull the rubber
cap firmly in the direction indicated
by arrow
b
.
3
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
.
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 fitting 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.
— 15 —
Page 16
KV-34FS12T
SECTION 3
SET -UP ADJUSTMENTS
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: ST ANDARD
PICTURE control: ................ Normal
BRIGHTNESS control: ........ Normal
3-1. 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.
Perform the adjustments in order as follows:
1. Beam Landing
2. Convergence
3. Focus
4. Screen (G2)
5. White Balance
Note: T est equipment required:
• Color Bar Pattern Generator
• Degausser
• DC Power Supply
• Digital Multimeter
5. Move the deflection yoke forward and adjust so that the entire
screen becomes green.
Purity Control
3. T urn 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
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.
Puritycontrol
correctsthisarea
Diskmagnetsorrotatablediskmagnetscorrect
theseareas(a-d)
b
d
cd
Deflectionyokepositioning
correctstheseareas
ba
a
— 16 —
c
Page 17
KV-34FS12T
3-2. CONVERGENCE
Before starting convergence adjustments:
1. Perform FOCUS, V.LIN AND V .SIZE 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
V .STAT RV701 to converge).
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. S tatic
convergence.
2. Rotate BMC magnet (b) to correct insufficient V. Static
convergence.
3. After adjusting the BMC magnet, repeat Beam Landing
Adjustment.
V.S TAT
BMC MAGNET
PURITY
2. T ilt the V.STAT magnet and adjust static convergence to open
or close the V.STA T magnet.
When the V.STA T magnet is moved in the direction of arrows
a and b, red, green, and blue dots move as shown below:
(1)
a
b
(2)
a
(3)
b
b
b
a
b
a
B
G
R
BGR
RGB
R
G
B
b
B
G
R
B
G
R
b
BMCmagnet
Dynamic Convergence Adjustment
Before performing this adjustment, perform Horizontal
and Vertical Static Convergence Adjustment.
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.
— 17 —
Page 18
KV-34FS12T
RGB
BGR
RGB
BGR
BGR
RGB
RGB
G
B
R
BGR
RGB
BGRRGB
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.TIL T
(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.
b
a
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.
RV701
V.STAT
CA
Board
VA
Board
TLH Plate
XCV
YCH
TLV
a-d:screen-corner
d
c
3-3. FOCUS
1. Adjust FOCUS control for best picture.
ba
misconvergencecd
B R R B
(R)(B) (B)(R)
TLH+
TLH-
(TLV)
Focus (FV)
Screen (G2)
— 18 —
Page 19
KV-34FS12T
r
3-4. SCREEN (G2)
1. Input a dots pattern.
2. Set the PICTURE and BRIGHTNESS controls at minimum
and COLOR control at normal.
3. Adjust SBR T , GCUT, BCUT in service mode with an
oscilloscope as shown below so that voltages on the red,
green, and blue cathodes are 170 ± 2.0 VDC.
4. Observe the screen and adjust SCREEN (G2) VR in FBT
to obtain the faintly visible background of dot signal.
3-5. METHOD OF SETTING THE SERVICE
ADJUSTMENT MODE
Service Mode Procedure
1. Standby mode (power off).
3-6. 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 SBR T if necessary .
5. Select GCUT and BCUT with
6. Adjust with
and for the best white balance.
7. Set PICTURE and BRIGHTNESS to maximum.
8. Select GDRV and BDR V with
9. Adjust with
and for the best white balance.
10. To write into memory, press
and .
and .
then .
2. Press
DisplayChannel
5
Sound volumePowe
+
on the Remote Commander (press each button within a
second).
Service Adjustment Mode In
1. The CR T 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 service adjustment mode.
Category
Mode
service defl hsiz16
Signal
ntsc
Type
vchp 00000000 00000000
Display
Item
write
Item
Data
— 19 —
Page 20
KV-34FS12T
SECTION 4
SAFETY RELATED ADJUSTMENTS
4-1.
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
1. Using a Variac, apply AC input voltage: 120 ± 2 VAC.
2. T urn 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 23.0 VDC.
Hold-Down Operation Confirmation
1. Connect the current meter between Pin 1 1 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 = 2175 + 100/- 325 µA.
3. Confirm the voltage of A Board TP-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. T urn DC power source off immediately .
7. Read the digital voltmeter indication
(standard < 27.24 + 0.0/- 0.1 VDC) .
8. Input a white signal and set PICTURE and BRIGHTNESS to
maximum: IABL = 2175 + 100/- 325 µA .
9. Repeat Steps 4 to 7.
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
T505
FBT
ammeter
3.0 mA DC
range
ABL
+
A
IABL
-
.
4-2. B+ VOLTAGE CONFIRMATION AND
ADJUSTMENT
Note: The following adjustments should always be performed
when replacing the following components, which are marked with
on the schematic diagram on the A Board.
A BOARD:IC601, PH601
1. Using a Variac, apply AC input voltage: 130 + 2.0/-0.0 V AC.
2. Input a monoscope pattern.
3. Set the PICTURE and BRIGHTNESS controls to minimum.
4. Confirm that the voltage of A Board TP-600 is <136.5 VDC.
5. If Step 3 is not satisfied, replace the components listed above,
then repeat Steps 1–3.
— 20 —
Page 21
11119
+
+
+
+
18
1818
9
5
6
C
9
5
6
C
9
5
6
9
5
C
6
C
R601
R601
R601R601
R615
R615
R615R615
D616
D616
D616D616
1
6
0
B
1
F
0
6
B
F
1
6
0
B
1
F
0
6
B
F
C624
C624
C624C624
H.DRIVE
H.DRIVE
H.DRIVEH.DRIVE
CN511
CN511
C611
C611
CN511CN511
C611C611
C654
C654
C654C654
CN506
CN506
CN506CN506
1111
1111
CN515
CN515
CN515CN515
+B
+B
+B+B
R515
R515
R515R515
C536
C536
C536C536
D521
D521
D521D521
4444
1111
5555
7777
R503
R503
R503R503
R516
R516
R516R516
C503
C503
C503C503
C554
C554
C554C554
R502
R502
R502R502
R547
R547R547
9
99
10
1018
1010
5
6
R
5
6
R
9
9
5
6
R
5
6
R
9
9
L602
L602
L602L602
C629
C629
C629C629
H.PULSE
H.PULSE
H.PULSEH.PULSE
FB503
FB503
FB503FB503
R507
R507
R507R507
T503
T503
T503T503
T502
T502
T502T502
Q501
Q501
Q501Q501
C504
C504
C504C504
R547
KV-34FS12T
POWER
SUPPLY
DIGITAL
MUL TIMETER
+
–
1SS119
+
–
R564
C546
R438
R438
R449
R449
R454
R454
R454R454
JR503
JR503
JR503JR503
R445
R445
R445R445
Q411
Q411
Q411Q411
D620
D620
D620D620
C524
C524
C524C524
R506
R506
R506R506
D506
D506
C510
C510
C510C510
L502
L502
T504
T504
T504T504
L509
L509
L509L509
C513
C513
C513C513
R504
R504
R504R504
L502L502
L505
L505
L505L505
C517
C517
C517C517
E
E
E
E
R505
R505
R505R505
C555
C555
C555C555
2
0
5
Q
2
0
5
Q
2
0
2
5
0
Q
5
Q
O
-
H
O
-
H
T
U
T
U
O
-
O
H
-
H
T
U
T
U
C505
C505
C505C505
C515
C515
C515C515
R553
R553
R553R553
D506D506
C550
C550
C550C550
C511
C511
C511C511
L501
L501
L501L501
B
B
B
B
B
B
B
B
C
C
C
C
C509
C509
C509C509
L510
L510
L510L510
R568
R568
R568R568
R449R449
C448
C448
C448C448
R450
R450
R450R450
R567
R567
R567R567
R565
R565
R565R565
IC501
IC501
IC501IC501
R522
R522
R522R522
R525
R525
R525R525
Q503
Q503
Q503Q503
R447
R447
R447R447
D507
D507
D507D507
FB502
FB502
FB502FB502
8888
1111
R527
R527
R541
R541
R541R541
R514
R514
R514R514
R527R527
B
B
E
E
BB
E
E
E
E
E
E
C525
C525
C525C525
5555
4444
3333
2222
1111
5
1
N
0
C
1
5
0
N
C
5
1
N
0
C
1
5
0
N
C
R546
R546
R546R546
R533
R533
R533R533
R534
R534
C551
C551
R534R534
C551C551
R438R438
C530
C530
C530C530
R529
R529
R529R529
5555
R573
R573
R573R573
R531
R531
R531R531
4444
C541
C541
C541C541
D510
D510
D510D510
6
6
66
R539
R539
R539R539
R518
R518
R518R518
7
7
77
R540
R540
R540R540
C543
C543
C543C543
C519
C519
C519C519
R537
R537
R537R537
D511
D511
D511D511
C552
C552
C552C552
R403
R403
R403R403
R563
R563
R563R563
C546
C546
C546C546
H.PROT
H.PROT
H.PROTH.PROT
C542
C542
C542C542
6
6
2
2
6
6
22
4
4
44
2
2
22
C518
C518
C518C518
IC502
IC502
IC502IC502
1
1
11
TH501
TH501
TH501TH501
R543
R543
R543R543
6
6
6
6
200V
200V
200V200V
6666
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 -
H DY +
H DY +
H DY +H DY +
H DY +
H DY +
H DY +H DY +
R545
R545
R545R545
L507
L507
L507L507
R225
R225
R225R225
D235
D235
D235D235
D234
D234
D234D234
C213
C213
C213C213
R218
R218
R218R218
R407
R407
R407R407
-13V
-13V
-13V-13V
HEATER
HEATER
HEATERHEATER
C211
C211
C211C211
Q205
Q205
Q205Q205
1
1
1
1
CN502
CN502
CN502CN502
Q206
Q206
Q206Q206
C523
C523
C523C523
R532
R532
R532R532
Q201
Q201
Q201Q201
D236
D236D236
D232
D232
D232D232
R232
R232R232
R511
R511
R511R511
R561
R561
R561R561
T505
FBT
135V
135V
135V135V
ABL11
R226
R226
R226R226
R227
R227
D236
R231R232
R231R231
D233
D233
D233D233
D514
D514D514
T505
T505
T505T505
R227R227
R231
D520
D520
D520D520
D518
D518
D518D518
D517
D517
D517D517
D514
C532
C532
C532C532
R558
R558
R558R558
R559
R559
JR502
JR502
JR502JR502
R559R559
R557
R557
R557R557
Q505
Q505
Q505Q505
R554
R554
R554R554
D516
D516
D516D516
R555
R555
R555R555
R535
R535
R535R535
JUMPER-ID
JUMPER-ID
JUMPER-IDJUMPER-ID
R801
R801
R801R801
R803
R803
R803R803
R804
R804
R804R804
CN504
CN504
CN504CN504
TP600
AMMETER
3mA dc range
A
+
–
Figure 1
— 21 —
Page 22
KV-34FS12T
r
ELECTRICAL ADJUSTMENTS BY REMOTE COMMANDER
Use the Remote Commander (RM-Y168) to perform the circuit adjustments in this section.
NOTE: T est Equipment Required:
• Pattern generator
• Frequency counter
• Digital multimeter
• Audio oscillator
SECTION 5
CIRCUIT ADJUSTMENTS
5-1. SETTING THE SERVICE ADJUSTMENT MODE
1. Standby mode (power off).
2. Press
DisplayChannel
5
Sound volumePowe
+
on the Remote Commander (press each button within a
second).
Service Adjustment Mode On
1. The CR T displays the item being adjusted.
2. Press or on the Remote Commander to select an item.
3. Press
4. Press
or on the Remote Commander to change the data.
then to save into the memory.
Service Adjustment Mode Memory
Display
Mode
Category
Item
Item
Data
5-2. MEMORY WRITE CONFIRMATION METHOD
1. After adjustment, remove the power plug from the AC outlet,
then plug it in again.
2. T urn the power switch ON and set to service mode.
3. Call the adjusted items again to confirm they were adjusted.
5-3. ADJUSTMENT BUTTONS AND INDICATORS
MUTING
1
4
POWER
DISPLAY
3
5
6
ENTER
service defl hsiz16
Signal
ntsc
Type
vchp 00000000 00000000
write
1. Press then on the Remote Commander to
initialize.
Display
Category
Mode
service defl hsiz16
Signal
ntsc
Type
vchp 00000000 00000000
Item
write
Item
Data
Carry out Step 1 when adjusting
IDs 0–6 and when replacing
and adjusting IC003.
2. Turn set of f then on to exit Service Adjustment Mode.
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.
— 25 —
Function
Mode
service id’s id519
Signal
Type
ntsc
Chip
M37280MK-00SP VERB.O
Version
ID
Number
00010011
Data
Page 26
KV-34FS12T
service micro disp 48
ntsc
vchp
Category
Display
Item
Mode
Item
Data
Signal
Type
8(0) 8(0)
5-4. 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 the A Board.
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
CN501pin
(V DY+) and ground on the A Board .
4. Check that V. Frequency shows 60 ± 4 Hz.
Drive (RDRV)
1. Input a color-bar signal and set the level to 75%.
2. In Standard mode, set PICTURE to maximum and COLOR
to minimum.
3. Activate the Service Adjustment Mode.
4. Set both GON and BON items. Using
the following values. Leave RON set to “1”.
Category
Mode
service video rdrv26
Signal
Type
ntsc
vchp
R ON:ON (1)
G ON:O F F (0)
B ON:O F F (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
92.5 ± 3 VDC.
and ; set each to
Item
8(0) 8(0)
Item
Data
Display
and for
Display Position Adjustment (DISP)
1. Input a color-bar signal.
2. Set to Service Adjustment Mode.
3. Select DISP with
4. Adjust values of DISP with
and .
and to adjust characters
to the center.
5. W rite to memory by pressing
then .
6. Check to see if the text is displayed on the screen.
Sub Bright Adjustment (SBRT)
1. Input a monoscope signal.
2. Activate the Service Adjustment Mode.
3. Set the PICTURE and BRIGHTNESS to minimum.
4. Select the SBR T item with
5. Adjust the values of SBRT with
and .
and to obtain a faintly
visible crosshatch.
6. Press
then to save into the memory.
Sub Hue, Sub Color Adjustment (CHUE, CCOL)
1. Input a color-bar signal.
2. Activate the Service Adjustment Mode.
3. Connect an oscilloscope probe to CA Board, CN705
.
Pin
4. Select the CHUE and CCOL item with
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 CCOL item, adjust the waveform with
and until the first and fourth bars show the same level
(V1 = V4 < 0.1 Vp-p).
V2V3
V1
and .
V4
8. Reset GON and BON values to “1”.
9. Reset Picture and Color to normal values:
10.Press
R ON:ON (1)
G ON:ON (1)
B ON:ON (1)
PICTURE: MAX
COLOR:CENTER
then to save into the memory.
7. Press then to save into the memory.
V. Size Adjustment (VSIZ)
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select the VSIZ item with
4. Adjust value of VPOS with and for the best vertical
center.
5. Press
then to save into the memory.
— 26 —
and .
Page 27
V. Center Adjustment (VPOS)
Perform this adjustment after performing H. Frequency
(Free Run) Check.
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select the VPOS item with
4. Adjust value of VPOS with
and .
and for the best vertical
center.
5. Press
then to save into the memory.
H. Center Adjustment (HPOS)
Perform this adjustment after performing H. Frequency
(Free Run) Check.
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select the HPOS item with
4. Adjust the value of HPOS with
horizontal center.
5. Press
then to save into the memory.
and .
and for the best
KV-34FS12T
V LINEARITY (VLIN)
V CORRECTION (SCOR)
PIN AMP (PAMP)
HORIZONT AL TRAPEZOID (HTRP)
V. Angle (VANG), V. Bow (VBOW), Upper pin
(UPIN) and Low Pin (LPIN) Adjustments
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select VANG , VBOW, UPIN, and LPIN with
4. Adjust with
5. Press
V ANGLE (VANG)
and for the best picture.
then to save into the memory.
and .
H. Size Adjustment (HSIZ)
1. Input a monoscope signal.
2. Activate the Service Adjustment Mode.
3. Select HSIZ with
4. Adjust with
5. Press
and .
and for the best horizontal size.
then to save into the memory.
V. Linearity (VLIN), V. Correction (SCOR),
Pin Amp (PAMP), and Horizontal Trapezoid
(HTRP) Adjustments
1. Input a crosshatch signal.
2. Activate the Service Adjustment Mode.
3. Select VLIN, SCOR, PAMP, and HTRP with with
4. Adjust with
5. Press
and for the best horizontal size.
then to save into the memory.
and .
V BOW (VBOW)
UPPER PIN (UPIN)
LOW PIN (LPIN)
Service Adjustment Mode Memory
1. Change the value of the DCOL item to “1”.
2. After completing all adjustments, press
Read From Memory
Mode
Category
service defl vbow 7
Signal
Type
ntsc
vchp
Display
Item
00000000 00000000
then .
Item
Data
Green
Red
ENTER
0
— 27 —
Page 28
KV-34FS12T
NOTES:
— 28 —
Page 29
NOTES:
KV-34FS12T
— 29 —
Page 30
KV-34FS12T
NOTES:
— 30 —
Page 31
BA5-889-BD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
1
2
3
4
5
1
3
2
4
6
1
2
1
2
3
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
3
4
7
8
9
1
0
1
2
3
4
5
1
2
3
4
5
6
7
8
1
2
3
4
1
2
3
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
1
2
3
4
12
34
V
L
R
S
1
2
3
4
1
2
3
4
5
7
8
9
10
11
12
14
15
16
17
13
18
1
2
4
3
1
2
3
4
5
6
1
2
3
4
5
1
2
3
1
2
3
1
2
3
4
5
6
7
8
1
2
3
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
7
8
CN460
J201
CN406
T604
D626
C636
PH600
T505
CN501
T603
T501
T504
CN506
CN2005
CN2006
CN2007
CN2008
CN4001CN2003
T503
CN901
CN902
CN904
CN301
CN450
CN402
CN602
CN603
CN604
CN801
CN800CN515
D605
VDR601
F601
T602
RY601
RY602
D622
R645
D2001
CN2001
S-VIDEO
4P
SRT
:STAND BY
PHOTOCOUPLER
FBT
D4SB60L-F
AC RECT
DGC RELAY
RELAY
AC POWER
D4SB60L-F
AC RECT
10k
VIDEO
MAIN1
ST LEDI-STEREN
SAP LEDI-SAP
MODEO-SAP
F MONOO-MONO
GND
MAIN2
AFT OUTAFT
RF AGC
AGC MUTE
AGC
Q101
9V
30V
5V
L OUT
DE-EM OUT
R OUT
MUTE
VOL-CTRL
Q410
C
Y
TV-L
TV-R
FRONT A/V
VIDEO
AUDIO
L
R
V2-L
V2-R
CLOCK
DATA
V1-R
V1-L
YUV-R
YUV-L
AUDIO
L
R
GND
9V
OUT-R
OUT-L
SPK R+
SPK R-
SPK L+
SPK L-
GND
GND
V1
VM
9V
E
NC
+B
VM
1
3
4
5
68
9
STANDBY CIRCUIT
D623
Q606
PROTECT
Q605
CONVERTER
SWITCH
Q608
STBY DRIVE
Q607
RELAY DRIVE
Q604
RELAY
DGC
DGC
DGC
DGC DRIVER
Q609
DGC
D
VIN
S
OCP/FB
+B
FV
G2
ABL
H
5
6
9
8
7
2
4
1
0
0
11
DF
HV
H OUT
Q502
H DRIVE
Q501
HD
HP
IN+1
EW
IN-1
PIN DRIVE
PIN OUT
Q504
Q503
O
U
T
1
I-HLDWN
OUT2
SW
Q506,507
IN+2
VD+
D
R
I
V
E
+
OUT
GND
I-PROT
REF
STBY 7.5V
VD-
D
R
I
V
E
-
ABL
DET-OUT
CONVERTER
IC601
5V REG
IC604
9V REG
IC603
ERROR AMP
IC602
IC501
V HOLD
CNTRL
V OUT
IC502
IR DETECT
IC2001
SPR
SPL
+
+
AC IN
TU101
MON-L
MON-R
VAR/FIX-R
VAR/FIX-L
H
E
A
T
E
R
6
SPSW
MONITOR
V3
9V
30V
5V
SET5V
SET9V
30V
9V
9V
+B
STBY 7.5V
CN502
V3-L
V3-R
PIP-L
IR(SENSOR)
POWER-SW
LED-TIMER
GND
V DY+
V DY-
H DY-
H DY-
H DY+
H DY+
YCBCR AUDIO
INPUT
VOL-CTRL
Q411
+B
VC1
VC2
IN2
IN1
OUT1+
OUT3-
OUT4+
OUT2-
AUDIO AMP
IC401
NC
VIDEO
AUDIO
L
R
J202
J203
REAR A/V
SET9VSET9V
J205
AUDIO
L
RJ402
REAR VAR/FIX
POWER-SW
GND
KEY-SW
SWITCHES
FUNCTION
POWER-SW
GND
KEY-SW
S2008
S2007
TP507
TP508
TP 506
AMP
VELOCITY
MODULATION
Q903
Q904
VM OUT
Q905
Q906
VM DRIVE
Q901
Q902
VM
9V
E
NC
+B
9V
VM
VM
E
E
QP+
QP+
QP-
QP-
VM
VM
E
E
QP+
QP-
QP-
QP+
DQP DRIVE
V
M
O
D
V
M
O
D
9
V
D
R
I
V
E
Q
P
D
R
I
V
E
Q808
QP H OUT
Q807
QPQPVM
VM
200V
AUDIO
Y-TO-YUV
CR
CB
GND
V DY(+)
V DY(-)
H DY(-)
H DY(+)
Y
PB
PR
J206
Y,PR,PB
INPUT
INPUT
INPUT
TV-L
TV-R
V2-L
V2-R
V1-R
V1-L
YUV-R
YUV-L
GND
9V
OUT-R
OUT-L
OUT-B
OUT-A
IN5
IN5A
IN2
IN2A
IN1
IN1A
IN3A
IN3
MON-L
MON-R
VAR/FIX-R
VAR/FIX-L
9V
V3-L
V3-R
LINEA
LINEB
IN4A
IN4
MUTE
NC
MUTE
Q430,431
BUFFER
Q432,433
AUDIO
PROCESSOR
IC404
SCL
SDA
GND
SCL
SDA
DGC
DGC
DGC
NC
OCP
Q505
SW
Q603
Q601,602
9V
V MOD
V MOD
9V DRIVE
QP DRIVE
135V
NC
GND
GND
HP
VD+
+B
9V
Q812IC803
IC802
DF-COMP
HPHP
Q811
Q801
Q803,804Q802
IC801
Q805,806
Q810Q809
QP DRIVE
SWBUFFER
BUFFER
SWBUFFER
V MOD
V MOD
9V
135V
NC
GND
GND
HP
VD+
+B
9V
CN802
11
DFDF
CN504
LOW BLOW B5V9V
LOW B
AUDIO
LOW B
VCC
+B
RECT
+B
RECT
LOW B
RECT
AUDIO
OUTPUT
(POWER SUPPLY)
(DEFLECTION)
(TUNER/IF)
(AUDIO)
(MTS)
(AUDIO PROCESSOR)
( )
(CONVERGENCE)
(KEY)
MUTE
NC
Y1
C1
SDAT
SET9V
30V
SET5V
SCL
STBY
+5V
V2(VIDEO2)
STBY +5V
KEY-SW
MENU-SW
KV-34FS12T
SECTION 6 DIAGRAMS
6.1 BLOCK DIAGRAM
A
B
C
D
E
F
G
H
— 32 —
— 33 —— 31 —
Page 32
KV-34FS12T
MEMORY
STBY+7.5VSTBY+5V
IC003
B
CN309
DAT
GND
CLK
B-CLK
CN002
FOR JIG
B-DAT
B-INT
GND
SPSW
VM
STBY 7.5V
C
CN003
I-PROT
RELAY
MUTE
GND
O-MON0
O-SAP
D
CN004
I-SAP
I-STEREN
MAIN 1
MAIN 2
AFT
AGC MUTE
3
2
1
1
2
3
4
9
8
7
STBY 7.5V
6
GND
5
4
DGC
3
HP
2
1
9
8
7
6
5
4
3
2
1
BUFFER
Q001
IO-BCLKN
IO-BDAT
I-BINT
Q002Q006
I-PROT
O-DGC
O-RELAY
O-MUTE
O-MONO
O-SAP
I-SAP
I-STEREN
I-AFT
O-AGCMUTE
I-RESET
I-HSYNC
I-BSC
O-OSC
I-SDAT
O-YMYS2/YM
O-OSDBLCK
O-R
O-G
O-B
STBY+5V REG
HSYNCH SEPBUFFER
X1001
IC002
RESET
Q365,082
DIG COMB
FILTER
IC302
T
T
N
I
A
N
A
L
C
S
U
U
I
D
O
O
K
S
Y
C
C
(TUNING CONTROL)
(Y/C/J)
CN302
CVBS4IN
VM OUT
Q375
HP
VM
HP PROTECTI-HP
SDA
SCLO-SCLN
DVD-YIN
DVDCR-IN
DVDCB-IN
1
Y-TO-YUV
2
CR
3
CB
4
GND
A
Y/C JUNGLE
R2IN
IC301
G2IN
B2IN
CONTROL
TUNING SYSTEM
IC001
SET9VSET9V
I-HLDWN
HD
GND
E
CN005
ABL
EW
VD+
VD-
MONITOR
V3
PIP-L
SDAT
SCL
F
CN006
SET5V
30V
SET9V
V1
GND
Y1
C1
LED
POWER-SW
IR(SENSOR)
G
CN001
MENU-SW
KEY-SW
STBY +5V
V2(VIDEO2)
GND
10
9
8
7
6
5
4
3
2
1
10
9
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
SET5V
30V
SET9V
BUFFER
STBY +5V
BUFFER
Q003
Q004
I-HLDWN
O-LED
I-POWER
I-RMCN
I-MENU
I-KEY
I-VPN
O-YUYSWYUYSW
BUFFER
Q310
BUFFER
Q349,358
Q359
I-CVIN
O-N/S
BUFFER
Q305
X301
Q350,351
Q352,355
BUFFER
Q302,354
Q369,370
BUFFER
VTIM
HD
ABLIN
EW
VD+
FSC-OUT
CVBS1IN
Y1
C1
MONOUT
COMB C
COMB Y
XTAL
VD-
CVBS3IN
CVBS2IN
AFCFI
IKIN
ROUT
GOUT
BOUT
H-VD
IK BUFFER
Q303
BUFFER
Q368
R,G,B OUT
Q387,388
Q389
CONVERG
Q356
(RGB DRIVE)
(CRT DRIVE)
N/S MUTE
Q700
2
N/S MUTE
Q701
CN303
1
IK
GND
2
R
3
B
4
G
5
GND
6
N/S
7
NS MUTE
8
H TRAP
9
CN705
NS MUTE
H TRAP
1
IK
GND
2
R
3
B
4
G
GND
5
6
N/S
7
8
9
IK
R IN
B IN
G IN
CRT DRIVE
IC702
NS IN
N/S DRIVE
IC1701
R OUT
B OUT
G OUT
4
CN706
CN701
CN704
KR 12
KB 10
KG 11
FOCUS
1
3
1G2
6
HEATER
N/S COIL -
N/S COIL +
PICTURE TUBE
H
G2FV
HV
BA5-889-BD
H
— 34 —— 36 —
— 35 —
Page 33
KV-34FS12T
DC Volume Control 1
Input 1
Positive Output 1
Negative Output 1
Power
Ground 1
Signal
Ground
TEMPERATURE
PROTECTION
STABILIZER
REF
V
P
V
I + i
I – i
+
–
4
3
1
+
–
13
11
7
5
DC Volume Control 2
Input 2
I + i
I – i
1
2
Positive Output 2
Negative Output 2
10
8
26
12
9
Power
Ground 2n.c.
6.2 CIRCUIT BOARD LOCA TIONS
HX Board
MA Board
K Board
6-3. PRINTED WIRING BOARDS AND
SCHEMA TIC DIAGRAMS
• All capacitors are in µF unless otherwise noted.
pF: µµF 50 WV or less are not indicated except for
electrolytic and tantalums.
• All electrolytics are 50V unless otherwise specified.
• Indication of resistance, which does not have one for
rating electrical power, is as follows:
Pitch: 5mm
Rating electrical power 1/4W (CHIP: 1/10W)
• All resistors are in ohms.
KΩ = 1000Ω MΩ = 1000KΩ
•
•
•: internal component
•
•
•
• All variable and adjustable resistors have characteristic
• The components identified by
• When replacing components identified by
• When replacing parts shown in the table below, be sure
: nonflammable resistor
: fusible resistor
: panel designation and adjustment for repair
: earth-ground
: earth-chassis
curve B, unless otherwise noted.
been carefully factory-selected for each set in order to
satisfy regulations regarding X-ray radiation. Should
replacement be required, replace only with the value
originally used.
necessary adjustments indicated. If results do not meet
the specified value, change the component identified
by
is achieved (refer to Safety Related Adjustments on
page 20).
to perform the related adjustments.
and repeat the adjustment until the specified value
:PSSTYROL
:PPPOLYPROPYLENE
:PTMYLAR
:MPSMET ALIZED POL YESTER
:MPPMETALIZED POLYPROPYLENE
:ALBBIPOLAR
:ALTHIGH TEMPERATURE
:ALRHIGH RIPPLE
HV HOLD-DOWN
(R564)
B+ VOLTAGE
CONFIRMATION
Note:
The components identified by shading and mark
are critical for safety . Replace only with the part
number specified.
The symbol (displayed on component side of
the circuit board) indicates fast operating fuse.
Replace only with fuse of the same rating as marked.
Les composants identifiés per un tramé et une
marque sont critiques pour la sécurité. Ne les
remplacer que par une piéce portant le numéro
spécifié. Le symbole indique une fusible a
action rapide. Doit etre remplacee par une fusible de
meme yaleur, comme marque.
• Items marked * are not stocked since they are
seldom required for routine service. Some delay
should be anticipated when ordering these items.
Les composants identifies per un trame et une marque
sont critiques pour la securite. Ne les remplacer
que par une piece portant le numero specifie.
34
28
29
20
18
30
31
21
22
32
27
26
25
23
24
33
10
5
2
4
3
REF. NO. PART NO.DESCRIPTIONREMARK
1
1X-4037-664-1BEZNET ASSY2-5
23-704-179-31EMBLEM (NO.9), SONY
34-075-658-01DOOR
44-047-464-01CATCHER, PUSH
54-075-657-01GUIDE, LED
64-068-982-02MULTI-BUTTON (TOP)
7*A-1372-817-A HX MOUNTED PC BOARD
81-529-498-11SPEAKER (13.1X6.2CM)
91-452-896-11COIL , NA ROTATION (RT200)
108-735-066-05CRT 34RSN(SDP)
118-451-499-21DY Y34RSA-X
128-453-007-41NA324-M4
13*A-1332-061-A CA (VAR) MOUNTED PC BOARD
14*A-1342-549-A VA (VAR) MOUNTED PC BOARD
154-053-005-01SPACER, DY
191-416-827-21COIL, DEGAUSSING
204-062-047-02PIECE A(110), CONV CORRECT
21*A-1343-874-A D (VAR) MOUNTED PC BOARD
22*A-1299-266-A A COMPLETE PC BOARD
The high-voltage leads associated with the FBT on this board
are not included and must be ordered separately. (See 29-31)
238-598-542-00TUNER, FSS BTF-WA412
24*A-1304-203-A MA (VAR) MOUNTED PC BOARD
251-766-374-11PLUG, F-PIN
261-792-874-11CORD, AC POWER(WITH CONNECTOR)
27*A-1380-632-A K (VAR) MOUNTED PC BOARD
281-453-338-11FBT ASSY NX-4600//X4J4(29-31)
291-251-374-13HV CAP ASSY
301-900-800-82FOCUS LEAD
311-900-803-50G2 LEAD
323-704-372-71HOLDER, HV CABLE
334-075-654-01COVER, REAR
341-500-586-11FILTER, CLAMP (FERRITE CORE)
— 58 —
Page 43
SECTION 8
ELECTRICAL PARTS LIST
KV-34FS12T
Note:
The components identified by shading
and mark are critical for safety. Replace
only with part number specified.
Note:
Les composants identifies per un trame et une
marque
les remplacer que par une piece portant le
numero specifie.
REF . NO.P ART NO.DESCRIPTIONREMARK
sont critiques pour la securite. Ne
The components identified by in this manual have
been carefully factory-selected for each set in
order to satisfy regulations regarding X-ray
radiation. Should replacement be required, replace
only with the value originally used.
• Items marked * are not stocked since they are
seldom required for routine service. Some delay
should be anticipated when ordering these items.
• All variable and adjustable resistors have
characteristic curve B, unless otherwise noted.
The high voltage leads associated with the FBT on this board are not
included and must be ordered separately. Order the following leads
when requesting this A Board:
The components identified by in this manual have been
carefully factory-selected for each set in order to satisfy regulations regarding x-ray radiation. Should replacement be required,
replace only with the value originally used.