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KV-32V68/35V68
TRINITRON® COLOR TV
MODEL
DEST.
COMMANDER
CHASSIS NO.
KV-32V68
U.S.
RM-Y154
SCC-S07G-A
KV-32V68
CND
RM-Y154
SCC-S08J-A
KV-35V68
U.S.
RM-Y154
SCC-S07J-A
KV-35V68
CND
RM-Y154
SCC-S08L-A
KV-35V68
SERVICE MANUAL
CHASSIS
AA-2D
RM-Y154


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KV-32V68/35V68
SPECIFICATIONS
Television system
American TV standard, NTSC
Channel coverage
VHF:2-13 / UHF:14-69 / CATV:1-125
Picture tube
Trinitron® tube
Visible screen size
32-inch picture measured diagonally (KV-32V68)
35-inch picture measured diagonally (KV-35V68)
Actual screen size
34-inch picture measured diagonally (KV-32V68)
37-inch picture measured diagonally (KV-35V68)
Antenna
75 ohm external antenna terminal for VHF/UHF
Supplied accessories
Remote control RM-Y154
Battery size AA (R6) w/2
IR Blaster
Optional accessories
Connecting Cables:
RK-74A, RK-G69HG
VMC-10HG/30HG, VMC-720M,
VMC-810S/820S, YC-15V/30V,
TV Stand: SU-32A3, SU-35A3
VHF/UHF Mixer: EAC-66
Design and specifications are subject to change without notice.
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)
500 mVrms (100% modulation), Impedance: 47 kilohms
4) More than 408 mVrms at the maximum volume setting (variable)
More than 408 mVrms (fix); Impedance (Output): 2 kilohms
KV-32V68
KV-35V68
Power requirements
120V, 60Hz
120V, 60Hz
Number of inputs/outputs:
Video 1)
33
S Video 2)
22
Audio 3)
33
Audio Out 4)
11
Monitor Out
1
1
TV Out 1) 3)
11
S-Link
3
3
G-Link (IR Blaster)
1
1
Speaker output (W)
10W x 2
10W x 2
Power Consumption (W):
In use (max.)
200W
230W
In standby
8W
8W
Dimensions (W/H/D):
(mm)
821 x 675.3 x 587 mm
920 x 730.8 x 641.8 mm
(in.)
323/8 x 265/6 x 231/2 in
361/4 x 283/4 x 251/4 in
Mass:
(kg.)
70 kg
93 kg
(lbs.)
154 lbs
205 lbs
(
) ® SRS (SOUND RETRIEVAL SYSTEM)
The (
) SRS (SOUND RETRIEVAL SYSTEM) is manu-
factured by Sony Corporation under license from SRS Labs,
Inc. It is covered by U.S. Patent No. 4,748,669. Other U.S.
and foreign patents pending.
The word `SRS' and the SRS symbol (
) are registered
trademarks of SRS Labs, Inc.
BBE and BBE symbol are trademarks of BBE Sound, Inc.
and are licensed by BBE Sound, Inc. under U.S. Patent
No. 4,638,258 and 4,482,866.


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KV-32V68/35V68
1.
GENERAL
Connecting and Installing the TV ............................................ 5
Setting Up the GuidePlus+TM Feature ................................... 7
Using the GuidePlus+TM Feature ........................................... 8
Operating Video Equipment ................................................... 13
Troubleshooting ..................................................................... 13
2.
DISASSEMBLY
2-1. Rear Cover Removal ...................................................... 14
2-2. Chassis Assembly Removal ........................................... 14
2-3. Service Position .............................................................. 15
2-4. Control Switch Removal ................................................. 15
2-5. Picture Tube Removal/Anode Cap Removal .................. 16
3. SET-UP ADJUSTMENTS
3-1. Beam Landing ................................................................. 17
3-2. Convergence ................................................................... 18
3-3. Focus .............................................................................. 19
3-4. Screen (G2) ..................................................................... 19
3-5. White Balance Adjustments ............................................ 19
4. SAFETY RELATED ADJUSTMENTS ................................... 20
5. CIRCUIT ADJUSTMENTS ..................................................... 21
TABLE OF CONTENTS
6. DIAGRAMS
6-1. Block Diagram ................................................................. 27
6-2. Block Diagram ................................................................. 31
6-3. Circuit Boards Location ................................................... 34
6-4. Printed Wiring Boards and Schematic Diagrams ............ 34
·
A Board PWB (KV-32V68) .......................................... 35
·
A Board PWB (KV-35V68) .......................................... 37
·
A Board Schematic Diagram ....................................... 39
·
AV Board ..................................................................... 43
·
B Board ....................................................................... 43
·
C Board ....................................................................... 45
·
G Board ....................................................................... 47
·
HS Board ..................................................................... 47
·
HV Board ..................................................................... 47
·
K Board ........................................................................ 51
·
KG Board ..................................................................... 52
·
P Board ........................................................................ 53
·
UV Board ..................................................................... 55
·
WA Board ................................................................... 59
·
WB Board .................................................................... 59
6-5. Semiconductors ............................................................... 61
7. EXPLODED VlEWS
7-1. Chassis ............................................................................ 62
7-2. Picture Tube ..................................................................... 63
(KV-32V68)
7-3. Picture Tube ................................................................... 64
(KV-35V68)
8. ELECTRICAL PARTS LIST
·
Parts Listings ............................................................. 65
CAUTION!
AFTER REMOVING THE ANODE, SHORT CIRCUIT THE ANODE
OF THE PICTURE TUBE AND THE ANODE CAP TO THE METAL
CHASSIS, CRT SHIELD, OR CARBON PAINTED ON THE CRT.
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 OPERATION
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 PAR SONY. LES REGLAGES DE CIRCUIT DONT L'IMPORTANCE EST CRI-
TIQUE 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.
WARNINGS AND CAUTIONS
Section
Title
Page
Section
Title
Page


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KV-32V68/35V68
SAFETY CHECK-OUT
After correcting the original service problem, perform the
following safety checks before releasing the set to the
customer:
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampere).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers' instructions to
use these instructions.
2. A battery-operated AC milliammeter. The Data Precision
245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of
a VOM or battery-operated AC voltmeter. The "limit"
indication is 0.75 V, so analog meters must have an accurate
low voltage scale. The Simpson's 250 and Sanwa
SH-63Trd are examples of passive VOMs that are suitable.
Nearly all battery operated digital multimeters that have a
2V AC range are suitable. (See Fig. A)
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 contact 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.
HOW TO FIND A GOOD EARTH GROUND
A cold-water pipe is guaranteed earth ground; the cover-plate
retaining screw on most AC outlet boxes is also at earth ground.
If the retaining screw is to be used as your earth-ground, verify
that it is at ground by measuring the resistance between it and a
cold-water pipe with an ohmmeter. The reading should be zero
ohms. If a cold-water pipe is not accessible, connect a 60-l00 watts
trouble light (not a neon lamp) between the hot side of the re-
ceptacle and the retaining screw. Try both slots, if necessary, to
locate the hot side of the line, the lamp should light at normal
brilliance if the screw is at ground potential. (See Fig. B)
To Exposed Metal
Parts on Set
Fig. A. Using an AC voltmeter to check AC leakage.
Fig. B. Checking for earth ground.
Cold-water Pipe
Ohmmeter
AC Outlet Box
Trouble Light
Earth Ground
0.15 F
µ
1.5 k
AC
Voltmeter
(0.75 V)


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KV
-32V68/35V68
SECTION 1
GENERAL
The instructions mentioned here are partial abstracts from the Operating Instruction Manual. The page numbers shown reflect those of the Operating Instruction Manual.
Using This Manual
Precautions
Welcome!
Thank you for purchasing the Sony Trinitron®
Color TV. Before reading this manual, check the
model number located on the front of this
manual or on the rear of your TV.
The menus shown in this manual are for model
KV-35V68. Your menus may differ from the ones
illustrated.
The features you will enjoy include:
· The GUIDE Plus+ interactive program guide
system, which allows you to access program
information in an on-screen program guide,
sort programs by category, and to quickly
schedule programs for viewing or recording.
This service is yours with no monthly fee.
· Dual tuner PIP, which allows you to watch
two programs at once without having to
connect any additional equipment
· SRS, which allows you to listen to stereo
programs in dynamic three-dimensional
sound
· The FAVORITE CHANNEL feature, which
allows you to preview each of your chosen
favorite channels in a small window picture
before you choose to tune to a particular
station
· A front A/V input, for easy connection of
your camcorder or game equipment
· An S Video input, for enhanced picture
quality
This manual is divided into five major sections.
We recommend that you review the contents of
each section in the order presented.
1 Connecting and Installing the TV
This section guides you through your initial
set up.
2 Basic Set Up
This section teaches you the basic skills
needed to operate your new TV. It shows
you how to operate special functions of the
remote control and the GUIDE Plus+ feature.
3 Using your New TV
This section shows you how to use the Easy
Set Up Guide feature, and how to use your
remote control.
4 Using your Menus
This section teaches you how to access
on-screen menus and adjust your TV's
settings.
5 Troubleshooting
This section helps you to correct problems
you may encounter with your TV.
Instructions in this manual are written for the
remote control. Similar controls may be found on the
TV console.
Safety
· Operate the TV only with 120 V AC .
· The plug is designed, for safety purposes, to
fit in the wall outlet only one way. If you are
unable to insert the plug fully into the outlet,
contact your dealer.
· If any liquid or solid object should fall inside
the cabinet, unplug the TV immediately and
have it checked by qualified personnel before
operating it further.
· If you will not be using the TV for several
days, disconnect power by pulling the plug
itself. Never pull on the cord.
Fordetailsconcerningsafetyprecautions,seethe
suppliedleaflet"IMPORTANTSAFEGUARDS".
Note
· After you plug the TV back in, you must wait 24
hours before information will be available in the
Program Guide.
Installing
· To prevent internal heat buildup, do not
block the ventilation openings.
· Do not install the TV in a hot or humid place,
or in a place subject to excessive dust or
mechanical vibration.
2
Cable or antenna only
3
Cable and antenna
3
Cable box
4
Cable box and cable to view scrambled channels
4
VCR and cable or antenna
5
VCR and cable box
5
Direct Broadcast Satellite Receiver (DBS)
6
VCR and Direct Broadcast Satellite Receiver (DBS)
6
Digital Versatile Disc player (DVD)
7
Audio system
7
A/V receiver
8
Two VCR's for editing
8
Camcorder to view tapes
9
IR Blaster Cable* (G-Link)
9
S-Link connections
10
Making Connections
Connecting and Installing the TV
Refer to the table below, it will direct you to the diagram suitable to the components you will be
connecting.
If you will be connecting
See page
* IMPORTANT
· You must connect the IR Blaster in
order to operate your VCR and/or
cable box with the GUIDE Plus+
feature.
Note
· When using the IR Blaster and a cable box, the
cable box must always be left ON to allow
GUIDE Plus+ to receive information about
upcoming television programs.
4
Connecting and Installing the TV (continued)
Cable box
CATV cable
OUT
IN
(Rear of TV)
VHF/UHF
TO CONVERTER
Cable box
VHF/UHF
(Rear of TV)
AUX
75-ohm coaxial cable
(not supplied)
CATV cable
(unscrambled channels)
(signal)
scrambled
channels
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 discussed on page 31.
Cable Box Connections
You must connect the IR Blaster in order to operate your
cable box with the GUIDE Plus+ feature. (see
"Connecting the IR Blaster" on page 9)
Some pay cable TV systems use scrambled or encoded
signals that require a cable box to view all channels.
Cable box
1 Connect the coaxial connector from your cable to
the IN on your cable box.
2 Using a coaxial cable, connect OUT on your cable
box* to VHF/UHF on your TV.
Cable box and cable
For this set up, you can switch between scrambled
channels (through your cable box*), and normal (CATV)
channels by pressing ANT on your remote control.
Notes
· The GUIDE feature will not function for items
connected to the AUX input.
· When using PIP, you cannot view the AUX input
(scrambled channels) in the window picture.
· If you are using a cable box with the GUIDE Plus+
feature, when viewing PIP the same picture will be
displayed in the main and window picture. (see
page 25)
* When using the IR Blaster and a cable box, the
cable box must be left ON at all times to allow
the GUIDE Plus+ feature to receive information
about upcoming television programs.
5
AUDIO R AUDIO L VIDEO
S VIDEO
LINE
OUT
OUT
IN
OUT
IN
IN
VIDEO 1 VIDEO 3
OUT
MONITOR AUDIO
(VAR/FIX)
TV
VIDEO
S VIDEO
L
R
(MONO)
AUDIO
S-LINK
AUX
TO
CONVERTER
VHF/UHF
S-LINK
G-LINK
AUDIO R AUDIO L VIDEO
S VIDEO
LINE
OUT
OUT
IN
IN
VIDEO 1 VIDEO 3
OUT
MONITOR AUDIO
(VAR/FIX)
TV
VIDEO
S VIDEO
L
R
(MONO)
AUDIO
S-LINK
AUX
TO
CONVERTER
VHF/UHF
S-LINK
G-LINK
VCR Connections
You must connect the IR Blaster in order to operate
your cable box with the GUIDE Plus+ feature.
Connecting an antenna/cable TV
system with a VCR
1 Attach your cable or antenna to IN on your VCR.
2 Using A/V connectors, connect AUDIO and VIDEO
OUT on your VCR to AUDIO and VIDEO IN on
your TV.
*
3 Using a coaxial connector, connect OUT on your
VCR to VHF/UHF on yourTV.
* If you are connecting a monaural VCR, connect only the
single white audio output to the left input on your TV.
Connecting a VCR and TV with a
cable box
1 Attach your cable to IN on your cable box.**
2 Using a coaxial connector, connect OUT on your
cable box to IN on your VCR.
3 Using a coaxial connector, connect OUT on your
VCR to VHF/UHF on your TV.
4 Using A/V connectors, connect AUDIO and VIDEO
OUT on your VCR to AUDIO and VIDEO IN on
your TV.
** When using the IR Blaster and a cable box, the
cable box must be left ON at all times to allow
the GUIDE Plus+ feature to receive information
about upcoming television programs.
Notes
· To record programs using VCR Plus+, your VCR
must be set to channel 3 or 4, preferably the channel
which does not receive a broadcast channel in your
area.
Coaxial cable
(Rear of TV)
VMC-810S/820S
(not supplied)
Cable
VCR
3
1
2
AUDIO-R (red)
AUDIO-L (white)
VIDEO (yellow)
Cable box
3
AUDIO-R (red)
AUDIO-L (white)
VIDEO (yellow)
VCR
Cable
Coaxial cable
2
1
(Rear of TV)
VMC-810S/820S
(not supplied)
For optimum picture quality, use S VIDEO
instead of the yellow A/V cable. S Video does
not provide sound, your audio connectors
must still be connected.
For superior picture quality, use an A/V cable
instead of the VHF/UHF connection.
4