Sony Trinitron KV-27EXR20 User manual

KV-27EXR20/27EXR2<
RM-Y103
SERVICE MANUAL
Television system
Channel coverage
Picture tube
Antenna
Input
Output
MICROFILM
American TV standards
VHF: 2 — 13
UHF: 14 — 69
Cable TV: 1 ~ 125
Microblack™ Trinitron® tube
27-inch picture measured
diagonally
28-inch picture tube measured
diagonally
75-ohm external antenna terminal for
VHF/UHF
VIDEO 1 and 2 IN
S VIDEO IN (4-pin mini DIN)
Y: 1 Vp-p, 75-ohms
unbalanced. sync negative
C: 0.286 Vp-p (Burst signal),
75-ohms
Video (phono jacks): 1 Vp-p,
75-ohms unbalanced,
sync negative
Audio (phono jacks): 500 mVrms
(100% modulation)
Impedance: 47 kilohms
VIDEO 2 OUT
Video (phono jack):
75-ohms unbalanced,
sync negative
Audio (phono jacks):
Impedance: 10 kilohms
M-Yi04
US Mo Gra
KV-27EXR20
Chassis No. SCC-D50E-A
KV-27EXR25
Chassis No. SCC-D50F-A
Canadian Model
KV-27EXR25
Chassis No. SCC-D61C-A
ANU-2 CHASSIS
| MODELS OF THE SAME SERIES
| _KV-27EXR20/EXR25_ |
KV-27EXR10/EXRI15
SPECIFICATIONS
AUDIO OUT (VARIABLE)
(phono jacks)
More than 408 mVrms at the
maximum volume setting (variable;
Impedance: 5 kiiohms
Speaker output 5Wx2
Power requirements 120 V AC, 60 Hz
Power consumption
Max. | Standby
KV-27EXR20 160 W 15W
KV-27EXR25 | 165 W
Supplied accessories
(KV-27EXR20)
Remote commander RM-Y103 with
2 size AA (R6) batteries (1)
(KV-27EXR25)
Remote commander RM-Y 104 with
2 size AA (R6) batteries (1)
Antenna connector (1)
Recommended accessories
U/V mixer EAC-66
Connecting cable
VMC-810/820S, YC-15 V/30 V
Video rack SU-275
Dimensions 659.0 X 594.3 X 508.5 mm
(W XH X D)
Weight 49.0 kg
Design
and
specifications
are
subject
to
change
without
~~ TRINITRON: COLOR TV
SONY.
6723

KV-27EXR20/27EXR25
RM-Y103 RM-Y104
TABLE OF CONTENTS
Section Title Page Section Title Page
1. GENERAL
1-1. Location of Controls ........ 4 4. SAFETY RELATED ADJUSTMENTS .........0.00 22
1-2. Presetting TV Channels .. 5
1-3. Watching TV Programs ..........cceeeecceeeseseeeeseeettsesenenes 6 5. CIRCUIT ADJUSTMENTS
1-4. Adjusting Picture and Sound quality «0.00... cee 6
1-5, Using Picture-in-Picture (KV-27EXR25 only) . ea 8 5-1. Electrical Adjustment by Remote Commander ............+ 26
1-6. Using the Universal Remote Commander .............:c0 10 52. A Board Adjustment .....0... ccc eee 28
1-7. Using the GUIDE Function (on-screen menu) ................ 11 5-3. P Board Adjustments (KV-27EXR25 only) 32
1-8. Enjoying other Useful Features .........ccccccseesseeeceeeeees 14
2. DISASSEMBLY 6. DIAGRAMS
2-1. Rear Cover Removal ......c ccc eecesescreteeseeseseseeseeseee 15, 624 <e Block: DiaQram 233 sdssed.cus0 aides atots eticads sietbaaenartteeatd 35
2-2. U Board Removal (KV-27EXR20) ....... cece eeeseeereeees 15 6-2. Circuit Boards Location ec eeeececesnteneesensesseeeeeeeenes 39
2-3. U Board and P Board Removal (KV-27EXR25).... ms 15 6-3. Schematic Diagrams and Printed Wiring Boards............ 39
2-4; Service Position scs.ivctaciiaininteciacsenuanaedtanesnies i RS o_ PES 1-1011 610) 50 | 0] (0) (ee 61
2-5. Picture Tube REMOval ......... ccc csecseesecseeteeeeseseetseeeeaes 16
a: EXPLODED VIEWS
3. SET-UP ADJUSTMENTS
7-1. Chassis ....... 62
3-1, Beam Landing ......ccececsceesesesesceceessececeerenentaveseteesesesetees 17. 7-2. Picture Tube 63
3-2. Convergence .... ae 18
323%. FOCUS 8.2 SatAos edie alias we 20
3-4. G2, White Balance Adjustments .......ceeceeeteeeeeeeees 20 8. ELECTRICAL PARTS LIST ....0.... cee 64
(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 A\ ON THE
SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS
LIST ARE CRITICAL TO 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 TO 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,
COURTCIRCUITER 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 RISQUE D'ELECTROCUTION
PROVENANT D'UN CHASSIS SOUS TENSION, UN
TRANSFORMATEUR D'ISOLEMENT DOIT ETRE UTILISE
LORS DE TOUT DEPANNAGE.
LE CHASSIS DE CE RECEPTEUR EST DIRECTENENT
RACCORDE A L'ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS ALA
SECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR
UNE MAPQUE A SUR LES SCHEMAS DE PRINCIPE, LES
VUES EXPLOSEES ET LES LISTES DE PIECES CONT D" UNE
IMPORTANCE CRITIQUE POUR LA SECURITE DU
FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES
COMPOSANTS SONY DONT LE NUMERO DE PIECE EST
INDIQUE DANS LE PRESENT MANUEL OU DANS DES
SUPPLEMENTS PUBLIES PAR SONY. LES REGLAGES DE
CIRCUIT DONT L'IMPORTANCE EST CRITIQUE POUR LA
SECURITE DU FONCTIONNEMENT SONT IDENTIFIES DANS
LE PRESENT MANUEL. SUIVRE CES PROCEDURES LORS
DE CHAQUE REMPLACEMENT DE COMPOSANTS
CRITIQUES, OU LORSQU'UN MAUVAIS FONCTIONNEENT
EST SUSPECTE.
125

KV-27EXR20/27EXR25
RM-Y104
RM-Y103
SAFETY CHECK-OUT
(US Model only)
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 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
cord
for
cracks
and
abrasion.
Recommend
the
replacement
of
any
such
line
cord
to
the
customer.
7. Check the condition of the monopole antenna (if any).
Make
sure
the
end
is
not
broken
off,
and
has
the
plastic
cap
on
it.
Point
out
the
danger
of
impalement
on
a
broken
antenna
to
the
customer, and recommend the antenna’s replacement.
8.
Check
the
B+
and
HV
to
see
they
are
at
the
values
specified.
Make
sure
your
instruments
are
accurate;
be
suspicious
of
your
HV
meter
if
sets
always
have
low
HV.
9. Check the antenna terminals, metal trim, “metallized” knobs,
screws,
and
all
other
exposed
metal
parts
for
AC
leakage.
Check
leakage as described below.
LEAKAGE
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
microampers).
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
instruments.
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
250
and
Sanwa
SH-63Trd
are
examples
of
a
passive
VOM
thatis
suitable.
Nearly
all
battery
operated
digital
multimeters
that
have
a 2V
AC
range
are
suitable.
(See
Fig.
A)
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
coldwater
pipe
with
an
ohmmeter.
The
reading
should
be
zero
ohms.
If
a
cold-water
pipe
is
not
accessible,
connect
a
60-100
watts
rouble
light
(no!
a
neon
lamp)
between
the
hot
side
of
the
receptacle
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
potental.
(See
Fig.
B)
To Exposed Metal
Parts on Set
0.1
5uF
Bau.
me voltmeter
(0.75V)
Earth Ground
Fig.
A.
Using
an
AC
voltmeter
to
check
AC
leakage.
|
Trouble Light
AC Outlet Box Memeter
Cold-water Pipe
Fig. B. Checking for earth ground.
Bene; pee

1-1. LOCATION OF CONTROLS
SECTION 1
GENERAL
aw aa cer i dC ‘é .
|
{
i |
| !
i t
| t
|
POWER button*
| |
|
CHANNEL +/~ buttons’
VOLUME +/- buttons*
|
TV/VIDEO button*
KV-27EXA20/27EXR20: SURROUND button*
KV-27EXR25: PIP button*
Remote control detector
STEREO indicator lamp
TIMER indicator lamp
“Buttons with the same function are
also located on the commander.
fear Pane
SPEAKER
woo“)
VHF D
VIDEO 2 IN and OUT
VIDEO 11N jacks (S VIDEO,
VIDEO/AUDIO)
VHF/UHF antenna terminal
SPEAKER terminals
AUDIO OUT
(VARIABLE) jacks
jacks
Universal Remote Commander
PIP/VTR (Picture-in-Picture or
video) selector ea
{KV-27EXR25 only)
VCR/Sony multi disc player
operation buttons ** aap
(KV-27EXR25 only)
**Function as buttons for the Picture-
in-Picture operations when PIP is
selected (See page 8).
Channel presetting buttons
MUTING button cs
CABLE button
Input select buttons (TV/VIDEO 1/2)
Channel number buttons
DISPLAY button
ENTER button
TIME button
MTS (multichannel TV sound)
button
SURROUND button”
(PIP button*)
Viera Mp
mao
eat | one.
RM-Y104 (103)
VTR 1/2/3/MDP (multi disc player)
~* selector
CODE SET button
~~ (Pre-Programmed function)
- SLEEP button
-_—- POWER button*
A/V WINDOW (audio and video
~~ adjusting) buttons
JUMP button
VOL (volume) +/—- buttons*
— --CH (channel) +/- buttons*
b="
PICTURE
+/-
buttons,
“Buttons with the same function
are also located on the TV.
Note: Model KV-27EXR25 also has a PIP
button on the TV, instead of a
SURROUND button.

1-2.
PRESETTING
TV
CHANNELS
o
Preset
Channels
Automatically
To
Preset
Only
Desired
Channels
or
to
Erase
Unnecessary
Channels
1 Press POWER on the TV or the
POWER
;
remote
commander
to
turn
the
Press
the
channel
number
button(s)
and
then
press
ENTER
TV
on.
to
select
the
channe!
you
want
to
add
or
erase.
1
2
3
be)
ea)
4
5
6
Press
CABLE
so
that
the
L
}
_)
_]
appropriate
mode
appears.
7
8
9
(ak.
Ga)
;
0
ENTER
Remote
CABLE
3
3
}
1
control
detector
To
add
channels
Press
ADD.
To
preset
VHF
or
UHF
To
preset
cable
TV
ADD
channels
channels
1
ff
“VIDEO
1”
or
“VIDEO
2”
is
displayed
on
the
screen,
press
the
TV/VIDEO
button
on
the
TV
or
the
TV
button
on
the
remote
commander
so
that
a
channel
number
appears.
3
Press
AUTO
PGM.
A
“+”
appears
before
the
number
for
a
moment.
This
channel
has
now
been
added
to
the
channel
scan
memory.
To
erase
channels
0
AUTO PGM
ooeooe
ren
2
Sino
2
Press
ERASE.
4.5
8
woe
AU
M
moomoo
cas
ERASE
a
ESET
aDOKD
aAaaeod
Savas
ooolNd
“AUTO
PROGRAM”
is
displayed
on
the
screen
and
receivable
channels
(other
than
the
channels
already
preset)
will
be
preset
in
A
‘'—"
appears
before
the
number
for
a
moment
numerical sequence. The channels previously preset remain in the
TV's memory.
When no more channels can be found, the programming stops and
the lowest numbered channel is displayed
This channel has now been erased from the channel scan memory.
The next time you press the CH +/- button, this channel will be
skipped.
Repeat steps 1 and 2 to add or erase other channels
Press
CH
+/—
to
check
or
view
:
.
preset
channels.
CAUTION
Cable
TV
channel
chart*
RM-Y104
When
a
VHF
or
UHF
channel
is
erased
Cable
TV
systems
use
letters
or
numbers
to
designate
Fe
bec
3)
4
2
The
cable
TV
channel
with
the
same
number
is
also
channels.
To
tune
in
a
channel,
refer
to
the
chart
erased,
and
vice versa.
below.
CH
:
a
ae
Number
on
this
TV
1
5
6
14
45
16
17
18
19
20
2t
22
2
24
2
2
27
28
29 30
Sad
le.)
:
(
Corresponding
CATV
channel
AB
AT
AB
A
8B
C
D
E—
F
GH
!
4¢
K
tL
M_
N
O
P
Qo
31
32
33
«34
«435 «636
«37:
«3839
93 94
95
96
97
98 99
100
101
102
123.
124
125
|
R
S
T
U
VW
Wet
WH2
W43
W457W458
AS
Ad
AQ
AQ
AT
W+59
W460
W461
W482
W
+83
W484]
Channels
that
can
be
received
To
add
channels
that
could
not
be
preset
automatically
because
their
Check
with
your
local
cable
TV
company
for
more
*This
designation
of
cable
TV
channels
conforms
to
the
on
this
TV:
signal
strength
was
too
weak,
or
to
erase
unnecessary
channels,
follow
the
complete
information
on
the
available
channels
EIA/NCTA
recommendation
VHF:
2—
13
steps
in
‘‘To
Preset
Only
Desired
Channels
or
to
Erase
Unnecessary
Le
wanies
a
UHF:
14
—
69
Channels.’
Cable: 1 — 125

1-3. WATCHING TV PROGRAMS
ENTER
Remote
4 3 1 control
detector
Te vNkO sOSTIOW SWAP
RM-Y 104
Press POWER on the TV or the
remote commander to turn the POWER
TV on.
2 Press CABLE so that the appropriate mode appears.
3 3
CABLE
To view VHF or UHF To view cable TV
channels channels
if “VIDEO 1" or “VIDEO 2” is displayed on the screen, press the
TV/VIDEO button on the TV or the TV button on the remote
commander so that a channel number appears.
3 Select a channel in one of the following two ways:
To scan the preset channels*
in numerical sequence, press
CH +/-.
To select a channel directly,
press the channe! number
button(s} and then ENTER
For example, to select channel
10, press 1, 0 and ENTER.
oo a Ren pes
3
Ea
CH 4 5 6
7 8 9
Ee Ca
i) ENTER
*For more on presetting Cc) Co)
channels, see p. 5.
<s
4 Press VOL + or — to adjust the volume.
To turn off the TV
Press POWER on the TV or the remote commander again
1-4. ADJUSTING PICTURE AND SOUND QUALITY
You can set different picture and sound quality levels for each input mode by changing the input mode
(TV/VIDEO 1/2) before setting. These settings will be retained even when you turn the TV off.
Adjusting the Picture
Input select
buttons
{TV/VIDEO 1/2)
~+ (Ry ~ (L)
VIDEO
—RESET
EXIT
RM-Y 104
Select the input mode you want to adjust with the TV/VIDEO
1/2 buttons.
TV VIDEO 1
VIDEO 2
Cee des
2 Press VIDEO.
VIDEO
av
a
Le
3 Press VIDEO repeatedly until the quality you want to adjust
blinks.
pl
a
Sr)
Press + (R) or — (L) to make the adjustment.
{R) {A)
L+| L+]
{L) (ty
L=| Ce
HUE hy HUE
nF 8 SG 6 :
rel mains
Picture
quality Press — (L) button Press + (R} button
HUE Skin tones become Skin tones become
purplish greenish
COLOR For tess color intensity For more color intensity
BRIGHT For less brightness For more brightness
SHARP For less sharpness For more sharpness
The display will disappear automatically after a few seconds.
The SHARP Control has no effect with a window picture.
(PIP function — KV-27EXR25 only)

NOTCH filter setting
Picture Contrast adjustment
Press VIDEO.
VIDEO
NOTCH OFF
Normally, set to NOTCH OFF.
If
dots
or
stripes
appear
while
you
are
watching
an
image
from
a
computer
or
video
source,
set
to
NOTCH
ON.
To set NOTCH To set NOTCH
filter ON. filter OFF.
(R)
Cel
iy
Cet =
NOTCH ON Ww NOTCH OFF
Press +. Press —
TRINITONE adjustment
Press to increase picture
C_)+ contrast with vivid color.
PICTURE
J Press to decrease picture
contrast with soft color.
Note
The picture contrast level cannot be stored under each
input mode.
To restore the factory (mid-level) settings
Press RESET.
RESET
Cod
The display will disappear after a few seconds.
Press VIDEO.
VIDEO
®
Color
picture
tubes
are
usually
manufactured
with
a
fixed
color
temperature
(tint)
that
determines
the
“warmth”
(red
tint)
or
‘‘cootness”’
(blue
tint)
of
the
picture.
With
Sony's
Trinitone
feature,
you
can
adjust
the
picture
color
to
your
preference.
TRINITONE HIGH
For bright white For soft white
(RA) (R)
Lidl
(L)
x)
TRINITONE HIGH
TRINITONE HIGH
The factory preset
whiteness level will
be restored.
C+]
(Y)
L=
a TRINITONE LOW
TRINITONE LOW
A touch of red will be
added to the white areas.
To restore the normal picture
Press EXIT.
RM-Y 104
Input select
buttons
(TV/VIDEO 1/2)
+ (RY (Ly
AUDIO
RESET
EXIT
Select the input mode you want to adjust with the TV/VIDEO
1/2 buttons.
Tv VIDEO 1 VIDEO 2
esl, «MES eed
CF
2? Press AUDIO.
AUDIO
3 Press AUDIO repeatedly until the quality you want to adjust
blinks.
AUDIO
a - |
4 Press + (R) or — (L) to make the adjustment
(A) (R)
Iai co
(Ly
= CA
os ") es
Sound
quatity Press — (L) button Press + (R) button
TREBLE To decrease treble To increase treble
response response
BASS To decrease bass To increase
response bass response
BALANCE To emphasize the left To emphasize the right
speaker’s volume speaker’s volume
The display will disappear automatically after a few seconds.

1-5. USING PICTURE-IN-PICTURE (KV-27EXR25 ONLY)
SFEAKER ON
Press AUDIO.
AUDIO
*) SPEAKER ON
(R
) ee!
Al
a)
SPEAKER ON
To use the speakers connected to the SPEAKER
terminals.
(A)
CF]
(Q
Le
tr) SPEAKER OFF
To use an audio system connected to the AUDIO
OUT jacks.
To restore the factory (mid-level) settings Picture-in-Picture reve) ols
Press RESET.
This function is included only with model
RESET KV-27EXR25.
Besides the main picture, you can watch a video
source simultaneously as a window picture.
———— PIP/VTR
For example, use Picture-in-Picture when you want to
PIP watch a TV program and also a video source from
—-—_— SWAP connected equipment (VCR, video disc player, etc.).
lf you connect a VCR, you can watch two different
TV programs at the same time.
The display will disappear atter a few seconds.
To restore the normal picture
Press EXIT.
Main picture
Window picture
RM-Y 104 Note
if the main picture is blocked, Picture-in-Picture does not
function. Press EXIT to cancel CHANNEL BLOCK.

To display a window picture — PIP
To swap the main and window pictures — SWAP
1
Set
the
PIP/VTR
selector
to
PIP.
PIP VTR
15
1 Set the PIP/VTR selector to PIP.
PIP VTA
{
2 Press PIP.
Input source made or TV channel
for the main picture
PIP
Ca
Input source mode or TV channel
for the window picture
A window picture will appear in the same mode as
the Jast time you used PIP.
Picture-in-Picture aiso functions when the main
picture is in the VIDEO mode.
To make the window picture disappear
Press PIP again.
To scan channels in the window picture
Press CH +/- on the remote commander.
To change the input mode of a window
picture
Press TV/VIDEO on the remote commander. Each
time you press this button, TV, VIDEO 1 or VIDEO 2
mode will be selected in sequence.
Notes on the sub picture
«You cannot hear the sound of the window picture
channel
elf a window picture is blocked, the “BLOCKED”
display will appear on the main screen.
2 Press PIP to display a window picture.
PIP
3 Press SWAP
SWAP. .. VIDEO 1
oC! 6
RM-Y 104
PIP/VTR
PIP
——~ POSITION
FREEZE
To change the position of the window picture — POSITION
1 Set the PIP/VTR selector to PIP.
PIP VTR
ne
2 Press PIP to display a window picture.
PIP
Press POSITION.
Each time POSITION is pressed, the window picture will move
counterclockwise on the screen as illustrated.
PIP

To freeze a window picture
1 Set the PIP/VTR selector to PIP.
PIP VTR
15
2 Press PIP to display a window picture.
PIP
Ca
Press FREEZE.
The window picture will freeze.
Use this feature when you want to write down the recipe of a
cooking program or a displayed toll free number, etc.
FREEZE
To restore the normal picture
Press FREEZE again.
Note
The broadcast will be progressing normatly while the still picture is
on the screen.
1-6. USING THE UNIVERSAL REMOTE COMMANDER
You can operate other video equipment that has an infrared remote detector with the supplied RM-Y104 or
RM-Y103 remote commander.
Operating Sony Video Equipme
With the supplied remote commander, you can operate Sony video
cassette recorders (Beta, 8 mm, VHS) and multi disc players by
following the steps below.
magi CAaaLe LEER POWER
re eC MAS.
noo
nooo
ooaoaod
aoa
ee CH VOL
ooo
2.
RM-Y 104
Caution
When you replace the batteries, do it
within approximately 30 minutes.
Otherwise, Sony settings and all of the
settings you made under the Pre-
Programmed function may
be erased.
Notes
elf you use only Sony video equipment
with your TV, you can operate that
equipment following the steps on this
page only. However, if you use other
makers’ video equipment as well as
Sony's, please foitow the steps instead
(Pre-Programmed function)
elf the video equipment does not have a
certain function, the corresponding
button on this remote commander will
not operate.
: 1 Set the PIP/VTR selector to VTR.
(KV-27EXR25 only)
za v
VTR
pan
f
id
Set the VTR 1/2/3/MDP selector according to the video
equipment you want to operate.
VIR 1-2-3 MDP
C it _o—
VHS VCR
_______ leas malin
If you want to operate a: set to:
Beta, ED Beta VCR VTR 1
8 mm VCR vTR2 |
Video disc player MDP
3 Use the video operating buttons to operate video equipment.
Operating a Video Cassette Recorder
To record
To play
To stop
To fast forward
To rewind the tape
To freeze a picture
To search the picture
forward and backward
Operating a Video Disc
To play
To stop
To freeze a picture
To search the picture
forward and backward
Press @.
Press >.
Press @.
Press >> |
Press <4.
Press Ml.
To resume normal playback, press again.
Keep pressing »& or <4 during playback.
To resume norma! playback, release the button.
Player
Press >.
Press @.
Press Of.
To resume normal playback, press again.
*This function is effective onty for CAV (standard-
play disc). With CLV (extended-play disc), the
projector will go into the standby mode if a
is pressed.
Keep pressing »® or <4 during playback
To resume normal playback, release the button.

Operating
Non-Sony
or
Sony
Video
Equipment
(Pre-Programmed
Function)
1
2
4
3
RM-Y104
Manufacturers and Code Numbers (VCR)
| MANUFACTURER CODE
SONY 01, 02, 03
EMERSON 22, 28, 30, 33
SHARP 13, 14
RCA 07, 08
HITACHI 07
FUNAI 29
MAGNAVOX 05, 06, 09
MITSUBISHI 18, 19, 26, 27
PANASONIC 05
GENERAL ELECTRIC 05
JVC 16
GOLDSTAR 25
TOSHIBA 20, 21
SYLVANIA 05, 06, 09
ZENITH 17
SANYO 41,15
QUASAR 05
NEC 16, 23, 31
PHILIPS 05, 06, 09
TOTE VISION 25
SAMSUNG 24, 32
SYMPHONIC 29
FISHER 10, 11, 12
TEKNIKA 28, 29
CANON 05
PHILCO 05, 06
SCOTT 21
MULTITECH 29
With the supplied remote commander, you can operate non-Sony
or Sony video equipment as shown below.
Example:
To
operate
an
RCA
video
cassette
recorder
when
you
set
the
VTR
1/2/3/MDP
selector
to
VTR
2.
Set the PIP/VTR selector to VTR.
(KV-27EXR25 only)
PI
P VTR
=)
id
2 Set the VTR 1/2/3/MDP selector to VTR 2.
VTR1~2 -3 MDP
You can use the VTR/1/2/3 settings, but not MDP.
By employing these three settings, you can use your remote commander to
operate up to 3 pieces of equipment
To use a Sony VTR, set the selector to a position not being used for your
Sony video equipment
While pressing CODE SET, press the number buttons for
your manufacturer's code number (see chart). For RCA,
press 0, 7 and ENTER.
CODE SET 0 7 ENTER
Ca! hy Lod
Now you can operate the video equipment with the supplied remote
commander.
Notes
elf more than one code number is listed, try entering them one by one,
until you come to the correct code for your equipment
*if you enter a new code number, the code number previously entered at
that setting will be erased.
4 Use the video operating buttons to operate video equipment.
1-7. USING THE GUIDE FUNCTION (on-screen menu)
The
GUIDE
function
calls
up
the
on-screen
menu,
giving
instructions
on
how
to
set
the
current
time,
TIMER
and CHANNEL BLOCK.
~——= GUIDE
—— +(R)/- (L)
~-— RESET
——— EXIT
ENTER
RM-Y 104
Setting the Clock
Example: To set the clock to 5:30 PM, Monday.
Press GUIDE.
Press repeatedly until the “CURRENT TIME SET” display
turns red.
GUIDE
GUIDE
CURRENT TIME SET
2 Press ENTER.
3 Press +/— until the desired day of the week appears.
aM ?
Press ENTER.
If the time is already set, the current set time will appear.
To clear these numbers, press any number.
ENTER
>
* Aji settings will be erased from the TV's memory if the TV is unplugged, or
if a power failure occurs.
*The ON/OFF TIMER and CHANNEL BLOCK will operate only if the clock
is set correctly.

Press 0 — 9 to set the desired time.
(For 5:30, press 0, 5, 3, 0.)
6 Press ENTER.
ENTER
a >
7 Press +/— to set AM or PM.
A >
EX
Press ENTER.
8 The moment ENTER is pressed, the clock will start.
A display will appear indicating that the clock has
been set, and will disappear after about 5 seconds.
ENTER
tl >
To restore the normal picture
Press EXIT.
To clear the current time setting
Display the “CURRENT TIME SET’ page and press
RESET, then EXIT.
To reset the setting
Display the “CURRENT TIME SET” page and press
RESET, then repeat steps 3 to 8.
To disptay the current time
Press TIME.
Notes
* The internal clock of this TV operates on a 12-hour cycle
If a 24-hour cycle number is entered, it will be cleared
when ENTER is pressed
12:00 AM stands for midnight
| 12:00 PM stands for noon
¢The internal clock returns to the factory-set condition if
the TV is unplugged, or if a power failure occurs. Reset
the current time
GUIDE
+ (RY/- ()
0-~9
ENTER
Setting the ON/OFF Timer
Set the ON/OFF timer to make the program of your choice appear
on the screen at the chosen time.
Example: Set the timer to turn on the TV to channel 8 at 1:00 PM,
for 3 hours every Monday through Friday.
Press GUIDE.
Press repeatedly until the ‘ON/OFF TIMER” display
turns red.
GUIDE
a
Press ENTER.
instructions for selecting the day appear.
(If the clock has not been set, “PLEASE SET CURRENT TIME
ato appears on the screen. Go back to page 11 — Setting the
jock.)
ENTER
>
EVERY SUN-SAT
3 Press +/— until the desired day of the week appears.
(R)
> EVERY MON-FRI
(Ly
H
Press ENTER.
instructions for setting the time appear.
ENTER
wy ?

Press 0 — 9 to set the desired time.
(For 1:00, press 0, 1, 0, 0.)
1 eee
(-C-()
C
L
Press a channel number button to set the
duration. (Up to 9 hours can be set.)
-! et vee
ee) Et ER
4 5 6
oo A)
=
7 8 9
C3. bes
@
6 Press ENTER.
“rh
-
7 Press +/— to set AM or PM.
8 Press ENTER.
1 0 Press ENTER.
ENTER
Ca] >
GUIDE
+ (AY - (LY)
0-9
1 1 Press 0 — 9 to set the desired channel
number.
Press ENTER.
The ON/OFF timer is set.
The TIMER indicator on the TV lights up.
RESET
EXIT
ENTER
RM-Y 104
To restore the normal picture
Press EXIT.
To clear the setting
Display
the
“ON/OFF
TIMER”
page
and
press
RESET,
then
EXIT.
To reset the setting
Display
the
“ON/OFF
TIMER”
page
and
press
RESET,
then
repeat
steps
3
to
12.
The
“TIMER
WILL
BE
OFF"
indication
wil!
appear
one
minute
before
the
timer
goes
off.
Notes
*
Power
back-up
is
not
available.
Both
the
clock
and
timer
settings
will
be
erased
if
a
power
failure
occurs.
Reset
the
current
time,
then
set
the
timer.
The selectable days will appear in the following order when you
press [+]:
Every Every Every
Friday Saturday Sun—Sat
Every
Wednesday
Thursday
Saturday Friday
Press [-—] to move in the reverse direction.

Setting CHANNEL BLOCK
CHANNEL BLOCK prevents a channel from appearing on the
screen during the preset time. We suggest you use this function to
prevent children from watching undesirable programs.
Example: Set CHANNEL BLOCK at 4:00 PM (for 1 hour), every
Saturday, on channel 12.
Press GUIDE.
Press repeatedly until the “CHANNEL BLOCK’”’ display
turns red.
GUIDE
>
Steps 2 ~ 11: Same as Setting the ON/OFF Timer.
(See page 12.)
1 2 Press ENTER.
CHANNEL BLOCK is set.
At the preset time, the picture of the selected channel will be
blocked from view and the sound will be muted. A red
“BLOCKED” display will appear on the screen while the
channel is blocked.
oy) >
To restore the normal picture
Press EXIT.
To clear the setting
Display the ‘CHANNEL BLOCK" page and press RESET, then EXIT.
To reset the setting
Display the “CHANNEL BLOCK” page and repeat the steps from the
beginning.
1-8. ENJOYING OTHER USEFUL FEATURES
RM-Y 104
MUTING
SLEEP
Muting the sound — MUTING
1. Press MUTING.
2. The display ““MUTING”’ will appear on the screen.
3. To restore the sound, press MUTING again, or press VOL +.
Keeping the channel displayed — DISPLAY
To DISPLAY the channel: Press DISPLAY
All the current displays will appear for a few seconds, then disappear.
The channel display will remain on the screen.
To CANCEL the display: Press DISPLAY again
The channel display will disappear.
Receiving a Multichannel TV Sound program — MTS
Each time you press MTS, the MAIN, SAP (Second Audio Program) and
MONO modes are selected in sequence. The display (in green) for each
mode will appear on the screen for a few seconds.
(NOTE: During SAP modes, the sound of non-SAP programs will be muted.)
TO LISTEN TO STEREO SOUND:
1. Press MTS to select the MAIN mode.
2. The MAIN display will appear on screen.
3. The STEREO indicator lamp on the TV will light up whenever a
stereo broadcast is received.
NOTE: A weak incoming signal may cause excessive noise with some
stereo broadcasts.
Switch to MONO mode to eliminate this noise.
Listening to surround sound — SURROUND
TO SET: (Gives a surround sound effect to stereo broadcasts and
external stereo sources)
1. Press SURROUND.
2. The ‘‘t-f-lt’' display will appear on the screen for a few
seconds.
TO CANCEL: Press SURROUND again. The ‘‘ til” display will
appear for a few seconds.
Using the sleep timer — SLEEP
TO SET: (Turns TV off automatically about 1 hour after setting)
1. Press SLEEP.
2. Agreen ‘SLEEP ON” display appears for a few seconds.
3. Ared ‘'SLEEP” display will appear 1 minute before the TV
shuts off.
TO CANCEL:
Press SLEEP again.
A green ‘SLEEP OFF" display appears for a few seconds.
OR
Turn the TV off. The sleep timer setting will be cancelled.
Switching quickly between 2 channels — JUMP
Each time you press the JUMP button, the channel which
appeared on the screen immediately before is recalled. Use this
feature to keep track of two programs alternately.

KV-27EXR20/27EXR25
RM-Y103 RM-Y104
SECTION 2
DISASSEMBLY
2-1.
REAR
COVER
REMOVAL
2-2.
U1
BOARD
AND
U2
BOARD
REMOVAL
(KV-27EXR20)
@
REAR
COVER
@ Remove U2 Board bracket
@® six screws
(BVTP4
x16)
Remove
U1
Board
to
connector
@ Remove U1 Board bracket
ju f f
@ Remove claw
® two screws
(BVTP4 x 16)
2-3.
U1
BOARD,
U2
BOARD
AND
2-4.
SERVICE
POSITION
P
BOARD
REMOVAL
(KV-27EXR25)
@® Remove U2
Board
bracket
@
Remove
P
Board
bracket
©) Remove U1 Board
to connector
@ Special screw
(+PW4 x 30)
@ Remove claw

KV-27EXR20/27EXR25 |
RM-Y103___—RM-Y104
2-5. PICTURE TUBE REMOVAL
® Four screws (PT)
© Picture tube shield
@) Chassis assy
@® Deflection yoke
@ Anode cap
b.
“CAUTION” Gushion
TO AVOID AN ELECTRIC SHOCK FROM CHARGED HIGH VOLTAGE OF PICTURE TUBE.
* REMOVAL OF ANODE-CAP
Short
circuit.the
anode
of
the
picture
tube
and
the
anode
cap
to
the
metal
chassis,
picture
tube
chield
or
carbon painted on the picture tube, after removing the anode.
* REMOVING PROCEDURES
{
: @)
Anode button
@
Turn
up
one
side
of
the
rubber
cap
in
@Using
a
thumb
pull
up
the
rubber
cap
@
When
one
side
of
the
rubber
cap
is
the
direction
indicated
by
the
arrow
@.
firmly
in
the
direction
indicated
by
the
separated
from
the
anode
button,
the
arrow
©).
anode-cap
can
be
removed
by
turning
up
the rubber
cap
and
pulling
up
it
in
the direction of th .
*
HOW
TO
HANDLE
AN
ANODE-CAP
Senta
gare
@M Don't hurt the surface of anode-caps with
sharp shaped material!
@ Don't press the rubber hardly not to hurt
inside of anode-caps!
A material fitting called as shatter-hook
terminal is built in the rubber.
@ Don’t turn the foot of rubber over hardly!
The shatter-hook terminal will stick out or
hurt the rubber.

®
The
following
adjustments
should
be
made
when
KV-27EXR20/27EXR25
RM-Y103 RM-Y104
SECTION 3
SET-UP ADJUSTMENTS
a
complete
realignment
is
required
or
a
new
picture
tube
is
installed.
These
adjustments
should
be
performed
with
rated
power supply voltage unless otherwise noted.
The control and switch below should be set as
follows unless otherwise noted:
PICTURE control :11+++7++++ To 80% (Full)
BRIGHTNESS control :-:::: RESET position
Perform
the
adjustments
in
order
as
follows:
1.
Beam
Landing
2.
Convergence
3.
Focus
4,
White
Balance
Note:
Test
Equipment
Required.
1.
Pattern
Generator
2.
Degausser
3. Digital multimeter
Preparation:
Set the side of the unit with the PICTURE
TUBE so that it faces east or west in order to
reduce the influence of external magnetic force.
3-1. BEAM LANDING
1.
2.
Input a raster signal with the pattern generator.
Loosen
the
deflection
yoke
mounting
screw,
and
set
the
purity
control
to
the
center
as
shown
in
Fig.2.
Turn the raster signal of the pattern generator
to green.
Move
the
deflection
yoke
backward,
and
adjust
with
the
purity
control
so
that
green
is
in
the
center
and
red
and
blue
are
at
the
sides
evenly.
(Fig.3)
Move the deflection yoke forward, and adjust so
that entire screen becomes green. (Fig.1)
Switch
over
the
raster
signal
to
red
and
blue
and
confirm
the
condition.
When
the
position
of
the
deflection
yoke
is
determined,
tighten
it
with
the
deflection
yoke
mounting
screw.
When landing at the corners is not right, adjust
by using the disk magnets. (Fig.4)
purity control
Fig. 2 Fig. 3
Disk magnets or
rotatable disk
magnets correct
these areas (a-d).
=,

KV-27EXR20/27EXR25
RM-Y103__- RM-Y104
3-2. CONVERGENCE 4, When the V.STAT magnet is moved in the
Preparation direction of arrow @ and @) red, green and blue
@ Before starting, perform FOCUS, H.SIZE, V.LIN dots move as shown below.
and V.SIZE adjustments. @ . ® ® ®
@ Set BRIGHTNESS control to minimum. / S 24 B { 8
@ Feed in dot pattern. G ——G
R f R
(1) Horizontal and Vertical Static Convergence
Center dot
RV701
G2(SCREEN)
FOCUS
1. Adjust H.STAT VR to converge red, green and
blue dots the in center of the screen. (Horizontal
movement)
de. Ediust WiGT 2 TE mmagnetto converge med, presn If the blue dot do not converge with red and green
and blue dots in the center of the screen. dots; perform. following steps
@ HMC and VMC correction for BMC (Hexapcle)
Magnet
(Vertical movement)
3. Ifthe red, green and blue dots do not converge in
the center of the screen with H.STAT VR,
perform horizontal convergence adjustment using
H.STAT VR and V.STAT magnet as shown
below. (In this case, HSTAT VR and V.STAT
magnet effect each other.)
@ Tilt the V.STAT magnet and adjust static
convergence to open or close the V.STAT magnet.
1. HMC (Horizontal Mis-convergence) correction
and motion of the Electron Beam with the BYAC
Magnet.
HMC correction (A) HMC correction (B)
A>BR G& 8B
46

KV-27EXR20/27EXR25
RM-Y103 RM-Y104
2. VMC (Vertical Mis-convergence) correction and
motion of the Electron Beam with the BMC Magnet.
Purity
VMC
correction
(A)
VMC
correction
(B)
V.STAT
magnet
BMC (Hexapole) magnet
A \
A
B
‘ SS
B
c<D
C=
c>Dd
c=D
o
R R
cLe jy?
ot G* j-°
B +OB
(2) Dynamic Convergence Adjustment
Perpartion :
e
A
YY
7
Before starting perform Horizontal and Vertical 3.
Move the deflection yoke for best convergence as
Static convergence adjustment.
shown below.
1. Slightly loosen deflection yoke screw.
Tighten the deflection yoke screw.
2. Remove deflection yoke spacers.
Install the deflection yoke spacers.
Yoke screw 8 GRRG8B
OrFO-40 OF O~0
R G BBG AR
Or Oe OF OO
4g

KV-27EXR20/27EXR25
RM-Y103
RM-Y104
(4) Screen-corner Convergence
a-d: screen-corner
misconvergence
Affix a Permalloy ass’y corresponding to the
misconverged areas.
d
Permalloy assembly
3-3. FOCUS
1. ‘Tune in an off-air signal.
2. PICTURE control to 80%.
3. Adjust the focus VR on A board so that the
focus at the center of the screen is optimum.
A magenta ring will appear if the focus is
adjusted only in the center of the screen.
Adjust evenly throughout the entire screen.
_
FOCUS
3-4. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENTS
1. G2 (SCREEN) ADJUSTMENT(RV701)
Set the PICTURE and BRIGHTNESS to normal.
Confirm G1 voltage is within 30.0+5V.
Apply DC voltage of 180V to the cathodes of R,
G and B from DC stabilized power source.
While watching the picture, adjust the G2 control
(RV701) to the just the retrace line disappears.
(Using the Remote Commander)
2. WHITE BALANCE ADJUSTMENTS
1)
2)
3)
4)
5)
6)
9)
1)
2)
3)
4)
Set to service mode.
Press [VIDEO |— [RESET] to normal and if
“TRINITONE” set to “LOW” by [+
necessaries
or [=] .
Input an entire white signal.
Set the PICTURE to minimum.
Select S BRT with /1| and |4] , and then set the
level to minimum with |3] and ie}
Select G CUT and B CUT with[l|and [4].
And adjust the level with |3) and (6 for the best
white balance.
Set the PICTURE to maximum.
Select G AMP and B AMP with 1 and 4, and
adjust the level with |3| and ig] for the best white
balance.
Write into the memory by pressing |MUTING|—
then
3. SUB BRIGHT ADJUSTMENT
Set to service mode.
Input a staircase signal of black and white from
the pattern generator.
BRIGHTNESS --- RESET
PICTURE -:::--+- minimum
Select S BRT with [i] and [4] , and adjust SUB
BRIGHT level with [3] and [6] so that the stripe
second from the right is dimly lit.
white
— 20—
second from the right
f
black