Sony TRINITRON KV-9400 User manual

Television System:
Color System:
Picture Tube:
Semiconductors:
Antennas:
Channel Coverage:
Intermediate Frequencies:
Sound Syster
SPECIFICATIONS
American TV standards
NTSC
22
cm,
9"
(screen
measured
diagonally),
90° deflection TRINITRON system
22 transistors, 1 FET, 8 ICs and
39 diodes
VHF: 300 @ balanced
75
Q
unbalanced
(telescopic
antenna)
(including slide switch)
UHF:
300
&
balanced
(loop
antenna*)
“Note:
Supplied
with
accessories
VHF channels: 2 —13
UHF channels: 14 — 83
{a total of up to 14 preselected channels)
Picture i-f carrier: 45.75 MHz
Color subcarrier: 42.17 MHz
Sound i-f carrier: 41.25 MHz
4.5 MHz intercarrier
Output power: 1W (max.)
Speaker:
8
x
12
cm
(3'/s
x
4%
inches)
oval, 8 2
— Continued on page 2 —
US Model
Chassis No. SCC-274A-A
TRINITRON®
COLOR TV
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
CON-
NECTED 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
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
PRO-
CEDURES
WHENEVER
CRITICAL
COMPONENTS
ARE
REPLACED
OR
IMPROPER
OPERATION
IS
SUSPECTED.
SONY.
SERVICE
MANUAL

KV-9400
SCC-274A-A
Video System:
Automatic Controls:
Anode Voltage:
Power Requirements:
Power Consumption:
Dimensions:
Net Weight:
Accessories Supplied:
R, G, B cathode drive
ABL (automatic brightness limiter)
ACC (automatic color control)
ACK (automatic color killer)
ADG (automatic degaussing)
AFC (automatic frequency control)
AFT (automatic fine tuning)
AGC (automatic gain contro!)
ANC (automatic noise canceller)
AVR (automatic voltage regulator)
20 KV at zero beam current
120 V ac, 60 Hz
77 W ac (max.)
87 Wac (average)
Approx. 267(w) x 285(h) x 333(d) mm
10%(w) x 11%(h) x 337/s (d) inches
Approx. 8.3 kg (18 Ib 5 oz)
Earphone (ME-20B)
UHF loop antenna (AN-15)
Label indicator
Instruction manual
a

KV-9400
SCC-274A-A
SAFETY
CHECK-OUT
After
correcting
the
original
service
problem,
perform
the
following
safety
checks
before
releasing
the
set
to
the
customer:
‘cs
Check
the
area
of
your
repair
for
unsoldered
or
poorly-soldered
connections.
Check
the
entire
board
surface
for
solder
splashes
and
bridges.
Check
the
interboard
wiring
to
ensure
that
no
wires
are
“pinched”
or
contact
high-wattage
resistors.
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.
Look
for
unauthorized
replacement
parts,
par-
ticularly
transistors,
that
were
installed
during
a
previous
repair.
Point
them
out
to
the
customer
and
recommend
their
replacement.
Look
for
parts
which,
though
functioning,
show
obvious
signs
of
deterioration.
Point
them
out
to
the
customer
and
recommend
their
replace-
ment.
Check
the
line
cord
for
cracks
and
abrasion.
Recommend
the
replacement
of
any
such
line
cord
to
the
customer,
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.
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.
Check
the
antenna
terminals,
metal
trim,
“metallized”
knobs,
screws,
and
all
other
exposed
metal
parts
for
AC
leakage.
Check
leakage
as
described
below.
LEAKAGE TEST
The
AC
leakage
from
any
exposed
metal
part
to
earth
ground
and
from
all
exposed
metal
parts
to
any
exposed
metal
part
having
a
return
to
chassis,
must
not
exceed
0.5mA
(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-5S40A.
Follow
the
manufacturers’
instructions
to
use
these
instru-
> ments.
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
volt-
meter.
The
“limit”
indication
is
0.75V,
so
analog
meters
must
have
an
accurate
low-
voltage
scale.
The
Simpson
250
and
Sanwa
SH-63Trd
are
examples
of
a
passive
VOM
that
is
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
cold-
water
pipe
with
an
ohmmeter.
The
reading
should
be
zero
ohms.
If
a
cold-water
pipe
is
not
accessible,
connect
a
60—100
watts
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
of
the
line,
the
lamp
should
light
at
normal
brilliance
if
the
screw
is
at
ground
potential.
(See
Fig.
B)
Fig.
A.
Using
an
AC
voltmeter
to
check
AC
leakage.
To Exposed Metal
Parts on Set
AC
0.15
uF
1.5k2
voltmeter
(0.75V)
= Earth Ground
Trouble Light
7
a
Ohmmeter
2
AC
Outlet
Box
. EZ
(a)
Cold-water
Pipe
Fig. B. Checking for earth ground.
=35

KV-9400 SCC-274A-A
CIRCUIT BOARDS LOCATION

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KV-9400
KV-9400
SCC-274A-A
SECTION
1
OUTLINE
1-1. BLOCK DIAGRAM
v902
(Picture
Yirin
‘i
i
coma
)
cnseuter
(TUNER)
;
BRIGHT
|
a
z
i
Tapa
=
on
Tape
1
at
on
[moor
(este
—1
aml
bei
=
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care
[sane]
i
LL
BY DENOD
or
5 a Wie Ane} be[ineo oer} fvioco al
ms
rs
a
@=[rrace
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Aube
{
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I
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poral
os
|
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=]
PYF
LL
iv
M8)
|vermeaarsmas
:
i
—
ae
cd
u
-12v
Lad
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PEEL
AS.
‘HUE
CONT,
k
roe.
1
boiz
$
&
overeat
sw
{4
i
a
ioe
ico11_cHSELECT
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}
7a
D
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BLK
aa
DER,
V,
DEF
‘AF
OUT,
POWER
[\
surecy
“Hi8y
RECT
‘D510
iay
RECT
Dstt
~12v RECT
rave]
“0B
voay-a[
*2av
RECT
an
809
Meszsss
oe
rs
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}+170v
—e]
*170V
RECT
3600V
REGT
D513
4
—
[H. SaWoOTH PRODUCE]
4
r
[a
PuLse
sti
BEOT
DRIVE
‘REG OUT
‘aso2
REG REF
—5-
=

KV-9400
SCC-274A-A
KV-9400
SCC-274A-A
1-2,
CHANNEL
PRESETTING
©
Open
the
control
panel,
tuning
knob
@
Set
the
band
select
switch
to
one
of
the
three
color-coded
positions
corresponding
to
the
desired
channel
number.
Red:
channels
2
through
6
Yellow
:
channels
7
through
13
Blue:
channels
14
through
83
band select switch
S
=
|
@
Turn
the
tuning
knob
so
that
the
desired
station
is
properly
tuned
in.
AFT switch
@
Press
the
desired
channel
select
button.
Es;
SECTION 2
DISASSEMBLY
2-1.
FILTER
REMOVAL
Remove
the
filter
to
the
direction
shown
by
the
arrow@.
©
Release
the
filter
to
the
direction
shown
by
the
arrow®
.
@
Push
the
slot
screw
driver
to
the
direction
shown
by
the
arrow@
.
©
Put
the
slot
screw
driver
in
the
hole
of
the
bottom
side.
2-2,
FOR
CHECKING
A
BOARD
UP
Aboard
@
Release
the
A
board
from
the
A
bracket
to
the
direction
shown
by
the
arrow@.
@
Push
two
claws
of
the
A
bracket
to
the
direction
shown
by
the
arrow
@.
—3—

2-3. FOR CHECKING D BOARD UP
KV-9400
SCC-274A-A
KV-9400
SCC-274A-A
@
Open
the
D
block
ass’y
to
the
direction
shown
by
the
arrow®.
©
Push
two
claws
of
the
stays
(right
and
left)
to
the
direction
shown
by
the
arrow
@.
2-4.
FBT
CABLE
(HVR
BLOCK)
1.
REMOVAL
@ Pull out
the
cable.
REMOVAL AND INSTALLATION.
push
in
the
cable
and
turn 90°
2.
INSTALLATION
@
Contirm
that
the
cable
ean
not
be
pulled
out.
2-5.
PICTURE
TUBE
REMOVAL
©
anode
cap
remover
(Parts
No,
3-702-436-01)
eK,
anode
cap
AD
C
board
picture tube
Insert
the
remover.
funnel
®
neck
assy
Be sure to short-circuit the anode of
picture tube and the anode cap to
ground after removing the anode cap.
® deflection yoke
four
tapping
screws
(3
x
12)
OA
block
ass’y
®
four
tapping
screws
(5
x
20)
@one tapping
screw (3 x 12)
@ one tapping
screw
(3
x
8)
©
one
tapping
screw
(3
x
8)
Lug,
4mm
dia
=
@
Push
two
claws
of
stays
(right
and
left)
to
the
direction
shown
by
the
arrow@.
©
Open
the
D
block
ass’y
to
the
direction
shown
by
the
arrow@.
-10—

KV-9400
SCC-274A-A
KV-9400
SCC-274A-A
SECTION
3
SETUP
ADJUSTMENTS
(1)
The
following
adjustments
should
be
made
when
a
complete
realignment
is
required
ona
new
picture
tube
is
installed.
(2)
These
adjustment
should
be
performed
with
the
rated
power
supply
voltage
unless
otherwise
noted.
Controls
and
switches
should
be
set
as
follows:
PICTURE
control
. .
.fully
clockwise
(maximum)
Make
the
following
adjustments
in
the
order
as
follows
given:
1. Beam Landing
2.
Convergence
3. White Balance
Note:
Test
Equipment
Required.
1.
Color-bar/Pattern
Generator
BRIGHT
control.
.
.
fully
leftwards
(maximum)
2.
Degausser
AUTO,
AFT
switches
.
.
.
ON
3-1.
BEAM
LANDING
|
machanical
=
'
center
Preparation:
lf
fe
@
Feed
in
the
white
pattern.
io
.
mi
©
Before
starting,
degauss
the
entire
screen.
pate
neck
ass
"
1,
Loosen
deflection
yoke
screw.
'
2.
Set
purity
control
as
shown
in
Fig.
3-1.
Da
oc
. : 1
deflection
3.
Slide
deflection
yoke
as
far
forward
as
it
will
go.
yoke
4.
Position
neck
ass'y
as
shown
in
Fig.
3-2.
Fig.
3-2.
5.
Disconnect
leads
@
and
@
on
the
C
board.
6.
Adjust
purity
control
to
center
vertical
red
band
as
shown
in
Fig.
3-3.
7.
Slide
deflection
yoke
back
for
a
uniform
red
screen.
8.
Check
green
and
blue
rasters
for
uniformity
by
performing
the
same
way
as
steps
5,
6
and
7.
To
get
a
uniform
green
screen,
Fig.
3-3.
connect
lead
©
and
disconnect
leads
©
Purit)
7
[Disk
magnets
and
@
on
the
C
board.
tht
are
ee
|
eee
al
To
get
a
uniform
blue
screen,
connect
lead
@
and
disconnect
leads
©
and
@
on
the
C
board.
After
these
checks,
connect
the
leads
@,
@
and
@.
9,
Tighten
the
deflection
yoke
screw.
10. Check if
mislanding appears
at corners a—d as
shown
in
Fig.
3-4.
If
mislanding
is
observed,
“
aes
correct
it
as
shown
in
Fig.
3-4.
Darlection
yore
pel
eftonine
|
11.
Confirm
that
beam
landing
is
correct
when
the
receiver is faced in all direction.
C
board
—M-
3-2.
CONVERGENCE
Preparation:
©
Before
starting,
perform
FOCUS
and
V.SIZE
adjustments.
@
Set
BRIGHT
control
to
fully
rightwards.
©
Feed
in
the
dot
pattern.
RV702_
B.
DRIVE
RV704
G.
DRIVE
RV701_
8.
BKG
RV703
~G.
BKG-
RV705
R.
BKG
RV706_
SCRN.
3-3.
WHITE BALANCE
1.
2.
Feed
in
the
cross-hatch
pattern.
Turn
PICTURE
control
fully
counterclockwise,
and
set
BRIGHT
control
to
fully
rightwards.
Turn
RV702
(B.
DRIVE)
and
RV704
(G.
DRIVE)
fully
clockwise.
Set
RV701
(B.
BKG),
RV703
(G.
BKG),
and
RV705
(R.
BKG)
to
mechanical
center.
Turn
RV706
(SCRN
)
slowly
to
obtain
a
faint-
ly
visible
cross-hatch.
Note
the
color
that
first
becomes
visible
by
turning
RV706.
Do
not
turn
a
BKG
control
for
this
color.
(1)
Horizontal
and
Vertical
Static
Convergence
If
blue
dot
does
not
coincide
with
red
and
green
dots,
Move
BMC
magnet
(a)
to
correct
insufficient
H.
static
convergence.
Rotate
BMC
magnet
(b)
to
correct
insufficient
V.
static
convergence.
In
either
case,
repeat
Beam
Landing
Adjustment.
-12-
Adjust
the
other
two
BKG
controls
for
best
white
balance
(neutral
gray)
of
the
faint
cross-
hatch.
Turn
PICTURE
control
fully
clockwise,
and
set
BRIGHT
control
té
fully
leftwards.
Observe
the
screen
and
adjust
the
DRIVE
controls
for
best
white
balance.
Repeat
Steps
1
through
6
several
times.

(2) Dynamic Convergence Adjustment
Preparation:
@ Before starting, perform Horizontal and Vertical
Static Convergence Adjustment.
1. Loosen deflection yoke screw.
2. Remove deflection yoke spacers.
3. Move the deflection yoke for best convergence
as shown in Fig. 3-5.
4. Tighten the deflection yoke screw.
Install the deflection yoke spacers.
SCC-274A-A
KV-9400

KV-9400
Note:
41,
SCC-274A-A
SECTION 4
CIRCUIT ADJUSTMENTS
(1) TEST EQUIPMENT REQUIRED (5) CIRCUIT ADJUSTMENTS
1. Oscilloscope ia
2. Digital multimeter _\ Adjustment Boat Page
3. Color-bar/pattern generator
4, Variable auto-transformer. FOCUS £ ,
5. Isolation transformer SIF
6. Regurated-de power supply AFT
(2) INPUT SIGNAL
SUB BRT
When making these adjustments, feed in a cross- RP AGC in 15 and 16
hatch, color-bar or an off-air signal. a
(3) CONTROL AND SWITCH SETTINGS SUB CONTRAST
Controls and switches should be set as follows ACC
when making checks and adjustments unless COLOR SYNC
otherwise noted. AF
PICTURE contrl a Q
HUE control : 5
BRIGre co ntror | Set for best picture GHECIGAFTERICEOL D 17 and 18
COLOR control- RERLACED.
AUTO switch . . .ON R563 ADJUSTMENT
AFT switch . . . .ON
(4) These adjustment should be performed
with the rated power supply voltage
unless otherwise noted.
C BOARD ADJUSTMENT
FOCUS
Adjust RV707 for best Focus.
-14—
oo

KV-9400
KvV-9400
SCC-274A-A SCC-274A-A
isolation
trans
former.
4-3.
D
BOARD
ADJUSTMENT
transformer
CHECK AFTER
IC601
REPLACED
When
1C601
is
replaced,
make
this
check
certainly.
1,
Feed
in
a
dot
pattern
signal
from
color-bar/
pattern
generator.
2,
Set
the
PICTURE
control
to
the
MIN
position
and
turn
the
BRIGH
control
fully
counter-
clockwise,
3.
Supply
130
V
ac
to
the
point
as
shown
with
variable
auto-transformer.
digital
multimeter
[PIN
AMP
Adjust
RV504
to
make
vertical
lines
straight
as
shown
below.
COHEN
4.
Confirm
the
voltage
on
digital
multimeter
is
less
than
117
V
de,
5.
If
step
4
is
not
satisfied,
replace
C601
and
repeat
above
steps,
digital regurated-de digital
multimeter
power
supply
(B)
multimeter
regurated-de
power
supply
(A)
OO
H
FREQ
|.
Tune
ina
strong
offair
signal.
2.
Adjust
PICTURE,
BRIGHT
and
V.HOLD
con-
trols
for
the
suitable
and
stable
picture,
3.
Short
circuit
between
the
pins
24
and
16 of
1C501
with
a
jumper
during
this
adjustment.
4.
Adjust
RV501
for
the
stable
picture
as
shown.
We
LSS
fo:
too
low
_
fo;
suitable
fo;
too
high
(fo
=
15,734
Hz)
R563
ADJUSTMENT
When
replacing
the
following
components,
make
this
adjustment.
C505,
D502, R508, R528,
R529,
R563,
1C501
1,
Set
the
PICTURE
control
to
the
MAX
position
and
turn
the
BRIGHT
control
fully
clockwise,
2.
When
the
set
is
normally
operated
with
120
V
ac,
confirm
that
the
voltage
at
TP85
is
13
to
15 V de.
3
Supply
the
115
to
119
Ve
to
PIN
(@)
1C601
with
the
regulated-de
power
supply
(A)
and
confirm
that
the
set
is
normally
operated
on
any
all
channels.
(The
HV
hold
dom
cireuit
does
not
operate.)
i.
Supply
the
16.4
to
16.6
V
de
to
TP85
with
the
regulated-dc
power
supply
(B)
and
confirm
that
the
HV
hold
down
circuit
operates.
(When
the
HV
hold
down
circuit
operates,
raster
disappears.)
Note:
As
soon
as
the
HV
hold
down
circuit
operates,
turn
the
POWER
switch
to
OFF.
5.
If
steps
2
to
4
are
not
satistied,
select
the
resistance
value
of
R563
and
repeat
above
steps,
5.
Confirm
that
the
stable
picture
is
obtained
on
other channels,
‘Ss
-17—
—18—

SCC-274A-A KV-9400
(MEMO)

| KV-9400
SCC-274A-A
SECTION 5
DIAGRAMS
5-1. UHF AND VHF TUNER SCHEMATIC DIAGRAM
— BT-852 —
101 1725 ‘101 3sK76 i02,f03 17250105 1S2I98_DlO# IT25 Qloz 2scazis a
i} ‘TUNING UA RF AMP” TONING ‘SHOTOHING | TUNING ‘URE Locat Osc
Tew I
Pome TF
10
oe
luo ng Sue
bos 2
09 ow
T ca
018 tp
Let” Sure
nae
i
24
: 3
aise
ta
UHF/VHF
TUNER:
01S!
IT26
‘DIS6
IT25
QISI
3SK76
0157
1T25
152,153
IT26
D158 IT25
154,155
1726 DISS
IT25
ICI5I_CXO99
ad
De
tas
arene
ne) sears
oe?
NSB
Oia
ORGIES
ATRE
OS
es
is
c99
© Tuner reference numbers are not included in the Electrical
Parts List (Page 37-43)

KV-9400
KV-9400
SCC-274A-A
[R,G,
BOUT]
Cc
[Ss]
[TUNER]
SCC-274A-A
5-2,
MOUNTING
DIAGRAMS
A
—
S
Board
—
'
Cc
)
ir)
0
oo
=
2 2 a
i
a qa
—21-
~22-

—23-
SCC-274A-A
KV-9400 KV-9490
SCC-274A-A
BAND
SELECT,
CHANNEL PRESET
D
E
~24-

KV-9400
KV-9400
SCC-274A-A
SCC-274A-A
H.
DEF,
V.
DEF,
[i
OUT,
POWER
SUPPLY
]
D
[D|
Cc

SCC-274A-A K Vv 9400
(2) D BOARD
No.
PartNo.
Description
Remark
$1 3-701-353-00 Spacer, mica
$2
3-703-320-00
Bushing
(A),
transistor
53 ©4-302-432-00 Bracket, transistor
54
4-328-903-00
Bushing,
heat
sink
55
$4-335-311-00
Bracket,
cement-coated
resistor
56 64-335-320-00 Ring, short, FBT
57 -4.342-512-00 Knob, V-HOLD
58 4342-53-00 Bracket (D)
59 6 4-342-545-00 Heat sink
-35—

KV: 9400 SCC-274A-A
(3) MBOARD
Part No. Description Remark
3-703-035-11 Shaft, lid
4-314-871-00 Cushion
4-329-109-00 Knob, AFT
4-342-503-00 Button, sensor
4:342-504-00 Knob, slide
4-342-505-00 Button, POWER
4-342-511-00 Retainer, door
4-342-513-00 Tapping, flange
4-342-514-00 Crew, retainer, speaker
110 4-342-526-00 Door
WL 4-342-541-11 Handle
112 4-344-102-00 Label, AFT
113 @4-344-106-00 Bracket, POWER
114 4-344-107-00 Retainer, button
115 4-344-111-00 Indicator, preset
116 6 4-344-113-00 Bracket, M
117 4-344-118-01 Label, preset explanation