Sony KV-C2161D User manual

-KV-€2161D/C2561D/C2961D |
RM-816
SERVICE MANUAL AEP Model
KV-C 2161 D
Chassis No. SCC-F 07 K-A
KV-C 2561 D
Chassis No. SCC-F 07 F-A
KV-C 2961 D
E Chassis No. SCC-F 07 E-A
AE-1C CHASSIS
MODELS OF THE SAME SERIES
KV-C2161D/C2561D/C2961D
KV-C2551D/C2951D
KV-X2551D/X2951D
SPECIFICATIONS
[KV-C 2161 D, KV-C 2561 D, KV-C 2961 D)
Television
system
B/G/H
Inputs
/
Outputs
Terminals
Color
system
PAL,
SECAM,
NTSC3.58,
NTSC4.43
REAR
Stereo
system
GERMAN
stereo
: :
ae
Channel
eeveraye
VHF:
E2-E12
UHF:
E21-E69
21
pin
Euro
connector
—-Inputs
for
audio
and
vido
sigrvals
(CENELEC standard) -Inputs for RGB
-Outputs of TV video andaudio signals
CABLE TV (1) : $1-$41
CABLE TV (2) :S 01-S 05, M 1-M 10, U 1-U 10
Picture
tube
HI-Black
Trinitron
tube
G-2/-821-pin
Euro
-Inputs
for
audio
and
vide
sigrsals
Approx.
54.5
cm
(21
inches)
(KV-C
2161
D)
connector
-Inputs
for
S-video
(Approx.
51
cm
picture
measured
diagonally)
~Outputs
for
video
and
atdio
signals
100
°
degree
deflection
(selectable)
Approx.
63.5
cm
(25
inches)
(KV-C
2561
D)
&
Audio
output(vartable)
—
-phono
jacks
(Approx.
59
cm
picture
measured
diagonally)
110
° degree
deflection
FRONT
Approx. 72.4 cm (29 inches) (KV-C 2961 D)
(Approx. 68 cm picture measured diagonally)
110 ° degree deflection
-© Video input phono jack
© Audio inputs (L,R) phono jacks
S-video Inputs-4 pin DIN
Headphone jack : stereo mini jack
-Continued no next page-
TRINITRON©COLIR. TV
SONT'Y.

21 pin connector (81 @2)
Sound output ISW+15W - [RM-816]
Power consumption 87 Wh (KV-C2161D) Remote control system —_ infrared control
101 Wh (KV-C2561D) Power requirements 3V de
108
Wh
(KV-C2961D)
2
batteries
IEC
designation
|
Dimensions Approx. 645 X 433 X 495 mm (w/h/d) R6 (size AA)
(KV-C2161D) Dimentions Approx. 75 X 221 X 23mm(w/h/d)
Approx.
720
X
497
X
480
mm
(w/h/d)
|
Weight
Approx.
230g
(including
batters)
(KV-C2561D)
Accessories
supplied
IEC
designation
R6
batteries
(2)
Approx. 814 X 558 X 508 mm (w/h/d)
(KV-C2961D)
Approx. 25kg (KV-C2161D)
Approx.
38kg
(KV-C2561D)
Design
and
specifications
are
subject
to
change
without
notice.
Approx.
52kg
(KV-C2961D)
Supplied
accessories
RM-816
Remote
Commander
(1)
IEC
designation
R6
batteries
(2)
Signa! Signal level
Audio output B Standard level : 0.5Vrms
(right) Output impedance : Less than ikohm *
2 Audio input B Standard level : 0.5Vrms
(right) Input impedance : More than 10kohms *
Audio output A Standard level ; 0.5Vrms
(left) Output impedance: Less than |kohm *
Fo] ol] Ground (audio)
Jo] o|
Ground (blue)
Audio input A Standard level : 0.5Vrms
(left) Input impedance : More than 10kohms *
0.7 + 3dB, 750nms, positive
High state (9.5-12V): Part mode
Function select Low state (0-2V): TV mode
(AV control) Input impedance : More than 10kohms
Input capacitance: Less than 2nF :
Jo
Ges. ee se
(S_ signal) Ba
0 | croma input 0.3V + 3B, 75ohms, positive
Bianking
input
High
state
(1
-3V)
Low
state
(0—0.4V)
(Ys_
signal)
Input
impedance
:
7Sohms
ec ease
|
is
[ofofo]
Video
output
1V
+
3d8.
750hms,
positive
Sy
2:0.3V
€-3,
+
Video
input
iV
+
3dB,
75ohms,
positive
Sync:
0.3V
C-3.+
Video
1V
+
348,
750nms,
positive
Sync
:0.3V
(-3.+
Input
/Y
{S
signal)
10dB)
[2
POTSLOT
commen
sroune
(ug
snwiy
id
© Connected @unconnected (open) * at 20Hz — 20kHzZ
}o|-|-
|
Red
input
0.7V
+
3dB,
75ohms,
positive
4 Pin connector (&)
Pea
ie
=e
ee
et
ee
2
1V
+
3dB
75ohm,
positive
Sync
0.3V.%
dB

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KV-C2161D/C2561D/C2961D
TABLE OF CONTENTS
Section
Title
Page
1.
GENERAL
Switching
On
/
Off
sscescessessstsesseeseeseseereseeceeesenecneees
4
Presetting
Dede
dae ann
aWRae
doleeo
tai
se
ebNaldhus
MEME
Cone
eee
eee
eeslee
eee
nee
4
Basic
TV
Operation
aia
tibia
Larse
Vea
e
Stas
Su
aiee
eee
ame
ae
eng
oa
cae
eweeas
6
Advanced
TV
Operation
Vania
bie
cabereehensegivceoeuns
tee
siesesievee
te
7
Teletext
Operation
Le
ciel
lk
ete
sha
Ri
ane
eas
bose
Ovnw
eee
na
tie
la
mMenesee
8
Optional
Connections
/
Operations
:-++strerstrrereerteretteteees
9
2.
DISASSEMBLY
2-1-1.
Rear
Cover
Removal
(2Linch):+rrstrrrerrrrserrse
reece
ee
10
2-1-2.
Rear
Cover
Removal
(2Sinch,
29inch)-+++++++rseeree+
10
2-2-1.
Chassis
Assembly
Removal
(2linch)
ssrrrrrrerreeeeee
10
2-2-2.
Chassis
Assembly
Removal
(25inch,
29inch)
-++++++-
10
2-3.
Aand
JI
Boards
Removals:r:ssestececeteteteteteseeeeees
11
2-4.
Band
V
Boards
Removal
crcrcsrsrcerceretetereeseeee
sees
11
2-5-1.
Service
Position
(21
inch)
deeds
seem
een
e
er
eeeeeeeeeeeneeeaes
12
2-5-2.
Service
Position
(2Sinch,
29inch)
vrrrrrtrrsssserteseee
12
2-6-1.
Picture
Tube
Removal
(2linch)+:++++++rsrreeereereeeeee
13
2-6-2.
Picture
Tube
Removal
(2Sinch,
29inch):+++++sreere++
14
3.
SET-UP
ADJUSTMENTS
(2linch,
25inch)
3-1.
Beam
Landing
:++1-++:s:essteseteseeesersceesereteseeereeees
15
3-2.
Convergence
sr1:irerrsssteeeerrsseseeretsssereenecnes
16
cae
Sn
“Yoel
(Reo
18
3-4,
White
Balance
srrercrcsssseseereenaeteeereseeeseseeeeneenaes
18
(29inch)
3-5,
Beam
Landing
ailcibfa
dvncvin's
vviaieiefeie
viele
pine
aie
eGis
ODS
eRe
eres
waCOS
nes
20
3-6.
Convergence
::1rtssssssssessssessenterseteeeesnenesnennes
21
3-7,
Focus
cceecrccsteetesereneseenenseneeeerecssseeenestaeceesnese
23
3-8,
White
Balance
-srsrsrercereeeeeeerseeenenceererseeeseeee
ene
23
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.
eae eed G
Section Title Page
4. CIRCUIT ADJUSTMENTS
4-1. A Board Adjustments --+:-r1ssseseeeeetsenseeeenernees 24,
4-2. B Board Adjustments s+e+sssseessesserseeeseseeeeeeeaeeeee 24
4-3, D Board Adjustments OTe ree Tee reer er rere er Tere errr reer ry 25
4-4, Jl Board Adjustments Wiebe Wiad nin eae ANI AUS ha dee eo cbs Wels: +26
4-5. V Board Adjustments PETER Oe CCT ERE PRR ET ECCS 26
4-6. Secondary Adjustments Wiaieg S asace Waajwateceiaie maleate see a one’s oaie: 27
5. DIAGRAMS
5-1. Block Diagram Pereer er er reer rere errr reesei irre errr reer es 29
§:2 ‘Circuit Boards Location s:sssese-ser ses etertoes cdececses 35
5-3. Schematic Diagrams and :
Printed Wiring Boards SeeTerererrrirrerererirrre steerer st 35
5-4, Semiconductors SUSPECT OOCTOTESeTeTereeerTerericrr a etre ere re 66
6. EXPLODED VIEWS
6-1. Chassis (2Linch):-++:1+sresreeseeteseeseeetniene ees eeeeees 68
6-2. Picture Tube (Zlinch)-+++s+sssesseesseeeeseteee eeeeeeeaes 69
6-3. Chassis (25inch, 29inch) «+++-+e+te+eseeessene eeseeseees 10
6-4. Picture Tube (2S5inch, 29inch)-++++-+++stee re etter eee 71
7, ELECTRICAL PARTS LIST ---:cccccccectceersesee ereneenees 72
SAFETY-RELATED COMPONENT WARNNG !!
COMPONENTS !DENTIFIED BY SHADING AND MARK
A ON THE SCHEMATIC DIAGRAMS, E\pL-ODED
VIEWS AND IN THE PARTS LIST ARE CRITICAL TO
SAFE OPERATION. REPLACE THESE COMIOPNENTS
WITH SONY PARTS WHOSE PART NUMBERS arPPEAR
.AS SHOWN IN THIS MANUAL OR IN SUPP(ENAENTS
PUBLISHED BY SONY.

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SECTION 2
DISASSEMBLY
2-1-1. REAR COVER REMOVAL (21 inch)
@ Rear cover
@® Four screws
(BVTP4 X16)
@ One screw
(BVTP4 X 16)
2-2-1. CHASSIS ASSEMBLY REMOVAL
(21inch)
@ After the assembly
of the main chassis,
lift and pull out rear
part of the main
chassis toward the
rear.
@) Push the four claws of the main chassis
in the direction of arrow and remove the
H bracket upwards.
2-1-2. REAR COVER REMOVAL (25inch, 29inch)
@) Rear cover
@ Four screws
(BVTP4 X 16)
Zh, \
al -
OS
@ One screw
(BVTP4 xX 16)
2-2-2. CHASSIS ASSEMBLY REMOVAL
(25inch, 29inch)
@ After the assembly
of the main chassis,
lift and pull out rear
part of the main
chassis toward the
rear.
H1-H2-F bracket
@) Push the two claws of the main chassis in
the direction of arrow and remove the F11-
H2-F bracket upwards.
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KV-C2161D/C2561D/C2961D
RM-816
2-3. A AND J1 BOARDS REMOVAL
@ Remove the claw. ae
az
see @ Remove the T type rivet.
® A board
© PCB supporter
© Remove the two T type rivets.
() Remove the claw.
@ Remove the claw.
@ Open the J1 board in the direction of the
arrow @).
\ board
2-4. B AND V BOARDS REMOVAL
ww
1. —— @ B Loard
Note: 10 pin extension cable (S-0945-001-0)

2-5-1. SERVICE POSITION (21linch)
*
Remove
the
bracket
from
the
main
chassis
assembly
and
then
perform
the
following
servicing.
(Refer
to
2-2-1.
CHASSIS
ASSEMBLY
REMOVAL.)
@ Remove main chassis assembly in the
direction of the arrow.
@ Connect the main chassis assembly to the holder.
2-5-2. SERVICE POSITION (25inch, 29inch)
*
Remove
the
connector
bracket
from
the
main
chassis
assembly
and
then
perform
the
following
servicing.
(Refer to
2-2-2.
CHASSIS
ASSEMBLY
REMOVAL.)
@ Remove main chassis assembly in the
direction of the arrow.

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C2561D/C2961I
RM-81
KV-C2161D/
@ Main chassis assy
@ C board.
@ Deflection yoke ne ee
@) Four PT screws (S)
Picture tube
@ Anode cap
Cushion
EMOVAL OF ANODE-CAP
TE:
Short
circuit
the
anode
of
the
picture
tube
and
the
anode
cap
to
the
metal
chassis,
CRT
chieldor
carbon
painted
on
the
CRT,
after
removing
the
anode.
.
ngifee
77
REMOVING PROCEDURES
Amcfe button
@
Turn
up
one
side
of
the
rubber
cap
in
@
Using
a
thumb
pull
up
the
rubber
cap
@
When
one
side
of
the
nb
ber
cap
is
°
®
@
the
direction
indicated
by
the
arrow
@.
firmly
in
the
direction
indicated
by
the
separated
from
the
anode
beutton,
the
arrow ©.
anode-cap can
be
removei
by turning
up
the
rubber cap and
puireg
up
it
in
the direction of the arrow (),
HOW TO HANDLE AN ANODE-CAP
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.

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2-6-2.
PICTURE
TUBE
REMOVAL
(25inch,
29inch)
® Four PT screws
© Picture tube shield assy
Speaker (L
@
Speaker
(L)
@®
Pull
out
chassis
assy
® C board
(29inch)
@® Deflection yoke
@ Anode cap eee b
) Speaker (R)
40 Picture tube
Cushion
*
REMOVAL
OF
ANODE-CAP
*
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
buttors,
the
arrow
©).
anode-cap
can
be
removed
by
taurning
up
the
rubber
cap
and
pulling
up_
it
in
the direction of the arrow ©.
*
HOW
TO
HANDLE
AN
ANODE-CAP
®
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.

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KV-C2161D/C2561D/C2961D
RM-816
SECTION 3
SET-UP ADJUSTMENTS
@ The following adjustments should be made when
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 controls and switch below should be set as follows
unless otherwise noted :
@® CONTRASTcontrol.---.---. 80%(or Normal by
commander)
t BRIGHTNESS control....-50%
Perform the adjustments in order as follows:
Preparation: (21 inch, 25 inch)
@ Set the side of the unit with the PICTUE TUBE so
that it faces east or west in order to reduce the
influence of external magnetic force.
@ Turn the power switch for the unit ON and erase
the magnetic force using a degausser..
3-1. BEAM LANDING
Demagnetize with a degausser
1. Input a raster signal with the pattern generator.
CONTRAST
BRIGHTNESS
2. Turn the raster signal of the pattern generator
to red.
3. Move the deflection yoke backward, and adjust
with the purity control so that red is in the center
} normal
and blue and green are at the sides evenly.
(Fig.3-1 - 3-3)
4. Move the deflection yoke forward, and adjust so
that the entire screen becomes red. (Fig.3-1)
5. Switch over the raster signal to blue and blue and.
confirm the condition.
6. When the position of the deflection yoke is
determined,tighten it with a deflection yoke mount-
ing screw.
7. When landing at the corner is not right, adjust
by using the disk magnets. (Fig.3-4)
ae i - Gee
1. Beam Landing
2. Convergence
3. Focus
4, Screen (G 2) and White Balance
Note: Test Equipment Required:
1. Color bar/Pattern Generator
2. Degausser
3. DC Power Supply
4. Digital multimeter
5. Oscilloscope
Purity control
Disk magnets or -|.
rotatabled isk
magnets torrect
‘these areis (a-d),
Deflection yoke positioning
corrects these areas.

3-2.
CONVERGENCE
4.When
the
V.STAT
magnet
is
moved
in
the
Preparation:
direction
of
arrow
@
and,
red,
green
and
blue
dots
@
Before
starting,
perform
FOCUS,
H.SIZE,
and
V.
move
as
shown
below.
SIZE
adjustments.
@
Set
BRIGHTNESS
control
to
minimum.
Q)
®
®
@
Feed in the dot pattern.
®--~
®
7 8
(1)
Horizontal
and
Vertical
Static
Convergence
é
\
'
ae
|
ro
|
ne
|
Center dot
(2)
RV 704 B-DRIVE
RV 703 G-DRIVE
RV 702 H.STAT
RV 701 SCREEN
1.
Adjust
HSTAT
VR
to
converge
red,
green
and
blue
(KV-21
inch
only)
dots
the
in
center
of
the
screen.(Horizontal
move-
ment)
If
the red
and
blue
dot
do
not
converge
with
green
2.
Adjust
V.
STAT
magnet
to
converge
red,
green
and
dots,
perform
following
steps.
blue
dots
in
the
center
of
the
screen.
(Vertical
move-
|
Move
BMC
magnet
(a)
to
correct
insufficient
H.sta
tic
ment)
convergence.
3.
If
the
red,
green
and
blue dots
do
not
converge
on
Rotate
BMC
magnet
(b)
to
correct
insufficient
V.static
the
center
of
screen
with
H.STAT
VR,
perform
convergence.
horizontal
convergence
adjustment
using
H.STAT
In
either
case,
repeat
Beam
Landing
Adjustment.
VR
and
V.STAT
magnet
as
shown
below.
(In
this
case,
H.STAT
VR
and
V.STAT
magnet
effect
each
other.)
@
Tilt
the
V.STAT
magnet
and
adjust
static
conver-
gence
to
open
or
close
the
V.STAT
magnet.

|
KV-C2161D/C2561D/C2961D
RM-816
( KV-25 inch only)
@ Operation of BMC (Hexapole) Magnet
RG 8 R G B R GB
O-O-—-0 <> 0—0-—_0 <a 0-0-0
The respective dot positions resulting from
moving each magnet interact, so be sure to
perform adjustment while tracking.
Use the H.STAT VR to adjust the red, green, and
blue dots so they coincide at the center of screen
(by moving the dots in the horizontal direction).
(2) Dynamic Convergence Adjustment 3. Move the deflection yoke for best
Preparation: - convergenceas shown below.
@ Before starting perform Horizontal and Vertical 4. Tighten the deflection yoke screw.
static convergence Adjustment. 5. Install the deflection yoke spacers.
1. Slightly loosen deflection yoke screw.
2. Remove deflection yoke spacers.

(3) Screen-corner Convergence
Affix a Permalloy ass’y
corresponding to the
misconverged areas
a-d : screen-corner
misconvergence
3-3. FOCUS
Adjust FOCUS so that the whole
screen is in best focus.
RV 704 B-DRIVE
RV 703 G-DRIVE
FOCUS
VR
C
board
RV 701 SCREEN
Screen (G 2) Setting
1. Input dot signal from the pattern generator.
2.
Set
the
picture
BRIGHTNESS
control
to
minimum
level.
3. Apply 170 V DC to the cathodes of R,G and B from
an external power power source.
4. While watching the picture, adjust the G 2 voluime
(RV701) immediately before fly-back line disap>pears.

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| KV-C2161D/C2561D/C2961D
RM-816
White Balance Adjustment
1. Input all-white signal from the pattern generator.
2. Adjust the BRIGHTNESS and COLOR controls to the
standard level.
3. Adjust the following using RV 704 (B DRIVE) and
RV 703 (G DRIVE)
In the following adjustments, the CONTRAST, COLOR
and BRIGHTNESS controls are, set to normal unless
otherwise specified.

Preparations: (29 inch)
In order to reduce the influence of geomagnetism
on the set’s picture tube face it east or west.
@ Switch on the set’s power and degauss with the
degausser.
3-5. BEAM LANDING
1.
as
Input the white signal with the pattern generator.
Contrast 1
Bightness ee
. Position neck ass’y as shown in Fig 3-6.
Set the pattern generator raster signal to red.
“Move the deflection yoke to the rear and adjust
with the purity control so that the red is at the
center and the blue“and- the -green take up
equally sized areas on each side.
(See Figures 3-5 through 3-7.)
Move the deflection yoke forward and adjust so
that entire screen is red. (See Figure 3-5.)
Switch the raster signal to blue, then to green
and verify the condition.
When the position of the deflection yoke has
been decided, fasten the deflection yoke with the
screws.
If the beam does not land correctly in all the
corners, use a magnet to adjust it.
(See Figure 3-8.)
Fig. 3-7
this area.
Purity control corrects
Disk magnets or
rotatable disk
magnets correct
these areas (a—d).