Sony TRINITRON KV-M2170A User manual

SERVICE
MANUAL
MODEL
BE-4A ‘CHASSIS
are
KV-M2170A
KV-M21714
KV-M2170B
KV- M2170E
KV-M21471E
COMMANDER DEST. — cHASSISNO. MODEL COMMAND DEST. - CHASSIS NO.
* RM- 836: * ftalian SCC-JOSB-A KV- M 9D 1 70 K M836" OIRT — §CC-JO3B-A
RM-836
Italian
SCC-JO5A-A
KV-
M21
71
K
RM-836
-
.OIRT
—SCC-JO3A-A’
RM-836 French SCC-JO6A-A |~ K\- M?1 71 KR RM-836 Russian SCC-JO3C-A
RM-836
©
French
SCC-JO6B-A
|
K\-
M1
70
[
RM-836
“Irish
SCC-JO2B-A
“RIM-836 AEP — SCC-JO8A-A K\- M21 71 L ee Irish ~ SCC-JO2A-A
‘RM-836 AEP — SCC-JO8B-A | - | K\- M21 70 U RM-836 - UK — SCC-JO1B-A
RM-836 — Spanish SCC-JO4B-A" | KV- M21 71 U ‘RM-836 UK SCC-JO1A-A
Spanish SCC-JO4A-A
RM-836_
TRINITRON COLOR TV
SONY.

KV-M217
ITEM
MODEL
©
Television
System
Channel
Coverage
Colour
System
: VHF: E2-E12, $1-S20
Italian
B/G/H
UHF:
£21-E69
PAL
Eranch
;
BIGIH,
L
VHF:
E2-E12,
S1-S20,
S21-S41,
F2-F10,
B-Q
PAL,
SECAM
UHF: E21-E69, F21-F69
VHF: E2-E12, $1-S20, S21-S41
AEP
B/G/H
UHF:
£21-E69
PAL,
SECAM
VHF: E2-E12, S1-S20, S21-S41
Spanish
B/G/H
UHF:
E21-E69
PAL
B/G VHF:
E2-E12
UHF:
E21-E69
OIRT
ian
Hyper:
$1-S41
(KV-M2170K/M2171k)
es
Russian
‘
Super:
$1-S20
(KV-M2171KR)
(video
_
roel
)
.
D/K
VHF:
RO1-R12
UHF:
R21-R69
ia
|
aa
VHF:
A-J
(KV-M2170L/M2171L)
On
UHF:
21-69
PAL
Huper; $1-S41 (KV-M2170L/M2171L)
bs = a ed
OIRT Irish
SPECIFICATIONS
Picture Tube Hi-Black Trinitron
Approx. 55 cm (21 inches)
(Approx. 51 cm picture measured
diagonally)
100° -deflection
Input/Output Terminals
[INPUTS]
21-pin connector (CENELEC standard)
- audio / video input
- RGB input
[OUTPUTS]
Q Headphone jack : minijack
Sound output 4W (RMS)
5W (music power)
Dimensions 513x475x475 mm approx.
Weight Approx. 2! .0kg
Supplied accessories RM-836 Remote Commander (1)
IEC designated batteries (2)
Other features TELETEXT (KV-M2171A/M2171B/M2171D/M2171E/M2171K/M2171KR/M2171L/M2171U)

KV-M217
[RM-836]
Remote control system _ infrared control
Power requirements 3V dc (2 batteries) R6 (size AA)
Dimensions Approx. 210x45x24 mm (w/h/d)
Weight Approx. 90g (Not including batteries)
Design and specifications are subject to change without notice.
KV-M2170K
KV-M2171K
KV-M2171KR
KV-M2170B
*KV-M2171B
KV-M2170D | KV-M2170E
KV-M2171D | KV-M2171E
KV-M2170A
KV-M2171A
Pal Comb
RGB Priority pee
Woofer Box
KV-M2170L
KV-M2171L
KV-M2170U
KV-M2171U
Front in (3)
Scart 4
eee
English
WARNING ( KV-M2170L/M2171L/M2170U/M2171U only )
The flexible mains lead is supplied connected to a B.S. 1363 fused
plug having a fuse of 5 AMP capacity. Should the fuse need to be
replaced, use a 55 AMP FUSE approved by ASTA to BS 1362, ie
one that carries the mark.
IF THE PLUG SUPPLIED WITH THIS APPLIANCE IS NOT
SUITABLE FOR YOUR SOCKET OUTLETS IN YOUR HOME.
IT SHOULD BE CUT OFF AND AN APPROPRIATE PLUG FITTED.
THE PLUG SEVERED FROM THE MAINS LEAD MUST BE
DESTROYED AS A PLUG WITH BARED WIRES IS
DANGEROUS IF ENGAGED IN A LIVE SOCKET OUTLET.
When an alternative type of plug is used it should be fitted with a5 AMP
FUSE, otherwise the circuit should be protected by a5 AMP FUSE at the
distribution board.
How to replace the fuse.
Open the fuse compartment with the
screwdriver blade
and replace the fuse.
FUSE

KV-M217
21 pin connector ( 6-1 )
21
19
17
15
13
j-J>[e]~]=[2]
20
18
16
14
12
10
ole lg
1 Audio output B (right) Standard level: 0.5Vrms
Output impedance:less than 1kohm*
2 Audio input B (right) Standard level:0.5Vrms
Input impedance:More than 10kohms*
3 Audio output A (left) Standard level:0.5Vrms
Output impedance:iess than 1kohm*
Audio input A (left) Standard level:0.5Vrms
Input impedance:More than 10kohms*
ee oe Blue input 0.7V23dB, 750hms, positive .
Function select (AV control) High state (9.5—12V):Part mode
Low state (0O—2V):TV mode
Input impedance:More than 10kohms
Input capacitance:Less than 2nF
Green signal:0.7V+3dB.
75ohms, positive
Ground (blanking)
Red input 0.7V+3dB, 750hms, positive
{S signal) croma input
0.3V+3dB, 75ohms, positive
Blanking input (Ys signal) High state (1—3V)
Low state (O—0.4V)
Input impedance:75ohms
Ground (video output)
Ground (video input)
Video output
1V+3dB, 750hms, positive
Sync:0.3V(--3, +10dB)
Video input 1V+3dB, 75ohms, positive
Synce:0.3V(-3, +10dB)
1V+3dB, 75ohms, positive
Input/Y (S signal) Sync:0.3V(-3, +10dB)
Common ground (plug, shield)
© Connected @ Not Connected (open) * at 20Hz - 20kHz

KV-M217
TABLE OF CONTENTS
Section Title Page — Section Title Page
1. GENERAL
Getting Started .......cccccccsescecsssecsesseeveseeceseseeseceeseereascesateeeane 6 5. DIAGRAMS
TV Operations ..:..cessnccsvecesees nts veined oh eahte ieee arsec ie teocee 8 Sel. ‘Block Didgtainis:::.4 i428 .scscoy. ela ee estawate 25
Adjusting the picture and sound ..0.......cccceceeeeeesesseseeeeees 8 5-2. Circuit Boards Location occ eeeeeeeeeeeteeeneenees 29
Menu Operation . 9 5-3. Schematic Diagrams and Printed Wiring Boards ....... 29
Advanced Presetting FUnctions .0.......cccccesssesseeseneeeeeeees 10 A Board osicvss tits sacchatiseveahesectantcureisscocdagecbonaveecaasvaret 33
Teletext Operation ......cccecceesseeeseeeeteseseeseseseeneeseaesenes 11 * © BOatd wniiedeidstaisiuta ts ah sas siayguneecoiaed 39
Optional Connections 12 524.) Semiconductors :.iciaisiiscects.secdseceesas teas tcenientans 41
Addtional Information ..0......ccccccececseseseceeesessereseeseeneeees 12
6. EXPLODED VIEWS
2. DISASSEMBLY 6-1. Chassis and Picture Tube .....c.ccccccccsseseseeceseseessecesnees 42
2-1. Rear Cover Removal ........ cece ssessseescsesseneeseenes
2-2. Service Position ............. 7. ELECTRICAL PARTS LIST ..........::cccccesssseseeseeee 44
2-3. Picture Tube Removal
3. SET-UP ADJUSTMENTS
3-1. Beam Landing ccc eecccsessessesesceseceessseeseseeseesesseeses 16
3-2. COnVergenGe sx, ocsiase Ne ccceseccttahesevessesasatiisieleeseeeeectibes 17
3-3. Screen (G2), Drive, White Balance,
Sub Colour and Sub Brightness... eee 19
BrAi, - TPOCUS ches desceseueeci car aventetencensivcredteststnece tagenesatenraoeeare 19
4. CIRCUIT ADJUSTMENTS
4-1. Electrical Adjustments .........:ccccscsssessseseeeseesensnesesseeees
4-2. Test Mode 2: oe eseseseeseneees a
4-3. BE-4A Self Diagnostic Software ........ccccccecceeeeeeees
CAUTION ATTENTION
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 FOR SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
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 CAT HODIQUE
OU AU BLINDAGE DU TUBE CATHODIQUE.
ze
ATTENTION !!
AFIN D'EVITER TOUT RISQUE D'ELECTROCUTION PROVENANT
D'UN CHASSIS SOUS TENSION, UN TRANSFOR MATEUR
D'ISOLEMENT DOIT ETRE UTILISE LORS DE TOUT DE ANNAGE.
LE CHASSIS DE CE RECEPTEUR EST DIRECTEMENT RACCORDE
A UALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS ALA
SECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE
MARQUE /\\ SUR LES VUES EXPLOSEES ET LES LSSTES DE
PIECES SONT D'UNE IMPORTANCE CRITIQUE PUR LASECURITE
DU FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES
COMPOSANTS SONY DONT LE NUMERO DE PIECE EST INDIQUE
DANS LE PRESENT MANUEL OU DANS DES SUP? LEMENTS
PUBLIES PAR SONY. :

6
SECTION 1 GENERAL
BR
Getting Started
Inserting the Batteries into the
Remote Commander
Connecting the Aerial
If you connect a VCR, skip to step 3.
Connect an external aerial to the
socket Rk.
Connecting a VCR
7 tis reconunended to tune in the WOR signal to
Programme number “0”. For details, see “Presetting
Channels Manually” on page 12.
Getting Started
The operating instructions mentioned here are partial abstracts from
the Operating Instruction Manual. The page numbers of the
Operating instruction Manual remain as in the manual.
IR) am-ss6

TV Operation
}step4
TV
Operation
Presetting Channels
Automatically
TV searches for all available
channels. If manual tuning is
preferred see Menu option -
Presetting Channels Manually.
This section explains functions used whilst watching TV. Most operations are carried
out using the Remote Commander.
1 Plug into mains.
Press power switch © [ff] on TV set.
2 Press and hold »>U FM on TV set for 2 seconds.
Auto tuning starts and screen shows.
Notes * When Auto tuning stops the programme on
position 1 is seen.
¢ KV-M2171U/M2171L only — channels are automatically
stored as follows:
KV-M2171U
Programme 1 BBC1
Programme 2 BBC2
Programme 3 ITV
Programme 4 CH4 or S4C
Programme 5 —
Programme 6 —
KV-M2171L
RTE1
RTE2
BBC1
BBC2
ITV
CH4 or S4C
To Press
Switch on OW on TV
Switch off temporarily o®@
TV is now in standby mode, © indicator MJ on
TV lights.
Switch on again OG, PROGR +/-@ 0 or any number
button®
Switch off completely © WY on TV
To save energy we recommend switching off
completely when TV is not in use.
Select programmes PROGR +/- @ or number buttons ®
For double digit numbers press -/-- @ then the
number e.g. For 23, press -/--@ then 2 and 3.
Display the programme number (eK)
Press again to make programme number
disappear.
Adjust the volume —1+/-@
Mute the sound Keo
Press again to restore sound.
View video input 2e0n
Press again to return to TV programme.
View programmes in 16:9 mode 82 @
Press again to return to 4:3 mode.
Getting Started 7 8 TV Operation

Teletext Operation (only for KV-M2171U/M2171L)
Viewing Teletext
Teletext is an information service broadcast by TV stations.
1 Select the channel which carries the teletext service you
wish to receive.
2 Press © @ to switch on teletext.
3 Input three digits for the page number using the
programme number buttons ® or PROGR +/- OW.
4 Press CO @ to switch off teletext.
Note ¢ Teletext errors may occur if the broadcasting signals are weak.
Using Other Teletext Functions _
Superimposing teletext on the TV
Press © @ once in teletext mode or twice in TV mode to
superimpose teletext on the TV screen.
Press © © again to cancel superimposing.
TELETEXT |
a
Freezing a teletext subpage
Press @ @ (HOLD) to freeze the subpage. Freezing the page
prevents the information that is displayed from being updated.
Press & @ to cancel HOLD and allow update to continue.
Revealing concealed information (eg: answers to a quiz)
Press (7) @ to reveal information.
Press again to conceal the information.
Using colour buttons to access pages
When the colour coded menu appears at the bottom of a page,
press the colour button (red, green, blue or yellow) @@@
to access the corresponding page.
Note © A programme status message in a blue box may appear when you
change programmes (depends on broadcasters).
Teletext Operation
9 10
MENU Operation
Use buttons on Remote Commander to control Menu screen.
MENU
Cc) MENU @
Menu Screen
on/otk Green ©
scroll up
Red @ a. Yellow ©
decrease [7 e\\Bf increase/confirm(OK)
Blue @
scroll down
Adjusting the Picture
1 Press MENU @.
2 Press green @ or blue @ button to select the item you wish to change.
Symbol Item - Effect +
0 Picture Less More
Q Colour Less More
oO Brightness Darker Brighter
(aa) Sharpness _ Softer Sharper
3 Press red @ or yellow @ button to change levels.
4 Press MENU @ to return to normal TV screen.
Note ¢ To reset to factory preset picture levels, press green
@ or blue @ button to select +-< and press yellow
(OK) © button.
MENU Operation

Using the Sleep Timer
The TV may be set to switch to the standby
mode automatically after a length of time
chosen by you. You may set the time
in 30 minutes steps up to 4 hours.
1 Press MENU Q.
2 Press green @ or blue @ button to select ('.
3 Press red @ or yellow © button to set time delay.
0.00 (OFF) 0.30 1.00 1.30.... 4.00
4 Press MENU @ to return to normal TV screen.
When watching TV, press © @ to display time remaining.
MENU Operation
11 12
Presetting Channels
Manually
Up to 60 programme positions are
available for presetting channels.
1 Press MENU Q.
2 Press green @ or blue @ button to select >and
press yellow (OK) © button.
3 Select programme number using PROGR +/- QW or
the number buttons @.
4 Press green @ or blue @ button to select tuning bar (Ill)
and press red @or yellow © button to start channel search.
When a channel is found the tuning bar stops moving and
you see the picture.
5 If you want to store, press green @ or blue @ button to
select O and press yellow (OK) ® button. If you do not want
to store, press red @ or yellow © button to continue search.
6 Repeat steps 3 to 5 for all other channels.
7 Press MENU @ to return to normal TV screen.
MENU Operation

Skipping
Programme Positions
You can skip unused programme positions when
selecting channels with the PROGR +/- QW] buttons.
You can still select them, however, using the number
buttons @.
1 Press MENU @.
2 Press green @ or blue @ button to select > and
&
press yellow © button.
3 Select programme number you want to skip
using PROGR +/- @ [J button or number
buttons @.
4 Press green @ or blue @ button to select Coo and
press yellow (OK) © button.
5 press green @ or blue @ button to select © and
press yellow (OK) © button to store.
6 Repeat steps 3 to 5 for other unused programme
positions.
7 Press MENU @ to return to normal TV screen.
Note « To restore a skipped programme number, refer to
“Presetting Channels Manually”.
MENU Operation
13 14
Fine-Tuning
Channels
You can fine tune a stored channel if necessary.
1 Select the channel you wish to fine tune.
2 Press MENU @.
3 Press green @ or biue @ button to select >and
press yellow (OK) © button.
4 Press green @ or blue @ button to select +F + and
use red @ or yellow © button to adjust tuning.
5 press green © or blue @ button to select © and
press yellow (OK) © button to store.
6 Press MENU @ to return to normal TV screen.
MENU Operation

Exchanging
Programme Positions
After tuning you may wish to rearrange the
programme positions.
1
Press MENU @.
Press green @ or blue @ button to select > and
press yellow (OK) © button.
Press green @ or blue @ button to select
PROGR 4% and press yellow (OK) © button.
Press red @ or yellow © button to select
the first programme position.
Press the blue @ button.
Press the red @ or yellow © button to select
the second programme position.
Press blue @ button to select and press
yellow (OK) © button to exchange.
Repeat steps 4 to 7 for other programme
positions.
Press MENU @ to return to normal TV screen.
MENU Operation 15
16
Optional Connections
Using the
21-pin Connector
Your TV has one 21-pin connector fM@ on the rear of
the set. You can connect optional audio or video
equipment to this connector, such as a VCR, video
games or a video disc player.
1 Press QE to view the video input signal.
2 Press S)@B or © @ to return to normal
TV screen.
Connecting
Headphones
Plug in the headphones to the 9 [@] socket on the front of the TV
set, then the sound from the speaker is muted.
Optional Connections

Additional Information
Troubleshooting
Here
are
some
simple
solutions
to
the
problems
which
affect
the
picture
and
sound.
Problem
Solution
No picture, screen is dark, no sound
¢ Plug the TV in.
¢ Press O on the TV.
¢ Press) @ or the programme number
© on the remote commander if ©
indicator is on.
« Check the aerial connection.
¢ Check that the video source is on.
e Turn the TV off for 3 or 4 seconds and
then turn it on again using off.
Poor or no picture (screen is dark, sound is good)
¢ Press MENU @ and adjust brightness
picture and colour levels.
Good picture, no sound
* Adjust the volume <4 +/- OW.
¢ Disconnect any headphones.
¢ Press %K@ if & is displayed on the
screen.
No colour on colour programmes
© Press MENU @ and adjust colour
balance.
¢ Press MENU (N} and reset to factory
" — settings.
Distorted picture when you change programmes
or select teletext
¢ Turn off the equipment connected to the
21-pin connector Kd
Remote commander does not function
¢ Replace the batteries.
¢ If you continue to have these problems, have your TV serviced by qualified
personnel.
© NEVER open the casing yourself.
Additional Information 7 18
Specifications
TV system
I
Colour system
PAL
Channel coverage
KV-M2170L/M2171L
UHF 21-69
VHE A-J
Hyper S1-S41
KV-M2170U/M2171U
UHF 21-69
Picture tube
HiBlack Trinitron
Approx 54.5 cm (21 inches) (Approx 51 cm
picture measured diagonally)
Inputs
21-pin connector (CENELEC standard)
including audio/video input, RGB input
Outputs
Headphone jack - minijack
Sound output:
4W (RMS)
5W (music power)
Power consumption
75W
Dimensions (wxhxd)
513x475x475mm approx.
Weight
21kg
Accessories supplied
RM-836 Remote Commander (1)
IEC designated batteries (2)
Other features
TELETEXT (for KV-M2171U/M2171L)
* Design and specifications are subject to change without notice.
Additional Information

: KV-M217
2-1. REAR COVER REMOVAL
SECTION 2
DISASSEMBLY
] @) Four screws
we
Bs
(BVTP4x16)
ON A
@ Rear cover @&
2-2. SERVICE POSITION
A board
444-5
naps ununenonmaunnmaeaaitoante

KV-M217
2-3. PICTURE TUBE REMOVAL
JH @® Degaussing coil
© DGC holder JA
N <.
8) C board
@® Deflection yoke
@) Anode cap
Four PT screws (S)
@) Picture tube
Cushion
¢ REMOVAL OF ANODE-CAP
Note: Short circuit the anode of the picture tube and the anode cap to the metal chassis,
CRT shield or carbon paint on the CRT, after removing the anode.
* REMOVING PROCEDURES.
Q) Turn up one side of the rubber cap in Q) Using a thumb pull up the rubber cap G) When one side of the rubber cap 4s
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 itup in
*
HOW
TO
HANDLE
AN
ANODE-CAP
the
direction
of
the
arrow
©)
@
Don't
damage
the
surface
of
anode-cap
with
sharp
shaped material
!
®
Don't
press
the
rubber
hardly
not to
hurt inside
of
anode-caps
!
A
metal
fitting
called
as
shatter-hook
terminal
is
built
into
__
the
rubber.
@
Don’t
turn the
foot
of rubber
over hardly
!
The shatter-hook
terminal
will
stick
out
or damage
the rubber.
a | fo

KV-M217
The Contrast and Brightness controls should be set as follows
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 the rated
power supply voltage, unless otherwise noted.
unless otherwise noted:
(@ CONTRAST control.......... 80%
x¢ BRIGHTNESS control....... 50%
Perform the adjustments in the following order:
1. Beam Landing
2. Convergence
3. Screen (G2), Drive, White Balance, Sub Colour and
Sub Brightness.
4. Focus
Note: Test Equipment Required.
1. Colour bar/Pattern Generator
Preparation:
In order to reduce the influence of external magnetic
forces on the picture tube, face the TV set in an easterly
or westerly direction.
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 an all white raster signal from the pattern generator.
CONTRAST
BRIGHTNESS
Switch the raster signal of the pattern generator to Red.
Move the deflection yoke backward, and adjust with the
purity control so that Red is at the centre and the Blue and
Green are evenly spaced at the sides. see (Fig. 3-1 - 3-3)
Move the deflection yoke forward, and adjust so that the
entire screen becomes Red. (Fig. 3-1)
Switch the raster signal to Blue and then Green to confirm
the condition.
When the position of the deflection yoke has been
determined, tighten it with the deflection yoke mounting
screw.
When the landing at the comers is not correct, adjust by
using disk magnets. (Fig. 3-4)
normal
2. Degausser
3. DC Power Supply
4. Digital multimeter
5. Oscilloscope
Fig. 3-2
Purity control
J
Fig. 3-3
Fig. 3-4
Disk magnets or
rotatable disk
magnets correct
these areas (a-d).
—16—
I

3-2. CONVERGENCE
Preparation:
* Before starting, perform FOCUS, H.SIZE, and V.SIZE
adjustments.
* Set the BRIGHTNESS control to minimum.
¢ Input a dot pattern from the pattern generator.
(1) Horizontal and Vertical Static Convergence
Centre dot
H.STAT Control V.STAT Magnet
RV701 SCREEN
1. Adjust the H.STAT control to converge the Red, Green and
Blue dots at the centre of the screen. (Horizontal movement)
2. Adjust the V.STAT magnet to converge the Red, Green and
Blue dots at the centre of the screen. (Vertical movement)
° Ifthe horizontal dots cannot coincide with variable range of
the H.ST AT convergence, adjust together with the V.'STAT
convergence while tracking.
(Adjust the convergence by tilting the V.STAT convergence
or by opening or closing the V.STAT convergence.)
ae cae =
RS 19AR FO
WTS
KV-M217
3. When the V.STAT magnet is moved in the direction of
the (a) and (b) arrows, the Red, Green and Blue
dots move as shown below.
(1). @ (a) (&)
OF O B86 B
MIs «ft © a) 4
RO ’ R
(3)
If the Red and Blue dots do not converge with the Green
dots, perform the following steps.
1. Move the BMC magnet (a) to correct for insufficient
H. static convergence.
2. Rotate the BMC magnet (b) to correct for insufficient
V static convergence.
In either case, repeat the Beam Landing Adjustment.
BMC magnet
(b)
7

KV-M217
(2) Dynamic Convergence Adjustment
Preparation:
e
static convergence adjustment.
Slightly loosen the deflection yoke screw.
Remove the deflection yoke spacers.
NOK
(3) Screen-corner Convergence.
Before starting to perform the Horizontal and Vertical
—18—
3. Move the deflection yoke for best convergence as shown
below.
4. Tighten the deflection yoke screw.
5.
Install the deflection yoke spacers.
a Affix a Permalloy ass’y
corresponding to the
misconverged areas
Permalloy assembly
rr

3-3. SCREEN(G2), DRIVE, WHITE BALANCE,
SUB COLOUR and SUB BRIGHTNESS.
C board
RV701 SCREEN
Screen (G2) setting
1.
Oye Pa BS
Input a O IRE (Black Level) signal from the pattern
generator.
Enter into the Service Mode "Test""Test" and 38.
Adjust RV701 until the Down arrow is displayed.
Adjust RV701 until the Down arrow just disappears.
Press the TV Button on the Remote Commander to store
the data.
1.
N
Os Ri
Input a Video signal containing a small area of 100%
white on a black background.
Connect an oscilloscope to Pin of J701 (R OUT)
on the C Board.
Set the Picture to maximum using "Test""Test" and 01.
Enter into the Service mode (Adjust Menu).
Using the Blue and Green buttons select "RED HWB".
Using the Red and Yellow buttons on the Remote
Commander adjust until the oscilloscope waveform has
an amplitude of 85V.
85V
White Balance Adjustment
1.
we
Input an al] white pattern from the pattern generator.
Adjust the Colour and Brightness controls to the standard
level.
Enter into the Service Mode.
Adjust the Green HWB and Blue HWB so that the
White Balance becomes optimum.
—19—
KV-M217
Sub Colour Adjustment
Ne
eres
Input a PAL colour bar pattern from the pattern generator.
Connect an oscilloscope to Pin of J701 (B OUT)
on the C Board.
Enter into the Service Mode "Test""Test" and 22.
Using the Red and Yellow buttons on the Remote
Commander adjust until the oscilloscope waveform
becomes as follows :
a
oot
ee
SAME
LEVEL
B. OUT
Note : If the TV is able to receive PAL and SECAM
transmissions, repeat the above procedure using a Secam
colour bar signal.
Sub Brightness Adjustment
1.
Input a Philips pattern from the pattern generator.
2. Enter into the Service Mode "Test""Test" and 23.
3. Using the Red and Yellow buttons on the Remote
Commander adjust until the 0 IRE of the grey scale and the
cut off are only slightly visible on the screen.
3-4. FOCUS
1. Receive a television broadcasting.
2. Normalize the picture setting.
3. Adjust the focus control on the flyback transformer to
become the focus in the centre area properly.
Bring only the centre area of the screen into focus, the
magenta-ring appears on the screen. In this case, adjust the
focus to optimize the screen uniformly.
Focus

; KV-M217
SECTION 4
CIRCUIT ADJUSTMENTS
4-1. ELECTRICAL ADJUSTMENTS
Service adjustment to this model can be performed Range of adjustments available from the on screen menu
with the supplied Remote Control Commander RM-836. system.
HOW TO ENTER INTO SERVICE MODE
1. Turn on the main power of the set and enter into
stand-by mode.
2. Press the following sequence of buttons on the Remote
Control Commander.
Adjustment
ON/OFF
BG-L, BG-DK
UK, Eire, BG
System Select
Text Select EAST/WEST
<1 AGC Adj. 00 - 63
[j=l s =| + |= (OO ig 00-0
Sen Anar {DIGIT 5) (VOLUME +) (Ty) B&W Delay Adj. 00 i 63
“Ver Brea [00 [00-63
[00-68
v.Postion [42 | 00-63
Adj. 00 - 63
"TT-- " will appear in the top right corner of the screen
Other status information will also be displayed.
3. Press the MENU button on the Remote Commander to
obtain the menu on the screen.
Adjust.
16:9 ON
System
Text
AGC
PLL
Vi .00-01 SONY BE-4A
Software version
4. Press the Blue (Next) or Green (previous) buttons to
select the adjustment item from the table.
5. Press the Yellow (+) or Red (-) buttons to change the data
as required.
6. Turn off the power to quit the service mode when
adjustments are completed.
— 20 —