LG RT-21FB200PX User manual

COLOR TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : MC-019B
MODEL : RT-21FB200PX
MODEL :
RT-21FB220PX
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

- 2 -
CONTENTS
Contents ................................................................................................................. 2
Safety Precautions ............................................................................................3
Servicing Precautions ..................................................................................... 4
Specifications ..................................................................................................... 6
Description of Controls .................................................................................. 7
Disasse bly Instructions .............................................................................10
Adjust ent ............................................................................................................11
Purity & Convergence Adjust ent ..........................................................14
Block Diagra ......................................................................................................17
Trouble Shooting ................................................................................................18
Exploded View .................................................................................................. 22
Exploded View Parts List .............................................................................23
Replace ent Parts List ............................................................................... 24
SVC. Sheet ................................................................................................................

- 3 -
SAFETY PRECAUTIONS
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in
the Schematic Diagram and Replacement Parts List.
It is essential that these special safety parts should be replaced ith the same components as recommended in this manual to
prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design ithout permission of manufacturer.
General Guidance
An lsolation Transfor er should always be used during
the servicing of a receiver hose chassis is not isolated from
the AC po er line. Use a transformer of adequate po er rating
as this protects the technician from accidents resulting in
personal injury from electrical shocks.
It ill also protect the receiver and it's components from being
damaged by accidental shorts of the circuitary that may be
inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this TV receiver is blo n,
replace it ith the specified.
When replacing a high attage resistor (Oxide Metal Film
Resistor, over 1W), keep the resistor 10mm a ay from PCB.
Keep ires a ay from high voltage or high temperature parts.
Due to high vacuum and large surface area of picture tube,
extreme care should be used in handling the Picture Tube.
Do not lift the Picture tube by it's Neck.
X-RAY Radiation
Warning:
To determine the presence of high voltage, use an accurate
high impedance HV meter.
Adjust brightness, color, contrast controls to minimum.
Measure the high voltage.
The meter reading should indicate
23.5 ±1.5KV: 14-19 inch, 26 ±1.5KV: 19-21 inch,
29.0 ±1.5KV: 25-29 inch, 30.0 ±1.5KV: 32 inch
If the meter indication is out of tolerance, immediate service
and correction is required to prevent the possibility of
premature component failure.
Before returning the receiver to the custo er,
al ays perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc.,
to be sure the set is safe to operate ithout damage of
electrical shock.
Leakage Current Cold Check(Antenna Cold Check)
With the instrument AC plug removed from AC source,
connect an electrical jumper across the t o AC plug prongs.
Place the AC s itch in the on positioin, connect one lead of
ohm-meter to the AC plug prongs tied together and touch other
ohm-meter lead in turn to each exposed metallic parts such as
antenna terminals, phone jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be bet een 1MΩ and 5.2MΩ.
When the exposed metal has no return path to the chassis the
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
Leakage Current Hot Check (See belo Figure)
Plug the AC cord directly into the AC outlet.
Do not use a line Isolation Transfor er during this check.
Connect 1.5K/10 att resistor in parallel ith a 0.15uF capacitor
bet een a kno n good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC
voltmeter ith 1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC
voltage measurements for each esposed metallic part. Any
voltage measured must not exceed 0.75 volt RMS hich is
corresponds to 0.5mA.
In case any measurement is out of the limits sepcified, there is
possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
Leakage Current Hot Check circuit
The source of X-RAY RADIATION in this TV receiver is the
High Voltage Section and the Picture Tube.
For continued X-RAY RADIATION protection, the
replacement tube must be the same type tube as specified in
the Replacement Parts List.
1.5 Kohm/10W
To Instrument's
exposed
METALLIC PARTS
Good Earth Ground
such as WATER PIPE,
CONDUIT etc.
AC Volt-meter
IMPORTANT SAFETY NOTICE
0.15uF

- 4 -
CAUTION: Before servicing receivers covered by this service
manual and its supplements and addenda, read and follo the
SAFETY PRECAUTIONS on page 3 of this publication.
NOTE: If unforeseen circumstances create conflict bet een the
follo ing servicing precautions and any of the safety
precautions on page 3 of this publication, al ays follo the
safety precautions. Remember: Safety First.
General Servicing Precautions
1. Al ays unplug the receiver AC po er cord from the AC
po er source before;
a. Removing or reinstalling any component, circuit board
module or any other receiver assembly.
b. Disconnecting or reconnecting any receiver electrical plug
or other electrical connection.
c.
Connecting a test substitute in parallel ith an electrolytic
capacitor in the receiver.
CAUTION: A rong part substitution or incorrect
polarity installation of electrolytic capacitors may result
in an explosion hazard.
d. Discharging the picture tube anode.
2. Test high voltage only by measuring it ith an appropriate
high voltage meter or other voltage measuring device (DVM,
FETVOM, etc) equipped ith a suitable high voltage probe.
Do not test high voltage by "dra ing an arc".
3. Discharge the picture tube anode only by (a) first connecting
one end of an insulated clip lead to the degaussing or kine
aquadag grounding system shield at the point here the
picture tube socket ground lead is connected, and then (b)
touch the other end of the insulated clip lead to the picture
tube anode button, using an insulating handle to avoid
personal contact ith high voltage.
4. Do not spray chemicals on or near this receiver or any of its
assemblies.
5. Unless specified other ise in this service manual, clean
electrical contacts only by applying the follo ing mixture to
the contacts ith a pipe cleaner, cotton-tipped stick or
comparable nonabrasive applicator; 10% (by volume)
Acetone and 90% (by volume) isopropyl alcohol (90%-99%
strength)
CAUTION: This is a flammable mixture.
Unless specified other ise in this service manual, lubrication
of contacts in not required.
6. Do not defeat any plug/socket B+ voltage interlocks ith
hich receivers covered by this service manual might be
equipped.
7. Do not apply AC po er to this instrument and/or any of its
electrical assemblies unless all solid-state device heat sinks
are correctly installed.
8. Al ays connect the test receiver ground lead to the
receiver chassis ground before connecting the test receiver
positive lead.
Al ays remove the test receiver ground lead last.
9. Use with this receiver only the test fixtures specified in this
service manual.
CAUTION: Do not connect the test fixture ground strap to
any heatsink in this receiver.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged
easily by static electricity. Such components commonly are
called Electrostatically Sensitive (ES) Devices. Examples of
typical ES devices are integrated circuits and some fieldeffect
transistors and semicounductor "chip" components. The
follo ing techniques should be used to help reduce the
incidence of component damage caused by static by static
electricity.
1. Immediately before handling any semiconductor component
or semiconductor-equipped assembly, drain off any
electostatic charge on your body by touching a kno n earth
ground. Alternatively, obtain and ear a commercially
available discharging rist strap device, hich should be
removed to prevent potential shock reasons prior to
applying po er to the unit under test.
2. After removing an electrical assembly equipped ith ES
devices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge buildup or
exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder
ES devices.
4. Use only an anti-static type solder removal device. Some
solder removal devices not classified as "anti-static" can
generate electrical charges sufficent to demage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufficient to damage ES devices.
6. Do not remove a repalcement ES device from its protective
package until immediately before you are ready to install it.
(Most replacement ES devices are packaged ith leads
electrically shorted together by conductive foam, aluminum
foil or comparable conductive material).
7. Immediately before removing the protective material from
the ieads of a replacement ES device, touch the protective
material to the chassis or circuit assembly into hich the
device ill be installed.
CAUTION:Be sure no po er is applied to the chassis or
circuit, and observe all other safety precautions.
8. Minimize bodily motions hen handling unpackaged
replacement ES devices. (Other ise harmless motion such
as the bruching together of your clothes fabric or the lifting
of your foot from a carpeted floor can generate static
electricity sufficient to damage an ES device.)
General Soldering Guidelines
1. Use a grounded-tip, lo - attage soldering iron and
appropriate tip size and shape that ill maintan tip
temperature ithin the range or 500°F to 600°F.
2. Use an appropriate gauge of RMA resin-core solder
composed of 60 parts tin/40 parts lead.
3. Keep the soldering iron tip clean and ell tinned.
4. Thorohly clean the surfaces to be soldered. Use a mall
irebristle (0.5 inch, or 1.25cm) brush ith a metal handle.
Do not use freon-propelled spray-on cleaners.
5. Use the follo ing unsoldering technique
a. Allo the soldering iron tip to reach normal temperature.
(500°F to 600°F)
b. Heat the component lead until the solder melts.
c. Quickly dra the melted solder ith an anti-static,
suction-type solder removal device or ith solder braid.
CAUTION: Work quickly to avoid overheating the
circuiboard printed foil.
6. Use the follo ing soldering technique.
a. Allo the soldering iron tip to reach a normal
temperature (500°F to 600°F)
b. First, hold the soldering iron tip and solder the strand
against the component lead until the solder melts.
SERVICING PRECAUTIONS

- 5 -
c. Qulckly move the soldering iron tip to the junction of the
component lead and the printed circuit foil, and hold it
there only until the solder flo s onto and around both the
component lead and the foil.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
d. Closely inspect the solder area and remove any excess
or splashed solder ith a small ire-bristle brush.
IC Re ove/Replace ent
Some chassis circuit boards have slotted holes (oblong) through
hich the IC leads are inserted and then bent flat against the
circuit foil. When holes are the slotted type, the follo ing
technique should be used to remove and replace the IC. When
orking ith boards using the familiar round hole, use the
standard technique as outlined in parapraphs 5 and 6 above.
Removal
1. Desolder and straighten each IC lead in one operation by
gently prying up on the lead ith the soldering iron tip as the
solder melts.
2. Dra a ay the melted solder ith an anti-static suction-
type solder removal device (or ith solder braid) before
removing the IC.
Replacement
1. Carefully insert the replacement IC in the circuit boare.
2. Carefully bend each IC lead against the circuit foil pad and
solder it.
3. Clean the soldered areas ith a small ire-bristle brush.
(It is not necessary to reapply acrylic coating to the areas).
"S all-Signal" Discrete Transistor
Re oval/Replace ent
1. Remove the defective transistor by clipping its leads as
close as possible to the component body.
2. Bend into a "U" shape the end of each of three leads
remaining on the circuit board.
3. Bend into a "U" shape the replacement transistor leads.
4. Connect the replacement transistor leads to the
corresponding leads extending from the circuit board and
crimp the "U" ith long nose pliers to insure metal to metal
contact then solder each connection.
Power Output, Transistor Device
Re oval/Replace ent
1. Heat and remove all solder from around the transistor leads.
2. Remove the heatsink mounting scre (if so equipped).
3. Carefully remove the transistor from the heat sink of the
circuit board.
4. Insert ne transistor in the circuit board.
5. Solder each transistor lead, and clip off excess lead.
6. Replace heatsink.
Diode Re oval/Replace ent
1. Remove defective diode by clipping its leads as close as
possible to diode body.
2. Bend the t o remaining leads perpendicula y to the circuit
board.
3. Observing diode polarity, rap each lead of the ne diode
around the corresponding lead on the circuit board.
4. Securely crimp each connection and solder it.
5. Inspect (on the circuit board copper side) the solder joints of
the t o "original" leads. If they are not shiny, reheat them
and if necessary, apply additional solder.
Fuse and Conventional Resistor
Re oval/Replace ent
1. Clip each fuse or resistor lead at top of the circuit board
hollo stake.
2. Securely crimp the leads of replacement component around
notch at stake top.
3. Solder the connections.
CAUTION: Maintain original spacing bet een the replaced
component and adjacent components and the circuit board
to prevent excessive component temperatures.
Circuit Board Foil Repair
Excessive heat applied to the copper foil of any printed circuit
board ill eaken the adhesive that bonds the foil to the circuit
board causing the foil to separate from or "lift-off" the board.
The follo ing guidelines and procedures should be follo ed
henever this condition is encountered.
At IC Connections
To repair a defective copper pattern at IC connections use the
follo ing procedure to install a jumper ire on the copper
pattern side of the circuit board. (Use this technique only on IC
connections).
1. Carefully remove the damaged copper pattern ith a sharp
knife. (Remove only as much copper as absolutely
necessary).
2. carefully scratch a ay the solder resist and acrylic coating
(if used) from the end of the remaining copper pattern.
3. Bend a small "U" in one end of a small gauge jumper ire and
carefully crimp it around the IC pin. Solder the IC connection.
4. Route the jumper ire along the path of the out-a ay
copper pattern and let it overlap the previously scraped end
of the good copper pattern. Solder the overlapped area and
clip off any excess jumper ire.
At Other Connections
Use the follo ing technique to repair the defective copper
pattern at connections other than IC Pins. This technique
involoves the installation of a jumper ire on the component
side of the circuit board.
1. Remove the defective copper pattern ith a sharp knife.
Remove at least 1/4 inch of copper, to ensure that a
hazardous condition ill not exist if the jumper ire opens.
2. Trace along the copper pattern from both sides of the
pattern break and locate the nearest component that is
directly connected to the affected copper pattern.
3. Connect insulated 20-gauge jumper ire from the lead of
the nearest component on one side of the pattern break to
the lead of the nearest component on the other side.
Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper ire is dressed so
the it does not touch components or sharp edges.

- 6 -
SPECIFICATIONS
Note : Specification and others are subject to change ithout notice for improvement.
OVideo input syste :
PAL-B/G, D/K, I/I
SECAM-B/G, D/K
NTSC M
NTSC 4.43
OInter ediate Frequency (Unit : MHz)
VISION IF : 38.9MHz
COLOR IF : 34.47MHz(4.43)
35.32MHz(3.58) : NTSC-M
VIF-4.25000MHz
VIF-4.40625MHz
SOUND IF : 33.4MHz (B/G)
32.9MHz (I/I)
32.4MHz (D/K)
34.4MHz (M)
OPower require ent : 110~240V, 50/60Hz
OPower consu ption : 95
OTuning syste :
FVS
100 Programme memory
200 Programme memory(W/O TXT)
O Antenna input i pedance : VHF/UHF 75 ohm, unbalanced
OOSD (On Screen Display) : EASY-MENU
OVoice coil i pedance : 8 ohm
OSound output : 7W×2(MAX)
Dual/Stereo : A2/NICAM(Option)
OExternal connection : Head Phone Jack
A/V in : 2
PERI Connector(Full Scart) : 1
DVD in
OExternal In/Output
Audio-In:0.5Vrms!3dB,over 10Kohm
Audio-Out:0.5Vrms!3dBb,below 1Kohm
Video-In/Out:1Vp-p!3dB,75ohm
DVD In Y: 1Vp-p!3dB
Pb,Pr : 0.7Vp-p!3dB
OFeature : Auto programme/Manual programme
CSM (Color Status Memory)
Auto Sleep
Turbo Picture & Sound
Programme Editing
PSM (Picture Status Memory)
Teletext (TOP/FLOF/LIST)
ACMS
Auto Volume Level
Game
SSM(Sound Status Memory)
Favorite Program
PIP
OTuning range
Band
VHF-Lo
VHF-High
Hyper
UHF
S1'-S3', S1
S2-S10,
S11-S20
S21-S41
For TV For CATV
B/G
Ch2-4
Ch5-12
D/K
Ch1-5
Ch6-12
I/I
Ch4-13
NTSC
Ch2-13
Ch21-69 Ch14-69
(): SECAM

- 7 -
All the functions can be controlled with the remote control handset.
Some functions can also be adjusted with the buttons on the front
panel of the set.
Remote control handset
Before you use the remote control handset, please install the bat-
teries. See the next page.
1. POWER
switches the set on from standby or off to standby.
2. NUMBER BUTTONS
switches the set on from standby or directly select a number.
3. NO FUNCTION
4. SURROUND (ºº/*) (option)
selects surround sound.
5. TURBO PICTURE / SOUND BUTTON (option)
selects Turbo picture and sound.
6. DD()
/ EE( ) (Programme Up/Down)
selects a programme or a menu item.
switches the set on from standby.
scans programmes automatically.
FF / GG (Volume Up/Down)
adjusts the volume.
adjusts menu settings.
7. VCR BUTTONS
control a LG video cassette recorder.
8. SSM (Sound Status Memory)
recalls your preferred sound setting.
9. PSM (Picture Status Memory)
recalls your preferred picture setting.
10. EYE/*(option)
switches the eye function on or off.
11. TELETEXT BUTTONS (option)
These buttons are used for teletext.
For further details, see the ‘Teletext’ section.
12. SWAP
returns to the previously viewed programme.
selects a favorite programme.
EE
EE
DD
DD
OK
PR
VOL
PR
VOL
PLAY
P/STILL STOP REC
REW FF
SSM
LIST
PSM
?
MIX TIME
SWAP INPUT
REVEAL SLEEP
SIZE STILL POSITION
9/4PIP
i
M
0TV/AV
MENU
PICTURE
SOUND
123
456
789
POWER MUTE
EYE/
PR
PR
TURBO/
PIP/TEXT/
I/II/
/
()
()
1
2
3
4
6
7
9
10
11
8
5
12
DECRIPTIONS OF CONTROLS

- 8 -
13. MUTE
switches the sound on or off.
14. TV/AV
selects TV or AV mode.
clears the menu from the screen.
switches the set on from standby.
15. MENU
selects a menu.
selects an index page in the teletext mode (only TELETEXT
models).
16. OK
accepts your selection or displays the current mode.
17. LIST
displays the programme table.
18. I/II/*(option)
selects the language during dual language broadcast. (option)
selects the sound output.
19. SLEEP
sets the sleep timer.
20. PIP BUTTONS (option)
PIP
switches the sub picture on or off.
PR +/
-
selects a programme for the sub picture.
SWAP
alternates between main and sub picture.
INPUT
selects the input mode for the sub picture.
SIZE
adjusts the sub picture size.
STILL
freezes motion of the sub picture.
POSITION
relocates the sub picture in clockwise direction.
9/4 PIP
switches on or off the 9 or 4 sub pictures.
COLOURED BUTTONS : These buttons are used for teletext (only
TELETEXT models) or programme edit.
Battery installation
The remote control handset is powered by two AA type batteries. To
load the batteries, turn the remote control handset over and open
the battery compartment. Install two batteries as indicated by the
polarity symbols ( and ) marked inside the compartment.
Note : To avoid damage from possible battery leakage, remove the
batteries if you do not plan to use the remote control handset for an
extended period of time.
+
-
OK
PR
VOL
PR
VOL
PLAY
P/STILL STOP REC
REW FF
SSM
LIST
PSM
?
MIX TIME
SWAP INPUT
REVEAL SLEEP
SIZE STILL POSITION
9/4PIP
i
M
0TV/AV
MENU
PICTURE
SOUND
123
456
789
POWER MUTE
EYE/
PR
PR
TURBO/
PIP/TEXT/
I/II/
/
()
()
13
14
15
16
17
18
19
20

- 9 -
1. MAIN POWER (ON/OFF)
switches the set on or off.
2. POWER/STANDBY INDICATOR
illuminates brightly when the set is in
standby mode.
dims when the set is switched on.
blinks when signal is input from the
remote control.
3. REMOTE CONTROL SENSOR
4. MENU
selects a menu.
5. OK
accepts your selection or displays the
current mode.
FF / GG (Volume Up/Down)
adjusts the volume.
adjusts menu settings.
DD / EE(Programme Up/Down)
selects a programme or a menu item.
switches the set on from standby.
6. TV/AV
selects TV or AV mode.
clears the menu from the screen.
switches the set on from standby.
7. (Function)
selects volume, EYE (option), picture items
or brief auto programme while the menus
not display.
8. +/- (DD/EE)
adjusts the function or selects a pro-
gramme.
switches the set on from standby.
9. AUDIO/VIDEO IN SOCKETS (AV)
(option)
Connect the audio/video out sockets of
external equipment to these sockets.
Note :If both the input jacks on the
front/side panel and back panel have
been connected to external equipments
simultaneously, only the input jacks on
the front/side panel can be received.
10. HEADPHONE SOCKET (option)
Connect the headphone plug to this
socket.
11. EYE (option)
adjusts picture according to the sur-
rounding conditions.
12. TURBO SOUND / PICTURE (option)
switches Turbo sound or Turbo picture
function on or off.
Note : Do not place any heavy objects (over
4Kg) on the RF/RT-21FA34 series models.
ON/OFF
MENU OK VOL PR
1 3 4 5 9 10
ON/OFF
MENU VOL
OK PR
RF/RT-21FA34 series
CF/CT-21Q60N/61N/62N series
CF/CT-21Q20N/21N/22N series CF/CT-21Q64N/65N/66N series
CF/CT-15Q90N/91N/92N series
VIDEO TV/AV
VOL PR
AUDIO
AV
LR
ON/OFF
TV/AV (VOL)PR VIDEO AUDIO
AV
LR
( ) ( )
ON/OFF
ON/OFF
TV/AV
VOL PR
1
2
10 9 6 7 8 23
12367 8 11
1 2 3 6 7 9 10 11
2 3 4 5
111
11
ON/OFF
MENU VOL SOUND
OK PR PICTURE
TURBO
DIGITAL TURBO SOUND
DIGITAL TURBO SOUND
CF/CT-21Q90N/91N/92N series
1 2 34115
8
VIDEO RL AUDIO
AV
10
9
VIDEO LRAUDIO
AV
10
9
PR
VOLOKMENU
RF/RT-21FA7 series
ON/OFF
VIDEO AUDIO
AV
R
L
10
9
13 2
45
12
ON/OFF MENU OK
VOL PR VIDEO AUDIO
AV
RF/RT-21FB3 series
1 2 3 4 1095
ON/OFF
MENU
OK
VOL
PR
RF/RT-21FB2 series
1 2 34115
VIDEO LRAUDIO
AV
10
9

- 10 -
Fig. 2-1 Fig. 2-2
CPT
board
Remove
Screws
Main
PCB
PIP
PCB
DISASSEMBLY INSTRUCTIONS
I portant note
This set is disconnected from the po er supply through the
converter transformer. An isolating transformer is necessary
for service operations on the primary side of the converter
transformer.
Back Cabinet Re oval
Remove the scre s residing on the back cabinet and carefully
separate the back cabinet from the front cabinet. (Fig. 2-1).
Chassis Assy Re oval
Grasp both side of Frame and pull it back ard smoothly.
CPT Re oval
1. Pull out the CPT board from the CPT neck.
2. Place the front cabinet on soft material not to mar the front
surface or damage control knobs.
3. Remove 5 scre s securing the picture tube mounting
brackets to the front cabinet.
4. Carefully separate CPT from the front cabinet.
PICTURE TUBE HANDLING CAUTION
Due to high vacuum and large surface area of picture tube, great
care must be exercised hen handling picture tube. Al ays lift
picture tube by grasping it firmly around faceplate.
NEVER LIFT TUBE BY ITS NECK! The picture tube must not be
scratched or subjected to excessive pressure as fracture of
glass may result in an implosion of considerable violence hich
can cause personal injury or property damage.

- 11 -
O Safety Precautions
1. It is safe to adjust after using insulating transformer
between the power supply line and chassis input to
prevent the risk of electric shock and protect the
instrument.
2. Never disconnect leads while the TV receiver is on.
3. Don't short any portion of circuits while power is on.
4. The adjustment must be done by the correct appliances.
But this is changeable in view of productivity.
5. Unless otherwise noted, set the line voltage to
110~240Vac !10%, 50/60Hz.
6. The adjustment of TV should be performed afther warming
up for 20 minutes.
O Test Equipment required
1. Multimeter (volt meter)
2. Oscilloscope
3. 10:1 PROBE
4. Color Analyzer
O CDL Data Adjustment(LINE SVC-0)
1) Press the SVC button to get into the SVC-0 Mode.
2) Press the Channel UP/DOWN button to select CDL12.
3) Press the Volume UP/DOWN button until the CDL data is
the same as the Table below.
4) Press the OK(V) button to memorize the data.
O OPTION Data Adjustment(OPTION-1,OPTION-2)
1) Press OK buttons on both TV set and Remote Controller at
the same time to get into SVC mode.
2) Press the Yellow button several times to find OPTION-1 or
OPTION-2.
3) Input the correspond OPTION data referring to Table below
with the numeric buttons.
4) Press the OK(V) button to memorize the data.
Table 1. OPTION 1 Function
Table 2. OPTION 2 Function
Table 3. OPTION 3 Function
ADJUSTMENT
21” FCD
12
FLAT
14,16” CPT
8
15” CPT
10
FLAT
20,21” CPT
12
CDL Data
Remark
0
1
0
1
0
1
0
1
0
1
SCART
TOP
2 IN 1
DVD
C MUTE
Option Code Function Remark
ACTIVE
NOT ACTIVE
W/O DVD
DVD(REAR JACK)
W/O 2 IN 1TUNER
WITH 2 IN 1TUNER
FLOF TXT
TOP TXT
PHONO JACK
SCART JACK
0
1
0
1
0
1
0
1
EYE
TBS
MONO
4 KEY
Option Code Function Remark
W/O TBS
WITH TBS
W/O EYE
WITH EYE
W/O 4 KEY
WITH 4 KEY
FORCED MONO
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
ACMS
T-SCH
T-P/S
CURVE
DUAL
CHA
+ AU
200 PRO
GAME
BCF
Option Code Function Remark
Auto Abnormal ON
Not Used
W/O GAME PACK
WITH GAME PACK
100 PRO
200 PRO
Except China,Austrailia
China,Austrailia
W/O DUAL
WITH DUAL
Austrailia
Except Austrailia
W/O TURBO SEARCH
WITH TURBO SEARCH
W/O TURBO P/S
WITH TURBO P/S
NORMAL VOLUME CURVE
M-A,India VOLUME CURVE
0
1
0
1
2
3
0
1
2
3
SYSTEM
HOTEL
2ND IF
Option Code Function Remark
W/OHOTEL
W/HOTEL
OFF
Bilingual
2ND BG
2ND DK
BG/L
BG/I/DK
BG/I/DK/M
BG/I/DK 2

- 12 -
O AGC Adjustment (SERVICE 1)
1) Connect RF signal (70dB!0.2dB) and turn on the TV.
※Standard adjustment Channel
- EU 05 Ch. (frf = 175.25MHz)
2) Press the OK buttons on TV set and Remote Controller at the
same time to get into SVC-0 mode.
3) Press the Channel UP/DOWN button on the Remote
Controller several times to find AGC??.
4) Press the Volume UP/DOWN button until the AGC Voltage is
the same as the Table below.
5) Press the OK(V) button to memorize the data.
O FOCUS Adjustment
1) Tune the TV set to receive a PAL 05CH.
2) Adjust the Focus Volume of FBT for best focus.
O Screen Voltage Adjustment
1) Connect the probe of oscilloscope to the RK (Red Cathode)
of CPT Board.
2) Set the oscilloscope to 50V/div and 20Us/div and after
putting GND line upon the lowest grid line of the scope by
pressing GND button,enter into DC mode.
3) Tune the TV set to receive a PAL-B/G 05CH.
4) Adjust Screen Volume of FBT so that the waveform is the
same as below figure (DC 140!3V).
O White Balance Adjustment.(LINE SVC-0)
NOTE : This adjustment should be performed after screen voltage
adjustment.
1) Tune the TV set to receive an 100% white pattern.
2) Press OK(V) buttons on TV set and remote controller at the
same time to get into SVC mode.
3) Press Yellow button on remote controller. (Standard mode)
4) Press Channel UP/DOWN button for desirous function
adjustment.
5)
Adjust VOL+ or VOL-button in each status of "RG--"/"BG--" for
X=272
!8 , Y=288 !8 with color analyzer.(Europe Model :
X=288 !8
, Y=295
! X=272 !8
, 11,000K)
7) Press the OK(V) button to memorize the data.
Test Point : AGC TP (C101)
Adjust : Remote Controller
Tuner P/N
Marker
AGC Voltage
6700VPF009G
LG Innotek(W/S TUNER)
2.7!0.05V
6700VPF016A
DAEWOO(W/S TUNER)
2.7!0.05V
Tuner P/N
Marker
AGC Voltage
6700VPF009S
LG Innotek(TBS TUNER)
2.5!0.05V
Test Point : Observing Display
Adjust : Focus Volume of FBT
Test Point : RK (Red Cathode of CPT Board)
Adjust : Screen Volume of FBT
Horizontal
FlyBack Time Black level
White level
GND for dc
140Vp-p
Status
RG
GG
BG
BLO-R
BLO-G
Initial Data
31
31
31
31
31
Remark
0
1
2
3
0
1
2
3
0
1
0
1
2
0
1
2
3
0
0
1
0
1
OSD-L
(E-ASIA)
OSD-L
(CH+HI)
English
English,Deutsch,Francais,Italiano,Espanol
English,Nederlands,Svenska,Dansk,Suomi,Por
tugues,Romaneste,Polski,Cesky,Pyccknn
English,Romaneste,Polski,Cesky,Pyccknn,Magyar
English
English,Arab,,Urdu,French
English,Parsi,Urdu,French
English,French,Arab,Urdu,Parsi
English
English,Malay,Vietnam,Indonesian,Thai
English
English,Chinese
English,Hindi
TXT-L
(EU)
TXT-L
(E-ASIA)
TXT-L
(ARAB)
TXT-L
(FARSI)
OSD-L
(EU)
OSD-L
(M-
ASIA)
Option Code Function Remark
ENG. ONLY
EU-7EA
EU ALL
EU EAST
ENG. ONLY
ARABIC
PARSI
ARAB,FARSI,URDE
ENG.ONLY
ASIA-ALL
ENG.ONLY
E+CHINA
E+HINDI
W-EU
E-EU
CYRILLIC
UKRAINIAN
WEST-EU
WEST-EU
ARABIC
WEST-EU
FARSI 14”
DC 130V !3V
OTHERS
DC 140V !3V

- 13 -
O Deflection Data Adjustment (Line SVC-1)
NOTE: To enter SVC mode, press "OK" buttons on both TV set
and the Remote control at the same time.
1. Preparation for Deflection Adjustment
1) At SVC mode, press the Yellow colored button.
And then, deflection data adjustment OSD (SVC1 mode) will
be displayed.
2) Tune the TV set to receive a PAL 05 CH and set the ARC
mode is standard.
2. Deflection Initial Setup Data
3. Deflection Adjustment Procedure
VL (Vertical Linearity)
Adjust so that the boundary line bet een upper and lo er half
is in accord ith geometric horizontal center of the CPT.
VA (Vertical A plitude)
Adjust so that the circle of a digital circle pattern may be
located ithin the effective screen of the CPT.
SC (Vertical “S” Correction)
Adjust so that all distance bet een each horizontal lines are
to be the same.
VS (Vertical Shift)
Adjust so that the horizontal center line of a digital circle
pattern is in accord ith geometric horizontal center of the
CPT.
HS (Horizontal Shift)
Adjust so that the vertical center line of a digital circle pattern is
in accord ith geometric vertical center of the CPT.
Press the OK(V) button to memorize the data.
VL
VA
VS
HS
SC
31
31
31
31
25
31
31
31
31
25
31
31
31
31
25
Status Default 21" FLAT S/S 21" FLAT LG

- 14 -
PURITY & CONVERGENCE ADJUSTMENT
Caution:
Convergence and Purity have been factory aligned. Do not
attempt to tamper with these alignments.
However, the effects of adjacent receiver components, or
replacement of picture tube or deflection yoke may require the
need to readjust purity any convergence.
●Purity Adjustment
This procedure DOES NOT apply to bonded yoke and picture
tube assemblies.
The instrument should be at room temperature (60 degrees F or
above) for six (6) hours and be operating at low beam current
(dark background) for approximately 20 to 30 minutes before
performing purity adjustments.
CAUTION: Do not remove any trim magnets that may be
attached to the bell of the picture tube.
1. Remove the AC power and disconnect the internal
degaussing coil.
2. Remove the yoke from the neck of the picture tube.
3. If the yoke has the tape version beam bender, remove it and
replace it with a adjustable type beam bender (follow the
instructions provided with the new beam bender)
4. Replace the yoke on the picture tube neck, temporarily
remove the three (3) rubber wedges from the bell of the
picture tube and then slide the yoke completely forward.
5. Reconnect the internal degaussing coil.
6. Position the beam bender locking rings at the 9 o'clock
position and the other three pairs of tabs (2,4 and 6 pole
magnets) at the 12 o'clock position.
7. Perform the following steps, in the order given, to prepare the
receiver for the purity adjustment procedure.
a. Face the receiver in the "magnetic north" direction.
b. Externally degauss the receiver screen with the television
power turned off.
c. Turn the television on for approximately 10 seconds to
perform internal degaussing and then turn the TV off.
d. Unplug the internal degaussing coil. This allows the
thermistor to cool down while you are performing the purity
adjustment. DO NOT MOVE THE RECEIVER FROM ITS
"MAGNETIC NORTH" POSITION.
e. Turn the receiver on and obtain a red raster by increasing
the red bias control (CW) and decreasing the bias controls
for the remaining two colors (CCW).
f. Attach two round magnets on the picture tube screen at 3
o'clock and 9 o'clock positions, approximately one (1) inch
from the edge of the mask (use double-sided tape).
DEFLECTION YOKE
PURITY &CONVERGENCE
MAGNET ASSEMBLY
RUBBER
WEDGES
GLASS CLOTH TAPE
;;;;
;;;;
;;;;;
;;;;
;;;;
;;
;;
;;;
;;;
;;
;;;;;
;;;;;
;;;;;
;;;;;;
;;;;;
;;;;;
;;;;;
;;;;;
;;
PURITY MAGNET
6-POLE
4-POLE
4-POLE
MAGNET
CONVERGENCE MAGNET ASSEMBLY
6-POLE
MAGNES PURITY MAGNET(2-POLE)
X-AXIS YOKE
POSITIONING
(L/R PURITY)
6-POLE
MAGNETS
CONVERGENCE MAGNET ASSEMBLY

- 15 -
8. Referring to above, perform the following two steps:
a. Adjust the yoke Z-axis to obtain equal blue circles.
b. Adjust the appropriate beam bender tabs to obtain correct
purity (four equal circles).
9. After correct purity is set, tighten the yoke clamp screw and
remove the two screen magnets.
10. Remove the AC power and rotate the receiver 180 degrees
(facing "magnetic south").
11. Reconnect the internal degaussing coil.
12. Turn the receiver on for 10 seconds (make sure the receiver
came on) to perform internal degaussing, and then turn the
receiver off.
13. Unplug the internal degaussing coil.
14. Turn on the receiver and check the purity by holding one (1)
round magnet at the 3 o'clock and a second round magnet at
9 o'clock position. If purity is not satisfactory, repeat steps 8
through 14.
15. Turn off the receiver and reconnect the internal degaussing
coil.
●Convergence Adjustment
Caution: This procedure DOES NOT apply to bonded yoke and
picture tube assemblies.
Do not use screen magnets during this adjustment
procedure. Use of screen magnets will cause an
incorrect display.
1. Remove AC power and disconnect the internal degaussing
coil.
2. Apply AC Power and set the brightness to the Picture Reset
condition. Set the Color control to minimum.
3. Make a horizontal line.
4. Adjust the Red, Green and Blue Bias controls to get a dim
white line.
5. Restore the screen by removing the horizontal line.
6. Reconnect the internal degaussing coil and apply AC power.
7. Turn the receiver on for 10 seconds to perform internal
degaussing and then turn the receiver off again.
8. Unplug the internal degaussing-coil.
9. Turn on the receiver, connect a signal generator to the VHF
antenna terminal and apply a crosshatch signal.
Caution: During the convergence adjustment procedure, be
very careful not to disturb the purity adjustment tabs
are accidentally move, purity should be confirmed
before proceeding with the convergence adjustments.
Note: Make sure the focus is set correctly on this instrument
before proceeding with the following adjustment.
10. Converge the red and blue vertical lines to the green vertical
line at the center of the screen by performing the following
steps (below TABLE).
a. Carefully rotate both tabs of the 4-pole ring magnet
simultaneously in opposite directions from the 12 o'clock
position to converge the red and blue vertical lines.
b. Carefully rotate both tabs of the 6-pole ring magnet
simultaneously in opposite directions form the 12 o'clock
position to converge the red and blue (now purple)
vertical lines with the green vertical line.
11. Converge the red and blue horizontal with the green line at
the center of the screen by performing the following steps.
(below TABLE)
a. Carefully rotate both tabs of the 4-pole ring magnet
simultaneously in the same direction (keep the spacing
between the two tabs the same) to converge the red and
blue horizontal lines.
b. Carefully rotate both tabs of the 6-pole ring magnet
simultaneously in same direction (keep the spacing
between the two tabs the same) to converge the red and
blue (now purple) horizontal lines with the green
horizontal line.
c. Secure the tabs previsouly adjusted by locking them in
place with the locking tabs on the beam bender.
MAGNETS
RED RED
1.ADJUST YOKE Z-AXIS FIRST
TO GET EQUAL BLUE
COLOR CIRCLES
2 .ADJUST BEAM BENDER 2 POLE
MAGNET TO GET FOUR EQUAL
COLOR CIRCLES

- 16 -
RING
PAIRS
4
POLE
ROTATION DIRECTION
OF BOTH TABS
OPPOSITE
SAME
OPPOSITE
SAME
MOVEMENT OF RED
AND BLUE BEAMS
BB
RR
OR
OR
BR BR
OR
B
R
B
R
BROR BR
6
POLE
12. While watching the 6 o'clock positions on the screen, rock the
front of the yoke in a vertical (up/down) direction to converge
the red and blue vertical lines. (Fig upper left)
13. Temporarily place a rubber wedge at the 12 o'clock position
to hold the vertical position or the yoke.
14.
Check the 3 o'clock and 9 o'clock areas to confirm that the red
and blue horizontal lines are converged.
If the lines are not converged, slightly offset the vertical tilt of the
yoke (move the rubber wedge if necessary) to equally balance the
convergence error of the horizontal lines at 3 o'clock and 9 o'clock
and the vertical lines at 6 o'clock and 12 o'clock.
15. Place a 1.5 inch piece of glass tape over the rubber foot at
the rear of the 12 o'clock wedge.
16. While watching the 6 o'clock and 12 o'clock areas of the
screen, rock the front of the yoke in the horizontal (left to
right) motion to converge the red and blue horizontal lines.
(Fig. upper right)
17. Temporarily place a rubber wedge at the 5 o'clock and 7
o'clock positions to hold the horizontal position of the yoke.
18. Check the 3 o'clock and 9 o'clock areas to confirm that the
red and blue vertical lines are converged. If the lines are not
converged, slightly offset the horizontal tilt of the yoke (move
the temporary rubber wedges if necessary) to equally
balance the convergence error of the horizontal lines at 6
o'clock and 12 o'clock and the vertical lines at 3 o'clock and 9
o'clock.
19. Using a round magnet confirm purity at the center, right and
left sides and corners. See Purity Adjustment Procedure.
20. Reconfirm convergence and apply a 1.5 inch piece of glass
tape over the rubber foot at the rear of the 5 o'clock and the 7
o'clock wedges.
RED
BLUE
RED BLUE
BLUE
RED
GREEN
GREEN
BLUE RED
GREEN
GREEN
ADJUSTMENT
VIEWING
AREA
UP/DOWN ROCKING OF THE YOKE
CAUSES OPPOSITE ROTATION OF RED
AND BLUE RASTERS
ADJUSTMENT
VIEWING
AREA
RED
RED
GREEN
TV
SCREEN
LEET/RIGHT ROCKING OF THE YOKE
CAUSES OPPOSITE SIZE CHANGE OF
THE RED AND BLUE RASTERS
UP/DOWN ROCKING OF THE YOKE
CAUSES OPPOSITE ROTATION OF RED
AND BLUE RASTERS
LEFT/RIGHT ROCKING OF THE YOKE
CAUSES OPPOSITE SIZE CHANGE OF THE
RED AND BLUE RASTERS

- 17 -
BLOCK DIAGRAM
DVD
(FLAT OPT.)
R.G.B AMP. & CPT DRIVE (TDA6107Q)
FBT
185V -14V
AFC ABL
HEATER
B+
HDT
Collector
A1(R/L)-IN
SPK(R/L)-OUT
UOC
TDA9361(TXT)
H/P AV-IN
AUDIO B+
B+ (110/115V)
(14/17V)
SMPS TRANS
SPK.
Front-AV(2)
(MNT/TV-OUT)
14V
H-out
IFout
Int.
CVBS
SCL
SDA
EXT
Video-in
RGB
OUT
IK
H-Vcc
VIDEO
TUNER
V_DY
VERTICAL AMP
LA7840
Va
Rear_AV(1)
(SCART / PHONE)
IC03
EEPROM
24C08/16
A(R/L)-OUT
Vb
Va
Vb
SPK.
9.5V
5V
From
IC131
A1/A2(R/L)-IN
Y/Pb/Pr
DVD(R/L)-IN / Game Audio
MNT/TV-A(R/L)-OUT
SIF
FM-SIF-IN
SW1 SW2 SDA SCL
MSP3410D
TDA9859
AV STEREO
MONO TDA2006
SOUND AMP
AC INPUT (110~240V)
Sound Max
SOUND AMP.
TDA7266/97
STEREO,
IC131 5V REG
Option Part IIC Bus Line
TDA9381(Non-TXT)
Audio(Mono)
(TV OUT)
28 33 21
22
38
Sound Trap Part
Video-OUT(TV/MNT OUT)
50 4251~53
STEREO ( ~B01K ~ A13P)
MONO ( ~B01L )
10
12
9
5 3 9 8
10
2
6
14V
1
SPK(L)-OUT
24 25
4744
AUDIO
30
39
31 40
28
30
14 39
8V From IC844
14 39 39
3.3V Reg.
5V
From
IC842 3.3V
8V
From
IC844
IC844 8V REG IC842 5V REG
41 42
1
32
IC02
IC631
IC661
5V 5V
5.1V
SFE 5.5/6.0M
32
SIF
SIF
From Tuner
35
EXT
Audio-in
IC651
LA7016(Mono Opt)
7
2
TV Audio(From UOC #28) / Game Audio (From HIC01)
4
MNT Audio Out(Mono) TV Audio Out (CL Mono)
IC591
LA7016(DVD / GameOpt)
2
DVD Y / Game Video
4 7
EXT Video
PJ201
EXT Video(To UOC #42)
HIC01
Game Pack(Game Opt)
3, 4, 5 1 2
From UOC Video(Game) Audio(Game)
PJ202
15 18
44 Audio Out
TO IC631 #1,#5
IC592 LA7016
(TV /AV)
2
4
7
PIP BOARD
EXT.RGB
AV RF
RF STEREO

- 18 -
TROUBLE SHOOTING
NO RASTER
CHECK +B
at D807 cathode
Is the voltage at pin14
& 39 of IC01 8V?
Check
FUSE of AC line
Check the voltage
of C806
Check the voltage
pin3 of IC803
Check pin33
of IC01(H-out)
Check Q402
collector waveform
Check T402
& each pin voltage
Check &replace
T402
Check &replace
IC01
Check &replace
Q402
Check &replace
T402
Check the in/out
of IC844
Check IC01
pin1 high?
Check /replace
IC801,IC803,IC804
Check /replace
Fuse,DB801
Check /replace
DB801
Normal Abnormal
Yes
Yes
Yes
Yes
No
No
No
No
No No
No
No
No
OK
254~380V
Open
0V
Is the voltage at pin61,56
& 54 of IC01 3.3V?
Yes
Is the voltage at pin3
of IC02 5V?
Check the In/Out
of IC842
Check the voltage
at D805 or D815
cathode
Check / Replace
F812
Check / Replace
IC01,IC02
Yes
NO RASTER / SOUND OK
Check the
Heater voltage of CPT
(6 ~ 6.5Vrms)
Check
FR404,FR902,P302
Check
FBT T401
Check the
Heater pulse of FBT
T401
Check
Ik Current of
IC01,pin50
Not OK
OK Not OK
Check/Replace
CPT Board
Components
Check
IC01,ZD901
IC901,P902,P541
OK Not OK
OK
Check
HV, Screen voltage of
CPT
Check
FBT T401
Not OK

- 19 -
NO SOUND / PICTURE OK
Select correct system
in menu
Check the waveform
at pin 35 of IC501
Check the waveform
at pin 4 of IC651
Check the waveform
at pin 44 of IC01
Check the waveform
at pin 4 of IC601
Check the voltage
at pin 5 of IC601
Check the waveform
at pin 1 of IC601 Check/Replace Q621
Check/Replace
FR803,D804
Check/Replace IC601
OK
OK
OK
Check the waveform
at pin 2,7 of IC651
OK
NO
NO Check / Replace
IC651
Check/Replace
IC01
Check the waveform
at pin28 IC01
NO
NO
MONO
Select correct system
in menu
Check / Replace
TU101
Check the voltage
at pin 16,33,46 of IC661
NO
OK
Check the waveform
at pin 16 of TU101
Check the waveform
at pin 4,12 of IC602
Check the voltage
at pin 6,7 of IC602
Check the waveform
at pin 1,2,14,15 of IC602
Check the voltage
at pin 3,13 of IC602
Check the waveform
at pin 24,25 of IC661
Check/Replace
F811,D824
Check/Replace
Q621,IC603
Check/Replace
Q671,Q672
OK
OK
OK
OK
OK
NO
NO
Check the voltage
at pin1 of IC131
RF STEREO
NO
NO
NO
NO
NO
NO
NO
NO
OK
Check/Replace
IC131,IC661

- 20 -
Select correct system
in menu
Check / Replace
IC01
Check the voltage
at pin 6 of IC631
NO
OK
Check the waveform
at pin 44 of IC01
Check the waveform
at pin 4,12 of IC602
Check the voltage
at pin 6,7 of IC602
Check the waveform
at pin 1,2,14,15 of IC602
Check the voltage
at pin 3,13 of IC602
Check the waveform
at pin 15,18 of IC631
Check/Replace
F811,D824
Check/Replace
Q621,IC603
Check/Replace
IC602
OK
OK
OK
OK
OK
NO
NO
AV STEREO
NO
NO
Check / Replace
IC301,T401.
Check the PIP Board.
NO
Check the waveform
at pin 1,2 of P501.
Is the voltage at pin 45
of IC01 3V?
Check the waveform
at pin 6,10 of P501.
Check the waveform
at pin 46,47,48 of IC01.
Check/Replace
IC01.
Check the video
signal line.
OK
OK
OK
OK
NO
NO
NO PIP
NO